DE19820084A1 - Coil body for electromagnetic valve, e.g. for controlling motor vehicle internal combustion engines - Google Patents

Coil body for electromagnetic valve, e.g. for controlling motor vehicle internal combustion engines

Info

Publication number
DE19820084A1
DE19820084A1 DE1998120084 DE19820084A DE19820084A1 DE 19820084 A1 DE19820084 A1 DE 19820084A1 DE 1998120084 DE1998120084 DE 1998120084 DE 19820084 A DE19820084 A DE 19820084A DE 19820084 A1 DE19820084 A1 DE 19820084A1
Authority
DE
Germany
Prior art keywords
legs
pair
receiving chamber
coil body
connecting line
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
Application number
DE1998120084
Other languages
German (de)
Other versions
DE19820084B4 (en
Inventor
Gerhard Parthe
Eduard Lorkowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Priority to DE1998120084 priority Critical patent/DE19820084B4/en
Publication of DE19820084A1 publication Critical patent/DE19820084A1/en
Application granted granted Critical
Publication of DE19820084B4 publication Critical patent/DE19820084B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644One-way valve
    • F16K31/0651One-way valve the fluid passing through the solenoid coil
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644One-way valve
    • F16K31/0655Lift valves
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/08Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081Magnetic constructions

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electromagnets (AREA)

Abstract

The coil body has a magnetic shorting plate of two U-shaped plate parts (10,11) whose parallel arms (12-15) overlap in the installed state and are held in this position by molding on a housing, The first overlapping arm pair (12,14) with collar sections (16) on each arm enclose the wall of the first connecting line or the magnet's armature accommodation chamber. The second arm pair (13,15) is fixed in a defined position during the molding process by a sealing plug protruding through apertures (19,20) in the arms.

Description

Die Erfindung betrifft einen Spulenkörper für ein Elektromagnetventil nach dem Oberbe­ griff des Patentanspruchs 1.The invention relates to a coil former for an electromagnetic valve according to the Oberbe handle of claim 1.

Derartige Elektromagnetventile werden zum Beispiel für Steuerungen bei Kraftfahrzeug- Brennkraftmaschinen benötigt. Die DE 44 19 875 A1 zeigt ein als Massenprodukt gefertig­ tes elektromagnetisches Umschaltventil, bei dem ein Magnetrückschlußblech aus einem U- förmigen Teil gebildet wird, das durch zwei, eine Wandung einer Anschlußleitung teilweise umfassende Jochs geschlossen wird, die Ausnehmungen aufweisen, in die Zinken des U- förmigen Teils hineinragen.Solenoid valves of this type are used, for example, for controls in motor vehicle Internal combustion engines needed. DE 44 19 875 A1 shows a mass-produced product tes electromagnetic switching valve, in which a magnetic return plate from a U- shaped part is formed by two, a wall of a connecting line partially comprehensive yokes is closed, which have recesses into the tines of the U- protrude into the shaped part.

Diese Ausführung ist kompliziert, da die Zinken in die Ausnehmungen eingeführt werden müssen, sie läßt eine Vormontage nicht zu, da die ineinander geführten Teile festgehalten werden müssen, und beim nachfolgenden Umspritzen mit einem aus Kunststoff bestehen­ den Gehäuse besteht die Gefahr des Verschiebens des Magnetrückschlußbleches aus der Einbaulage, da die Teile dem hohen Einspritzdruck ausgesetzt sind.This design is complicated because the tines are inserted into the recesses must, it does not allow a pre-assembly, since the parts are held together must be, and in the subsequent injection molding with a plastic there is a risk of the magnetic backing plate shifting from the housing the installation position since the parts are exposed to the high injection pressure.

Hiervon ausgehend liegt der Erfindung daher die Aufgabe zugrunde, einen gattungsge­ mäßen Spulenkörper derart auszubilden, daß eine kostengünstige Massenproduktion bei verbessertem Funktionsverhalten des mit diesem Spulenkörper hergestellten Elektroma­ gnetventils erreicht wird.Proceeding from this, the invention is therefore based on the object, a genus moderate coil form such that an inexpensive mass production improved functional behavior of the electroma produced with this coil former solenoid valve is reached.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfol­ gend beschrieben.An embodiment of the invention is shown in the drawing and will follow described below.

