Timing tooth-shaped chain of engine system

Abstract

A timing tooth-shaped chain of an engine system relates to the technical field of chain transmission and comprises a chain body, the chain body comprises chain plates, guide plates and pins, the guide plates are arranged at the front end and the rear end of the chain body side by side, and a plurality of rows of chain plates are distributed between the guide plates at the front end and the rear end. The chain plates in adjacent rows are staggered, the chain plates and the guide plates in adjacent rows are staggered, the guide plates and the chain plates are connected in series through pins to form a chain body, the chain plates are tooth-shaped chain plates, the top ends of the tooth-shaped chain plates are provided with concave arcs, and the middles of the tooth-shaped chain plates are provided with straight notches. Abrasion of the chain body to the guide rail can be effectively reduced, and light weight of the chain is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of chain transmission, and in particular relates to a timing toothed chain of an engine system. Background Art

[0002] With the rapid development of the engine industry, chains have become personalized and diversified, and the application of engine toothed timing chains has become more and more extensive. At present, the existing products mainly use the straight edge of the chain plate back without a straight notch in the middle, but the products in this state generally have a large contact area with the guide rail in the chain system layout, the guide rail surface wears quickly, and the chain is relatively heavy. The energy loss of the chain in the system operation is large, which cannot meet the long-term operation of the entire engine system. Utility Model Content

[0003] The invention discloses a timing toothed chain of an engine system, aiming at solving the problems mentioned in the background technology part.

[0004] To achieve the above purpose, the technical solution of this novel invention is:

[0005] A timing toothed chain for an engine system comprises a chain body, wherein the chain body comprises chain plates, guide plates and pins, wherein the guide plates are arranged side by side at the front and rear ends of the chain body, and multiple rows of chain plates are distributed between the front and rear end guide plates, and the chain plates in adjacent rows and the chain plates and guide plates in adjacent rows are staggered with each other, and the guide plates and chain plates are connected in series by pins to form the chain body, and the chain plates are toothed chain plates, and the top end of the toothed chain plates is provided with an inner concave arc, and the middle part of the toothed chain plates is provided with a straight notch.

[0006] Preferably, the concave arc is arranged in the middle of the top end of the toothed chain plate, the top end of the toothed chain plate on both sides of the concave arc is a linear structure, and the shoulder of the toothed chain plate outside the linear structure is an arc structure.

[0007] Preferably, the height of the top end of the guide plate is lower than the height of the linear structure.

[0008] Preferably, the thickness of the guide plate is lower than the thickness of the chain plate.

[0009] Preferably, both ends of the pin are interference fit with the mounting holes of the guide plate, and the pin is clearance fit with the mounting holes of the chain plate.

[0010] Preferably, the pitch between the chain plates is 6.35-12.70 mm.

[0011] The beneficial effects of the timing toothed chain of the engine system of the present invention are as follows:

[0012] The new model changes the straight edge on the back of the chain plate into an inward concave arc, and opens a straight groove in the middle of the chain plate. Under the premise of ensuring the strength of the chain, the low friction performance is retained and the weight of the chain plate is reduced. The height of the guide plate is lower than the chain plate, which can avoid the contact between the guide plate and the guide rail, further reducing the friction on the guide rail. By improving the structure of the guide plate and the chain plate, the new model achieves the effect of low friction with the guide rail and lightweight chain, ensuring the long-term operation of the chain body in the chain system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : Schematic diagram of the timing chain structure of the new type;

[0014] Figure 2 : Schematic diagram of the new decomposition;

[0015] Figure 3 : Schematic diagram of chain plate force analysis comparison;

[0016] 1. Pin; 2. Chain plate; 3. Guide plate; 4. Concave arc; 5. Straight slot. DETAILED DESCRIPTION

[0017] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0018] The following embodiments may be understood as a part of a local structure or method that is expressed separately in the present invention, or may be understood as a combination of the embodiments to explain the connotation of a larger structure or method of the present invention.

