A reinforcing plate for car doors

Abstract

A reinforcing plate for automotive doors, relating to the field of automotive parts technology, includes a reinforcing plate body and a door. The reinforcing plate body is disposed between the inner and outer panels of the door and has an elongated strip structure. Positioning holes are evenly distributed on the flanged portion of the reinforcing plate body. Positioning rods are provided on the door corresponding to the positions of the positioning holes. The positioning rods are inserted into the positioning holes and have a threaded end, which is fixed to the reinforcing plate body by a nut. The reinforcing plate body has several weight-reducing holes. This automotive door reinforcing plate replaces traditional welding, improves installation and positioning accuracy, facilitates disassembly and maintenance, and reduces maintenance costs. Through the combination of sound-absorbing cotton and the double fixing of grooves and protrusions, it ensures stable and long-lasting noise reduction, improving the vehicle's NVH performance.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a reinforcing plate for automotive doors. Background Technology

[0002] Car doors are an important component of the car body, serving not only to shield passengers from wind and rain and to insulate against noise, but also to provide crucial safety protection for occupants in the event of a collision. As a key structural component inside the car door, the strength and impact resistance of the reinforcing plate directly affect the overall safety of the door.

[0003] In the existing technology, automotive door reinforcement plates are mostly connected to the door by welding. This connection method not only makes it difficult to guarantee the positioning accuracy during installation, but also makes disassembly difficult during later maintenance or replacement, increasing maintenance costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a reinforcing plate for automobile doors. It replaces traditional welding, improves installation and positioning accuracy, facilitates disassembly and maintenance, reduces maintenance costs, and ensures stable and long-lasting noise reduction effect through the double fixing of sound-absorbing cotton combined with slots and protrusions, thereby improving the vehicle's NVH performance and effectively solving the problems in the background technology.

[0005] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0006] A reinforcing plate for an automobile door includes a reinforcing plate body and a door. The reinforcing plate body is disposed between the inner and outer panels of the door. The reinforcing plate body has a long strip structure. Positioning holes are evenly distributed on the flanged part of the reinforcing plate body. Positioning rods are provided on the door at positions corresponding to the positioning holes. The positioning rods are inserted into the positioning holes. The ends of the positioning rods have a threaded structure and are fixed to the reinforcing plate body by nuts. Several weight-reducing holes are formed on the reinforcing plate body.

[0007] Furthermore, the side of the reinforcing plate body is uniformly fixed with crisscrossing reinforcing ribs, and the intersection of the reinforcing ribs is a rounded transition with a radius of not less than 3mm.

[0008] Furthermore, a spring washer is provided between the positioning rod and the nut, and a rubber sealing ring is provided between the nut and the reinforcing plate body. The threaded part of the positioning rod is galvanized or chrome-plated, and the threaded surface is coated with a removable micro-expansion thread adhesive.

[0009] Furthermore, the inner wall of the positioning hole is fitted with a nitrile rubber sleeve.

[0010] Furthermore, the weight-reducing hole is equipped with sound-absorbing cotton, which is made of EPDM rubber foam material and is fixed to the inner wall of the weight-reducing hole with environmentally friendly adhesive.

[0011] Furthermore, the inner wall of the weight reduction hole is provided with a groove, and the edge of the sound-absorbing cotton is provided with a protrusion that cooperates with the groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This reinforcing plate for automobile doors has the following advantages:

[0013] 1. The positioning hole and positioning rod are connected by insertion and thread, which replaces the traditional welding, improves the installation and positioning accuracy, facilitates disassembly and maintenance, and reduces maintenance costs.

[0014] 2. The interlacing reinforcing ribs and rounded transition design enhance structural strength, disperse stress, reduce the risk of fatigue damage, and extend service life.

[0015] 3. Acrylic rubber sleeves transform hard contact into elastic contact, reducing wear and vibration noise. Weight reduction holes achieve lightweighting. Sound-absorbing cotton, combined with the double fixation of grooves and protrusions, ensures stable and long-lasting noise reduction effect and improves vehicle NVH performance. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This utility model Figure 1 A magnified structural diagram at point A;

[0018] Figure 3 This is a schematic diagram of the three-dimensional bottom structure of this utility model;

[0019] Figure 4 This utility model Figure 3 A magnified structural diagram at point B.

[0020] In the diagram: 1-Car door, 2-Reinforcing plate body, 3-Nitrile rubber sleeve, 4-Reinforcing rib, 5-Positioning hole, 6-Positioning rod, 7-Nut, 8-Spring washer, 9-Rubber sealing ring, 10-Protrusion, 11-Slot, 12-Weight reduction hole, 13-Sound-absorbing cotton. Detailed Implementation

[0021] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0022] Please see Figure 1-4This embodiment provides a technical solution: a reinforcing plate for an automobile door, including a reinforcing plate body 2 and a door 1. The reinforcing plate body 2 is disposed between the inner panel and the outer panel of the door 1. The reinforcing plate body 2 has a long strip structure. Positioning holes 5 are evenly provided on the flanged part of the reinforcing plate body 2. A positioning rod 6 is provided on the door 1 at the position corresponding to the positioning hole 5. The positioning rod 6 is inserted and engaged with the positioning hole 5. The end of the positioning rod 6 has a threaded structure and is fixed to the reinforcing plate body 2 by a nut 7. The reinforcing plate body 2 has a plurality of weight-reducing holes 12.

[0023] The side of the reinforcing plate body 2 is uniformly fixed with crisscrossing reinforcing ribs 4. The intersection of the reinforcing ribs 4 is a rounded transition with a radius of not less than 3mm. The reinforcing plate body 2 forms a rigid support frame through the crisscrossing reinforcing ribs 4. When the door 1 is subjected to external forces such as collision or compression, the reinforcing ribs 4 can evenly transmit the force to the entire reinforcing plate body 2 and distribute it to the vehicle body through the connection structure with the door 1. The rounded transition at the intersection avoids stress concentration and prevents the reinforcing plate body 2 from deforming or being damaged.

