Double-high-voltage output combined ignition coil

Abstract

A double-high-voltage output combined type ignition coil comprises a shell and a shell cover installed at the top of the shell, the top of the shell obliquely extends backwards to form a low-voltage head, the bottom of the shell obliquely extends forwards to form a pair of high-voltage heads, the shell is provided with a containing cavity with an upward opening, and the high-voltage heads are arranged in the containing cavity. A pair of coil assemblies, a mold frame, an ignition module and filling epoxy resin are installed in the containing cavity, the coil assemblies are perpendicular to each other and fixed to the lower portion of the mold frame in a spaced mode, and the ignition module is fixed to the upper portion of the mold frame. The mold frame designed in the product is placed at the upper end of the coil assembly, the bottom outline of the mold frame is designed according to the trend of the internal structure of the coil, resin around primary and secondary windings is evenly distributed, in addition, the mold frame can isolate the module and the iron core assembly, and the influence of induced voltage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of ignition coil structure. BACKGROUND

[0002] In automobile engine ignition system, ignition coil is a kind of executive component for providing ignition energy for igniting the air and fuel mixture in engine cylinder. It is a kind of special pulse booster based on electromagnetic induction principle, which makes 8-16V low voltage to secondary generation 20-40KV voltage through spark plug to produce electric spark according to set frequency on-off. The utility model patent with application No. 201611098465.0 discloses a combined single cylinder independent ignition coil, comprising a shell, a plurality of first cavities are arranged in the shell along the length direction, each first cavity is spaced from each other by first wall body, and each first cavity is provided with a coil assembly; the second cavity is arranged in the shell along the width direction, the second cavity is located at one end of the first cavity, a plurality of low-voltage cards are arranged between the first cavity and the second cavity, each low-voltage card is connected with a coil assembly, the circuit module is arranged in the second cavity, and the circuit module is electrically connected with the low-voltage card; a plurality of third cavities are arranged at the other end of the first cavity along the height direction, and the third cavity is provided with a negative high-voltage connector, and each negative high-voltage connector is connected with a coil assembly. However, the ignition coil with the above structure has the disadvantages of unstable coil assembly fixation, epoxy resin cracking caused by uneven epoxy resin filling and short service life of ignition coil. SUMMARY

[0003] In order to solve the shortcomings of the prior art, the utility model aims at providing a double high-voltage output combined ignition coil with stable structure and reliable performance.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of a double high-voltage output combined ignition coil, which comprises an outer shell and an outer shell cover installed on the top of the outer shell, the top of the outer shell is inclined to extend rearward to form a low-voltage head, the bottom of the outer shell is inclined to extend forward to form a pair of high-voltage heads, the outer shell has a receiving cavity with an opening facing upward, a pair of coil assemblies, a mold frame, an ignition module and epoxy resin are installed in the receiving cavity, the pair of coil assemblies are fixed below the mold frame perpendicular to each other and spaced apart, and the ignition module is fixed above the mold frame.

[0005] As a further improvement, the mold frame has a plurality of ribs inside, and the ignition module is installed on the ribs.

[0006] As a further improvement, the mold frame extends downward to form a plurality of partition blocks, which extend into the receiving cavity to make the epoxy resin around the coil assembly evenly distributed.

[0007] As a further improvement, the coil assembly comprises an I-shaped core, a primary skeleton arranged on the periphery of the I-shaped core, a secondary skeleton arranged on the periphery of the primary winding, and a C-shaped core arranged outside the secondary skeleton, the primary winding being wound on the primary skeleton, and the secondary winding being wound on the secondary skeleton.

[0008] As a further improvement, the two ends of the C-shaped core are correspondingly connected to the two ends of the I-shaped core, and a magnetic sheet is arranged between the connecting surfaces.

[0009] As a further improvement, the end of the primary skeleton is provided with a lock, and the end of the secondary skeleton is provided with a slot, when the two ends of the C-shaped core are inserted into the slot and connected to the two ends of the I-shaped core, the lock is connected to the slot.

[0010] As a further improvement, the high-voltage head is provided with a first high-voltage pin, a suppression resistor and a second high-voltage pin, a high-voltage sheath is mounted below the high-voltage head, a high-voltage spring is mounted in the high-voltage sheath, the second high-voltage pin is arranged at the upper end of the high-voltage spring, and one end of the suppression resistor is connected to the first high-voltage pin and the other end is connected to the second high-voltage pin.

