Automobile back door

Abstract

The utility model relates to the field of automobile accessories, and discloses an automobile back door which comprises a back door body, a sound insulation assembly is installed in the back door body, a sealing assembly is installed outside the back door body, the sound insulation assembly comprises a sound insulation groove, the sound insulation groove is formed in the back door body, and the sealing assembly is installed in the sound insulation groove. A glue injection opening is formed in the middle of the front portion of the back door body in a penetrating mode, a plurality of first self-tapping screw grooves are formed in the front portion of the back door body in a penetrating mode, and a plurality of second self-tapping screw grooves are formed in the positions, close to the rear end, of the interior of the sound insulation groove in a penetrating mode. The sound insulation material is injected into the sound insulation groove, so that the sound insulation effect of the back door body is improved, and the overall weight of the back door body is reduced; and through the sealing groove and the rubber pad, sealing and fixing of the butt joint are improved, external rainwater entering is reduced, and noise generated by vehicle vibration is lowered.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically a car tailgate. Background Technology

[0002] The tailgate is the door at the rear of a car that can be opened. It is mainly used for loading and unloading goods, opening the trunk to store or retrieve items, and also serves to seal and decorate the rear of the vehicle.

[0003] The publication number CN210852007U discloses a tailgate panel, a tailgate, and a car, wherein the tailgate panel is disposed on the inner side of the tailgate and the tailgate panel is made of plastic.

[0004] The aforementioned tailgate does not require a separate mold for the auxiliary handle groove, nor does it require subsequent secondary fixing, thus reducing processing steps. However, reducing the weight of the tailgate will reduce the sound insulation effect and the internal sound insulation. Furthermore, there are gaps at the joint, allowing external rainwater to easily enter the interior, and vehicle vibration will cause noise at the joint. Utility Model Content

[0005] The purpose of this utility model is to provide a car tailgate to solve the technical problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A car tailgate includes a tailgate body, an internal sound insulation component, and an external sealing component. The sound insulation component includes a sound insulation groove located inside the tailgate body. An injection port is centrally located at the front of the tailgate body. Several first self-tapping screw grooves are located at the front of the tailgate body. Several second self-tapping screw grooves are located at the rear end of the internal sound insulation groove. The first and second self-tapping screw grooves are connected to the same positioning bolt. Two vent holes are located on both sides of the front of the tailgate body.

[0008] Preferably, the interior of the sound insulation groove is used to inject sound insulation material, and the positioning bolt is located inside the first self-tapping screw groove and the second self-tapping screw groove and is threadedly connected.

[0009] Preferably, each of the first self-tapping slots corresponds to each of the second self-tapping slots, and the threads in the first self-tapping slots and the second self-tapping slots match.

[0010] Preferably, the sealing assembly includes a sealing groove, which is located at the front edge of the rear door body. Sealing strips are installed on both sides of the sealing groove, and a rubber pad is installed inside the sealing groove. The space between the inner side of the rubber pad and the sealing groove is filled with cushioning cotton.

[0011] Preferably, the sealing strip is fixed to the inner wall of the sealing groove, and the sealing groove is formed around the front of the rear door body.

[0012] Preferably, the outer and inner sides of the cushioning cotton are respectively bonded and fixed to the rubber pad and the sealing groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1) The car tailgate is equipped with a sound insulation component. The sound insulation material is injected into the sound insulation groove through the glue injection port and the internal air is discharged through the exhaust hole, so that the sound insulation material is evenly filled, improving the sound insulation effect of the tailgate body and reducing the overall weight of the tailgate body. The connection of the positioning bolt enhances the support inside the sound insulation groove and facilitates the injection molding of the tailgate body.

[0015] 2) The car tailgate, by setting a sealing component, connects the tailgate body with the inner panel, and the edge sealing of the inner panel is inserted into the sealing groove. The sealing and fixing of the joint is improved by the compression of the sealing strips on both sides. The sealing of the joint is further improved by the expansion and contraction of the buffer cotton and the contact of the rubber pad, reducing the entry of external rainwater and reducing the noise generated by vehicle vibration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a car tailgate according to an embodiment of the present utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the sound insulation component in an embodiment of this utility model;

[0018] Figure 3 As an embodiment of this utility model Figure 2 Enlarged view of point A;

[0019] Figure 4 This is a partial structural schematic diagram of the sealing assembly in an embodiment of the present utility model;

[0020] Figure 5 As an embodiment of this utility model Figure 4 Enlarged view of point B.

[0021] In the diagram: 1. Rear door body; 2. Sound insulation component; 3. Sealing component; 4. Sound insulation groove; 5. Glue injection port; 6. First self-tapping screw groove; 7. Second self-tapping screw groove; 8. Positioning bolt; 9. Vent hole; 10. Sealing groove; 11. Sealing strip; 12. Rubber pad; 13. Buffer cotton. Detailed Implementation

[0022] 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.

[0023] Example 1

[0024] Combination Figures 1-5 A car tailgate includes a tailgate body 1, a sound insulation component 2 installed inside the tailgate body 1, and a sealing component 3 installed outside the tailgate body 1.

[0025] See Figure 2 and Figure 3 Furthermore, the sound insulation component 2 includes a sound insulation groove 4, which is located inside the rear door body 1. A glue injection port 5 is provided in the center of the front part of the rear door body 1. Several first self-tapping screw grooves 6 are provided in the front part of the rear door body 1. Several second self-tapping screw grooves 7 are provided in the rear part of the interior of the sound insulation groove 4. The first self-tapping screw grooves 6 and the second self-tapping screw grooves 7 are connected by the same positioning bolt 8. Two vent holes 9 are provided on both sides of the front part of the rear door body 1.

