CN106150688B - Timing drive chain chamber unit and timing chain system - Google Patents
Timing drive chain chamber unit and timing chain system Download PDFInfo
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- CN106150688B CN106150688B CN201510177826.XA CN201510177826A CN106150688B CN 106150688 B CN106150688 B CN 106150688B CN 201510177826 A CN201510177826 A CN 201510177826A CN 106150688 B CN106150688 B CN 106150688B
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- Prior art keywords
- chain guide
- chain
- guide body
- timing
- contact surface
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/022—Chain drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
- F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/18—Means for guiding or supporting belts, ropes, or chains
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a timing transmission chain chamber unit and a timing chain system. The timing chain system (100) comprises a timing chain cell unit (1), the timing chain cell unit (1) having: an elastic fixing force generated by an elastic restoring force of the chain guide (30) and the chain guide body (20) in close contact with each other; a locking force generated by the chain guide (30) and the chain guide body (20) coming into face contact with each other at the side portions; and a rib fixing force generated by an assembly in which the chain guide (30) and the chain guide body (20) are brought into close contact with each other, so that the timing transmission chain chamber unit (1) can be assembled without using bolts, and specifically without using bolts, the fastening force of which is reduced by vibration (e.g., shaking) of the engine, thereby reducing chain noise and satisfying the euro 6 regulations.
Description
Cross Reference to Related Applications
This application claims priority from korean patent application No. 10-2014-0151006, filed on 3/11/2014, the entire contents of which are incorporated herein by reference in their entirety.
Technical Field
Exemplary embodiments of the present invention relate to a timing chain chamber, and more particularly, to a timing chain system equipped with a timing chain chamber unit that can be assembled by integrally combining a chain guide (chain guide) with a timing chain chamber without bolts.
Background
generally, a timing chain system adjusts the timing of the intake/exhaust valves by transmitting a portion of the power from the engine to the camshaft and accessories and maintains operation of the engine.
For this, the timing chain is composed of a crank-high pressure pump timing chain (crank-high pressure timing chain) which connects and integrally rotates the crank sprocket and the high pressure pump sprocket, a high pressure pump cam timing chain (high pressure pump timing chain), and a tensioner; the high-pressure pump cam timing chain is connected with and integrally rotates the high-pressure pump chain wheel and the cam chain wheel; while the tensioner maintains tension in the timing chain.
Generally, a timing chain system includes a timing chain chamber, and the timing chain chamber is disposed in front of a cylinder head and a cylinder block, and a crankshaft and a camshaft protrude from the timing chain chamber.
Specifically, the timing chain chamber further includes a timing chain track guide to maintain the stability of the timing chain rotation track.
disclosure of Invention
however, the timing chain rail guide is a separable chain guide formed by combining the chain guide with the timing chain chamber with bolts, and thus takes a long time to assemble due to many operation steps and is high in manufacturing cost due to a large number of parts.
Specifically, the timing chain system includes a separable chain guide for each of the crankshaft high pressure pump timing chain and the high pressure pump cam timing chain, thus requiring two chain guides, two chain guide bodies, and four bolts, and thus the time for assembly and manufacture is further increased.
Further, the bolt force fastening the chain guide and the timing chain chamber is reduced due to the vibration of the engine, so that the resistance capability against NVH (noise, vibration, harshness) is deteriorated.
