Guide rail, timing chain transmission system and vehicle
By introducing damping structural parts into the guide rails, the buffer chain excites the guide rails, the vibration noise problem in the prior art is solved, and the vibration and noise reduction effect of the guide rails is achieved.
Patent Information
- Application Number
- CN202422049236.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The prior art is difficult to effectively reduce the chain's excitation effect on the guide rail, resulting in vibration noise problems.
A guide rail is designed, including a guide strip assembly, a guide rail bracket and a damping structural member. The damping structural member is arranged between the guide strip assembly and the guide rail bracket and is integrated with it to provide a buffering effect, thereby reducing the excitation of the chain to the guide rail.
Through the buffering effect of the damping structural parts, the chain excitation to the guide rail is effectively reduced, and the effect of vibration and noise reduction is achieved.
Smart Images
Figure CN222887176U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of engines, and particularly to a guide rail, a timing chain drive system, and a vehicle. Background Art
[0002] As a way of engine timing drive, with the increasing demand of consumers for the noise, vibration, and harshness (Noise, Vibration, Harshness, abbreviated as NVH) of automobiles, higher requirements are also put forward for the noise of the chain system. During the movement of the chain, the chain will generate an excitation effect on the guide rail (guiding the chain to move on the correct path), thus generating vibration noise. At present, there is a lack of a solution to reduce the excitation of the chain on the guide rail. Summary of the Utility Model
[0003] This application discloses a guide rail, a timing chain drive system, and a vehicle. The guide rail can reduce the excitation of the chain on the guide rail, thereby achieving vibration reduction and noise reduction.
[0004] To achieve the above object, this application provides the following technical solutions:
[0005] In a first aspect, this application provides a guide rail, which includes a guide bar assembly, a guide rail bracket, and a damping structure member. The damping structure member is disposed between the guide bar assembly and the guide rail bracket and is integrally connected to the guide bar assembly and the guide rail bracket, and is used to provide a buffering effect for the guide bar assembly and the guide rail bracket;
[0006] A guiding surface is provided on a side of the guide bar assembly facing away from the guide rail bracket for guiding the chain.
[0007] The above-mentioned guide rail reduces the excitation of the chain on the guide rail through the damping structure member, achieving vibration reduction and noise reduction. Specifically, the guide rail includes a guide bar assembly, a guide rail bracket, and a damping structure member integrally connected between the guide bar assembly and the guide rail bracket. During the operation of the chain, the chain forms an excitation on the guiding surface on the side of the guide bar assembly facing away from the guide rail bracket. The damping structure member can attenuate the transmission of the excitation to the guide bar assembly and the guide rail bracket, playing a buffering role, thereby reducing the excitation of the chain on the guide rail and achieving the purpose of vibration reduction and noise reduction.
[0008] In some embodiments, the guide bar assembly includes a guide bar body and a guide bar fixing plate, and the guide bar fixing plate is disposed between the damping structure member and the guide bar body.
[0009] In some embodiments, the damping structure member is made of vulcanized rubber.
[0010] In some embodiments, the damping structure member is integrally connected to the guide bar fixing plate and the guide rail bracket through a vulcanization process.
[0011] In some embodiments, the guide bar body and the guide bar fixing plate are detachably connected.
[0012] In some embodiments, the guide bar body and the guide bar fixing plate are snap-connected.
[0013] In some embodiments, the material of the guide bar body is plastic.
[0014] In some embodiments, the material of the guide bar fixing plate is metal.
[0015] In a second aspect, the present application provides a timing chain drive system, including a chain, a sprocket, and a guide rail as described in the first aspect. The chain is in transmission connection with the sprocket, and the chain is in contact connection with the guide bar of the guide rail.
[0016] In a third aspect, the present application provides a vehicle, including the timing chain drive system as described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of a guide rail provided by an embodiment of the present application;
[0018] Reference numerals: 1, guide bar assembly; 2, guide rail bracket; 3, damping structural member; 11, guide bar body; 12, guide bar fixing plate. DETAILED DESCRIPTION
[0019] First, the application scenario is introduced. The vibration and noise excitation sources of the timing chain drive system mainly consist of two parts: internal vibration and external vibration. The internal vibration excitation refers to the dynamic excitation caused by the meshing impact and polygon effect between the chain and the sprocket during operation. The external vibration excitation refers to the excitation of the chain system caused by external factors such as crankshaft speed fluctuation, camshaft torque fluctuation, and the excitation of the hydraulic tensioner on the guide rail. The excitation is transmitted through paths such as the guide rail and the sprocket bearing, thus causing noise problems.
[0020] Based on the above problems, the present application provides a guide rail, a timing chain drive system, and a vehicle. The guide rail can reduce the excitation of the chain on the guide rail, thereby achieving vibration and noise reduction.
[0021] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may represent A or B; "and / or" in the text is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.
[0022] Among them, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as implying or suggesting relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0023] In a first aspect, as Figure 1 shown, the present application provides a guide rail, which includes a guide bar assembly 1, a guide rail bracket 2, and a damping structure member 3. The damping structure member 3 is disposed between the guide bar assembly 1 and the guide rail bracket 2 and is integrally connected to the guide bar assembly 1 and the guide rail bracket 2 for providing a buffering effect for the guide bar assembly 1 and the guide rail bracket 2; a guide surface is provided on the side of the guide bar assembly 1 facing away from the guide rail bracket 2 for guiding the chain.
