CN112576656A - Precise rubber sealing device for automobile disc brake - Google Patents
Precise rubber sealing device for automobile disc brake Download PDFInfo
- Publication number
- CN112576656A CN112576656A CN202011597671.2A CN202011597671A CN112576656A CN 112576656 A CN112576656 A CN 112576656A CN 202011597671 A CN202011597671 A CN 202011597671A CN 112576656 A CN112576656 A CN 112576656A
- Authority
- CN
- China
- Prior art keywords
- ring body
- conical
- periphery
- sealing
- conical ring
- 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.)
- Withdrawn
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/04—Cylinders
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/06—Pistons
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/08—Seals, e.g. piston seals
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a precise rubber sealing device for an automobile disc brake, which comprises a brake fluid conduit, a lateral drainage tube, a fluid driving cylinder body, a telescopic mechanism, a connecting column and a brake block, wherein the brake fluid conduit is arranged on the lateral drainage tube; the telescopic mechanism is designed into a structure of an inner side conical ring body, a connecting block and an outer side conical ring body, firstly, the inner end surface of the inner side conical ring body and the inner side of the connecting block form a conical driving groove with a large outer end and a small inner end, so that when driving liquid is pressed against the conical driving groove, the contact area of the driving liquid is increased, and due to the structure of the conical driving groove with the large outer end and the small inner end, the pressing force of the driving liquid is mainly concentrated at the middle part of the conical driving groove, so that the pressing force around is dispersed, the problem that the sealing performance is poor due to the fact that the periphery of the inner side conical ring body is impacted is solved, and the sealing performance is improved.
Description
Technical Field
The invention relates to a precise rubber sealing device for an automobile disc brake.
Background
With the development of society, small automobiles have been popularized to household households, and as a preferred vehicle of people, the safety of automobiles is always concerned, the automobiles are inevitably subjected to emergencies in the driving process, and the driving automobiles need to be braked emergently in order to reduce the occurrence of traffic accidents.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: provides a precise rubber sealing device with good sealing performance for an automobile disc brake.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a precise rubber sealing device for an automobile disc brake comprises a brake fluid conduit, a lateral drainage tube, a fluid driving cylinder body, a telescopic mechanism, a connecting column and a brake block; two sides of the lower end of the brake fluid conduit are respectively provided with a lateral drainage tube; the lower ends of the side drainage tubes are respectively provided with a liquid driving cylinder body; a telescopic mechanism is respectively arranged in the lower end of the hydraulic driving cylinder body; the telescopic mechanism comprises an inner side conical ring body, a connecting block and an outer side conical ring body; the inner side conical ring body is of a conical ring body structure with a large inner end and a small outer end; the outer conical ring body is of a conical ring body structure with a small inner end and a large outer end; the two sides of the connecting block are respectively provided with an inner side conical ring body and an outer side conical ring body; the periphery of the inner end of the inner conical ring body and the periphery of the outer end of the outer conical ring body are respectively abutted and sealed against the periphery of the inner wall of the liquid driving cylinder body; the inner end surface of the inner side conical ring body and the inner side of the connecting block form a conical driving groove with a large outer end and a small inner end; a connecting column is arranged in the middle of the outer side of the connecting block; the outer end of the connecting column extends to the outer end of the liquid driving cylinder body; the outer ends of the connecting columns are respectively provided with brake blocks; a first sealing cavity is defined by the inner side conical ring body, the connecting block, the outer side conical ring body and the inner wall of the hydraulic driving cylinder body.
Further, an inner side abutting ring body is arranged around the inner end of the inner side conical ring body; the inner abutting ring body is made of elastic rubber materials; the inner side abutting ring body is of a circular ring structure; the interior of the hydraulic drive cylinder body is of a circular structure; the outer sides of the peripheries of the inner side abutting ring bodies are abutted and connected to the peripheries of the inner walls of the liquid driving cylinder bodies in a sealing mode.
Furthermore, the outer end periphery of the outer side conical ring body is provided with an outer side abutting ring body; the outer abutting ring body is made of elastic rubber materials; the outer side abutting ring body is of a circular ring structure; the interior of the hydraulic drive cylinder body is of a circular structure; the outer side of the periphery of the outer side abutting ring body abuts against the periphery of the inner wall of the liquid driving cylinder body in a sealing mode.
Furthermore, the connecting block is of a three-dimensional rectangular structure; the inside of connecting block is equipped with the cavity.
