Oblique insertion type conjoined grouped ignition coil

Abstract

An oblique insertion type conjoined grouped ignition coil comprises a strip-shaped shell and a shell cover installed at the top of the shell, a high-voltage positioning piece is installed in the shell, a pair of containing cavities with upward openings are formed in the upper surface of the high-voltage positioning piece, coil assemblies are installed in the containing cavities respectively, and integrated low-voltage assemblies are installed on the coil assemblies. Four high-pressure heads inclining forwards are formed at the bottom of the shell in a secondary injection molding mode, and the high-pressure heads are distributed in the length direction of the shell at intervals. The middle of the integrated low-voltage assembly protrudes upwards to form a low-voltage head, a plurality of positioning clamping hooks extending upwards are formed on the upper surface of the integrated low-voltage assembly, the middle of the shell cover is hollowed out to expose the low-voltage head, and the positioning clamping hooks are connected to the shell cover in a guiding mode. The high-pressure head on the ignition coil shell is subjected to a secondary injection molding process, so that the risks of falling, cracking, sealing failure, improper assembly and the like caused by interference assembly of the shell and the high head in a traditional process are avoided, and the space of an engine can be saved.

Description

Technical Field

[0001] This utility model relates to an ignition coil structure. Background Technology

[0002] In an automotive engine ignition system, the ignition coil is an actuator that provides ignition energy to ignite the air-fuel mixture in the engine cylinder. It is a special pulse booster based on the principle of electromagnetic induction, which switches a low voltage of 8-16V on and off at a set frequency to generate a voltage of 20-40KV on its secondary side, which then produces an electric spark through the spark plug. Utility model patent CN221632394U discloses a one-piece ignition coil, including a main shell, multiple upper cylindrical shells fixedly connected to the bottom of the main shell, ignition elements fixedly mounted at the bottom of each upper cylindrical shell, rubber sleeves fixedly connected to the side walls of each ignition element, cap-shaped rubber rings movably fitted onto the bottom of each side wall of each ignition element at the bottom of the rubber sleeves, and steel plates movably fitted onto the side walls of each ignition element at the top of the cap-shaped rubber rings. This utility model, by providing cap-shaped rubber rings and rubber sleeves, achieves a double sealing effect between the ignition element and the spark plug hole in the engine. The one-piece ignition coil is fixed to the engine housing by two screw assemblies, and a telescopic cylinder assembly can compress the metal bushings, causing the metal bushings to simultaneously pressurize the multiple cap-shaped rubber rings, thereby increasing the tightness of the cap-shaped rubber rings at the spark plug hole in the engine, thus further improving the sealing performance. However, this type of one-piece ignition coil, due to its output-end structure, occupies considerable space within the engine. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated ignition coil that saves engine space.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a slanted, integrated, grouped ignition coil, comprising a strip-shaped outer shell and an outer shell cover mounted on top of the outer shell. A high-voltage positioning plate is installed inside the outer shell, and a pair of upward-facing receiving cavities are formed on the upper surface of the high-voltage positioning plate. Each receiving cavity contains a coil assembly, and an integrated low-voltage assembly is mounted on the coil assembly. The bottom of the outer shell is formed with four forward-sloping high-voltage heads by secondary injection molding, and the high-voltage heads are spaced apart along the length of the outer shell. The middle of the integrated low-voltage assembly protrudes upward to form a low-voltage head, and several upward-extending positioning hooks are formed on the upper surface of the integrated low-voltage assembly. The middle of the outer shell cover is hollowed out to expose the low-voltage heads, and the positioning hooks are guided and connected to the outer shell cover.

[0005] As a further improvement, the integrated low-voltage assembly is equipped with a plug-in capacitor, which is connected between the positive terminal of the low-voltage head and ground.

[0006] As a further improvement, the coil assembly includes an I-type iron core, a primary frame disposed around the I-type iron core, and a secondary frame disposed around the primary frame. Primary windings are wound on the primary frame, and secondary windings are wound on the secondary frame.

[0007] As a further improvement, the integrated low-voltage assembly forms multiple iron core end face baffles facing downwards. When the integrated low-voltage assembly is installed above the coil assembly, the iron core end face baffles seal and fix the I-type iron core from both ends of the coil assembly and divide the receiving cavity. The integrated low-voltage assembly is provided with a potting hole corresponding to each independent receiving cavity on its top, and each receiving cavity is filled with epoxy resin through the potting hole.

[0008] As a further improvement, the secondary frame of the coil assembly forms multiple positioning posts facing upwards, and the positioning posts are connected to the integrated low-voltage assembly to achieve positioning of the secondary frame and the integrated low-voltage assembly in the length and height directions.

[0009] As a further improvement, the lower surface of the high-pressure positioning plate is integrally injection molded with multiple high-pressure connectors, which are spaced apart along the length of the high-pressure positioning plate.

