CN1167212A - Structure for pressing-in electric heating plug - Google Patents
Structure for pressing-in electric heating plug Download PDFInfo
- Publication number
- CN1167212A CN1167212A CN 96110475 CN96110475A CN1167212A CN 1167212 A CN1167212 A CN 1167212A CN 96110475 CN96110475 CN 96110475 CN 96110475 A CN96110475 A CN 96110475A CN 1167212 A CN1167212 A CN 1167212A
- Authority
- CN
- China
- Prior art keywords
- hole portion
- sleeve pipe
- pressed
- glow plug
- front hole
- 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
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Abstract
The present invention provides a heater plug with a press-in structure that when the sleeve is pressed into the inner hole portion of adapter, it can smoothly press the sleeve in the heater plug. When the sleeve is pressed into the heater plug fixed in the inner hole of the adapter, its pressing-in structure is positioned in the press-in side of the above-mentioned sleeve in the inner hole of the adapter, and is equipped with a front hole portion whose hole diameter is greater than the outside diameter of said sleeve, and the cone angle of inner hole of adapter component from front hole portion to press-in portion is 70-80 deg., and best of all, the inside diameter of the above-mentioned front hole portion is by 0.2-0.5 mm larger than outside diameter of the above-mentioned steeve, and the length of the above-mentioned front hole portion is more than 5mm.
Description
The present invention relates to sleeve pipe is pressed into the pressing structure of the glow plug that installs joint endoporus place.
Fig. 1 is the schematic representation of original glow plug.1 is glow plug among the figure, and 2 is nut, and 3 is the terminal screw, and 4 is insulator, and 5 is endoporus portion, and 6 is joint, and 7 is electrode bar, and 8 is coil, and 9 is insulating powder, and 10 is sleeve pipe.Usually, glow plug has clamped insulator 4 at terminal screw 3 and electrode bar 7 and 6 of fittings, and installs and fixes insulator 4 with nut 2.And, in body 10, be filled with the insulating powder 9 that is used to keep electrode bar 7 and coil 8 insulation, and be pressed into interior bore portion 5 places that are fixed on its internal diameter joint 6 more smaller than the external diameter of body 10.
When making this glow plug, sleeve pipe 10 need be pressed into the interior bore portion 5 of joint.Yet,, have the problem that is difficult to during fabrication quickly and reliably the interior bore portion 5 of sleeve pipe 10 press-in connectors 6 for structure shown in Figure 1.And, be difficult to correctly sleeve pipe 10 is fixed to endoporus portion 5 places of joint 6 because of being the parts of making respectively, after installing, sleeve pipe 10 also can produce deflection.
In order to address these problems, as shown in Figure 2, be pressed into side at the sleeve pipe of endoporus portion 5 its internal diameter front hole portion 11 bigger than the internal diameter of endoporus portion 5 is set, so that guiding sleeve 10 enters front hole portion 11, can make that to be pressed into operation easy.
When the glow plug of making as shown in Figure 2, the drill bit that normally will have required diameter inserts endoporus portion 5, and cutting endoporus portion 5 is to form front hole portion 11.Yet the front hole portion 11 of Xing Chenging like this though can easily sleeve pipe 10 be pressed into by guiding sleeve 10, is not done special special consideration to carried out the transition to its internal diameter by front hole portion 11 than the tapering of its little endoporus portion 5.Therefore also having this tapering when being pressed into sleeve pipe tends to tangle sleeve pipe 10 front ends and causes problems such as inserting difficulty.
At the problems referred to above, the objective of the invention is to provide a kind of glow plug, and it has with sleeve pipe press-in connector accessory endoporus portion time any position and can not produce and hang the pressing structure that draws or the like obstacle, can smoothly be pressed into.
In order to address the above problem, realize above-mentioned purpose, this the glow plug that installs joint endoporus place that sleeve pipe is pressed into of claim 1 of the present invention is characterised in that, the aforementioned sleeve pipe of aforementioned joint endoporus is pressed into side, have the front hole portion bigger, and be 70 °-80 ° by the tapering that this front hole portion carries out the transition to the joint endoporus of the portion of being pressed into than this cover external diameter of pipe.
And glow plug as claimed in claim 2 is characterised in that the internal diameter of aforementioned front hole portion is than the big 0.2-0.5 millimeter of external diameter of aforementioned sleeve pipe.
And glow plug as claimed in claim 3 is characterised in that the length of aforementioned front hole portion is more than 5 millimeters.
For the described glow plug of claim 1, because the sleeve pipe of fitting endoporus is pressed into side and has the front hole portion bigger than this cover external diameter of pipe, and the tapering that is carried out the transition to the joint endoporus of the portion of being pressed into by this front hole portion is 70 °-80 °, so can not hinder sleeve pipe being pressed into endoporus portion.
For the described glow plug of claim 2, because the internal diameter of front hole portion so can reliably sleeve pipe be pressed into to endoporus portion, also can not reduce the intensity of fitting front end than the big 0.2-0.5 millimeter of external diameter of aforementioned sleeve pipe simultaneously.
