CN214787784U

CN214787784U - Coil sheath and have its engine

Info

Publication number: CN214787784U
Application number: CN202120093199.2U
Authority: CN
Inventors: 王培起; 沈红光; 王丙祥
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-11-19
Anticipated expiration: 2031-01-13

Abstract

The utility model relates to a coil sheath and have its engine, including the sheath body, apron and protection casing, the mounting hole has been seted up on the apron, the inward flange of mounting hole extends and forms annular baffle portion towards the protection casing direction, the protection casing is equipped with the annular bounding wall portion that sets up towards the apron, the outer peripheral face of baffle portion is located to bounding wall portion cover and forms exhaust passage with the baffle portion, the sheath body inserts in the mounting hole, the protection casing is the partly of sheath body or with the terminal surface looks butt of sheath body, the bounding wall portion is formed with first breach with apron looks butt, the baffle portion is formed with the second breach with protection casing looks butt, exhaust passage is linked together through the outside of first breach with the coil sheath, exhaust passage is linked together through the inside of second breach with the coil sheath. The utility model discloses have and solve and avoid appearing entering ignition coil bush such as water, impurity, lead to the problem of bush and spark plug corrosion.

Description

Coil sheath and have its engine

Technical Field

The utility model belongs to the technical field of the technique of engine and specifically relates to a coil sheath and have its engine is related to.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

The top of the existing ignition coil sheath is provided with an exhaust hole, when an engine runs, high-pressure gas in a cylinder can not be completely sealed by a spark plug sealing gasket, so that the high-pressure gas can be led to be connected into the ignition coil sheath in series, and a high-voltage wire assembly is damaged in a sealing manner with the outside. After the sealing is damaged, when the engine is washed or rained and the inside of the engine is stopped and the cooling machine body is changed into negative pressure, water, impurities and the like can flow into the ignition coil bushing through the exhaust hole, so that the bushing and the spark plug are rusted, and the spark plug is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of how to avoid water, impurities and the like entering the ignition coil bushing to cause the corrosion of the bushing and the spark plug. The purpose is realized by the following technical scheme:

the utility model provides a coil sheath structure, which comprises a sheath body, a cover plate and a protective cover, the cover plate is provided with a mounting hole, the inner edge of the mounting hole extends towards the direction of the protective cover and forms an annular baffle plate part, the protective cover is provided with an annular surrounding plate part which is arranged towards the cover plate, the surrounding plate part is covered on the peripheral surface of the baffle part and forms an exhaust channel with the baffle part, the sheath body is inserted into the mounting hole, the protective cover is a part of the sheath body or is abutted against the end face of the sheath body, the surrounding plate part is abutted against the cover plate and forms a first gap, the baffle plate part is abutted against the protective cover and forms a second gap, the exhaust channel is communicated with the outside of the coil sheath through the first gap, and the exhaust channel is communicated with the inside of the coil sheath through the second gap.

According to the utility model discloses a coil sheath structure, through the setting of sheath body, apron and protection casing, cancel the top exhaust hole, avoid the risk that the top was intake, water-proof effects is better.

When the engine runs, gas leaked from the spark plug gasket is discharged to the outside of the sheath body from the inside of the sheath body through the second gap, and then is smoothly discharged to the atmosphere from the outside of the sheath body through the first gap. When wasing the engine, the protection casing can avoid water to get into in the exhaust passage with the type of falling U exhaust route that the apron formed, and water-proof effects is better, has solved and has avoided entering ignition coil bush such as water, impurity, results in the corrosion of bush and spark plug.

In addition, according to the utility model discloses a coil sheath structure still can have following additional technical characterstic:

the utility model discloses an in some embodiments, the inside wall of apron portion is equipped with two at least sealed archs, at least two that the annular set up sealed protruding edge the axial direction interval of apron portion sets up, at least two sealed protruding respectively with baffle portion looks laminating, any be equipped with on the sealed arch and be used for the intercommunication exhaust passage's third breach.

The utility model discloses an in some embodiments, the lateral wall of baffle portion is equipped with two at least sealed archs, at least two that the annular set up sealed protruding edge the axial direction interval of baffle portion sets up, at least two sealed protruding respectively with bounding wall portion laminating, any be equipped with on the sealed arch and be used for the intercommunication exhaust passage's third breach.

In some embodiments of the present invention, at least two of the third notches on the sealing protrusion are arranged in an equally spaced ring shape.

In some embodiments of the present invention, at least two of the sealing protrusions have curved abutting surfaces.

In some embodiments of the present invention, the number of the at least two sealing protrusions is two, and two of the third gaps on the sealing protrusions are arranged in an annular shape with an interval of 180 °.

The utility model discloses an in some embodiments, be equipped with a plurality of fixed orificess on the apron, the fixed orifices through alternate the bolt with the cylinder cap at coil sheath place is connected.

In some embodiments of the present invention, the sheath further includes a bushing, the bushing is sleeved on the outer circumferential surface of the sheath body, and a gap is provided between the bushing and the outer circumferential surface of the sheath body.

In some embodiments of the present invention, the end surface of the surrounding plate portion is provided with the first notch, and the end surface of the baffle portion is provided with the second notch.