Embodiments of the present invention provide a timing drive chain chamber unit that enables assembly without bolts by assembling a chain guide into a chain guide body formed in a timing drive chain chamber, and can satisfy euro 6 regulations by improving problems due to chain noise because it does not use bolts, the fastening force of which is reduced particularly due to vibration (e.g., shaking) of an engine.
according to an embodiment of the present invention, a timing drive chain chamber unit includes: a timing drive chain chamber disposed in front of a cylinder block and a cylinder head of the engine; a chain guide in contact with the timing chain; and a chain guide body integrally formed with the timing transmission chain chamber and generating a bolt-less fixing force together with the chain guide, wherein the bolt-less fixing force is an elastic fixing force generated by an elastic restoring force of the chain guide and the chain guide body contacting each other, a locking force, and a fin fixing force; the locking force is generated by the chain guide and the chain guide body contacting each other through side surface contact; the rib fixing force is generated by the chain guide and the chain guide body assembled in contact with each other.
the chain guide body at the lower and upper positions may be composed of a contact surface, left and right fixing portions formed at left and right sides of the contact surface, and a groove formed on the contact surface, and the chain guide combined with the chain guide body at the lower and upper positions may be composed of an attachment surface contacting the contact surface, left and right pressing portions formed at left and right sides of the attachment surface, and a rib protruding at the attachment surface.
The chain guide body formed at the lower position may be composed of a contact surface, left and right fixing parts formed at left and right sides of the contact surface, and a groove formed on the contact surface, the chain guide combined with the chain guide body formed at the lower position may be composed of an attachment surface contacting the contact surface of the chain guide body, left and right pressing parts formed at left and right sides of the attachment surface, and a rib protruding at the attachment surface, the improved chain guide body formed at the upper position may be composed of a contact surface and left and right fixing parts formed at left and right sides of the contact surface, and the improved chain guide combined with the improved chain guide body formed at the upper position may be composed of an attachment surface contacting the improved chain guide body and left and right pressing parts formed at left and right sides of the attachment surface And (4) forming.
The left and right pressing portions of the chain guide may be shorter than the left and right fixing portions of the chain guide body and generate an elastic fixing force, the locking force may be generated by a change in a contact surface between the left pressing portion of the chain guide and the left fixing portion of the chain guide body, the fin fixing force may be generated by fitting the fins of the chain guide in the grooves of the chain guide body, and the left and right pressing portions of the improved chain guide may be shorter than the left and right fixing portions of the improved chain guide body and generate an elastic fixing force, and the locking force may be generated by a change in a contact surface between the left pressing portion of the improved chain guide and the left fixing portion of the improved chain guide body.
According to another embodiment of the present invention, a timing chain system includes: a timing drive chain chamber provided in front of a cylinder head and a cylinder block of an engine, from which a high-pressure pump shaft, a crankshaft, and a camshaft protrude; the first timing chain is connected with a high-pressure pump chain wheel assembled on a high-pressure pump shaft and a crankshaft chain wheel assembled on a crankshaft; a second timing chain connected with the high pressure pump sprocket and a cam sprocket assembled on a camshaft; and a chain guide body integrally formed with the timing transmission chain chamber, and to which a chain guide supporting a first timing chain at an opposite side of a first tensioner mounted on the timing transmission chain chamber to maintain tension of the first timing chain and a chain guide supporting a second timing chain at an opposite side of a second tensioner mounted on the timing transmission chain chamber to maintain tension of the second timing chain are assembled to generate a fixing force without bolts.
according to another embodiment of the present invention, a timing chain system includes: a timing drive chain chamber provided in front of a cylinder head and a cylinder block of an engine, from which a high-pressure pump shaft, a crankshaft, and a camshaft protrude; the first timing chain is connected with a high-pressure pump chain wheel assembled on a high-pressure pump shaft and a crankshaft chain wheel assembled on a crankshaft; a second timing chain connected with the high pressure pump sprocket and a cam sprocket assembled on a camshaft; a chain guide body integrally formed with the timing chain chamber, and to which a chain guide supporting a first timing chain at an opposite side of a first tensioner mounted on the timing chain chamber to maintain tension of the first timing chain is fitted to generate a fixing force without bolts; and an improved chain guide body integrally formed with the timing drive chain chamber, and an improved chain guide supporting a second timing chain at an opposite side of a second tensioner mounted on the timing drive chain chamber to maintain tension of the second timing chain is assembled to the improved chain guide body to generate a fixing force without bolts.
