A vehicle body underbody protection plate assembly structure

The combination of snap-fit ​​components and push-pin seats solves the problem of inaccurate installation of the lower body guard plate, achieving high-precision assembly, ensuring the fit between the lower body guard plate and the lower sheet metal, and improving the reliability of assembly and the production line efficiency.

CN224427316UActive Publication Date: 2026-06-30CHONGQING BEIQI MOULD & PLASTIC TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHONGQING BEIQI MOULD & PLASTIC TECH CO LTD
Filing Date
2025-07-18
Publication Date
2026-06-30

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  • Figure CN224427316U_ABST
    Figure CN224427316U_ABST
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Abstract

This utility model relates to the field of underbody protection plate installation technology, specifically to an assembly structure for a vehicle underbody protection plate, including a vehicle underbody protection plate body and an installation component. The installation component includes a snap-fit ​​component, a push pin, a push pin seat, and a vehicle underbody sheet metal. During installation, the snap-fit ​​component mounts the vehicle underbody protection plate body along the X-axis to the side of the body, and then the push pin connects the vehicle underbody protection plate body along the Y-axis to the bottom of the vehicle underbody sheet metal. The vehicle underbody protection plate body forms an avoidance structure through the U-shaped arrangement of the push pin seat. The push pin seat is 20cm long and 4cm wide. A hole is made in the bottom plane of the push pin seat when installing the push pin, which ensures both the precision and accuracy of the avoidance. This avoidance structure can perfectly solve the problem if the product or other mating products cause misalignment during assembly, without affecting the structure, accuracy, and reliability of the plate.
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Description

Technical Field

[0001] This utility model relates to the field of underbody protection plate installation technology, and in particular to an assembly structure for a vehicle body underbody protection plate. Background Technology

[0002] The underbody protection plate of a car has the following functions: Protecting chassis components: It prevents road debris such as stones and mud from scratching and impacting the chassis, avoiding damage to chassis components such as the engine oil pan, transmission, and suspension system, thus extending the service life of these components; Optimizing aerodynamics: It makes airflow under the vehicle smoother, reducing air resistance, thereby improving fuel economy and reducing wind noise to some extent; Preventing corrosion: It isolates chassis components from external water, moisture, salt, and other corrosive substances, reducing the risk of rust and corrosion, and helping to maintain the integrity and strength of the chassis; Reducing noise: It can block road noise and noise generated by chassis components during operation to a certain extent, improving the quietness and comfort inside the vehicle.

[0003] Currently, the most common way to install and position the underbody protection plate is to fix the lower end of the plate to the lower body of the car using screws or a pusher. However, if the product is not properly assembled or deformed due to its own reasons during the assembly process, it will affect the overall assembly of the car and even the rhythm of the entire production line, resulting in significant direct economic losses. Utility Model Content

[0004] The purpose of this utility model is to provide a vehicle body lower guard plate assembly structure, which aims to solve the problem that the most common way to install and position the existing vehicle body lower guard plate is to fix the lower end of the lower guard plate to the lower body of the car with screws or pushers. This is easy to cause assembly failure due to improper product assembly or product deformation due to its own reasons, thus affecting the overall assembly of the car or even the rhythm of the entire production line.

[0005] To achieve the above objectives, this utility model provides a vehicle body underbody protection plate assembly structure, including a vehicle body underbody protection plate body and an installation assembly, wherein the installation assembly includes a snap fastener, a push pin, a push pin seat and a vehicle body sheet metal;

[0006] The push pin seat is fixedly connected to the lower body panel body and is located on one side of the lower body panel body. The buckle component is connected to the lower body panel body and is located on the inner side of the lower body panel body. The push pin is connected to the push pin seat and is located on the inner side of the push pin seat. The lower body sheet metal is connected to the push pin and the buckle component, and is located on one side of the push pin.

[0007] The buckle component includes a D-shaped buckle and a buckle seat. The buckle seat is fixedly connected to the body of the lower protective plate and is located on one side of the body of the lower protective plate. The D-shaped buckle is slidably connected to the buckle seat and is located on one side of the buckle seat.

[0008] The mounting assembly further includes a mounting groove and a limiting hole. The mounting groove is fixedly connected to the body of the lower body guard plate and is located on the outside of the body guard plate. The limiting hole is located on the inside of the mounting groove.

[0009] The mounting assembly also includes a sponge strip, which is fixedly connected to the body of the lower body guard plate and located on the inner side of the body of the lower body guard plate.

[0010] The mounting assembly further includes a connecting plate and a positioning hole. The connecting plate is connected to the body of the lower body guard plate and is located on one side of the body of the lower body guard plate. The positioning hole is provided on the connecting plate.

