Integrated ignition coil

Abstract

The utility model discloses an integrated ignition coil and belongs to the technical field of ignition coils. The supporting columns are arranged in the outer iron core and used for limiting the position of the inner iron core, the installation precision between the outer iron core and the inner iron core can be effectively improved, and therefore displacement of the inner iron core in the epoxy resin injection process is avoided, and non-uniformity of a coil magnetic field is avoided; the coil of the inner iron core is sleeved with the shielding sleeve, a magnetic field generated by the coil can be further limited effectively through the shielding cover, the magnetic field is limited within a small range, and the situation that the final ignition quality is affected due to the fact that every two adjacent ignition coils influence each other is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of ignition coil, concretely relates to an integrated ignition coil. BACKGROUND

[0002] The existing pen type ignition coil is inserted into the engine cylinder when it is installed on the automobile engine. The coil low voltage and high voltage generate magnetic field. The engine ignition receives various sensing signals through the automobile computer ECU, controls the ignition time and sequence, forms multiple magnetic fields and magnetic field conversion, electric field and magnetic field conversion environment around the engine, thereby affecting the confusion of the internal magnetic field of the ignition coil, is not conducive to the control of the ignition time and ignition energy, and finally affects the ignition quality and service life of the ignition coil. SUMMARY

[0003] The utility model mainly solves the technical problems of the prior art, and provides an integrated ignition coil.

[0004] The above technical problems of the utility model are mainly solved by the following technical scheme: an integrated ignition coil, including outer iron core and inner iron core, the inner iron core is located in the outer iron core, the outer circle surface of the inner iron core is equipped with the wire storage groove, two lead grooves are arranged between the wire storage groove and the top surface of the inner iron core, the coil is wound in the wire storage groove, the two end portions of the coil are arranged in the lead groove, the coil is externally sleeved with the shielding sleeve, the upper and lower ends of the shielding sleeve are clamped on the outer surface of the inner iron core on the upper and lower sides of the wire storage groove, a plurality of glue through holes are arranged on the shielding sleeve along the axial annular array, a plurality of support columns are arranged on the inner wall surface of the outer iron core on the upper and lower ends, a plurality of the support columns are arranged on the inner wall surface of the outer iron core along the axial annular array, the inner iron core is supported by the support column and arranged at the middle position of the outer iron core, a plurality of installation grooves are arranged on the outer wall surface of the outer iron core along the axial array, and a graphite strip is arranged in each installation groove.

[0005] Preferably, the bottom of the inner iron core is provided with a positioning pin column, and the positioning pin column is coaxial with the inner iron core.

[0006] Preferably, the bottom of the outer iron core is provided with a positioning hole matched with the positioning pin column.

[0007] Preferably, the inner iron core is fixed in the outer iron core through the positioning pin column.

[0008] Preferably, the cavity part between the outer iron core and the inner iron core is injected with epoxy resin.

[0009] The beneficial effects of this utility model are as follows: by setting a support column inside the outer iron core to limit the position of the inner iron core, the installation accuracy between the two can be effectively improved, thereby avoiding displacement of the inner iron core during the injection of epoxy resin, and thus avoiding unevenness of the coil magnetic field.

[0010] By installing a shielding sleeve over the inner iron core coil, the magnetic field generated by the coil can be effectively limited to a smaller range, thus preventing two adjacent ignition coils from interfering with each other and affecting the final ignition quality. Attached Figure Description

[0011] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0012] Fig. 2 This is a schematic diagram of the structure of the inner iron core and shielding sleeve of this utility model;

[0013] Fig. 3 This is a schematic diagram of the structure of the outer iron core of this utility model.

