CN104895890A - Injection type self-tapping screw for spark plug cap - Google Patents
Injection type self-tapping screw for spark plug cap Download PDFInfo
- Publication number
- CN104895890A CN104895890A CN201510267899.8A CN201510267899A CN104895890A CN 104895890 A CN104895890 A CN 104895890A CN 201510267899 A CN201510267899 A CN 201510267899A CN 104895890 A CN104895890 A CN 104895890A
- Authority
- CN
- China
- Prior art keywords
- tapping screw
- spark plug
- plug cap
- head boss
- injection type
- 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.)
- Pending
Links
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 32
- 238000002347 injection Methods 0.000 title abstract description 6
- 239000007924 injection Substances 0.000 title abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
- H01T13/04—Means providing electrical connection to sparking plugs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- Spark Plugs (AREA)
Abstract
The invention discloses an injection type self-tapping screw for a spark plug cap. The upper end of a screw rod (1) and the bottom face of a head boss (2) are connected into a whole through a big-end-up transition segment (3), the peripheral side face of the head boss (2) is composed of a pair of arc surfaces (2a) and a pair of vertical surfaces (2b), the arc surfaces (2a) and the vertical surfaces (2b) are arranged at intervals in the circumferential direction, the two arc surfaces (2a) are located on the same circumference, the tangent line passing the arc tops of the arc surfaces (2a) is perpendicular to the vertical surfaces (2b), and a positioning column (4) is arranged above the head boss (2). According to the injection type self-tapping screw for the spark plug cap, the head boss is arranged to be of a similar-square structure, and relative rotation caused after the self-tapping screw is injected into a spark plug cap body can be effectively prevented, conductive performance can be guaranteed while wire harness connection is facilitated, the injection type self-tapping screw has the advantages of being reasonable in design, simple in structure, easy to machine and produce, low in production cost and the like, and the injection type self-tapping screw is applicable to conductive caps in various types.
Description
Technical field
The present invention relates to a kind of engine components, particularly a kind of pouring-in tapping screw for spark plug cap.
Background technique
Spark plug cap is the vitals on universal machine, for connecting high voltage wire and spark plug, and its quality, the directly startability of the logical machine of impact.Traditional spark plug cap is by body and be arranged on the compositions such as intrinsic conductive cap, resistance, spring, reed, tapping screw, and the tapping screw used is standard piece, adopts injection mode to be fixed in body.Head boss due to tapping screw is circular, and easily rotate at spark plug cap body contents, steadiness and the reliability of tapping screw are poor, can affect the connection of wire harness, thus reduce efficiency of assembling when assembling.
Summary of the invention
Because the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide a kind of pouring-in tapping screw of spark plug cap that effectively can prevent rotating.
Technical solution of the present invention is as follows: the pouring-in tapping screw of a kind of spark plug cap, comprise screw rod (1) and head boss (2), screw rod (1) is provided with screw thread, it is characterized in that: the upper end of described screw rod (1) is connected as a single entity by the bottom surface of up big and down small changeover portion (3) with head boss (2), all sides of described head boss (2) are made up of a pair arc surface (2a) and a pair vertical plane (2b), arc surface (2a) and vertical plane (2b) in the circumferential interval are arranged, two arc surfaces (2a) are circumferentially same, by the tangent line on arc surface (2a) arc top and described vertical plane (2b) perpendicular, in the top of described head boss (2), locating column (4) is set, the shaft axis of this locating column (4) and the shaft axis of described screw rod (1) are point-blank.
Adopt above technological scheme, by boring section transition between screw rod and head boss, structural strength is good, fracture not easily occurs or damages.All sides of head boss are made up of spaced arc surface and vertical plane, embed after in spark plug cap body, tapping screw can not rotate relative to spark plug cap body, the steadiness that such tapping screw is installed and good reliability, being conducive to wire harness when assembling is connected on tapping screw, ensure that efficiency of assembling.Locating column on head boss, for being socketed connecting sheet, makes connecting sheet and tapping screw install more convenient.
As preferably, described locating column (4) is short cylindrical.
In order to improve conductive effect, described tapping screw is made of copper.
In order to guarantee conductive effect while reducing costs, described tapping screw is fabricated from iron, and has conductive layer at the Surface coating of tapping screw.
