A trunk lid support device, a trunk lid assembly, and a vehicle

Abstract

The embodiment of the application discloses a trunk lid supporting device, a trunk lid assembly and a vehicle, and relates to the technical field of vehicle parts. The supporting device comprises a hinge mounting seat, an arcuate arm, a movable arm, a torsion bar, a gear spring damper and a first pin shaft. The hinge mounting seat is fixed on a vehicle body, the arcuate arm is rotationally connected with the hinge mounting seat and fixed with a trunk lid, and the movable arm is rotationally connected with the arcuate arm. The torsion bar drives the movable arm to rotate around the arcuate arm, and drives the arcuate arm to rotate around the hinge mounting seat to open the trunk lid. The gear spring damper is located in the interior of the arcuate arm and comprises a gear buffer assembly and a spring buffer assembly transmission with the gear buffer assembly. The first pin shaft is rotationally connected on the arcuate arm and transmission matched with the gear buffer assembly, and is connected with the movable arm to drive the gear buffer assembly to rotate when the movable arm rotates around the arcuate arm, and the rotation speed of the first pin shaft is limited through the gear buffer assembly and the spring buffer assembly, so that the opening speed of the trunk lid is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle parts, in particular to a trunk lid support device, a trunk lid assembly and a vehicle. BACKGROUND

[0002] In the prior art, the trunk lid of a vehicle generally has the problem of opening too fast and shaking after opening during the opening process. In order to solve the above problems, a damping structure is usually added to the trunk lid. For example, a common damping structure is a gas spring structure.

[0003] However, the damping structure in the form of a gas spring structure needs to occupy a larger installation space in the trunk lid, and the installation position of the gas spring structure needs to be positioned during assembly, thereby increasing the complexity of vehicle assembly. SUMMARY

[0004] In view of the above problems, the present application is proposed in order to provide a trunk lid support device and a vehicle which overcome the above problems or at least partially solve the above problems.

[0005] According to a first aspect of the present application, the present application provides a trunk lid support device, the device comprising:

[0006] a hinge mounting seat fixed to a vehicle body;

[0007] an arcuate arm, one end of the arcuate arm being rotatably connected to the hinge mounting seat, wherein the arcuate arm is fixed with a trunk lid;

[0008] a movable arm, one end of the movable arm being rotatably connected to the arcuate arm;

[0009] a torsion bar, the torsion bar being movably connected to the hinge mounting seat and the movable arm, pushing the torsion bar drives the movable arm to rotate around the arcuate arm, so as to drive the arcuate arm to rotate around the hinge mounting seat, and open the trunk lid;

[0010] a gear spring damper, the gear spring damper being located inside the arcuate arm, wherein the gear spring damper comprises a gear buffer assembly and a spring buffer assembly in transmission with the gear buffer assembly;

[0011] a first pin shaft, the first pin shaft being rotatably connected to the arcuate arm and being in transmission with the gear buffer assembly, wherein the first pin shaft is fixedly connected to one end of the movable arm, so that when the movable arm rotates around the arcuate arm, the first pin shaft drives the gear buffer assembly to rotate, and the rotation speed of the first pin shaft is limited by the gear buffer assembly and the spring buffer assembly, so as to reduce the opening speed of the trunk lid.

[0012] Optionally, the gear buffer assembly comprises:

[0013] a first gear coaxially arranged with the first pin shaft;

[0014] a second gear engaged with the first gear, and the transmission ratio of the first gear and the second gear is greater than 1, wherein the second gear is in transmission connection with the spring buffer assembly.

[0015] Optionally, the gear buffer assembly comprises:

[0016] a first gear coaxially arranged with the first pin shaft;

[0017] a transition gear engaged with the first gear, and in rotational connection with the gear buffer assembly or the arcuate arm, wherein the transmission ratio of the first gear and the transition gear is greater than 1;

[0018] a second gear engaged with the transition gear, and the second gear is in transmission connection with the spring buffer assembly.

