A pre-mounting structure for an electric tail wing

Abstract

The present invention provides a pre-mounting structure for an electric tail wing, relating to the field of electric tail wing. The pre-mounting structure includes a spoiler, a mounting bracket, a pre-mounted adjustment structure, and a fixing bolt. The pre-mounted adjustment structure is assembled between the spoiler and the mounting bracket. The spoiler is provided with a first through hole, in which a fixed threaded sleeve is provided. The pre-mounted adjustment structure includes a backing plate and a rotating threaded sleeve. The backing plate is provided with a second through hole, in which the rotating threaded sleeve is installed. The rotating threaded sleeve and the fixed threaded sleeve are threadedly engaged. A hook is fixedly connected to the lower side of the backing plate. The mounting bracket is provided with a connecting hole corresponding to the hook. When the hook is inserted into the connecting hole, the hook and the connecting hole are gap-engaged, and the end of the hook is blocked by the hole edge of the connecting hole. The mounting bracket is also provided with a third through hole. The fixing bolt passes through the third through hole, the rotating threaded sleeve, and the fixed threaded sleeve. The fixing bolt is tightly connected between the spoiler, the backing plate, and the mounting bracket.

Description

Technical Field

[0001] The present invention relates to the technical field of electric tail wing, and in particular to a pre-hanging installation structure of an electric tail wing. Background Art

[0002] The electric rear wing is an aerodynamic kit used to reduce the lift at the rear of a car. It can change the height and angle of the rear wing according to the vehicle speed, and generate downforce through airflow to offset the rear lift, thereby improving the stability of the car.

[0003] The assembly process for the electric rear wing is as follows: first, the base and linkage are installed on the trunk lid, and then the spoiler is pre-mounted on the mounting bracket of the linkage to prepare for subsequent adjustment of the spoiler's position and installation. In fact, during the installation process of the car's rear wing, the car's rear wing needs to be fixed and installed from the inside of the trunk lid. Usually, the car's rear wing is fixed and installed with the trunk lid open. If there is no corresponding pre-mounting structure between the spoiler and the linkage, the spoiler is prone to falling off. Moreover, after the pre-mounting is completed, the horizontal position and height of the spoiler must be further adjusted to ensure that the spoiler can be accurately installed.

[0004] In summary, the prior art lacks a corresponding pre-hanging installation structure, which cannot ensure that the spoiler does not fall when the trunk lid is opened, and at the same time flexibly adjust the plane position and height of the spoiler to ultimately achieve the purpose of precise installation of the spoiler. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a pre-hanging installation structure for an electric rear wing to solve the problem that it is impossible to ensure that the spoiler does not fall off when the trunk lid is opened, and at the same time, the plane position and height of the spoiler cannot be flexibly adjusted, and the spoiler cannot be accurately installed.

[0006] The technical solution of the pre-mounting structure of the electric tail wing of the present invention is:

[0007] The pre-mounting structure of the electric rear wing includes a spoiler, a mounting bracket, a pre-mounted adjustment structure, and fixing bolts. The spoiler is arranged on the upper side of the mounting bracket, and the pre-mounted adjustment structure is assembled between the spoiler and the mounting bracket.

[0008] The spoiler is provided with a first through hole, in which a fixed threaded sleeve is provided; the pre-installed adjustment structure comprises a backing plate and a rotating threaded sleeve, the backing plate is provided with a second through hole, the rotating threaded sleeve is installed in the second through hole, and the rotating threaded sleeve is threadedly engaged with the fixed threaded sleeve;

[0009] A hook piece is fixedly connected to the lower side of the backing plate, and a connecting hole is opened in the mounting bracket corresponding to the hook piece. When the hook piece is inserted into the connecting hole, the hook piece and the connecting hole are loosely matched, and the end of the hook piece is blocked and matched with the edge of the connecting hole.

[0010] The mounting bracket is further provided with a third through hole, the fixing bolt passes through the third through hole, the rotating threaded sleeve and the fixing threaded sleeve, and the fixing bolt is fastened and connected between the spoiler, the backing plate and the mounting bracket.

