CN110822093B - Silicone rubber sealing element - Google Patents
Silicone rubber sealing element Download PDFInfo
- Publication number
- CN110822093B CN110822093B CN201911246860.2A CN201911246860A CN110822093B CN 110822093 B CN110822093 B CN 110822093B CN 201911246860 A CN201911246860 A CN 201911246860A CN 110822093 B CN110822093 B CN 110822093B
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- CN
- China
- Prior art keywords
- sealing
- framework
- elastic
- lip
- elastic sheet
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- 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.)
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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
Abstract
The invention discloses a silicon rubber sealing piece, 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 coaxially arranged, the sealing body forms a plurality of sealing lips on the inner side of the framework, the sealing body forms an outer sealing part on the outer side of the framework, a coaxial annular elastic sheet is arranged inside the sealing lips, and one end of the elastic sheet, which is far away from the sealing lips, is 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, and 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 towards the center of the shaft-shaped component and compress and attach the sealing lip to the shaft-shaped component, so that the sealing performance of the sealing element is improved.
Description
Technical Field
The invention belongs to the technical field of sealing, and particularly relates to a silicon rubber sealing element.
Background
The rubber gasket has the performances of oil resistance, acid and alkali resistance, cold resistance, heat resistance, aging resistance and the like, can be directly cut into sealing gaskets with various shapes, and is widely applied to industries of medicines, electronics, chemical industry, antistatic, flame retardance, food and the like.
The application scene of the rubber gasket basically comprises static sealing and dynamic sealing, wherein the dynamic sealing is often accompanied with abrasion between a workpiece and the rubber gasket to cause the rubber gasket to wear, and finally the rubber gasket loses sealing performance. Patent application CN201821457915.5 describes a wear-resistant self-restoring sealing rubber gasket, which has a volume that holds the rubber gasket by the elastic action of a spring, prevents the sealing performance of the rubber gasket from decreasing, and realizes the self-restoring function of the rubber gasket. However, dynamic sealing occurs mostly on the inner and outer circumferential surfaces of the rubber gasket, and thus abrasion is more serious, and the rubber gasket described in this application can only realize a self-recovery function on both end surfaces of the rubber gasket.
Disclosure of Invention
The present invention addresses the problems of the prior art described above by providing a silicone rubber seal.
The invention solves the technical problems by the following technical means:
the utility model provides a silicone rubber sealing member, includes skeleton and cladding at the outside sealing body of skeleton, sealing body and skeleton are the annular solid of revolution structure of coaxial setting, the sealing body forms multichannel seal lip in the skeleton inboard, the sealing body forms outer seal portion in the skeleton outside, the inside of seal lip is provided with coaxial annular elastic disc, the one end that the seal lip was kept away from to the elastic disc is fixed on the skeleton.
Further, the elastic piece comprises an integrated fixing part and an elastic part, 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.
Further, a notch is formed in the elastic portion of the elastic piece, and the notch extends to the edge of the fixing portion.
Furthermore, the notches are annularly and uniformly distributed on the circumference of the elastic sheet, and the shape and the size of the sheet-shaped clamping part formed between the adjacent notches are completely the same as those of the notches.
Further, the elastic part is provided with a deformation joint, the deformation joint extends from the junction of the fixed part and the elastic part to the edge of the elastic part, and the deformation joint is distributed on the circumference of the elastic piece in a surrounding way.
Furthermore, slots are formed in the upper end face and the lower end face of the framework plane, and the fixing parts of the elastic pieces are inserted into the slots.
Further, a first lip, a second lip and a third lip are sequentially arranged on the inner side of the sealing body from top to bottom.
Further, a spring is further arranged outside the third lip.
The beneficial effects of the invention are as follows: 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, and 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 towards the center of the shaft-shaped component and compress and attach the sealing lip to the shaft-shaped component, so that the sealing performance 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 skeleton and elastic sheet of the present invention before assembly;
fig. 3 is a schematic perspective view of the assembled skeleton and elastic sheet.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
As shown in fig. 1 to 3, a silicone rubber sealing member comprises a framework 10 and a sealing body 20 coated outside the framework 10, wherein the sealing body 20 and the framework 10 are of an annular revolving body structure coaxially arranged, the sealing body 20 forms a plurality of sealing lips on the inner side of the framework 10, the sealing body 20 forms an outer sealing part on the outer side of the framework 10, the outer sealing part is usually in sealing fit with a mounting hole, the sealing lips are in sealing fit with a rotating shaft-shaped part, the framework 10 is used for supporting the annular structure of the sealing body 20, and the sealing body 20 is prevented from compressing, deforming and collapsing inwards to affect the sealing effect; inside the sealing lip is provided a coaxial annular elastic piece 30, the end of the elastic piece 30 remote from the sealing lip being fixed to the frame 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 by injection molding, the sealing body 20 is formed on the outer side of the framework 10, meanwhile, the sealing lip on the inner side of the sealing body 20 is provided with a framework structure, and as 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 part during installation, when the sealing surface of the sealing lip is worn, the elastic sheet 30 can rebound towards the center of the shaft-shaped part and compress and adhere the sealing lip to the shaft-shaped part, so that the sealing property of the sealing element is improved. In order to secure the rebound efficiency of the elastic sheet 30, the elastic modulus of the elastic sheet 30 is greater than that of the seal lip.
As shown in fig. 2, the elastic sheet 30 includes an integral 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.
