CN106796030B - Being used for the heating plug-in unit axially suppressed being capable of the calandria of electrically heated glow plug and the manufacturing method of subordinate - Google Patents
Being used for the heating plug-in unit axially suppressed being capable of the calandria of electrically heated glow plug and the manufacturing method of subordinate Download PDFInfo
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- CN106796030B CN106796030B CN201580054417.9A CN201580054417A CN106796030B CN 106796030 B CN106796030 B CN 106796030B CN 201580054417 A CN201580054417 A CN 201580054417A CN 106796030 B CN106796030 B CN 106796030B
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- 239000000463 material Substances 0.000 claims description 57
- 238000003825 pressing Methods 0.000 claims description 34
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- 238000005266 casting Methods 0.000 claims description 16
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000990 Ni alloy Inorganic materials 0.000 description 4
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- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
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- 229910001021 Ferroalloy Inorganic materials 0.000 description 2
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- 239000003350 kerosene Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
- F23Q2007/004—Manufacturing or assembling methods
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/027—Heaters specially adapted for glow plug igniters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Abstract
The present invention provides a kind of for capableing of the calandria (1) of electrically heated glow plug, the heating plug-in unit (12) that the calandria has scorching hot pipe (11) and is arranged in the scorching hot pipe (11), the insulating powder (122) that the heating plug-in unit has at least one described coil (121) and is extruded with this, wherein, the heating plug-in unit (12) is the component axially suppressed.In addition, the present invention provides a kind of for manufacturing the method for being used to be capable of the calandria (1) of electrically heated glow plug.
Description
Technical field
The present invention relates to the calandrias for capableing of electrically heated red-hot glow plug or glow plug, and specifically one
Kind glow plug-calandria, with the heating plug-in unit being arranged in inside it, wherein the heating plug-in unit is included at least as electricity
The resistive element coil and insulating powder that work.The invention further relates to it is a kind of for can electrically heated glow plug in this way
Calandria according to the present invention manufacturing method.
Background technique
Known glow plug is at this time not only used as the chamber (Self-lighting of such as compressed air in this way in internal combustion engine
The ante-chamber of diesel motor, rotation pocket or combustion chamber) in cold start auxiliary member, and for example make in other application fields
For the propellant heating device in flexibility-fuel-drive system common-rail injection system, as in the combustion using kerosene operation
Cold start auxiliary member when the starting of gas turbine and oil heater etc..As with diesel motor, (diesel motor is compared
Possess higher efficiency in the internal combustion engine run by gasoline) known motor vehicle in cold start auxiliary member, they it is specific and
Speech supports starting process in cold start because in the starting process, the diesel fuel that is sprayed have no obstacle from
Row igniting is general infeasible.Equally, after the starting, also usually significantly, it is arranged using glow plug as the heat of form
Source, to improve the blowdown firing and the discharge of its exhaust gas of the motor, wherein different fuel qualities also can reduce compressed
Air/diesel fuel mixtures ignition performance.Corresponding to this, in the modern motor vehicle with alternative drive system, such as
With in flexibility-fuel-driving device motor vehicle namely such drive system: its can using gasoline, alcohols methanol and
The arbitrary mixture of ethyl alcohol and these three fuel is run, and when temperature is lower, the igniting of fuel has difficulty,
In, the fuel in corresponding common-rail injection system is advantageous by glow plug to heat.
In order to tackle the problem of being previously mentioned, in the combustion chamber of diesel motor or in flexibility-fuel-motor vehicle common rail
It is general that the profession that at least one is capable of electrically heated glow plug namely GLP(English is respectively present in spraying system under normal circumstances
Read " glow plug glow plug "), it is preheated in initial phase by means of the glow plug or the diesel motor or lucky
Aalcohols fuel is heated in the flexibility-fuel-drive system operation.Here, the glow plug used usually has work
For the coil that the resistive element of electricity works, the coil or the spire being formed from different materials being connected with each other by two
It is grouped as, namely is made of a heating coil and a regulating winding being connected with this heating coil, otherwise only by one
The so-called unicoil composition of one coil i.e., the coil combine the property of regulating winding and heating coil in unique line
In circle.
Glow plug with the coil 91 being made of heating coil section 911 and regulating winding section 912 is (as it is scheming
Example shown in 8 like that) is for example known as so-called Duratherm- chromium-red-hot glow plug by Bosch.In it
Glow plug 9 shown in face includes coil 91, which is arranged in the scorching hot pipe 92 of metal, wherein the scorching hot pipe 92 is protected
It holds in shell 93.The coil 91 is in the still thermally conductive powder filler 94 that the scorching hot pipe 92 is embedded in electrical isolation.Line
The exposed tip of an end and scorching hot pipe 92 for an end namely heating coil section 911 for circle 91
Inside is connected, wherein the scorching hot pipe 92 can also be known as scorching hot needle or heating stylus.Another end of the coil 91,
Namely an end of the regulating winding section 912 is connected with connecting link pin 95, wherein the connecting link pin 95 and the line
The interconnecting piece of circle 91 shows as the positive contact of the glow plug 9.The negative contact of the coil 91 by the scorching hot pipe 92 and after
It is continuous to be constructed by leading to the shell 93 of the motor body.The connecting link pin 95 passes through electrical isolation relative to scorching hot pipe 92
Scorching hot seal of tube portion 96 hold and held relative to shell 93 using the shell sealing 97 of electrical isolation.In addition, round plug
98 are arranged in the electrical contact of the positive contact for coil 91, connecting link pin 93 free end, wherein the insulating disc
99 are arranged for the electrical isolation between round plug 98 and shell 93.The coil 91, scorching hot pipe 92, insulating powder 94, connection
Pin shaft 95 and scorching hot seal of tube portion 96 show as the so-called calandria of the glow plug, also referred to as heater or scorching hot herein
Needle.
In the glow plug 9(" m-GLP " of metal) conventional structure above-mentioned in, the coil 91 is initially introduced into described
It in scorching hot pipe 92, is for example connected by welding with this scorching hot pipe, hereafter, the scorching hot pipe 92 is filled out using thermally conductive and electrical isolation
Powder 94 is filled to fill, seal and be worked into specific external dimensions by the so-called method of swaging.The master that swages
It is executed for compressing the inside of the scorching hot pipe 92, to guarantee the appearance from the coil 91 towards the scorching hot pipe 92
Face it is good thermally conductive.But in through compression process caused by swaging, so that the largely landform of the coil 91
Become.But here, in the metal or metal alloy such as ferroalloy or nickel alloy for the coil 91 using high ductibility
When, spiral linear diameter is capable of increasing, and the circular cross section of script of the coil 91 is accordingly egg circle.For described
Coil 91 hard and in the case where quite not ductile material, such as refractory metal such as tungsten and molybdenum, the deformation passes through institute
It states to swage and also show to a greater degree, wherein although the spiral linear diameter hardly changes, 91 edge of coil
Its spool bending.Swage, that is to say, that the deformation obtained in of helix can result in herein the coil 91 through short
The convolution on road, the short circuit between scorching hot pipe 92 and coil 91, using crackle as damage of the helix of form etc..Any
In situation, thus the electrical property of the coil 91 can be deteriorated significantly and the function and quality of the glow plug 9 can be shown accordingly
Land variation.