According to the present invention, since the chain guide is assembled in the chain guide body formed at the timing drive chain chamber and integrally fixed in the chain guide body, they can be assembled without bolts, and particularly since bolts are not required, the number of processing steps and parts is reduced, so that it is possible to improve convenience of assembly, reduce manufacturing costs, ensure durability, reduce noise, and satisfy the euro 6 regulations.
drawings
Fig. 1 is a view showing a timing chain cell unit configuration for a timing chain system according to the present invention.
fig. 2 is an exemplary view showing a timing drive chain chamber unit according to the present invention, which is composed of a chain guide body and a chain guide, and fig. 2 is an exploded schematic view of a portion A, B of fig. 1.
FIG. 3 shows an assembled view of a chain guide body and a chain guide according to the present invention.
FIG. 4 shows an exemplary view of an improved chain guide body and an improved chain guide according to the present invention.
FIG. 5 is an exemplary view of a timing chain system having a timing chain chamber unit comprised of an improved chain guide body and an improved chain guide according to the present invention.
Detailed Description
hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, which may be embodied in various forms by those skilled in the art, and thus the present invention is not limited to the embodiments described herein.
fig. 1 shows a timing chain system 100 with a timing chain chamber unit 1 according to an embodiment of the invention.
As shown in the figure, the timing chain system 100 includes: a timing chain chamber unit 1 provided in front of a cylinder head and a cylinder block of an engine, a crankshaft and a camshaft protruding from the timing chain chamber unit 1; a first timing chain 150-1 connecting the high-pressure pump sprocket 110 and the crankshaft sprocket 120; a second timing chain 150-2 connecting the high pressure pump sprocket 110 and the cam sprocket 130; a first tensioner 160-1 that maintains tension in the first timing chain 150-1; and a second tensioner 160-2 that maintains tension in the second timing chain 150-2.
Specifically, the timing chain chamber unit 1 is composed of a timing chain chamber 10, a chain guide body 20, and a chain guide 30.
The drive shaft of the high-pressure pump protrudes through the timing chain chamber 10, and the high-pressure pump sprocket 110 is fitted on and rotates integrally with the drive shaft of the high-pressure pump. Further, the timing chain chamber 10 is cut at the lower end thereof so that the crank sprocket 120 is exposed, and the timing chain chamber 10 is cut at the upper end thereof so that the cam sprocket 130 is exposed. Further, the timing chain chamber 10 is provided with a portion to which the first tensioner 160-1 and the second tensioner 160-2 are bolted.
the chain guide body 20 and the chain guide 30 are provided in pairs at a lower position A and an upper position B, with the first timing chain 150-1 being disposed at position A and the second timing chain 150-2 being disposed at position B. Thus, the chain guide body 20 at the lower position A is formed opposite the first tensioner 160-1, while the chain guide body 20 at the upper position B is formed opposite the second tensioner 160-2. Specifically, the chain guide body 20 is integrally formed with the timing transmission chain chamber 10, and the chain guide 30 is assembled to the chain guide body 20, so that the assembly time can be reduced, unlike the bolt connection, without deteriorating the resistance to NVH (noise, vibration, and harshness) which is affected by the decrease in the fastening force due to the vibration of the engine.
FIG. 2 shows a particular configuration of the chain guide body 20 and the chain guide 30 arranged at the lower position A and the upper position B in the same manner as in FIG. 1.
The chain guide body 20 is integrally formed at a predetermined height of the timing drive chain chamber 10, the left fixing portion 21-1 protrudes at one side, the right fixing portion 21-2 protrudes at the opposite side, and one or more grooves 23-1, 23-2, 23-3 are formed on a flat contact surface 20A, which contact surface 20A is connected with the left and right fixing portions 21-1, 21-2.