[0010] As a further improvement, a high-pressure sleeve is installed below the high-pressure head, and a high-pressure spring is installed inside the high-pressure sleeve.

[0011] As a further improvement, a suppression resistor is provided inside the high-voltage head, with one end of the suppression resistor connected to the high-voltage connector and the other end connected to the high-voltage spring.

[0012] As a further improvement, the secondary frame is provided with a high-voltage insert, which is connected to the high-voltage connector.

[0013] As a further improvement, the housing is provided with a connecting bushing for secure mounting to the engine.

[0014] Thanks to the above technical solutions, the high-pressure head on the outer shell uses a secondary injection molding process, which avoids the risks of detachment, cracking, sealing failure, and improper assembly that occur with the interference fit between the outer shell and the high-pressure pin in traditional processes, and also saves space in the engine. Attached Figure Description

[0015] Appendix Figure 1This is a perspective view of the obliquely inserted integrated grouped ignition coil according to the present invention;

[0016] Appendix Figure 2 This is an exploded view of the obliquely inserted integrated grouped ignition coil according to the present invention. Detailed Implementation

[0017] In the following description, the terminology used in the specification will be briefly described, and embodiments will be described in detail. All terms used herein, including descriptive or technical terms, should be interpreted as having the meaning understood by one of ordinary skill in the art. However, these terms may have different meanings depending on the intent of one of ordinary skill in the art, precedent, or the emergence of new technologies.

[0018] Furthermore, some terms may be chosen by the applicant, and in such cases, the meaning of the chosen terms will be described in detail in the detailed description of the embodiments. Therefore, the terms used herein must be defined based on their meanings in conjunction with the description throughout the specification. Additionally, when a component “comprises” or “contains” an element, the component may also include other elements without excluding them, unless there is a specific description to the contrary. In the following description, terms such as “component” and “module” indicate a unit for performing at least one function or operation, wherein units and modules may be implemented as hardware or software or by combining hardware and software.

[0019] Embodiments will now be described more fully with reference to the accompanying drawings. However, embodiments may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this 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 structures are not described in detail, as they would obscure the embodiments with unnecessary detail, and throughout the specification, the same reference numerals in the drawings denote the same or similar elements.

[0020] Appendix Figure 1 A perspective view of the obliquely inserted integrated grouped ignition coil according to this utility model; attached. Figure 2 This is an exploded view of the obliquely inserted integrated grouped ignition coil according to the present invention. The obliquely inserted integrated grouped ignition coil in this embodiment includes a strip-shaped outer shell 1 and an outer shell cover 2 mounted on top of the outer shell 1. A connecting bushing 12 for fixed installation onto the engine is provided on the outer shell 1. The bottom of the outer shell 1 is formed by secondary injection molding to create four forward-sloping high-pressure heads 11. The high-pressure heads 11 are spaced apart along the length of the outer shell 1, avoiding the risks of detachment, cracking, sealing failure, and improper assembly associated with interference fits between the outer shell and the high-pressure heads in traditional processes.

[0021] A high-voltage positioning plate 3 is installed inside the outer casing 1. Made of plastic, the high-voltage positioning plate 3 acts as a filler, effectively isolating large pieces of epoxy resin, reducing internal stress in the epoxy resin, and preventing cracking that could lead to coil failure. The upper surface of the high-voltage positioning plate 3 has a pair of upward-facing receiving cavities 31, each housing a coil assembly 4. An integrated low-voltage assembly 5 is mounted on the coil assembly 4. The integrated low-voltage assembly 5 has an upward-protruding low-voltage head 51 in its center. Several upward-extending positioning hooks 52 are formed on the upper surface of the integrated low-voltage assembly 5. The center of the outer casing cover 2 is hollowed out to expose the low-voltage head 51. During assembly, the positioning hooks 52 guide and connect to the outer casing cover 2, preventing loosening or detachment.

[0022] The coil assembly 4 includes an I-type iron core 41, a primary frame 42 disposed around the I-type iron core 41, and a secondary frame 43 disposed around the primary frame 42. Primary windings are wound on the primary frame 42, and secondary windings are wound on the secondary frame 43.

[0023] The integrated low-voltage assembly 5 forms multiple core end face baffles 53 facing downwards. When the integrated low-voltage assembly 5 is installed above the coil assembly 4, the core end face baffles 53 seal and fix the I-type core 41 from both ends of the coil assembly 4 and separate the receiving cavity 31. The core end face baffles 53 provide X-axis positioning for the coil assembly 4, thereby isolating the I-type core 41 from the epoxy resin and preventing resin cracking. A potting hole 54 is provided on the top of the integrated low-voltage assembly 5 corresponding to each independent receiving cavity 31, and each receiving cavity 31 is filled with epoxy resin through the potting hole 54. A plug-in capacitor 6 is installed on the integrated low-voltage assembly 5, and the plug-in capacitor 6 is connected between the positive terminal of the low-voltage head 51 and ground.

