Vibration and noise reduction device for gasoline engine

Abstract

The vibration and noise reduction device for the gasoline engine comprises a rubber lantern ring, side pieces are symmetrically arranged at the upper end and the lower end of the rubber lantern ring, threaded columns are fixed to the outer surfaces of the side pieces, a buffering assembly is arranged in the rubber lantern ring, and the buffering assembly comprises an inner column, an inner cavity, a piston, a liquid leakage hole and a connecting column. The inner cavity is formed in the inner column, and the piston is movably arranged in the inner cavity; the designed rubber lantern ring is matched with the buffering assembly, vibration can be subjected to double buffering weakening, and compared with a single vibration reduction structure, the design has the advantages that on one hand, the vibration absorption and buffering effect is improved, and on the other hand, the load pressure of the rubber lantern ring can be shared; and meanwhile, through the design of an inner column, an inner cavity, a piston and other assemblies in the buffer assembly, the springback speed of the rubber lantern ring can be reduced, and the installation stability of the engine can be guaranteed by reducing the springback speed of the rubber lantern ring.

Description

Technical Field

[0001] This utility model belongs to the technical field of engine vibration reduction and noise reduction devices, specifically relating to a vibration reduction and noise reduction device for gasoline engines. Background Technology

[0002] The gasoline engine is an essential component of a car. When the gasoline engine is running, and when the car is driving, it will generate a certain amount of vibration. To reduce the vibration, rubber shock absorbers are often installed between the engine and the chassis. The rubber shock absorbers absorb and weaken the vibration, and also reduce the noise generated by the vibration.

[0003] Existing rubber vibration dampers generally rely on the material properties of rubber to buffer and weaken vibrations. However, this single structural design has limited effect on vibration buffering. If the vibration is too large, it can also damage the rubber. Furthermore, the rubber rebounds quickly after being compressed, which is not conducive to ensuring the stability of the engine installation. Therefore, a new vibration reduction and noise reduction device needs to be designed to solve this problem. Utility Model Content

[0004] The purpose of this invention is to provide a vibration reduction and noise reduction device for gasoline engines, in order to solve the problems of limited vibration reduction effect, easy damage to rubber, and difficulty in ensuring engine installation stability of the single-structure rubber shock absorber proposed in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vibration reduction and noise reduction device for a gasoline engine, comprising a rubber collar, with side plates symmetrically arranged at the upper and lower ends of the rubber collar, and threaded posts fixed on the outer surface of the side plates. A buffer assembly is provided inside the rubber collar, the buffer assembly comprising an inner post, an inner cavity, a piston, a drain hole, and a connecting post. The inner cavity is opened inside the inner post, the piston is movably disposed inside the inner cavity, the drain hole is opened through the piston surface, and the connecting post is fixed to the bottom surface of the piston and fixedly connected to the side plates at the bottom.

[0006] Preferably, the rubber collar further includes a rubber part and a metal sheet part, wherein the metal sheet part is symmetrically fixed at the upper and lower ends of the rubber part.

[0007] Preferably, the outer edge surface of the piston is adapted to the inner wall of the inner cavity, and the inner cavity is filled with hydraulic oil.

[0008] Preferably, the inner column has a cylindrical structure, and the outer surface of the inner column is adapted to the inner wall of the rubber collar.

[0009] Preferably, a threaded post is fixed to the bottom surface of the top side plate, and a threaded hole is provided at the top of the inner column for threaded connection with the threaded post.

[0010] Preferably, a fixing assembly is provided between the side plate and the metal plate portion, the fixing assembly including a bolt mounted on the side plate, the bolt being threadedly connected to a screw hole opened on the surface of the metal plate portion.

[0011] Preferably, the screw holes are symmetrically formed on the surface of the metal sheet, and each side sheet is provided with two bolts that are adapted to the screw holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By combining a designed rubber collar with a buffer assembly, vibration can be damped and weakened in two ways. Compared with a single vibration damping structure, this design has the advantages of improving the absorption and damping effect of vibration and distributing the load pressure on the rubber collar. At the same time, the design of the internal column, internal cavity and piston of the buffer assembly can slow down the rebound of the rubber collar. By reducing the rebound speed of the rubber collar, the installation stability of the engine can be guaranteed. Attached Figure Description

[0014] Figure 1 This is a front sectional view of the present invention;

[0015] Figure 2 This is a three-dimensional schematic diagram of the rubber collar of this utility model;

[0016] Figure 3 This utility model Figure 1 Enlarged view of area A in the middle;

[0017] Figure 4 This utility model Figure 1 Enlarged diagram of area B in the middle;

[0018] In the diagram: 100, rubber collar; 101, rubber part; 102, metal sheet part; 200, side plate; 300, threaded post; 400, buffer assembly; 401, inner post; 402, inner cavity; 403, piston; 404, leakage hole; 405, connecting post; 500, threaded post; 600, threaded hole; 700, fixing assembly; 701, bolt; 702, screw hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example