Specifically, the left fixing portion 21-1 is formed as an outer convex surface to more firmly fit on the inner concave surface of the chain guide 30, while the right fixing portion 21-2 is inclined to more firmly contact the chain guide 30. The grooves 23-1, 23-2, 23-3 are first, second and third grooves 23-1, 23-2, 23-3, wherein the first groove 23-1 and the second groove 23-2 are spaced apart from each other at the contact surface 20A, and the third groove 23-3 is formed on the inclined surface of the right fixing portion 21-2.
The chain guide 30 is formed of a slightly elastic material, and has a left pressing portion 31-1, a right pressing portion 31-2, and a guide surface 30B, the left pressing portion 31-1 protruding on one side of the attachment surface 30A, the chain guide body 20 being in contact with the attachment surface 30A; the right pressing portion 31-2 protrudes at the opposite side; and the guide surface 30B is connected with the left and right pressing parts 31-1 and 31-2 and is formed at the opposite side of the attachment surface 30A such that the first timing chain 150-1 or the second timing chain 150-2 is in contact with the guide surface 30B, wherein one or more ribs 33-1, 33-2, and 33-3 protrude from the attachment surface 30A.
specifically, the left pressing part 31-1 and the right pressing part 31-2 are shorter than the left fixing part 21-1 and the right fixing part 21-2 of the chain guide body 20, so that when the left pressing part 31-1 and the right pressing part 31-2 are slightly spread and then assembled, they press the left fixing part 21-1 and the right fixing part 21-2, thereby applying a large fixing force. Further, the left pressing portion 31-1 is formed with an inner concave surface to increase a force for fixing the outer convex surface of the left fixing portion 21-1 of the chain guide body 20, and the right pressing portion 31-2 is inclined to increase a force for coming into contact with the right fixing portion 21-2 of the chain guide body 20. The ribs 33-1, 33-2, and 33-3 are first, second, and third ribs 33-1, 33-2, and 33-3, wherein the first rib 33-1 and the second rib 33-2 are spaced apart from each other at the attachment surface 30A, and the third rib 33-3 is formed on an inclined surface of the right pressing portion 31-2. The width of the ribs 33-1, 33-2 and 33-3 is slightly larger than the width of the first, second and third grooves 23-1, 23-2 and 23-3, so that the ribs 33-1, 33-2 and 33-3 can exert a large fixing force when they are assembled.
FIG. 3 shows the assembly of the chain guide body 20 and the chain guide 30.
as shown in the drawings, the chain guide 30 is slightly spread or slightly compressed and then coupled to the chain guide body 20.
thus, the left and right pressing portions 31-1 and 31-2 of the chain guide 30 are brought into close contact with the left and right fixing portions 21-1 and 21-2 of the chain guide body 20 by an elastic restoring force after assembly, thereby applying an elastic fixing force. Further, the inner concave surface of the left pressing portion 31-1 of the chain guide 30 comes into contact with the outer convex surface of the left fixing portion 21-1 of the chain guide body 20, thereby applying a large locking force. Further, the first, second, and third ribs 33-1, 33-2, and 33-3 of the chain guide 30 fit into the first, second, and third grooves 23-1, 23-2, and 23-3 of the chain guide body 20, thereby enabling a rib fixing force to be applied. The elastic fixing force, the locking force and the fin fixing force are all referred to as bolt-free fixing forces, which are different from bolt fixing forces by bolt connection.
therefore, the chain guide body 20 and the chain guide 30 provide bolt-free fixing force that does not require bolts, which can reduce assembly time and production force, unlike bolted connections, and does not cause a reduction in NVH (noise, vibration, and harshness) resistance due to a reduction in fastening force caused by engine vibration.
FIG. 4 shows an improved chain guide body 20-1 and an improved chain guide 30-1 according to an embodiment of the present invention.
