CN110822093A - Silicon rubber sealing element - Google Patents
Silicon rubber sealing element Download PDFInfo
- Publication number
- CN110822093A CN110822093A CN201911246860.2A CN201911246860A CN110822093A CN 110822093 A CN110822093 A CN 110822093A CN 201911246860 A CN201911246860 A CN 201911246860A CN 110822093 A CN110822093 A CN 110822093A
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- CN
- China
- Prior art keywords
- sealing
- lip
- elastic
- seal
- elastic sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention discloses a silicone rubber sealing element which comprises a framework and a sealing body coated outside the framework, wherein the sealing body and the framework are of an annular revolving body structure which is coaxially arranged, a plurality of sealing lips are formed on the inner side of the framework by the sealing body, an outer sealing part is formed on the outer side of the framework by the sealing body, coaxial annular elastic sheets are arranged inside the sealing lips, and one ends, far away from the sealing lips, of the elastic sheets are fixed on the framework. According to the invention, the elastic sheet is fixed on the inner side of the framework, so that the sealing lip on the inner side of the sealing body has a framework structure, the sealing lip and the elastic sheet can be extruded and deformed by the shaft-shaped component during installation due to the elastic deformation capability of the elastic sheet, and when the sealing surface of the sealing lip is worn, the elastic sheet can rebound to the center of the shaft-shaped component and press and attach the sealing lip to the shaft-shaped component, so that the sealing property of the sealing element is improved.
Description
Technical Field
The invention belongs to the technical field of sealing, and particularly relates to a silicone rubber sealing element.
Background
The rubber gasket has the performances of oil resistance, acid and alkali resistance, cold and heat resistance, aging resistance and the like, can be directly cut into sealing gaskets in various shapes, and is widely applied to the industries of medicine, electronics, chemical industry, antistatic property, flame retardance, food and the like.
The application scenarios of the rubber gasket basically include static sealing and dynamic sealing, wherein the dynamic sealing is often accompanied by friction between a workpiece and the rubber gasket to cause the rubber gasket to be worn out, and finally the rubber gasket loses the sealing performance. Patent application No. CN201821457915.5 describes a wear-resistant self-recovery sealing rubber gasket, which has a volume that is kept by the elastic action of a spring, thereby preventing the sealing performance of the rubber gasket from being reduced and realizing the self-recovery function of the rubber gasket. However, dynamic sealing mostly occurs on the inner and outer circumferential surfaces of the rubber gasket, and thus wear is more serious, and the rubber gasket described in this application can only achieve a self-recovery function on both end surfaces of the rubber gasket.
Disclosure of Invention
The invention provides a silicon rubber sealing element aiming at the problems in the prior art.
The invention solves the technical problems through the following technical means:
the utility model provides a silicon rubber sealing member, includes skeleton and the cladding at the outside seal of skeleton, the seal is the annular solid of revolution structure of coaxial setting with the skeleton, the seal forms multichannel seal lip in the skeleton inboard, the seal forms the external seal portion in the skeleton outside, the inside of seal lip is provided with coaxial annular flexure strip, the one end that seal lip was kept away from to the flexure strip is fixed on the skeleton.
Furthermore, the elastic piece comprises a fixing part and an elastic part which are integrated, the elastic part is arranged in the sealing lip, the fixing part of the elastic piece in the top sealing lip is fixed at the bottom of the framework plane, and the fixing part of the elastic piece in the bottom sealing lip is fixed at the top of the framework plane.
Furthermore, the elastic part of the elastic sheet is provided with a notch which extends to the edge of the fixed part.
Furthermore, the gaps are annularly and uniformly distributed on the circumference of the elastic sheet, and the shape and size of the sheet-shaped clamping part formed between the adjacent gaps are completely the same as the gaps.
Furthermore, the elastic part is provided with a deformation joint, the deformation joint extends to the edge of the elastic part from the joint of the fixing part and the elastic part, and the deformation joint is distributed on the circumference of the elastic piece in a surrounding manner.
Furthermore, slots are formed in the upper end face and the lower end face of the framework plane, and the fixing portions of the elastic pieces are inserted into the slots.
