US3747583A - Quick insertion arrangement especially for sparkplugs in combustion engines - Google Patents

Quick insertion arrangement especially for sparkplugs in combustion engines Download PDF

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Publication number
US3747583A
US3747583A US00188389A US3747583DA US3747583A US 3747583 A US3747583 A US 3747583A US 00188389 A US00188389 A US 00188389A US 3747583D A US3747583D A US 3747583DA US 3747583 A US3747583 A US 3747583A
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US
United States
Prior art keywords
sleeve
sleeve means
rotation
profile
ignition device
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.)
Expired - Lifetime
Application number
US00188389A
Other languages
English (en)
Inventor
E Spengler
G Georges
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Application granted granted Critical
Publication of US3747583A publication Critical patent/US3747583A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/242—Arrangement of spark plugs or injectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/02—Details
    • H01T13/08—Mounting, fixing or sealing of sparking plugs, e.g. in combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • an arrangement for the quick insertion of the ignition plug comprising a sleeve having a thread formed thereon about its outer surface for cooperation with a correspondingly formed thread in a recess made in the cylinder wall, an inner profile formed on the sleeve, a first profile formed on the ignition plug cooperating with the inner profile of the sleeve and allowing insertion of the insertion with plug into the sleeve in the axial direction, the outer first profile on the ignition plug being constructed to cooperate with means formed on the sleeve to retain the ignition plug in the sleeve after a predetermined rotation of the ignition plug
  • the present invention relates to an arrangement for the quick insertion and the subsequent screwing into an operational position along with its arresting in such position of a member, preferably such position being in a wall portion.
  • the insertion being performed by means of a sleeve screwed into the recess and having an outer thread thereon and which is provided with an inner profile specially designed with the consideration of the outer profile of the member in such a manner that the profile releases the member only at a certain alignment assumed with respect to the sleeve for movement into the axial direction, while otherwise the profile serves as the securing means for the member when the sleeve is screwed into position.
  • Sparkplugs are generally screwed into their operational position. In addition to the required considerable amount of time other difficulties might arise such as, that the sparkplugs frequently are arranged on places which are relatively difficult to reach so that it is not uncommon that a tilting and thereby a damaging of the thread within the bore of the cylinder wall takes place.
  • the member to be inserted carries in the axial direction a pair of profiles which are offset with respect to each other in the axial direction and of which the one which lies closer to the wall portion is the outer profile and the other profile permits the application of a wrench-like tool to establish or release the arresting of the member.
  • the arrangement according to the present invention rests also on the basic principle that the securing of the member is done in a split fashion after its insertion into the sleeve by means of certain profiles while threaded profiles serve for the arresting in its place.
  • the known construction uses a securing surface or profile formed on the member to be inserted which, in case of a sparkplug, is the usual portion for the application of a wrench.
  • the present invention provides a member to be inserted having two profiles of which the first one counted in the direction of insertion serves for the axial securing of the member in the sleeve while the back profile when viewed in the direction of the insertion and placed also on the member to be inserted serves for the application of a tool.
  • This construction makes it possible, for example, in the case of a spark plug, to insert the plug into a wrench and then by axially moving the wrench the sleeve is placed into the recess or bore while through a subsequent rotational movemment of the wrench the arresting is performed by the sleeve being moved together with the plug.
  • This simple operation makes it possible to insert sparkplugs also from below or in a tilted fashion downwardly.
  • the invention also provides the possibility to form the sleeve in a collar-like fashion and by leaving a distance with respect to the other profile formed on the member, which can be a sparkplug, and over which distance the sleeve projects so that a wrench can be shoved between the other profile and in this region of the sleeve.
  • the other profile is formed outwardly with respect to the wall end of the sleeve in a free lying fashion.
  • the sleeve is preferably completely arranged within the recess.
  • the outer and inner profile are projections which rotate together with the sleeve and perform the arresting.
  • the outer and inner profiles preferably form a bayonette connection.
  • the invention also provides that with the increased force of tightening use should be made also of the increasing friction between the cooperating surfaces.
  • the sleeve is provided with means to prevent its falling out from the recess after the arresting has been released.
  • Such means can be in the form of limiting means which limits the rotational movement between the sleeve and the wall, such for example, a pin within the recess which cooperates with a slot or abutting surface on the sleeve. It is also possible to provide such means in the form of a removable ring within the recess which limits the maximum axial rotation of the sleeve after the arresting has been released. Strictly speaking both of the above described types function as rotational limiters and are in the form of an axial boss means.
  • FIG. 1 illustrates a preferred embodiment of the present invention in the form of a sparkplug with the quick inset arrangement according to the present invention in its operating position in the cylinder wall of a combustion engine which is shown in a vertical section and partially illustrating only the cylinder head;
  • FIG. 2 is a top view of the sleeve means according to the present invention.
  • FIG. 3 is a side view of the sleeve means according to FIG. 2, partly in section.