[0011] This utility model discloses a vehicle body lower guard plate assembly structure. During installation, the lower guard plate body is mounted along the X-axis to the side of the lower guard plate body via a snap-fit ​​component. Then, the lower guard plate body is connected along the Y-axis to the bottom of the lower body sheet metal via a push-pin. The lower guard plate body forms a clearance structure through the U-shaped arrangement of the push-pin seat. The push-pin seat is 20cm long and 4cm wide. A hole is made in the push-pin seat when installing the push-pin, and the hole is located on the bottom plane. This ensures both the precision and accuracy of clearance. If the clearance structure shifts during assembly due to product defects or other mating components, it can completely prevent misalignment. Midea's solution ensures accurate product assembly even after offset, without affecting the product's structure, accuracy, and reliability. Through an avoidance structure design, the lower body guard plate can be precisely installed on the lower body sheet metal, ensuring a close fit. This high-precision assembly helps reduce the cumulative tolerance of assembly variations caused by improper assembly, improves the reliability of the limit structure, and solves the problem that the most common method for installing and positioning the lower body guard plate is to fix the lower end of the guard plate to the lower body of the car with screws or by pushing, which is prone to failure due to improper product assembly or product deformation, thus affecting the overall assembly of the car and even the rhythm of the entire production line. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1This is a structural diagram of a vehicle body lower guard plate assembly structure according to this utility model.

[0014] Figure 2 This is a schematic diagram of the assembly structure of a vehicle body lower guard plate according to the present invention.

[0015] 101-Body lower guard plate body, 102-Mounting components, 103-Snap fasteners, 104-Push rivets, 105-Push rivet seats, 106-Body lower sheet metal, 107-D-type snap fasteners, 108-Snap fastener seats, 109-Mounting grooves, 110-Positioning holes, 111-Sponge strips, 112-Connecting plates, 113-Positioning holes. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0017] Please see Figures 1-2 , Figure 1 This is a structural diagram of a vehicle body lower guard plate assembly structure according to this utility model. Figure 2 This is a schematic diagram of the assembly structure of a vehicle body lower guard plate according to the present invention.

[0018] This utility model provides a vehicle body lower guard plate assembly structure, including a vehicle body lower guard plate body 101 and an installation component 102. The installation component 102 includes a snap-fit ​​component 103, a push pin 104, a push pin seat 105, a vehicle body lower sheet metal 106, a D-type snap-fit ​​107, a snap-fit ​​seat 108, an installation groove 109, a limiting hole 110, a sponge strip 111, a connecting plate 112, and a positioning hole 113. This solution solves the problem that the most common method for installing and positioning existing vehicle body lower guard plates is to fix the lower end of the lower guard plate to the lower body of the vehicle using screws or push pins. This method is prone to problems such as improper assembly or deformation of the product itself, which can lead to assembly failure and thus affect the overall assembly of the vehicle or even the entire production line rhythm.

[0019] In this embodiment, the push-pin seat 105 is fixedly connected to the lower body panel body 101 and is located on one side of the lower body panel body 101. The snap-fit ​​member 103 is connected to the lower body panel body 101 and is located on the inner side of the lower body panel body 101. The push-pin 104 is connected to the push-pin seat 105 and is located on the inner side of the push-pin seat 105. The lower body sheet metal 106 is connected to the push-pin 104 and to the snap-fit ​​member 103. Located on one side of the push pin 104, during installation, the X-axis of the lower body guard plate body 101 is mounted on the side of the lower body guard plate body 101 via the snap-fit ​​member 103. Then, the Y-axis of the lower body guard plate body 101 is connected to the bottom of the lower body sheet metal 106 via the push pin 104. The lower body guard plate body 101 forms an avoidance structure through the U-shaped arrangement of the push pin seat 105. The push pin seat 105 is 20cm long and 4cm wide. When installing the push pin 104, a hole is made in the push pin seat 105. The hole is located on the bottom plane. This ensures both the precision and accuracy of the avoidance. This avoidance structure can perfectly solve the problem if the product or other mating products cause misalignment during assembly. After misalignment, the product can be accurately assembled without affecting its structure, accuracy, and reliability. Through the avoidance structure design, the lower body guard plate can be accurately installed on the lower body sheet metal 106, ensuring a good fit with the lower body sheet metal 106. This high-precision assembly helps reduce the cumulative tolerance of the assembly caused by improper assembly, improves the reliability of the limit structure, and solves the problem that the most common way to install and position the lower body guard plate is to fix the lower end of the lower body guard plate to the lower body of the car with screws or push pins. This is prone to failure to assemble due to improper product assembly or product deformation, which affects the overall assembly of the car and even the rhythm of the entire production line.

[0020] The buckle component 103 includes a D-type buckle 107 and a buckle seat 108. The buckle seat 108 is fixedly connected to the lower body guard plate body 101 and is located on one side of the lower body guard plate body 101. The D-type buckle 107 is slidably connected to the buckle seat 108 and is located on one side of the buckle seat 108. The D-type buckle 107 is installed on the lower body guard plate body 101 through the buckle seat 108. The buckle seat 108 facilitates the installation and removal of the D-type buckle 107.