Die Zeichnung zeigt:The drawing shows:

Fig. 1 einen Schnitt eines Spulenkörpers eines Elektromagnetventils; Fig. 1 shows a section of a bobbin of an electromagnetic valve;

Fig. 2 eine Ansicht des Magnetrückschlußblechs, das in der Ausführung des Elektromagnetventils nach Fig. 1 verwendet wird. Fig. 2 is a view of the magnetic return plate, which is used in the embodiment of the electromagnetic valve according to Fig. 1.

Fig. 1 zeigt einen Längsschnitt eines Spulenkörpers 1 für ein Elektromagnetventil mit einer Magnetankeraufnahmekammer 2 und einem in dieser angeordneten Ventilsitz 3 zwischen einer ersten Anschlußleitung 4 und der Aufnahmekammer 2 und mit einer zweiten, in diese Aufnahmekammer 2 einmündenden Anschlußleitung 5, mit einer gewickelten Spule 6 und mit dieser verlötetem Steckeranschluß 7 und einem aus zusammengesetzten Teilen gebildeten Magnetrückschlußblech 8 und mit einem aus umspritztem Kunststoff gebilde­ ten Gehäuse. Bei diesem Spulenkörper 1 ist das Magnetrückschlußblech 8 aus zwei U- förmigen Blechteilen 10 und 11 gebildet, deren parallele Schenkel 12, 13 und 14, 15 in Einbaulage überlappen und beim Umspritzen des Gehäuses 9 am Spulenkörper 1 dadurch in Einbaulage gehalten sind, daß das erste überlappende Schenkelpaar 12, 14 mit an je­ dem Schenkel 12, 14 angeformten Kragenabschnitten 16, 17 die Wandung 18 der ersten Anschlußleitung 4 bzw. der Magnetankeraufnahmekammer 2 umfaßt und das zweite Schenkelpaar 13, 15 durch einen durch Ausnehmungen 19, 20 der Schenkel 13, 15 ra­ genden Abdichtdorn 21 der Spritzmaschine für die Magnetankeraufnahmekammer 2 wäh­ rend des Spritzvorgangs in einer vorgegebenen Position fixiert ist. Fig. 1 shows a longitudinal section of a spool 1 for a solenoid valve with a magnet armature accommodating chamber 2 and, disposed in this valve seat 3 between a first connection line 4 and the reception chamber 2 and with a second opening into this receiving chamber 2 terminal line 5, with a wound coil 6 and with this soldered connector 7 and a magnetic return plate 8 formed from composite parts and with a housing formed from molded plastic th housing. In this coil former 1 , the magnetic return plate 8 is formed from two U-shaped sheet metal parts 10 and 11 , the parallel legs 12 , 13 and 14 , 15 of which overlap in the installed position and are held in the installed position when the housing 9 is molded onto the coil former 1 in that the first overlapping pair of legs 12, 14 integrally formed on each leg 12, 14 collar portions 16, 17, the wall 18 of the first connection line 4 and the armature receiving chamber 2 comprises and the second pair of legs 13, 15 by a through recesses 19, 20 of the legs 13, 15 ra ing sealing mandrel 21 of the injection molding machine for the armature receiving chamber 2 is fixed in a predetermined position during the injection molding process.

Es versteht sich von selbst, daß der Abdichtdorn 21 der Spritzmaschine nach dem Abküh­ len aus den Ausnehmungen 19, 20 der Schenkel 13, 15 herausgezogen wird. Die Aus­ nehmungen 13, 15 dienen danach zur Aufnahme eines nicht dargestellten Spulenkerns, der teilweise in die Magnetankeraufnahmekammer 2 hineinragen soll.It goes without saying that the sealing mandrel 21 of the injection molding machine is pulled out of the recesses 19 , 20 of the legs 13 , 15 after cooling. From the recesses 13 , 15 then serve to receive a coil core, not shown, which is to partially protrude into the armature receiving chamber 2 .