[0019] Example 1

[0020] An engine system timing tooth chain, such as Figure 1 , 2 As shown, it includes a chain body, which includes chain plates 2, guide plates 3, and pins 1. The guide plates 3 are arranged side by side at the front and rear ends of the chain body, and multiple rows of chain plates 2 are distributed between the front and rear end guide plates 3. The chain plates 2 in adjacent rows and the chain plates 2 and guide plates in adjacent rows are staggered with each other. The guide plates and chain plates are connected in series by pins to form the chain body. The chain plate 2 is a toothed chain plate, and the top of the toothed chain plate is provided with an inner concave arc 4, and the middle of the toothed chain plate is provided with a straight notch 5.

[0021] In this embodiment, the concave arc and the straight notch can both reduce the weight of the chain body. At the same time, the concave arc can reduce the contact area between the chain plate and the guide rail, thereby reducing the wear on the guide rail.

[0022] Example 2

[0023] like Figure 1 , 2 As shown, the concave arc 4 is arranged at the middle of the top of the toothed chain plate, the top of the toothed chain plate on both sides of the concave arc 4 is a linear structure, and the shoulder of the toothed chain plate outside the linear structure is an arc structure.

[0024] Example 3

[0025] like Figure 1 As shown, the height of the top end of the guide plate is lower than the height of the linear structure, so as to avoid the top end of the guide plate from contacting the guide rail, thereby further reducing the friction on the guide rail.

[0026] Example 4

[0027] like Figure 1 As shown, the thickness of the guide plate is lower than the thickness of the chain plate, which reduces the weight of the chain while ensuring the strength of the chain.

[0028] Example 5

[0029] like Figure 1 As shown, both ends of the pin 1 are interference fit with the mounting holes of the guide plate 3, and the pin is clearance fit with the mounting holes of the chain plate 2.

[0030] like Figure 1 As shown, the pitch between the chain plates 2 is 6.35-12.70 mm.

[0031] The new model changes the straight edge on the back of the chain plate into an inward concave arc, and opens a straight groove in the middle of the chain plate. Under the premise of ensuring the strength of the chain, the low friction performance is retained and the weight of the chain plate is reduced. The height of the guide plate is lower than the chain plate, which can avoid the contact between the guide plate and the guide rail, further reducing the friction on the guide rail. By improving the structure of the guide plate and the chain plate, the new model achieves the effect of low friction with the guide rail and lightweight chain, ensuring the long-term operation of the chain body in the chain system.

Claims

1. A timing toothed chain for an engine system, characterized in that: it comprises a chain body, the chain body comprises chain plates, guide plates, and pins, the guide plates are arranged side by side at the front and rear ends of the chain body, multiple rows of chain plates are distributed between the front and rear end guide plates, adjacent rows of chain plates and adjacent rows of chain plates and guide plates are staggered, the guide plates and chain plates are connected in series by pins to form the chain body, the chain plates are toothed chain plates, the top of the toothed chain plates are provided with an inner concave arc, and the middle of the toothed chain plates is provided with a straight notch.

2. The engine system timing toothed chain according to claim 1, characterized in that: The concave arc is arranged at the middle of the top of the toothed chain plate, the top of the toothed chain plate on both sides of the concave arc is a linear structure, and the shoulder of the toothed chain plate outside the linear structure is an arc structure.

3. The engine system timing toothed chain according to claim 2, characterized in that: The height of the top end of the guide plate is lower than the height of the linear structure.

4. The engine system timing toothed chain according to claim 3, characterized in that: The thickness of the guide plate is lower than the thickness of the chain plate.

5. The engine system timing toothed chain according to claim 4, characterized in that: The two ends of the pin are interference fit with the mounting holes of the guide plate, and the pin is clearance fit with the mounting holes of the chain plate.

6. The engine system timing toothed chain according to claim 5, characterized in that: The pitch between the chain plates is 6.35-12.70 mm.

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