A car vibration damping pad

Abstract

This utility model relates to the field of vibration damping pads, specifically a car vibration damping pad. The utility model comprises an upper layer, a middle layer, and a lower layer. The upper layer is a low-hardness rubber layer, the middle layer is a spring and rubber combination layer, and the lower layer is a high-hardness rubber layer. The outer surfaces of the upper and lower layers are provided with anti-slip textures, and the middle layer has cross-shaped metal reinforcing ribs inside. The upper, middle, and lower layers are fixedly connected by an adhesive, and the connection points are provided with positioning protrusions and positioning grooves. The positioning protrusions and positioning grooves are adapted to each other, employing a three-layer composite structure for synergistic effect. The upper low-hardness rubber layer absorbs high-frequency micro-vibrations; the middle spring and rubber combination layer utilizes spring elasticity to buffer low-to-medium frequency vibrations; the cross-shaped metal reinforcing ribs enhance shear stability; and the lower high-hardness rubber layer provides stable support.

Description

Technical Field

[0001] This utility model relates to the field of vibration damping pads, and specifically to a car vibration damping pad. Background Technology

[0002] Traditional elevator car vibration damping pads typically employ a single rubber layer structure, which presents several drawbacks in practical use. For example, a single-hardness rubber layer cannot simultaneously meet the dual requirements of vibration damping and support: a rubber layer with lower hardness provides better vibration damping but is prone to deformation under long-term pressure, leading to decreased support stability; a rubber layer with higher hardness offers strong support but has limited vibration damping effect, failing to effectively isolate and absorb vibrations and noise generated during elevator operation. Furthermore, the connection methods between the layers of traditional vibration damping pads are relatively simple, often using simple adhesives or mechanical fixation, which can easily lead to delamination or loosening after long-term use, affecting the overall performance and lifespan of the vibration damping pad. Moreover, the anti-slip design of traditional vibration damping pads is often inadequate, making them prone to displacement during elevator car operation, reducing safety and reliability. Utility Model Content

[0003] This utility model provides a car vibration damping pad to solve the problems of the prior art.

[0004] The objective of this utility model can be achieved through the following technical solution: a car vibration damping pad, comprising an upper layer, a middle layer and a lower layer, wherein the upper layer is a low-hardness rubber layer, the middle layer is a spring and rubber combination layer, and the lower layer is a high-hardness rubber layer. The outer surfaces of the upper and lower layers are provided with anti-slip textures, and the middle layer is provided with cross-shaped metal reinforcing ribs. The upper, middle and lower layers are fixedly connected by an adhesive, and the connection is provided with positioning protrusions and positioning grooves, wherein the positioning protrusions and positioning grooves are adapted to each other. In a further improvement, the upper low-hardness rubber layer is made of nitrile rubber with a Shore hardness of 30-40 degrees and a thickness of 5-8 mm. In a further improvement, the anti-slip texture on the outer surfaces of the upper and lower layers consists of evenly spaced strip-shaped anti-slip protrusions with a protrusion height of 1-2 mm. In a further improvement, the spring in the middle layer is a helical spring with a diameter of 8-10mm, a length of 10-15mm, and an overall thickness of 15-20mm. In a further improvement, the metal reinforcing rib is a stainless steel reinforcing rib with a diameter of 3-4 mm. In a further improvement, the lower high-hardness rubber layer is made of natural rubber with a Shore hardness of 60-70 degrees and a thickness of 6-10 mm. In a further improvement, the height of the positioning protrusion is 2-3mm, and the depth of the positioning groove is adapted to the height of the positioning protrusion. A further improvement is that the adhesive is an epoxy resin adhesive.