[0011] Furthermore, the hook member includes a rod portion and a hook head portion that are integrally connected, the length direction of the rod portion extending perpendicularly to the bottom surface of the backing plate, and the length of the rod portion is equal to the axial dimension of the connecting hole;

[0012] The hook head portion is arranged at the end of the rod body portion, and the hook head portion has a stopping surface perpendicular to the length direction of the rod body portion.

[0013] Furthermore, the hook head portion also has a guiding surface inclined to the length direction of the rod body portion.

[0014] Furthermore, two of the hook members are arranged at intervals, and the hook heads of the two hook members are arranged back to back; correspondingly, two of the connecting holes are arranged at intervals, and the two hook members are inserted into the corresponding connecting holes.

[0015] Furthermore, the two hook members are spaced apart in the width direction of the spoiler, the connecting hole is a long hole, and the length direction of the long hole is parallel to the length direction of the spoiler.

[0016] Furthermore, a groove is provided on the lower side of the backing plate corresponding to the second through hole, and the rotating threaded sleeve includes an external threaded sleeve body and an annular convex edge, and the annular convex edge is matched with the groove in a concave-convex manner.

[0017] Furthermore, the fixed threaded sleeve is pre-embedded and fixed in the spoiler, and the fixed threaded sleeve includes a large-diameter sleeve and a small-diameter sleeve coaxially arranged;

[0018] The large diameter sleeve is located at the lower part of the small diameter sleeve. The inner wall of the large diameter sleeve is provided with a large diameter internal thread. The rotating thread sleeve is provided with an external thread. The external thread of the rotating thread sleeve matches the large diameter internal thread.

[0019] Furthermore, the inner wall of the small-diameter sleeve is provided with a small-diameter internal thread, the external thread of the fixing bolt matches the small-diameter internal thread, and the aperture of the rotating threaded sleeve is larger than the aperture of the small-diameter internal thread.

[0020] Furthermore, the hook piece is a mushroom-shaped hook piece, and a cross slot is provided at the central axis position of the mushroom-shaped hook piece. The mushroom-shaped hook includes a main rod part and a mushroom head, and the mushroom head is connected to the end of the main rod part. The outer diameter of the main rod part is smaller than the inner diameter of the connecting hole, and the outer diameter of the mushroom head is larger than the inner diameter of the connecting hole.

[0021] Furthermore, the hook piece is a mushroom-shaped hook piece, the connecting hole includes a large circular hole and a small circular hole that are connected to each other, the end of the mushroom-shaped hook piece is gap-fitted with the large circular hole, the end of the mushroom-shaped hook piece is stop-fitted with the small circular hole, and the small circular hole is located in the gravity sliding direction of the spoiler when it is pre-hung and installed.

[0022] Beneficial Effects: The pre-mounted installation structure of the electric rear wing utilizes a spoiler, a mounting bracket, a pre-installed adjustment structure, and fixing bolts. The pre-installed adjustment structure is assembled between the spoiler and the mounting bracket. A fixed threaded sleeve is disposed in the first through-hole of the spoiler, and a rotating threaded sleeve is mounted in the second through-hole of the backing plate. The rotating threaded sleeve engages with the fixed threaded sleeve, and screwing the rotating threaded sleeve pre-connects the pre-installed adjustment structure to the spoiler. The pre-installed adjustment structure and the spoiler are then assembled integrally on the mounting bracket.

[0023] A hook is fixedly attached to the underside of the backing plate, and a connection hole is defined on the mounting bracket corresponding to the hook. When the hook is inserted into the connection hole, the end of the hook engages with the edge of the hole to prevent the spoiler from falling when the trunk lid is opened, improving the reliability of the pre-installed installation. Furthermore, the clearance between the hook and the connection hole allows the position of the pre-installed adjustment structure to be adjusted horizontally on the mounting bracket, thereby changing the position of the spoiler within the installation plane.

