CN210516435U

CN210516435U - Pen type ignition coil high-voltage end structure

Info

Publication number: CN210516435U
Application number: CN201921762005.2U
Authority: CN
Inventors: 杨帆
Original assignee: Zhejiang Wodell Technology Co ltd
Current assignee: Zhejiang Woder Technology Group Co.,Ltd.
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-05-12
Anticipated expiration: 2029-10-21

Abstract

The utility model relates to a pen type ignition coil's structure especially relates to a connection structure of pen type ignition coil's high-pressure end. The utility model provides a pen-type ignition coil high-voltage end structure, includes the shell, installs secondary skeleton in the shell, and the last solderless wrapped connection of secondary skeleton has secondary coil, and in secondary skeleton downwardly extending to the cavity of shell below, the extension section solderless wrapped connection of secondary skeleton had resistance coil, and resistance coil's end meets through connection structure and the spring in the high-pressure extension pole. The utility model provides a high-voltage end structure of a pen-type ignition coil, which has simple structure, less assembly processes, low cost, firm connection and good conduction effect; the technical problems that in the prior art, the connecting structure of the high-voltage end of the pen type ignition coil has more spare and accessory parts, a complex structure, more assembling process steps and an unstable contact effect are solved.

Description

Pen type ignition coil high-voltage end structure

Technical Field

The utility model relates to a pen type ignition coil's structure especially relates to a connection structure of pen type ignition coil's high-pressure end.

Background

With the development of gasoline engines for automobiles toward high rotation speed, high compression ratio, high power, low oil consumption and low emission, the conventional ignition device is not suitable for the use requirements. The core components of the ignition device are an ignition coil and a switching device, the energy of the ignition coil is increased, and a spark plug can generate a spark with enough energy, which is the basic condition for adapting the ignition device to the operation of a modern engine. A typical ignition coil has two sets of coils, a primary coil and a secondary coil, inside it. In an automotive engine ignition system, an ignition coil is an actuator that provides ignition energy for igniting an air and fuel mixture within an engine cylinder. The special pulse booster based on the electromagnetic induction principle is characterized in that 8-16V low voltage is switched on and off according to a set frequency, so that 20-40KV voltage is generated on the secondary side of the booster, and electric sparks are generated through a spark plug.

The existing connection structure of the high-voltage end of the pen type coil is generally that a secondary winding is welded at one end of a ceramic resistor, the other end of the ceramic resistor is in contact with a metal cap, and then the other metal cap is in contact with the outside through a cylindrical suppression resistor, so that the number of parts is too large, and the assembly process is complex. As in the Chinese patent: "an ignition coil structure (CN 102654095A)", includes the casing and is located the high-pressure side of casing bottom, the top of high-pressure side be provided with first high-pressure connector, restrain resistance, second high-pressure connector, the below of high-pressure side be provided with high-pressure spring, high-pressure sheath, first high-pressure connector one end be connected with secondary coil's output, the other end links to each other with restrain resistance, second high-pressure connector one end with restrain resistance link to each other, the other end support press in high-pressure spring's top, high-pressure sheath install in high-pressure spring's below.

Disclosure of Invention

The utility model provides a high-voltage end structure of a pen-type ignition coil, which has simple structure, less assembly processes, low cost, firm connection and good conduction effect; the technical problems that in the prior art, the connecting structure of the high-voltage end of the pen type ignition coil has more spare and accessory parts, a complex structure, more assembling process steps and an unstable contact effect are solved.

The above technical problem of the present invention is solved by the following technical solutions: the utility model provides a pen-type ignition coil high-voltage end structure, includes the shell, installs secondary skeleton in the shell, and the last solderless wrapped connection of secondary skeleton has secondary coil, and in secondary skeleton downwardly extending to the cavity of shell below, the extension section solderless wrapped connection of secondary skeleton had resistance coil, and resistance coil's end meets through connection structure and the spring in the high-pressure extension pole. The primary coil and the secondary coil are installed in the shell, the lower end of the secondary coil directly extends downwards to form a section, the resistance coil is wound on the section, the effect of inhibiting the wire resistance is achieved, the tail end of the winding is welded to the connecting structure through laser welding, and the connecting structure is connected with the spring in the high-voltage connecting rod to finish the conduction of ignition energy and voltage. The complex resistor components and various connectors in the original structure are omitted. The structure is simpler, after the secondary framework is formed at one time, coils are directly wound at the tail end, the process is simple, and the cost is low.