[0005] Compared with existing technologies, the beneficial effects of this utility model car vibration damping pad are as follows: A three-layer composite structure works synergistically: the upper low-hardness rubber layer absorbs high-frequency micro-vibrations; the middle layer, a combination of springs and rubber, uses spring elasticity to buffer low-to-medium frequency vibrations, while cross-shaped metal reinforcing ribs enhance shear stability; and the lower high-hardness rubber layer provides stable support. Simultaneously, the interlayer structure is strengthened by the mechanical interlocking of positioning protrusions and grooves with adhesive, preventing delamination. Attached Figure Description

[0006] Figure 1 This is a structural schematic diagram of the present invention. Figure 2 This is a schematic diagram of the middle layer of this utility model. Figure 3 This is a schematic diagram of the upper structure of the present invention. In the diagram, 1-upper layer, 2-middle layer, 21-metal reinforcing rib, 22-spring, 3-lower layer, 4-anti-slip texture, 51-positioning protrusion, 52-positioning groove. Detailed Implementation

[0007] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 do not 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; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0008] The following describes the embodiments and appendices. Figures 1-3 The technical solution of this utility model will be further described below.

[0009] Example 1 A car vibration damping pad includes an upper layer 1, a middle layer 2, and a lower layer 3. The upper layer 1 is a low-hardness rubber layer, the middle layer 2 is a combination layer of spring 22 and rubber, and the lower layer 3 is a high-hardness rubber layer. The outer surfaces of the upper layer 1 and the lower layer 3 are provided with anti-slip textures 4. The middle layer 2 is provided with cross-shaped metal reinforcing ribs 21. The upper layer 1, the middle layer 2, and the lower layer 3 are fixedly connected by adhesive, and the connection is provided with positioning protrusions 51 and positioning grooves 52. The positioning protrusions 51 and positioning grooves 52 are adapted to each other.

[0010] like Figures 1-3 As shown, the car vibration damping pad in this embodiment adopts a three-layer composite structure. Through the synergistic effect of the upper low-hardness rubber layer, the middle spring and rubber combination layer, and the lower high-hardness rubber layer, excellent vibration damping and support performance is achieved.

[0011] The upper low-hardness rubber layer is in direct contact with the car body. Its soft texture can effectively absorb and disperse the high-frequency micro-vibrations generated during car operation. When the car vibrates due to operation, the low-hardness rubber layer undergoes elastic deformation, thereby reducing the transmission of vibrations into the car body and improving passenger comfort.

[0012] The middle layer of springs and rubber composite layer plays a crucial role in buffering and supporting the vehicle. The elastic properties of the springs allow them to withstand significant pressure and deform elastically under stress, storing energy; when the external force disappears, the springs return to their original shape, releasing the energy. This enables the middle layer to effectively buffer the vertical impact force on the car, reducing the amplitude of vibration. Simultaneously, the rubber filling between the springs not only limits excessive spring deformation but also further absorbs and dissipates vibration energy, improving the vibration damping effect. Furthermore, the cross-shaped metal reinforcing ribs enhance the structural strength and stability of the middle layer, preventing deformation or damage during long-term use.

[0013] The lower high-hardness rubber layer provides a stable support base. Its high hardness can withstand the weight of the car, ensuring that the damping pad will not lose its support performance due to excessive compression. At the same time, the high-hardness rubber layer can also resist the erosion of the external environment, extending the service life of the damping pad.

[0014] The three-layer structure is fixedly connected by adhesive, and the connection points are equipped with positioning protrusions and positioning grooves. This design not only increases the contact area between the layers and improves the connection strength, but also ensures the precise positioning of each layer, prevents relative displacement during use, and guarantees the overall stability and reliability of the vibration damping pad.

[0015] As a further preferred embodiment, the low-hardness rubber layer of the upper layer 1 is made of nitrile rubber with a Shore hardness of 30-40 and a thickness of 5-8 mm. Nitrile rubber has good oil resistance, abrasion resistance, and aging resistance, and can maintain stable physical and chemical properties during long-term use. Its low hardness characteristic allows the upper layer to better adapt to the vibration of the car, effectively absorb high-frequency micro-vibrations, and improve ride comfort.

