Friction-resistant timing chain guide rail

Abstract

The utility model discloses a friction-resistant timing chain guide rail which comprises a main rail body, a circular through hole is formed in the main rail body, and a transverse limiting communication groove is formed in the side end of the main rail body. The first clamping block is rotationally connected with the main rail body, the first clamping block is located at the end, close to the circular through hole, of the main rail body, and the second clamping block is rotationally connected with the main rail body and located at the end, away from the circular through hole, of the main rail body. The clamping blocks are arranged at the left end and the right end of the main rail body and can rotate on the main rail body, the clamping blocks are matched with the transverse limiting communication grooves, the guide rail can adapt to flexible self-adaptive adjustment, meanwhile, deviation of a chain can be prevented, and the stability and adaptability of the timing chain guide rail in the using process are guaranteed. The friction-resistant structural design is formed by the main rail body, the guide rail pieces and the lubricating through holes, the guide rail pieces can conduct anti-friction protection on the interior of the main rail body, and meanwhile lubricating oil can be added into the main rail body through the lubricating through holes to further strengthen the friction-resistant capacity.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain guide rail technical field, in particular to a kind of friction-resistant timing chain guide rail. BACKGROUND

[0002] The existing timing chain guide rail is prone to friction damage after long-term use, which can affect the normal operation of the engine.

[0003] A "engine timing chain guide rail" is disclosed in Chinese patent with application number "CN202223238779.X", which adopts the mode of mutual cooperation of support body and guide piece, and the support body plays a role in supporting the guide piece. The overall cooperation has a small structure, and the installation space required for installation is small. Compared with the installation mode of traditional single plastic part, the required installation space is small, the structure is stable and reliable, and the support body and the guide piece can be separated and replaced individually. However, the timing chain guide rail lacks wear-resistant structure design, which can cause the guide rail to be prone to friction damage, affecting the service life of the timing chain guide rail, and is not conducive to the normal use of the timing chain guide rail. SUMMARY

[0004] The utility model aims at at least solving one of the technical problems existing in the prior art, providing a kind of friction-resistant timing chain guide rail, and the clamping block is arranged at the left and right ends of main rail body, clamping block can rotate on main rail body, cooperate with transverse limit communication groove, so that guide rail can be flexible and self-adapting adjustment, while the deviation of chain can be prevented, the stability and adaptability of timing chain guide rail during use are ensured;Friction-resistant structure design is formed by main rail body, guide piece and lubricating through hole, guide piece can prevent friction protection inside main rail body, and lubricating oil can be added to the inside to further strengthen the friction resistance through the lubricating through hole.

[0005] The utility model also provides a kind of friction-resistant timing chain guide rail with the above, comprising: main rail body, the main rail body, the main rail body is provided with circular through hole, and the side end of the main rail body is provided with transverse limit communication groove;First clamping block and second clamping block, the first clamping block is rotatably connected with main rail body, and the first clamping block is located at one end of main rail body close to circular through hole, and the second clamping block is rotatably connected with main rail body, and the second clamping block is located at one end of main rail body away from circular through hole.

[0006] According to the utility model, a kind of friction-resistant timing chain guide rail, the inside of the main rail body is provided with guide piece, and the guide piece is fixedly connected to the upper inner wall of main rail body. The friction resistance of the timing chain guide rail is improved.

[0007] According to the present invention, a friction-resistant timing chain guide rail has a first protrusion fixedly connected to the left inner wall of the main rail body, and a second protrusion fixedly connected to the right inner wall of the main rail body. This facilitates the positioning and installation of the timing chain guide rail.

[0008] According to the present invention, a friction-resistant timing chain guide rail has reinforcing ribs fixedly connected to the inner side wall of the main rail body, and the reinforcing ribs are perpendicular to the inner side wall of the main rail body. This makes the internal structure of the timing chain guide rail more stable and robust.

[0009] According to the present invention, a friction-resistant timing chain guide rail includes a lubrication through-hole located between a circular through-hole and a transverse limiting groove. This facilitates the addition of lubricating oil and enhances the friction resistance of the timing chain guide rail.

[0010] According to the present invention, a friction-resistant timing chain guide rail has an oil outlet hole at the upper end of the main rail body, which is connected to the interior of the main rail body. This facilitates the outflow of engine oil from inside the timing chain guide rail and prevents oil accumulation inside the timing chain guide rail.