Summary of the invention
In order to solve the problems, such as the aforementioned of the prior art, it is proposed that the feature with claim 1 for can electricity plus
The calandria of the glow plug of heat, the glow plug of feature with claim 4 and the feature with claim 5 it is corresponding
Manufacturing method.Advantageous modification of the invention is characterized by the feature of dependent claims.
Specifically, a viewpoint of the invention is to provide the calandria for capableing of electrically heated glow plug, calandria tool
The heating plug-in unit for having scorching hot pipe and being arranged in the scorching hot pipe, the heating plug-in unit at least by coil (also referred to as scorching hot coil) and by
This insulating powder being extruded composition, wherein the heating plug-in unit is axial downtrodden component.It will axial downtrodden component
(component being also referred to as axially extruded) is interpreted as the component formed by different components, and the component is each other by downtrodden
The compacting or compacting process implemented on the axial direction of component are so connected by means of at least one compacting tool set: so that by
It shape that the component of compacting keeps its final and can be operated as brittle material.Here, such pressing die
Tool is usually made of two pressure moulds (also referred to as pressing die), which is loaded with component to be extruded using pressure,
In, there is component to be extruded described in general pressing mold holding.Perhaps, the pressing mold can be also one of a construction package
Point, last downtrodden component should be packed into the construction package.(the heating plug-in unit is described for the heating plug-in unit therefrom generated
It is made of after compacting at least described coil and compressed insulating powder) it can also be known as the compact powder-complex of coil-.
Scorching hot pipe is usually unilateral closed, tubulose component in calandria according to the present invention, the component or
Can be configured to individual component (component can be maintained in the shell of the glow plug) can also or sometimes construct
For a part of the shell of the glow plug.
The scorching hot pipe can be formed by corresponding metal herein, preferably be formed by high-temperature metal alloys such as nickel alloy.
Here, the coil is embedded into insulating powder as built-in heat conductor, wherein the coil or be so-called single substance
Coil or unicoil (a combination thereof heating function and regulatory function) or be that (it is by least two for so-called double substance coils
The spiral part formed by different raw material being connected with each other forms, that is to say, that by heating coil and the tune being connected with this
Nodel line circle is formed).Here, using iron-containing alloy, example usually as regulating winding material for the raw material of double substance coils
Such as CoFe8, also or nickel alloy, in conjunction with heat conductor alloy, such as the ferroalloy CrAl 25 5 with 70% iron share.As tune
Nodel line loop material can also use molybdenum or tungsten as the alternative to this.The anode is by the first end of coil come structure
It makes, and the cathode is generated by the interconnecting piece of the second end of the coil and the scorching hot pipe, which passes through
The shell of the preferred metal of glow plug is connected with the motor body as grounding points.Here, in scorching hot pipe and the electricity
Containing component can also be set between the shell of heat plug.It is preferably about the insulating powder, the heating according to the present invention
The insulating powder of body has thermal expansion coefficient, which is at least similar to the coil surrounded in size and temperature tendency
Material thermal expansion coefficient.As furthermore as known to 27 46 595 A1 of DE, use molybdenum or tungsten as spiral
When material, the insulating powder is preferably able to by magnesia (MgO), aluminium oxide (Al2O3), silicon nitride, boron nitride, silicon carbide
Or aluminium nitride composition.
According to a preferred modification of calandria according to the present invention, the heating plug-in unit can also have powder
Casting die, the powder casting die are arranged in the inner hollow room of the coil, that is to say, that are arranged in through preferred spiral helicine line
It encloses in surrounded hollow chamber or coil core, the convolution of the coil is wound round the coil core, wherein preferably, it is described exhausted
Edge powder and the powder casting die are made of different dusty materials, or wherein, the insulating powder and the powder casting die
It is made of the identical dusty material with different granular sizes.
Here, as material aluminium oxide can be used in the inside of the coil, and for example in the convolution of the coil
Between and remaining hollow chamber between coil and scorching hot pipe in use magnesia.The advantage here is that compared to outside, to
It is interior to provide poor thermally conductive, and thus reach the significant improved heating speed and power consumption of the glow plug.?
Powder casting die is interpreted as squeezing downtrodden component by powder, which next can be as using single component as form
Powder complex operates.This has the advantage that powder casting die can be loaded into the coil simultaneously in the present invention
And next can be extruded in pressing process together with the coil and the insulating powder, and the powder of the powder casting die
It is not mixed before the compacting with insulating powder.
According to a preferred modification of calandria according to the present invention, the coil of the heating plug-in unit burns with described
Heat pipe electrical connection.Specifically, it is described heating plug-in unit coil (coil at least partly from heating plug-in unit in exposed and structure
Made the cathode or negative contact of the coil) with the inside of the scorching hot pipe the scorching hot pipe closure, from the shell
Exposed end (preferably passing through welding or soldering) material engagement ground connection.It is inserted suppressing the heating in the scorching hot pipe
When part, the coil can be connect in which carry out material engagement before suppressing the heating plug-in unit with the scorching hot pipe.
An other viewpoint according to the invention, additionally provides glow plug, which has such calandria.Make
For the other component of such glow plug with calandria according to the present invention, these are (as from mentioned above existing
In technology it is known as) to be furthermore possible to be shell, electrical isolation that the connecting link pin is insulated relative to the shell
Shell sealing, be arranged on the connecting link pin exposed end round plug and insulating disc, which is set
For the electrical isolation between round plug and shell.The connecting link pin being capable of the second end in glow plug with the coil
(end is opposed relative to the first end of the coil being connected with the scorching hot pipe and constructs the anode of the coil
Perhaps positive contact) in electrical contact for example by screwing, being pressed into or similar method.Herein also it can be considered that,
Conductive compression element is set between coil and connecting link pin, which facilitates the electrical connection between these components.
An other viewpoint according to the invention provides a kind of for manufacturing the heating for capableing of electrically heated glow plug
Body, the method particularly for manufacturing calandria as described above, wherein described to be wrapped in this sequence according to the method for the present invention
Include following steps:
The step of forming coil, in this wise, that is, this coil has predetermined after the following step axially suppressed
Moulding, that is to say, that at least one specific screw diameter and making with the specific spacing between single convolution
Type；
It is provided using centering auxiliary part and the step of the centering at least coil；
The step of insulating powder for surrounding the coil is provided；
The step of at least described coil and insulating powder being axially compressed to heating plug-in unit；
The step of a part of the inner space of the scorching hot pipe is filled using packing material, which is not added
Hot plug-in unit occupies；
Connecting link pin is encased in the step in the scorching hot pipe, and establishes being electrically connected between connecting link pin and coil
Socket part preferably passes through indentation, caulk, magnetic forming, screws, welds or be brazed；And
The step of inner space of the scorching hot pipe is sealed using sealing element.
