阅读说明：本技术 一种球型连接的发动机喷油器接线柱结构 (Ball-type connected terminal structure of engine fuel injector ) 是由 苏金龙 柳芳 谢夏琳 段振涛 孙步武 于 2021-09-29 设计创作，主要内容包括：本发明公开了一种球型连接的发动机喷油器接线柱结构,包括焊板主体,所述焊板主体安装在线束的一侧,所述焊板主体的下方设置有喷油器线束球形接线盖,所述喷油器线束球形接线盖的下方设置有喷油器球形接线柱,本发明中该装置接触面积大,控制电磁阀的通、断的电流通过半球型主体连接来传递电流,接触面积最大,传导电流最大,同时喷油器线束球形接线盖下部采用卡扣主体与喷油器球形接线柱半球型主体下端面连接且为过盈配合,保证连接方便、可靠,断路故障失效风险较低,本发明中改装置连接可靠,喷油器线束球形接线盖通过顶部第二点焊板连接线束,确保连接可靠；喷油器球形接线柱下端圆柱通过第一点焊板与电磁阀连接,确保连接可靠。(The invention discloses a ball-type connected terminal structure of an engine fuel injector, which comprises a welding plate main body, the welding plate main body is arranged at one side of the wire harness, a fuel injector wire harness spherical wiring cover is arranged below the welding plate main body, the device has large contact area, the current for controlling the on and off of the electromagnetic valve is connected through the hemispherical main body to transmit the current, the contact area is the largest, the conduction current is the largest, meanwhile, the lower part of the injector wire harness spherical wiring cover is connected with the lower end face of the injector wire harness spherical wiring terminal hemispherical main body by adopting the buckle main body and is in interference fit, so that convenience and reliability in connection are ensured, and the failure risk of open circuit fault is low; the lower end cylinder of the spherical binding post of the oil sprayer is connected with the electromagnetic valve through the first spot welding plate, so that reliable connection is ensured.)

1. The utility model provides an engine injector terminal structure that ball type is connected, includes welds board main part (3), its characterized in that: the welding plate is characterized in that the welding plate main body (3) is installed on one side of the wire harness (2), a fuel injector wire harness spherical wiring cover (4) is arranged below the welding plate main body (3), and a fuel injector spherical wiring terminal (1) is arranged below the fuel injector wire harness spherical wiring cover (4).

2. A ball-type connected engine injector terminal structure according to claim 1, characterized in that: the fuel injector spherical wiring terminal (1) is composed of a hemispherical main body (11), a column body (12) and a first spot welding plate (13), wherein the first spot welding plate (13) is installed at the axis of the lower portion of the column body (12), and the hemispherical main body (11) is installed above the column body (12).

3. A ball-type connected engine injector terminal structure according to claim 1, characterized in that: the fuel injector wire harness spherical wiring cover (4) is composed of a buckle main body (41), a cover body (42) and a second spot welding plate (43), wherein the second spot welding plate (43) is installed on the axis above the cover body (42), and the buckle main body (41) is installed on two sides below the cover body (42).

4. A ball-type connected engine injector terminal structure according to claim 1, characterized in that: the welding plate main body (3) is of a circular ring-shaped structure, a round hole is formed in the axis inside the welding plate main body (3), and a support plate is arranged at the intersection of the welding plate main body (3) and the wire harness (2).

5. A ball-type connected engine injector terminal structure according to claim 1, characterized in that: the wire harness (2) is of a round tubular structure with a hollow interior, and a protective sleeve is arranged on the outer side of the wire harness (2).

6. A ball-type connected engine injector terminal structure according to claim 3, characterized in that: the buckle main bodies (41) are provided with two buckle main bodies (41), and the two buckle main bodies (41) are of folded structures.

7. A ball-type connected engine injector terminal structure according to claim 2, characterized in that: the hemispherical main body (11) is of a hemispherical structure, and the hemispherical main body (11) is of an upwards convex structure.

Technical Field

The invention belongs to the technical field of fuel engine accessories, and particularly relates to a ball-type connected terminal structure of an engine fuel injector.

Background

With the upgrading of emission and oil consumption regulations, a high-pressure common rail fuel injection system is basically adopted for the whole vehicle and the engine. The fuel injector, which is an important component of a fuel injection system, controls not only the atomization of fuel but also the fuel injection amount. The fuel injection quantity is controlled by the on-off time of the electromagnetic valve of the fuel injector, so that the quality of the terminal structure of the fuel injector is very important for a fuel system of an engine.

The existing oil sprayer wiring terminal consists of an oil sprayer wiring terminal and an oil sprayer wiring harness wiring nut, wherein the oil sprayer wiring terminal is of a threaded structure, and a connecting sheet is arranged below the oil sprayer wiring terminal and connected with an oil sprayer electromagnetic valve; after the fuel injector wire harness wiring nut and the fuel injector wiring terminal are tightly twisted, the lower wire harness connecting sheet and the fuel injector wiring terminal connecting sheet are tightly pressed to transmit control current, so that the on-off of the electromagnetic valve is controlled.

The current for controlling the on and off of the electromagnetic valve is transmitted only through the connecting sheet, the contact area of the connecting sheet circular ring is small, the conduction current is limited, and meanwhile, the risk of open circuit fault failure is high;

the injector wiring terminal bolt is smaller, the bolt is easy to break, and meanwhile, the injector wiring harness wiring nut is smaller in size and higher in sliding tooth failure risk.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a ball-type connected terminal structure of an engine fuel injector.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an engine fuel injector terminal structure of ball type connection, is including welding the board main part, weld the board main part and install the one side at the pencil, the below of welding the board main part is provided with the spherical wiring lid of sprayer pencil, the below of the spherical wiring lid of sprayer pencil is provided with the spherical terminal of sprayer.