[0011] As a further improvement, the secondary skeleton is provided with a high-voltage terminal, and the negative high-voltage end of the secondary winding is connected to the first high-voltage pin through the high-voltage terminal.

[0012] As a further improvement, grooves are arranged on the side walls of the mounting holes of the first high-voltage pin and the second high-voltage pin.

[0013] As a further improvement, the secondary skeleton is provided with a high-voltage diode, and the positive high-voltage end of the secondary winding is connected to the ignition module through the high-voltage diode.

[0014] Due to the above technical scheme, the mold frame is placed on the upper end of the coil assembly, the bottom profile of the mold frame is designed according to the trend of the internal structure of the coil, the resin around the primary and secondary windings is evenly distributed, and in addition, the mold frame can isolate the module from the core assembly to avoid the influence of induced voltage. BRIEF DESCRIPTION OF DRAWINGS

[0015] ATTACHMENT Figure 1 is an exploded view of the double high-voltage output combined ignition coil according to the present application;

[0016] ATTACHMENT Figure 2The exploded view of the coil assembly of the double high-voltage output combined ignition coil according to the utility model;

[0017] The exploded view of the coil assembly of the double high-voltage output combined ignition coil according to the utility model; Figure 3 The exploded view of the coil assembly of the double high-voltage output combined ignition coil according to the utility model;

[0018] The exploded view of the coil assembly of the double high-voltage output combined ignition coil according to the utility model; Figure 4 The exploded view of the coil assembly of the double high-voltage output combined ignition coil according to the utility model. DETAILED DESCRIPTION

[0019] Hereinafter, the terms used in the specification will be briefly described, and the embodiments will be described in detail. All terms used herein, including descriptive terms or technical terms, should be interpreted to have the meanings understood by those of ordinary skill in the art. However, these terms can have different meanings according to the intention of those of ordinary skill in the art, precedents, or the emergence of new technology.

[0020] In addition, some terms can be selected by the applicant, and in this case, the meaning of the selected term will be described in detail in the detailed description of the embodiments. Therefore, the terms used herein must be defined based on the meaning of the terms along with the description in the entire specification. In addition, when a component "includes" or "comprises" an element, unless there is a specific description contrary thereto, the component can further include other elements, not excluding the other elements. In the following description, terms such as "component" and "module" indicate a unit for processing at least one function or operation, wherein the unit and module can be implemented as hardware or software or by combining hardware and software.

[0021] Embodiments will now be described more fully with reference to the accompanying drawings. Embodiments, however, can be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the disclosure will be thorough and complete, and will fully convey the concept of the embodiments to those skilled in the art. In the following description, well-known functions or constructions are not described in detail because they would obscure the embodiments with unnecessary detail and, throughout the specification, like reference numerals refer to like elements throughout.

[0022] The exploded view of the coil assembly of the double high-voltage output combined ignition coil according to the utility model; Figure 1The double high-voltage output combined ignition coil according to the utility model discloses has the advantages of simple structure, convenient use, high efficiency, high reliability, high safety, high stability, high performance, high energy saving, low cost, long service life, etc.

[0023] The utility model discloses a double high-voltage output combined ignition coil and a coil assembly thereof. Figure 2 The utility model discloses a double high-voltage output combined ignition coil and a coil assembly thereof.

[0024] The two ends of the C-shaped iron core 34 are connected to the two ends of the I-shaped iron core 31, and a magnetic sheet 35 is arranged between the connecting surfaces.

[0025] The high-voltage head 11 is provided with a first high-voltage pin 61, a suppression resistor 9 and a second high-voltage pin 62.

[0026] The secondary skeleton 33 is provided with a high-voltage terminal 331, and the negative high-voltage end of the secondary winding is connected to the first high-voltage pin 61 through the high-voltage terminal 331.

[0027] Figure 2 is a perspective view of a double high-voltage output combined ignition coil according to the present application; Figure 3 The inside of the mold frame 4 has a plurality of ribs 41, and the ignition module 5 is installed on the ribs 41. The mold frame 4 extends downward to form a plurality of partition blocks 42, and the partition blocks 42 extend into the receiving cavity 13 to make the epoxy resin around the coil assembly 3 evenly distributed. The mold frame designed inside the product is placed on the upper end of the coil assembly, and the bottom contour of the mold frame is designed according to the trend of the internal structure of the coil, so that the resin around the primary and secondary windings is evenly distributed. In addition, the mold frame can isolate the module and the core assembly, and avoid the influence of induced voltage.

