Vehicle body side cover and rear cover anti-loose connection structure and electric vehicle
Patent Information
- Application Number
- CN202522059956.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-25
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-09-25
AI Technical Summary
但是对于有些型号的车体，其外观件具有特殊形状，由于连接位置处的空间受限，导致同一位置处无法设置相邻的连接点，造成该处受力后易出现变形开缝的技术问题
[0018]本实用新型设置了两种七字钩，其中第一七字钩用于定位和沿垂直对接面方向限位，第二七字钩同时起到沿对接面方向、以及垂直对接面方向的限位作用，即在在同一位置处实现定位、两个方向上的限位功能，从而有效防止对接位置处变形开缝，起到防松作用。同时提高了空间利用率，节约了空间，同时减少了单独设置的卡接位，适用于形状结构紧凑、对空间要求较高的车型。
Smart Images
Figure CN224797113U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric vehicle technology, and in particular to a structure for preventing loosening of the side cover and rear cover of a vehicle body, and an electric vehicle. Background Technology
[0002] Currently, the exterior components of electric vehicles are mainly plastic parts, including side covers, rear covers, and other components. Side covers and rear covers are typically assembled as a single unit using snap-fit and / or screw connections. Different exterior components have different shapes, and the location and number of snap-fit and screw mounting points also vary. For some connection areas, snap-fit and screw connections are usually placed adjacent to each other to prevent the rear cover from detaching from the side cover (i.e., preventing loosening). However, for some vehicle models, the exterior components have special shapes. Due to space constraints at the connection points, adjacent connection points cannot be placed in the same location, causing a technical problem where deformation and gaps can easily occur under stress. Utility Model Content
[0003] In view of the shortcomings of the existing technology, this utility model provides a vehicle body side cover and rear cover anti-loosening connection structure and electric vehicle, the purpose of which is to save installation space while ensuring the stability and reliability of the connection structure of the vehicle body exterior parts.
[0004] The technical solution adopted in this utility model is as follows:
[0005] This utility model provides a vehicle body side cover and rear cover anti-loosening connection structure, including a side cover and a rear cover. The rear cover has a plurality of first mating positions on its left and right sides respectively. The plurality of first mating positions include a first seven-shaped hook and a second seven-shaped hook distributed at intervals. The hook-shaped part of the first seven-shaped hook has a first wedge-tightening surface on its upper side. The hook-shaped part of the second seven-shaped hook has a second wedge-tightening surface and a snap-fit surface extending upward from the second wedge-tightening surface on its upper side.
[0006] The side cover is provided with a second docking position and a third docking position, which correspond to the positions of the first and second hooks, respectively.
[0007] The second docking position includes a positioning groove and a retaining rib on one side thereon. The positioning groove is for the first seven-shaped hook to be inserted for positioning. The retaining rib has a first flat surface at the bottom, which is used to wedge tightly with the first wedge surface to achieve a limit in the direction perpendicular to the docking surface.
[0008] The third docking position includes a positioning groove and a retaining rib on one side. The positioning groove is for the second hook to be inserted for positioning. The bottom of the retaining rib has a second plane and a third plane connected in sequence. The second plane is used to wedge tightly with the first wedge surface to achieve a limit in the direction perpendicular to the docking surface. The third plane is used to clamp with the second wedge surface to achieve a limit in the direction along the docking surface.
[0009] As a preferred technical solution:
[0010] The third mating position also includes a self-tapping connection position, which is located on the side of the positioning groove two away from the retaining rib two and extends into the side cover; the self-tapping connection position is locked to the back cover by a self-tapping screw.
[0011] The hook-shaped part of the second seven-character hook has a hollowed-out section.
[0012] The second plane is at a 90° angle to the third plane, thus forming a groove between the two planes.
[0013] The first wedge surface is a plane that matches the first plane.
[0014] Both the side cover and the back cover are made of plastic.
[0015] The body of the rear cover is integrally formed with the first mating position, and the body of the side cover is integrally formed with the second and third mating positions.
[0016] This utility model provides an electric vehicle, including the aforementioned anti-loosening connection structure between the side cover and the rear cover of the vehicle body.
[0017] The technical solution of this utility model can achieve at least some of the following beneficial effects:
[0018] This utility model features two types of V-shaped hooks. The first V-shaped hook is used for positioning and limiting movement along the perpendicular direction of the mating surface, while the second V-shaped hook simultaneously limits movement along both the mating surface and perpendicular directions. This achieves positioning and limiting movement in two directions at the same location, effectively preventing deformation and gaps at the mating point and preventing loosening. It also improves space utilization, saves space, and reduces the need for separately installed snap-fit positions, making it suitable for vehicles with compact shapes and high space requirements.