[0024] The secondary frame 43 of the coil assembly 4 forms multiple positioning posts 431 facing upwards. The positioning posts 431 are connected to the integrated low-voltage assembly 5 to form positioning in the length and height directions between the secondary frame 43 and the integrated low-voltage assembly 5.

[0025] Multiple high-voltage connectors 7 are integrally injection molded onto the lower surface of the high-voltage positioning plate 3, and the high-voltage connectors 7 are spaced apart along the length of the high-voltage positioning plate 3. A high-voltage sheath 8 is installed below the high-voltage head 11, and a high-voltage spring 9 is installed inside the high-voltage sheath 8. A suppression resistor 10 is provided inside the high-voltage head 11, with one end of the suppression resistor 10 connected to the high-voltage connector 7 and the other end connected to the high-voltage spring 9. A high-voltage insert 432 is provided on the secondary frame 43, and the high-voltage insert 43 is connected to the high-voltage connector 7.

[0026] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for limiting purposes. The description of features or aspects within each embodiment should generally be considered applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope defined by the appended claims.

Claims

1. A type of obliquely inserted integrated grouped ignition coil, characterized in that: The device includes a strip-shaped outer shell (1) and an outer shell cover (2) installed on top of the outer shell (1). A high-voltage positioning plate (3) is installed inside the outer shell (1). A pair of upward-facing receiving cavities (31) are formed on the upper surface of the high-voltage positioning plate (3). A coil assembly (4) is installed in each of the receiving cavities (31). An integrated low-voltage assembly (5) is installed on the coil assembly (4). The bottom of the outer shell (1) is formed by secondary injection molding to form four forward-sloping high-voltage heads (11). The high-voltage heads (11) are spaced apart along the length of the outer shell (1). The middle part of the integrated low-voltage assembly (5) protrudes upward to form a low-voltage head (51). Several upward-extending positioning hooks (52) are formed on the upper surface of the integrated low-voltage assembly (5). The middle part of the outer shell cover (2) is hollowed out to expose the low-voltage head (51). The positioning hooks (52) are guided and connected to the outer shell cover (2).

2. The obliquely inserted integrated grouped ignition coil according to claim 1, characterized in that: The integrated low-voltage component (5) is equipped with a plug-in capacitor (6), which is connected between the positive terminal of the low-voltage head (51) and ground.

3. The obliquely inserted integrated grouped ignition coil according to claim 1, characterized in that: The coil assembly (4) includes an I-type iron core (41), a primary frame (42) disposed around the I-type iron core (41), and a secondary frame (43) disposed around the primary frame (42). Primary windings are wound on the primary frame (42), and secondary windings are wound on the secondary frame (43).

4. The obliquely inserted integrated grouped ignition coil according to claim 3, characterized in that: The integrated low-voltage assembly (5) forms multiple iron core end face baffles (53) facing downwards. When the integrated low-voltage assembly (5) is installed above the coil assembly (4), the iron core end face baffles (53) seal and fix the type I iron core (41) from both ends of the coil assembly (4) and separate the receiving cavity (31). The integrated low-voltage assembly (5) is provided with a potting hole (54) corresponding to each independent receiving cavity (31) on its upper side. Each receiving cavity (31) is filled with epoxy resin through the potting hole (54).

5. The obliquely inserted integrated grouped ignition coil according to claim 3, characterized in that: The secondary frame (43) of the coil assembly (4) forms multiple positioning posts (431) facing upwards. The positioning posts (431) are connected to the integrated low-voltage assembly (5) so that the secondary frame (43) and the integrated low-voltage assembly (5) are positioned in the length and height directions.

6. The obliquely inserted integrated grouped ignition coil according to claim 5, characterized in that: The lower surface of the high-pressure positioning plate (3) is integrally injection molded with multiple high-pressure connectors (7), which are spaced apart along the length of the high-pressure positioning plate (3).

7. The obliquely inserted integrated grouped ignition coil according to claim 6, characterized in that: A high-pressure sleeve (8) is installed below the high-pressure head (11), and a high-pressure spring (9) is installed inside the high-pressure sleeve (8).

8. The obliquely inserted integrated grouped ignition coil according to claim 7, characterized in that: The high-voltage head (11) is provided with a suppression resistor (10), and a high-voltage pin is injection molded inside the high-voltage head (11). One end of the suppression resistor (10) is connected to the high-voltage connector (7), and the other end is connected to the high-voltage spring (9) through the high-voltage pin.

9. The obliquely inserted integrated grouped ignition coil according to claim 8, characterized in that: The secondary frame (43) is provided with a high voltage plug (432), which is connected to the high voltage connector (7).

10. The obliquely inserted integrated grouped ignition coil according to claim 1, characterized in that: The outer casing (1) is provided with a connecting bushing (12) for fixed installation on the engine.

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