CN201092926Y

CN201092926Y - Ignition coil

Info

Publication number: CN201092926Y
Application number: CNU2007201441543U
Authority: CN
Inventors: 彭启立; 刘晖
Original assignee: United Automotive Electronic Systems Co Ltd
Current assignee: United Automotive Electronic Systems Co Ltd
Priority date: 2007-08-21
Filing date: 2007-08-21
Publication date: 2008-07-30
Anticipated expiration: 2017-08-21

Abstract

The utility model discloses an ignition coil which comprises a shell and a primary plug, wherein the primary plug is detachably fixed on the shell, the shell comprises a primary iron core, the primary plug comprises at least one earth terminal, the primary iron core comprises at least one earthing hole when the primary plug is fixed on the shell, the earth terminal is inserted into the earthing hole, and the earth terminal is contacted with the earthing hole. High pressure which is sensed by the primary iron core is derived through the earthing hole, the earth terminal and a circuit on the primary plug to realize safety ground, and simultaneously since the ignition coil does not use an engine cylinder head cover to connect earth, thereby the ignition coil can be used in nonmetal cylinder head covers, which extends the using range.

Description

Spark coil

Technical field

The utility model relates to a kind of ignition mechanism of Motor Vehicle, relates in particular to a kind of spark coil.

Background technique

At present, known inductively igniting coil induces high pressure by the electric current of control primary air at the secondary winding place, and the gas mixture that punctures between spark plug makes engine operation., there is capacity effect in spark coil when work between secondary iron core and the secondary winding, and secondary iron core is high magnetic conduction conductor, therefore also can induce the adventurous high voltage of human body at the secondary in a flash iron core place that high pressure appears in secondary winding.But, the ground connection that the mode that a lot of spark coils only contacts with the metal cylinder cover of engine by installation metal bolts and metal bolts realizes secondary iron core, this kind grounding scheme can only be used for using on the metal cylinder cover of engine.

The model utility content

Technical problem to be solved in the utility model provides a kind of spark coil, and this spark coil not only can safety grounding, and can satisfy the requirement of nonmetallic engine cylinder cover cap, for example can be installed on the plastics cylinder cover cap and use safely.

For solving the problems of the technologies described above, the utility model spark coil comprises housing and elementary plug, and described elementary plug removably is fixed on the housing, and described housing comprises secondary iron core, and described elementary plug comprises at least one ground terminal; Described secondary iron core comprises at least one ground hole; When elementary plug was fixed in housing, described ground terminal was inserted in the ground hole, and ground terminal and ground hole contact with each other.

The high pressure that the utility model spark coil can induce secondary iron core is derived to realize safety grounding by the circuit of ground hole, ground terminal and elementary plug, has therefore improved and has keeped in repair the electrical safety performance that waits in the operation.Owing to do not use cylinder cover of engine ground connection, also enlarge the application area of the utility model spark coil simultaneously, made the utility model can be used for metal and nonmetal cylinder head cover, for example plastic cylinder cover.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described in further detail:

Fig. 1 is the embodiment's one of the utility model spark coil a structural representation;

Fig. 2 is the schematic representation of secondary each embodiment of iron core in the utility model.

Reference character is among the figure: the 10-housing; 11-level iron core; The 111-ground hole; The 112-fixed hole; The elementary plug of 20-; The 21-electrical end; The 22-ground terminal.

Embodiment

See also Fig. 1, this is an embodiment of the utility model spark coil.The utility model spark coil comprises housing 10 and elementary plug 20, and elementary plug 20 removably is fixed on the housing 10.Housing 10 comprises secondary iron core 11 again, and secondary iron core 11 is packaged in the housing 10 whole or in part.Comprise a ground hole 111 on the secondary iron core 11, elementary plug 20 comprises a ground terminal 22, and when elementary plug 20 was fixed in housing 10, ground terminal 22 was inserted in the ground hole 111, and ground terminal 22 contacts with each other with ground hole 111.By said structure, the high pressure that secondary iron core induces will be derived with the circuit on the elementary plug 20 via ground hole 111, ground terminal 22 and be realized safety grounding.

See also Fig. 2, this is each embodiment of the secondary iron core in the utility model.What Fig. 2 (a) showed is the secondary iron core 11 that does not have fixed hole, and what Fig. 2 (b) showed is the secondary iron core 11 that comprises a fixed hole 112, and what Fig. 2 (c) showed is the secondary iron core 11 that comprises two fixed holes 112.Fixed hole is used for installing or the fixed ignition coil, and the difference of its quantity and position can be used for installing flexibly or the fixed ignition coil.

In the elementary plug of existing spark coil some electrical ends are arranged usually, the external line interface of promptly elementary plug, the ground terminal in the utility model can be connected to the one or more of existing electrical end.Elementary plug 20 as shown in Figure 1 has 3 electrical ends 21, and ground terminal 22 just is connected to one of them electrical end 21.Ground terminal 22 shown in Figure 1 is to be fixed on the elementary plug 20 with electrical end 21 one-body moldedly, and ground terminal 22 also can be to be detachably connected on the electrical end 21.

Above-mentioned each position, assembly only are example, and real protection scope of the present utility model should be as the criterion with claims.

Claims

1. spark coil, this spark coil comprises housing and elementary plug, and described elementary plug removably is fixed on the housing, and described housing comprises secondary iron core, it is characterized in that: described elementary plug comprises at least one ground terminal; Described secondary iron core comprises at least one ground hole; When elementary plug was fixed in housing, described ground terminal was inserted in the ground hole, and ground terminal and ground hole contact with each other.

2. spark coil according to claim 1 is characterized in that: described secondary iron core comprises that also at least one is used to install or the hole of fixed ignition coil.

3. spark coil according to claim 1, its elementary plug comprises some electrical ends, it is characterized in that: described ground terminal is detachably connected to electrical end.

4. spark coil according to claim 1, its elementary plug comprises some electrical ends, it is characterized in that: described ground terminal and electrical end are fixed in elementary plug one-body moldedly.