Furthermore, the inboard from the top down of seal is equipped with first lip, second lip and third lip in proper order.
Furthermore, a spring is arranged outside the third lip.
The invention has the beneficial effects that: according to the invention, the elastic sheet is fixed on the inner side of the framework, so that the sealing lip on the inner side of the sealing body has a framework structure, the sealing lip and the elastic sheet can be extruded and deformed by the shaft-shaped component during installation due to the elastic deformation capability of the elastic sheet, and when the sealing surface of the sealing lip is worn, the elastic sheet can rebound to the center of the shaft-shaped component and press and attach the sealing lip to the shaft-shaped component, so that the sealing property of the sealing element is improved.
Drawings
FIG. 1 is a schematic view of the seal of the present invention;
FIG. 2 is a schematic perspective view of the framework of the present invention prior to assembly with the flexible sheet;
fig. 3 is a schematic perspective view of the assembled framework and elastic sheet of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1 to 3, a silicone rubber sealing element includes a framework 10 and a sealing body 20 covering the framework 10, where the sealing body 20 and the framework 10 are in a coaxial annular revolving body structure, the sealing body 20 forms a plurality of sealing lips at the inner side of the framework 10, the sealing body 20 forms an outer sealing portion at the outer side of the framework 10, usually, the outer sealing portion is in sealing fit with an installation hole, the sealing lips are in sealing fit with a rotating shaft-shaped component, and the framework 10 is used for supporting the annular structure of the sealing body 20, so as to prevent the sealing body 20 from being compressed, deformed and collapsed inside to affect the sealing effect; a coaxial annular elastic sheet 30 is arranged inside the sealing lip, and one end of the elastic sheet 30 far away from the sealing lip is fixed on the framework 10.
According to the invention, the elastic sheet 30 is fixed on the inner side of the framework 10, then the sealing element is formed through injection molding and integral molding, the sealing body 20 is formed outside the framework 10, meanwhile, the sealing lip on the inner side of the sealing body 20 has a framework structure, because the elastic sheet 30 has certain elastic deformation capacity, the sealing lip and the elastic sheet 30 can be extruded and deformed by the shaft-shaped component during installation, when the sealing surface of the sealing lip is worn, the elastic sheet 30 can rebound to the center of the shaft-shaped component and press and attach the sealing lip to the shaft-shaped component, and therefore, the sealing performance of the sealing element is improved. In order to ensure the resilient efficiency of the elastic sheet 30, the elastic sheet 30 has a larger elastic modulus than the seal lip.
As shown in fig. 2, the elastic sheet 30 includes a fixing portion 31 and an elastic portion 32, the elastic portion 32 is disposed in the sealing lip, the fixing portion 31 of the elastic sheet 30 in the top sealing lip is fixed at the bottom of the plane of the frame 10, and the fixing portion 31 of the elastic sheet 30 in the bottom sealing lip is fixed at the top of the plane of the frame 10.
Because the elastic piece 30 is extruded and deformed, the elastic part 32 can deform towards the direction close to the framework 10, and the connection structure is characterized in that the framework 10 plays a role in supporting and limiting in the middle, on one hand, the elastic part 32 is limited from being bent and deformed, on the other hand, when the elastic part 32 is bent and deformed, the framework 10 can generate reaction force on the elastic part 32, and therefore when the sealing lip is worn, the elastic part 32 can rebound and deform more conveniently.
Since the cross structure exists between the top seal lip and the elastic sheet 30 in the bottom seal lip, and the cross structure cannot be realized by all completely closed ring structures, the structure improvement of the elastic sheet 30 is needed. In order to solve this problem, as shown in fig. 2, a notch 33 is formed on the elastic portion 32 of the elastic piece 30, and the notch 33 extends to the edge of the fixing portion 31, so that the elastic piece 30 in the top seal lip and the bottom seal lip can be partially crossed at the edge through the notch 33, and can be fixed on the upper end surface and the lower end surface of the plane of the framework 10 respectively.