Es ist vorgesehen, daß das erste Schenkelpaar 12, 14 durch Schnappnasen 22 des oberen Schenkels 12 verrastet ist, die über den unteren Schenkel 14 greifen. Dadurch, daß der obere Schenkel 12 unter Vorspannung den unteren Schenkel 14 übergreift, wird erreicht, daß eine Vormontage möglich wird, wobei desweiteren vorgesehen ist, daß der untere Schenkel 14 des ersten Schenkelpaars 12, 14 unter Vorspannung gegen einen Spulenkör­ perbund 23 anliegt und das zweite Schenkelpaar 13, 15 gegen eine Grundfläche 24 zieht, wodurch die konstruktive Einbaulage des Magnetrückschlußblechs 8 auch bei höherem Spritzdruck ohne Abweichungen gehalten werden kann, so daß eine Abstützung des Magnetrückschlußbleches 8 innerhalb der Spritzgußform entfallen kann und darüber hin­ aus der Spulenkörper 1 mit eingelegtem Magnetrückschlußblech 8 bei der Fertigung bes­ ser händelbar ist.It is envisaged that the first pair of legs 12 , 14 is locked by snap lugs 22 of the upper leg 12 , which engage over the lower leg 14 . By virtue of the fact that the upper leg 12 overlaps the lower leg 14 , preassembly is possible, it also being provided that the lower leg 14 of the first pair of legs 12 , 14 rests against a spool bobbin 23, and that second pair of legs 13 , 15 pulls against a base surface 24 , whereby the structural installation position of the magnetic return plate 8 can be maintained without deviations even at higher injection pressure, so that support of the magnetic return plate 8 within the injection mold can be omitted and moreover from the coil former 1 with an inserted magnetic return plate 8 can be traded during production.

Insbesondere durch Löcher bzw. Ausnehmungen 27 des die beiden Schenkel 12, 13, 14, 15 tragenden Rückschlußblechmittelteils 25, 26 wird dabei eine Spritzdruckentlastung des Magnetrückschlußblechs 8 insgesamt erreicht.In particular, holes or recesses 27 in the rear plate middle part 25 , 26 carrying the two legs 12 , 13 , 14 , 15 achieve an overall pressure relief of the magnetic return plate 8 .

Claims (5)

1. Spulenkörper für ein Elektromagnetventil mit einer Magnetankeraufnahmekammer und einem in dieser angeordneten Ventilsitz zwischen einer ersten Anschlußleitung und der Aufnahmekammer und mit einer zweiten, in diese Aufnahmekammer einmündenden An­ schlußleitung, mit einer gewickelten Spule und mit dieser elektrisch verbundenem Stec­ keranschluß und einem aus zusammengesetzten Teilen gebildeten Magnetrückschluß­ blech, und mit einem aus umspritztem Kunststoff gebildeten Gehäuse, dadurch gekenn­ zeichnet, daß das Magnetrückschlußblech (8) aus zwei U-förmigen Blechteilen (10 und 11) gebildet ist, deren parallele Schenkel (12, 13 und 14, 15) in Einbaulage überlappen und beim Umspritzen des Gehäuses (9) am Spulenkörper (1) dadurch in Einbaulage gehalten sind, daß das erste überlappende Schenkelpaar (12, 14) mit an jedem Schenkel (12, 14) angeformten Kragenabschnitten (16, 17) die Wandung (18) der ersten Anschlußleitung (4) bzw. der Magnetankeraufnahmekammer (2) umfaßt und das zweite Schenkelpaar (13, 15) durch einen durch Ausnehmungen (19, 20) der Schenkel (13, 15) ragenden Abdicht­ dorn (21) der Spritzmaschine für die Magnetankeraufnahmekammer (2) während des Spritzvorgangs in einer vorgegebenen Position fixiert ist.1. Coil body for a solenoid valve with a magnet armature receiving chamber and a valve seat arranged in it between a first connecting line and the receiving chamber and with a second, opening into this receiving chamber to the connecting line, with a wound coil and with this electrically connected plug keranschluß and a composite parts formed magnetic yoke plate , and with a housing formed from molded plastic, characterized in that the magnetic yoke plate ( 8 ) is formed from two U-shaped sheet metal parts ( 10 and 11 ), the parallel legs ( 12 , 13 and 14 , 15 ) in overlap position and are thereby held in the installation position during encapsulation of the housing (9) on the bobbin (1), that the first overlapping pair of legs (12, 14) integrally formed with on each leg (12, 14), collar sections (16, 17) the wall ( 18 ) of the first connecting line ( 4 ) or the armature holder ekammer ( 2 ) and the second pair of legs ( 13 , 15 ) through a through recesses ( 19 , 20 ) of the legs ( 13 , 15 ) projecting sealing mandrel ( 21 ) of the spraying machine for the armature receiving chamber ( 2 ) during the spraying process in a predetermined Position is fixed. 2. Spulenkörper nach Anspruch 1, dadurch gekennzeichnet, daß das erste Schenkelpaar (12, 14) durch Schnappnasen (22) des oberen Schenkels (12) verrastet ist, die über den unte­ ren Schenkel (14) greifen.2. Bobbin according to claim 1, characterized in that the first pair of legs ( 12 , 14 ) is latched by snap lugs ( 22 ) of the upper leg ( 12 ) which engage over the lower leg ( 14 ). 3. Spulenkörper nach Anspruch 2, dadurch gekennzeichnet, daß der obere Schenkel (12) unter Vorspannung den unteren Schenkel (14) übergreift.3. Bobbin according to claim 2, characterized in that the upper leg ( 12 ) overlaps the lower leg ( 14 ) under tension. 4. Spulenkörper nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der untere Schenkel (14) des ersten Schenkelpaars (12, 14) unter Vorspannung gegen einen Spulenkörperbund (23) anliegt und das zweite Schenkelpaar (13, 15) gegen eine Grundfläche (24) zieht. 4. bobbin according to claim 2 or 3, characterized in that the lower leg ( 14 ) of the first pair of legs ( 12 , 14 ) bears against a coil former collar ( 23 ) and the second pair of legs ( 13 , 15 ) against a base ( 24 ) pulls. 5. Spulenkörper nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die die beiden Schenkel (12, 13 und 14, 15) tragenden Rückschlußblechmittelteile (25, 26) zur Spritzdruckentlastung Löcher bzw. Ausnehmungen (27) aufweisen.5. Coil body according to one of the preceding claims, characterized in that the two legs ( 12 , 13 and 14 , 15 ) carrying back plate middle parts ( 25 , 26 ) for spray pressure relief holes or recesses ( 27 ).
DE1998120084 1998-05-06 1998-05-06 Bobbin for a solenoid valve Expired - Fee Related DE19820084B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1998120084 DE19820084B4 (en) 1998-05-06 1998-05-06 Bobbin for a solenoid valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1998120084 DE19820084B4 (en) 1998-05-06 1998-05-06 Bobbin for a solenoid valve