[0024] The above-mentioned guide rail reduces the excitation effect of the chain on the guide rail through the damping structure member 3, achieving vibration reduction and noise reduction. Specifically, the guide rail includes a guide bar assembly 1, a guide rail bracket 2, and a damping structure member 3 integrally connected between the guide bar assembly 1 and the guide rail bracket 2. During the operation of the chain, the chain forms an excitation on the guide surface on the side of the guide bar assembly 1 facing away from the guide rail bracket 2. The damping structure member 3 can attenuate the transmission of the excitation to the guide bar assembly 1 and the guide rail bracket 2, playing a buffering role, thereby reducing the excitation of the chain on the guide rail and achieving the purpose of vibration reduction and noise reduction.
[0025] In some embodiments, the guide bar assembly 1 includes a guide bar body 11 and a guide bar fixing plate 12. The guide bar fixing plate 12 is disposed between the damping structure member 3 and the guide bar body 11. The guide bar fixing plate 12 can effectively fix the position of the guide surface on the side of the guide bar body 11 facing away from the guide rail bracket 2, which is beneficial to providing an accurate guiding effect for the chain and avoiding the position movement of the guide bar body 11 under the impact.
[0026] In some embodiments, the damping structural member 3 is made of vulcanized rubber. During the operation of the chain, the impact of the chain on the guide rail can be effectively absorbed by the vulcanized rubber, thereby improving the impact noise and reducing the vibration. At the same time, the vulcanized rubber material will not reduce the transmission efficiency.
[0027] In some embodiments, the damping structural member 3 is integrally connected to both the guide bar fixing plate 12 and the guide rail bracket 2 through a vulcanization process. Vulcanized rubber itself has elasticity, which can slow down the impact of the chain on the guide rail during the transmission process. The present application reduces the vibration response by improving the transmission path of the chain excitation, so as to achieve the purpose of vibration reduction and noise reduction.
[0028] In some embodiments, the guide bar body 11 and the guide bar fixing plate 12 are detachably connected so as to replace and repair the guide bar body 11.
[0029] In some embodiments, the guide bar body 11 and the guide bar fixing plate 12 are snap-connected. It can be understood that the connection method can also be bonding, bolt connection, screw connection, etc.
[0030] In some embodiments, the guide bar body 11 is made of plastic. The plastic material has good impact resistance and heat resistance, and has a small mass, which is beneficial to achieving the purpose of weight reduction.
[0031] In some embodiments, the guide bar fixing plate 12 is made of metal. The metal material can ensure certain mechanical properties of the guide rail, such as stiffness and strength.
[0032] In a second aspect, the present application provides a timing chain drive system, including a chain, a sprocket, and a guide rail as in the first aspect. The chain is in transmission connection with the sprocket, and the chain is in contact connection with the guide bar of the guide rail. Since the timing chain drive system includes all the technical features of the guide rail, therefore, the timing chain drive system also includes all the beneficial effects of the guide rail, which will not be elaborated here.
[0033] In a third aspect, the present application provides a vehicle, including the timing chain drive system as in the second aspect. Since the vehicle includes all the technical features of the timing chain drive system, therefore, the vehicle also includes all the beneficial effects of the timing chain drive system, which will not be elaborated here.
[0034] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.
Claims
1. A guide rail, characterized in that: It comprises a guide bar assembly, a guide rail bracket and a damping structure, wherein the damping structure is arranged between the guide bar assembly and the guide rail bracket, and is integrally connected with the guide bar assembly and the guide rail bracket, and is used to provide a buffering effect for the guide bar assembly and the guide rail bracket; A guide surface is provided on the side of the guide bar assembly facing away from the guide rail bracket, which is used to provide a guiding function for the chain.
2. The guide rail according to claim 1, characterized in that: The guide bar assembly comprises a guide bar body and a guide bar fixing plate, and the guide bar fixing plate is arranged between the damping structure and the guide bar body.
3. The guide rail according to claim 2, characterized in that: The material of the damping structural component is vulcanized rubber.
4. The guide rail according to claim 3, characterized in that: The damping structure is integrally connected with the guide bar fixing plate and the guide rail bracket through a vulcanization process.
5. The guide rail according to claim 2, characterized in that: The guide bar body and the guide bar fixing plate are detachably connected.
6. The guide rail according to claim 5, characterized in that The guide bar body and the guide bar fixing plate are clamped together.
7. The guide rail according to claim 2, characterized in that: The material of the guide bar body is plastic.
8. The guide rail according to claim 2, characterized in that: The guide bar fixing plate is made of metal.
9. A timing chain transmission system, characterized in that: It comprises a chain, a sprocket and a guide rail as described in any one of claims 1 to 8, wherein the chain is drivingly connected to the sprocket, and the chain is contact-connected to a guide bar of the guide rail.
10. A vehicle, characterized in that: Comprising the timing chain drive system as claimed in claim 9.