  • FIG. 1 illustrate a cylinder head 1 in vertical cross section having a sparkplug 2 inserted therein.
  • the sparkplug 2 has a pair of outer profiles which are offset with respect'to each other in the axial direction, more particularly, there is a front profile 3 when viewed in the direction of insertion and a back profile 4 when viewed in the direction of insertion and which, as is illustrated in the right half of the sparkplug 2, is a usual hexagonal body portion 4.
  • the left half of the sparkplug 2 illustrates an alternative made in the form of a cam means 5.
  • camming means 5 are provided about the sparkplug in a symmetrical or unsymmetrical fashion and which can be engaged by an appropriate tool.
  • a similar consideration applies also to the formation of the outer profile 3 which is first in the direction of the insertion, that is, it can be made in alternative forms.
  • sparkplug 2 has no threads made thereon, and as a result, it cannot be directly inserted into the recess 6 in the cylinder head 1.
  • securing present here in the form of an axial insertion and a rotation, the latter in the illustrated embodiment requiring less than a full rotation.
  • Such subdivision of the securing is performed by a sleeve 7 which by means of its outer thread 8 is screwed into the recess 6 of the cylinder head 1.
  • the sleeve 7 is also provided with an inner profile which cooperates with the front profile 3 of the sparkplug 2.
  • FIGS. 2 and 3 The specific features of construction if the sleeve 7 are illustrated in FIGS. 2 and 3. With reference to FIG. 2 it is seen that theinner profile of the sleeve 7 is substantially manifested in the form of three transverse projections 9,10 and 11 between which longitudinally running recesses 12,13 and 14 extend and which are designed in such a manner that the sparkplug 2 with its front profile 3 can be inserted into the sleeve 7. Such inserting movement will terminate as soon as the sparkplug 2 with its front cone 15 illustrated in the left half of the showing of FIG. 1 comes to engagement with a counter cone on thecylinder wall 1. As can be seen in the right half illustration of FIG. 1 such conical abutting surface can be obtained by securing on the sparkplug 2 a conical bolt 16 by threads.
  • the outer profile 3 or front profile which is first in the insertion direction on the sparkplug 2 is formed in the shape of three earns the front surface of which are chamfered in order to aid the insertion while their back surfaces run in a plane which is vertical with respect to the axis of the sparkplug 2. After being rotates, such back surfaces engage the back of the transverse projections 9,10 and 1 1 by sliding behind them so that the sparkplug 2 cannot be removed thereafter. Furthermore the surfaces of the outer profile 3 which are considered as the front surfaces when viewed in the direction of rotation cooperate with projections on the sleeve 7 of which only projections 17 and 18 can be seen in FIG. 3., so that during the rotation of the sparkplug 2 which is accomplished by applying an appropriate tool to the back profiles 4 or 5, the sleeve 7 will be carried along by such projections 17 and 18. The thread 8 then takes care of the arresting of the sparkplug.
  • a conical nut 16 By employing a conical nut 16 it preferably carries the profile 3 of the sparkplug 2 which is considered as the front profile when viewed in the direction of inser tion.
  • an arrangement for the quick insertion of said ignition device comprising a sleeve means having a thread formed thereon about its outer surface for cooperation with correspondingly formed thread means in a recess made in said cylinder wall, said recess further containing an abutment surface, an inner profile formed on said sleeve means, a first profile formed on said ignition device cooperating with said inner profile of said sleeve means andallowing insertion of said ignition device into said sleeve means in axial direction at a predetermined alignment of said ignition device relative to said sleeve means only, said outer first profile on said ignition device being constructed to cooperate with means formed on said sleeve means to retain said ignition device in said sleeve means after a predetermined rotation of said ignition device in said sleeve means, a second outer profile formed on said ignition device for the application of an appropriate tool thereto for the rotation of said ignition device, whereby the
  • said preventing means comprises means for limiting the rotation between said sleeve means and said wall of said cylinder head.
  • said preventing means comprise a removable ring means placed in said recess forlimiting the maximum axial movement of said sleeve means during the releasing of said latching of said ignition device.
  • An arrangement for the quick insertion of a memher into an operating position in an apparatus comprising a sleeve means having a thread formed thereon about its outer surface for cooperation with correspondingly formed thread means in a recess made in said apparatus, an inner profile formed on said sleeve means, said recess further containing an abutment surface, a first profile formed on said member cooperating with said inner profile of said sleeve means and allowing insertion of said member into said sleeve means in axial direction, at a predetermined alignment of said member relative to said sleeve means only, said outer first profile on said member being constructed to cooperate with means formed on said sleeve means to retain said member in said sleeve means after a predetermined rotation of said member in said sleeve means, a second outer profile formed on said member for the application of an appropriate tool thereto for the rotation of said member, whereby the application of a rotational movement by said tool will cause limited rotation of said member in said slee
  • said preventing means comprises a rotation limiting means for limiting the rotation between the sleeve means and the wall of said apparatus.
  • said preventing means comprise a removable ring means placed in said recess for limiting the maximum axial movement of said sleeve means during the releasing of said latching of said member.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spark Plugs (AREA)
US00188389A 1970-10-13 1971-10-12 Quick insertion arrangement especially for sparkplugs in combustion engines Expired - Lifetime US3747583A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2050183A DE2050183C3 (de) 1970-10-13 1970-10-13 Anordnung nach Art einer Schnellbefestigung für eine Zündkerze