[0019] Optionally, the spring buffer assembly comprises:

[0020] a housing fixed inside the arcuate arm, and the housing is provided with a receiving cavity;

[0021] at least two fixed pads located in the receiving cavity and fixed with the housing;

[0022] a movable pad located between the at least two fixed pads and in superposition with the fixed pads, and the fixed pads and the movable pad are respectively provided with transmission channels;

[0023] a transmission shaft rotationally connected to the housing, and the transmission shaft is coaxially arranged with the second gear to drive the transmission shaft to rotate through the second gear, and the movable pad is fixedly connected with the transmission shaft;

[0024] a limiting spring sleeved on the transmission shaft and located between the second gear and the fixed pad, so that the fixed pad and the movable pad are in pressure contact through the limiting spring, and the movable pad is frictionally energy-absorbed with the fixed pad when rotating to reduce the rotating speed of the first pin shaft.

[0025] Optionally, when the movable pad and the fixed pad are respectively a plurality of, the plurality of movable pads and the plurality of fixed pads are staggered.

[0026] Optionally, the fixing pad extends radially away from the edge of the transmission channel and has a fixing lug, and the accommodating cavity is provided with a fixing groove along the axial direction of the transmission shaft, the fixing lug and the fixing groove are in shape cooperation, and the fixing pad is limited in the radial direction.

[0027] Optionally, the movable pad is provided with a plurality of transmission grooves along the radial direction near the edge of the transmission channel, and the outer surface of the transmission shaft is provided with a plurality of transmission teeth extending along the axial direction of the transmission shaft, the transmission teeth and the transmission grooves are in shape cooperation, and the movable pad is limited in the radial direction.

[0028] The movable pad is provided with a plurality of transmission teeth extending along the radial direction near the edge of the transmission channel, and the outer surface of the transmission shaft is provided with a plurality of transmission grooves extending along the axial direction of the transmission shaft, the transmission teeth and the transmission grooves are in shape cooperation, and the movable pad is limited in the radial direction.

[0029] Optionally, the movable arm is provided with a first clamping portion and a second clamping portion separated from each other near the end of the first pin shaft, the first clamping portion is fixedly connected to one end of the first pin shaft, and the second clamping portion is fixedly connected to the other end of the first pin shaft.

[0030] According to the second aspect of the present application, the present application provides a trunk lid assembly, the trunk lid assembly comprising a trunk lid and the trunk lid support device according to any one of the above, wherein the trunk lid is mounted on the trunk lid support device.

[0031] According to the third aspect of the present application, the present application provides a vehicle, the vehicle comprising the trunk lid assembly according to the above.

[0032] Compared with the prior art, the present application comprises a hinge mounting seat, an arcuate arm, a movable arm, a torsion bar, a gear spring damper and a first pin shaft. The hinge mounting seat is fixed to a vehicle body, one end of the arcuate arm is rotationally connected to the hinge mounting seat, the arcuate arm is fixed to a trunk lid, and one end of the movable arm is rotationally connected to the arcuate arm. The torsion bar is movably connected to the hinge mounting seat and the movable arm, and pushing the torsion bar drives the movable arm to rotate around the arcuate arm, so as to drive the arcuate arm to rotate around the hinge mounting seat, and open the trunk lid. The gear spring damper is located in the interior of the arcuate arm, wherein the gear spring damper comprises a gear buffer assembly and a spring buffer assembly in transmission with the gear buffer assembly. The first pin shaft is rotationally connected to the arcuate arm and in transmission with the gear buffer assembly, wherein the first pin shaft is fixedly connected to one end of the movable arm, so that when the movable arm rotates around the arcuate arm, the first pin shaft drives the gear buffer assembly to rotate, and the rotation speed of the first pin shaft is limited by the gear buffer assembly and the spring buffer assembly, so as to reduce the opening speed of the trunk lid. Thus, the slow opening of the trunk lid can be realized by the gear spring damper embedded in the arcuate arm, the opening stability of the trunk lid is ensured, the assembly space in the vehicle is not occupied, and the gear spring damper can be quickly assembled.

[0033] The above description is only a summary of the technical scheme of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the application. Moreover, the same reference numerals in different drawings represent the same or similar elements.