[0026] The sound insulation groove 4 is used to inject sound insulation material. The positioning bolt 8 is located inside the first self-tapping screw groove 6 and the second self-tapping screw groove 7 and is threadedly connected. The sound insulation material is filled in the sound insulation groove 4 to achieve the sound insulation effect. The first self-tapping screw groove 6 and the second self-tapping screw groove 7 facilitate the injection molding of the back door body 1.

[0027] Each first self-tapping screw groove 6 corresponds to each second self-tapping screw groove 7. The threads in the first self-tapping screw groove 6 and the second self-tapping screw groove 7 are matched. The sound insulation groove 4 is supported by the connection of the positioning bolt 8.

[0028] Specifically, sound insulation material is injected into the sound insulation groove 4 through the injection port 5 to enhance the sound insulation and protection of the rear door body 1. Air in the sound insulation groove 4 is discharged through the exhaust port 9, so that the sound insulation material is evenly filled in the sound insulation groove 4. The interior of the sound insulation groove 4 is supported by the connection of the positioning bolt 8.

[0029] Example 2

[0030] See Figure 4 and Figure 5Furthermore, based on Embodiment 1, the sealing assembly 3 includes a sealing groove 10, which is located at the front edge of the rear door body 1. Sealing strips 11 are installed on both sides of the sealing groove 10. A rubber pad 12 is installed inside the sealing groove 10, and buffer cotton 13 is filled between the inner side of the rubber pad 12 and the sealing groove 10.

[0031] The sealing strip 11 is fixed to the inner wall of the sealing groove 10. The sealing groove 10 is opened around the front of the rear door body 1. The sealing strip 11 is used to seal the connection of the rear door body 1.

[0032] The outer and inner sides of the buffer cotton 13 are respectively attached and fixed to the rubber pad 12 and the sealing groove 10. Through the expansion and contraction of the buffer cotton 13 and the rubber pad 12, the joint of the rear door body 1 is sealed and the noise generated by the vibration of the vehicle body is reduced.

[0033] Specifically, when the rear door body 1 is connected to the inner panel, the edge of the inner panel is inserted into the sealing groove 10 and is secured by the sealing strip 11 to provide a seal. The sealing at the connection point is further improved by the expansion and contraction of the buffer cotton 13 and the contact of the rubber pad 12.

[0034] In actual operation, the sound insulation material injected into the sound insulation groove 4 is used to improve the sound insulation of the rear door body 1, and the sealing at the joint of the sealing groove 10 is improved.

[0035] When soundproofing, soundproofing materials such as polyurethane foam, soundproofing cotton, and soundproofing adhesive are injected into the soundproofing groove 4 through the injection port 5. The air in the soundproofing groove 4 is discharged through the exhaust port 9, so that the soundproofing material is evenly filled in the soundproofing groove 4 to improve the soundproofing effect of the back door body 1. The first self-tapping screw groove 6 and the second self-tapping screw groove 7 are opened in the corresponding positions using tools, and the interior of the soundproofing groove 4 is supported by the connection of the positioning bolt 8.

[0036] When the door is sealed, the rear door body 1 is aligned with the inner panel, and the edge of the inner panel is inserted into the sealing groove 10. The sealing is fixed and sealed by the compression of the sealing strips 11 on both sides. The sealing at the joint is further improved by the expansion and contraction of the buffer cotton 13 and the contact of the rubber pad 12, reducing the entry of external rainwater and reducing the noise generated by vehicle vibration.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the 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 car tailgate, comprising a tailgate body (1), characterized in that: The rear door body (1) is equipped with a sound insulation component (2) inside and a sealing component (3) is installed on the outside of the rear door body (1). The sound insulation component (2) includes a sound insulation groove (4), which is located inside the rear door body (1). A glue injection port (5) is provided in the center of the front part of the rear door body (1). Several first self-tapping screw grooves (6) are provided in the front part of the rear door body (1). Several second self-tapping screw grooves (7) are provided in the rear part of the sound insulation groove (4). The first self-tapping screw grooves (6) and the second self-tapping screw grooves (7) are connected by the same positioning bolt (8). Two exhaust holes (9) are provided on both sides of the front part of the rear door body (1).

2. The rear hatch of a car according to claim 1, characterized in that: The sound insulation groove (4) is used to inject sound insulation material, and the positioning bolt (8) is located inside the first self-tapping screw groove (6) and the second self-tapping screw groove (7) and is threadedly connected.

3. A car tailgate according to claim 1, characterized in that: Each of the first self-tapping slots (6) corresponds to each of the second self-tapping slots (7), and the threads in the first self-tapping slots (6) and the second self-tapping slots (7) are matched.

4. A car tailgate according to claim 1, characterized in that: The sealing assembly (3) includes a sealing groove (10), which is located at the front edge of the rear door body (1). Sealing strips (11) are installed on both sides of the sealing groove (10). A rubber pad (12) is provided inside the sealing groove (10), and buffer cotton (13) is filled between the inner side of the rubber pad (12) and the sealing groove (10).

5. A car tailgate according to claim 4, characterized in that: The sealing strip (11) is fixed to the inner wall of the sealing groove (10), and the sealing groove (10) is opened around the front of the rear door body (1).

6. A car tailgate according to claim 4, characterized in that: The outer and inner sides of the cushioning cotton (13) are respectively bonded and fixed to the rubber pad (12) and the sealing groove (10).

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