And, for the described glow plug of claim 3, because the length of its aforementioned front hole portion can be pressed into sleeve pipe endoporus portion more than 5 millimeters so need not apply excessive load.
Fig. 1 is the sectional drawing of original glow plug.
Fig. 2 is original glow plug sectional drawing.
Fig. 3 is a glow plug sectional drawing of the present invention.
Fig. 4 is the part enlarged view of the pressing structure in the glow plug sectional drawing shown in Figure 3.
Fig. 3 shows glow plug of the present invention.Among the figure, 1 is glow plug, and 2 is nut, and 3 is the terminal screw, and 4 is insulator, and 5 is endoporus portion, and 6 is joint, and 7 is electrode bar, and 8 is line chart, and 9 is insulating powder, and 10 is sleeve pipe, and 11 is front hole portion.Glow plug has clamped insulator 4 at terminal screw 3 and electrode bar 7 and 6 of fittings, and nut 2 installs and fixes insulator 4.And, in body 10, be filled with the insulating powder 9 that is used to keep electrode bar 7 and coil 8 insulation, be inserted into front hole portion 11 than the big 0.2-0.5 millimeter of external diameter of body 10.Then as shown in Figure 4, the front end of sleeve pipe 10 is pressed into the endoporus portion 5 more smaller than the external diameter of sleeve pipe 10 by the conical surface 12.
At this moment, as shown in Figure 4, the angle [alpha] that preferably makes the conical surface 12 is 70 °-80 °.And preferably as shown in Figure 3, the length A that makes front hole portion 11 is more than 5 millimeters.As seen from the figure, the part with tapering here is not included in the length of front hole portion.
If have the pressing structure of aforesaid glow plug, just can successfully sleeve pipe be pressed into, and when sleeve pipe is pressed into endoporus portion, not need to apply extra load, so can not lose sleeve pipe.And after sleeve pipe being packed in joint endoporus portion, sleeve pipe can not rock, can deflection, thus can constitute firmly solid glow plug.And the glow plug with this pressing structure has higher productivity, thereby can realize producing expeditiously.
Claims (3)
1. one kind is pressed into sleeve pipe the glow plug that installs joint endoporus place, it is characterized in that: the aforementioned sleeve pipe at aforementioned fitting endoporus is pressed into side, have the front hole portion bigger than the external diameter of this pipe, and transitting to the tapering of the joint endoporus of the portion of being pressed into by this front hole portion, is 70 °-80 ° with respect to the angle with the face of glow plug axis normal.
2. glow plug as claimed in claim 1 is characterized in that the external diameter big 0.2-0.5 millimeter of the internal diameter of aforementioned front hole portion than aforementioned sleeve pipe.
3. glow plug as claimed in claim 1 or 2, the length that it is characterized in that aforementioned front hole portion is more than 5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96110475A CN1060252C (en) | 1996-05-31 | 1996-05-31 | Structure for pressing-in electric heating plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96110475A CN1060252C (en) | 1996-05-31 | 1996-05-31 | Structure for pressing-in electric heating plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1167212A true CN1167212A (en) | 1997-12-10 |
| CN1060252C CN1060252C (en) | 2001-01-03 |
Family
ID=5120823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96110475A Expired - Fee Related CN1060252C (en) | 1996-05-31 | 1996-05-31 | Structure for pressing-in electric heating plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1060252C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100516507C (en) * | 2002-05-14 | 2009-07-22 | 日本特殊陶业株式会社 | Controller of glow plug and glow plug |
| CN106796030A (en) * | 2014-10-07 | 2017-05-31 | 罗伯特·博世有限公司 | Calandria and the manufacture method of subordinate for being capable of electrically heated glow plug with the axially heating plug-in unit of compacting |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88204213U (en) * | 1988-04-22 | 1988-12-21 | 北京市首都汽车公司建外修理厂 | Electrically-heated glowing plug |
| CN2118171U (en) * | 1992-02-01 | 1992-10-07 | 国营长青机械厂 | Electronic igniter |
| DE4236656A1 (en) * | 1992-10-30 | 1994-05-05 | Bosch Gmbh Robert | Tubular metal housing for spark plugs, glow plugs and sensors |
-
1996
- 1996-05-31 CN CN96110475A patent/CN1060252C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100516507C (en) * | 2002-05-14 | 2009-07-22 | 日本特殊陶业株式会社 | Controller of glow plug and glow plug |
| CN106796030A (en) * | 2014-10-07 | 2017-05-31 | 罗伯特·博世有限公司 | Calandria and the manufacture method of subordinate for being capable of electrically heated glow plug with the axially heating plug-in unit of compacting |
| CN106796030B (en) * | 2014-10-07 | 2019-07-09 | 罗伯特·博世有限公司 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1060252C (en) | 2001-01-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20010103 |