Further, the device also comprises an abutting sealing mechanism; the periphery of the outer end of the interior of the liquid driving cylinder body is respectively provided with an abutting sealing mechanism; the abutting sealing mechanism comprises a connecting ring body, a positioning annular cone and a conical sealing ring body; the periphery of the outer end of the connecting ring body is fixed on the periphery of the inner wall of the liquid driving cylinder body; a positioning ring-shaped cone is arranged around the inner end of the connecting ring body; a conical sealing ring body is arranged around the inner end of the positioning annular cone; the conical sealing ring body is made of high-elasticity rubber material; the periphery of the outer end of the outer conical ring body is connected with the periphery of the inner end of the conical sealing ring body in an abutting or separating way; when the outer end of the outer side conical ring body abuts against the periphery of the inner end of the conical sealing ring body, the connecting ring body, the positioning annular cone, the conical sealing ring body, the outer side conical ring body and the inner wall of the liquid driving cylinder body are surrounded to form a second sealing ring cavity.
The invention has the advantages of
1. The telescopic mechanism is designed into a structure of an inner side conical ring body, a connecting block and an outer side conical ring body, firstly, the inner end surface of the inner side conical ring body and the inner side of the connecting block form a conical driving groove with a large outer end and a small inner end, so that when driving liquid is pressed against the conical driving groove, the contact area of the driving liquid is increased, and due to the structure of the conical driving groove with the large outer end and the small inner end, the pressing force of the driving liquid is mainly concentrated at the middle part of the conical driving groove, so that the pressing force around is dispersed, the problem that the sealing performance is poor due to the fact that the periphery of the inner side conical ring body is impacted is solved, and the sealing performance is improved.
2. The inner side conical ring body, the connecting block, the outer side conical ring body and the inner wall of the liquid driving cylinder body are enclosed to form a first sealing cavity, so that the first sealing cavity is formed, when the problem of sealing performance occurs between the inner side conical ring body and the inner wall of the liquid driving cylinder body, driving liquid can be prevented from leaking out due to the existence of the first sealing cavity, in addition, due to the fact that the abutting sealing mechanism is additionally arranged, when the periphery of the outer end of the outer side conical ring body abuts against the periphery of the inner end of the conical sealing ring body, the connecting ring body, the positioning annular cone, the conical sealing ring body, the outer side conical ring body and the periphery of the inner wall of the liquid driving cylinder body are enclosed to form a second sealing ring cavity, so that a second sealing cavity is formed, therefore, the multi-way sealing structure.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a precise rubber sealing device for an automobile disc brake comprises a brake fluid conduit 1, a lateral drainage tube 2, a fluid driving cylinder 3, a telescopic mechanism 6, a connecting column 4 and a brake block 5; two sides of the lower end of the brake fluid conduit 1 are respectively provided with a lateral drainage tube 2; the lower ends of the side drainage tubes 2 are respectively provided with a hydraulic driving cylinder body 3; a telescopic mechanism 6 is respectively arranged in the lower end of the hydraulic driving cylinder 3; the telescopic mechanism 6 comprises an inner side conical ring body 61, a connecting block 62 and an outer side conical ring body 63; the inner conical ring body 61 is in a conical ring body structure with a large inner end and a small outer end; the outer conical ring body 63 is of a conical ring body structure with a small inner end and a large outer end; the inner side conical ring body 61 and the outer side conical ring body 63 are respectively arranged on two sides of the connecting block 62; the periphery of the inner end of the inner conical ring body 61 and the periphery of the outer end of the outer conical ring body 63 are respectively abutted and sealed against the periphery of the inner wall of the liquid driving cylinder body 3; the inner end surface of the inner conical ring body 61 and the inner side of the connecting block 62 form a conical driving groove 612 with a large outer end and a small inner end; a connecting column 4 is arranged in the middle of the outer side of the connecting block 62; the outer end of the connecting column 4 extends to the outer end of the hydraulic driving cylinder 3; the outer ends of the connecting columns 4 are respectively provided with a brake block 5; and a first sealing cavity 612 is defined by the inner conical ring body 61, the connecting block 62, the outer conical ring body 63 and the inner wall of the hydraulic driving cylinder body 3.
