CN204024817U - The combined valve cover with wiring harness mounting structure - Google Patents

Abstract

The utility model provides a kind of combined valve cover with wiring harness mounting structure, and it comprises: wire harness, and it defines a pair of line portion that approaches a pair of electric coupler that is located thereon; With valve chest assembly, it defines compartment and comprises that at least two extend to integrated line attachment in compartment and in the wall of described valve chest assembly, and this of wherein said wire harness fixed by the corresponding line attachment at least two line attachment of valve chest assembly respectively line portion.The utility model can effectively firmly fix wire harness, and to reduce vibration, and cost is low.

Description

The combined valve cover with wiring harness mounting structure

Technical field

The utility model relates to the fuel system mechanism of internal-combustion engine, relates in particular to the assemble line fixing-assembly for electric wire in stationary engine seat valve lid.

Background technique

For example, power generation equipment (as generator), and construction equipment (as wheel loader, cat and motor grader), be subject to high vibration by solenoidal the produced vibration of internal-combustion engine and fuel system mechanism conventionally.In addition, for example, have the machine of construction equipment (as motor grader), because machine is for bad working environments operation, for movement, the smooth and various types of soil of classification, rock and other outstanding material, often produce the situation of accelerating and slowing down suddenly.The power that puts on machine can be shaken, and vibration is also transmitted sizable power conventionally to machine, otherwise this masterpiece is for parts and the subtense angle of machine.

External force and the internal vibration being produced by vehicle can be passed to motor, otherwise in motor, its assembly can be subject to vibration, shock and impact.About motor and the vibration of fuel system solenoid, obviously, if the natural frequency of these subassemblies vibration drops in the frequency of natural frequency of motor, can there is " resonance " so, cause the vibration of subassembly high amplitude, this situation often causes the lost of life of subassembly and has incipient fault.In addition,, in the different subassemblies and subtense angle of motor, compliant member (for example wire harness, flexible pipe and wire clamp) can be more vulnerable to such internal agency and external agency.

U.S. Patent No. 5,642,704(' 704 patents) the line bundled device parts that a kind of common metal stamping part forms are disclosed.When using stamping part to assemble, stamping part self is aimed at, meanwhile, by fixed block, stamping part is fixed to tapped hole.Stamping part is that wire harness provides support, and in the recessed valve gap of wire harness.Although these parts can low cost fabrication, it can be subject to vibration force and external force, and vibration force and external force are passed the life-span that can shorten wire harness and bundled device in time.And each fuel injector will need this stamping part, once stamping part breaks down, will increase the possibility that stamping part and relevant wire harness break down.

Model utility content

The new type of this practicality provides a kind of combined valve cover with wiring harness mounting structure, can solve one and/or a plurality of technical problem of the prior art.

A kind of desirable harness assembly can overcome in these narrow limitation one or more, is also easy to manufacture.In addition, a kind of extremely desirable combination harness assembly can not increase the cost with respect to known harness assembly significantly, and is adapted at an easy rate various engines model to firmly fix fuel injection line.

Wire harness assembly comprises wire harness, and this wire harness defines a pair of line portion that approaches a pair of electric coupler.Valve chest assembly defines compartment, and comprises at least two line attachment that extend in compartment.In the wall of valve chest assembly, two line attachment are one-body molded.This of wherein said wire harness fixed by the corresponding line attachment at least two line attachment of valve chest assembly respectively line portion.

Also comprise frenulum, the described line attachment of described valve chest assembly is configured and disposed for receiving described frenulum and described line portion being fixed to described line attachment.

The utility model can effectively firmly fix wire harness, reduce vibration, and cost is low.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of typical six-in-line formula diesel engine.According to shown in the utility model as the core-engine parts of cylinder head, valve chest and valve gap;

Fig. 2 is the exploded view of core-engine as shown in Figure 1;

Fig. 3 is the enlarged diagram with two cylinder compartments of removing a valve gap in Fig. 2;

Fig. 4 is the planimetric map of the two cylinder compartments in Fig. 3, shows position and the orientation of electrical wiring harness according to the present disclosure, and provides electrical connection for fuel injector;

Fig. 5 a is the enlarged diagram in bundled device region as shown in Figure 3, and this bundled device region is positioned at two cylinder compartments as shown in Figure 4;

Fig. 5 b be bundled device region according to another embodiment's described in the utility model enlarged view, this bundled device region is presented at an alternate embodiment as embodiment in two cylinder compartments as shown in Figure 4; With

Fig. 6 utilizes the schematic diagram of the V-type engine assembly of wire harness according to the utility model.