In other words, the coil is so shaped as first step in the method according to the invention: so that this line
Circle after being squeezed with the insulating powder, one or more screw diameters with convolution that boil down to designs in advance and
The moulding of specific spacing between single convolution, so-called coil construction.It herein, can be using single substance as coil
Coil or double substance coils with the heating coil and regulating winding formed by different raw material.Axially suppressing institute
Stating coil and the insulating powder became in the step of heating plug-in unit, correspondingly, insulation of the coil together with the electrical isolation
Powder is pressed or is compressed to complex, wherein the heating plug-in unit is axial downtrodden component, also referred to as axial quilt
The component of extruding.It is understood as the component formed by different components, the component is each other by the axis in downtrodden component
The compacting or compacting process implemented on direction are so connected by means of at least one compacting tool set: so that downtrodden structure
It shape that part keeps its final and can be operated as brittle material.Such compacting tool set is usually by least one
A pressure mould (also referred to as pressing die) is formed, which can be loaded with component to be extruded using pressure, wherein or
The scorching hot pipe itself, otherwise mating die or cooperation pressure mould held together with the pressing mold component to be extruded and
Thereby produce back-pressure.Here, the pressure mould can have smooth pressed surface.
According to a preferred modification according to the method for the present invention, at least described coil is provided and surrounds this coil
Insulating powder the step of can also include powder casting die, which be arranged in the inside of the coil, that is to say, that cloth
It sets in the hollow chamber or spiral shell core surrounded by the spiral helicine coil, wherein preferably, the insulating powder and described
Powder casting die is made of different dusty materials, or wherein, and the insulating powder and the powder casting die are by with different
The identical dusty material of granular size forms.Powder casting die is interpreted as component being suppressed by powder and may hardening, it should
Next component can be operated as by the powder complex of form of single component.This has the advantage that in the present invention
Be, powder casting die can be loaded into the coil and next the compacting the step of in together with the coil and described
Insulating powder can be squeezed into heat plug-in unit, and the powder of the powder casting die does not mix before pressing with insulating powder
It closes.
According to a preferred modification according to the method for the present invention, executes in the scorching hot pipe and axially suppress
At least described coil and the insulating powder become the step of heating plug-in unit.Here, centering auxiliary part is axially suppressed described
It is removed from the scorching hot pipe before step.Specifically, the anteposition of the coil and the insulating powder in the compacting
In in unilateral closed scorching hot pipe, and then it is pressed in the scorching hot pipe and is compressed to heating plug-in unit, wherein
The coil is electrically connected before the compacting with the scorching hot pipe, preferably passes through welding or soldering.Here, the axial direction
Compacting can be occurred by pressure mould, the pressure mould or apply stressed side or end face with smooth, otherwise
Wherein, the pressure mould applies stressed side preferably and has gap that perhaps notch accommodates in the gap or notch
The first end of the coil, and such end of the specifically described coil: it constructs positive contact, the positive touching
Head enters in contact with the connecting link pin later.The pressure mould apply stressed end can also certainly also have become smaller
Overall diameter, wherein then, the axial compacting the step of in, the pressure mould applies stressed end by the coil
First end surround, so that axial pressing pressure is not applied to the coil in the axial compacting the step of
On first end.It means that the first end of the coil has coil diameter, which allows, the pressure
In the winding for applying the first end that stressed end rests on the coil of power mould.Because here, the second of the coil
End has lesser coil diameter, then in described axial the step of suppressing, only pressure is applied to the such of the coil
On section: the section has lesser coil diameter, and the section with biggish coil diameter of coil does not obtain axial direction
Press power and be retained in its preformed moulding, and other sections of the coil are pressed and compress.
According to according to the method for the present invention one alternative preferred modification, it is axial suppress at least described coil and
The insulating powder independently executes in pressure setting as the step of heating plug-in unit independent of scorching hot pipe, compacting dress
Set at least from pressure mould, with pressure mould and pressing mold, preferably cylindrical pressing mold form.Here, using centering auxiliary part
In the case of provide and centering at least the coil the step of, the step of insulating powder for surrounding the coil and axial compacting, are provided
The step of at least described coil and the insulating powder for surrounding this coil become the heating plug-in unit can be in the pressure setting
It executes.After these steps, the heating plug-in unit for completing compacting is encased in the scorching hot pipe, and is preferably connect by material
The connection method of conjunction, which is for example welded or is brazed, to be electrically connected the coil with the scorching hot pipe.Next, according to the present invention
Method is to fill the step of a part of the inner space of scorching hot pipe using packing material, connecting link pin is encased in described burn
It the step of electrical connection section is established in heat pipe and between connecting link pin and coil and is sealed using sealing element described scorching hot
The step of inner space of pipe, continues.
According to another preferred modification according to the method for the present invention, the pressure mould applies stressed side
Capable of having gap, perhaps notch accommodates the first end of coil in the gap or notch, and specifically described
Such end of coil: it constructs the positive contact, next which enters in connection with the connecting link pin.Make
For the additional aspects or alternative to this, cooperate applying stressed side and capable of also having gap or notch for pressure mould,
Accommodate another end of the coil in the gap or notch, and specifically such end of the coil
Portion: its engage in end material exposed from the shell of its closure with the inside of the scorching hot pipe, preferably pass through welding
Or soldering is attached.
Using the pressure setting with pressure mould, cooperation pressure mould and pressing mold, here, the coil can
Before described axial the step of suppressing and during the insulating powder is being filled into the pressing mold, pass through centering member
It is maintained at the middle part of the pressing mold, so that the insulating powder is distributed uniformly around the coil.Specifically, here,
The coil by means of the centering member that works as centering auxiliary part and the middle part for being encased in the pressing mold.The centering structure
Part can be centering sleeve etc. herein.Next, the insulating powder is filled into the remaining hollow chamber of the pressing mold simultaneously
And this entirety is shaken, so that the insulating powder is uniformly distributed.Hereafter it removes the centering member and adds additionally exhausted
Next edge powder until the coil is covered by insulating powder completely, and shakes, again thus all insulating powders
It is evenly distributed on before the compacting in the pressing mold.Therefore, centering auxiliary part quilt before described axial the step of suppressing
It is removed from the pressing mold.Finally, the content of the pressing mold using pressure mould axially namely the pressing mold longitudinal axis
Direction on be pressed to form heating plug-in unit.Compact powder-the complex of the coil-being pressed into then takes out and fills from pressing mold
Enter into the scorching hot pipe and connect with this scorching hot pipe, then the connecting link pin be encased in the shell and with the line
The free first end of circle is connected.Preferably, before the pressing step, (end has the second end of the coil
To be connect with the scorching hot pipe) using can remove material, so-called occupying device (occupying device preferably by plastic foam or
The nickel alloy group as polymer or in metal situation such as similar spongiform material such as polyamide, polyurethane of person
At) surround, it is protected to make this end of the coil independently of insulating powder during the axial compacting the step of
It holds.After the compacting, the occupying device removed from the second end of the coil and this second end with it is described scorching hot
Pipe is connected, such as by welding or being brazed.The other first end of the coil passes through with the contact of the connecting link pin
Caulk, magnetic forming (Magnetumformung) are screwed, are pressed into, welding or similar method is realized.