[0024] The pre-mounted mounting structure of the electric rear wing allows for adjustment of its planar position relative to the mounting bracket via a pre-installed adjustment mechanism. The height of the spoiler relative to the base plate can be adjusted by rotating the threaded and fixed sleeves, ultimately achieving precise installation of the spoiler. Finally, once the spoiler's planar position and height are adjusted, the spoiler, base plate, and mounting bracket are compressed and secured with fixing bolts. The fixing bolts apply a preload to the two sleeves, ensuring the threaded connection remains secure and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a partial perspective view of the pre-hanging installation structure of the electric tail wing in the specific embodiment 1 of the pre-hanging installation structure of the electric tail wing of the present invention;

[0026] Figure 2 for Figure 1 A three-dimensional schematic diagram of the mounting bracket and pre-installed adjustment structure;

[0027] Figure 3 Schematic cross-sectional view of the pre-hanging installation structure of the electric tail wing in the specific embodiment 1 of the pre-hanging installation structure of the electric tail wing of the present invention;

[0028] Figure 4 It is a partial perspective view of the pre-hanging installation structure of the electric tail wing in the specific embodiment 2 of the pre-hanging installation structure of the electric tail wing of the present invention;

[0029] Figure 5 It is a partial three-dimensional view of the pre-hanging installation structure of the electric tail wing in the specific embodiment 3 of the pre-hanging installation structure of the electric tail wing of the present invention.

[0030] Figure 1 - Figure 3 Middle: 1-spoiler, 11-fixed threaded sleeve, 111-large diameter sleeve, 112-small diameter sleeve, 2-mounting bracket, 20-connecting hole, 21-third through hole;

[0031] 3-pre-installed adjustment structure, 30-shim plate, 31-rotating threaded sleeve, 32-second through hole, 33-hooking piece, 4-fixing bolt;

[0032] Figure 4 Middle: 2-mounting bracket, 20a-connecting hole, 33a-mushroom-shaped hook, 330a-cross slot, 331a-main rod part, 332a-mushroom head;

[0033] Figure 5 Middle: 2-mounting bracket, 20b-connecting hole, 201b-large round hole, 202b-small round hole, 33b-mushroom-shaped hook. DETAILED DESCRIPTION

[0034] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0035] Specific embodiment 1 of the pre-hanging installation structure of the electric tail wing of the present invention is as follows Figures 1 to 3 As shown, the pre-hanging installation structure of the electric rear wing includes a spoiler 1, a mounting bracket 2, a pre-installed adjustment structure 3 and a fixing bolt 4. The spoiler 1 is arranged on the upper side of the mounting bracket 2, and the pre-installed adjustment structure 3 is assembled between the spoiler 1 and the mounting bracket 2; the spoiler 1 is provided with a first through hole, and a fixed threaded sleeve 11 is provided in the first through hole; the pre-installed adjustment structure 3 includes a pad 30 and a rotating threaded sleeve 31, the pad 30 is provided with a second through hole 32, the rotating threaded sleeve 31 is installed in the second through hole 32, and the rotating threaded sleeve 31 is threadedly matched with the fixed threaded sleeve 11.

[0036] A hook piece 33 is fixedly connected to the lower side of the pad 30, and a connecting hole 20 is opened in the mounting bracket 2 corresponding to the hook piece 33. When the hook piece 33 is inserted into the connecting hole 20, the hook piece 33 and the connecting hole 20 are clearance-fitted, and the end of the hook piece 33 is blocked by the hole edge of the connecting hole 20; the mounting bracket 2 also has a third through hole 21, and the fixing bolt 4 passes through the fixed threaded sleeve 11, the rotating threaded sleeve 31 and the third through hole 21, and the fixing bolt 4 is fastened between the spoiler 1, the pad 30 and the mounting bracket 2.

[0037] The pre-mounted installation structure of the electric rear wing utilizes a spoiler 1, a mounting bracket 2, a pre-installed adjustment structure 3, and fixing bolts 4. The pre-installed adjustment structure 3 is assembled between the spoiler 1 and the mounting bracket 2. A fixed threaded sleeve 11 is disposed in the first through-hole of the spoiler 1, and a rotating threaded sleeve 31 is mounted in the second through-hole 32 of the backing plate 30. The rotating threaded sleeve 31 is threadedly engaged with the fixed threaded sleeve 11. Twisting the rotating threaded sleeve 31 pre-connects the pre-installed adjustment structure 3 to the spoiler 1. The pre-installed adjustment structure 3 and the spoiler 1 are then assembled integrally onto the mounting bracket 2.

