A ball-type connected engine fuel injector terminal structure

Abstract

The present invention discloses a spherical connection engine fuel injector terminal structure, comprising a welding plate body, wherein the welding plate body is installed on one side of a wiring harness, a fuel injector wiring harness spherical wiring cover is arranged below the welding plate body, and a fuel injector spherical wiring post is arranged below the fuel injector wiring harness spherical wiring cover. The device of the present invention has a large contact area, and the current for controlling the on and off of the electromagnetic valve is transmitted through the connection of the hemispherical body, the contact area is maximum, and the conduction current is maximum. At the same time, the lower part of the fuel injector wiring harness spherical wiring cover adopts a snap body to be connected to the lower end surface of the hemispherical body of the fuel injector spherical wiring post and is an interference fit, thereby ensuring convenient and reliable connection and a low risk of circuit breaker failure. The device of the present invention has reliable connection, the fuel injector wiring harness spherical wiring cover is connected to the wiring harness through the second spot welding plate on the top to ensure reliable connection; the lower end cylinder of the fuel injector spherical wiring post is connected to the electromagnetic valve through the first spot welding plate to ensure reliable connection.

Description

Technical Field

[0001] The invention belongs to the technical field of fuel engine accessories, in particular to a ball-type connected engine fuel injector terminal structure. Background Art

[0002] With the upgrade of emission and fuel consumption regulations, vehicles and engines basically adopt high-pressure common rail fuel injection system. As an important part of the fuel injection system, the injector not only controls the atomization of the fuel, but also controls the amount of fuel injection. The amount of fuel injection is controlled by the on and off time of the injector solenoid valve, so the quality of the injector terminal structure is crucial to the engine fuel system.

[0003] The existing fuel injector terminal is composed of a fuel injector terminal and a fuel injector wiring harness terminal nut, wherein the fuel injector terminal is a threaded structure, and a connecting piece is provided below to connect with the fuel injector solenoid valve; after the fuel injector wiring harness terminal nut is tightened with the fuel injector terminal, the wiring harness connecting piece below is pressed against the fuel injector terminal connecting piece to transmit the control current, thereby controlling the on and off of the solenoid valve.

[0004] The current that controls the on and off of the solenoid valve is transmitted only through the connecting piece. The contact area of ​​the connecting piece ring is small, the conduction current is limited, and the risk of circuit breaker failure is high.

[0005] The injector terminal bolts are small and easy to break. At the same time, the injector wiring harness nuts are small in size and have a higher risk of failure due to slipping. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the prior art and provide a ball-type connected engine injector terminal structure.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A ball-connected engine fuel injector terminal structure comprises a welding plate body, wherein the welding plate body is mounted on one side of a wiring harness, a fuel injector wiring harness spherical terminal cover is arranged below the welding plate body, and a fuel injector spherical terminal is arranged below the fuel injector wiring harness spherical terminal cover.

[0009] Preferably, the injector spherical terminal is composed of a hemispherical body, a column and a first spot welding plate, the first spot welding plate is installed at the lower axis of the column, and the hemispherical body is installed above the column.

[0010] Preferably, the injector harness spherical wiring cover is composed of a buckle body, a cover body and a second spot welding plate, the second spot welding plate is installed at the axis above the cover body, and the buckle body is installed on both sides below the cover body.

[0011] Preferably, the welding plate body is a circular ring structure, a circular hole is arranged at the inner axis of the welding plate body, and a support plate is arranged at the intersection of the welding plate body and the wiring harness.

[0012] Preferably, the wiring harness is a circular tubular structure with a hollow interior, and a protective cover is provided on the outside of the wiring harness.

[0013] Preferably, there are two buckle bodies in total, and the two buckle bodies are folding structures.

[0014] Preferably, the hemispherical body is a hemispherical structure, and the hemispherical body is an upward convex structure.

[0015] The device of the present invention has a large contact area, and the current for controlling the on and off of the solenoid valve is transmitted through the hemispherical main body connection, the contact area is the largest, and the conduction current is the largest. At the same time, the lower part of the spherical wiring cover of the injector harness adopts a buckle main body to connect with the lower end surface of the hemispherical main body of the spherical wiring post of the injector, and the connection is convenient and reliable, and the risk of circuit breaker failure is low;

[0016] The device of the present invention is reliably connected. The spherical wiring cover of the fuel injector wiring harness is connected to the wiring harness through the second spot welding plate on the top to ensure reliable connection; the lower end cylinder of the fuel injector spherical wiring post is connected to the solenoid valve through the first spot welding plate to ensure reliable connection;

[0017] The present invention proposes a ball-connected engine injector terminal structure, which not only has a large contact area for transmitting current and a low risk of short circuit failure, but also adopts a ball-connected structure to ensure reliable connection and a low structural failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view schematic diagram of the ball-type connected engine injector terminal structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the front view structure of the spherical terminal of the fuel injector in the present invention;

[0020] Figure 3 The present invention is a schematic diagram of the front view structure of the spherical wiring cover of the fuel injector wiring harness.

