CN221799954U - Engine - Google Patents

Abstract

The utility model provides an engine, which comprises a cylinder cover, a wire harness cover plate and a wire harness connector, wherein the cylinder cover comprises a top plate and a side plate vertically extending downwards from the periphery of the top plate, a first mounting hole is formed in the side plate, at least two first fixing holes are formed in the periphery of the first mounting hole, the wire harness cover plate is fixed with the cylinder cover, the wire harness cover plate comprises a second mounting hole, a limiting block and a second fixing hole, the limiting block is arranged at the bottom of the second mounting hole and extends from the wire harness cover plate to the side of the cylinder cover, a groove is formed in the limiting block along the axial direction of the second mounting hole, the wire harness connector comprises a clamping groove and a positioning block, the positioning block is arranged at the bottom of the wire harness connector and is used for being matched with the groove to limit, and a thrust piece is inserted into the clamping groove. According to the utility model, when the wire harness connector sequentially passes through the first mounting hole and the second mounting hole and the positioning block is arranged in the groove, the thrust plate is inserted into the clamping groove, the wire harness connector and the wire harness cover plate are fixedly clamped, and the phenomenon that the wire harness connector rotates or moves forwards and backwards in the running process of the engine is avoided.

Description

An engine

Technical Field

The utility model relates to the technical field of internal combustion engines, in particular to an engine.

Background Art

At present, the injectors of four-valve diesel engines are all set in the cylinder head cover. Generally, a cylinder head cover is set outside the engine cylinder head. Sensors are set on the injector harness. The signals of these sensors need to be transmitted through the harness. The harness connecting the sensor is usually connected to the external harness by the cylinder head cover. These harnesses located in the cylinder head cover are called in-cylinder harnesses.

There is no standardization for the installation method of the wiring harness connector in the engine cylinder. The wiring harness connector in the cylinder has no fixed position when installed on the cylinder head cover. During the operation of the engine, the wiring harness connector may rotate or move back and forth.

At present, the most common way to connect the in-cylinder wiring harness with the engine wiring harness is to fix the connection through a connector set in the middle of the cylinder head cover. The cylinder head cover connector is a cover shell added between the cylinder head and the cylinder head cover. This way of connecting the in-cylinder wiring harness with the engine wiring harness requires the assembly of more parts, and the assembly structure is complex and the assembly process is cumbersome, which is not conducive to improving the assembly efficiency. In addition, the cylinder head cover connector and the cylinder head need to be sealed with a rubber strip, which increases the probability of engine oil leakage and affects the efficiency of engine assembly.

Therefore, it is necessary to provide an engine to overcome the above-mentioned defects.

Utility Model Content

The purpose of the utility model is to provide an engine.

According to one aspect of the utility model, there is provided an engine, comprising:

Body,

A cylinder head, the cylinder head being fixed to the top of the engine body;

A cylinder head cover, the cylinder head cover is fixed to the top of the cylinder head, the cylinder head cover comprises a top plate and a side plate extending vertically downward from the periphery of the top plate, the side plate is provided with a first mounting hole, and the periphery of the first mounting hole is provided with at least two first fixing holes;

A wiring harness cover plate, the wiring harness cover plate is fixed to the cylinder head cover, the wiring harness cover plate comprises a second mounting hole arranged corresponding to the first mounting hole, a stop block arranged at the bottom of the second mounting hole and extending from the wiring harness cover plate to the side where the cylinder head cover is located, and a second fixing hole arranged corresponding to the first fixing hole, the stop block is placed in the first mounting hole and has a groove formed along the axial direction of the second mounting hole;

A wiring harness connector, the wiring harness connector comprising a circumferentially arranged slot and a positioning block arranged at the bottom of the wiring harness connector for cooperating with the slot for limiting the position, a thrust plate inserted in the slot, when the wiring harness connector passes through the first mounting hole and the second mounting hole in sequence and the positioning block is placed in the slot, the thrust plate is inserted into the slot to fix the wiring harness connector and the wiring harness cover.

