Drainage structure with good sound insulation performance

Abstract

The utility model discloses a drainage structure with good sound insulation performance in a traffic vehicle door system, which comprises a flow guide surface arranged on a vehicle body in a high-low manner; the threshold assembly is fixed to the flow guide face, the threshold assembly comprises an outer threshold, and a sound absorption piece is arranged in a cavity of the outer threshold; a first sealing body and a second sealing body are arranged between the outer doorsill and the flow guide face in an echelon and spaced mode, drain holes for draining water in a staggered mode are formed in the first sealing body and the second sealing body, and a third sealing piece used for blocking noise is arranged between the outer doorsill and the door leaf. The third sealing piece is tightly pressed on the door leaf to form side sealing, so that a water inlet of the lower drainage structure is reduced, sound waves entering a vehicle from the upper portion of an outer doorsill through the lower portion of the door leaf become smaller equivalently, the sound insulation performance of the lower portion of the door system can be improved, and the service life of the door system is prolonged. While the first sealing body and the second sealing body insulate sound, accumulated water can be filled into the drainage hole to be smoothly discharged, and the sound absorption part helps to reduce noise.

Description

Technical Field

[0001] This application relates to the technical field of rail transit vehicle door systems, and particularly to a drainage structure with good sound insulation performance. Background Art

[0002] The concealed door is currently one of the door systems widely used in rail vehicles. When the door is opened and closed, the door leaf is located in the sandwich space between the side wall of the car body and the interior trim panel. Different from the plug door, the door leaf is not flush with the outer surface of the car body after the concealed door is closed. Therefore, water may accumulate in the area of the door system or on both sides of the door opening during vehicle operation. To prevent water from entering the vehicle interior, a structure for draining water outside the vehicle needs to be designed at the lower part of the vehicle door system.

[0003] Patent CN215590725U proposed a drainage structure at the lower part of a straddle-type concealed door, which realizes drainage by means of an inclined diversion area, a support pedal and drainage holes, and can avoid problems such as poor processability, high cost and easy blockage of the conventional drain pipe structure. However, the suspended space between the support pedal and the diversion area will cause a significant reduction in the sound insulation level of the concealed door system, reducing passenger comfort. Utility Model Content

[0004] The purpose of this application is to provide a drainage structure with good sound insulation performance to solve the defect of a significant reduction in the sound insulation level caused by solving the problem of water accumulation in the concealed door area in the prior art.

[0005] To achieve the above purpose, the following technical solution is adopted in this application:

[0006] A drainage structure with good sound insulation performance for draining water at the installation location of the door system on the car body, characterized by including:

[0007] A diversion surface, which is set at a certain height on the car body;

[0008] A sill assembly, which is fixed on the diversion surface. The sill assembly includes an outer sill, and a sound-absorbing member is arranged in the cavity of the outer sill; a first seal and a second seal are arranged in a stepped and spaced manner between the outer sill and the diversion surface, and drainage holes for staggered drainage are arranged on the first seal and the second seal. A third seal for blocking noise is arranged between the outer sill and the door leaf.

[0009] In a further aspect of this application, the diversion surface is arranged at the edge of the car body, and the height of the diversion surface gradually decreases from the inside of the car body to the outside of the car body.

[0010] In a further aspect of this application, the cross-section of the third seal is a single sealing lip that turns up.

[0011] In a further solution of the present application, the first sealing body includes a first seal, one end of the first seal is fixed to the outer side edge of the bottom of the outer sill, and the other end abuts against the guide surface.

[0012] In a further solution, a plurality of first drainage holes are provided on the first seal along the length direction of the vehicle body.

[0013] In a further solution, the second sealing body includes a second seal, one end of the second seal is fixed to the inner side edge of the bottom of the outer sill, and the other end abuts against the guide surface.

[0014] In a further solution, a plurality of second drainage holes are provided on the second seal along the length direction of the vehicle body, and the plurality of second drainage holes are arranged in a staggered manner corresponding to the plurality of first drainage holes.

[0015] In a further solution of the present application, an installation groove is provided at the bottom of the vehicle body along the direction of the vehicle body, and the installation portion of the outer sill is disposed in the installation groove.

[0016] In a further solution of the present application, the sound-absorbing member is made of through-hole aluminum foam with a pore diameter ≥ 3 mm.