Preferably, the connecting structure comprises a connecting piece and a connecting cap which are connected with each other, the connecting piece is connected with the extending section of the secondary framework, and the connecting cap is connected with the spring. The connection structure only requires two components to conduct the ignition energy and the voltage. The connecting piece is formed by stamping, and has simple structure and simple and reliable manufacture. The connecting cap is a copper cap, the connecting cap is directly embedded on the shell when the shell is molded by injection, the installation is simple, and the copper cap can enable the energy of the connecting sheet to be transmitted better. The connecting sheet conducts the power supply and energy of the secondary winding wire to the copper cap, and then is connected with the spark plug through the spring.

Preferably, the connecting structure comprises a connecting sheet, one end of the connecting sheet is provided with an annular clamping surface, the surface of the annular clamping surface is provided with a barb, the annular clamping surface is inserted into the extending section of the secondary framework, the side surface of the connecting sheet is provided with a connecting column, and the tail end of the resistance coil is fixed on the connecting column. The connection piece is the sheetmetal, and secondary skeleton is the working of plastics, passes through the barb in the upper end of connection piece, pegs graft the connection piece in the through-hole in secondary skeleton's extension section, guarantees to connect and stabilizes difficult the deviating from, and resistance coil's end can twine on the spliced pole of connection piece side, adopts the laser welding form to connect, guarantees the stability of connecting.

Preferably, the connection structure further comprises a connection cap which is a metal cap and comprises an annular connection edge fixed on the shell, the connection cap further comprises a sunken cavity, and a spring is sleeved outside the cavity. The sunken cavity of connecting cap comprises the cylinder of a plurality of different diameters, has the inclined plane of a direction in the cavity, conveniently inserts the bottom of cavity with the connection piece, guarantees with the stable contact of connecting cap.

Preferably, one end of the connecting piece, which is connected with the connecting cap, is provided with an elastic opening, the elastic opening end of the connecting piece is inserted into the cavity, and the outer surface of the connecting piece is connected with the inner wall of the cavity of the connecting cap. The elastic bayonet gives the tail end of the connecting piece an outward supporting force, and ensures that the outer surface of the connecting piece is always in contact with the inner wall of the connecting cap, so that a good contact effect is ensured, and the conduction of ignition energy and voltage is completed.

Preferably, the diameter of the extension section of the secondary framework is smaller than that of the secondary framework, a through hole is formed in the center of the extension section of the secondary framework, and a connecting piece of the connecting structure is installed in the through hole.

Therefore, the utility model discloses a device of pen-type ignition coil high-voltage end structure possesses following advantage: the suppression resistor is formed by winding, so that the high-voltage end of the secondary winding can be wound on the framework again to achieve the effect of suppressing the resistor, the tail end of the secondary winding is welded to a novel contact piece through laser welding, and the contact piece is contacted with the copper cap through an elastic structure to finish the conduction of ignition energy and voltage; the assembly process is simple and easy to operate, and the contact effect is stable and reliable; the contact piece is firmly clamped with the plastic framework, the laser welding stability is strong, and the assembly with the copper cap is simple and convenient and has good effect.

Drawings

Fig. 1 is a front view of the high-voltage end structure of the pen-type ignition coil of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is an enlarged view at B of fig. 2.

Fig. 4 is a front view of the connection of the secondary coil, the connecting piece and the copper cap.

Fig. 5 is a front view of the connecting piece.

Fig. 6 is a front view of the copper cap.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b):

as shown in fig. 1, 2 and 3, the high-voltage end structure of the pen-type ignition coil comprises an injection-molded shell 1, a primary framework 4 is installed in the shell 1, and a primary coil 3 is wound on the primary framework 4. A secondary bobbin 6 is mounted inside the primary bobbin 4, and a secondary coil 5 is wound around the secondary bobbin. The high-pressure connecting rod 2 is connected to the lower portion of the shell 1, and the high-pressure connecting rod 2 is made of rubber materials.

