Bottom guard plate and auxiliary frame matching structure and vehicle

Abstract

The utility model discloses a bottom guard plate and subframe cooperation structure and vehicle, the bottom guard plate and subframe cooperation structure comprises a bottom guard plate and a subframe, the middle part of the bottom guard plate is provided with an installation cooperation part, the subframe is provided with an upper limiting part and a lower limiting part which are arranged at an interval along the vertical direction, and the lower limiting part is provided with a lower limiting part. And the mounting matching part is suspended between the upper limiting part and the lower limiting part. The vehicle comprises the bottom guard plate and auxiliary frame matching structure. According to the utility model, the risk that the bottom guard plate is torn and the mounting point falls off due to the vibration of the auxiliary frame can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, concretely relates to a bottom guard plate and auxiliary frame cooperation structure and vehicle. BACKGROUND

[0002] The bottom guard plate is installed below the rear suspension of the automobile, and its main functions are to protect the chassis from being hit and damaged by road obstacles, reduce the wind resistance coefficient of the whole vehicle, prevent dust, and improve the NVH performance of the vehicle. In order to pursue low wind resistance coefficient of the whole vehicle, the front part of the bottom guard plate is connected with the vehicle body or the battery pack, the rear part of the bottom guard plate is connected with the vehicle body or the luggage compartment lower guard plate, and the middle part of the bottom guard plate is connected with the auxiliary frame, so as to realize the wrapping of the auxiliary frame. However, during the driving of the vehicle, the auxiliary frame is forced to displace greatly with the concave-convex of the road surface, the bottom guard plate will bear a large stress, and at the same time, it will continuously and violently vibrate irregularly under external force, thereby causing the serious problems of cracking and abnormal noise of the bottom guard plate. SUMMARY

[0003] Therefore, the utility model aims at providing a bottom guard plate and auxiliary frame cooperation structure and vehicle, which can reduce the risk of tearing and falling of the bottom guard plate caused by the vibration of the auxiliary frame.

[0004] The bottom guard plate and auxiliary frame cooperation structure in the utility model comprises a bottom guard plate and an auxiliary frame, the middle part of the bottom guard plate is provided with a mounting cooperation part, the auxiliary frame is provided with an upper limiting part and a lower limiting part which are arranged in the up-down direction, and the mounting cooperation part is suspended between the upper limiting part and the lower limiting part.

[0005] Further, the auxiliary frame is further provided with a limiting rod part, the middle part of the mounting cooperation part is provided with a limiting hole which penetrates in the up-down direction, and the limiting hole is gap-connected with the limiting rod part.

[0006] Further, the side of the mounting cooperation part, which faces the lower limiting part, is provided with a first flexible part, and there is a gap between the first flexible part and the lower limiting part.

[0007] Further, the side of the mounting cooperation part, which faces the lower limiting part, is provided with a glue groove, the glue groove is provided with a glue element, and the first flexible part is connected with the mounting cooperation part through the glue element.

[0008] Further, the side of the upper limiting part, which faces the mounting cooperation part, is provided with a second flexible part, and there is a gap between the second flexible part and the mounting cooperation part; the limiting rod part is provided with a third flexible part, and there is a gap between the third flexible part and the limiting hole.

[0009] Further, the subframe is provided with a mounting seat, the mounting seat is provided with a through hole, and the top plane of the mounting seat serves as the lower limiting portion.

[0010] Further, the mounting seat is provided with a threaded connection assembly, the threaded connection assembly comprises a bolt body and a nut, the bolt body comprises a bolt head, a light rod section and a threaded section arranged in sequence from top to bottom, the threaded section passes through the through hole from top to bottom and is connected with the nut, the bolt head protrudes radially from the light rod section, the outer diameter of the light rod section is smaller than the inner diameter of the limiting hole and larger than the inner diameter of the through hole, the bolt head serves as the upper limiting portion, and the light rod section serves as the limiting rod portion.

[0011] Further, the second flexible piece and the third flexible piece form an elastic body gasket, the elastic body gasket is sleeved on the light rod section and is attached to the bolt head.

[0012] Further, the front part of the bottom guard plate is connected with the vehicle body or the battery pack, and the rear part of the bottom guard plate is connected with the vehicle body or the luggage compartment lower guard plate.

[0013] The utility model discloses a vehicle, including above -mentioned bottom guard plate and subframe cooperation structure.