Publications (2)

Publication Number Publication Date
DE19820084A1 true DE19820084A1 (en) 1999-11-11
DE19820084B4 DE19820084B4 (en) 2006-06-08

Family

ID=7866758

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1998120084 Expired - Fee Related DE19820084B4 (en) 1998-05-06 1998-05-06 Bobbin for a solenoid valve

Country Status (1)

Country Link
DE (1) DE19820084B4 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10038306A1 (en) * 2000-03-16 2001-09-20 Continental Teves Ag & Co Ohg Electromagnet for operation of valves in valve block has yoke enclosing coil carrier provided with elongate opening receiving edge of coil carrier for reducing overall size of electromagnet
EP1512894A1 (en) * 2003-09-08 2005-03-09 Bosch Rexroth Teknik AB Valve with waterproof solenoid
DE102004009157A1 (en) * 2004-02-25 2005-09-15 Nass Magnet Gmbh magnetic valve
DE102006004095A1 (en) * 2006-01-28 2007-08-09 Robert Bosch Gmbh Electro-pneumatic seat valve, in particular pilot valve
DE102009016318A1 (en) * 2009-04-06 2010-10-14 Kendrion Binder Magnete Gmbh 3/2-way magnetic valve, has coil winding arranged on plastic coil body, and plastic valve body with valve seat that is lockable by closure element, where coil and valve bodies are formed as single piece made of plastic
WO2014191891A1 (en) * 2013-05-27 2014-12-04 Woco Industrietechnik Gmbh Electromagnetic device, yoke element, and method for producing same
CN108597727A (en) * 2018-04-18 2018-09-28 福建永强力加动力设备有限公司 A kind of shutdown electromagnet
CN110274080A (en) * 2019-07-05 2019-09-24 珠海格力电器股份有限公司 Electromagnetic valve with clamping structure and electric appliance

