Corona ignition device

Abstract

The corona ignition device comprises an insulating shell, an electrode and a screw-out mechanism, a winding sleeve is arranged in the insulating shell, a metal coil is wound on the periphery of the winding sleeve, a groove is formed in the side wall of the insulating shell, a ceramic sleeve is arranged at the front end of the insulating shell, the electrode is arranged in the insulating shell, and the screw-out mechanism is arranged in the ceramic sleeve. The electrode is arranged in the ceramic sleeve, the screw-out mechanism comprises a threaded column connected with the tail end of the electrode and a nut matched with the threaded column, the nut is shifted to drive the threaded column to push the electrode to extend outwards under the limiting and guiding action of the limiting and guiding groove on the limiting sliding block, and the electrode is screwed out through the screw-out mechanism. And after the loss is shortened, the length of the electrode can be adjusted without disassembly, so that the loss is saved, and the operation is simple.

Description

Technical Field

[0001] The invention relates to the technical field of automobile ignition devices, in particular to a corona ignition device. Background Art

[0002] The automotive corona ignition device uses arc discharge at the spark plug to initiate ignition and is subject to significant wear and tear due to electrode corrosion.

[0003] When the electrode is worn out to the moving length, the ignition function cannot be realized, and the corona ignition device can only be dismantled and replaced for maintenance, which has high loss cost and inconvenient maintenance operation.

[0004] For this purpose, the present application designs a corona ignition device, which does not need to be disassembled as a whole after the electrode is consumed. After the electrode is worn out, the electrode extension length can be adjusted and the device can continue to be used, which reduces maintenance costs and is easy to operate. Summary of the Invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid blurring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0006] In view of the above problems and / or problems existing in the use of corona ignition devices, the present invention is proposed.

[0007] Therefore, the purpose of the present invention is to provide a corona ignition device, which drives the threaded column to push the electrode outward under the limiting and guiding action of the limiting guide groove on the limiting slider by turning the nut, thereby adjusting the length of the electrode. After the loss becomes shorter, the electrode length can be adjusted without disassembly, saving loss and simple operation. The front end outlet of the ceramic sleeve is divided into multiple areas by the partition plate at the front end of the ceramic sleeve. When the electrode extends outward, the front end of the electrode is forked in conjunction with the extended groove at the front end of the electrode to form a needle-shaped forked structure. Through the setting of the needle-shaped fork, a particularly large plasma volume can be generated during ignition, further improving the ignition performance.

[0008] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions: A corona ignition device comprising: An insulating shell, wherein a winding sleeve is provided inside the insulating shell, a metal coil is wound around the outer circumference of the winding sleeve, a groove is provided on the side wall of the insulating shell, a ceramic sleeve is provided at the front end of the insulating shell, and a separator is provided at the front end of the ceramic sleeve; An electrode, the electrode being disposed inside the insulating housing, the front end of the electrode being provided with a needle-shaped fork extending from the ceramic sleeve, the front end of the electrode being provided with an extended groove, the extended groove corresponding to the separator in a one-to-one manner; The unscrewing mechanism includes a threaded column connected to the electrode end and a nut matched with the threaded column.

[0009] As a preferred solution of the corona ignition device described in the present invention, the interior of the insulating shell is filled with an insulating medium, and a limiting guide groove is provided inside the insulating shell.

[0010] As a preferred solution of the corona ignition device described in the present invention, the front end of the ceramic sleeve is configured to have a rounded corner.

[0011] As a preferred solution of the corona ignition device described in the present invention, the threaded column is made of insulating material, the nut pattern is made of insulating material, and the nut portion extends out of the groove.

[0012] As a preferred solution of the corona ignition device described in the present invention, a rotation groove is provided inside the insulating shell, and a rotation ring that cooperates with the rotation groove is provided on the side wall of the nut.

[0013] As a preferred solution of the corona ignition device described in the present invention, a connector is provided at the rear end of the ceramic sleeve, and the connector is fixedly connected to the front end of the insulating shell.

[0014] As a preferred solution of the corona ignition device described in the present invention, a conductive core is provided inside the threaded column, the conductive core is electrically connected to the electrode, and a limiting slider that cooperates with the limiting guide groove is provided at the rear end of the threaded column.

[0015] As a preferred solution of the corona ignition device described in the present invention, a metal cover is provided at the rear end of the insulating shell, and the metal cover is fixedly connected to the end of the insulating shell through threads.