[0014] The utility model discloses the beneficial effect is:

[0015] (1) the middle part of the bottom guard plate of the utility model is suspended with the subframe, and the upper limiting portion and the lower limiting portion can constrain the stroke of the Z direction displacement of the bottom guard plate, can additionally increase a protection to the middle part of the bottom guard plate, increase the installation stability of the bottom guard plate, prevent the bottom guard plate from completely falling off. And the Z direction gap between the upper limiting portion and the lower limiting portion makes the middle part of the bottom guard plate not directly contact with the upper limiting portion and the lower limiting portion of the subframe, can reduce the risk of tearing and installation point falling off of the bottom guard plate caused by the Z direction vibration of the subframe. The limiting rod portion and the limiting hole of the utility model form the shaft hole gap cooperation, make the middle part of the bottom guard plate not directly contact with the limiting rod portion of the subframe, can reduce the risk of tearing and installation point falling off of the bottom guard plate caused by the X direction and Y direction vibration of the subframe. In summary, the limiting structure of the upper limiting portion, the lower limiting portion and the limiting rod portion of the utility model and the installation cooperation part have certain gaps in X direction, Y direction and Z direction, make the cooperation position of the bottom guard plate and the subframe can relatively displace in X direction, Y direction and Z direction, can reduce the risk of tearing and installation point falling off of the bottom guard plate caused by the irregular vibration of the subframe in multiple directions.

[0016] (2) the first flexible piece, the second flexible piece and the third flexible piece of the utility model can buffer and absorb energy, realize flexible contact, reduce the abnormal sound and noise caused by the collision or scraping of the subframe and the bottom guard plate, and improve the overall vehicle NVH performance.

[0017] (3) The bolt body of this utility model has three functions: upper side limiting, shaft hole clearance fit and connection and fixation with nut, and the bolt body has low cost. Attached Figure Description

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0019] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0020] Fig. 2 This is an exploded structural diagram of the area surrounding the mounting and mating part of this utility model;

[0021] Fig. 3 This is a partial enlarged cross-sectional view of the area around the mounting and mating part of this utility model.

[0022] The following labels are shown in the attached diagram:

[0023] 1-Bottom guard plate, 101-Mounting mating part, 1011-Limiting hole, 1012-Glue groove, 102-First flexible component, 103-Adhesive element;

[0024] 2-Subframe, 201-Mounting base, 2011-Through hole, 2012-Lower limit part, 202-Bolt body, 2021-Upper limit part, 2022-Limiting rod part, 2023-Threaded section, 203-Nut, 204-Elastomer washer, 2041-Second flexible component, 2042-Third flexible component;

[0025] 3-Battery pack, 301-Front bolt;

[0026] 4- Luggage compartment underbody panel, 401- Rear bolts. Detailed Implementation

[0027] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figs. 1-3 As shown, a bottom guard plate and subframe cooperation structure in this embodiment includes a bottom guard plate 1 and a subframe 2. The bottom guard plate 1 is provided with a mounting and fitting part 101 in the middle. The subframe 2 is provided with an upper limit part 2021 and a lower limit part 2012 spaced apart in the vertical direction. The mounting and fitting part 101 is suspended between the upper limit part 2021 and the lower limit part 2012.

[0029] The mounting fitting portions 101 are provided in plurality at intervals in the left-right direction, for example, the mounting fitting portions 101 can be four or more in number. The mounting fitting portions 101 can be a sink structure protruding downward. The upper limit portion 2021 and the lower limit portion 2012 are the same in number as the mounting fitting portions 101 and correspond one-to-one.

[0030] For the convenience of description, the Z direction refers to the up-down direction of the vehicle, the X direction refers to the front-rear direction of the vehicle, and the Y direction refers to the left-right direction of the vehicle.

[0031] The front and rear portions of the underbody shield 1 are fixed by vehicle structures such as a vehicle body, a battery pack 3, or a luggage compartment lower shield 4, and the middle portion of the underbody shield 1 is suspendedly fitted with the subframe 2. The upper limit portion 2021 and the lower limit portion 2012 can constrain the stroke of the Z direction displacement of the underbody shield 1, can additionally increase a protection at the middle portion of the underbody shield 1, increase the mounting stability of the underbody shield 1, and prevent the underbody shield 1 from completely falling off. Moreover, the Z direction gap between the upper limit portion 2021 and the lower limit portion 2012 makes the middle portion of the underbody shield 1 not directly contact the upper limit portion 2021 and the lower limit portion 2012 of the subframe 2, which can reduce the risk of tearing and mounting point falling off of the underbody shield 1 caused by the Z direction vibration of the subframe 2.

[0032] In the embodiment, the subframe 2 is further provided with a limiting rod portion 2022, and the middle portion of the mounting fitting portion 101 is provided with a limiting hole 1011 penetrating in the up-down direction. The limiting hole 1011 and the limiting rod portion 2022 are gap-fitted.

[0033] The limiting rod portion 2022 and the limiting hole 1011 form an axial hole gap fit, so that the middle portion of the underbody shield 1 does not directly contact the limiting rod portion 2022 of the subframe 2, which can reduce the risk of tearing and mounting point falling off of the underbody shield 1 caused by the X direction and Y direction vibration of the subframe 2.