[0011] According to the present invention, a friction-resistant timing chain guide rail has a slot hole at the upper end of the main rail body, the slot hole being located at the end of the main rail body away from the circular through hole. This facilitates the stable installation of the timing chain guide rail.

[0012] According to the present invention, in a friction-resistant timing chain guide, both the first and second locking blocks are located inside the main rail body, and the left and right side surfaces of the first and second locking blocks abut against the inner side wall of the main rail body. This makes the internal structure of the timing chain guide rail compact and stable.

[0013] Beneficial effects:

[0014] 1. Compared with the prior art, this friction-resistant timing chain guide has locking blocks at both ends of the main rail body. The locking blocks can rotate on the main rail body and, together with the transverse limiting connecting groove, enable the guide to adapt flexibly and self-adjust. At the same time, it can prevent the chain from deviating, ensuring the stability and adaptability of the timing chain guide during use.

[0015] 2. Compared with the existing technology, this friction-resistant timing chain guide rail has a friction-resistant structure design formed by the main rail body, guide rail plate and lubrication through hole. The guide rail plate can protect the inside of the main rail body from friction, and lubricating oil can be added to the inside through the lubrication through hole to further enhance the friction resistance. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is an exploded structural diagram of a friction-resistant timing chain guide rail according to the present invention.

[0018] Figure 2 This is a side view of the friction-resistant timing chain guide rail of this utility model.

[0019] Figure 3 This is a bottom view schematic diagram of the friction-resistant timing chain guide rail of this utility model.

[0020] Legend:

[0021] 1. Main rail body; 2. Circular through hole; 3. Lateral limiting and connecting groove; 4. Lubrication through hole; 5. Oil outlet hole; 6. Slot hole; 7. First locking block; 8. Second locking block; 9. First protrusion; 10. Second protrusion; 11. Reinforcing rib; 12. Guide rail plate. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1 , Figure 2 and Figure 3 This utility model discloses a friction-resistant timing chain guide rail, which includes a main rail body 1. The main rail body 1 has a circular through hole 2 and a transverse limiting and connecting groove 3 on its side end. A guide plate 12 is disposed inside the main rail body 1 and is fixedly connected to the upper inner wall of the main rail body 1. A first protrusion 9 is fixedly connected to the left inner wall of the main rail body 1, a second protrusion 10 is fixedly connected to the right inner wall of the main rail body 1, and reinforcing ribs 11 are fixedly connected to the side inner walls of the main rail body 1. The reinforcing rib 11 is perpendicular to the inner side wall of the main rail body 1. The main rail body 1 is provided with a lubrication through hole 4, which is located between the circular through hole 2 and the transverse limiting connecting groove 3. The main rail body 1 is provided with a lubrication through hole 4, which is located between the circular through hole 2 and the transverse limiting connecting groove 3. The upper end of the main rail body 1 is provided with an oil outlet hole 5, which is connected to the interior of the main rail body 1. The upper end of the main rail body 1 is provided with a slot hole 6, which is located at the end of the main rail body 1 away from the circular through hole 2.

[0024] Specifically, the circular through hole 2 serves as a mounting hole, and the main rail body 1 is fixed to the engine block or cylinder head with bolts to ensure the overall stability of the guide rail. The lateral limiting connecting groove 3 is used to limit the lateral displacement of the chain. The guide rail plate 12 is fixed to the inner wall of the main rail body 1 and directly contacts the chain. Its material is usually high wear-resistant engineering plastic, and the surface can be coated with PTFE to reduce the coefficient of friction. The arc-shaped contour of the guide rail plate 12 matches the chain, evenly distributing the contact pressure during chain operation and reducing local wear. The first protrusion 9 and the second protrusion 10 are raised structures on the left and right inner walls of the main rail body 1, used to limit the longitudinal displacement of the chain and prevent... When the chain moves back and forth at high speed, the reinforcing rib 11 is a rib perpendicular to the side wall of the main rail body 1, which can significantly improve the bending stiffness and impact resistance of the guide rail and avoid deformation caused by engine vibration or high load. The lubrication through hole 4 is connected to the engine oil passage, which facilitates the introduction of lubricating oil. The lubricating oil is transported to the oil outlet hole 5 through the internal oil passage of the main rail body 1 and evenly sprayed onto the surface of the guide rail plate 12 to form a lubricating film to reduce dry friction between the chain and the guide rail. The through design of the transverse limiting connecting groove 3 allows the lubricating oil to spread along the groove and cover a larger contact area. The slot hole 6 can be used to install the probe of the wear sensor to realize the monitoring of wear status.

