Wire harness outlet structure for oil sprayer

Abstract

The utility model belongs to the field of fuel injection, and particularly relates to a wire harness outlet structure for a fuel injector, which comprises a fuel injector main body, a metal corrugated pipe, a fixing block and a connector, a wire harness hole is arranged on the fuel injector main body, one end of the metal corrugated pipe is fixed in the wire harness hole, and the other end of the metal corrugated pipe is fixed in the connector. The connector assembly is fixed to the other end of the metal corrugated pipe through a fixing block, and a control wire is arranged in the metal corrugated pipe in a penetrating mode and connected with the connector assembly. The wire outlet structure of the utility model has an electromagnetic shielding capability; high wear resistance is achieved, and the problem of electromagnetic shielding failure after wire harness wear caused by engine vibration can be effectively avoided; the wire harness connector has high drawing resistance, so that the wire harness connector is not easy to loosen in a vibration or drawing process; the device has certain flexibility, can be bent at an orifice of a fuel injector wire harness, and is easy for mounting a solenoid valve wire.

Description

Technical Field

[0001] The utility model belongs to the field of fuel injection, and in particular relates to a wire harness outlet structure for a fuel injector. Background Art

[0002] In electronically controlled high-pressure common rail systems, the fuel injector is a core component. The wiring harness for these electronically controlled fuel injectors transmits the driving electrical signals. Currently, to prevent electromagnetic interference, the solenoid valve wiring harness for the injector is typically wrapped with metal braid, copper foil, or aluminum foil. While these methods address electromagnetic shielding, engine vibration can easily wear these wiring harnesses during use, rendering the electromagnetic shielding ineffective. Furthermore, these wiring harnesses are not resistant to pull-outs.

[0003] For example, patent publication number CN219299444U, titled "An Electromagnetic Shielding Structure for Injector Electromagnet Outlet Cables," utilizes a woven mesh for electromagnetic shielding. However, due to the relatively soft mesh structure, the wire harness cannot guarantee high wear resistance. When the engine vibrates, the woven mesh can easily break due to prolonged friction against the injector wiring harness opening, rendering the electromagnetic shielding ineffective. Summary of the Invention

[0004] In order to solve the problem of shielding and wear resistance of the injector wiring harness, a wiring harness outlet structure for the injector is proposed. It not only solves the electromagnetic shielding problem, but also has a high pull-out resistance. Under engine vibration, it can ensure that the injector orifice and the wiring harness will not cause wiring harness wear after long-term friction, thereby causing electromagnetic shielding failure.

[0005] The technical solution of the utility model is as follows: a wiring harness outlet structure for a fuel injector, comprising: a fuel injector body, a metal bellows, a fixing block and a connector, wherein a wiring harness hole is provided on the fuel injector body, one end of the metal bellows is fixed in the wiring harness hole, the connector is fixed to the other end of the metal bellows via a fixing block, a control wire is passed through the metal bellows, and the control wire is connected to the connector.

[0006] Furthermore, the metal bellows is made of stainless steel.

[0007] Furthermore, the metal bellows is fixed in the wiring harness hole by welding or adhesive injection.

[0008] Furthermore, the fixing block is fixed to the other end of the metal bellows by welding or bolts.

[0009] The beneficial effects of the utility model are as follows: the wire outlet structure of the utility model has electromagnetic shielding capability; it has high wear resistance, which can effectively avoid the problem of electromagnetic shielding failure after the wiring harness is worn due to engine vibration; it has high pulling resistance, which is not easy to cause the wiring harness connector to loosen during vibration or pulling; it has a certain degree of elasticity and can be bent at the injector wiring harness orifice, which is easy to install the solenoid valve wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0011] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts should fall within the scope of protection of the present invention.

[0012] In the technical solution of the present utility model, Figure 1 This is a structural diagram provided according to the specific structure of the wiring harness outlet structure for the injector of the utility model, as shown in FIG. Figure 1 As shown, the utility model specifically includes:

[0013] The fuel injector comprises an injector body 1, a metal bellows 2, a fixing block 4, and a connector 5. The injector body 1 is provided with a wiring hole 101, into which one end of the metal bellows 2 is fixed. Specifically, the metal bellows 2 is fixed to the wiring hole 101 by welding or adhesive injection. The injector wiring hole 101 and the stainless steel bellows 2 can be fixedly connected by methods such as adhesive injection or welding.

[0014] The connector 5 is fixed to the other end of the metal bellows 2 via a fixing block 4 . Specifically, the fixing block 4 is fixed to the other end of the metal bellows 2 via welding or bolts.

[0015] A control wire 3 is passed through the metal bellows 2, and the control wire 3 is connected to the connector 5. The connector is a connecting plug of a wire, and is used to connect to an external controller or other equipment.

[0016] The metal bellows 2 is made of stainless steel. This metal bellows provides electromagnetic shielding capabilities and high wear resistance, effectively preventing electromagnetic shielding failure caused by engine vibration-induced harness wear. It also has high pullout resistance, preventing the harness connector from loosening due to vibration or pulling. It also has a certain degree of flexibility and can be bent around the injector harness opening, facilitating solenoid valve wire installation.

[0017] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to examples, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A wiring harness outlet structure for a fuel injector, characterized in that: include: An injector body (1), a metal bellows (2), a fixing block (4) and a connector (5); a wiring harness hole (101) is provided on the injector body (1); one end of the metal bellows (2) is fixed in the wiring harness hole; the connector (5) is fixed to the other end of the metal bellows (2) through the fixing block (4); a control wire (3) is passed through the metal bellows (2); and the control wire (3) is connected to the connector (5).

2. The wiring harness outlet structure for the fuel injector according to claim 1, characterized in that: The metal bellows (2) is made of stainless steel.

3. The wiring harness outlet structure for the fuel injector according to claim 1, characterized in that: The metal bellows (2) is fixed in the wiring harness hole (101) by welding or adhesive injection.

4. The wiring harness outlet structure for a fuel injector according to any one of claims 1 to 3, characterized in that: The fixing block (4) is fixed to the other end of the metal bellows (2) by welding or bolts.

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