Invention advantage
Using the calandria according to the present invention for glow plug or manufacturing method according to the invention is utilized, can be ensured
From coil towards the thermally conductive of the scorching hot pipe surface, and the diminution of the scorching hot pipe by means of the completion combination swaged can be saved
Or it at least substantially reduces this and swages.It has been ensured as a result, from coil or from the heating coil section of coil towards described scorching hot
Pipe it is thermally conductive, wherein realize the compression step saved significantly at the scorching hot pipe for completing combination by avoiding swaging.By
Calandria is produced when not swaging, so that the coil is less damaged or completely lossless, this significantly improves the methods
The robustness of reproducibility and the glow plug.
This invention therefore provides the calandria and one kind manufacturing method related with this for glow plug, the manufacturers
Faxian, which lands, reduces or has even completely avoided not wished for during the swaging of the scorching hot pipe coil of the calandria
The deformation of prestige.This, which puts, is inserted by axially squeezing coil and electrical isolation but thermally conductive insulating powder as compressed heating
Part (before or after the heating plug-in unit is encased in the scorching hot pipe) is realized, wherein the heating plug-in unit is in axial direction
Conductive and heating plug-in unit that is being electrically insulated in radial directions on direction.
Detailed description of the invention
Fig. 1 shows the electricity for the first preferred embodiment according to the invention in the cross sectional view of free cutting
The calandria of heat plug；
Fig. 2 shows the electricity for the second preferred embodiment according to the invention in the cross sectional view of free cutting
The calandria of heat plug；
Fig. 3 shows the electricity for third preferred embodiment according to the invention in the cross sectional view of free cutting
The calandria of heat plug；
Fig. 4 shows the showing in Fig. 1 for the glow plug according to the first preferred embodiment in cross sectional view
Calandria manufacturing method mutual connecting the step of；
Fig. 5 shows the showing in Fig. 2 for the glow plug according to the second preferred embodiment in cross sectional view
Calandria manufacturing method mutual connecting the step of win part；
Fig. 6 shows the showing in Fig. 3 for the glow plug according to third preferred embodiment in cross sectional view
Calandria manufacturing method mutual connecting the step of win part；
Fig. 7 shows the showing in Fig. 2 for the glow plug according to the second preferred embodiment in cross sectional view
Calandria alternative manufacturing method mutual connecting the step of win part；And
Fig. 8 shows the glow plug according to the prior art in cross sectional view.
Specific embodiment
The calandria according to the present invention 1 for the glow plug according to the first preferred embodiment is shown in FIG. 1,
In the glow plug, for clarity, component such as shell and insulating component and coupling element are eliminated.Shown in Fig. 1
There is calandria 1 the scorching hot pipe 11 of metal, the heating plug-in unit 12(heating plug-in unit being arranged in inside it to be arranged in the scorching hot pipe
The inside of 11 closed end 112) and connecting link pin 13, the connecting link pin is by contact element 14 and the heating plug-in unit
12 in connection.The heating plug-in unit 12 and the connecting link pin 13 are herein from the open end of the scorching hot pipe 11
111 sides are encased in this scorching hot pipe, which is opposed to arrange relative to the closed end 112 of the scorching hot pipe 11.
The heating plug-in unit 12 is made of the complex being extruded from coil 121 and insulating powder 122.The coil
The end 121 first end 1211(is opposed to arrange relative to the closed end 112 of the scorching hot pipe 11) it establishes
Heat the interconnecting piece of plug-in unit 12 and the contact element 14.The second end 1212 of the coil 121 and the scorching hot pipe 11
Closed end 112 is in electrical connection, wherein the warp of the second end 1212 of the coil 121 and the scorching hot pipe 11
112 material of the end engagement ground of closure is in connection, such as method is: the second end 1212 of the coil 121 with it is described
The inside of scorching hot pipe 11 is welded at the closed end 112 of the scorching hot pipe or method is: the second of the coil 121
End 1212 penetrates closed 112 ground of end and connect with the engagement of this end material.
The part of connecting link pin 13 being located in the scorching hot pipe 11 and described contact element 14(contact element can
By it is conductive and can in the form of elastically-deformable body portion, such as with form presence metal spring, graphite flake) by being electrically insulated
Packing material 15 such as ceramic powders, sintering ceramics, surround ceramic foam, wherein the packing material 15 passes through annular
Insulation sealing element 16 and be maintained in the scorching hot pipe 11.The packing material 15 is opened wide by the scorching hot pipe 11
End 111 insert.Replace the packing material 15, can be used as alternative setting cavity.
Similar to Fig. 1, Fig. 2 shows add for the according to the present invention of the glow plug according to the second preferred embodiment
Hot body 1' for clarity, eliminates component such as shell and insulating component and coupling element in the glow plug.
The part of calandria 1' according to the present invention shown in Fig. 2 have metal scorching hot pipe 11', be arranged in it
The heating plug-in unit 12'(in the face heating plug-in unit is arranged in the inside of the closed end 112' of the scorching hot pipe 11') and connection
Pin shaft 13', the connecting link pin and the heating plug-in unit 12' are in connection.
The heating plug-in unit 12' and connecting link pin 13' is herein from the open end 111' of the scorching hot pipe 11'
Side is encased in this scorching hot pipe, which is opposed to arrange relative to the closed end 112' of the scorching hot pipe 11'.
The heating plug-in unit 12' is made of the complex being extruded from coil 121' and insulating powder 122'.It is described
The end the first end 1211'(of coil 121' is opposed to cloth relative to the closed end 112' of the scorching hot pipe 11'
Set) establish the interconnecting piece for heating plug-in unit 12' and the connecting link pin 13'.Herein, the second end of the coil 121'
1211'' is different from embodiment shown in Fig. 1 and by from the heating plug-in unit 12' towards the side of the connecting link pin 13'
It is formed to the coil section of stretching, which extend into the gap 131' of the connecting link pin 13' and couple with this
The bottom of pin shaft carries out material engagement ground connection, wherein the gap 131' is arranged in described in the direction of the connecting link pin 13'
In the end of coil 121'.Similar to embodiment shown in Fig. 1, the second end 1212'' of the coil 121' and institute
The closed end 112' for stating scorching hot pipe 11' is in electrical connection, such as method is: the second end of the coil 121'
It is welded at the closed end 112' of the scorching hot pipe on the inside of the 1212'' and scorching hot pipe 11' or method is: is described
The second end 1212'' of coil 121' is connect with penetrating the closed end 112' with carrying out material engagement with this end.