As shown in fig. 4, a cavity 12 is arranged at the junction of the housing 1 and the high-voltage connection rod 2, the secondary framework 6 extends into the cavity 12, the extension section 7 of the secondary framework has a smaller diameter than the secondary framework 6, and the resistance coil 8 is wound on the outer surface of the extension section 7 of the secondary framework. One end of the resistance coil 8 is welded on the connecting column on the side surface of the connecting sheet 9 through laser welding. The upper end of the connecting piece 9 is connected with the secondary framework, the lower end of the connecting piece 9 is connected with the copper cap 10, and the copper cap 10 is connected with the compression spring 11 in the high-pressure connecting rod 2 to finish the conduction of ignition energy and voltage.

As shown in fig. 5, a through hole 20 is formed in the center of the extension section 7 of the secondary frame, a connecting piece 9 is mounted in the through hole 20, the connecting piece 9 is a metal sheet, and the connecting piece 9 is formed by punching. Barbs 13 are formed at the upper end of the connecting piece 9, and when the upper end of the connecting piece 9 is inserted into the through hole 20, the barbs 13 are used to firmly connect the connecting piece with the extension 7 of the secondary skeleton. A connecting column 14 is integrally formed on the side surface of the connecting sheet 9, and the connecting column 14 is used for welding the end part of the resistance coil 8. The lower end of the connecting piece is provided with an elastic opening 15, and when the connecting piece is inserted into the copper cap, the lower end of the connecting piece is always connected with the copper cap 10 due to the elasticity of the elastic opening, so that the connection stability is ensured.

As shown in fig. 6, the copper cap 10 includes a ring-shaped connecting edge 16, and the copper cap is directly embedded in the outer shell 1 through the connecting edge 16 when the outer shell is formed. The copper cap also comprises a sunken cavity 17, the connecting sheet is inserted in the cavity, and the connecting sheet is connected with the inner wall of the cavity to ensure stable conduction. The contact surface 19 is arranged at the lowest part of the cavity body with the copper cap sinking, and the inclined guide surface 18 is designed above the contact surface 19, so that the connecting sheet can be well contacted with the copper cap. A compression spring 11 is sleeved outside the copper cap.

Claims

1. The utility model provides a pen-type ignition coil high-voltage end structure which characterized in that: the high-voltage connection device comprises a shell, wherein a secondary framework is arranged in the shell, a secondary coil is wound on the secondary framework, the secondary framework extends downwards into a cavity below the shell, a resistance coil is wound on an extension section of the secondary framework, and the tail end of the resistance coil is connected with a spring in a high-voltage connection rod through a connection structure.

2. The high-voltage end structure of a pen-type ignition coil according to claim 1, characterized in that: the connecting structure comprises a connecting piece and a connecting cap which are connected with each other, the connecting piece is connected with the extension section of the secondary framework, and the connecting cap is connected with the spring.

3. The high-voltage end structure of a pen-type ignition coil according to claim 1, characterized in that: the connecting structure comprises a connecting piece, an annular clamping surface is arranged at one end of the connecting piece, barbs are arranged on the surface of the annular clamping surface, the annular clamping surface is inserted into the extending section of the secondary framework, a connecting column is arranged on the side face of the connecting piece, and the tail end of the resistance coil is fixed on the connecting column.

4. The high-voltage end structure of a pen-type ignition coil according to claim 1, characterized in that: the connecting structure further comprises a connecting cap which is a metal cap, the connecting cap comprises an annular connecting edge, the connecting edge is fixed on the shell, the connecting cap further comprises a sunken cavity, and a spring is sleeved outside the cavity.

5. The high-voltage end structure of a pen-type ignition coil according to claim 2, 3 or 4, wherein: the end of the connecting piece connected with the connecting cap is provided with an elastic opening, the elastic opening end of the connecting piece is inserted in the cavity, and the outer surface of the connecting piece is connected with the inner wall of the cavity of the connecting cap.

6. The high-voltage end structure of a pen-type ignition coil according to any one of claims 1 to 4, wherein: the diameter of the extension section of the secondary framework is smaller than that of the secondary framework, a through hole is formed in the center of the extension section of the secondary framework, and a connecting piece of a connecting structure is installed in the through hole.