CN1060252C - Structure for pressing-in electric heating plug - Google Patents
Structure for pressing-in electric heating plug Download PDFInfo
- Publication number
- CN1060252C CN1060252C CN96110475A CN96110475A CN1060252C CN 1060252 C CN1060252 C CN 1060252C CN 96110475 A CN96110475 A CN 96110475A CN 96110475 A CN96110475 A CN 96110475A CN 1060252 C CN1060252 C CN 1060252C
- Authority
- CN
- China
- Prior art keywords
- sleeve pipe
- joint
- front hole
- glow plug
- endoporus
- 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 - Fee Related
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Abstract
The present invention provides an electric heating plug which is provided with a pressing-in structure, wherein the pressing-in structure can smoothly press a sleeve pipe in an inner hole part of a joint without obstacles. The sleeve pipe is pressed in the electric heating plug fixedly arranged to the inner hole of the joint, and the pressing-in structure is provided with a front hole part at the pressing-in side of the sleeve pipe of the inner hole of the joint, wherein the front hole part is more than the outer diameter of the pipe 1. An angle of a conical surface transiting from the front hole part to the inner hole of the joint fitting of the pressing-in part is from 70 DEG to 80 DEG, the inner diameter of the front hole part is best to be 0.2mm to 0.5mm more than the outer diameter of the sleeve pipe, and the length of the front hole part 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 the big front hole portion 11 of internal diameter that side is provided with this endoporus portion 5 of its internal diameter at the sleeve pipe of endoporus portion 5, 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 view of the problems referred to above of the prior art, for achieving the above object, the glow plug of the present invention's first scheme, by joint with endoporus portion, be pressed into the sleeve pipe of the endoporus portion that installs this joint, its part is inserted the electrode bar in this joint and the sleeve pipe, be arranged at the coil of this electrode bar one end, be arranged at the terminal of this electrode bar the other end, be installed in the insulator between this terminal and electrode bar and the joint, fix the nut of this insulator, and the insulating powder of filling in this sleeve pipe constitutes, be pressed into side at the sleeve pipe of above-mentioned joint endoporus and have front hole portion, the joint endoporus that is carried out the transition to the portion of being pressed into by this front hole portion forms the conical surface, it is characterized in that: the internal diameter of above-mentioned front hole portion is greater than the external diameter of sleeve pipe, and the above-mentioned conical surface is 70 °～80 ° with respect to the angle with the face of glow plug axis normal.
The glow plug of alternative plan of the present invention, on the basis of the structure of above-mentioned first scheme, the internal diameter of above-mentioned front hole portion is bigger 0.2～0.5 millimeter than the external diameter of above-mentioned sleeve pipe.
The glow plug of third party's case of the present invention, above-mentioned first or the basis of the structure of alternative plan on, the length of above-mentioned front hole portion is more than 5 millimeters.
Adopt the glow plug of above-mentioned first scheme, because the side that is pressed into sleeve pipe in joint endoporus portion has the front hole portion bigger than the external diameter of sleeve pipe, the conical surface angle 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, sleeve pipe can not had the joint endoporus portion that is pressed into with hindering.
Adopt the glow plug of above-mentioned alternative plan, because the internal diameter of front hole portion is bigger 0.2～0.5 millimeter than the cover external diameter of pipe, so, can reliably sleeve pipe be pressed into joint endoporus portion, and can not reduce the intensity of joint front end.
Adopt the glow plug of above-mentioned third party's case, because the length of front hole portion is more than 5 millimeters, so, need not apply excessive load and just sleeve pipe can be pressed into endoporus portion.
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 the front hole portion 11 bigger 0.2-0.5 millimeter than the 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. glow plug, by joint with endoporus portion, be pressed into the sleeve pipe of the endoporus portion that installs this joint, its part is inserted the electrode bar in this joint and the sleeve pipe, be arranged at the coil of this electrode bar one end, be arranged at the terminal of this electrode bar the other end, be installed in the insulator between this terminal and electrode bar and the joint, fix the nut of this insulator, and the insulating powder of filling in this sleeve pipe constitutes, be pressed into side at the sleeve pipe of above-mentioned joint endoporus and have front hole portion, the joint endoporus that is carried out the transition to the portion of being pressed into by this front hole portion forms the conical surface, it is characterized in that: the internal diameter of above-mentioned front hole portion is greater than the external diameter of sleeve pipe, and the above-mentioned conical surface 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 internal diameter of above-mentioned front hole portion is bigger 0.2～0.5 millimeter than the external diameter of above-mentioned sleeve pipe.
3. glow plug as claimed in claim 1 or 2 is characterized in that: the length of above-mentioned 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 CN1167212A (en) | 1997-12-10 |
| CN1060252C true 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1505298B1 (en) * | 2002-05-14 | 2019-07-10 | NGK Spark Plug Co., Ltd. | Controller of glow plug and glow plug |
| DE102014220235A1 (en) * | 2014-10-07 | 2016-04-07 | Robert Bosch Gmbh | Radiator for an electrically heated glow plug with axially pressed heating insert, and associated manufacturing method |
Citations (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 |
| CN1086162A (en) * | 1992-10-30 | 1994-05-04 | 罗伯特·博施有限公司 | The tubular metal housing that spark plug, glow plug and transducer are used |
-
1996
- 1996-05-31 CN CN96110475A patent/CN1060252C/en not_active Expired - Fee Related
Patent Citations (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 |
| CN1086162A (en) * | 1992-10-30 | 1994-05-04 | 罗伯特·博施有限公司 | The tubular metal housing that spark plug, glow plug and transducer are used |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1167212A (en) | 1997-12-10 |
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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 |