[0017] The beneficial effects of the present application are as follows:

[0018] In the present application, three structures of the first sealing body, the second sealing body and the third seal are designed. The third seal is pressed against the side of the door leaf to form a side seal, so that the water inlet of the lower drainage structure is reduced. For the sound wave entering the vehicle from above the outer sill and below the door leaf, it is equivalent to the reduction of its inlet channel, which is beneficial to improving the sound insulation performance of the lower part of the door system. While the first sealing body and the second sealing body are sound-insulating, the accumulated water can be smoothly discharged through the drainage holes, and the sound-absorbing member helps to reduce noise.

[0019] Among them, the drainage holes on the first seal and the second seal are staggered. When the sound wave enters from below the outer sill, part of it will enter the vehicle along the opposite direction of the water flow path, and the "labyrinth" channel formed by the alternating arrangement of the drainage holes has a significant weakening effect on its intensity. Description of the Drawings

[0020] Figure 1 It is a cross-sectional structure diagram of the drainage structure in the embodiment of the present application;

[0021] Figure 2 It is a partial view of the drainage structure in the embodiment of the present application (viewed from outside the vehicle).

[0022] Figure 3 It is a partial cross-sectional view showing the first drainage hole and the second drainage hole in the partial drainage structure of the present application.

[0023] Among them:

[0024] 1. Car body; 2. Threshold assembly; 3. Sound-absorbing member; 4. Back cavity; 5. Flow guiding surface; 6. Door leaf; 201. Outer threshold; 202. Outer wall; 203. Inner wall; 204. First seal; 205. Second seal; 206. Third seal; 207. First drain hole; 208. Bottom wall; 209. Second drain hole; 101. Outside of the car body; 102. Inside of the car body; 103. Installation groove. Detailed implementation mode

[0025] 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. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation on the present application and its application or use.

[0026] As Figure 1 Figure 2 shown, taking Figure 1 as an example, the outside of the car body 101 is the right side of the door leaf 6, and the inside of the car body 102 is the left side of the door leaf 6. The drainage structure in this embodiment prevents accumulated water from entering the car body. In this embodiment, a drainage structure with good sound insulation performance is disclosed, which is used for draining water at the installation position of the door leaf 6 on the car body 1 of the train. The drainage structure includes a flow guiding surface 5 and a threshold assembly 2 provided on the bottom edge surface of the car body 1. The height of the flow guiding surface 5 gradually decreases from the inside of the car body 1 to the outside of the car body 1, which is convenient for the outflow of accumulated water. The surface of the flow guiding surface 5 is designed as a smooth plane, which can reduce the possibility of accumulated water accumulation. The threshold assembly 2 is arranged along the length direction of the car body 1 and fixed in the installation groove 103 at the bottom of the car body 1. The threshold assembly 2 includes an outer threshold 201. The outer threshold 201 is provided with an inner wall 203, an outer wall 202 and a bottom wall 208. A back cavity 4 is formed between the respective wall plates. A sound-absorbing member 3 is arranged in the back cavity 4. The sound-absorbing member 3 can be made of materials such as sound-absorbing cotton. In this embodiment, the sound-absorbing member 3 is made of through-hole aluminum foam with a pore diameter ≥ 3 mm. Among them, a first seal and a second seal are arranged in a stepped and spaced manner between the outer threshold 201 and the flow guiding surface 5. The first seal and the second seal are provided with drain holes for staggered drainage. A third seal 206 for noise reduction is arranged between the outer threshold 201 and the door leaf 6.

[0027] Refer to the attached Figure 1, in this embodiment, the first seal is disposed on the side of the bottom of the outer sill 201 away from the vehicle body 1 (at the lower part of the flow guiding surface 5), and the second seal is disposed on the side of the bottom of the outer sill 201 away from the vehicle body 1 (at the upper part of the flow guiding surface 5). The first seal mainly includes a first seal member 204. One end of the first seal member 204 is fixed to the outer side edge of the bottom of the outer sill 201, and the other end abuts against the flow guiding surface 5. The second seal mainly includes a second seal member 205. One end of the second seal member 205 is fixed to the inner side edge of the bottom of the outer sill 201, and the other end abuts against the flow guiding surface 5. The two layers of seal members can achieve a good sound insulation effect. In this embodiment, a plurality of first drainage holes 207 are also opened on the first seal member 204. The plurality of first drainage holes 207 can be arranged along the length direction of the vehicle body 1. Similarly, in order to effectively drain water, a plurality of second drainage holes 209 are opened on the second seal member 205, and the plurality of second drainage holes 209 are also arranged along the length direction of the vehicle body 1 and are linearly arranged. It should be noted here that in this embodiment, the second drainage holes 209 and the plurality of first drainage holes 207 are arranged in a staggered manner one by one. In this way, the "labyrinth" channel formed by the alternating arrangement of the drainage holes has a significant weakening effect on the noise intensity. The number of drainage holes is set according to the actual situation.