As shown in the drawings, the modified chain guide body 20-1 is identical to the chain guide body 20, except for the first recess 23-1, the second recess 23-2 and the third recess 23-3. Further, the improved chain guide 30-1 is identical to the chain guide 30, except for the first rib 33-1, the second rib 33-2, and the third rib 33-3. Thus, the improved chain guide body 20-1 and the improved chain guide 30-1 do not have the rib fixing force generated by the chain guide body 20 and the chain guide 30, nor do they require the first, second, and third grooves 23-1, 23-2, and 23-3 and the first, second, and third ribs 33-1, 33-2, and 33-3 to be formed, which makes it easier to obtain the improved chain guide body 20-1 and the improved chain guide 30-1 and reduces manufacturing costs.
Therefore, the improved chain guide body 20-1 and the improved chain guide 30-1 provide bolt-free fixing force without bolts similarly to the chain guide body 20 and the chain guide 30, which can reduce assembly time and force for production, unlike bolt connection, and do not cause a decrease in NVH (noise, vibration, and harshness) resistance due to a decrease in fixing force caused by vibration of the engine.
Fig. 5 shows a timing chain system 100 according to an embodiment of the present invention, which is equipped with the timing chain chamber unit 1, the timing chain chamber unit 1 being composed of a modified chain guide body 20-1 and a modified chain guide 30-1.
As shown in the drawing, the timing chain system 100 includes a high-pressure pump sprocket 110, a crankshaft sprocket 120, a first timing chain 150-1, a cam sprocket 130, a second timing chain 150-2, a first tensioner 160-1, a second tensioner 160-2, and a timing drive chain chamber unit 1.
Thus, the timing chain system 100 is the same as the timing chain system 100 shown in FIG. 1. However, in FIG. 1, the chain guide body 20 and the chain guide 30 are disposed at the lower position A and the upper position B in the same manner, whereas in the configuration shown in FIG. 5, the chain guide body 20 and the chain guide 30 are disposed at the lower position A, while the modified chain guide body 20-1 and the modified chain guide 30-1 are disposed at the upper position B. Of course, the modified chain guide body 20-1 and the modified chain guide 30-1 may also be disposed at the lower position A, while the chain guide body 20 and the chain guide 30 are disposed at the upper position B.
as described above, the timing chain system 100 according to the embodiment of the present invention includes the timing chain chamber unit 1, the timing chain chamber unit 1 having the elastic fixing force, the locking force, and the fin fixing force, the elastic fixing force being generated by the chain guide 30 and the chain guide body 20 contacting each other by the elastic restoring force; the locking force is generated by the chain guide 30 and the chain guide body 20 being in surface contact with each other through side surface contact; the fin fixing force is generated by the assembled chain guide 30 and the chain guide body 20 contacting each other, so that the timing transmission chain chamber unit 1 can be assembled without bolts; specifically, there is no need to use bolts (fastening force of bolts is reduced by vibration (e.g., shaking) of the engine), thereby reducing chain noise and satisfying the euro 6 regulations.
the foregoing exemplary embodiments are merely examples to enable those of ordinary skill in the art (hereinafter, referred to as those of ordinary skill in the art) to readily practice the present invention. The invention is therefore not limited to the exemplary embodiments described above and to the drawings, and the scope of the invention is therefore not limited to the exemplary embodiments described above. Accordingly, it will be understood by those skilled in the art that various substitutions, modifications and changes may be made without departing from the spirit and scope of the present invention as defined in the appended claims and also within the scope of the present invention.