The part of connecting link pin 13' being located in the scorching hot pipe 11' and being inserted from the heating for the coil 121'
The end 1211' that part 12' stretches out is wrapped by the packing material 15' such as ceramic powders, sintering ceramics, ceramic foam etc. being electrically insulated
It encloses, wherein the packing material 15' is maintained in the scorching hot pipe 11' by the sealing element 16' of the insulation of annular.Institute
Packing material 15' is stated to insert by the open end 111' of the scorching hot pipe 11'.Replace the packing material 15', also can
Optionally it is also provided with cavity.
It is shown for the glow plug according to third preferred embodiment according to the present invention similar to Fig. 1 and 2, Fig. 3
Calandria 1' for clarity, eliminate component such as shell and insulating component and coupling element in the glow plug.
Calandria 1'' according to the present invention shown in fig. 3 shows the scorching hot pipe 11'' of metal, is arranged in its inside
The heating plug-in unit 12''(heating plug-in unit be arranged in the scorching hot pipe 11'' closed end 112'' inside) and connection
Pin shaft 13'', the connecting link pin and the heating plug-in unit 12'' are in connection.
The heating plug-in unit 12'' and connecting link pin 13'' is herein from the open end of the scorching hot pipe 11''
111'' side is encased in this scorching hot pipe, which is opposed to relative to the closed end 112'' of the scorching hot pipe 11''
Arrangement.Different from embodiment above-mentioned, the scorching hot pipe 11'' of the third preferred embodiment has the straight of change
Diameter and from the open end 111'' of the scorching hot pipe 11'' directly towards the closed end of the scorching hot pipe 11''
112'' is made of the first section 11A'' with biggish diameter and the second section 11B'' with lesser diameter, wherein
Transition part between the first section 11A'' and the second section 11B'' carries out with gradually becoming smaller.As a result, described scorching hot
Infundibulate is produced in pipe 11'', which directly becomes narrower towards the closed end 112'' of the scorching hot pipe 11''.
The heating plug-in unit 12'' is made of the complex being extruded from coil 121'' and insulating powder 122''.Institute
The closed end 112'' that the end the first end 1211''(of coil 121'' is stated relative to the scorching hot pipe 11'' is opposed
Ground arrangement) establish the interconnecting piece for heating plug-in unit 12'' and the connecting link pin 13''.Coil 121'' with the connecting link pin
13'' be in connection in first end 1211'' be different from embodiment above-mentioned herein and by from it is described heating insert
Part 12'' is formed towards the coil section that the direction of the connecting link pin 13'' is stretched out, which has interior with what is increased
Diameter through widened moulding namely convolution shape, wherein, the spacing between single convolution and its screw diameter is greater than
Situation in the part of the coil 121'' being arranged in the insulating powder 122''.The first end of the coil 121'
Portion 1211'' winds partially around the connecting link pin 13'' and connect with carrying out material engagement with this connecting link pin.It is similar
In embodiment above-mentioned, the closed end of the second end 1212'' of the coil 121'' and the scorching hot pipe 11''
112'' is in electrical connection, such as method is: the second end 1212'' of the coil 121'' and scorching hot pipe 11''
Inside is welded at the end 111'' of the scorching hot pipe or method is: the second end 1212'' of the coil 121'' is penetrated
It is connect with carrying out material engagement with this end to the closed end 112''.
The part being located in the scorching hot pipe 11'' of connecting link pin 13'' and the coil 121' from the heating
Plug-in unit 12'' stretch out first end 1211'' by be electrically insulated packing material 15'' such as ceramic powders, sintering ceramics, ceramics
Foam etc. surrounds, wherein the packing material 15'' is maintained at the scorching hot pipe by the sealing element 16'' of the insulation of annular
In 11''.
Here, the packing material 15'' is extend into using a part 151'' is pressed into the heating plug-in unit 12''
In shrinkage cavity 1221'' in, specifically extend into the shrinkage cavity 1221'' being pressed into the insulating powder 122''.Insulation
The part 151'''s of the powder 122'' and packing material 15'' namely packing material 15' being located in the shrinkage cavity 1221''
Resulting overlapping is located at by funnel caused by the scorching hot pipe 11'', namely from described the of scorching hot pipe 11''
In the region of the transition part of one section 11A'' to the second section 11B''.Replace the packing material 15'', can be used as standby
Scheme is selected to be also provided with cavity.
Fig. 4 shows the sequence of single step (a) to (f), which shows as shown in Fig. 1 and above described
The manufacturing method of bright calandria 1.Here, preformed coil 121 is encased in described burn first in first step (a)
It is connected in heat pipe 11 and with the closed end 112 of the scorching hot pipe 11 at its second end 1212, such as method is:
The inside of the second end 1212 of coil 121 and the scorching hot pipe 11 is welded at its closed end 112.Here, described
The first end 1211 of coil 121 is maintained at the middle part in the scorching hot pipe 11, centering auxiliary part dress by centering auxiliary part 2
Enter into the scorching hot pipe 11.In step (b) followed by, the insulating powder 122 is filled into the scorching hot pipe 11,
And the first end 1211 of the coil 121 continues through the middle part that centering auxiliary part 2 is maintained in the scorching hot pipe 11, thus
The insulating powder 122 is distributed uniformly around the coil 121 and fully covers this coil.Next, being walked at one
Suddenly in (c), the centering auxiliary part 2 is removed from the scorching hot pipe 11 and pressure mould 3 is encased in the scorching hot pipe 11
In, the pressure mould and entered in contact by the complex that coil 121 and insulating powder 122 are formed.The coil 121 is in this state
In also always have its preshaped initial length L1.By the pressure mould 3 and by the scorching hot pipe 11, by power F
It is applied on the coil-insulating powder-complex from two sides.Here, the scorching hot pipe 11 is preferably held in and (does not show
Out) in holding parts etc., so as to provide the counter-force for the power applied by the pressure mould 3.By being applied from two sides
It is from step (c) to step (d) that the coil-insulating powder-is multiple on plus-pressure F to the coil-insulating powder-complex
Zoarium is compressed and is squeezed to be desired to be formed by coil 121 and through insulating powder 122 be compacted or compressed
Complex be form heating plug-in unit 12, namely squeeze be the compact powder-complex of coil-.This one or two by coil 121 and absolutely
The complex boil down to that edge powder 122 is formed is claimed by the process of the heating plug-in unit 12 of form of the compact powder-complex of coil-
For axial pressing step.Here, the coil 121 has reduced total length L 2 after compressing by the pressure mould 3,
The total length is less than the initial length L1.The pressure mould 3 is then removed from the scorching hot pipe 11, wherein coming of new
Heating plug-in unit 12 remains in the scorching hot pipe 11, referring to step (e).Next, the contact element 14 and the connection
Pin shaft 13 is encased in the scorching hot pipe 11, wherein the contact element 14 establishes the first end 1211 and connection in coil 121
Electrical contact between outbound axis 13.In addition, the remaining space utilization in the scorching hot pipe 11 is using ceramic powders as form
Packing material 15 is filled, which is arranged in institute completely around the contact element 14 and the connecting link pin 13
State the part in scorching hot pipe 11.The inside of the scorching hot pipe 11 is also sealed by the sealing element 16.