[0014] In the diagram: 1. Outer iron core; 2. Inner iron core; 3. Wire storage groove; 4. Lead wire groove; 5. Coil; 6. Shielding sleeve; 7. Adhesive penetration hole; 8. Support column; 9. Mounting groove; 10. Graphite strip; 11. Positioning pin; 12. Positioning hole; 13. Epoxy resin. Detailed Implementation

[0015] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0016] Example: An integrated ignition coil, such as Figs. 1-3 As shown, the device includes an outer iron core 1 and an inner iron core 2. The inner iron core 2 is located inside the outer iron core 1. A wire storage groove 3 is provided on the outer ring surface of the inner iron core 2. Two lead wire grooves 4 are provided between the wire storage groove 3 and the top surface of the inner iron core 2. A coil 5 is wound in the wire storage groove 3. The two ends of the coil 5 are placed in the lead wire grooves 4. A shielding sleeve 6 is provided on the outside of the coil 5. The upper and lower ends of the shielding sleeve 6 are engaged with the outer surfaces of the inner iron core 2 on the upper and lower sides of the wire storage groove 3. Multiple adhesive-permeable holes 7 are arranged in a ring along the axis on the shielding sleeve 6. Multiple support pillars 8 are provided at both the upper and lower ends of the inner wall of the outer iron core 1. The multiple support pillars 8 are arranged in a ring along the axis on the inner wall of the outer iron core 1. The inner iron core 2 is supported by the support pillars 8 and located in the middle position of the outer iron core 1. Multiple mounting grooves 9 are arranged in a ring along the axis on the outer wall of the outer iron core 1. Each mounting groove 9 is provided with a graphite strip 10. The graphite strip 10 can further restrict the magnetic field.

[0017] The bottom of the inner iron core 2 is provided with a positioning pin column 11 coaxially arranged with the inner iron core 2; the bottom of the outer iron core 1 is provided with a positioning hole 12 matched with the positioning pin column 11; the inner iron core 2 is fixed in the outer iron core 1 through the positioning pin column 11; and the cavity part between the outer iron core 1 and the inner iron core 2 is injected with epoxy resin 13.

[0018] Finally, it should be pointed out that the above embodiments are only representative examples of the present application. Obviously, the present application is not limited to the above embodiments, and there can be many variations. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments shall be considered to fall within the protection scope of the present application.

Claims

1. An integrated ignition coil, comprising an outer iron core (1) and an inner iron core (2), characterized in that: The inner iron core (2) is located inside the outer iron core (1). A wire storage groove (3) is provided on the outer ring surface of the inner iron core (2). Two lead wire grooves (4) are provided between the wire storage groove (3) and the top surface of the inner iron core (2). A coil (5) is wound in the wire storage groove (3). The two ends of the coil (5) are placed in the lead wire grooves (4). A shielding sleeve (6) is provided on the outside of the coil (5). The upper and lower ends of the shielding sleeve (6) are engaged with the outer surfaces of the inner iron core (2) on the upper and lower sides of the wire storage groove (3). The shielding sleeve (6) has multiple through-holes (7) arranged in a ring along the axis. The upper and lower ends of the inner wall of the outer iron core (1) are provided with multiple support columns (8). The multiple support columns (8) are arranged in a ring along the axis on the inner wall of the outer iron core (1). The inner iron core (2) is supported by the support columns (8) and is located in the middle position of the outer iron core (1). The outer wall of the outer iron core (1) has multiple mounting grooves (9) arranged in a ring along the axis. Each mounting groove (9) is provided with a graphite strip (10).

2. The integrated ignition coil (5) according to claim 1, characterized in that: The bottom of the inner iron core (2) is provided with a positioning pin (11), which is coaxial with the inner iron core (2).

3. The integrated ignition coil (5) according to claim 2, characterized in that: The bottom of the outer iron core (1) is provided with a positioning hole (12) that cooperates with the positioning pin (11).

4. The integrated ignition coil (5) according to claim 3, characterized in that: The inner iron core (2) is fixed in the outer iron core (1) by a positioning pin (11).

5. The integrated ignition coil (5) according to claim 1, characterized in that: The cavity between the outer core (1) and the inner core (2) is injected with epoxy resin (13).

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