[0034] The limiting structure composed of the upper limit portion 2021, the lower limit portion 2012, and the limiting rod portion 2022 has a certain gap in the X direction, Y direction, and Z direction with the mounting fitting portion 101, so that the fitting position of the underbody shield 1 and the subframe 2 can relatively displace in the X direction, Y direction, and Z direction, which can reduce the risk of tearing and mounting point falling off of the underbody shield 1 caused by irregular vibration of the subframe 2 in multiple directions.

[0035] In the embodiment, the side of the mounting fitting portion 101 facing the lower limit portion 2012 is provided with a first flexible member 102, and there is a gap between the first flexible member 102 and the lower limit portion 2012.

[0036] When the lower limit portion 2012 moves towards the bottom guard plate 1 due to vibration of the auxiliary frame 2, the first flexible piece 102 can buffer and absorb energy, realize flexible contact, reduce abnormal sound and noise caused by collision or scraping between the auxiliary frame 2 and the bottom guard plate 1, and improve the NVH performance of the vehicle.

[0037] In the embodiment, the side of the mounting and matching portion 101 facing the lower limit portion 2012 is provided with a glue groove 1012, and the glue groove 1012 is provided with a glue element 103, and the first flexible piece 102 is connected with the mounting and matching portion 101 through the glue element 103.

[0038] The glue element 103 can be a double-sided tape or other articles used for gluing connection. After the glue element 103 is installed in the glue groove 1012, the first flexible piece 102 can be fixed on the mounting and matching portion 101 by pressing. The glue groove 1012 and the glue element 103 can simplify assembly.

[0039] In the embodiment, the side of the upper limit portion 2021 facing the mounting and matching portion 101 is provided with a second flexible piece 2041, and there is a gap between the second flexible piece 2041 and the mounting and matching portion 101; the limit rod portion 2022 is sleeved with a third flexible piece 2042, and there is a gap between the third flexible piece 2042 and the limit hole 1011.

[0040] When the upper limit portion 2021 moves towards the bottom guard plate 1 due to vibration of the auxiliary frame 2, the second flexible piece 2041 can buffer and absorb energy, realize flexible contact, reduce abnormal sound and noise caused by collision or scraping between the auxiliary frame 2 and the bottom guard plate 1, and improve the NVH performance of the vehicle.

[0041] When the limit rod portion 2022 moves towards the limit hole 1011 due to vibration of the auxiliary frame 2, the third flexible piece 2042 can buffer and absorb energy, realize flexible contact, reduce abnormal sound and noise caused by collision or scraping between the auxiliary frame 2 and the bottom guard plate 1, and improve the NVH performance of the vehicle.

[0042] The second flexible piece 2041 and the third flexible piece 2042 can be a split structure or an integral structure. The first flexible piece 102, the second flexible piece 2041 and the third flexible piece 2042 can all be made of rubber material.

[0043] In the embodiment, the auxiliary frame 2 is provided with a mounting seat 201, the mounting seat 201 is provided with a through hole 2011, and the top plane of the mounting seat 201 serves as the lower limit portion 2012.

[0044] The mounting seat 201 is a "j" shaped structure, the bottom of the mounting seat 201 is connected with the main body structure of the auxiliary frame 2, and the top plane of the mounting seat 201 forms a support surface which can serve as a lower limiting part 2012.

[0045] In the embodiment, the mounting seat 201 is provided with a threaded connection assembly, which includes a bolt body 202 and a nut 203. The bolt body 202 includes a bolt head, a light rod section and a threaded section 2023 arranged in sequence from top to bottom. The threaded section 2023 penetrates the through hole 2011 from top to bottom and is connected with the nut 203. The bolt head protrudes radially from the light rod section. The outer diameter of the light rod section is smaller than the inner diameter of the limiting hole 1011 and larger than the inner diameter of the through hole 2011. The bolt head serves as the upper limiting part 2021, and the light rod section serves as the limiting rod part 2022.

[0046] The size of the bolt head is larger than the inner diameter of the limiting hole 1011, which can limit the upward displacement of the bottom guard plate 1. The outer diameter of the light rod section is smaller than the inner diameter of the limiting hole 1011, which can realize the shaft hole clearance fit. The threaded section 2023 can be connected with the nut 203 to realize the detachable connection and fixation of the bolt body 202 and the mounting seat 201.

[0047] The bolt body 202 has three functions of upper limiting, shaft hole clearance fit and connection and fixation with the nut 203, and the cost of the bolt body 202 is low.

[0048] In the embodiment, the second flexible part 2041 and the third flexible part 2042 form an elastic body gasket 204, which is sleeved on the light rod section and adheres to the bolt head.