Preferably, the spherical wiring terminal of the fuel injector consists of a hemispherical main body, a cylinder and a first spot welding plate, the first spot welding plate is arranged at the lower axial center of the cylinder, and the hemispherical main body is arranged above the cylinder.

Preferably, the injector wire harness spherical wiring cover is composed of a buckle main body, a cover body and a second spot welding plate, the second spot welding plate is installed on the axis above the cover body, and the buckle main body is installed on two sides below the cover body.

Preferably, the welding plate main body is of a circular ring-shaped structure, a circular hole is formed in the axis inside the welding plate main body, and a support plate is arranged at the intersection of the welding plate main body and the wire harness.

Preferably, the wire harness is a round tubular structure with a hollow interior, and a protective sleeve is arranged on the outer side of the wire harness.

Preferably, the number of the buckle main bodies is two, and the two buckle main bodies are of folded structures.

Preferably, the hemispherical main body is of a hemispherical structure, and the hemispherical main body is of an upward convex structure.

The device has large contact area, the current for controlling the on and off of the electromagnetic valve is connected through the hemispherical main body to transmit the current, the contact area is largest, the conduction current is largest, meanwhile, the lower part of the injector wire harness spherical wiring cover is connected with the lower end surface of the hemispherical main body of the injector spherical wiring terminal by adopting the buckle main body and is in interference fit, the connection is ensured to be convenient and reliable, and the failure risk of the open circuit is lower;

the improved connection is reliable, the oil sprayer wire harness spherical wiring cover is connected with the wire harness through the second spot welding plate on the top, and the reliable connection is ensured; the lower end cylinder of the spherical binding post of the oil injector is connected with the electromagnetic valve through a first spot welding plate, so that reliable connection is ensured;

the invention provides a ball-type connected terminal structure of an engine fuel injector, which not only has larger contact area for transmitting current and lower failure risk of open circuit fault, but also adopts a ball-shaped connection structure to ensure reliable connection and lower failure rate of the structure.

Drawings

FIG. 1 is a schematic front view of a ball-type engine fuel injector terminal post configuration of the present invention;

FIG. 2 is a schematic diagram of a front view of a spherical terminal of the fuel injector of the present invention;

fig. 3 is a front view structural schematic diagram of a fuel injector wiring harness spherical wiring cover in the invention.

Reference numerals: 1. a spherical binding post of the oil injector; 11. a hemispherical main body; 12. a cylinder; 13. a first spot welding plate; 2. a wire harness; 3. welding the plate main body; 4. a fuel injector wire harness spherical wiring cover; 41. a buckle main body; 42. a cover body; 43. and a second spot-welded plate.

Detailed Description

The following further describes a specific embodiment of the ball-type connected engine fuel injector terminal structure according to the present invention with reference to fig. 1 to 3. The ball-type connected engine injector terminal structure of the present invention is not limited to the description of the following embodiments.

Example 1:

this example gives: the utility model provides an engine fuel injector terminal structure that ball type is connected, including welding board main part 3, weld board main part 3 and install the one side at pencil 2, pencil 2 is inside hollow circle tubular structure, the outside of pencil 2 is provided with the lag, the below of welding board main part 3 is provided with the spherical wiring lid 4 of sprayer pencil, it is the ring column structure to weld board main part 3, the inside axle center department of welding board main part 3 is provided with the circular shape hole, the crossing department of welding board main part 3 and pencil 2 is provided with the extension board, the below of the spherical wiring lid 4 of sprayer pencil is provided with the spherical terminal 1 of sprayer.

By adopting the technical scheme:

the oil sprayer spherical binding post 1 is composed of a hemispherical main body 11, a column body 12 and a first spot welding plate 13, the first spot welding plate 13 is installed at the lower axial center of the column body 12, a cylinder at the lower end of the oil sprayer spherical binding post 1 is connected with an electromagnetic valve through the first spot welding plate 13, reliable connection is guaranteed, the hemispherical main body 11 is installed above the column body 12, the hemispherical main body 11 is of a hemispherical structure, and the hemispherical main body 11 is of an upwards-protruding structure.

By adopting the technical scheme:

the injector wire harness spherical wiring cover 4 is composed of a buckle main body 41, a cover body 42 and a second spot welding plate 43, the second spot welding plate 43 is installed at the axle center above the cover body 42, the buckle main body 41 is installed at two sides below the cover body 42, the number of the buckle main bodies 41 is two, the lower portion of the injector wire harness spherical wiring cover 4 is connected with the lower end face of the injector spherical wiring terminal 1 hemispherical main body 11 through the buckle main body 41 and is in interference fit, convenience and reliability in connection are guaranteed, the risk of failure of open circuit faults is low, and the two buckle main bodies 41 are of a folding structure.

The working principle is as follows: when the device is used, a user firstly takes out the oil sprayer spherical binding post 1, then the oil sprayer spherical binding post 1 is connected with the electromagnetic valve through the first spot welding plate 13 inside the oil sprayer spherical binding post 1, then the user takes out the oil sprayer wiring harness spherical wiring cover 4, then the oil sprayer wiring harness spherical wiring cover 4 is fixedly connected with the welding plate main body 3 at one side of the wiring harness 2 through the second spot welding plate 43 inside the oil sprayer wiring harness spherical wiring cover 4,

then the lower part of the injector wire harness spherical wiring cover 4 is connected with the lower end surface of the hemispherical main body 11 in the injector spherical wiring terminal 1 by adopting the buckle main body 41 and is in interference fit, the convenient and reliable connection is ensured, the failure risk of open circuit fault is lower,

then, current for controlling on/off of the solenoid valve is transmitted through the hemispherical body 11, and thus the use of the device is completed.