Embodiment

With reference to Fig. 1, engine pack 10 is shown, it is for according to the utlity model has Fig. 4 by wire harness assembly 32() start sparger 28(Fig. 2 with electric solenoid) the in-line arrangement compression-ignition motor that electrically connects.What can envision is the motor that this wire harness assembly 32 also can be used for other type, as compression-ignition V-type engine 10 ' (Fig. 6) and spark ignition V-type engine (not shown) or those skilled in that art known according to the disclosure, utilize any other motor of this wire harness assembly.The core component of engine pack 10 can comprise block assembly 12, cylinder head assembly 14, valve chest assembly 16, cam assembly (not shown), and bonnet assemblies 18.Can find out, engine pack 10 comprises inner member conventionally, for example the known engine part of those skilled in that art of piston, cylinder liner, connecting rod, bent axle, camshaft (all not illustrating) and burning and compressor arrangement.

With reference to Fig. 2, conventionally housing assembly 12 comprises a plurality of combustion cylinders 21, although motor 10 can be called as multiple cylinder engine, motor 10 illustrates with six cylinders and in line engine, yet be anticipated that, the utility model is equally applicable to three cylinders, eight cylinders or twelve cylinder enine, and not only can be motor in-line arrangement but also that can be V-type, example motor 10 ' as shown in FIG. 6.Housing assembly 12 also comprises the arbor (not shown) being rotatably supported in cylinder body 12, by connecting rod (not shown), the to-and-fro motion of each piston (not shown) is passed to rotatablely moving of arbor.The axis of the center line of the cylinder body of the interface by cylinder body 12 and head 14 is called as engine axis 13.

Cylinder head assembly 14 is connected to housing assembly 12 by bolt, conventionally covers the top of housing assembly 12 to seal the firing chamber being positioned at wherein.Cylinder head assembly 14 is provided for the passage of air inlet and exhaust and for example, for the installation of parts, valve-group 22, spark plug (not shown) or fuel injector 28.Conventionally, valve-group 22 comprises suction valve and outlet valve.By opening and closing valve-group 22 control combustion parameter and the engine efficiencies in each firing chamber.The operation of the camshaft (not shown) control valve-group 22 of assembling by the level parallel with engine axis 13.

Referring again to Fig. 3, fuel injector 28, is arranged in cylinder head assembly 14, injects the fuel of estimate to firing chamber 21(Fig. 2 associated with it at every turn).By engine control module (not shown), control the starting time of fuel injection and the stroke that fuel sprays, to produce power demand.Valve chest assembly 16, seals top, wire harness 34 and the rocking arm set 24 of fuel injector 28.Bonnet assemblies 18 is set to cover valve chest assembly 16.

At the valve chest assembly 16 of the six cylinder engine shown in Fig. 2, be generally the rectangular configuration of the compartment 20 with three similar sizes.Each compartment 20 is convenient to approach near the parts that are arranged at two cylinders 21.The valve chest assembly 16 that builds compartment is useful, can enter like this each two cylinder compartment 20, and without disturbing other valve gap 19.There is single valve gap 19 and contribute to assemble air intake device group 17 to one in valve gap 19, without connecting other valve gap 19, reduced engineering time.Each two cylinder compartment 20 that illustrate as best in Fig. 3 cover at least a set of two adjacent cylinder 21(Fig. 2) and seal valve-group 22, actuator (not shown), fuel injector 28, rocking arm 25 and electric coupler 26.

Each electric coupler 26 is elongated and has an attached end 27 of line, the line portion 36 of electric coupler 26 is alignd to guarantee fixedly to come from well in the attached end 27 of line with association line attachment 40 and 42, line attachment 40 and 42 be separately positioned on electric coupler 26 the attached end 27 of line near.Each electric coupler 26 provides current to the reception electronic equipment (not shown) of each fuel injector 28, it typically is starting fluid sparger 28 and fuel is injected into cylinder 21.