As shown in fig. 1 and 2, further, an inner abutting ring body 611 is arranged around the inner end of the inner conical ring body 61; the inner abutment ring body 611 is made of an elastic rubber material; the inner abutment ring body 611 is of a circular ring structure; the interior of the hydraulic drive cylinder body is of a circular structure; the outer sides of the peripheries of the inner abutting ring body 611 are in sealing abutting contact with the peripheries of the inner wall of the hydraulic drive cylinder body 3. Further, an outer abutting ring body 631 is arranged around the outer end of the outer conical ring body 63; the outer abutment ring 631 is made of an elastic rubber material; the outer abutment ring 631 is of a circular ring structure; the interior of the hydraulic cylinder 3 is of a circular structure; the outer side of the outer side abutting ring body 631 abuts against the periphery of the inner wall of the liquid driving cylinder 3 in a sealing manner. Further, the connecting block 62 is of a three-dimensional rectangular structure; the connecting block 62 is provided with a cavity 621 inside. Further, an abutting sealing mechanism 7 is also included; the periphery of the outer end of the interior of the hydraulic drive cylinder body 3 is respectively provided with an abutting sealing mechanism 7; the abutting sealing mechanism 7 comprises a connecting ring body 73, a positioning annular cone 72 and a conical sealing ring body 71; the periphery of the outer end of the connecting ring body 73 is fixed on the periphery of the inner wall of the liquid driving cylinder body 3; a positioning ring-shaped cone 72 is arranged around the inner end of the connecting ring body 73; a conical sealing ring body 71 is arranged around the inner end of the positioning annular cone 72; the conical sealing ring body 71 is made of a high-elasticity rubber material; the periphery of the outer end of the outer conical ring body 63 is connected with the periphery of the inner end of the conical sealing ring body 71 in an abutting or separating way; when the periphery of the outer end of the outer conical ring body 63 abuts against the periphery of the inner end of the conical sealing ring body 71, a second sealing ring cavity 74 is formed by the periphery of the inner wall of the connecting ring body 73, the positioning annular cone 72, the conical sealing ring body 71, the outer conical ring body 63 and the liquid driving cylinder body 3.
According to the invention, the telescopic mechanism 6 is designed to be in the structure of the inner side conical ring body 61, the connecting block 62 and the outer side conical ring body 63, firstly, the inner end surface of the inner side conical ring body 61 and the inner side of the connecting block 62 form the conical driving groove 612 with a large outer end and a small inner end, so that the contact area of the driving liquid is increased when the driving liquid is pressed against the conical driving groove 612, and due to the structure of the conical driving groove 612 with a large outer end and a small inner end, the pressing force of the driving liquid is mainly concentrated at the middle part of the conical driving groove 612, so that the pressing force around is dispersed, the problem that the periphery of the inner side conical ring body 61 is impacted to cause poor sealing performance is avoided, and the sealing performance is improved.
In addition, because the abutting sealing mechanism 7 is additionally arranged, when the periphery of the outer end of the outer conical ring body 63 abuts against the periphery of the inner end of the conical sealing ring body 71, the connecting ring body 73, the positioning annular cone 72, the conical sealing ring body 71, the outer conical ring body 63 and the periphery of the inner wall of the liquid driving cylinder body 3 form a second sealing ring cavity 74, and thus a second sealing cavity is formed, so that a plurality of sealing structures are formed, and the sealing structure is good.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A precise rubber sealing device for an automobile disc brake is characterized by comprising a brake fluid conduit, a lateral drainage tube, a fluid driving cylinder body, a telescopic mechanism, a connecting column and a brake block; two sides of the lower end of the brake fluid conduit are respectively provided with a lateral drainage tube; the lower ends of the side drainage tubes are respectively provided with a liquid driving cylinder body; a telescopic mechanism is respectively arranged in the lower end of the hydraulic driving cylinder body; the telescopic mechanism comprises an inner side conical ring body, a connecting block and an outer side conical ring body; the inner side conical ring body is of a conical ring body structure with a large inner end and a small outer end; the outer conical ring body is of a conical ring body structure with a small inner end and a large outer end; the two sides of the connecting block are respectively provided with an inner side conical ring body and an outer side conical ring body; the periphery of the inner end of the inner conical ring body and the periphery of the outer end of the outer conical ring body are respectively abutted and sealed against the periphery of the inner wall of the liquid driving cylinder body; the inner end surface of the inner side conical ring body and the inner side of the connecting block form a conical driving groove with a large outer end and a small inner end; a connecting column is arranged in the middle of the outer side of the connecting block; the outer end of the connecting column extends to the outer end of the liquid driving cylinder body; the outer ends of the connecting columns are respectively provided with brake blocks; a first sealing ring cavity is defined by the inner side conical ring body, the connecting block, the outer side conical ring body and the inner wall of the hydraulic driving cylinder body.
2. The precise rubber sealing device for the automobile disc brake as recited in claim 1, wherein an inner abutting ring body is arranged around the inner end of the inner conical ring body; the inner abutting ring body is made of elastic rubber materials; the inner side abutting ring body is of a circular ring structure; the interior of the hydraulic drive cylinder body is of a circular structure; the outer sides of the peripheries of the inner side abutting ring bodies are abutted and connected to the peripheries of the inner walls of the liquid driving cylinder bodies in a sealing mode.
3. The precise rubber sealing device for the automobile disc brake as recited in claim 1, wherein an outer abutment ring body is provided around an outer end of the outer conical ring body; the outer abutting ring body is made of elastic rubber materials; the outer side abutting ring body is of a circular ring structure; the interior of the hydraulic drive cylinder body is of a circular structure; the outer side of the periphery of the outer side abutting ring body abuts against the periphery of the inner wall of the liquid driving cylinder body in a sealing mode.