Further, as shown in fig. 2, the notches 33 are uniformly distributed on the circumference of the elastic sheet 30 in a ring shape, and the shape and size of the sheet-shaped clamping portion formed between adjacent notches 33 are completely the same as the notches 33. Like this two upper and lower flexure strips 30 can be alternately through the perfect block of breach 33, and can use same set of stamping die to set up breach 33, practice thrift the cost, improve shaping efficiency.
Since the elastic sheet 30 needs to be deformed to perform a corresponding function, the elastic sheet 30 may be turned outwards when deformed, as shown in fig. 2, a deformation joint 34 is formed on the elastic portion 32, the deformation joint 34 extends from the junction of the fixed portion 31 and the elastic portion 32 to the edge of the elastic portion 32, and the deformation joint 34 is distributed around the circumference of the elastic sheet 30. Thus, when the elastic sheet 30 is deformed, the deformation joint 34 is expanded without affecting the outward deformation of the elastic sheet 30.
As shown in fig. 1 to 3, the upper and lower end surfaces of the plane of the frame 10 are provided with slots 11, and the fixing portion 31 of the elastic sheet 30 is inserted into the slots 11, so as to fix the elastic sheet 30.
As shown in fig. 1, a first lip 21, a second lip 22, and a third lip 23 are provided in this order from the top to the bottom inside the sealing body 20. Three lips play the sealed effect of three-layer, and all be equipped with the flexure strip 30 in first lip 21 and the third lip 23, because the structure of two flexure strips 30 is completely independent, can not influence each other, consequently can be at utmost the leakproofness of assurance sealing member.
As shown in fig. 1, a spring 40 is further disposed outside the third lip 23 for tightening the third lip 23 to further improve the sealing performance.
The sealing body 20 in the present invention is silicon rubber.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "upper", "lower", and the like are used based on the upper, lower, left, right, and the like of the referenced figures, and the terms "include", "includes", or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a silicon rubber sealing member, includes skeleton (10) and cladding seal (20) outside skeleton (10), seal (20) and skeleton (10) are the annular revolution body structure of coaxial setting, seal (20) form multichannel seal lip in skeleton (10) inboard, seal (20) form outer sealing in skeleton (10) outside, its characterized in that, the inside of seal lip is provided with coaxial annular flexure strip (30), the one end that the seal lip was kept away from in flexure strip (30) is fixed on skeleton (10).
2. The silicone rubber seal according to claim 1, wherein the elastic sheet (30) comprises a fixed portion (31) and an elastic portion (32) which are integrated, the elastic portion (32) is disposed in the seal lip, the fixed portion (31) of the elastic sheet (30) in the top seal lip is fixed at the bottom of the plane of the frame (10), and the fixed portion (31) of the elastic sheet (30) in the bottom seal lip is fixed at the top of the plane of the frame (10).
3. The silicone rubber seal as claimed in claim 2, characterized in that the elastic part (32) of the elastic strip (30) is provided with a recess (33), the recess (33) extending as far as the edge of the fastening part (31).
4. The silicone rubber seal according to claim 3, wherein the notches (33) are uniformly distributed on the circumference of the elastic sheet (30) in an annular shape, and the shape and size of the sheet-shaped clamping portion formed between adjacent notches (33) are identical to those of the notches (33).
5. The silicone rubber seal according to any one of claims 2 to 4, wherein the elastic portion (32) is provided with a deformation joint (34), the deformation joint (34) extends from the junction of the fixed portion (31) and the elastic portion (32) to the edge of the elastic portion (32), and the deformation joint (34) is circumferentially distributed on the circumference of the elastic sheet (30).
6. The silicone rubber seal according to claim 5, wherein the upper and lower end faces of the plane of the frame (10) are provided with slots (11), and the fixing portion (31) of the elastic sheet (30) is inserted into the slots (11).
7. The silicone rubber seal according to any one of claims 1 to 4 and 6, wherein the inner side of the seal body (20) is provided with a first lip (21), a second lip (22) and a third lip (23) in this order from top to bottom.