[0025] Reference Figure 1 , Figure 2 and Figure 3 The first locking block 7 and the second locking block 8 are rotatably connected to the main rail body 1 and are located at the end of the main rail body 1 near the circular through hole 2. The second locking block 8 is rotatably connected to the main rail body 1 and is located at the end of the main rail body 1 away from the circular through hole 2. Both the first locking block 7 and the second locking block 8 are located inside the main rail body 1, and the left and right side surfaces of the first locking block 7 and the second locking block 8 abut against the inner side wall of the main rail body 1.

[0026] Specifically, the first locking block 7 and the second locking block 8 are connected to the main rail body 1 via a rotating shaft, allowing the first locking block 7 and the second locking block 8 to swing freely within a certain angle. When the chain becomes loose due to temperature changes or wear, the first locking block 7 and the second locking block 8 are rotated inward or outward under the pressure of the chain to adjust the contact pressure between the guide rail and the chain in real time, so as to avoid the chain being too loose or too tight. The left and right surfaces of the first locking block 7 and the second locking block 8 abut against the inner wall of the main rail body 1, limiting their swing amplitude and preventing excessive deviation from interfering with the chain trajectory.

[0027] Working principle: The chain runs along the trajectory of the transverse limiting connecting groove 3. The guide rail plate 12 provides a low-friction sliding surface. The first protrusion 9 and the second protrusion 10 restrict longitudinal displacement. When the chain tension changes, the first locking block 7 and the second locking block 8 swing to adaptively adjust the contact angle between the guide rail and the chain, maintaining stable tension. Lubricating oil enters from the lubrication through hole 4, is sprayed out from the oil outlet hole 5 through the internal oil passage, covers the surface of the guide rail plate 12, and diffuses to the chain through the transverse limiting connecting groove 3. The rigid structure of the reinforcing rib 11 and the main rail body 1 can resist vibration and impact to ensure that the guide rail does not deform during long-term operation.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A friction-resistant timing chain guide, characterized by, Include: The main rail body (1), the main rail body (1) is provided with a circular through hole (2), and the side end of the main rail body (1) is provided with a transverse limiting communication groove (3); The first clamping block (7) and the second clamping block (8), the first clamping block (7) is rotatably connected with the main rail body (1), the first clamping block (7) is located at one end of the main rail body (1) close to the circular through hole (2), the second clamping block (8) is rotatably connected with the main rail body (1), and the second clamping block (8) is located at one end of the main rail body (1) away from the circular through hole (2).

2. A friction-resistant timing chain guide as set forth in claim 1, characterized in that, The inside of the main rail body (1) is provided with a guide rail piece (12), and the guide rail piece (12) is fixedly connected to the upper inner wall of the main rail body (1).

3. A friction-resistant timing chain guide as set forth in claim 1, characterized in that, The left inner wall of the main rail body (1) is fixedly connected with the first protrusion (9), and the right inner wall of the main rail body (1) is fixedly connected with the second protrusion (10).

4. A friction-resistant timing chain guide as set forth in claim 1, characterized in that, The side inner wall of the main rail body (1) is fixedly connected with the reinforcing rib (11), and the reinforcing rib (11) is perpendicular to the side inner wall of the main rail body (1).

5. A friction-resistant timing chain guide as set forth in claim 1, characterized in that, The main rail body (1) is provided with a lubricating through hole (4), and the lubricating through hole (4) is located between the circular through hole (2) and the transverse limiting communication groove (3).

6. A friction-wear resistant timing chain guide rail according to claim 1, wherein The upper end of the main rail body (1) is provided with an oil outlet hole (5), and the oil outlet hole (5) is communicated with the inside of the main rail body (1).

7. A friction-resistant timing chain guide as in claim 1 wherein, The upper end of the main rail body (1) is provided with a clamping groove hole (6), and the clamping groove hole (6) is located at one end of the main rail body (1) away from the circular through hole (2).

8. A friction-wear resistant timing chain guide rail according to claim 1, wherein The first clamping block (7) and the second clamping block (8) are located in the inside of the main rail body (1), and the left and right side surfaces of the first clamping block (7) and the second clamping block (8) are in abutment with the side inner wall of the main rail body (1).

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