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040456A1 (en) * 2007-05-12 2008-11-13 Continental Teves Ag & Co. Ohg Magnetic drive for a hydraulic valve of e.g. hydraulic anti-lock brake system, has yoke body comprising housing with laterally opened housing frame, and coil body inserted into housing of yoke body by frame opening
DE102014104540A1 (en) 2014-03-31 2015-10-01 Woco Industrietechnik Gmbh Solenoid valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4419875B4 (en) * 1994-06-07 2004-11-25 Pierburg Gmbh Electromagnetic switch valve

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10038306A1 (en) * 2000-03-16 2001-09-20 Continental Teves Ag & Co Ohg Electromagnet for operation of valves in valve block has yoke enclosing coil carrier provided with elongate opening receiving edge of coil carrier for reducing overall size of electromagnet
EP1512894A1 (en) * 2003-09-08 2005-03-09 Bosch Rexroth Teknik AB Valve with waterproof solenoid
DE102004009157A1 (en) * 2004-02-25 2005-09-15 Nass Magnet Gmbh magnetic valve
DE102006004095A1 (en) * 2006-01-28 2007-08-09 Robert Bosch Gmbh Electro-pneumatic seat valve, in particular pilot valve
DE102006004095B4 (en) * 2006-01-28 2009-03-12 Robert Bosch Gmbh Electro-pneumatic seat valve, in particular pilot valve
DE102009016318A1 (en) * 2009-04-06 2010-10-14 Kendrion Binder Magnete Gmbh 3/2-way magnetic valve, has coil winding arranged on plastic coil body, and plastic valve body with valve seat that is lockable by closure element, where coil and valve bodies are formed as single piece made of plastic
DE102009016318B4 (en) * 2009-04-06 2013-09-26 Kendrion (Villingen) Gmbh magnetic valve
WO2014191891A1 (en) * 2013-05-27 2014-12-04 Woco Industrietechnik Gmbh Electromagnetic device, yoke element, and method for producing same
CN108597727A (en) * 2018-04-18 2018-09-28 福建永强力加动力设备有限公司 A kind of shutdown electromagnet
CN108597727B (en) * 2018-04-18 2023-10-27 福建永强力加动力设备有限公司 Shutdown electromagnet
CN110274080A (en) * 2019-07-05 2019-09-24 珠海格力电器股份有限公司 Electromagnetic valve with clamping structure and electric appliance

Also Published As

Publication number Publication date
DE19820084B4 (en) 2006-06-08

Similar Documents

Publication Publication Date Title
DE69103128T2 (en) Line for fuel and integrated injectors and process for their manufacture.
DE69107042T2 (en) Fuel line.
EP1030967A1 (en) Fuel injector
DE10323398A1 (en) Fuel injection valve
WO1999019620A1 (en) Fuel injection valve
DE4445358A1 (en) Valve and method of making a valve
EP1825135B1 (en) Injection valve
DE3507441C2 (en)
DE19820084A1 (en) Coil body for electromagnetic valve, e.g. for controlling motor vehicle internal combustion engines
DE4310719A1 (en) Method for the production of a magnetic circuit for a valve
DE3207919A1 (en) ELECTROMAGNETICALLY ACTUABLE VALVE
WO1995007201A1 (en) Electrohydraulic pressure-control device
DE68908423T2 (en) ELECTROMAGNETIC NOZZLE VALVE FOR FUEL INJECTION IN MOTOR VEHICLES.
DE102007052224A1 (en) Volume control valve device for use in high pressure fuel pump, has pot-shaped magnetic flux housing including frame-like bracket element that encloses coil arrangement at opposite front sides, where bracket element is formed from plate
EP0525377A1 (en) Valve
DE3207917C2 (en)
EP0876552B1 (en) Distributor device for fuel injection systems
DE60004723T2 (en) Electromagnetic relay, method and device for producing the same
DE19512339B4 (en) Electromagnetically actuated fuel injection valve
DE19858127A1 (en) Fuel injector with electromagnet and connection arrangements
WO1999066195A1 (en) Fuel injector
DE3004424A1 (en) FUEL INJECTOR HOLDER
DE19717459C2 (en) Device for the metered injection of fuel into an internal combustion engine
DE3208348A1 (en) ELECTROMAGNET AGGREGATE
DE19853102A1 (en) Fuel injector

Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: PIERBURG GMBH, 41460 NEUSS, DE

8110 Request for examination paragraph 44
8364 No opposition during term of opposition
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee