Vibration absorption structure of engine heat insulation pad

Abstract

The utility model provides a vibration absorption structure of an engine heat insulation pad. The vibration absorption structure comprises a heat insulation pad, a first damping assembly and a second damping assembly. The first damping assembly is arranged on the heat insulation pad, a connecting hole is formed in the heat insulation pad, a second damping assembly is movably installed in the connecting hole, the first damping assembly comprises a sound absorption pad, rubber pads are arranged on the upper portion and the lower portion of the sound absorption pad respectively, upper-layer non-woven fabric is arranged on the upper rubber pad, and lower-layer non-woven fabric is arranged on the lower rubber pad. The edges of the upper-layer non-woven fabric and the lower-layer non-woven fabric are connected, and the upper-layer non-woven The heat insulation pad comprises an upper-layer metal plate and a lower-layer metal plate, heat insulation materials are filled between the upper-layer metal plate and the lower-layer metal plate, and the edges of the upper-layer metal plate and the lower-layer metal plate are connected. The vibration absorption structure is simple in structure and convenient to install, the noise absorption capacity and the heat insulation effect are improved, and meanwhile the service life of the heat insulation pad is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile parts manufacturing, especially relates to a vibration absorption structure of engine heat insulation pad. BACKGROUND

[0002] With the rapid development of automobile technology, people's requirements for the environment of whole vehicle driving are higher and higher, and the automobile engine is the heart of the automobile, provides the device of power for the automobile, decides the power performance, economy, stability and comfort of the automobile. When the automobile engine works, the piston reciprocating motion, cylinder combustion and its moving parts will produce vibration and noise, and also produce a large amount of heat, and the vibration is more severe because the uneven road is transmitted to the engine during the driving of the vehicle, therefore, in order to provide the comfort of driving, the engine needs to be designed for heat insulation, shock absorption and noise reduction. The engine heat insulation pad in the prior art can solve the problem to a certain extent, but the effect of shock absorption and noise reduction is not very good, and it cannot meet people's demand for driving comfort. SUMMARY

[0003] Therefore, the utility model aims at providing a vibration absorption structure of engine heat insulation pad to solve the problem of poor driving comfort caused by energy, vibration and noise generated during engine operation.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A vibration absorption structure of engine heat insulation pad, comprising a heat insulation pad, a first shock absorption component and a second shock absorption component, the first shock absorption component is arranged on the heat insulation pad, the heat insulation pad is provided with a connecting hole, the second shock absorption component is movably installed in the connecting hole, the first shock absorption component comprises a sound-absorbing pad, the sound-absorbing pad is provided with rubber pads above and below respectively, the rubber pad above is provided with an upper non-woven fabric, the rubber pad below is provided with a lower non-woven fabric, the edges of the upper non-woven fabric and the lower non-woven fabric are connected, and the upper non-woven fabric is close to the heat insulation pad; The heat insulation pad comprises an upper metal plate and a lower metal plate, the upper metal plate and the lower metal plate are filled with heat insulation material, and the edges of the upper metal plate and the lower metal plate are connected.

[0006] Further, the second shock absorption component comprises a first sleeve and a second sleeve, the first sleeve passes through the connecting hole, the second sleeve is inserted into the first sleeve, and a rubber sleeve is arranged in the second sleeve.

[0007] Further, the first sleeve and the second sleeve are T-shaped respectively, the first sleeve and the second sleeve are inserted into the first sleeve and the second sleeve, and the first sleeve and the second sleeve are in the shape of an I-shaped structure, the annular shock absorption pad is arranged on the periphery of the first sleeve, the annular shock absorption pad is provided with two, and is located at the two ends of the first sleeve respectively, and the two annular shock absorption pads are heat insulation pads.

[0008] Further, the rubber pad is provided with a plurality of staggered through holes for absorbing noise.

[0009] Further, a plurality of rubber pads are arranged between the sound-absorbing pad and the lower non-woven fabric.

[0010] Further, the sound-absorbing pad is polyurethane foam, and the thickness of the sound-absorbing pad is greater than that of the rubber pad.

[0011] Further, the first damping assembly further comprises a high-temperature-resistant double-sided adhesive tape, one side of which is bonded to the upper non-woven fabric, and the other side of which is bonded to the heat-insulating pad.

[0012] Further, the upper metal plate and the lower metal plate are both aluminum plates, the heat-insulating material is ceramic fiber paper, and the heat-insulating material is arranged in multiple layers.

[0013] Compared with the prior art, the vibration absorption structure has the following beneficial effects:

[0014] The vibration absorption structure of the engine heat-insulating pad has the following advantages: the first damping assembly is arranged, the resilience of the rubber pad is utilized to absorb the vibration transmitted from the engine, the porous structure of the rubber pad can better elastically deform to absorb the vibration energy, the sound-absorbing cotton is arranged to refract and reflect the sound in the holes, thereby reducing the propagation of the sound and achieving the purpose of noise reduction, the heat-insulating pad is arranged in multiple layers to effectively insulate the heat generated by the engine, thereby achieving the purposes of heat insulation and noise absorption, and the comfort of driving is improved.

[0015] The second damping assembly is arranged, the rubber sleeve is arranged to avoid the rigid connection between the heat-insulating pad and the bolt, to avoid the cracking of the connecting hole due to the vibration of the engine, and to prolong the service life of the heat-insulating pad, and the annular damping pad is arranged to avoid the direct contact between the first sleeve and the second sleeve and the heat-insulating pad, to simultaneously buffer the vibration caused by the operation of the engine, to avoid the damage of the heat-insulating pad caused by the vibration of the engine, and to prolong the service life of the heat-insulating pad. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings are provided to explain the present application and, to provide no improper limitations on the present application. In the drawings:

[0017] Figure 1A structure schematic view of a vibration absorption structure of an engine heat insulation pad according to an embodiment of the present utility model.

[0018] Figure 2 A structure schematic view of a first damping assembly according to an embodiment of the present utility model.

[0019] Figure 3 A structure schematic view of a rubber pad according to an embodiment of the present utility model.

[0020] Figure 4 A cross-sectional schematic view of a second damping assembly according to an embodiment of the present utility model.

[0021] Explanation of reference signs:

[0022] 1 - heat insulation pad; 2 - first damping assembly; 3 - second damping assembly; 11 - connecting hole; 21 - upper layer of non-woven fabric; 22 - rubber pad; 23 - sound absorption pad; 24 - lower layer of non-woven fabric; 25 - high-temperature-resistant double-sided adhesive tape; 31 - first sleeve; 32 - second sleeve; 33 - rubber sleeve; 34 - annular damping pad. DETAILED DESCRIPTION

[0023] It should be noted that the embodiments in the present utility model and the features in the embodiments can be combined with each other without conflict.

[0024] In the description of the present utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0025] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two element internal communication.For ordinary skilled in the art, the above-mentioned terms can be understood by the specific meaning in the utility model through specific circumstances.

[0026] The utility model will be described below in detail with reference to the drawings and in combination with embodiments.

[0027] As Figures 1-4 The utility model discloses a vibration absorbing structure of engine heat insulation pad, including heat insulation pad 1, first damping component 2 and second damping component 3, first damping component 2 sets up on heat insulation pad 1, is provided with connecting hole 11 on heat insulation pad 1, and second damping component 3 is movably installed in connecting hole 11, and first damping component 2 includes sound absorption pad 23, and rubber pad 22 is arranged on sound absorption pad 23 respectively up and down, and the rubber pad 22 located in the upper portion is provided with upper non -woven fabric 21, and the rubber pad 22 located in the lower portion is provided with lower non -woven fabric 24, and the edge of upper non -woven fabric 21 and lower non -woven fabric 24 is connected, and upper non -woven fabric 21 is close to heat insulation pad 1, heat insulation pad 1 includes upper metal sheet and lower metal sheet, and heat insulation material is filled between upper metal sheet and lower metal sheet, and the edge of upper metal sheet and lower metal sheet is connected, rubber pad 22 is provided with a plurality of staggered arrangement through -hole, and through -hole is used to absorb noise, sound absorption pad 23 is polyurethane foam, and the thickness of sound absorption pad is greater than the thickness of rubber pad 22, and first damping component 2 still includes high temperature resistant double -sided adhesive tape 25, and high temperature resistant double -sided adhesive tape 25 one side and upper non -woven fabric 21 bond, and the other side and heat insulation pad 1 bond, upper metal sheet and lower metal sheet are aluminium sheet respectively, and the heat insulation material filled in the middle is ceramic fiber paper, and the middle heat insulation material is provided as multilayer.

[0028] When the engine is working, the vibration and noise generated by the engine are first transmitted to the lower rubber pad 22. Through the resilience of the elastic material of the rubber pad 22 itself, the vibration causes the rubber pad 22 to elastically deform, thereby absorbing the vibration energy and impact force. The rubber pad 22 is provided with multiple holes to better elastically deform and effectively absorb the vibration impact force. At the same time, the noise is refracted and reflected by the inner hole wall to attenuate, and the vibration and noise are further transmitted to the sound-absorbing pad. The sound-absorbing pad 23 is made of polyurethane foam material, and the inside of the polyurethane foam is an irregular microporous structure, which causes the noise to be continuously refracted and reflected inside, reducing the propagation of sound. The thickness of the sound-absorbing pad 23 is set to be greater than that of the rubber pad 22, so that the noise propagates inside the sound-absorbing pad 23 for a long enough time, thereby achieving the purpose of effectively absorbing noise. Through the setting of the upper rubber pad 22, the purpose is to absorb the residual vibration impact force and noise, thereby achieving the purpose of noise reduction. The heat insulation pad 1 is provided as a multi-layer mechanism. The upper metal plate and the lower metal plate are made of aluminum plates. The edges of the upper metal plate and the lower metal plate are welded together. The aluminum plate has a heat insulation effect, and the middle is filled with multiple ceramic fiber papers to improve the heat insulation effect. Thus, the environment of the cab is effectively improved, and the driving comfort is improved.

[0029] As shown in Figure 2 , the upper non-woven fabric 21, the rubber pad 22, the sound-absorbing pad 23 and the lower non-woven fabric 24 of the second damping assembly 2 are bonded together by glue. The edges of the upper non-woven fabric 21 and the lower non-woven fabric 22 are connected together by ultrasonic welding. The production is convenient, and it is also convenient to replace after a long time of use and aging. The upper non-woven fabric 21 and the lower non-woven fabric 24 avoid direct contact of the rubber pad 22 with the heat insulation pad 1 and the engine, avoid direct contact, and prevent difficult disassembly after aging and embrittlement during use. According to different vibration absorption needs, multiple rubber pads 22 are provided between the sound-absorbing pad 23 and the lower non-woven fabric 24 to improve the damping performance.

[0030] As shown in Figure 4 , the second damping assembly 3 includes a first sleeve 31 and a second sleeve 32. The first sleeve 31 passes through the connecting hole 11, and the second sleeve 32 is inserted into the first sleeve 31. The second sleeve 32 is provided with a rubber sleeve 33. The first sleeve 31 and the second sleeve 32 are respectively T-shaped, and after being inserted, they form an I-shaped structure. The annular damping pad 34 is arranged on the periphery of the first sleeve 31. The annular damping pad 34 is provided with two, which are respectively located at the two ends of the first sleeve 31. The two annular damping pads 34 are separated by a heat insulation pad.

[0031] Through the setting of the second shock-absorbing assembly 3, the first sleeve 31 and the second sleeve 32 are riveted and fixed together, through the setting of the rubber sleeve 33, the rigid connection of the heat insulation pad 1 and the bolt is avoided, the cracking of the connecting hole 11 caused by the vibration of the engine is avoided, and the service life of the heat insulation pad 1 is prolonged; through the setting of the annular shock-absorbing pad 34, the direct contact of the first sleeve 31 and the second sleeve 32 with the heat insulation pad 1 is avoided, the vibration caused by the engine working is buffered, the damage of the engine vibration to the heat insulation pad 1 is avoided, and the service life of the heat insulation pad 1 is prolonged.