[0038] A hook 33 is fixedly attached to the underside of the backing plate 30. A connection hole 20 is defined in the mounting bracket 2 corresponding to the hook 33. When the hook 33 is inserted into the connection hole 20, the end of the hook 33 engages with the edge of the hole 20, preventing the spoiler from falling when the trunk lid is opened, thereby improving the reliability of the pre-installed installation. Furthermore, the clearance between the hook 33 and the connection hole 20 allows the pre-installed adjustment structure 3 to be adjusted horizontally on the mounting bracket 2, thereby changing the position of the spoiler 1 within the installation plane.

[0039] The pre-mounted installation structure of the electric rear wing uses a pre-installed adjustment structure 3 to adjust the planar position relative to the mounting bracket 2. By rotating the threaded sleeve 31 and the fixed threaded sleeve 11, the height of the spoiler 1 relative to the backing plate 30 can be adjusted, ultimately achieving the purpose of precisely installing the spoiler 1. Finally, after the planar position and height of the spoiler 1 are adjusted, the spoiler 1, backing plate 30, and mounting bracket 2 are compressed and fixed using the fixing bolt 4. The fixing bolt 4 applies a preload force to the two threaded sleeves, ensuring that the threaded connection will not loosen and the fixation is more stable and reliable.

[0040] In this embodiment, the hook member 33 includes an integrally connected rod portion and a hook head portion. The rod portion extends perpendicularly to the bottom surface of the backing plate 30, and the length of the rod portion is equal to the axial dimension of the connecting hole 20. The hook head portion is disposed at the end of the rod portion and has a stop surface perpendicular to the length of the rod portion. The hook head portion of the hook member 33 forms a stop fit with the edge of the connecting hole 20, and the length of the rod portion of the hook member 33 corresponds to the axial dimension of the connecting hole 20, ensuring that the stop surface of the hook head portion always fits with the bottom surface of the mounting bracket 2. This allows the pre-installed adjustment structure 3 to be moved within the mounting plane while preventing the pre-installed adjustment structure 3 from detaching from the mounting bracket, thereby preventing the spoiler 1 from falling.

[0041] As a further preferred embodiment, the hook portion further comprises a guide surface that is inclined relative to the length direction of the rod portion. By designing the guide surface on the hook portion, the hook member 33 can be smoothly inserted into the connecting hole 20 during installation, thereby reducing the difficulty of the assembly operation and improving the efficiency of the assembly operation.

[0042] Two hooks 33 are spaced apart, with their hook heads facing each other. Accordingly, two connecting holes 20 are spaced apart, and the two hooks 33 are inserted into corresponding connecting holes 20. Specifically, the two hooks 33 are spaced apart across the width of the spoiler 1. The connecting holes 20 are elongated, with their lengths parallel to the length of the spoiler 1. After the pre-installed adjustment structure 3 is attached via the two hooks 33, the left-right position of the pre-installed adjustment structure 3 and the spoiler 1 can be adjusted along the length of the elongated holes to ensure precise installation of the spoiler 1.

[0043] In this embodiment, a groove is provided on the underside of the backing plate 30, corresponding to the second through-hole 32. The rotating threaded sleeve 31 comprises an externally threaded sleeve body and an annular ridge that mates with the groove. When the backing plate 30 is attached to the upper side of the mounting bracket 2, the rotating threaded sleeve 31 can only rotate about the axis of the second through-hole 32, thereby driving the fixed threaded sleeve 11 and the spoiler 1 to accurately adjust their heights.

[0044] Correspondingly, the fixed threaded sleeve 11 is pre-embedded and fixed in the spoiler 1. The fixed threaded sleeve 11 comprises a coaxially arranged large-diameter sleeve 111 and a small-diameter sleeve 112. The large-diameter sleeve 111 is located below the small-diameter sleeve 112. The inner wall of the large-diameter sleeve 111 is provided with a large-diameter internal thread. The rotating threaded sleeve 31 is provided with an external thread, and the external thread of the rotating threaded sleeve 31 matches the large-diameter internal thread. Furthermore, the inner wall of the small-diameter sleeve 112 is provided with a small-diameter internal thread. The external thread of the fixing bolt 4 matches the small-diameter internal thread. The aperture of the rotating threaded sleeve 31 is larger than the aperture of the small-diameter internal thread.

[0045] In addition, a hexagonal inner hole is provided inside the rotating threaded sleeve 31, corresponding to the annular ridge. The inner contour of the hexagonal inner hole is larger than the inner hole of the rotating threaded sleeve 31, preventing the hexagonal inner hole from being too small and interfering with the penetration of the fixing bolt 4. During installation, the pre-installed adjustment structure 3 is first pre-installed on the spoiler 1. An Allen wrench is inserted into the hexagonal inner hole of the rotating threaded sleeve 31, and the rotating threaded sleeve 31 is rotated to pre-connect it with the fixed threaded sleeve 11. Next, the pre-installed adjustment structure 3 is installed on the mounting bracket 2 together with the spoiler 1. The rotating threaded sleeve 31 is then screwed to drive the fixed threaded sleeve 11 up and down, allowing the position of the spoiler 1 in the Z direction of the vehicle body to be precisely adjusted.

[0046] In the specific embodiment 2 of the pre-hanging installation structure of the electric tail wing of the present invention, the structural form of the hook member and the connecting hole can be flexibly designed to meet different usage requirements. The difference between the hook member and the connecting hole in the specific embodiment 1 is that Figure 4 As shown, the hook member is a mushroom-shaped hook member 33a, and a cross slot 330a is provided at the central axis position of the mushroom-shaped hook member 33a. The mushroom-shaped hook 33a includes a main rod portion 331a and a mushroom head 332a. The mushroom head 332a is connected to the end of the main rod portion 331a. The outer diameter of the main rod portion 331a is smaller than the inner diameter of the connecting hole 20a, and the outer diameter of the mushroom head 332a is larger than the inner diameter of the connecting hole 20a.

[0047] Specifically, the mushroom head 332a has a circular outer contour, and the connecting hole 20a is a circular hole. During installation, the mushroom-shaped hook member 33a is squeezed and deformed toward the center, allowing the mushroom head 332a of the mushroom-shaped hook member 33a to smoothly pass through the connecting hole 20a of the mounting bracket 2. After passing through, the mushroom head 332a automatically returns to its open state. At this time, the main rod portion 331a can move in a plane within the connecting hole 20a, while the mushroom head 332a forms a stop with the edge of the connecting hole 20a, preventing the pre-installed adjustment structure and the spoiler from falling off the mounting bracket 2.

[0048] In the specific embodiment 3 of the pre-hanging installation structure of the electric tail wing of the present invention, the structural form of the hook member and the connecting hole can be flexibly designed to meet different usage requirements. The difference between the hook member and the connecting hole in the specific embodiment 1 is that Figure 5 As shown, the hook member is a mushroom-shaped hook member 33b, the connecting hole 20b includes a large circular hole 201b and a small circular hole 202b that are connected to each other, the end of the mushroom-shaped hook member 33b is clearance-fitted with the large circular hole 201b, the end of the mushroom-shaped hook member 33b is stop-fitted with the small circular hole 202b, and the small circular hole 202b is located in the gravity sliding direction of the spoiler when it is pre-hung and installed.

[0049] That is, when installing the spoiler with the trunk lid open, the end of the mushroom-shaped hook 33b is first inserted into the large circular hole 201b of the connecting hole 20b. As the spoiler slides downward under the action of its gravity, the mushroom-shaped hook 33b enters the small circular hole 202b of the connecting hole 20b. At this time, the end of the mushroom-shaped hook 33b engages with the small circular hole 202b. The fixing bolt is installed in the third through hole, the rotating threaded sleeve, and the fixed threaded sleeve. When the fixing bolt is loosened, the position of the spoiler can be flexibly adjusted within the installation plane and the pre-installed adjustment structure and the spoiler are prevented from falling off the mounting bracket 2.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A pre-mounting structure for an electric tail wing, characterized in that: The device comprises a spoiler, a mounting bracket, a pre-installed adjustment structure and a fixing bolt, wherein the spoiler is arranged on the upper side of the mounting bracket, and the pre-installed adjustment structure is assembled between the spoiler and the mounting bracket; The spoiler is provided with a first through hole, and a fixed threaded sleeve is provided in the first through hole; the pre-assembled adjustment structure includes a backing plate and a rotating threaded sleeve, the backing plate is provided with a second through hole, the rotating threaded sleeve is installed in the second through hole, the rotating threaded sleeve is threadedly matched with the fixed threaded sleeve, and the fixed threaded sleeve is pre-embedded and fixed in the spoiler, and the rotating threaded sleeve can be screwed to pre-connect the pre-assembled adjustment structure with the spoiler. When the backing plate is attached to the upper side surface of the mounting bracket, the rotating threaded sleeve rotates around the axis of the second through hole, driving the fixed threaded sleeve and the spoiler to accurately adjust the height of the spoiler relative to the backing plate; A hook is fixedly connected to the lower side of the backing plate, and the mounting bracket is provided with a connecting hole corresponding to the hook. When the hook is inserted into the connecting hole, the end of the hook is engaged with the hole edge of the connecting hole, and the hook is loosely engaged with the connecting hole. The pre-installed adjustment structure is translated on the mounting bracket, thereby driving the spoiler to translate relative to the mounting bracket. The mounting bracket is further provided with a third through hole, the fixing bolt passes through the third through hole, the rotating threaded sleeve and the fixing threaded sleeve, and the fixing bolt is fastened and connected between the spoiler, the backing plate and the mounting bracket.