With reference to Fig. 4, now wire harness assembly 32 will be described.Wire harness assembly 32 comprises that the wire harness of T shape or electrical wiring harness 34 and line attachment 40 and 42(line attachment 40 and 42 are connected to the inside 31 of the wall 30 of valve chest assembly 16.Line attachment 40 and 42 comprises the hole 44 of running through, and be constructed to receive frenulum 46 with fix or synchronous wire harness 34 to line attachment 40 and 42.But what can envision is that frenulum 46 can be cable well-known to those skilled in the art-be, zipper strip, line or any other belt for wiring harness is fixed to supporting structure.

Line attachment 40 is relative with each electric coupler 26 in compartment 20 with 42, and fixing to guarantee the line of tandem electric coupler 26 and the attached end 27 of line, at this, the line to the position limited quantity of electric coupler 26 is not supported like this.As everyone knows, if line portion 36 is not effectively fixed, during engine operation, they easily vibrate and therefore the line of electric coupler interface will die down, and because the line portion not fixedly secured is vibrated, line portion understands damaged and finally breaks down.When the natural frequency of line portion 36 vibration is closer to the frequency of okperation of motor time, the vibration amplitude of line portion 36 can sharply increase.

With reference to Fig. 5 a, the exemplary embodiment having from the valve chest assembly 16 of the attachment 40 of its prolongation and 42 is shown.Obviously, line attachment 40 and 42 can be one-body molded in casting process, and stretch out from the inside 31 of wall 30.Alternatively, line attachment can be " bolt is fixed " L shaped bracket, and bracket is fixed to the inside 31 of wall 30.As shown in Figure 5 a, line attachment 40 and 42 usually can be rectangle, and has oval-shaped hole 44.Alternatively, Fig. 5 b shows and has semicircular line attachment 40 ' and 42 ' and the optional embodiment of circular apertures 44 '.The utility model has been conceived can be by other substitutes that those of ordinary skills understood.

Industrial applicibility

In internal-combustion engine, compliant member is as line, wire harness, flexible pipe, etc., fixing (for example in unsuitable position, take identical fixing) due to incorrect or inappropriate line before their expected service life can break down.For example, because parts (the line portion that comes from electric coupler) are subject to engine luggine, therefore should be well fixing critical component, for example the line portion 36 of the attached end 27 of line of electric coupler 26 as shown in Figure 4.

At the assembly process with the fuel injector wire harness 34 of valve chest assembly 16, each wire harness 34 comprises two line portions 36, winding displacement is to fuel injector 28 power supplies, these line portions 36 are fixed to line attachment 40 and 42, by frenulum 46 is also synchronously downward by frenulum 46 through hole 44, until line attachment 40 and 42 are fixed in line portion 36.By this design, wire harness assembly 32 is constituent elements of main valve frame set 16 structures, and reasonably fixed beam 34 produces vibration to reduce wire harness 34 at weakness zone.In addition, this design is more cheap, and cost of production is minimum.

Although do not departing under the scope of claims, the utility model is set forth in conjunction with described embodiment, it should be apparent to those skilled in the art that and can carry out various modifications and variations.From considering specification of the present utility model and practice, other embodiment is apparent for those skilled in the art.It is exemplary that specification and embodiment should be regarded as merely, and protection domain of the present utility model is determined by claim and equivalent thereof.

Claims (2)

1. a combined valve cover with wiring harness mounting structure, is characterized in that, comprising:

Wire harness, it defines a pair of line portion that approaches a pair of electric coupler that is located thereon;

Valve chest assembly, it defines compartment and comprises that at least two extend to integrated line attachment in described compartment and in the wall of described valve chest assembly,

Wherein, a pair of line portion of described wire harness is fixed by the corresponding line attachment at least two line attachment of valve chest assembly respectively.

2. according to the combined valve cover with wiring harness mounting structure described in claim 1, it is characterized in that, also comprise frenulum, the described line attachment of described valve chest assembly is configured and disposed for receiving described frenulum and described line portion being fixed to described line attachment.