[0035] In the drawings:

[0036] Figure 1 is a perspective structural schematic view of a trunk lid support device provided by an embodiment of the present application;

[0037] Figure 2 is a partial structural schematic view of a trunk lid support device provided by an embodiment of the present application;

[0038] Figure 3 is a schematic view of the installation position of a gear spring damper in an arcuate arm provided by an embodiment of the present application;

[0039] Figure 4 is Figure 3 is an enlarged view of the structure at A in FIG. 1;

[0040] Figure 5 is a perspective view of a gear spring damper according to an embodiment of the present application;

[0041] Figure 6 is a sectional view of a gear spring damper according to an embodiment of the present application;

[0042] Figure 7 is a schematic view of a trunk lid support device according to an embodiment of the present application when the trunk lid is closed;

[0043] Figure 8 is a schematic view of a trunk lid support device according to an embodiment of the present application when the trunk lid is opened;

[0044] Reference numerals: 1, hinge mounting seat; 2, arcuate arm; 3, movable arm; 31, first clamping portion; 32, second clamping portion; 4, torsion bar; 5, gear spring damper; 51, gear buffer assembly; 511, first gear; 512, second gear; 513, transition gear; 52, spring buffer assembly; 521, housing; 5211, accommodating cavity; 5212, fixing groove; 522, fixing washer; 5221, fixing lug; 523, movable washer; 524, transmission shaft; 5241, transmission tooth; 525, limiting spring; 6, first pin shaft; 7, trunk lid. DETAILED DESCRIPTION

[0045] Exemplary embodiments of the present application will be described in greater detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be embodied in various forms without being limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0046] Referring to FIG. 1, Figures 1-8 a trunk lid support device according to an embodiment of the present application can include a hinge mounting seat 1, an arcuate arm 2, a movable arm 3, a torsion bar 4, a gear spring damper 5, and a first pin shaft 6, wherein:

[0047] The hinge mounting seat 1 is fixed on the vehicle body, one end of the arc-shaped arm 2 is rotationally connected with the hinge mounting seat 1, the arc-shaped arm 2 is fixed with the trunk lid 7, and one end of the movable arm 3 is rotationally connected with the arc-shaped arm 2. The torsion bar 4 is movably connected with the hinge mounting seat 1 and the movable arm 3. In one example, the hinge mounting seat 1 is provided with a first mounting hole for the torsion bar 4 to pass through, the torsion bar 4 passes through the first mounting hole and can rotate in the first mounting hole. The other end of the movable arm 3 is provided with a second mounting hole for the torsion bar 4 to pass through, the torsion bar 4 passes through the second mounting hole and can rotate in the second mounting hole. Thus, as shown in Figure 7 , in the state that the trunk lid 7 is closed, the included angle between the movable arm 3 and the arc-shaped arm 2 can be α1°, and the torsion bar 4 is in a deformed state. After the user opens the trunk lid 7, the arc-shaped arm 2 fixed with the trunk lid 7 drives the movable arm 3 to rotate, thereby pushing the torsion bar 4 to rebound, and under the action of the rebounding force of the torsion bar 4 itself, the movable arm 3 continues to drive the arc-shaped arm 2 to rotate around the hinge mounting seat 1, so as to drive the arc-shaped arm 2 to rotate around the hinge mounting seat 1 until the trunk lid 7 is completely opened. As shown in Figure 8 , in the state that the trunk lid 7 is completely opened, the included angle between the movable arm 3 and the arc-shaped arm 2 can be α2°.