Claims (10)
1. A timing drive chain chamber unit comprising:
A timing drive chain chamber disposed in front of a cylinder block and a cylinder head of the engine;
A chain guide in contact with the timing chain; and
A chain guide body integrally formed with the timing transmission chain chamber and generating a fixing force without bolts together with the chain guide,
The fixing force without bolts is elastic fixing force, locking force and fin fixing force, and the elastic fixing force is generated by the chain guide plate and the chain guide plate body which are in contact with each other through elastic restoring force; the locking force is generated by the chain guide and the chain guide body contacting each other through side surface contact; the rib fixing force is generated by the chain guide and the chain guide body which are assembled in contact with each other;
The chain guide body is formed at a lower position and an upper position of the timing transmission chain chamber, the chain guide body is provided in pair with the chain guide, and the chain guide body is disposed at the lower position and the upper position where the first timing chain and the second timing chain are located;
Wherein the chain guide body at the lower position and the upper position is composed of a contact surface, left and right fixing portions formed on left and right sides of the contact surface, and a groove formed on the contact surface, and
A chain guide combined with the chain guide body at the lower and upper positions, the chain guide being composed of an attachment surface contacting the contact surface, left and right pressing portions formed at left and right sides of the attachment surface, and a rib protruding at the attachment surface;
Or wherein the chain guide body formed at the lower position is composed of a contact surface, left and right fixing portions formed on left and right sides of the contact surface, and a groove formed on the contact surface,
a chain guide combined with the chain guide body formed at a lower position, the chain guide being composed of an attachment surface contacting the contact surface of the chain guide body, left and right pressing portions formed at left and right sides of the attachment surface, and a rib protruding at the attachment surface,
the improved chain guide body formed at the upper position is composed of a contact surface and left and right fixing portions formed at left and right sides of the contact surface,
An improved chain guide is combined with the improved chain guide body formed at an upper position, the improved chain guide being composed of an attachment surface contacting the improved chain guide body and left and right pressing portions formed at left and right sides of the attachment surface.
2. The timing drive chain chamber unit as recited in claim 1, wherein the groove is formed at the right fixing portion and the rib is formed at the right pressing portion.
3. The timing drive chain chamber unit as recited in claim 1, wherein said left and right pressing portions are shorter than said left and right fixing portions and generate an elastic fixing force,
the locking force is generated by a change in a contact surface between the left pressing portion and the left fixing portion, and
the rib is fitted in the groove, thereby generating a rib fixing force.
4. The timing drive chain chamber unit as recited in claim 1, wherein the variation in the contact surface is created by an inner concave surface of the left pressing portion and an outer convex surface of the left fixing portion.
5. The timing drive chain chamber unit as recited in claim 1, wherein the left and right pressing portions of the chain guide are shorter than the left and right fixing portions of the chain guide body and generate an elastic fixing force,
The locking force is generated by a change in the contact surface between the left pressing portion of the chain guide and the left fixing portion of the chain guide body,
The rib fixing force is generated by fitting the ribs of the chain guide into the grooves of the chain guide body, and
The left and right pressing portions of the improved chain guide are shorter than the left and right fixing portions of the improved chain guide body and generate a resilient fixing force, and the locking force is generated by a change in a contact surface between the left pressing portion of the improved chain guide and the left fixing portion of the improved chain guide body.
6. The timing drive chain chamber unit as recited in claim 5, wherein the change in the contact surface between the left pressing portion of the chain guide and the left fixing portion of the chain guide body is produced by an inner concave surface of the left pressing portion and an outer convex surface of the left fixing portion, and
the change in the contact surface between the left pressing portion of the improved chain guide and the left fixing portion of the improved chain guide body is produced by an inner concave surface of the left pressing portion and an outer convex surface of the left fixing portion.
