A sound insulation and vibration reduction device for engine

Abstract

The utility model relates to the field of automobile accessories, and in particular to a sound insulation and shock absorption device for an engine; a sound insulation and shock absorption device for an engine is provided, comprising: a sound insulation layer and a shock absorption layer; wherein the shock absorption layer comprises: a first shock absorption member, a first elastic member, a second shock absorption member, a second elastic member and a connecting pipe; the utility model provides the first elastic member and the second elastic member, so that the shock absorption effect of the shock absorption layer is better, and the cooperation of the limit groove, the limit block and the first elastic member enables the shock absorption layer to not only have a shock absorption effect, but also enable the user to timely discover the abnormal vibration of the engine; the provision of the limit groove and the limit block can also support the second elastic member, so as to prevent the second elastic member from deforming during the deformation process; the sound insulation layer can effectively absorb sound, and alleviate the influence of the sound generated by the engine operation on the driver.

Description

Technical Field

[0001] The utility model relates to the field of automobile accessories, in particular to a sound insulation and vibration reduction device for an engine. Background Art

[0002] The automobile engine is a device that provides power for the automobile, and determines the power, economy, stability and environmental protection of the automobile. When the automobile engine is working, the reciprocating motion of the piston in the cylinder, the combustion of the fuel in the cylinder and the movement of other moving parts with the piston rod will cause the engine to vibrate violently, thereby affecting the controllability and comfort of the automobile. In the prior art, the engine will be subjected to certain shock absorption treatment. For example, the Chinese patent document CN213598480U discloses a shock-absorbing and anti-skid rubber pad automobile engine gasket. Although it can reduce the impact of engine vibration on the car body to a certain extent, it does not solve the problem of loud engine working noise, and it only realizes the shock absorption function through V-shaped springs, and cannot detect abnormal vibration of the engine in time.

[0003] Therefore, there is an urgent need for an engine sound insulation and vibration reduction device that can absorb vibration, sound and respond to abnormal vibration of the engine. Utility Model Content

[0004] The utility model aims to provide a sound insulation and vibration reduction device for an engine in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] Provided is a sound insulation and vibration reduction device for an engine, comprising: a sound insulation layer and a vibration reduction layer detachably connected to the top of the sound insulation layer;

[0007] Wherein, the shock-absorbing layer includes: a first shock-absorbing member, a first elastic member, a second shock-absorbing member, a second elastic member and a connecting tube; a limiting groove is fixedly provided at the middle part of the bottom end of the first shock-absorbing member, a limiting block is fixedly provided at the middle part of the top end of the second shock-absorbing member, and the top of the limiting block is sleeved in the limiting groove; the top of the first elastic member is fixedly connected to the bottom of the limiting groove, and the bottom end of the first elastic member is fixedly connected to the top of the limiting block; the second elastic member is sleeved outside the limiting groove, the top of the second elastic member is fixedly connected to the bottom end of the first shock-absorbing member, and the bottom end of the second elastic member is fixedly connected to the top end of the second shock-absorbing member; the top of the connecting tube is fixedly connected to the bottom end of the first shock-absorbing member, and the bottom end of the connecting tube is fixedly connected to the top end of the second shock-absorbing member.

[0008] Preferably, a plurality of sound-absorbing holes are provided at the bottom end of the sound insulation layer.

[0009] More preferably, a plurality of the sound absorbing holes are filled with polyurethane foam.

[0010] Preferably, the sound insulation layer is made of rubber.

[0011] Preferably, the height of the limit groove is a first height, the height of the limit block is a second height, the first height is greater than the second height, the first height is not less than the sum of the second height and the compressed height of the first elastic member, and the first height is less than the sum of the second height and the height of the first elastic member in a natural state.

[0012] Preferably, the connecting pipe is a corrugated pipe.

[0013] Preferably, a sticky layer is provided at the bottom end of the second shock-absorbing member, and the bottom end of the sticky layer is connected to the top end of the sound insulation layer.

[0014] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0015] The utility model provides a first elastic member and a second elastic member, so that the shock absorbing layer has a better shock absorbing effect. The cooperation of the limit groove, the limit block and the first elastic member makes the shock absorbing layer not only have a shock absorbing effect, but also allow the user to promptly discover abnormal vibrations of the engine; the setting of the limit groove and the limit block can also support the second elastic member to prevent the second elastic member from deforming during the deformation process; the sound insulation layer can effectively absorb sound and alleviate the impact of the sound generated by the engine on the driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a basic structural diagram of a sound insulation and vibration reduction device for an engine in one embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of another perspective of the sound insulation and vibration reduction device for an engine in one embodiment of the utility model;

[0018] Figure 3 This is a schematic structural diagram of a first shock absorbing member and a limiting groove in an embodiment of the utility model;

[0019] Figure 4 It is a cross-sectional view of a sound insulation and vibration reduction device for an engine in one embodiment of the utility model.