[0048] As shown in Figure 3 and Figure 4 , the gear spring damper 5 is located in the interior of the arc-shaped arm 2, which can avoid occupying the assembly space in the vehicle. That is, the gear spring damper 5 can be completely embedded in the arc-shaped arm 2. When assembled, the positioning problem on the outer surface of the arc-shaped arm 2 does not need to be considered. The gear spring damper 5 can include a gear buffer assembly 51 and a spring buffer assembly 52 in transmission with the gear buffer assembly 51. The first pin shaft 6 is rotationally connected with the arc-shaped arm 2 and in transmission with the gear buffer assembly 51, wherein the first pin shaft 6 is fixedly connected with one end of the movable arm 3, so that when the movable arm 3 rotates around the arc-shaped arm 2, the first pin shaft 6 fixedly connected with the movable arm 3 drives the gear buffer assembly 51 to rotate, and the rotation speed of the first pin shaft 6 is limited by the gear buffer assembly 51 and the spring buffer assembly 52, so as to reduce the opening speed of the trunk lid 7. In the case that the rotation speed of the first pin shaft 6 is reduced, the included angle between the movable arm 3 and the arc-shaped arm 2 changes little in unit time. Thus, the slow opening of the trunk lid 7 can be realized by the gear spring damper 5 embedded in the arc-shaped arm 2, which can not only ensure the opening stability of the trunk lid 7, but also can not occupy the assembly space in the vehicle and quickly assemble the gear spring damper 5.

[0049] An optional embodiment of the application, the gear buffer assembly 51 can include a first gear 511 and a second gear 512, the first gear 511 is coaxially arranged with the first pin shaft 6. Coaxial arrangement can be understood as the center axis of the first gear 511 and the center axis of the first pin shaft 6 coincide. The second gear 512 is engaged with the first gear 511, and the transmission ratio of the first gear 511 and the second gear 512 is greater than 1, wherein the second gear 512 is in transmission connection with the spring buffer assembly 52. Thus, the first pin shaft 6 can be speed-reduced and torque-increased by the gear buffer assembly 51. Thus, the deformation rebound force generated by the torsion bar 4 can be buffered. Wherein, the second gear 512 transmits rotary motion to the spring buffer assembly 52, and further buffers through the spring buffer assembly 52.

[0050] Another optional embodiment of the application, referring to Figure 5 and Figure 6 The gear buffer assembly 51 can include a first gear 511, a transition gear 513 and a second gear 512. Among them, the first gear 511 is coaxially arranged with the first pin shaft 6. The transition gear 513 is engaged with the first gear 511, and is in rotary connection with the gear buffer assembly 51, or is in rotary connection with the arcuate arm 2 through bearings and other components. Among them, the transmission ratio of the first gear 511 and the transition gear 513 is greater than 1. Thus, the first pin shaft 6 can be speed-reduced and torque-increased by the first gear 511 and the transition gear 513, so that the deformation rebound force generated by the torsion bar 4 can be buffered. The second gear 512 is engaged with the transition gear 513, and the second gear 512 is in transmission connection with the spring buffer assembly 52. Among them, the second gear 512 transmits rotary motion to the spring buffer assembly 52, and further buffers through the spring buffer assembly 52. Further, by adding the transition gear 513 between the first gear 511 and the second gear 512, the problem that the space between the second gear 512 and the first gear 511 is insufficient to install the spring buffer assembly 52 when the transmission ratio is greater than or equal to a preset transmission threshold can be avoided.

[0051] The person skilled in the art can determine the preset transmission threshold according to the actual application requirements, for example, the preset transmission threshold can be 2, 3, 4 and 5, etc., which is not limited here.