[0016] As a further preferred embodiment, the anti-slip texture 4 on the outer surfaces of the upper layer 1 and the lower layer 3 consists of evenly spaced strip-shaped anti-slip protrusions with a protrusion height of 1-2 mm. The strip-shaped anti-slip protrusions increase the friction between the damping pad and the car and support surface, preventing the damping pad from sliding or shifting during use.

[0017] As a further preferred embodiment, the spring 22 of the middle layer 2 is a helical spring with a diameter of 8-10 mm, a length of 10-15 mm, and an overall thickness of 15-20 mm. The helical spring has good elasticity and fatigue resistance, and can maintain stable elastic characteristics under repeated stress.

[0018] As a further preferred embodiment, the metal reinforcing rib 21 is a stainless steel reinforcing rib with a diameter of 3-4 mm. The cross-shaped structural design enhances the overall rigidity and stability of the middle layer, effectively preventing deformation of the middle layer under stress, and improving the load-bearing capacity and service life of the vibration damping pad.

[0019] As a further preferred embodiment, the lower layer 3, a high-hardness rubber layer, is made of natural rubber with a Shore hardness of 60-70 and a thickness of 6-10 mm. Natural rubber has high elasticity and strength, providing stable support performance. Its high hardness allows the lower layer to withstand greater pressure, ensuring that the vibration damping pad will not be excessively compressed or deformed during long-term use, thus guaranteeing the support stability of the vibration damping pad.

[0020] As a further preferred embodiment, the height of the positioning protrusion 51 is 2-3 mm, and the depth of the positioning groove 52 is adapted to the height of the positioning protrusion 51. The combined use of the positioning protrusion and the positioning groove enables precise positioning between layers during connection, which not only improves assembly efficiency but also enhances the connection strength and stability between layers, preventing delamination or loosening during use.

[0021] As a further preferred embodiment, the adhesive is an epoxy resin adhesive.

[0022] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A car vibration damping pad, characterized in that, It includes an upper layer (1), a middle layer (2) and a lower layer (3). The upper layer (1) is a low-hardness rubber layer, the middle layer (2) is a spring (22) and rubber combination layer, and the lower layer (3) is a high-hardness rubber layer. The outer surfaces of the upper layer (1) and the lower layer (3) are provided with anti-slip textures (4). The middle layer (2) is provided with cross-shaped metal reinforcing ribs (21). The upper layer (1), the middle layer (2) and the lower layer (3) are fixedly connected by adhesive and the connection is provided with positioning protrusions (51) and positioning grooves (52). The positioning protrusions (51) and the positioning grooves (52) are adapted to each other.

2. The car vibration damping pad according to claim 1, characterized in that, The upper layer (1) has a low-hardness rubber layer made of nitrile rubber with a Shore hardness of 30-40 degrees and a thickness of 5-8 mm.

3. The car vibration damping pad according to claim 1, characterized in that, The anti-slip texture (4) on the outer surface of the upper layer (1) and the lower layer (3) consists of evenly spaced strip-shaped anti-slip protrusions with a protrusion height of 1-2 mm.

4. The car vibration damping pad according to claim 1, characterized in that, The spring (22) of the middle layer (2) is a helical spring with a diameter of 8-10mm and a length of 10-15mm. The overall thickness of the middle layer 2 is 15-20mm.

5. The car vibration damping pad according to claim 1, characterized in that, The metal reinforcing rib (21) is a stainless steel reinforcing rib with a diameter of 3-4 mm.

6. The car vibration damping pad according to claim 1, characterized in that, The lower layer (3) is made of natural rubber with a Shore hardness of 60-70 degrees and a thickness of 6-10 mm.

7. The car vibration damping pad according to claim 1, characterized in that, The height of the positioning protrusion (51) is 2-3mm, and the depth of the positioning groove (52) is adapted to the height of the positioning protrusion (51).

8. The car vibration damping pad according to claim 1, characterized in that, The adhesive is an epoxy resin adhesive.

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