2. The pre-hanging installation structure of the electric tail wing according to claim 1 is characterized in that: The hook member includes a rod portion and a hook head portion that are integrally connected, wherein the length direction of the rod portion extends perpendicular to the bottom surface of the backing plate, and the length of the rod portion is equal to the axial dimension of the connecting hole; The hook head portion is arranged at the end of the rod body portion, and the hook head portion has a stopping surface perpendicular to the length direction of the rod body portion.

3. The pre-hanging installation structure of the electric tail wing according to claim 2 is characterized in that: The hook head portion further comprises a guide surface inclined to the length direction of the rod body portion.

4. The pre-mounting structure of the electric tail wing according to claim 3, characterized in that: There are two hook members spaced apart, with the hook heads of the two hook members facing each other. Correspondingly, there are two connecting holes spaced apart, with the two hook members plugged into the corresponding connecting holes.

5. The pre-hanging installation structure of the electric tail wing according to claim 4 is characterized in that: The two hook members are spaced apart in the width direction of the spoiler, and the connecting hole is a long hole, and the length direction of the long hole is parallel to the length direction of the spoiler.

6. The pre-hanging installation structure of the electric tail wing according to claim 1 is characterized in that: A groove is provided on the lower side of the backing plate corresponding to the second through hole. The rotating threaded sleeve includes an external threaded sleeve body and an annular convex edge. The annular convex edge is matched with the groove in a concave-convex manner.

7. The pre-hanging installation structure of the electric tail wing according to claim 6, characterized in that: The fixed threaded sleeve comprises a large-diameter sleeve and a small-diameter sleeve coaxially arranged; The large diameter sleeve is located at the lower part of the small diameter sleeve. The inner wall of the large diameter sleeve is provided with a large diameter internal thread. The rotating thread sleeve is provided with an external thread. The external thread of the rotating thread sleeve matches the large diameter internal thread.

8. The pre-mounting structure of the electric tail wing according to claim 7, characterized in that: The inner wall of the small-diameter sleeve is provided with a small-diameter internal thread, the external thread of the fixing bolt matches the small-diameter internal thread, and the aperture of the rotating threaded sleeve is larger than the aperture of the small-diameter internal thread.

9. The pre-hanging installation structure of the electric tail wing according to claim 1, characterized in that: The hook piece is a mushroom-shaped hook piece, and a cross slot is provided at the central axis position of the mushroom-shaped hook piece. The mushroom-shaped hook includes a main rod part and a mushroom head, and the mushroom head is connected to the end of the main rod part. The outer diameter of the main rod part is smaller than the inner diameter of the connecting hole, and the outer diameter of the mushroom head is larger than the inner diameter of the connecting hole.

10. The pre-hanging installation structure of the electric tail wing according to claim 1, characterized in that: The hook piece is a mushroom-shaped hook piece, and the connecting hole includes a large circular hole and a small circular hole that are connected to each other. The end of the mushroom-shaped hook piece is gap-fitted with the large circular hole, and the end of the mushroom-shaped hook piece is stop-fitted with the small circular hole, and the small circular hole is located in the gravity sliding direction of the spoiler when it is pre-hung and installed.

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