[0052] An optional embodiment of the application, referring to Figure 6As shown, the spring buffering assembly 52 can include a housing 521, at least two fixed pads 522, a movable pad 523, a transmission shaft 524, and a limiting spring 525. The housing 521 is fixed to the interior of the arc-shaped arm 2, and the housing 521 is provided with a receiving cavity 5211. In an example, the housing 521 can include a housing base and a housing end cover, and the receiving cavity 5211 is provided on the housing base, so as to facilitate the assembly of the spring buffering assembly 52 or the spring buffering assembly 52 and the gear buffering assembly 51. The at least two fixed pads 522 are located in the receiving cavity 5211 and fixed to the housing 521. The movable pad 523 is located between the at least two fixed pads 522 and overlaps the fixed pads 522, and the fixed pads 522 and the movable pad 523 are respectively provided with transmission channels. For example, the fixed pads 522 and the movable pad 523 can have a circular ring shape in cross section. The transmission shaft 524 is rotatably connected to the housing 521, and the transmission shaft 524 is coaxially arranged with the second gear 512, so as to be driven to rotate by the second gear 512. The movable pad 523 is fixedly connected to the transmission shaft 524. The limiting spring 525 is sleeved on the transmission shaft 524 and located between the second gear 512 and the fixed pads 522, so as to press the fixed pads 522 and the movable pad 523 by the limiting spring 525. Referring to Figure 5 and Figure 6 As shown, the end of the limiting spring 525 close to the second gear 512 can be further provided with a spring end cover for limiting the position of the limiting spring 525, so as to compress the limiting spring 525 by the spring end cover and press the fixed pads 522 and the movable pad 523 away from the end of the second gear 512. Thus, the movable pad 523 is synchronously rotated with the transmission shaft 524 when the second gear 512 drives the transmission shaft 524 to rotate. Thus, the movable pad 523 is frictionally absorbed by the fixed pads 522 when rotating, so as to reduce the rotating speed of the first pin shaft 6. The gear buffering assembly 51 is used to reduce the speed and increase the torque, and the spring buffering assembly 52 is used to buffer the deformation rebound force generated by the torsion bar 4. Thus, the trunk lid 7 can be slowly opened, the opening stability of the trunk lid 7 is ensured, the assembly space in the vehicle is not occupied, the gear spring damper 5 can be quickly assembled, and the gear spring damper 5 can be applied to the assembly rhythm of the whole vehicle.

[0053] In an optional embodiment, referring to Figure 5 and Figure 6As shown, the plurality of movable pads 523 and the plurality of fixed pads 522 are arranged alternately. The arrangement can be understood as follows: in addition to the two fixed pads 522 at the two ends, the movable pads 523, the fixed pads 522, the movable pads 523, and the fixed pads 522 are arranged in sequence. Thus, the friction area of the movable pads 523 and the fixed pads 522 can be effectively increased when the movable pads 523 rotate. The buffering effect of the spring buffering assembly 52 can be improved.

[0054] An optional embodiment of the application is shown in Figure 5 and Figure 6 As shown, the fixed pad 522 is provided with a fixed lug 5221 extending radially away from the edge of the transmission channel. The accommodating cavity 5211 is provided with a fixed groove 5212 extending along the axial direction of the transmission shaft 524. The fixed lug 5221 and the fixed groove 5212 are matched in shape, and limit the fixed pad 522 in the radial direction. That is, the fixed pad 522 is limited in the axial direction by the pressing of the limiting spring 525. The fixed lug 5221 and the fixed groove 5212 can facilitate the assembly of the fixed pad 522. The number of the fixed lug 5221 and the fixed groove 5212 is matched, and when the number of the fixed lug 5221 is greater than 1, at least two fixed lugs 5221 are arranged at equal angles about the center of the fixed pad 522.

[0055] An optional embodiment of the application is shown in Figure 6 As shown, the fixed pad 522 is provided with a fixed lug 5221 extending radially away from the edge of the transmission channel. The accommodating cavity 5211 is provided with a fixed groove 5212 extending along the axial direction of the transmission shaft 524. The fixed lug 5221 and the fixed groove 5212 are matched in shape, and limit the fixed pad 522 in the radial direction. That is, the fixed pad 522 is limited in the axial direction by the pressing of the limiting spring 525. The fixed lug 5221 and the fixed groove 5212 can facilitate the assembly of the fixed pad 522. The number of the fixed lug 5221 and the fixed groove 5212 is matched, and when the number of the fixed lug 5221 is greater than 1, at least two fixed lugs 5221 are arranged at equal angles about the center of the fixed pad 522.

[0056] An optional embodiment of the application is shown in Figure 3As shown, the end of the movable arm 3 close to the first pin shaft 6 is provided with a first clamping portion 31 and a second clamping portion 32 which are separated from each other, wherein the first clamping portion 31 is fixedly connected with one end of the first pin shaft 6, and the second clamping portion 32 is fixedly connected with the other end of the first pin shaft 6. In other words, the movable arm 3 is fixed with both ends of the first pin shaft 6 through the first clamping portion 31 and the second clamping portion 32 which form openings, so that the rotation stability of the movable arm 3 and the connection stability with the first pin shaft 6 can be improved.