Since the elastic sheet 30 is deformed by extrusion, the elastic portion 32 thereof deforms in a direction approaching to the frame 10, and the above-mentioned connection structure is characterized in that the frame 10 has a supporting and limiting function in the middle, on the one hand, the transition bending deformation of the elastic portion 32 is limited, and on the other hand, when the elastic portion 32 is bent and deformed, the elastic portion 32 is reacted by the frame 10, so that when the sealing lip is worn, the elastic portion 32 is more favorable for rebound deformation.
Since the elastic sheet 30 in the top seal lip and the bottom seal lip has a cross structure in part, all the completely closed ring structures cannot realize the cross structure, and thus structural improvement of the elastic sheet 30 is required. In order to solve this problem, as shown in fig. 2, a notch 33 is formed in the elastic portion 32 of the elastic sheet 30, and the notch 33 extends to the edge of the fixing portion 31, so that the elastic sheet 30 in the top sealing lip and the bottom sealing lip can be crossed by the notch 33 to achieve the edge portion, so that the elastic sheet can be fixed on the upper and lower end surfaces of the plane of the frame 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 the adjacent notches 33 are identical to those of the notches 33. Therefore, the upper elastic sheet 30 and the lower elastic sheet 30 can be perfectly clamped and crossed through the notch 33, the notch 33 can be formed by using the same set of stamping die, the cost is saved, and the forming efficiency is improved.
Since the elastic sheet 30 needs to be deformed to achieve the corresponding function, when the elastic sheet 30 is deformed, the elastic sheet 30 is turned outwards, as shown in fig. 2, the elastic portion 32 is provided with the deformation joint 34, the deformation joint 34 extends from the junction of the fixing 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. When the elastic sheet 30 is deformed, the deformation joint 34 is expanded, and the eversion deformation of the elastic sheet 30 is not affected.
As shown in fig. 1 to 3, the upper and lower end surfaces of the plane of the skeleton 10 are provided with slots 11, and the fixing portions 31 of the elastic pieces 30 are inserted into the slots 11, thereby fixing the elastic pieces 30.
As shown in fig. 1, the inner side of the sealing body 20 is provided with a first lip 21, a second lip 22 and a third lip 23 from top to bottom. The three lips play a three-layer sealing role, and the first lip 21 and the third lip 23 are internally provided with the elastic sheets 30, and the tightness of the sealing element can be ensured to the greatest extent because the structures of the two elastic sheets 30 are completely independent and cannot influence each other.
As shown in fig. 1, a spring 40 is further disposed outside the third lip 23, so as to tighten the third lip 23, thereby further improving the tightness.
The seal 20 in the present invention is silicone rubber.
It is noted that 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. Moreover, the terms "upper," "lower," and the like, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. The silicon rubber sealing piece comprises a framework (10) and a sealing body (20) coated outside the framework (10), wherein the sealing body (20) and the framework (10) are of an annular revolving body structure coaxially arranged, a plurality of sealing lips are formed on the inner side of the framework (10) by the sealing body (20), and an outer sealing part is formed on the outer side of the framework (10) by the sealing body (20), and the silicon rubber sealing piece is characterized in that a coaxial annular elastic sheet (30) is arranged in the sealing lips, and one end, far away from the sealing lips, of the elastic sheet (30) is fixed on the framework (10);
the elastic piece (30) comprises an integrated fixing part (31) and an elastic part (32), the elastic part (32) is arranged in the sealing lip, the fixing part (31) of the elastic piece (30) in the top sealing lip is fixed at the bottom of the plane of the framework (10), and the fixing part (31) of the elastic piece (30) in the bottom sealing lip is fixed at the top of the plane of the framework (10);
a notch (33) is formed in the elastic part (32) of the elastic sheet (30), and the notch (33) extends to the edge of the fixing part (31);
the notches (33) are annularly and uniformly distributed on the circumference of the elastic sheet (30), and the shape and the size of a sheet-shaped clamping part formed between the adjacent notches (33) are completely the same as those of the notches (33);
the elastic part (32) is provided with a deformation joint (34), the deformation joint (34) extends from the joint of the fixed part (31) and the elastic part (32) to the edge of the elastic part (32), and the deformation joint (34) is circumferentially distributed on the circumference of the elastic sheet (30);
the upper end face and the lower end face of the plane of the framework (10) are respectively provided with a slot (11), and the fixing part (31) of the elastic sheet (30) is inserted into the slots (11).
2. The silicone rubber seal according to claim 1, characterized in that 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 sequence from top to bottom.
3. A silicone rubber seal according to claim 2, characterized in that the outside of the third lip (23) is further provided with a spring (40).
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 CN110822093A (en) | 2020-02-21 |
| CN110822093B true 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 |
Country Status (1)
| Country | Link |
|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
|---|---|
| CN110822093A (en) | 2020-02-21 |
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Effective date of registration: 20230511 Address after: Room 2106, Building F5, Phase II, Innovation Industrial Park, No. 800, Wangjiang West Road, High-tech Zone, Hefei City, Anhui Province, 230000 Applicant after: Anhui Jicui Information Technology Co.,Ltd. Address before: 242300 Zhongxi Town Zhongxi Village, Ningguo City, Xuancheng City, Anhui Province Applicant before: NINGGUO TIANYUN RUBBER PRODUCTS Co.,Ltd. |
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