[0016] As a preferred solution of the corona ignition device described in the present invention, the conductive core is connected to a wire, and the wire is electrically connected to the metal cover.

[0017] Compared with the prior art, the present invention has the following beneficial effects: this corona ignition device, by turning the nut, under the limiting and guiding action of the limiting guide groove on the limiting slider, drives the threaded column to push the electrode outward, thereby adjusting the length of the electrode. After the loss becomes shorter, the electrode length can be adjusted without disassembly, saving loss and simple operation. The front end outlet of the ceramic sleeve is divided into multiple areas by the partition plate at the front end of the ceramic sleeve. When the electrode is extended outward, the front end of the electrode is forked in conjunction with the extended groove at the front end of the electrode to form a needle-shaped forked structure. The needle-shaped fork arrangement can generate a particularly large plasma volume during ignition, further improving the ignition performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them: Figure 1 This is a schematic diagram of the overall structure of a corona ignition device of the present invention; Figure 2 This is a schematic cross-sectional view of a corona ignition device according to the present invention; Figure 3 This is a schematic diagram of the explosion structure of a corona ignition device of the present invention; Figure 4 This is a schematic diagram of a needle-shaped bifurcated structure of a corona ignition device of the present invention; Figure 5 This is a schematic structural diagram of the ceramic sleeve portion of a corona ignition device of the present invention.

[0019] 100. Insulating shell; 101. Limiting guide groove; 102. Groove; 110. Insulating medium; 120. Winding sleeve; 130. Metal coil; 140. Ceramic sleeve; 141. Connector; 142. Separator; 150. Metal cover; 200. Electrode; 201. Extended groove; 210. Needle-shaped fork; 300. Unscrewing mechanism; 310. Threaded column; 311. Limiting slider; 312. Conductive core; 313. Wire; 320. Nut; 321. Rotating ring. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged to scale. Furthermore, these schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0022] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0023] The present invention provides a corona ignition device. The front end outlet of the ceramic sleeve is divided into multiple areas by a separator at the front end of the ceramic sleeve. When the electrode extends outward, the front end of the electrode is bifurcated in conjunction with an extended groove at the front end of the electrode to form a needle-shaped bifurcated structure. The needle-shaped bifurcated structure generates a particularly large plasma volume during ignition, thereby improving ignition performance. By turning a nut, the threaded column is driven to push the electrode outward under the limiting and guiding action of a limiting guide groove on a limiting slider, thereby adjusting the length of the electrode. After the electrode is shortened due to wear, the electrode length can be adjusted without disassembly, thereby saving wear and simplifying operation.

[0024] Figure 1-Figure 5 The structure diagram of a corona ignition device according to the present invention is shown. Figure 1-Figure 5 The corona ignition device of this embodiment includes an insulating shell 100, an electrode 200 and a screw-out mechanism 300.

[0025] The insulating shell 100 is divided by a separator 142 at the front end of the ceramic sleeve 140, and the front end outlet of the ceramic sleeve 140 is divided into multiple areas. When the electrode 200 extends outward, the front end of the electrode 200 is forked with the extended groove 201 at the front end of the electrode 200 to form a needle-shaped fork 210 structure. Specifically, a winding sleeve 120 is provided inside the insulating shell 100, and a metal coil 130 is wound around the outer periphery of the winding sleeve 120. The side wall of the insulating shell 100 is provided with a groove 102, and the front end of the insulating shell 100 is provided with a ceramic sleeve 140. In this embodiment, The insulating shell 100 is filled with an insulating medium 110, and a limiting guide groove 101 is provided inside the insulating shell 100. The front end of the ceramic sleeve 140 is set to a rounded corner, and the front end of the ceramic sleeve 140 is provided with a separator 142. The interior of the insulating shell 100 is provided with a rotation groove, and the rear end of the ceramic sleeve 140 is provided with a connector 141. The connector 141 is fixedly connected to the front end of the insulating shell 100. The rear end of the insulating shell 100 is provided with a metal cover 150, and the metal cover 150 is fixedly connected to the end of the insulating shell 100 by a thread. The electrode 200, through the arrangement of the needle-shaped fork 210, generates a particularly large plasma volume during ignition, thereby improving ignition performance. Specifically, the electrode 200 is disposed within the insulating housing 100. The front end of the electrode 200 is provided with a needle-shaped fork 210 extending from the ceramic sleeve 140. In this embodiment, the front end portion of the electrode 200 is provided with an extended groove 201, and the extended groove 201 corresponds one-to-one with the separator 142. The screw-out mechanism 300 drives the threaded column 310 to push the electrode 200 outward by toggling the nut 320 under the limiting guiding action of the limiting guide groove 101 on the limiting slider 311, thereby adjusting the length of the electrode 200. After the loss becomes shorter, the length of the electrode 200 can be adjusted without disassembly, saving loss and simple operation. Specifically, the screw-out mechanism 300 includes a threaded column 310 connected to the end of the electrode and a nut 320 matched with the threaded column 310. In this embodiment, the threaded column 310 is an insulating The nut 320 is made of a corrugated insulating material. Part of the nut 320 extends out from the groove 102. The side wall of the nut 320 is provided with a rotating ring 321 that cooperates with the rotating groove. The interior of the threaded column 310 is provided with a conductive core 312. The conductive core 312 is electrically connected to the electrode 200. The rear end of the threaded column 310 is provided with a limiting slider 311 that cooperates with the limiting guide groove 101. The conductive core 312 is connected to a wire 313, and the wire 313 is electrically connected to the metal cover 150.