Preferably, a convex wall is provided on the outer circumference of the first mounting hole, and the first fixing holes are opened on the convex wall and are symmetrically arranged at the upper and lower ends of the first mounting hole.

Preferably, the wiring harness cover plate further includes a guide surface extending from the second mounting hole toward the side where the cylinder head cover is located, and the guide surface extends radially outward from the second mounting hole.

Preferably, the positioning block includes a main body extending backward from the bottom of the wiring harness connector and a blocking portion extending vertically downward from the end of the main body. During installation, the main body is placed in the groove, and the blocking portion is placed behind the positioning block and abuts against the end of the limit block.

Preferably, the bottom wall of the first mounting hole is arranged horizontally, and the limiting block is placed above the bottom wall.

Preferably, the cylinder head cover is provided with a breather connection port, and the breather connection port is tubular and transversely arranged on the cylinder head cover, with a portion extending outside the cylinder head cover and a portion extending inside the cylinder head cover.

Preferably, the cylinder head cover also includes an oil-gas separation portion communicated with the breather connection port and an avoidance portion for avoiding the installation of a wiring harness bracket, and a partition is provided on the inner surface of the top plate along the length direction, and the oil-gas separation portion and the avoidance portion are separated by the partition.

Preferably, the oil-gas separation part further comprises at least two oil baffles which are spaced and staggered, and the oil baffles are vertically extended downward from the inner surface of the top plate.

Preferably, reinforcing ribs are distributed on the top plate and the side plates in the avoidance portion.

Preferably, the cylinder head cover also includes a plurality of cylindrical mounting platforms arranged on the outside of the side plate and a mounting flange arranged on the circumference of the bottom of the side plate, the mounting flange is used for detachable connection with the cylinder head, and the top plate is provided with an oil port for adding engine oil.

Compared with the prior art, the engine provided by the utility model has the following beneficial effects:

Due to the adoption of the above technical scheme, the utility model has the advantages of simple structure, easy processing and low cost, and the original cylinder head cover connector is not slightly modified. The wiring harness connector is directly installed on the cylinder head cover through the wiring harness cover plate, and the cylinder wiring harness and the external wiring harness are connected without using the cylinder head cover connector. Because the space occupied by the cylinder head cover connector is eliminated, the installation space of the engine is saved, the engine oil leakage points are reduced, and the efficiency of the whole machine assembly is improved. At the same time, it also prevents the wiring harness connector from rotating or moving back and forth during the operation of the engine, thereby ensuring the stability of the wiring harness connection contact.

BRIEF DESCRIPTION OF THE DRAWINGS

The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

FIG1 is a perspective view of a cylinder head cover of an engine according to the present invention;

FIG2 is a top view of the engine cylinder head cover of the utility model;

Fig. 3 is a cross-sectional view taken along line A-A in Fig. 2;

FIG4 is a bottom view of the engine cylinder head cover of the utility model;

FIG5 is a front view of the cylinder head cover of the present invention;

FIG6 is a perspective view of the wiring harness cover of the present invention;

FIG. 7 is a second perspective view of the wiring harness cover of the present invention.

Among them, 1. cylinder head cover, 11. top plate, 111. oil port, 112. partition, 113. oil baffle, 12. side plate, 121. first mounting hole, 122. first fixing hole, 123. convex wall, 124. cylindrical mounting platform, 125. mounting flange, 13. respirator connection port, 14. reinforcing rib, 2. wiring harness cover, 21. second mounting hole, 22. limit block, 23. groove, 24. second fixing hole, 25. guide surface, 3. wiring harness connector, 31. slot, 32. positioning block, 321. main body, 322. blocking part, 4. thrust plate, a. oil-gas separation part, b. avoidance part.