[0021] Secondly, the mounting assembly 102 also includes a mounting groove 109 and a limiting hole 110. The mounting groove 109 is fixedly connected to the lower body guard plate body 101 and is located on the outside of the lower body guard plate body 101. The limiting hole 110 is located on the inside of the mounting groove 109. The mounting groove 109 is used to install rubber strips or decorative strips, thereby improving the toughness or aesthetics of the bending part of the lower body guard plate body 101. The limiting hole 110 is used to limit the installation position of the rubber strips or decorative strips.

[0022] Furthermore, the mounting assembly 102 also includes a sponge strip 111, which is fixedly connected to the lower body panel body 101 and located on the inner side of the lower body panel body 101. The sponge strip 111 is used to increase the elasticity between the lower body panel body 101 and the lower body sheet metal 106, thereby reducing friction during installation.

[0023] Finally, the mounting assembly 102 also includes a connecting plate 112 and a positioning hole 113. The connecting plate 112 is connected to the vehicle body under guard plate 101 and is located on one side of the vehicle body under guard plate 101. The positioning hole 113 is provided on the connecting plate 112. The positioning hole 113 on the connecting plate 112 can be used for quick positioning and installation of the device, and is suitable for installation and use of the universal vehicle body under guard plate 101.

[0024] In the vehicle body lower guard plate assembly structure of this utility model, during installation, the X-axis of the vehicle body lower guard plate body 101 is installed on the side of the vehicle body lower guard plate body 101 by the buckle member 103. Then, the Y-axis of the vehicle body lower guard plate body 101 is connected to the bottom of the vehicle body lower sheet metal 106 by the push pin 104. The vehicle body lower guard plate body 101 forms an avoidance structure through the U-shaped setting of the push pin seat 105. The push pin seat 105 is 20cm long and 4cm wide. When installing the push pin 104, a hole is made in the push pin seat 105, and the hole is located on the bottom plane. This ensures both the accuracy and precision of the avoidance. This avoidance structure can be used to avoid problems caused by product defects or other misalignments during assembly. When product misalignment occurs, this solution perfectly resolves the issue and ensures accurate product assembly after the misalignment, without affecting the product's structure, accuracy, or reliability. Through the avoidance structure design, the lower body guard plate can be precisely installed on the lower body sheet metal 106, ensuring a close fit. This high-precision assembly helps reduce the cumulative tolerance of assembly variations caused by improper assembly, improves the reliability of the limit structure, and solves the problem that the most common method for installing and positioning the lower body guard plate is to fix the lower end of the guard plate to the lower body of the car using screws or pushers. This method is prone to failure due to improper product assembly or product deformation, which can affect the overall assembly of the car and even the rhythm of the entire production line.

[0025] The above description discloses only a preferred embodiment of the vehicle body lower guard plate assembly structure of this utility model. Of course, it cannot be used to limit the scope of the utility model. Those skilled in the art can understand that all or part of the process of implementing the above embodiments and the equivalent changes made in accordance with the claims of this utility model still fall within the scope of the utility model.

Claims

1. A vehicle body underbody protection plate assembly structure, comprising a vehicle body underbody protection plate body, characterized in that: It also includes mounting components, which include snap-fit ​​components, push pins, push pin seats, and lower body sheet metal; The push pin seat is fixedly connected to the lower body panel body and is located on one side of the lower body panel body. The buckle component is connected to the lower body panel body and is located on the inner side of the lower body panel body. The push pin is connected to the push pin seat and is located on the inner side of the push pin seat. The lower body sheet metal is connected to the push pin and the buckle component, and is located on one side of the push pin.

2. The vehicle body underbody protection plate assembly structure as described in claim 1, characterized in that: The buckle component includes a D-shaped buckle and a buckle seat. The buckle seat is fixedly connected to the body of the lower protective plate and is located on one side of the body of the lower protective plate. The D-shaped buckle is slidably connected to the buckle seat and is located on one side of the buckle seat.

3. The vehicle body underbody protection plate assembly structure as described in claim 2, characterized in that: The mounting assembly also includes a mounting groove and a limiting hole. The mounting groove is fixedly connected to the body of the lower body guard plate and is located on the outside of the body guard plate. The limiting hole is located on the inside of the mounting groove.

4. The vehicle body underbody protection plate assembly structure as described in claim 3, characterized in that: The mounting assembly also includes a sponge strip, which is fixedly connected to the underbody panel body and located on the inner side of the underbody panel body.

5. The vehicle body underbody protection plate assembly structure as described in claim 4, characterized in that: The mounting assembly also includes a connecting plate and a positioning hole. The connecting plate is connected to the body of the lower body guard plate and is located on one side of the body of the lower body guard plate. The positioning hole is provided on the connecting plate.