[0020] Reference numerals in the figures include:

[0021] Sound insulation layer 1; sound absorbing hole 11; shock absorbing layer 2; first shock absorbing member 21; limiting groove 211; first elastic member 22; second shock absorbing member 23; limiting block 231; second elastic member 24; connecting pipe 25. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0025] Example

[0026] This embodiment provides a sound insulation and vibration reduction device for an engine, comprising: a sound insulation layer 1 and a vibration reduction layer 2 detachably connected to the top of the sound insulation layer 1;

[0027] The sound insulation layer 1 is made of rubber, and a plurality of sound absorbing holes 11 are opened at the bottom of the sound insulation layer 1, and the plurality of sound absorbing holes 11 are filled with polyurethane foam;

[0028] The shock absorbing layer 2 includes: a first shock absorbing member 21, a first elastic member 22, a second shock absorbing member 23, a second elastic member 24 and a connecting tube 25; a limiting groove 211 is fixedly provided in the middle of the bottom end of the first shock absorbing member 21, a limiting block 231 is fixedly provided in the middle of the top end of the second shock absorbing member 23, and the top of the limiting block 231 is sleeved in the limiting groove 211; the top of the first elastic member 22 is fixedly connected to the bottom of the limiting groove 211, and the bottom of the first elastic member 22 is fixedly connected to the top of the limiting block 231; the second elastic member 24 is sleeved outside the limiting groove 211, and the top of the second elastic member 24 is sleeved to the first shock absorbing member 2 1, the bottom end of the second elastic member 24 is fixedly connected to the top end of the second shock absorbing member 23; the top end of the connecting pipe 25 is fixedly connected to the bottom end of the first shock absorbing member 21, and the bottom end of the connecting pipe 25 is fixedly connected to the top end of the second shock absorbing member 23; the height of the limiting groove 211 is a first height, and the height of the limiting block 231 is a second height, the first height is greater than the second height, the first height is not less than the sum of the second height and the compressed height of the first elastic member 22, and the first height is less than the sum of the second height and the height of the first elastic member 22 in the natural state; the connecting pipe 25 is a bellows;

[0029] A sticky layer is provided at the bottom end of the second shock absorbing member 23 , and the bottom end of the sticky layer is connected to the top end of the sound insulation layer 1 .

[0030] The use principle is as follows: the sound insulation layer 1 is close to the engine, and the sound generated by the engine is absorbed by the sound absorbing holes 11 at the bottom of the sound insulation layer 1 and the polyurethane foam in the sound absorbing holes 11, thereby achieving a sound insulation effect; the vibration generated by the engine is first buffered by the sound insulation layer 1 made of rubber, and then transmitted to the shock absorbing layer 2, and the first elastic member 22 and the second elastic member 24 in the shock absorbing layer 2 are deformed, thereby achieving a shock absorbing effect; when the engine vibrates too much, the first elastic member 22 is compressed to the shortest due to excessive pressure, and at this time the bottom end of the limiting groove 211 contacts the top end of the second shock absorbing member 23, making an abnormal sound, so that the user can detect engine abnormalities in time.

[0031] In summary, the utility model provides a first elastic member and a second elastic member to make the shock absorbing layer have a better shock absorbing effect. The cooperation of the limit groove, the limit block and the first elastic member makes the shock absorbing layer not only have a shock absorbing effect, but also allow the user to detect abnormal vibration of the engine in time. The setting of the limit groove and the limit block can also support the second elastic member to prevent the second elastic member from deforming during the deformation process. The sound insulation layer can effectively absorb sound and alleviate the impact of the sound generated by the engine on the driver.

[0032] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A sound insulation and vibration reduction device for an engine, characterized in that: include: A sound insulation layer (1) and a shock absorbing layer (2) detachably connected to the top of the sound insulation layer (1); The shock absorbing layer (2) comprises: a first shock absorbing member (21), a first elastic member (22), a second shock absorbing member (23), a second elastic member (24) and a connecting pipe (25); a limiting groove (211) is fixedly provided in the middle of the bottom end of the first shock absorbing member (21), a limiting block (231) is fixedly provided in the middle of the top end of the second shock absorbing member (23), and the top of the limiting block (231) is sleeved in the limiting groove (211); the top end of the first elastic member (22) is fixedly connected to the bottom of the limiting groove (211), and the second elastic member (23) is fixedly connected to the bottom of the limiting groove (211). The bottom end of an elastic member (22) is fixedly connected to the top end of the limiting block (231); the second elastic member (24) is sleeved outside the limiting groove (211); the top end of the second elastic member (24) is fixedly connected to the bottom end of the first shock absorbing member (21); the bottom end of the second elastic member (24) is fixedly connected to the top end of the second shock absorbing member (23); the top end of the connecting tube (25) is fixedly connected to the bottom end of the first shock absorbing member (21); the bottom end of the connecting tube (25) is fixedly connected to the top end of the second shock absorbing member (23).

2. The engine sound insulation and vibration reduction device according to claim 1, characterized in that: A plurality of sound-absorbing holes (11) are provided at the bottom end of the sound-insulating layer (1).

3. The engine sound insulation and vibration reduction device according to claim 2, characterized in that: A plurality of the sound absorbing holes (11) are filled with polyurethane foam.

4. The engine sound insulation and vibration reduction device according to claim 1, characterized in that: The sound insulation layer (1) is made of rubber.

5. The engine sound insulation and vibration reduction device according to claim 1, characterized in that: The height of the limiting groove (211) is a first height, and the height of the limiting block (231) is a second height, the first height is greater than the second height, the first height is not less than the sum of the second height and the compressed height of the first elastic member (22), and the first height is less than the sum of the second height and the height of the first elastic member (22) in a natural state.

6. The engine sound insulation and vibration reduction device according to claim 1, characterized in that: The connecting pipe (25) is a corrugated pipe.

7. The engine sound insulation and vibration reduction device according to claim 1, characterized in that: The bottom end of the second shock-absorbing member (23) is provided with a sticky layer, and the bottom end of the sticky layer is connected to the top end of the sound insulation layer (1).

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