7. a timing chain system, comprising:
A timing drive chain chamber provided in front of a cylinder head and a cylinder block of an engine, from which a high-pressure pump shaft, a crankshaft, and a camshaft protrude;
The first timing chain is connected with a high-pressure pump chain wheel assembled on a high-pressure pump shaft and a crankshaft chain wheel assembled on a crankshaft;
A second timing chain connected with the high pressure pump sprocket and a cam sprocket assembled on a camshaft; and
A chain guide body integrally formed with the timing chain chamber, and to which a chain guide supporting a first timing chain at an opposite side of a first tensioner mounted on the timing chain chamber to maintain tension of the first timing chain and a chain guide supporting a second timing chain at an opposite side of a second tensioner mounted on the timing chain chamber to maintain tension of the second timing chain are fitted to generate a fixing force without bolts;
the chain guide body is formed at a lower position and an upper position of the timing transmission chain chamber, the chain guide body is provided in pair with the chain guide, and the chain guide body is disposed at the lower position and the upper position where the first timing chain and the second timing chain are located;
wherein the chain guide body at the lower position and the upper position is composed of a contact surface, left and right fixing portions formed on left and right sides of the contact surface, and a groove formed on the contact surface, and
A chain guide combined with the chain guide body at the lower and upper positions, the chain guide being composed of an attachment surface contacting the contact surface, left and right pressing portions formed at left and right sides of the attachment surface, and a rib protruding at the attachment surface;
or wherein the chain guide body formed at the lower position is composed of a contact surface, left and right fixing portions formed on left and right sides of the contact surface, and a groove formed on the contact surface,
A chain guide combined with the chain guide body formed at a lower position, the chain guide being composed of an attachment surface contacting the contact surface of the chain guide body, left and right pressing portions formed at left and right sides of the attachment surface, and a rib protruding at the attachment surface,
The improved chain guide body formed at the upper position is composed of a contact surface and left and right fixing portions formed at left and right sides of the contact surface,
An improved chain guide is combined with the improved chain guide body formed at an upper position, the improved chain guide being composed of an attachment surface contacting the improved chain guide body and left and right pressing portions formed at left and right sides of the attachment surface.
8. The timing chain system according to claim 7, wherein the boltless fixing force is an elastic fixing force generated by an elastic restoring force of the chain guide and the chain guide body contacting each other, a locking force, and a fin fixing force; the locking force is generated by the chain guide and the chain guide body contacting each other through side surface contact; the rib fixing force is generated by the chain guide and the chain guide body contacting each other.
9. a timing chain system, comprising:
a timing drive chain chamber provided in front of a cylinder head and a cylinder block of an engine, from which a high-pressure pump shaft, a crankshaft, and a camshaft protrude;
The first timing chain is connected with a high-pressure pump chain wheel assembled on a high-pressure pump shaft and a crankshaft chain wheel assembled on a crankshaft;
a second timing chain connected with the high pressure pump sprocket and a cam sprocket assembled on a camshaft; and
a chain guide body integrally formed with the timing chain chamber, and to which a chain guide supporting a first timing chain at an opposite side of a first tensioner is fitted to generate a fixing force without bolts, wherein the first tensioner is mounted on the timing chain chamber to maintain tension of the first timing chain; and
an improved chain guide body integrally formed with the timing drive chain chamber, and an improved chain guide supporting a second timing chain at an opposite side of a second tensioner mounted on the timing drive chain chamber to maintain tension of the second timing chain is assembled to the improved chain guide body to generate a fixing force without bolts;
The chain guide body is formed at a lower position and an upper position of the timing transmission chain chamber, the chain guide body is provided in pair with the chain guide, and the chain guide body is disposed at the lower position and the upper position where the first timing chain and the second timing chain are located;
Wherein the chain guide body at the lower position and the upper position is composed of a contact surface, left and right fixing portions formed on left and right sides of the contact surface, and a groove formed on the contact surface, and
a chain guide combined with the chain guide body at the lower and upper positions, the chain guide being composed of an attachment surface contacting the contact surface, left and right pressing portions formed at left and right sides of the attachment surface, and a rib protruding at the attachment surface;
Or wherein the chain guide body formed at the lower position is composed of a contact surface, left and right fixing portions formed on left and right sides of the contact surface, and a groove formed on the contact surface,
a chain guide combined with the chain guide body formed at a lower position, the chain guide being composed of an attachment surface contacting the contact surface of the chain guide body, left and right pressing portions formed at left and right sides of the attachment surface, and a rib protruding at the attachment surface,
the improved chain guide body formed at the upper position is composed of a contact surface and left and right fixing portions formed at left and right sides of the contact surface,
an improved chain guide is combined with the improved chain guide body formed at an upper position, the improved chain guide being composed of an attachment surface contacting the improved chain guide body and left and right pressing portions formed at left and right sides of the attachment surface.