Another aspect of the present utility model provides an engine having the coil sheath according to any one of the above embodiments.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

FIG. 1 is a schematic structural view of the shield and the sheath body assembled with the cover plate in an integrated structure according to the present embodiment;

FIG. 2 is a schematic structural view of another embodiment of the shield and the sheath body assembled with the cover plate in a one-piece structure;

FIG. 3 is a schematic view of the structure of the cover plate having the sealing protrusion of FIG. 2;

FIG. 4 is a schematic view of an assembly structure of the shield and the sheath body with a cover plate in a split structure according to another embodiment;

fig. 5 is a schematic view illustrating the structure of the shield having the sealing protrusion of fig. 4.

Reference numerals:

1. an ignition coil; 2. a sheath body; 3. a cover plate; 31. a baffle portion; 311. a second notch; 4. a protective cover; 41. a surrounding plate portion; 411. a first notch; 5. sealing the protrusion; 51. a third notch; 6. a fixing hole; 7. a cylinder cover; 8. a bushing.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1, according to an embodiment of the present invention, a coil sheath is provided, which includes a sheath body 2, a cover plate 3 and a protective cover 4, wherein the protective cover 4 and the sheath body 2 are an integral structure, and the protective cover 4 is a part of the sheath body 2. The cover plate 3 is a disc-shaped cover and is arranged on a cylinder cover 7 of the engine, the cover plate 3 is provided with a mounting hole for being sleeved on the sheath body 2, and the inner edge of the mounting hole extends towards the direction of the protective cover 4 and forms an annular baffle plate part 31. Further, still seted up a plurality of fixed orificess 6 on the apron 3, fixed orificess 6 is connected with cylinder cap 7 at coil sheath place through alternate bolt, with apron 3 fixed mounting on cylinder cap 7. The shield 4 is provided with an annular surrounding plate portion 41 provided toward the cover plate 3, the surrounding plate portion 41 is provided coaxially with the baffle portion 31, the surrounding plate portion 41 is provided so as to cover the outer peripheral surface of the baffle portion 31, and the inner peripheral surface of the surrounding plate portion 41 and the outer peripheral surface of the baffle portion 31 form an exhaust passage for exhausting the gas inside the jacket body.

The sheath body 2 is vertically inserted into the mounting hole, and because the protective cover 4 is a part of the sheath body 2, after the sheath body 2 is inserted into the mounting hole, the surrounding plate part 41 on the protective cover 4 is abutted against the surface of the cover plate 3, and the end surface of the surrounding plate part 41 facing the cover plate 3 is provided with a first notch 411; the end surface of the baffle portion 31 facing the shield 4 abuts against the shield 4, and the end surface of the baffle portion 31 facing the shield 4 is provided with a second notch 311. The exhaust passage communicates with the outside of the coil sheath through the first notch 411, and the exhaust passage communicates with the inside of the coil sheath through the second notch 311.

When the engine is running, the gas leaked from the spark plug gasket is discharged from the inside of the sheath body 2 to the outside of the sheath body 2 through the second notch 311, and is further smoothly discharged from the outside of the sheath body 2 to the atmosphere through the first notch 411. When the engine is cleaned, the inverted U-shaped exhaust path formed by the protective cover 4 and the cover plate 3 can prevent water from entering the exhaust path, and the waterproof effect is better. Through the setting of sheath body 2, apron 3 and protection casing 4, cancel the top exhaust hole, avoid the risk that the top intake, water-proof effects is better.

As shown in fig. 1, the inner side wall of the surrounding plate portion 41 is provided with two sealing protrusions 5 arranged in an annular manner, the two sealing protrusions 5 are arranged at intervals along the axial direction of the surrounding plate portion 41, the two sealing protrusions 5 are respectively attached to the baffle plate portion 31, the two sealing protrusions 5 are provided with third notches 51 used for communicating with the exhaust passage, and the two third notches 51 are arranged in an annular manner at equal intervals.

The sealing protrusion 5 provided on the surrounding plate portion 41 has a sealing function, so that water can be prevented from entering the exhaust passage, and the waterproof effect is better. Form U type exhaust path between the sealed arch 5 of adjacent twice, the setting of third breach 51 simultaneously can be with adjacent twice U type exhaust path intercommunication, and equidistant setting can also avoid water or impurity directly to inhale in the sheath body 2 directly from first breach 411 in addition. During actual exhaust, gas is exhausted from the inside of the sheath body 2 to the outside of the sheath body 2 through the second notch 311, and then exhausted from the outside of the sheath body 2 to the first notch 411 through the third notch 51, and finally, the gas is exhausted from the first notch 411 to the atmosphere.

In another embodiment of the present application, in conjunction with fig. 2 and 3, the shield 4 and the sheath body 2 are a unitary structure, the shield 4 being part of the sheath body 2. The lateral wall of baffle portion 31 is equipped with two sealed archs 5 that the annular set up, and two sealed archs 5 set up along the axial direction interval of baffle portion 31, and two sealed archs 5 are laminated with bounding wall portion 41 mutually simultaneously, all offer the third breach 51 that is used for communicateing exhaust passage on two sealed archs 5.