[0049] The integrated structure of the second flexible part 2041 and the third flexible part 2042 can make the installation more convenient.

[0050] In the embodiment, the front part of the bottom guard plate 1 is connected with the vehicle body or the battery pack 3, and the rear part of the bottom guard plate 1 is connected with the vehicle body or the luggage compartment lower guard plate 4. The front part of the bottom guard plate 1 can be connected with the vehicle body or the battery pack 3 through a plurality of front side bolts 301, and the rear part of the bottom guard plate 1 can be connected with the vehicle body or the luggage compartment lower guard plate 4 through a plurality of rear side bolts 401.

[0051] The front part and the rear part of the bottom guard plate 1 are fixed, which can ensure that the middle part of the bottom guard plate 1 can be suspended and matched with the auxiliary frame 2. After the front part and the rear part of the bottom guard plate 1 are fixed, a closed structure is formed, so that the battery pack 3, the bottom guard plate 1 and the luggage compartment lower guard plate 4 form a whole, which is conducive to gas flow guiding during driving, so as to realize optimization of low wind resistance coefficient, reduction of wind resistance and vehicle energy consumption and improvement of endurance.

[0052] The vehicle in the embodiment comprises the above-mentioned bottom guard plate and auxiliary frame cooperation structure.

[0053] Finally, it is explained that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited. Although the utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, and all should be covered in the scope of the claims of the utility model.

Claims

1. A structure of a rocker panel and a subframe cooperation, characterized in that: The bottom guard plate (1) and the auxiliary frame (2) are provided, the middle part of the bottom guard plate (1) is provided with a mounting matching part (101), the auxiliary frame (2) is provided with an upper limiting part (2021) and a lower limiting part (2012) which are arranged in the up-down direction, and the mounting matching part (101) is suspended between the upper limiting part (2021) and the lower limiting part (2012).

2. The underpan and subframe cooperation structure according to claim 1, characterized in that: The auxiliary frame (2) is further provided with a limiting rod part (2022), the middle part of the mounting matching part (101) is provided with a limiting hole (1011) which penetrates in the up-down direction, and the limiting hole (1011) is in clearance fit with the limiting rod part (2022).

3. The underpan and subframe cooperation structure according to claim 2, characterized in that: The side of the mounting matching part (101) facing the lower limiting part (2012) is provided with a first flexible part (102), and there is a gap between the first flexible part (102) and the lower limiting part (2012).

4. The underpan and subframe cooperation structure according to claim 3, characterized in that: The side of the mounting matching part (101) facing the lower limiting part (2012) is provided with a glue groove (1012), the glue groove (1012) is provided with a glue element (103), and the first flexible part (102) is connected with the mounting matching part (101) through the glue element (103).

5. The underpan and subframe cooperation structure according to claim 3, characterized in that: The side of the upper limiting part (2021) facing the mounting matching part (101) is provided with a second flexible part (2041), and there is a gap between the second flexible part (2041) and the mounting matching part (101); the limiting rod part (2022) is sleeved with a third flexible part (2042), and there is a gap between the third flexible part (2042) and the limiting hole (1011).

6. The underpan and subframe cooperation structure according to claim 5, characterized in that: The auxiliary frame (2) is provided with a mounting seat (201), the mounting seat (201) is provided with a through hole (2011), and the top plane of the mounting seat (201) serves as the lower limiting part (2012).

7. The underpan and subframe cooperation structure according to claim 6, characterized in that: The mounting seat (201) is provided with a threaded connection assembly, the threaded connection assembly comprises a bolt body (202) and a nut (203), the bolt body (202) comprises a bolt head, a light rod section and a threaded section (2023) which are sequentially arranged from top to bottom, the threaded section (2023) penetrates through the through hole (2011) from top to bottom and is connected with the nut (203), the bolt head protrudes radially from the light rod section, the outer diameter of the light rod section is smaller than the inner diameter of the limiting hole (1011) and larger than the inner diameter of the through hole (2011), and the bolt head serves as the upper limiting part (2021) and the light rod section serves as the limiting rod part (2022).

8. The underpan and subframe cooperation structure according to claim 7, characterized in that: The second flexible part (2041) and the third flexible part (2042) form an elastomer gasket (204), and the elastomer gasket (204) is sleeved on the light rod section and is attached to the bolt head.

9. The underpan and subframe cooperation structure according to claim 1, characterized in that: The front part of the bottom guard plate (1) is connected with a vehicle body or a battery pack (3), and the rear part of the bottom guard plate (1) is connected with a vehicle body or a luggage compartment lower guard plate (4).

10. A vehicle characterized by: The bottom guard plate and the auxiliary frame matching structure are provided. The bottom guard plate and the auxiliary frame matching structure are provided.

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