10. The timing chain system according to claim 9, wherein the bolt-less fixing force by the chain guide and the chain guide body is an elastic fixing force, a locking force, and a fin fixing force, the elastic fixing force being generated by the chain guide and the chain guide body contacting each other by an elastic restoring force; the locking force is generated by the chain guide and the chain guide body contacting each other through side surface contact; the rib fixing force is generated by the chain guide and the chain guide body contacting each other,
the bolt-less fixing force acting by the improved chain guide and the improved chain guide body is an elastic fixing force and a locking force, the elastic fixing force being generated by the improved chain guide and the improved chain guide body contacting each other by an elastic restoring force; the locking force is generated by the improved chain guide and the improved chain guide body providing side surface contact with each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20140151006 | 2014-11-03 | ||
| KR10-2014-0151006 | 2014-11-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106150688A CN106150688A (en) | 2016-11-23 |
| CN106150688B true CN106150688B (en) | 2019-12-06 |
Family
ID=55753957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510177826.XA Expired - Fee Related CN106150688B (en) | 2014-11-03 | 2015-04-15 | Timing drive chain chamber unit and timing chain system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106150688B (en) |
| DE (1) | DE102015104942A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425744A (en) * | 2018-04-02 | 2018-08-21 | 广西玉柴机器股份有限公司 | Engine chain drive system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10311395A (en) * | 1997-05-12 | 1998-11-24 | Tsubakimoto Chain Co | Chain slide-contact shoe member of transmission chain running guide device |
| CN1213752A (en) * | 1997-10-08 | 1999-04-14 | 本田技研工业株式会社 | Assembly structure of chain lead part |
| KR20040048068A (en) * | 2002-12-02 | 2004-06-07 | 현대자동차주식회사 | Chain guide for engine in vehicle |
| CN1831374A (en) * | 2005-03-09 | 2006-09-13 | 株式会社椿本链索 | Guide for transmission device |
| CN102220890A (en) * | 2010-04-14 | 2011-10-19 | 现代自动车株式会社 | Noise reduction device for timing chain of diesel engine |
| CN102734040A (en) * | 2011-03-30 | 2012-10-17 | 本田技研工业株式会社 | Spark ignition four-stroke engine for vehicle |
| CN203335761U (en) * | 2013-01-09 | 2013-12-11 | 广西玉柴机器股份有限公司 | Diesel engine chain guide rail |
-
2015
- 2015-03-31 DE DE102015104942.2A patent/DE102015104942A1/en not_active Ceased
- 2015-04-15 CN CN201510177826.XA patent/CN106150688B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10311395A (en) * | 1997-05-12 | 1998-11-24 | Tsubakimoto Chain Co | Chain slide-contact shoe member of transmission chain running guide device |
| CN1213752A (en) * | 1997-10-08 | 1999-04-14 | 本田技研工业株式会社 | Assembly structure of chain lead part |
| KR20040048068A (en) * | 2002-12-02 | 2004-06-07 | 현대자동차주식회사 | Chain guide for engine in vehicle |
| CN1831374A (en) * | 2005-03-09 | 2006-09-13 | 株式会社椿本链索 | Guide for transmission device |
| CN102220890A (en) * | 2010-04-14 | 2011-10-19 | 现代自动车株式会社 | Noise reduction device for timing chain of diesel engine |
| CN102734040A (en) * | 2011-03-30 | 2012-10-17 | 本田技研工业株式会社 | Spark ignition four-stroke engine for vehicle |
| CN203335761U (en) * | 2013-01-09 | 2013-12-11 | 广西玉柴机器股份有限公司 | Diesel engine chain guide rail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106150688A (en) | 2016-11-23 |
| DE102015104942A1 (en) | 2016-05-04 |
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