Fig. 5 shows the form through modification of the sequence of steps shown in Fig. 4, wherein, step (c), (d) and (f)
Replaced by step (c'), (d') and (f'), and thus they show as in heating shown in Fig. 2 and disclosed above
The manufacturing method of body 1'.Remaining step is identical as the corresponding step of the method shown in Fig. 4.Pressure mould 3''s and
The significant difference of visible method shown in fig. 5 in the characteristic of the first end 1211'' of the coil 121'.As
In step (c') it is visible as, the pressure mould 3', which applies stressed side or endface at it, has gap 31', at this
The first end 1211' of the coil 121' is accommodate in gap in the axial compacting.It hereby is obtained that, the coil
121' is squeezed by the pressure mould 3' and the insulating powder 122', and here, the initial length L1 be reduced to through
Reduced total length L 2.Thus that furthermore stretches out is existed using the first end 1211' of the coil 121' as the coil section of form
It is not compressed and is retained in its initial model in the step of axial compacting.By the pressure mould 3' from described scorching hot
After being removed in pipe 11', it is retained in the scorching hot pipe 11' by heating plug-in unit 12' caused by the axial compacting.It connects down
Come, the connecting link pin 13' is encased in the scorching hot pipe 11', and establishes the first end in the coil 121'
Electrical contact between 1211' and the connecting link pin 13'.Here, the first end 1211' of the stretching of the coil 121' is accommodated
In the 131' of gap, in the end side which is arranged in the connecting link pin in the connecting link pin 13', the end side is towards described
The closed end 112' of scorching hot pipe 11' is directed toward.In addition, the remaining space utilization in the scorching hot pipe 11' is with ceramics
Powder is the packing material 15' of form to fill, and the packing material is described scorching hot completely around being arranged in for connecting link pin 13'
The first end 1211'' of the stretching of part and the coil 121' in pipe 11'.The inside of the scorching hot pipe 11' also passes through
The sealing element 16' is sealed.
An other form through modification of the sequence of steps shown in Fig. 4, wherein, step is shown in FIG. 6
Suddenly (c), (d) and (f) is replaced by step (c''), (d'') and (f''), and thus they show as sum shown in fig. 3
The manufacturing method of calandria 1'' disclosed above.The corresponding step phase of remaining step and the method shown in Fig. 4
Together.Shown in Fig. 6 further in the form through modification, the heating plug-in unit 12'' is before the compacting equally with coil
121'' and insulating powder 122'' is that form is loosely disposed in the scorching hot pipe 11'', wherein the of the coil 121''
The two end 1212'' closed end 112'' material engagement with the scorching hot pipe 11'' in being electrically connected.?
In step (c''), the pressure mould 3'' is added in the scorching hot pipe 11' again, wherein the first of the coil 121''
End 1211'' has so big screw diameter: although so that it is maintained at the scorching hot pipe by centering auxiliary part 2''
Middle part in 11'', but the pressure mould 3'' is arranged in this helical coil medial rotation across the spiral convolution and is utilized it
Stressed end face rest is applied on the insulating powder 122''.The pressure mould 3'', which applies stressed end at it, to be had
Thus the overall diameter to become smaller, the overall diameter have taper.The initial length L1 of the remainder of the coil 121'' is located at herein
In the insulating powder 122'', namely surrounded completely by this insulating powder.It is carried out by means of pressure mould 3'' using power F
Power apply, the insulating powder 122'' for surrounding the remainder of the coil 121'' compress and thus its total length reduction
Onto L2, the coil 121'' is correspondingly compressed.Due to the taper for applying stressed end of the pressure mould 3'', by phase
The mating die answered is pressed into the insulating powder 122'', so that this insulating powder ramps up highland around the pressure mould 3''
Distribution, and thus the shrinkage cavity 1221'' generated is pressed into the insulating powder 122'', referring to step (d'').
The centering auxiliary part 2'' the axially compacting the step of during be retained in the scorching hot pipe 11'', so as to by institute
The first end 1211'' for stating coil 121'' is continually maintained in middle part and thus to guide the pressure mould 3'' at middle part.
Therefore compressed insulating powder 122'' extends past the second section 11B'' of the small diameter with the scorching hot pipe 11''
And by the transition part between the first section 11A'' and gradually smaller second section 11B'', referring to Fig. 3.Coil
Thus the first end 1211'' of 121'' does not obtain axial press power and keeps the shape of its script.By the pressure
Mould 3'' remains in institute after removing in the scorching hot pipe 11'', through heating plug-in unit 12'' caused by the axial compacting
It states in scorching hot pipe 11''.Next, the connecting link pin 13'' is encased in the scorching hot pipe 11'' and at least partly stretches
Entering into the first end 1211'' of the coil 121'', wherein the connecting link pin 13' is contacted with this first end, thus
Electrical contact is established between the first end 1211'' and the connecting link pin 13'' of the coil 121''.In addition, including institute
State shrinkage cavity 1221'' interiorly, the remaining space utilization in the scorching hot pipe 11'' is using ceramic powders as the filling material of form
Material 15'' is filled, the packing material completely around connecting link pin 13'' the part that is arranged in the scorching hot pipe 11'' with
And the first end 1211'' of the stretching of the coil 121''.Here, the packing material 15'' utilizes a part 151''
It extend into the shrinkage cavity 1221'' being pressed into the heating plug-in unit 12'', specifically extend into and be pressed into the insulation
In shrinkage cavity 1221'' in powder 122''.The inside of the scorching hot pipe 11'' is also sealed by the sealing element 16''.
The alternative method with step (B), (C), (D), (E) and (F) is shown in FIG. 7, wherein, manufacture heating
Body 1', as the calandria from Fig. 2 it is known.Here, the pressure setting is by pressure mould using pressure setting 4'
41', cooperation pressure mould 42' and pressing mold 43' composition.The pressing mold 43' can have the form of single-piece, can also have certainly
There is two-piece type or multi-piece type moulding.The first end 1211'' of the coil 121' passes through centering auxiliary part 2' guarantor herein
The middle part in the pressing mold 43' is held, specifically the middle part in the through hole 431' of pressing mold 43', as in step (B)
As it can be seen that.In addition, the second end 1212'' of coil 121' is contained in the 421' of gap, the gap setting is in the cooperation
Pressure mould 42''s applies in stressed end face.The insulating powder 122' is filled into the pressing mold 43', and the coil
The first end 1211' of 121' continues through the middle part that centering auxiliary part 2' is maintained in the pressing mold 43', thus the insulation
Powder 122' is distributed uniformly around the coil 121' and covers this coil as fully as possible.Next, being walked at one
Suddenly in (C), the centering auxiliary part 2' is removed from the pressing mold 43' and the pressure mould 41' is encased in the pressing mold
In 43', so that the coil 121' is together with the insulating powder 122' in the pressure mould 41' and the cooperation pressure mould 42'
Between be maintained in the through hole 431' of the pressing mold 43'.