[0057] The embodiment of the present application also provides a trunk lid assembly, which comprises a trunk lid 7 and the trunk lid support device according to any one of the above-mentioned embodiments.

[0058] The embodiment of the present application also provides a vehicle, which comprises the trunk lid assembly according to the above-mentioned embodiments.

[0059] In summary, the embodiment of the present application discloses a trunk lid support device, a trunk lid assembly and a vehicle. The support device comprises a hinge mounting seat 1, an arcuate arm 2, a movable arm 3, a torsion bar 4, a gear spring damper 5 and a first pin shaft 6. The hinge mounting seat 1 is fixed on a vehicle body, one end of the arcuate arm 2 is rotationally connected with the hinge mounting seat 1, the arcuate arm 2 is fixed with a trunk lid 7, and one end of the movable arm 3 is rotationally connected with the arcuate arm 2. The torsion bar 4 is movably connected with the hinge mounting seat 1 and the movable arm 3 respectively, and pushing the torsion bar 4 drives the movable arm 3 to rotate around the arcuate arm 2, so as to drive the arcuate arm 2 to rotate around the hinge mounting seat 1 and open the trunk lid 7. The gear spring damper 5 is located in the interior of the arcuate arm 2, wherein the gear spring damper 5 comprises a gear buffer assembly 51 and a spring buffer assembly 52 which is in transmission with the gear buffer assembly 51. The first pin shaft 6 is rotationally connected with the arcuate arm 2 and in transmission with the gear buffer assembly 51, wherein one end of the movable arm 3 is fixedly connected with the first pin shaft 6, so that when the movable arm 3 rotates around the arcuate arm 2, the first pin shaft 6 drives the gear buffer assembly 51 to rotate, and the rotation speed of the first pin shaft 6 is limited through the gear buffer assembly 51 and the spring buffer assembly 52, so as to reduce the opening speed of the trunk lid 7. Therefore, the slow opening of the trunk lid 7 can be realized through the gear spring damper 5 which is embedded in the arcuate arm 2, the opening stability of the trunk lid 7 is ensured, the assembly space in the vehicle is not occupied, and the gear spring damper 5 can be quickly assembled.

[0060] The various embodiments described in this specification are intended to be illustrative of the claimed invention and not in limitation. Although each embodiment described in this specification has been illustrated with a certain degree of particularity, the scope of the present application should be measured only in terms of the claims.

[0061] It will be readily apparent to those skilled in the art that any combination of the above-described embodiments are possible and, therefore, any combination of the above-described embodiments are within the scope of the present application, but for the sake of brevity, the specification will not be repeated here.

[0062] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been described in detail in order to not obscure the understanding of this description.

[0063] Similarly, it is to be understood that the various features of the present application can be used alone or in any combination depending on the needs of the application, and that the various embodiments of the application can be used in any combination.

[0064] Further, those skilled in the art will appreciate that the features of the various embodiments can be combined with each other, in the same or different embodiments, unless otherwise indicated. For example, in the claims, any of the claimed embodiments can be used in any combination.