[0021] Please see Figures 1 to 4 This embodiment of the present invention provides a technical solution: a vibration damping and noise reduction device for a gasoline engine, comprising a rubber collar 100, with side plates 200 symmetrically arranged at the upper and lower ends of the rubber collar 100, and threaded posts 300 fixed on the outer surface of the side plates 200. The vibration damping and noise reduction device can be installed between the engine and the vehicle frame via the threaded posts 300. A buffer assembly 400 is provided inside the rubber collar 100, which can buffer vibration. The buffer assembly 400 includes an inner post 401, an inner cavity 402, a piston 403, a drain hole 404, and a connecting post 405. The inner cavity 402 is opened inside the inner post 401, the piston 403 is movably disposed inside the inner cavity 402, and the drain hole 404 is opened through the inner post 405. The piston 403 has a connecting post 405 fixed to its bottom surface and fixedly connected to the side plate 200 at the bottom. The rubber collar 100 also includes a rubber part 101 and a metal plate part 102. The metal plate part 102 is symmetrically fixed at the upper and lower ends of the rubber part 101. The outer edge surface of the piston 403 is adapted to the inner wall of the inner cavity 402. The inner cavity 402 is filled with hydraulic oil. When vibration occurs, the rubber part 101 will deform, and the piston 403 can slide inside the inner cavity 402. The hydraulic oil can play a buffering role. The leakage hole 404 allows the hydraulic oil to pass through, allowing the piston 403 to slide. Through the cooperation of the above structures, vibration can be effectively buffered and weakened, and at the same time, a good noise reduction effect can be achieved.

[0022] In this embodiment, preferably, the inner column 401 is a cylindrical structure, and the outer surface of the inner column 401 is adapted to the inner wall of the rubber collar 100 to ensure a stable connection between the two.

[0023] In this embodiment, preferably, a threaded post 500 is fixed to the bottom surface of the top side plate 200, and a threaded hole 600 is opened at the top of the inner column 401 to be threadedly connected to the threaded post 500, thereby completing the detachable fixed connection between the top side plate 200 and the inner column 401.

[0024] In this embodiment, preferably, a fixing component 700 is provided between the side piece 200 and the metal sheet portion 102. The fixing component 700 includes bolts 701 installed on the side piece 200. The bolts 701 are threadedly connected to the screw holes 702 opened on the surface of the metal sheet portion 102, thus completing the stable connection between the side piece 200 and the rubber collar 100. The screw holes 702 are symmetrically opened on the surface of the metal sheet portion 102. Each side piece 200 is provided with two bolts 701 that are adapted to the screw holes 702, which improves the connection stability of the side piece 200 and prevents rotation.

[0025] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibration damping and noise reduction device for a gasoline engine, comprising a rubber collar (100), characterized in that: The rubber collar (100) has symmetrically arranged side plates (200) at its upper and lower ends. A threaded post (300) is fixed on the outer surface of the side plate (200). A buffer assembly (400) is arranged inside the rubber collar (100). The buffer assembly (400) includes an inner post (401), an inner cavity (402), a piston (403), a leakage hole (404), and a connecting post (405). The inner cavity (402) is opened inside the inner post (401). The piston (403) is movably arranged inside the inner cavity (402). The leakage hole (404) is opened through the surface of the piston (403). The connecting post (405) is fixed to the bottom surface of the piston (403) and is fixedly connected to the side plate (200) at the bottom.

2. The vibration reduction and noise reduction device for a gasoline engine according to claim 1, characterized in that: The rubber collar (100) also includes a rubber part (101) and a metal sheet part (102), wherein the metal sheet part (102) is symmetrically fixed at the upper and lower ends of the rubber part (101).

3. The vibration reduction and noise reduction device for a gasoline engine according to claim 2, characterized in that: The outer edge surface of the piston (403) is adapted to the inner wall of the inner cavity (402), and the inner cavity (402) is filled with hydraulic oil.

4. The vibration reduction and noise reduction device for a gasoline engine according to claim 3, characterized in that: The inner column (401) has a cylindrical structure, and the outer surface of the inner column (401) is adapted to the inner wall of the rubber collar (100).

5. A vibration reduction and noise reduction device for a gasoline engine according to claim 4, characterized in that: A threaded post (500) is fixed to the bottom surface of the top side plate (200), and a threaded hole (600) is provided at the top of the inner column (401) for threaded connection with the threaded post (500).

6. The vibration reduction and noise reduction device for a gasoline engine according to claim 5, characterized in that: A fixing assembly (700) is provided between the side plate (200) and the metal plate (102). The fixing assembly (700) includes a bolt (701) mounted on the side plate (200) and the bolt (701) is threadedly connected to a screw hole (702) opened on the surface of the metal plate (102).

7. A vibration reduction and noise reduction device for a gasoline engine according to claim 6, characterized in that: The screw holes (702) are symmetrically opened on the surface of the metal sheet (102), and each side plate (200) is provided with two bolts (701) that are adapted to the screw holes (702).

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