[0021] Figure numerals: 1, injector spherical terminal; 11, hemispherical body; 12, column; 13, first spot welding plate; 2, wiring harness; 3, welding plate body; 4, injector wiring harness spherical terminal cover; 41, buckle body; 42, cover body; 43, second spot welding plate. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-3, further illustrating a specific implementation of a ball-type connection engine fuel injector terminal structure of the present invention. A ball-type connection engine fuel injector terminal structure of the present invention is not limited to the description of the following embodiments.

[0023] Embodiment 1:

[0024] The present embodiment provides: a ball-type connected engine injector terminal structure, including a welding plate body 3, the welding plate body 3 is installed on one side of the wiring harness 2, the wiring harness 2 is a circular tubular structure with a hollow interior, a protective sleeve is arranged on the outside of the wiring harness 2, an injector wiring harness spherical terminal cover 4 is arranged below the welding plate body 3, the welding plate body 3 is a circular ring structure, a circular hole is arranged at the internal axis of the welding plate body 3, a support plate is arranged at the intersection of the welding plate body 3 and the wiring harness 2, and an injector spherical terminal 1 is arranged below the injector wiring harness spherical terminal cover 4.

[0025] By adopting the above technical solution:

[0026] The injector spherical terminal 1 is composed of a hemispherical body 11, a column 12 and a first spot welding plate 13. The first spot welding plate 13 is installed at the lower axis of the column 12. The lower end cylinder of the injector spherical terminal 1 is connected to the solenoid valve through the first spot welding plate 13 to ensure a reliable connection. The hemispherical body 11 is installed above the column 12. The hemispherical body 11 is a hemispherical structure and an upward convex structure.

[0027] By adopting the above technical solution:

[0028] The injector wiring harness spherical wiring cover 4 is composed of a snap body 41, a cover body 42 and a second spot welding plate 43. The second spot welding plate 43 is installed at the axis above the cover body 42, and the snap body 41 is installed on both sides below the cover body 42. There are two snap bodies 41 in total. The lower part of the injector wiring harness spherical wiring cover 4 adopts the snap body 41 to connect with the lower end surface of the hemispherical body 11 of the injector spherical terminal 1 and is an interference fit, which ensures convenient and reliable connection and a low risk of circuit breaker failure. The two snap bodies 41 are folding structures.

[0029] Working principle: When the device is to be used, the user first takes out the injector ball terminal 1, and then connects it to the solenoid valve through the first spot welding plate 13 inside the injector ball terminal 1, then takes out the injector wire harness ball terminal cover 4, and then fixes it to the welding plate body 3 on one side of the wire harness 2 through the second spot welding plate 43 inside the injector wire harness ball terminal cover 4.

[0030] Afterwards, the lower part of the injector harness spherical wiring cover 4 is connected to the lower end surface of the hemispherical body 11 inside the injector spherical terminal 1 by a snap body 41 and an interference fit is adopted to ensure convenient and reliable connection and low risk of circuit breaker failure.

[0031] Afterwards, the current for controlling the on and off of the electromagnetic valve is connected through the hemispherical body 11 to transmit the current, thus completing the use of the device.

Claims

1. A ball-type connected engine injector terminal structure, comprising a welding plate body (3), characterized in that: The welding plate body (3) is installed on one side of the wiring harness (2), a fuel injector wiring harness spherical wiring cover (4) is arranged below the welding plate body (3), and a fuel injector spherical wiring post (1) is arranged below the fuel injector wiring harness spherical wiring cover (4); The injector spherical terminal (1) is composed of a hemispherical body (11), a column (12) and a first spot welding plate (13), wherein the first spot welding plate (13) is installed at the lower axis of the column (12), and the hemispherical body (11) is installed above the column (12); The injector harness spherical wiring cover (4) is composed of a buckle body (41), a cover body (42) and a second spot welding plate (43), wherein the second spot welding plate (43) is installed at the axis center above the cover body (42), and the buckle body (41) is installed on both sides below the cover body (42); The welding plate body (3) is a circular ring structure, a circular hole is arranged at the inner axis of the welding plate body (3), and a support plate is arranged at the intersection of the welding plate body (3) and the wire harness (2); The wiring harness (2) is a circular tubular structure with a hollow interior, and a protective sleeve is provided on the outside of the wiring harness (2); There are two buckle bodies (41) in total, and the two buckle bodies (41) are folding structures; The hemispherical body (11) is a hemispherical structure, and the hemispherical body (11) is an upward convex structure.

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