The sealing bulge 5 and the third notch 51 are arranged on the baffle plate part 31, so that the processing difficulty of the coil sheath is reduced, and the working efficiency is improved.

With reference to fig. 1 to 3, further, the edges of the two sealing protrusions 5 are provided with arc-shaped abutting surfaces. The arc-shaped binding face is attached to the surface of the baffle plate part 31 or the surface of the enclosing plate part 41, so that water is better prevented from entering the exhaust passage, and the waterproof effect is better.

Further, the third notches 51 of two adjacent sealing protrusions 5 are annularly arranged at an interval of 180 °. The third notch 51 is staggered by 180 degrees, when water or impurities enter the outer part of the sheath body 2 from the first notch 411, the third notch 51 can avoid the leaked water or impurities from being directly sucked into the second notch 311 from the first notch 411 and entering the exhaust passage, and the waterproof effect is further improved.

In another embodiment of the present application, with reference to fig. 4 and 5, the protective cover 4 and the sheath body 2 are of a split structure, the protective cover 4 is of a cylindrical structure, the protective cover 4 covers the sheath body 2, and the end surface of the enclosing plate portion 41 of the protective cover 4 facing the cover plate 3 is provided with a first notch 411. The top end face of protection casing 4 is respectively with the top end face of sheath body 2 and the top end face looks butt of baffle portion 31 towards protection casing 4, and second breach 311 has been seted up on protection casing 4 in the position of protection casing 4 and baffle portion 31 looks butt simultaneously, and exhaust passage is linked together through first breach 411 and sheath body 2's outside, and exhaust passage is linked together through second breach 311 and sheath body 2's inside.

With reference to fig. 1, 2 and 4, the present application further includes a bushing 8, the bushing 8 is sleeved on the outer circumferential surface of the sheath body 2, and a gap is formed between the bushing 8 and the outer circumferential surface of the sheath body 2. A seal is formed between the bush 8 and the sheath body 2, and an exhaust passage is left between the side wall of the bush 8 and the sheath body 2 inside the sheath, and gas leaked from the spark plug gasket is exhausted from the exhaust passage formed by the bush 8 and the sheath body 2 to the second notch 311.

Design protection casing 4 alone, simultaneously will seal protruding 5 and breach setting on protection casing 4, reduced the processing degree of difficulty of coil sheath and apron 3, when the leakproofness goes wrong, the maintenance is changed in the dismouting of being convenient for moreover, has improved work efficiency.

The present application further provides an engine comprising an ignition system comprising the coil sheath described above.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A coil sheath, characterized by: comprises a sheath body, a cover plate and a protective cover, wherein the cover plate is provided with a mounting hole, the inner edge of the mounting hole extends towards the protective cover and forms an annular baffle part, the protective cover is provided with an annular surrounding plate part which is arranged towards the cover plate, the surrounding plate part is covered on the peripheral surface of the baffle part and forms an exhaust channel with the baffle part, the sheath body is inserted into the mounting hole, the protective cover is a part of the sheath body or is abutted against the end face of the sheath body, the surrounding plate part is abutted against the cover plate and forms a first gap, the baffle plate part is abutted against the protective cover and forms a second gap, the exhaust channel is communicated with the outside of the coil sheath through the first gap, and the exhaust channel is communicated with the inside of the coil sheath through the second gap.

2. The coil sheath of claim 1, wherein: the inside wall of apron portion is equipped with two at least sealed archs that the annular set up, two at least sealed protruding edge the axial direction interval of apron portion sets up, two at least sealed protruding respectively with baffle portion laminating mutually, arbitrary be equipped with in the sealed arch and be used for the intercommunication exhaust passage's third breach.

3. The coil sheath of claim 1, wherein: the lateral wall of baffle portion is equipped with two at least sealed archs that the annular set up, two at least sealed protruding edge the axial direction interval of baffle portion sets up, two at least sealed protruding respectively with the laminating of baffle portion, arbitrary be equipped with in the sealed arch and be used for the intercommunication exhaust passage's third breach.

4. The coil sheath of claim 2 or 3, wherein: the third gaps on the at least two sealing bulges are annularly arranged at equal intervals.

5. The coil sheath of claim 2 or 3, wherein: at least two of the sealing bulges are provided with arc-shaped binding surfaces.

6. The coil sheath of claim 4, wherein: the number of the at least two sealing bulges is two, and the third gaps on the two sealing bulges are annularly arranged at an interval of 180 degrees.

7. The coil sheath of claim 1, wherein: the cover plate is provided with a plurality of fixing holes, and the fixing holes are connected with the cylinder cover where the coil sheath is located through inserting bolts.

8. The coil sheath of claim 1, wherein: the sheath comprises a sheath body and is characterized by further comprising a lining, wherein the lining is sleeved on the outer peripheral surface of the sheath body, and a gap is formed between the lining and the outer peripheral surface of the sheath body.

9. The coil sheath of claim 1, wherein: the end face of the surrounding plate portion is provided with the first notch, and the end face of the baffle portion is provided with the second notch.

10. An engine, characterized in that: having a coil sheath according to any one of claims 1 to 9.