Beneficial effect: head boss is set to folk prescription structure by the present invention, relatively rotate after effectively preventing tapping screw from injecting spark plug cap body, while facilitating wire harness to connect, electric conductivity can be guaranteed, there is the features such as reasonable in design, structure simple, be easy to processing, cost of production is low, all applicable on various types of conductive cap.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the plan view of Fig. 1.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
As shown in Figure 1 and Figure 2, the tapping screw of spark plug cap can be made of copper; Also can be fabricated from iron, have conductive layer at the Surface coating of tapping screw.Tapping screw comprises screw rod 1, changeover portion 3, head boss 2 and locating column 4 four part.Wherein, screw rod 1 is provided with screw thread, the lower end of this screw rod 1 is prong structure, and the upper end of screw rod 1 is connected as a single entity with the bottom surface of head boss 2 by up big and down small changeover portion 3.All sides of head boss 2 are made up of a pair arc surface 2a and a pair vertical plane 2b, and arc surface 2a and vertical plane 2b in the circumferential interval is arranged, two arc surface 2a circumferentially same, by the tangent line on arc surface 2a arc top and vertical plane 2b perpendicular.Above head boss 2, arrange locating column 4, this locating column 4 is short cylindrical, and the bottom of locating column 4 and the end face of head boss 2 are connected as a single entity, and the shaft axis of locating column 4 and the shaft axis of screw rod 1 are point-blank.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technician in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment.
Claims (4)
1. the pouring-in tapping screw of spark plug cap, comprise screw rod (1) and head boss (2), screw rod (1) is provided with screw thread, it is characterized in that: the upper end of described screw rod (1) is connected as a single entity by the bottom surface of up big and down small changeover portion (3) with head boss (2), all sides of described head boss (2) are made up of a pair arc surface (2a) and a pair vertical plane (2b), arc surface (2a) and vertical plane (2b) in the circumferential interval are arranged, two arc surfaces (2a) are circumferentially same, by the tangent line on arc surface (2a) arc top and described vertical plane (2b) perpendicular, in the top of described head boss (2), locating column (4) is set, the shaft axis of this locating column (4) and the shaft axis of described screw rod (1) are point-blank.
2. the pouring-in tapping screw of spark plug cap as claimed in claim 1, is characterized in that: described locating column (4) is short cylindrical.
3. the pouring-in tapping screw of spark plug cap as claimed in claim 1 or 2, is characterized in that: described tapping screw is made of copper.
4. the pouring-in tapping screw of spark plug cap as claimed in claim 1 or 2, is characterized in that: described tapping screw is fabricated from iron, has conductive layer at the Surface coating of tapping screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510267899.8A CN104895890A (en) | 2015-05-22 | 2015-05-22 | Injection type self-tapping screw for spark plug cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510267899.8A CN104895890A (en) | 2015-05-22 | 2015-05-22 | Injection type self-tapping screw for spark plug cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104895890A true CN104895890A (en) | 2015-09-09 |
Family
ID=54028768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510267899.8A Pending CN104895890A (en) | 2015-05-22 | 2015-05-22 | Injection type self-tapping screw for spark plug cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104895890A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004146126A (en) * | 2002-10-22 | 2004-05-20 | Ngk Spark Plug Co Ltd | Plug cap and manufacturing method of the same |
| CN2930030Y (en) * | 2006-05-26 | 2007-08-01 | 李从仁 | Sparking plug cap of general engine |
| WO2010095748A1 (en) * | 2009-02-23 | 2010-08-26 | 日本特殊陶業株式会社 | Plug cap and method for producing a plug cap |
| CN203161769U (en) * | 2013-02-26 | 2013-08-28 | 牛余训 | Anti-rotating bolt for connection of standard sections of tower crane |
| CN204716702U (en) * | 2015-05-22 | 2015-10-21 | 重庆从仁机电有限公司 | Pouring-in tapping screw structure |
-
2015
- 2015-05-22 CN CN201510267899.8A patent/CN104895890A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004146126A (en) * | 2002-10-22 | 2004-05-20 | Ngk Spark Plug Co Ltd | Plug cap and manufacturing method of the same |
| CN2930030Y (en) * | 2006-05-26 | 2007-08-01 | 李从仁 | Sparking plug cap of general engine |
| WO2010095748A1 (en) * | 2009-02-23 | 2010-08-26 | 日本特殊陶業株式会社 | Plug cap and method for producing a plug cap |
| CN203161769U (en) * | 2013-02-26 | 2013-08-28 | 牛余训 | Anti-rotating bolt for connection of standard sections of tower crane |
| CN204716702U (en) * | 2015-05-22 | 2015-10-21 | 重庆从仁机电有限公司 | Pouring-in tapping screw structure |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150909 |