[0026] Combine Figure 1-Figure 5 The corona ignition device of this embodiment is specifically used as follows: the front end outlet of the ceramic sleeve 140 is divided into multiple areas by the separator 142 at the front end of the ceramic sleeve 140. When the electrode 200 extends outward, the front end of the electrode 200 is forked in conjunction with the extended groove 201 at the front end of the electrode 200 to form a needle-shaped fork 210 structure. The arrangement of the needle-shaped fork 210 allows for the generation of a particularly large plasma volume during ignition, thereby improving ignition performance. By turning the nut 320, the threaded column 310 is driven to push the electrode 200 outward under the limiting and guiding action of the limiting guide groove 101 on the limiting slider 311, thereby adjusting the length of the electrode 200. After the electrode 200 is shortened, the length of the electrode 200 can be adjusted without disassembly, saving loss and simplifying operation.

[0027] Although the present invention has been described above with reference to embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as there are no structural conflicts, the various features of the embodiments disclosed herein may be combined with each other in any manner, and the omission of an exhaustive description of such combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A corona ignition device, characterized in that: include: An insulating housing (100), wherein a winding sleeve (120) is provided inside the insulating housing (100), a metal coil (130) is wound around the outer periphery of the winding sleeve (120), a groove (102) is provided on a side wall of the insulating housing (100), a ceramic sleeve (140) is provided at the front end of the insulating housing (100), and a separator (142) is provided at the front end of the ceramic sleeve (140); An electrode (200), the electrode (200) being disposed inside the insulating housing (100), the front end of the electrode (200) being provided with a needle-shaped fork (210) extending from the ceramic sleeve (140), the front end of the electrode (200) being provided with an extension groove (201), the extension groove (201) corresponding one-to-one to the separator (142); A screw-out mechanism (300) comprises a threaded column (310) connected to the end of the electrode and a nut (320) matched with the threaded column (310).

2. A corona ignition device according to claim 1, characterized in that: The insulating shell (100) is filled with an insulating medium (110), and a limiting guide groove (101) is provided inside the insulating shell (100).

3. A corona ignition device according to claim 2, characterized in that: The front end of the ceramic sleeve (140) is configured as a rounded corner.

4. A corona ignition device according to claim 3, characterized in that: The threaded column (310) is made of insulating material, the nut (320) is made of threaded insulating material, and a portion of the nut (320) extends out of the groove (102).

5. A corona ignition device according to claim 4, characterized in that: A rotation groove is provided inside the insulating housing (100), and a rotation ring (321) is provided on the side wall of the nut (320) to cooperate with the rotation groove.

6. A corona ignition device according to claim 5, characterized in that: A connector (141) is provided at the rear end of the ceramic sleeve (140), and the connector (141) is fixedly connected to the front end of the insulating housing (100).

7. A corona ignition device according to claim 6, characterized in that: A conductive core (312) is provided inside the threaded column (310), and the conductive core (312) is electrically connected to the electrode (200). A limiting slider (311) that cooperates with the limiting guide groove (101) is provided at the rear end of the threaded column (310).

8. A corona ignition device according to claim 7, characterized in that: A metal cover (150) is provided at the rear end of the insulating housing (100), and the metal cover (150) is fixedly connected to the end of the insulating housing (100) via threads.

9. A corona ignition device according to claim 8, characterized in that: The conductive core (312) is connected to a wire (313), and the wire (313) is electrically connected to the metal cover (150).

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