Engine timing chain guide

Abstract

The utility model discloses an engine timing chain guide rail, including base, skeleton and guide rail piece, the base is fixed in the engine shell, the skeleton is located between base and guide rail piece, the guide rail piece is used for guiding timing chain, the base is including installation portion and support portion, the installation portion is equipped with first bolt and tensioning oil cylinder, the tensioning oil cylinder is articulated in installation portion through first bolt, the support portion is equipped with second bolt, the skeleton one end is covered in second bolt, the skeleton other end is covered in third bolt, the third bolt is fixed in tensioning oil cylinder output shaft, the guide rail piece bottom both sides are equipped with a plurality of clamping blocks, and the clamping block is connected in the skeleton, the utility model discloses an engine timing chain guide rail, adds base, and sets up tensioning oil cylinder on the base, makes tensioning oil cylinder can push skeleton and rotate around second bolt, and then adjusts timing chain tensioning force, and skeleton and guide rail piece are for inserting and fixed, and are easy to replace.

Description

Technical Field

[0001] This utility model relates to timing chain technology, specifically an engine timing chain guide rail. Background Technology

[0002] The timing sprocket and chain system is a very important component of the engine. The smooth and continuous high-speed operation of the chain is closely related to the function of the chain guide. The chain guide consists of a frame and a guide surface, which guides the smooth and stable movement of the chain.

[0003] However, existing chain guides are fixed to the engine by the frame, making it impossible to adjust the tension. This makes it difficult to provide a stable tension for the chain, resulting in chain skipping or excessive tightness that accelerates chain wear. Utility Model Content

[0004] To address the shortcomings of the prior art, this invention provides an engine timing chain guide rail capable of adjusting the timing chain tension.

[0005] To achieve the above technical objectives, this utility model adopts the following technical solution: an engine timing chain guide rail, comprising a base, a frame, and a guide rail component. The base is fixed to the engine housing, the frame is located between the base and the guide rail component, and the guide rail component is used to guide the timing chain. The base includes a mounting part and a support part. The mounting part is provided with a first pin and a tensioning cylinder. The tensioning cylinder is hinged to the mounting part through the first pin. The support part is provided with a second pin. One end of the frame is sleeved on the second pin, and the other end of the frame is sleeved on a third pin. The third pin is fixed to the output shaft of the tensioning cylinder. Several locking blocks are provided on both sides of the bottom of the guide rail component, and the locking blocks are engaged with the frame.

[0006] Preferably, the frame has a slot in the middle, and reinforcing plates are uniformly arranged in the slot.

[0007] Preferably, the guide rail component has limiting blocks at both ends of its bottom, and the frame has limiting holes at both ends of its top, with the limiting blocks being inserted into the limiting holes.

[0008] Preferably, the base is provided with a plurality of positioning holes, and the bottom of the frame is provided with a plurality of positioning blocks, which are inserted into and fitted into the positioning holes.

[0009] Preferably, the support, frame, and guide rail are all arc-shaped.

[0010] Preferably, the cross-section of the guide rail is U-shaped.

[0011] In summary, this utility model achieves the following technical effects:

[0012] The engine timing chain guide of this utility model adds a base and installs a tensioning cylinder on the base, so that the tensioning cylinder can push the frame to rotate around the second pin, thereby adjusting the timing chain tension. The frame and guide rail are fixed by plugging and are easy to replace. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the engine timing chain guide rail of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the base of the engine timing chain guide rail of this utility model;

[0015] Figure 3 This is a structural schematic diagram of the fixing bracket for the engine timing chain guide rail of this utility model;

[0016] Explanation of the reference numerals in the accompanying drawings: 1. Base; 2. Frame; 3. Guide rail; 4. Tensioning cylinder; 5. First pin; 6. Second pin; 7. Limiting block; 8. Hollow groove; 9. Reinforcing plate; 10. Third pin; 11. Locking block; 12. Mounting part; 13. Positioning block. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] Example 1:

[0024] like Figure 1 As shown in Figure 3, an engine timing chain guide includes a base 1, a frame 2, and a guide rail 3. The base 1 is fixed to the engine housing, and the frame 2 is located between the base 1 and the guide rail 3. The guide rail 3 is used to guide the timing chain. The base 1 includes a mounting part 12 and a support part. The mounting part 12 is provided with a first pin 5 and a tensioning cylinder 4. The tensioning cylinder 4 is hinged to the mounting part 12 through the first pin 5. The support part is provided with a second pin 6. One end of the frame 2 is sleeved on the second pin 6, and the other end of the frame 2 is sleeved on a third pin. The third pin is fixed to the output shaft of the tensioning cylinder 4. The guide rail 3 has several locking blocks 11 on both sides of its bottom, and the locking blocks 11 are engaged with the frame 2.

[0025] The bottom of the base 1 can be provided with several protrusions, and the protrusions are provided with bolt holes. The protrusions and the base 1 can be fixed to the engine housing by fixing bolts.

[0026] In this embodiment, the engine timing chain guide rail is equipped with a base 1, and a tensioning cylinder 4 is installed on the base 1, so that the tensioning cylinder 4 can push the frame 2 to rotate around the second pin 6, thereby adjusting the timing chain tension. The frame 2 and the guide rail 3 are fixed by plugging, which is easy to replace.

[0027] The frame 2 has a hollow groove 8 in the middle, and reinforcing plates 9 are evenly arranged in the hollow groove 8; this arrangement can reduce the weight of the frame 2 without affecting its strength.

[0028] The guide rail component 3 has limiting blocks 7 at both ends of its bottom, and the frame 2 has limiting holes at both ends of its top. The limiting blocks 7 are inserted into the limiting holes. The setting of the limiting blocks 7 and the limiting holes can facilitate the stable fixing of the guide rail component 3 to the frame 2.

[0029] The base 1 is provided with several positioning holes, and the bottom of the frame 2 is provided with several positioning blocks 13 evenly distributed, and the positioning blocks 13 are inserted into the positioning holes.

[0030] The support, frame 2, and guide rail 3 are all arc-shaped.

[0031] The cross-section of the guide rail component 3 is U-shaped.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. An engine timing chain guide rail, characterized in that, The device includes a base, a frame, and a guide rail. The base is fixed to the engine housing. The frame is located between the base and the guide rail. The guide rail is used to guide the timing chain. The base includes a mounting part and a support part. The mounting part is provided with a first pin and a tensioning cylinder. The tensioning cylinder is hinged to the mounting part through the first pin. The support part is provided with a second pin. One end of the frame is fitted onto the second pin, and the other end of the frame is fitted onto a third pin. The third pin is fixed to the output shaft of the tensioning cylinder. Several locking blocks are provided on both sides of the bottom of the guide rail, and the locking blocks are engaged with the frame.

2. The engine timing chain guide rail according to claim 1, characterized in that, The frame has a hollow groove in the middle, and reinforcing plates are evenly arranged in the hollow groove.

3. The engine timing chain guide rail according to claim 1, characterized in that, The guide rail component has limiting blocks at both ends of its bottom, and the frame has limiting holes at both ends of its top. The limiting blocks are inserted into the limiting holes.

4. The engine timing chain guide rail according to claim 1, characterized in that, The base is provided with several positioning holes, and the bottom of the frame is provided with several positioning blocks evenly distributed, the positioning blocks being inserted into the positioning holes.

5. The engine timing chain guide rail according to claim 1, characterized in that, The support, frame, and guide rail are all arc-shaped.

6. The engine timing chain guide rail according to claim 1, characterized in that, The cross-section of the guide rail component is U-shaped.

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