8. The silicone rubber seal as claimed in claim 7, characterized in that a spring (40) is provided on the outside of the third lip (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911246860.2A CN110822093B (en) | 2019-12-06 | 2019-12-06 | Silicone rubber sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911246860.2A CN110822093B (en) | 2019-12-06 | 2019-12-06 | Silicone rubber sealing element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110822093A true CN110822093A (en) | 2020-02-21 |
| CN110822093B CN110822093B (en) | 2023-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911246860.2A Active CN110822093B (en) | 2019-12-06 | 2019-12-06 | Silicone rubber sealing element |
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| Country | Link |
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| CN (1) | CN110822093B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB627364A (en) * | 1943-09-15 | 1949-08-08 | John Elov Englesson | Packing for adjustable blades of water turbines, ship's propellers and the like |
| CN201277328Y (en) * | 2008-09-28 | 2009-07-22 | 杜杰 | High-pressure oil seal |
| CN104074982A (en) * | 2014-06-20 | 2014-10-01 | 宁国市瑞普密封件有限公司 | Novel hub motor oil seal of electric vehicle |
| CN204344927U (en) * | 2014-10-29 | 2015-05-20 | 巴鲁德（天津）石油化工有限公司 | The outside framework oil seal of high leak tightness |
| CN105202089A (en) * | 2014-06-30 | 2015-12-30 | 上海大亚密封技术有限公司 | Integrated side pressure V-shaped spring and sealing ring with same |
| CN206159484U (en) * | 2016-11-03 | 2017-05-10 | 重庆春阳密封制品有限公司 | Through shaft exports oil blanket |
| CN206159479U (en) * | 2016-11-03 | 2017-05-10 | 重庆春阳密封制品有限公司 | Two hollow bourdon type retarber oil blankets |
| CN206159483U (en) * | 2016-11-03 | 2017-05-10 | 重庆春阳密封制品有限公司 | Jackshaft input oil blanket |
| CN206617581U (en) * | 2017-03-31 | 2017-11-07 | 常州高凯精密机械有限公司 | A kind of striker sealing structure of firing pin type glue dispensing valve |
| CN109751416A (en) * | 2017-11-02 | 2019-05-14 | 舍弗勒技术股份两合公司 | sealing device |
| CN209130186U (en) * | 2018-11-14 | 2019-07-19 | 广东顺德合昌橡塑有限公司 | A kind of silica gel sealing ring |
-
2019
- 2019-12-06 CN CN201911246860.2A patent/CN110822093B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB627364A (en) * | 1943-09-15 | 1949-08-08 | John Elov Englesson | Packing for adjustable blades of water turbines, ship's propellers and the like |
| CN201277328Y (en) * | 2008-09-28 | 2009-07-22 | 杜杰 | High-pressure oil seal |
| CN104074982A (en) * | 2014-06-20 | 2014-10-01 | 宁国市瑞普密封件有限公司 | Novel hub motor oil seal of electric vehicle |
| CN105202089A (en) * | 2014-06-30 | 2015-12-30 | 上海大亚密封技术有限公司 | Integrated side pressure V-shaped spring and sealing ring with same |
| CN204344927U (en) * | 2014-10-29 | 2015-05-20 | 巴鲁德（天津）石油化工有限公司 | The outside framework oil seal of high leak tightness |
| CN206159484U (en) * | 2016-11-03 | 2017-05-10 | 重庆春阳密封制品有限公司 | Through shaft exports oil blanket |
| CN206159479U (en) * | 2016-11-03 | 2017-05-10 | 重庆春阳密封制品有限公司 | Two hollow bourdon type retarber oil blankets |
| CN206159483U (en) * | 2016-11-03 | 2017-05-10 | 重庆春阳密封制品有限公司 | Jackshaft input oil blanket |
| CN206617581U (en) * | 2017-03-31 | 2017-11-07 | 常州高凯精密机械有限公司 | A kind of striker sealing structure of firing pin type glue dispensing valve |
| CN109751416A (en) * | 2017-11-02 | 2019-05-14 | 舍弗勒技术股份两合公司 | sealing device |
| CN209130186U (en) * | 2018-11-14 | 2019-07-19 | 广东顺德合昌橡塑有限公司 | A kind of silica gel sealing ring |
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| Publication number | Publication date |
|---|---|
| CN110822093B (en) | 2023-05-30 |
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