[0032] The working principle of the vibration absorption structure of the engine heat insulation pad is as follows: when the engine works, the vibration and noise generated by the engine are first absorbed by the lower rubber pad 22, then further absorbed by the sound-absorbing pad 23, the residual vibration energy and noise are absorbed by the upper rubber pad 22, the heat generated by the transmitter when working is converted and isolated by the heat insulation pad 1, so that noise reduction and heat insulation are realized, the environment of the cab is effectively improved, and the demand for improving the driving comfort is improved; the connecting hole 11 of the heat insulation pad 1 passes through the second shock-absorbing assembly 3, the rigid connection of the heat insulation pad 1 and the bolt is avoided through the setting of the rubber sleeve 33, the direct contact of the first sleeve 31 and the second sleeve 32 with the heat insulation pad 1 is avoided through the setting of the annular shock-absorbing pad 34, the damage of the engine vibration to the heat insulation pad 1 is avoided, and the service life of the heat insulation pad 1 is prolonged.

[0033] The above only describes the preferred embodiments of the present application, and does not limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vibration absorbing structure of an engine heat shield, characterized by: The application relates to a heat insulation pad (1), a first shock absorption assembly (2) and a second shock absorption assembly (3); the first shock absorption assembly (2) is arranged on the heat insulation pad (1), the heat insulation pad (1) is provided with a connecting hole (11), the second shock absorption assembly (3) is movably arranged in the connecting hole (11), the first shock absorption assembly (2) comprises an acoustic absorption pad (23), rubber pads (22) are arranged above and below the acoustic absorption pad (23) respectively, an upper non-woven fabric (21) is arranged on the upper rubber pad (22), a lower non-woven fabric (24) is arranged on the lower rubber pad (22), the edges of the upper non-woven fabric (21) and the lower non-woven fabric (24) are connected, and the upper non-woven fabric (21) is close to the heat insulation pad (1); the heat insulation pad (1) comprises an upper metal plate and a lower metal plate, heat insulation materials are filled between the upper metal plate and the lower metal plate, and the edges of the upper metal plate and the lower metal plate are connected.

2. The vibration absorbing structure of an engine heat-insulating gasket according to claim 1, characterized by: The second shock absorption assembly (3) comprises a first sleeve (31) and a second sleeve (32), the first sleeve (31) penetrates through the connecting hole (11), the second sleeve (32) is sleeved in the first sleeve (31), and a rubber sleeve (33) is arranged in the second sleeve (32).

3. A vibration absorbing structure of an engine heat-insulating gasket according to claim 2, characterized by: The first sleeve (31) and the second sleeve (32) are T-shaped, the first sleeve (31) and the second sleeve (32) are sleeved to form a H-shaped structure, annular shock absorption pads (34) are arranged on the periphery of the first sleeve (31), the annular shock absorption pads (34) are arranged at the two ends of the first sleeve (31), and the heat insulation pad (1) is arranged between the two annular shock absorption pads (34).

4. The vibration absorbing structure of an engine heat-insulating gasket according to claim 1, characterized by: A plurality of staggered through holes are arranged on the rubber pad (22), and the through holes are used for absorbing noise.

5. The vibration absorbing structure of an engine heat-insulating gasket according to claim 2, characterized by: A plurality of rubber pads (22) are arranged between the acoustic absorption pad (23) and the lower non-woven fabric (24).

6. The vibration absorbing structure of an engine heat-insulating gasket according to claim 1, characterized by The acoustic absorption pad (23) is polyurethane foam, and the thickness of the acoustic absorption pad is greater than that of the rubber pad (22).

7. The vibration absorbing structure of an engine heat-insulating gasket according to claim 1, characterized by: The first shock absorption assembly (2) further comprises high-temperature-resistant double-sided adhesive tape (25), one side of the high-temperature-resistant double-sided adhesive tape (25) is bonded with the upper non-woven fabric (21), and the other side is bonded with the heat insulation pad (1).

8. The vibration absorbing structure of an engine heat-insulating gasket according to claim 1, characterized by: The upper metal plate and the lower metal plate are both aluminum plates, the heat insulation materials filled in the middle are ceramic fiber paper, and the heat insulation materials in the middle are arranged in multiple layers.

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