Here, the first end 1211'' of the coil 121' is contained in the gap 411' of the pressure mould 41'.It connects down
Come, pressure F is applied on the pressure mould 41' or pressure F is applied on the cooperation pressure mould 42', and the line
Circle 121' is compressed to heating plug-in unit 12' by axial together with the insulating powder 122', thus the total length of the coil 121' from
L1 is compressed to L2, referring to step (D).The first end 1211' and the second end 1212' of coil 121' is by it between described
Placement in gap 411' and 421' and be not continued compression.The first end 1211' and the second end 1212'' energy of coil 121'
The plastic foam that can remove enough is utilized respectively to surround, so that this coil to be kept separate from during the step of axially suppressing
Insulating powder 122'.In step (E), the heating plug-in unit 12' can be taken out from the pressure setting 4' and can
The plastic foam is removed, so that two end 1211' and 1212' of the coil 121' are independently of insulating powder 122' from institute
It states and is stretched out in heating plug-in unit 12'.Next, the heating plug-in unit 12' is encased in the scorching hot pipe 11' in step (F), and
And the second end 1212'' of coil 121' is connect with the closed end 112' material engagement of the scorching hot pipe 11', from
And these are in electrical connection each other.Next, the connecting link pin 13' is encased in the scorching hot pipe 11', and establish
Electrical contact between the first end 1211'' and the connecting link pin 13' of the coil 121'.
Here, the first end 1211' of the stretching of the coil 121' is contained in the 131' of gap, the gap is described
It is arranged in the end side of the connecting link pin in outbound axis 13', closed end 112' of the end side towards the scorching hot pipe 11'
It is directed toward.In addition, the remaining space utilization in the scorching hot pipe 11' is filled out using ceramic powders as the packing material 15' of form
It fills, the packing material is completely around the part of connecting link pin 13' being arranged in the scorching hot pipe 11' and the coil
The first end 1211' of the stretching of 121'.The inside of the scorching hot pipe 11' is also sealed by the sealing element 16'.
The technical characteristic of the calandria of glow plug and its manufacturing method embodiment above-mentioned is not limited to accordingly
It the embodiment of explanation and can correspondingly exchange each other.
Claims (15)
1. a kind of for capableing of the calandria (1 of electrically heated glow plug； 1'；1''), which has scorching hot pipe (11；
11'；11'') and it is arranged in the scorching hot pipe (11； 11'；Heating plug-in unit (12 in 11'')； 12'；12''), the heating
Plug-in unit has at least one coil (121； 121'；The insulating powder (122 121'') and with this being extruded； 122'；
122''), wherein the heating plug-in unit (12； 12'；It 12'') is the component axially suppressed, and wherein, the heating plug-in unit
(12； 12'；12'') also there is powder casting die, which is arranged in the coil (121； 121'；121'') interior
In portion's hollow chamber, wherein the insulating powder (122； 122'；122'') and the powder casting die is by different dusty materials
Composition, or wherein, the insulating powder (122； 122'；122'') and the powder casting die is by big with different particles
Small identical dusty material composition.
2. calandria (1 described in accordance with the claim 1； 1'；1''), wherein the heating plug-in unit (12； 12'；12'')
Coil (121； 121'；121'') with the scorching hot pipe (11； 11'；11'') it is electrically connected.
3. calandria (1 according to claim 2； 1'；1''), wherein by welding or being brazed, the heating is inserted
Part (12； 12'；Coil (121 12'')； 121'；121'') with the scorching hot pipe (11； 11'；11'') it is electrically connected.
4. one kind has calandria (1 as any one of preceding claims； 1'；1'') being capable of electrically heated electricity
Heat plug, the glow plug also have for accommodating the calandria (1； 1'；Shell 1''), at least one electrical isolation for
Connecting link pin (13； 13'；Shell sealing, round plug and the insulating disc 13'') being isolated between the shell, the insulating disc quilt
It is arranged for being electrically insulated between round plug and shell.
5. a kind of for manufacturing the calandria (1 for being used for capableing of electrically heated glow plug； 1'；1'') according to claim 1 to
Calandria (1 described in any one of 3； 1'；Method 1'') has following step:
So form-wound coil (121； 121'；At least one portion 121''): so that this coil is in subsequent axial compacting
The step of after there is predetermined moulding；
Using centering auxiliary part (2；Provide in the case where 2'') and feel relieved at least described coil (121； 121'；121'')；
It provides and surrounds the coil (121； 121'；Insulating powder (122 121'')； 122'；122'')；
Axially suppress at least described coil (121； 121'；121'') and surround this coil insulating powder (122； 122'；
122'') become heating plug-in unit (12； 12'；12'')；
Utilize packing material (15； 15'；15'') fill the scorching hot pipe (11； 11'；One of inner space 11'')
Point, which is not heated plug-in unit (12； 12'；12'') occupy；
By connecting link pin (13； 13'；13'') it is encased in the scorching hot pipe (11； 11'；In 11''), and in connecting link pin
(13； 13'；13'') and coil (121； 121'；Electrical connection is established between 121'')；And
Utilize sealing element (16； 16'；16'') seal the scorching hot pipe (11； 11'；Inner space 11'').
6. according to the method for claim 5, wherein in the scorching hot pipe (11； 11'；The axial direction is executed in 11'')
Suppress at least described coil (121； 121'；121'') and insulating powder (122； 122'；122'') become heating plug-in unit
(12； 12'；12'') the step of, wherein by the coil (121 before described axial the step of suppressing； 121'；
121'') it is electrically connected with the scorching hot pipe (11).
7. according to the method for claim 6, wherein will by welding or soldering before described axial the step of suppressing
The coil (121； 121'；121'') it is electrically connected with the scorching hot pipe (11).
8. according to method described in claim 6 or 7, wherein the axial direction is compressed on the scorching hot pipe (11； 11'；11'')
In pass through pressure mould (3； 3'；3'') carry out.
9. according to the method for claim 8, wherein the stressed side of applying of the pressure mould (3') has gap
(31') accommodates the first end (1211') of the coil (121') or applying for the pressure mould (3'') in the gap
Stressed end there is the overall diameter to become smaller and the axial compacting the step of in by the coil (121'') the
One end (1211'') surrounds, to not have axial pressing pressure to be applied to the line in the axial compacting the step of
It encloses on the first end (1211'') of (121'').