[0028] The above-mentioned third seal member 206 is fixed to the inner wall 203 of the outer sill 201. The side of the third seal member 206 is in contact connection with the door leaf 6. Here, the cross section of the preferred third seal member 206 is a single sealing lip that turns up. The third seal member 206 is pressed against the door leaf 6 to form a side seal, so that the water inlet of the lower drainage structure is reduced. For the sound wave entering the vehicle from above the outer sill 201 and below the door leaf 6, it is equivalent to the reduction of its inlet channel, which is beneficial to improving the sound insulation performance of the lower part of the door system. The device as a whole has a good sound insulation effect and retains a strong drainage function.

[0029] Specific use:

[0030] When the drainage structure in this application is installed on the train door system, when the train encounters rainy weather, the external water flow (b-in) flows along the third seal member 206 to its two end parts from the outside of the vehicle, and then enters the area below the sill assembly 2 (refer to Figure 1 , Figure 2 ), and the area between the door leaf 6 and the sill assembly 2. In the conventional concealed door system, the water flow directly flows into the area below the outer sill 201 from the through-gap between the outer sill 201 and the door leaf 6. Therefore, compared with the conventional concealed door system, the water inlet area of this door system is significantly reduced; because the flow guiding surface 5 of the vehicle body 1 gradually decreases in height from inside to outside, the water flow continues to flow out of the vehicle along the second drainage holes 209 along the trend ( Figure 3), and then flows to the first drain hole 207 (b-out) that is offset from the second drain hole 209 in the X direction, that is, the water flows out of the vehicle body 1 along the "labyrinth" channel, and the combination of seals at each position reduces the noise during vehicle driving.

[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0032] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific circumstances.

Claims

1. A drainage structure with good sound insulation performance, used for drainage at the door system installation location of a vehicle body (1), characterized in that: include: A flow guide surface (5) which is arranged at a certain height on the vehicle body (1); A threshold assembly (2) is fixed on the guide surface (5), the threshold assembly (2) comprising an outer threshold (201), a sound absorbing member (3) being provided in a cavity of the outer threshold (201); a first sealing body and a second sealing body are arranged in a stepped and spaced relationship between the outer threshold (201) and the guide surface (5), drainage holes for displaced drainage are provided on the first sealing body and the second sealing body, and a third sealing member (206) for blocking noise is provided between the outer threshold (201) and the door leaf (6).

2. The drainage structure with good sound insulation performance according to claim 1 is characterized in that: The guide surface (5) is arranged at the edge of the vehicle body (1), and the height of the guide surface (5) gradually decreases from the inside of the vehicle body (1) to the outside of the vehicle body (1).

3. The drainage structure with good sound insulation performance according to claim 1, characterized in that: The cross section of the third sealing member (206) is an upward-turned single sealing lip.

4. The drainage structure with good sound insulation performance according to claim 1, characterized in that: The first sealing body comprises a first sealing member (204), one end of the first sealing member (204) is fixed to the outer side edge of the bottom of the outer door sill (201), and the other end abuts against the guide surface (5).

5. The drainage structure with good sound insulation performance according to claim 4, characterized in that: A plurality of first drainage holes (207) are provided on the first sealing member (204) along the length direction of the vehicle body (1).

6. The drainage structure with good sound insulation performance according to claim 5, characterized in that: The second sealing body comprises a second sealing member (205), one end of the second sealing member (205) being fixed to the inner side edge of the bottom of the outer door sill (201), and the other end of the second sealing member abutting against the guide surface (5).

7. The drainage structure with good sound insulation performance according to claim 6, characterized in that: A plurality of second drainage holes (209) are provided on the second sealing member (205) along the length direction of the vehicle body (1), and the plurality of second drainage holes (209) and the plurality of first drainage holes (207) are arranged in a staggered manner corresponding to each other.

8. The drainage structure with good sound insulation performance according to any one of claims 1 to 7, characterized in that: The sound absorbing member (3) is made of through-hole foam aluminum with a pore diameter of ≥3 mm.

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