[0019] This utility model provides self-tapping connection positions at two positioning grooves that cooperate with the second seven-shaped hook, which can further tighten the threads on the basis of wedge-tight and snap-fit, thereby further improving the stability and reliability of the connection structure.
[0020] Other features and advantages of this invention will be set forth in the following description or may be learned by practicing this invention. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the assembly structure of the back cover and one of the side covers in an embodiment of the present invention.
[0022] Figure 2 This is a schematic diagram of the structure of the back cover according to an embodiment of the present utility model.
[0023] Figure 3 for Figure 2 Enlarged view of section B in the middle.
[0024] Figure 4 This is a schematic diagram of the side cover structure according to an embodiment of the present utility model.
[0025] Figure 5 for Figure 4 Enlarged view of section C.
[0026] Figure 6 for Figure 1 Enlarged view of part A
[0027] Figure 7 for Figure 4 Another perspective.
[0028] Figure 8 for Figure 1 Another perspective.
[0029] Explanation of reference numerals in the attached drawings: 1. Back cover; 2. Side cover; 11. First hook; 12. Second hook; 21. Positioning groove one; 22. Retaining rib one; 23. Positioning groove two; 24. Retaining rib two; 25. Self-tapping connection position; 111. First wedging surface; 121. Second wedging surface; 122. Snap-fit surface; 123. Hollowed-out part; 221. First plane; 241. Second plane; 242. Third plane. Detailed Implementation
[0030] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0031] See Figures 1 to 8 The anti-loosening connection structure of the vehicle body side cover and rear cover in this embodiment includes a side cover 2 and a rear cover 1. The rear cover 1 has a plurality of first mating positions on the left and right sides respectively. The plurality of first mating positions include a first hook 11 and a second hook 12 distributed at intervals. The hook-shaped part of the first hook 11 has a first wedge-tightening surface 111 on the upper side. The hook-shaped part of the second hook 12 has a second wedge-tightening surface 121 on the upper side and a snap-fit surface 122 extending upward from the second wedge-tightening surface 121.
[0032] The side cover 2 is provided with a second docking position and a third docking position corresponding to the positions of the first seven-shaped hook 11 and the second seven-shaped hook 12, respectively;
[0033] The second docking position includes a positioning groove 21 and a retaining rib 22 on one side thereon. The positioning groove 21 is for the first hook 11 to be inserted to achieve positioning. The bottom of the retaining rib 22 is provided with a first flat surface 221, which is used to wedge tightly with the first wedge surface 111 to achieve a limit in the direction perpendicular to the docking surface.
[0034] The third docking position includes a positioning groove 23 and a retaining rib 24 on one side thereon. The positioning groove 23 is for the second hook 12 to be inserted for positioning. The bottom of the retaining rib 24 is provided with a second plane 241 and a third plane 242 connected in sequence. The second plane 241 is used to wedge tightly with the first wedge surface 111 to achieve a limit in the direction perpendicular to the docking surface. The third plane 242 is used to clamp with the second wedge surface 121 to achieve a limit in the direction along the docking surface.
[0035] The mating surface is the assembly surface of the side cover and the back cover.
[0036] The first and second figure-eight hooks are shaped like the number "7". In this embodiment, during installation, the rear cover 1 and side cover 2 can be quickly positioned using positioning groove 1 21 and positioning groove 23. The first retaining rib 22 engages with the first figure-eight hook 11, and the second retaining rib 24 engages with the second figure-eight hook 12, providing initial restraint perpendicular to the mating surface. This prevents the rear cover 1 from shifting backward and the side cover 2 from shifting sideways. However, the first figure-eight hook 11 is a conventional figure-eight hook structure, which only provides restraint perpendicular to the mating surface; the rear cover 1 and side cover 2 are not fully locked together. Additional screws or self-tapping screws are needed to achieve a secure connection along the mating surface. In this embodiment, a snap-fit surface 122 is provided on the second wedge-tightening surface 121 of the hook-shaped portion of the second figure-eight hook 12. This enables multiple functions at the third mating position, including positioning of the rear cover 1 and the side cover 2 (positioning groove 2 and the second figure-eight hook are inserted for positioning), limiting along the direction perpendicular to the mating surface (the second wedge-tightening surface and the second plane are wedge-tightly fitted), and fastening connection along the mating surface (the snap-fit surface and the third plane are snap-fitted). This improves space utilization and can effectively reduce the number of separately set threaded connection positions. It is suitable for vehicles with compact shapes and structures and high space requirements.