[0028] Figure 3 is a perspective view of a double high-voltage output combined ignition coil according to the present application; Figure 4 Figure 4 is a perspective view of a second high-voltage pin of a double high-voltage output combined ignition coil according to the present application. The side wall of the mounting hole of the first high-voltage pin 61 and the second high-voltage pin 62 is provided with grooves at intervals. The built-in structure of the resistor can effectively avoid the fire phenomenon during use after the resin is cured, and the high-voltage pin is connected at both ends of the resistor. The high-voltage pin matching surface is designed as a groove structure, which can meet the matching requirements and also reduce the extrusion on the resistor.

[0029] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each embodiment should typically be considered as being applicable to other similar features or aspects in other embodiments. While one or more embodiments have been described with reference to the figures, it will be understood by those of ordinary skill in the art that various changes in form and details can be made therein without departing from the spirit and scope as defined by the following claims.

Claims

1. A dual high-voltage output combined ignition coil, characterized in that: Includes a housing (1) and a housing cover (2) mounted on top of the housing (1). The top of the housing (1) extends backward at an angle to form a low-pressure head (11), and the bottom of the housing (1) extends forward at an angle to form a pair of high-pressure heads (12). The housing (1) has an upward-opening receiving cavity (13). A pair of coil assemblies (3), a mold frame (4), an ignition module (5), and epoxy resin filling are installed in the receiving cavity (13). The pair of coil assemblies (3) are fixed below the mold frame (4) perpendicular to each other and spaced apart. The ignition module (5) is fixed above the mold frame (4).

2. The dual high-voltage output combined ignition coil according to claim 1, characterized in that: The mold frame (4) has multiple ribs (41) inside, and the ignition module (5) is installed on the ribs (41).

3. The dual high-voltage output combined ignition coil according to claim 1, characterized in that: The mold frame (4) extends downward to form a plurality of partition blocks (42), which extend into the receiving cavity (13) to make the epoxy resin around the coil assembly (3) evenly distributed.

4. The dual high-voltage output combined ignition coil according to claim 1, characterized in that: The coil assembly (3) includes an I-type iron core (31), a primary frame (32) disposed around the I-type iron core (31), a secondary frame (33) disposed around the primary frame (32), and a C-type iron core (34) disposed outside the secondary frame (33). Primary windings are wound on the primary frame (32), and secondary windings are wound on the secondary frame (33).

5. The dual high-voltage output combined ignition coil according to claim 4, characterized in that: The two ends of the C-type iron core (34) are connected to the two ends of the I-type iron core (31), and magnetic sheets (35) are provided between the connecting surfaces.

6. The dual high-voltage output combined ignition coil according to claim 5, characterized in that: The primary skeleton (32) is provided with a latch (36) at its end, and the secondary skeleton (33) is provided with a slot (37) at its end. When the two ends of the C-type iron core (34) are inserted into the slot (37) and connected to the two ends of the I-type iron core (31), the latch (36) is connected to the slot (37).

7. The dual high-voltage output combined ignition coil according to claim 6, characterized in that: The high-voltage head (12) is provided with a first high-voltage pin (61), a suppression resistor (9), and a second high-voltage pin (62). A high-voltage sleeve (7) is installed below the high-voltage head (12). A high-voltage spring (8) is installed inside the high-voltage sleeve (7). The second high-voltage pin (62) is located at the upper end of the high-voltage spring (8). One end of the suppression resistor (10) is connected to the first high-voltage pin (61), and the other end is connected to the second high-voltage pin (62).

8. The dual high-voltage output combined ignition coil according to claim 7, characterized in that: The secondary frame (33) is provided with a high voltage terminal (331), and the negative high voltage end of the secondary winding is connected to the first high voltage pin (61) through the high voltage terminal (331).

9. The dual high-voltage output combined ignition coil according to claim 8, characterized in that: The mounting holes of the first high-pressure pin (61) and the second high-pressure pin (62) are provided with grooves at intervals on the side walls.

10. The dual high-voltage output combined ignition coil according to claim 7, characterized in that: A high-voltage diode (332) is provided on the secondary frame (33), and the positive high-voltage end of the secondary winding is connected to the ignition module (5) through the high-voltage diode (332).

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