4. The precise rubber sealing device for the automobile disc brake as claimed in claim 1, wherein the connecting block is of a three-dimensional rectangular structure; the inside of connecting block is equipped with the cavity.
5. The precision rubber sealing device for an automobile disc brake according to claim 1, further comprising an abutting sealing mechanism; the periphery of the outer end of the interior of the liquid driving cylinder body is respectively provided with an abutting sealing mechanism; the abutting sealing mechanism comprises a connecting ring body, a positioning annular cone and a conical sealing ring body; the periphery of the outer end of the connecting ring body is fixed on the periphery of the inner wall of the liquid driving cylinder body; a positioning ring-shaped cone is arranged around the inner end of the connecting ring body; a conical sealing ring body is arranged around the inner end of the positioning annular cone; the conical sealing ring body is made of high-elasticity rubber material; the periphery of the outer end of the outer conical ring body is connected with the periphery of the inner end of the conical sealing ring body in an abutting or separating way; when the outer end of the outer side conical ring body abuts against the periphery of the inner end of the conical sealing ring body, the connecting ring body, the positioning annular cone, the conical sealing ring body, the outer side conical ring body and the inner wall of the liquid driving cylinder body are surrounded to form a second sealing ring cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011597671.2A CN112576656A (en) | 2020-12-29 | 2020-12-29 | Precise rubber sealing device for automobile disc brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011597671.2A CN112576656A (en) | 2020-12-29 | 2020-12-29 | Precise rubber sealing device for automobile disc brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112576656A true CN112576656A (en) | 2021-03-30 |
Family
ID=75144097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011597671.2A Withdrawn CN112576656A (en) | 2020-12-29 | 2020-12-29 | Precise rubber sealing device for automobile disc brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112576656A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1454423A (en) * | 1974-05-04 | 1976-11-03 | Crane Packing Ltd | Rotary mechanical seals |
| DE102007034616A1 (en) * | 2006-08-23 | 2008-02-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Piston for cylinder, particularly piston for master cylinder or slave cylinder of hydraulic system, has pressure chamber, which is sealed by sealing against compensation chamber or against surrounding |
| CN102588610A (en) * | 2012-01-29 | 2012-07-18 | 天津重型装备工程研究有限公司 | Hydraulic cylinder with sealing follow-up device |
| CN102954194A (en) * | 2011-08-30 | 2013-03-06 | 常州市瑞泰工程机械有限公司 | Railway vehicle traveling gearbox sealing structure |
| CN204845915U (en) * | 2015-08-27 | 2015-12-09 | 芜湖玉泰汽车制动有限公司 | Car brake master cylinder |
| US20170002947A1 (en) * | 2015-07-02 | 2017-01-05 | S.P.M. Flow Control, Inc. | Valve for Reciprocating Pump Assembly |
| CN110307274A (en) * | 2018-07-09 | 2019-10-08 | 张荣旺 | Brake, the brake actuating system with the brake and braking method |
| CN111720547A (en) * | 2020-06-22 | 2020-09-29 | 东台市海鹏船舶配件厂 | Double-extrusion type marine sealing device |
| CN211852614U (en) * | 2020-04-11 | 2020-11-03 | 河南谐通机械制造有限公司 | Automobile brake control structure |
-
2020
- 2020-12-29 CN CN202011597671.2A patent/CN112576656A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1454423A (en) * | 1974-05-04 | 1976-11-03 | Crane Packing Ltd | Rotary mechanical seals |
| DE102007034616A1 (en) * | 2006-08-23 | 2008-02-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Piston for cylinder, particularly piston for master cylinder or slave cylinder of hydraulic system, has pressure chamber, which is sealed by sealing against compensation chamber or against surrounding |
| CN102954194A (en) * | 2011-08-30 | 2013-03-06 | 常州市瑞泰工程机械有限公司 | Railway vehicle traveling gearbox sealing structure |
| CN102588610A (en) * | 2012-01-29 | 2012-07-18 | 天津重型装备工程研究有限公司 | Hydraulic cylinder with sealing follow-up device |
| US20170002947A1 (en) * | 2015-07-02 | 2017-01-05 | S.P.M. Flow Control, Inc. | Valve for Reciprocating Pump Assembly |
| CN204845915U (en) * | 2015-08-27 | 2015-12-09 | 芜湖玉泰汽车制动有限公司 | Car brake master cylinder |
| CN110307274A (en) * | 2018-07-09 | 2019-10-08 | 张荣旺 | Brake, the brake actuating system with the brake and braking method |
| CN211852614U (en) * | 2020-04-11 | 2020-11-03 | 河南谐通机械制造有限公司 | Automobile brake control structure |
| CN111720547A (en) * | 2020-06-22 | 2020-09-29 | 东台市海鹏船舶配件厂 | Double-extrusion type marine sealing device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210330 |
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| WW01 | Invention patent application withdrawn after publication |