[0037] Specifically, the wedge-tightening engagement between the first wedge-tightening surface 111 and the first plane 221, and between the second wedge-tightening surface 121 and the second plane 241, relies on elastic deformation and compression.
[0038] As a preferred embodiment, the hook-shaped portion of the second figure-eight hook 12 is provided with a hollow portion 123. The hollow portion 123 can enhance the elastic deformation and recovery force of the figure-eight hook, and facilitate assembly.
[0039] As a preferred embodiment, the third mating position further includes a self-tapping connection 25, which is preferably located on the side near the positioning groove 23 away from the retaining rib 24 and extending inward to the side cover 2. The self-tapping connection 25 is locked to the rear cover 1 by a self-tapping screw. The self-tapping connection 25 further enables locking in a direction perpendicular to the mating surface, thereby improving the loosening performance.
[0040] As a preferred embodiment, the second plane 241 and the third plane 242 are at 90° to form a slot between the two planes.
[0041] As a preferred embodiment, the first wedge-tightening surface 111 is a plane that matches the first plane 221.
[0042] As a preferred embodiment, both the side cover 2 and the rear cover 1 are made of plastic.
[0043] As a preferred embodiment, the body of the back cover 1 is integrally formed with the first mating position, and the body of the side cover 2 is integrally formed with the second and third mating positions.
[0044] This embodiment also provides an electric vehicle, including the aforementioned anti-loosening connection structure between the side cover and the rear cover of the vehicle body.
[0045] For ease of observation, Figure 1 Only the connection structure between one side cover and the back cover is shown. Those skilled in the art will understand that during actual assembly, the left and right side covers are symmetrically connected to the left and right sides of the back cover with the same structure.
[0046] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A non-loosening connection structure for a vehicle body side cover and rear cover, comprising a side cover (2) and a rear cover (1), characterized in that, The back cover (1) is provided with a plurality of first mating positions on the left and right sides respectively. The plurality of first mating positions include a first seven-shaped hook (11) and a second seven-shaped hook (12) distributed at intervals. The hook-shaped part of the first seven-shaped hook (11) is provided with a first wedge-tightening surface (111) on the upper side. The hook-shaped part of the second seven-shaped hook (12) is provided with a second wedge-tightening surface (121) and a snap-fit surface (122) extending upward from the second wedge-tightening surface (121). The side cover (2) is provided with a second docking position and a third docking position corresponding to the positions of the first hook (11) and the second hook (12), respectively; The second docking position includes a positioning groove (21) and a retaining rib (22) on one side thereon. The positioning groove (21) is used for the first hook (11) to be inserted for positioning. The retaining rib (22) has a first plane (221) at the bottom, which is used to wedge tightly with the first wedge surface (111) to achieve a limit in the direction perpendicular to the docking surface. The third docking position includes a positioning groove (23) and a retaining rib (24) on one side thereon. The positioning groove (23) is for the second hook (12) to be inserted for positioning. The retaining rib (24) has a second plane (241) and a third plane (242) connected in sequence at the bottom. The second plane (241) is used to wedge tightly with the first wedge surface (111) to achieve a limit in the direction perpendicular to the docking surface. The third plane (242) is used to clamp with the second wedge surface (121) to achieve a limit in the direction along the docking surface.
2. The anti-loosening connection structure between the vehicle body side cover and the rear cover according to claim 1, characterized in that, The third mating position also includes a self-tapping connection position (25), which is located on the side of the positioning groove two (23) away from the retaining rib two (24) and extends into the side cover (2); the self-tapping connection position (25) is locked to the rear cover (1) by a self-tapping screw.
3. The anti-loosening connection structure between the vehicle body side cover and the rear cover according to claim 1, characterized in that, The hook-shaped part of the second seven-character hook (12) is provided with a hollow part (123).
4. The anti-loosening connection structure between the vehicle body side cover and the rear cover according to claim 2, characterized in that, The second plane (241) is at 90° to the third plane (242), thus forming a slot between the two planes.
5. The anti-loosening connection structure between the vehicle body side cover and the rear cover according to claim 1, characterized in that, The first wedge-tightening surface (111) is a plane that matches the first plane (221).
6. The anti-loosening connection structure between the vehicle body side cover and the rear cover according to claim 1, characterized in that, Both the side cover (2) and the rear cover (1) are plastic parts.
7. The anti-loosening connection structure between the vehicle body side cover and the rear cover according to claim 1, characterized in that, The body of the rear cover (1) is integrally formed with the first mating position, and the body of the side cover (2) is integrally formed with the second mating position and the third mating position.
8. An electric vehicle, characterized in that, Includes the anti-loosening connection structure for the vehicle body side cover and rear cover as described in any one of claims 1 to 7.