DETAILED DESCRIPTION

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

It should be further understood that the term “and/or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

1 and 3, the present embodiment discloses an engine, including a body (not shown in the figure), a cylinder head (not shown in the figure), a cylinder head cover 1, a wiring harness cover plate 2 and a wiring harness connector 3. The cylinder head is fixed to the top of the body, the cylinder head cover is fixed to the top of the cylinder head, and the wiring harness connector 3 passes through the cylinder head cover 1 and is fixed to the cylinder head cover 1 through the wiring harness cover plate 2.

Referring to FIG. 5 , the cylinder head cover 1 includes a top plate 11 and a side plate 12 extending vertically downward from the circumference of the top plate 11. The top plate 11 is provided with an oil port 111 for adding oil. The side plate 12 is provided with a first mounting hole 121, and a convex wall 123 is provided on the outer circumference of the first mounting hole 121. The convex wall 123 is provided with two first fixing holes 122, and the first fixing holes 122 are symmetrically arranged at the upper and lower ends of the first mounting hole 121.

Referring to Fig. 6 and Fig. 7, the wiring harness cover plate 2 is fixed to the cylinder head cover 1, and the wiring harness cover plate 2 includes a second mounting hole 21 corresponding to the first mounting hole 121, a stopper 22 provided at the bottom of the second mounting hole 21 and extending from the wiring harness cover plate 2 to the side where the cylinder head cover 1 is located, and a second fixing hole 24 corresponding to the first fixing hole 122. The wiring harness cover plate 2 is fixed to the cylinder head cover 1 by bolts passing through the first fixing hole 122 and the second fixing hole 24. The bottom wall of the first mounting hole 121 is a horizontal surface, and in other embodiments, it may also be an arc surface or other special-shaped surfaces, and there is no special restriction on the shape of the first mounting hole 121.

The stop block 22 is placed in the first mounting hole 121 and a groove 23 is formed on the upper surface of the stop block 22 along the axial direction of the second mounting hole 21. The wiring harness cover plate 2 also includes a guide surface 25 extending from the second mounting hole 21 to the side where the cylinder head cover 1 is located. The guide surface 25 extends radially outward from the second mounting hole 21. The setting of the guide surface 25 plays a guiding installation role, and the wiring harness connector 3 can be quickly and accurately inserted into the second mounting hole 21.

2 and 3, the harness connector 3 includes a slot 31 arranged along the circumferential direction and a positioning block 32 arranged at the bottom of the harness connector 3 for cooperating with the groove 23 for limiting. A thrust plate 4 is inserted into the slot 31. When the harness connector 3 passes through the second mounting hole 21 and the positioning block 32 is placed in the groove 23, the thrust plate 4 is inserted into the slot 32 to fix and clamp the harness connector 3 and the harness cover 2.

The positioning block 32 includes a main body 321 extending backward from the bottom of the wiring harness connector 3 and a blocking portion 322 extending vertically downward from the end of the main body 321. During installation, the main body 321 is placed in the groove 23, and the blocking portion 322 is placed behind the limiting block 22 and abuts against the end of the limiting block 22.

When the wiring harness connector 3 passes through the first mounting hole 121 and is arranged in the second mounting hole 21, the main body 321 of the positioning block 32 is placed in the groove 23, and the blocking portion 322 and the end of the limit block 22 abut against each other, the slot 31 is located outside the cylinder head cover 1, and the thrust plate 4 is inserted into the slot 31, and the thrust plate 4 and the wiring harness cover plate 2 abut against each other, thereby jointly limiting the axial movement of the wiring harness connector 3.

Referring to FIG. 1 and FIG. 4 , the cylinder head cover 1 is provided with a breather connection port 13, which is arranged transversely on the cylinder head cover 1 in a tubular shape, with a portion extending outside the cylinder head cover 1 and a portion extending inside the cylinder head cover 1. The cylinder head cover 1 also includes an oil-gas separation portion a connected to the breather connection port 13 and an avoidance portion b for avoiding the installation of the wiring harness bracket. A partition 112 is arranged on the inner surface of the top plate 11 along the length direction, and the oil-gas separation portion a and the avoidance portion b are separated by the partition 112.