[0024] A spring washer 8 is provided between the positioning rod 6 and the nut 7, and a rubber sealing ring 9 is provided between the nut 7 and the reinforcing plate body 2. The threaded part of the positioning rod 6 is galvanized or chrome-plated, and the threaded surface is coated with a removable micro-expansion thread adhesive. Precise positioning is achieved through the insertion and cooperation of the positioning hole 5 and the positioning rod 6. After the nut 7 is tightened, the elastic preload of the spring washer 8 prevents the nut 7 from loosening. The rubber sealing ring 9 blocks the intrusion path of impurities. The thread treatment of the positioning rod 6 and the micro-expansion thread adhesive enhance corrosion resistance and sealing performance, ensuring stable connection.

[0025] The inner wall of the positioning hole 5 is fitted with a nitrile rubber sleeve 3, and the weight reduction hole 12 is provided with sound-absorbing cotton 13. The sound-absorbing cotton 13 is made of EPDM rubber foam material, which is glued and fixed to the inner wall of the weight reduction hole 12 with environmentally friendly adhesive. The inner wall of the weight reduction hole 12 is provided with a groove 11, and the edge of the sound-absorbing cotton 13 is provided with a protrusion 10 that cooperates with the groove 11. The weight reduction hole 12 reduces the amount of material used in the reinforcing plate body 2, achieving lightweighting. When the vehicle is running, the air flows through the weight reduction hole 12, and the sound-absorbing cotton 13 absorbs sound wave energy through its porous structure, reducing airflow noise. The cooperation between the groove 11 and the protrusion 10 prevents the sound-absorbing cotton 13 from falling off due to vibration, ensuring continuous noise reduction. The nitrile rubber sleeve 3 absorbs the vibration between the positioning rod 6 and the positioning hole 5, reducing metal friction noise.

[0026] The working principle of the reinforcing plate for automobile doors provided by this utility model is as follows: The reinforcing plate body 2 forms a rigid support frame through the crisscrossing reinforcing ribs 4. When the door 1 is subjected to external forces such as collision or compression, the reinforcing ribs 4 can evenly transmit the force to the entire reinforcing plate body 2 and distribute it to the car body through the connection structure with the door 1. The intersection of the arc transition avoids stress concentration and prevents the reinforcing plate body 2 from deforming or being damaged.

[0027] Precise positioning is achieved through the insertion and engagement of positioning hole 5 and positioning rod 6. After the nut 7 is tightened, the elastic preload of spring washer 8 prevents the nut 7 from loosening. Rubber sealing ring 9 blocks the path of impurities. The thread treatment of positioning rod 6 and micro-expansion thread adhesive enhance corrosion resistance and sealing performance, ensuring stable connection.

[0028] The weight reduction hole 12 reduces the amount of material used in the reinforcing plate body 2, achieving lightweighting. When the vehicle is in motion, air flows through the weight reduction hole 12, and the sound-absorbing cotton 13 absorbs sound wave energy through its porous structure, reducing airflow noise. The cooperation between the slot 11 and the protrusion 10 prevents the sound-absorbing cotton 13 from falling off due to vibration, ensuring continuous noise reduction. The nitrile rubber sleeve 3 absorbs the vibration between the positioning rod 6 and the positioning hole 5, reducing metal friction noise.

[0029] It is worth noting that the components disclosed in the above embodiments are all general standard parts or parts known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. 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. For example, a rotary connection can refer to a rotary connection through a bearing.

[0031] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A reinforcement panel for a vehicle door, comprising a reinforcement panel body (2) and a door (1), characterized in that, The reinforcing plate body (2) is located between the inner and outer panels of the car door (1). The reinforcing plate body (2) is a long strip structure. Positioning holes (5) are evenly provided on the flange of the reinforcing plate body (2). Positioning rods (6) are provided on the car door (1) at the positions corresponding to the positioning holes (5). The positioning rods (6) are inserted into the positioning holes (5). The end of the positioning rods (6) has a threaded structure and is fixed to the reinforcing plate body (2) by nuts (7). Several weight-reducing holes (12) are provided on the reinforcing plate body (2).

2. The reinforcing plate for a vehicle door according to claim 1, characterized by: The side of the reinforcing plate body (2) is uniformly fixed with crisscrossing reinforcing ribs (4), and the intersection of the reinforcing ribs (4) is a rounded transition with a radius of not less than 3mm.

3. The reinforcing plate for a vehicle door according to claim 1, characterized by: A spring washer (8) is provided between the positioning rod (6) and the nut (7), and a rubber sealing ring (9) is provided between the nut (7) and the reinforcing plate body (2). The threaded part of the positioning rod (6) is galvanized or chrome-plated, and the threaded surface is coated with a removable micro-expansion thread adhesive.

4. The reinforcing plate for a vehicle door according to claim 1, characterized by: The inner wall of the positioning hole (5) is fitted with a nitrile rubber sleeve (3).

5. A reinforcing plate for an automobile door according to claim 1, characterized in that: The weight reduction hole (12) is provided with sound-absorbing cotton (13), which is a EPDM rubber foam material and is fixed to the inner wall of the weight reduction hole (12) by environmentally friendly adhesive.

6. A reinforcing plate for an automobile door according to claim 5, characterized in that: The inner wall of the weight reduction hole (12) is provided with a slot (11), and the edge of the sound-absorbing cotton (13) is provided with a protrusion (10) that cooperates with the slot (11).

Images