Publications (1)

Publication Number Publication Date
US3747583A true US3747583A (en) 1973-07-24

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ID=5784970

Family Applications (1)

Application Number Title Priority Date Filing Date
US00188389A Expired - Lifetime US3747583A (en) 1970-10-13 1971-10-12 Quick insertion arrangement especially for sparkplugs in combustion engines

Country Status (3)

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US (1) US3747583A (de)
DE (1) DE2050183C3 (de)
GB (1) GB1348329A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373478A (en) * 1981-04-27 1983-02-15 Rifat Sultan A Apparatus for releasably securing ignition devices
US5706847A (en) * 1996-11-14 1998-01-13 Strait; William P. Quick replacement spark plug assembly
US5839403A (en) * 1997-07-21 1998-11-24 Grant; Larry D. Quick change plug
US5947071A (en) * 1996-03-21 1999-09-07 Alcamo; John S. Tool free quick change spark plug mechanism
WO2006105137A1 (en) * 2005-03-30 2006-10-05 Robertshaw Controls Company Quick connect thermocouple mounting device and associated method of use

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US831224A (en) * 1904-07-09 1906-09-18 Conrad Hammer Tapping device.
US2412821A (en) * 1944-03-04 1946-12-17 Texas Co Internal-combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US831224A (en) * 1904-07-09 1906-09-18 Conrad Hammer Tapping device.
US2412821A (en) * 1944-03-04 1946-12-17 Texas Co Internal-combustion engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373478A (en) * 1981-04-27 1983-02-15 Rifat Sultan A Apparatus for releasably securing ignition devices
US5947071A (en) * 1996-03-21 1999-09-07 Alcamo; John S. Tool free quick change spark plug mechanism
US5706847A (en) * 1996-11-14 1998-01-13 Strait; William P. Quick replacement spark plug assembly
US5839403A (en) * 1997-07-21 1998-11-24 Grant; Larry D. Quick change plug
WO2006105137A1 (en) * 2005-03-30 2006-10-05 Robertshaw Controls Company Quick connect thermocouple mounting device and associated method of use
US20060219285A1 (en) * 2005-03-30 2006-10-05 Nguyen Can T Quick connect thermocouple mounting device and associated method of use
US8039729B2 (en) 2005-03-30 2011-10-18 Robertshaw Controls Company Quick connect thermocouple mounting device and associated method of use

Also Published As

Publication number Publication date
DE2050183C3 (de) 1975-09-18
GB1348329A (en) 1974-03-13
DE2050183B2 (de) 1975-02-13
DE2050183A1 (de) 1972-04-20

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