The oil-gas separation part a also includes 7 oil baffles 113 that are staggered and spaced apart. The oil baffles 113 extend vertically downward from the inner surface of the top plate 11 to form a labyrinth-shaped separation chamber in the oil-gas separation part a. Reinforcement ribs 14 are distributed on the top plate 11 and the side plate 12 in the avoidance part b. The cylinder head cover 1 also includes a plurality of cylindrical mounting platforms 124 disposed on the outer side of the side plate 12 and a mounting flange 125 disposed on the circumference of the bottom of the side plate 12, and the mounting flange 125 is used for detachable connection with the cylinder head.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims (10)

1. An engine, comprising:

The machine body is provided with a machine body,

The cylinder cover is fixed at the top of the machine body;

The cylinder cover comprises a top plate and a side plate which vertically extends downwards from the periphery of the top plate, wherein a first mounting hole is formed in the side plate, and at least two first fixing holes are formed in the periphery of the first mounting hole;

The wire harness cover plate is fixed with the cylinder cover and comprises a second mounting hole, a limiting block and a second fixing hole, wherein the second mounting hole is arranged corresponding to the first mounting hole, the limiting block is arranged at the bottom of the second mounting hole and extends from the wire harness cover plate to one side where the cylinder cover is located, the second fixing hole is arranged corresponding to the first fixing hole, and the limiting block is arranged in the first mounting hole and is axially provided with a groove along the second mounting hole;

The wire harness connector comprises a clamping groove arranged along the circumferential direction and a positioning block arranged at the bottom of the wire harness connector and used for limiting in cooperation with the groove, a thrust plate is inserted into the clamping groove, and when the wire harness connector sequentially passes through the first mounting hole and the second mounting hole and the positioning block is arranged in the groove, the thrust plate is inserted into the clamping groove to fix and clamp the wire harness connector and the wire harness cover plate.

2. The engine of claim 1, wherein the first mounting hole has a protruding wall formed in an outer circumferential direction thereof, and the first fixing hole is formed in the protruding wall and symmetrically disposed at upper and lower ends of the first mounting hole.

3. The engine of claim 2, wherein the harness cover plate further includes a guide surface extending from the second mounting hole toward a side where the head cover is located, the guide surface being radially outwardly flared from the second mounting hole.

4. An engine according to claim 3, wherein the locating block comprises a body portion extending rearwardly from the bottom of the harness connector and a blocking portion extending vertically downwardly from the end of the body portion, the body portion being disposed in the recess when installed, the blocking portion being disposed rearwardly of the locating block and abutting the end of the stopper.

5. The engine of claim 4, wherein the bottom wall of the first mounting hole is horizontally disposed, and the stopper is disposed above the bottom wall.

6. The engine according to claim 5, wherein the head cover is provided with a breather port which is provided in a tubular shape laterally on the head cover, with a portion thereof extending outside the head cover and a portion thereof extending inside the head cover.

7. The engine of claim 6, wherein the head cover further comprises an oil-gas separation portion in communication with the breather connection port and a dodging portion for dodging the wire harness support mounting, a partition is provided on an inner surface of the top plate along a length direction, and the oil-gas separation portion and the dodging portion are partitioned by the partition.

8. The engine of claim 7, wherein the oil and gas separator further comprises at least 2 oil baffles arranged in a staggered arrangement at intervals, the oil baffles extending vertically downward from an inner surface of the top plate.

9. The engine of claim 8, wherein the roof and the side panels in the relief portion are each provided with reinforcing ribs.

10. The engine of claim 8, wherein the head cover further comprises a plurality of cylindrical mounting tables arranged on the outer side of the side plate and a mounting flange arranged on the circumference of the bottom of the side plate, the mounting flange is used for being detachably connected with the cylinder cover, and an engine oil port for adding engine oil is formed in the top plate.