10. according to the method for claim 6, wherein in pressure setting, (4') the middle execution axial compacting is at least described
Coil (121') and insulating powder (122') become the step of heating plug-in unit (12'), and the pressure setting includes at least pressure mould
(41'), cooperation pressure mould (42') and pressing mold (43').
11. according to the method for claim 10, wherein the pressure setting (4') in perform using centering auxiliary
There is provided and feel relieved in the case where part (2) at least coil (121') the step of, the insulation for surrounding the coil (121') is provided
The step of powder (122') and the axial insulating powder (122') suppressed at least described coil (121') and surround this coil become
The step of heating plug-in unit (12').
12. according to method described in claim 10 or 11, wherein the stressed side of applying of the pressure mould (41') has
Gap (411') accommodates the first end (1211') of coil (121') in the gap, and/or wherein, described to match resultant pressure
Mould (42') applies stressed side with gap (421'), accommodates the second end of the coil (121') in the gap
Portion (1212').
13. according to the method for claim 12, wherein surround the coil (121') using the material that can be removed
At least described the second end (1212'), so that this coil is kept separate from insulating powder during described axial the step of suppressing
Last (122').
14. according to the method for claim 13, wherein the material that can be removed is plastic foam.
15. according to method described in any one of claim 5 to 7, wherein remove institute before described axial the step of suppressing
State centering auxiliary part (2).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014220235.3A DE102014220235A1 (en) | 2014-10-07 | 2014-10-07 | Radiator for an electrically heated glow plug with axially pressed heating insert, and associated manufacturing method |
| DE102014220235.3 | 2014-10-07 | ||
| PCT/EP2015/070827 WO2016055233A1 (en) | 2014-10-07 | 2015-09-11 | Heating element for an electrically heatable sheathed glow plug, comprising an axially pressed heating insert, and associated manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106796030A CN106796030A (en) | 2017-05-31 |
| CN106796030B true CN106796030B (en) | 2019-07-09 |
Family
ID=54252252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580054417.9A Expired - Fee Related CN106796030B (en) | 2014-10-07 | 2015-09-11 | Being used for the heating plug-in unit axially suppressed being capable of the calandria of electrically heated glow plug and the manufacturing method of subordinate |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3204693A1 (en) |
| CN (1) | CN106796030B (en) |
| DE (1) | DE102014220235A1 (en) |
| WO (1) | WO2016055233A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019045109A (en) * | 2017-09-06 | 2019-03-22 | 日本特殊陶業株式会社 | Glow plug |
| DE102017215936A1 (en) * | 2017-09-11 | 2019-03-14 | Robert Bosch Gmbh | Method for producing a glow plug |
| DE102019127689A1 (en) * | 2019-10-15 | 2021-04-15 | Türk & Hillinger GmbH | Electric tubular heater with connection bolt and manufacturing process for electric tubular heater with connection bolt |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB859659A (en) * | 1958-06-07 | 1961-01-25 | Bosch Gmbh Robert | Improvements in glow plugs for internal combustion engines |
| CN1167212A (en) * | 1996-05-31 | 1997-12-10 | 日本特殊陶业株式会社 | Structure for pressing-in electric heating plug |
| JP2000356343A (en) * | 1999-06-16 | 2000-12-26 | Bosch Braking Systems Co Ltd | Ceramic heater type glow plug |
| JP2007240030A (en) * | 2006-03-06 | 2007-09-20 | Ngk Spark Plug Co Ltd | Method of manufacturing glow plug |
| CN103228992A (en) * | 2010-12-06 | 2013-07-31 | 罗伯特·博世有限公司 | Glow plug and method for the production thereof |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3234633A (en) * | 1962-09-28 | 1966-02-15 | Gen Electric | Method of making a sheathed electric heating unit |
| DE2746595A1 (en) | 1977-10-15 | 1979-04-26 | Bosch Gmbh Robert | GLOW PLUG FOR COMBUSTION MACHINERY |
| DE3911831A1 (en) * | 1989-04-11 | 1990-10-18 | Bosch Gmbh Robert | Glow-plug for Diesel engine - has heating coil threaded into hollow end of contact shaft and embedded in insulating powder |
| IT1240312B (en) * | 1990-01-16 | 1993-12-07 | B 80 Srl | SPARK PLUG FOR DIESEL MOTORS OF MOTOR VEHICLES PROVIDED WITH A TUBULAR DIGUAINA PRESENTING A REDUCTION IN DIAMETER IN CORRESPONDENCE WITH THE CLOSED END |
| DE19756988C1 (en) * | 1997-12-20 | 1999-09-02 | Daimler Benz Ag | Electrically heated glow plug or glow stick for internal combustion engines |
| DE19956019C2 (en) * | 1998-11-24 | 2001-09-27 | Bosch Braking Systems Co | Glow plug with a ceramic heating device and method for producing this glow plug |
| DE19928037C1 (en) * | 1999-06-18 | 2000-05-25 | Daimler Chrysler Ag | Electrically heated glow plug/rod for combustion engine has corrosion-resistant glow tube closed at ends with electrically conducting, compressed powder filling containing embedded coil |
| JP4572492B2 (en) * | 2000-11-13 | 2010-11-04 | ボッシュ株式会社 | Ceramic glow plug and manufacturing method thereof |
| DE10134956A1 (en) * | 2001-07-23 | 2003-02-20 | Beru Ag | Glow plugs and process for their manufacture |
| JP4870640B2 (en) * | 2007-10-05 | 2012-02-08 | 日本特殊陶業株式会社 | Glow plug and manufacturing method thereof |
-
2014
- 2014-10-07 DE DE102014220235.3A patent/DE102014220235A1/en not_active Withdrawn
-
2015
- 2015-09-11 WO PCT/EP2015/070827 patent/WO2016055233A1/en active Application Filing
- 2015-09-11 EP EP15775109.0A patent/EP3204693A1/en not_active Withdrawn
- 2015-09-11 CN CN201580054417.9A patent/CN106796030B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB859659A (en) * | 1958-06-07 | 1961-01-25 | Bosch Gmbh Robert | Improvements in glow plugs for internal combustion engines |
| CN1167212A (en) * | 1996-05-31 | 1997-12-10 | 日本特殊陶业株式会社 | Structure for pressing-in electric heating plug |
| JP2000356343A (en) * | 1999-06-16 | 2000-12-26 | Bosch Braking Systems Co Ltd | Ceramic heater type glow plug |
| JP2007240030A (en) * | 2006-03-06 | 2007-09-20 | Ngk Spark Plug Co Ltd | Method of manufacturing glow plug |
| CN103228992A (en) * | 2010-12-06 | 2013-07-31 | 罗伯特·博世有限公司 | Glow plug and method for the production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014220235A1 (en) | 2016-04-07 |
| CN106796030A (en) | 2017-05-31 |
| EP3204693A1 (en) | 2017-08-16 |
| WO2016055233A1 (en) | 2016-04-14 |
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Granted publication date: 20190709 Termination date: 20200911 |