Claims

1. A trunk lid support apparatus characterized by comprising: The device comprises: a hinge mounting base (1) fixed to a vehicle body; an arcuate arm (2) having one end rotatably connected to the hinge mounting base (1), wherein the arcuate arm (2) is fixed to a trunk lid (7); a movable arm (3) having one end rotatably connected to the arcuate arm (2); a torsion bar (4) movably connected to the hinge mounting base (1) and the movable arm (3), wherein pushing the torsion bar (4) drives the movable arm (3) to rotate around the arcuate arm (2) to drive the arcuate arm (2) to rotate around the hinge mounting base (1) to open the trunk lid (7); a gear spring damper (5) located inside the arcuate arm (2), wherein the gear spring damper (5) comprises a gear buffer assembly (51) and a spring buffer assembly (52) in transmission with the gear buffer assembly (51); a first pin shaft (6) rotatably connected to the arcuate arm (2) and in transmission with the gear buffer assembly (51), wherein the first pin shaft (6) is fixedly connected to one end of the movable arm (3) to drive the gear buffer assembly (51) to rotate when the movable arm (3) rotates around the arcuate arm (2), and the rotation speed of the first pin shaft (6) is limited by the gear buffer assembly (51) and the spring buffer assembly (52) to reduce the opening speed of the trunk lid (7); wherein the gear buffer assembly (51) comprises: a first gear (511) coaxially arranged with the first pin shaft (6); a second gear (512) in meshing with the first gear (511), and the transmission ratio of the first gear (511) and the second gear (512) is greater than 1, wherein the second gear (512) is in transmission with the spring buffer assembly (52); alternatively, the gear buffer assembly (51) comprises: a first gear (511) coaxially arranged with the first pin shaft (6); a transition gear (513) in meshing with the first gear (511) and rotatably connected to the gear buffer assembly (51) or the arcuate arm (2), wherein the transmission ratio of the first gear (511) and the transition gear (513) is greater than 1; a second gear (512) in meshing with the transition gear (513), and the second gear (512) is in transmission with the spring buffer assembly (52); the spring buffer assembly (52) comprises: an outer shell (521) fixed to the inside of the arcuate arm (2), and the outer shell (521) is provided with a receiving cavity (5211); at least two fixed spacers (522) located in the receiving cavity (5211) and fixed to the outer shell (521). A movable gasket (523) is located between and overlaps with the at least two fixed gaskets (522), and a transmission channel is formed on the fixed gaskets (522) and the movable gasket (523) respectively; A transmission shaft (524) is rotatably connected to the shell (521), and the transmission shaft (524) is coaxially arranged with the second gear (512) to drive the transmission shaft (524) to rotate through the second gear (512), and the movable gasket (523) is fixedly connected with the transmission shaft (524); A limiting spring (525) is sleeved on the transmission shaft (524) and located between the second gear (512) and the fixed gasket (522), so that the fixed gasket (522) and the movable gasket (523) are pressed and contacted through the limiting spring (525), and the movable gasket (523) is frictionally absorbed energy with the fixed gasket (522) when rotating, so as to reduce the rotating speed of the first pin shaft (6).

2. The trunk lid support apparatus according to claim 1, characterized by When the movable gasket (523) and the fixed gasket (522) are respectively a plurality of, the plurality of movable gaskets (523) and the plurality of fixed gaskets (522) are arranged alternately.

3. The trunk lid support apparatus according to claim 1, characterized by The edge of the fixed gasket (522) away from the transmission channel extends radially with a fixed lug (5221), and a fixed groove (5212) is formed in the accommodation cavity (5211) along the axial direction of the transmission shaft (524), and the fixed lug (5221) and the fixed groove (5212) are matched in shape to limit the fixed gasket (522) in the radial direction.

4. The trunk lid support apparatus according to claim 3, characterized by The edge of the movable gasket (523) close to the transmission channel extends radially with a plurality of transmission grooves, and the outer surface of the transmission shaft (524) is provided with a plurality of transmission teeth (5241) extending along the axial direction of the transmission shaft (524), wherein the transmission teeth (5241) and the transmission grooves are matched in shape to limit the movable gasket (523) in the radial direction; or, The edge of the movable gasket (523) close to the transmission channel extends radially with a plurality of transmission teeth (5241), and the outer surface of the transmission shaft (524) is provided with a plurality of transmission grooves extending along the axial direction of the transmission shaft (524), wherein the transmission teeth (5241) and the transmission grooves are matched in shape to limit the movable gasket (523) in the radial direction.

5. The trunk lid support apparatus according to claim 1, characterized by The movable arm (3) is provided with a first clamping portion (31) and a second clamping portion (32) separated from each other at the end close to the first pin shaft (6), wherein the first clamping portion (31) is fixedly connected with one end of the first pin shaft (6), and the second clamping portion (32) is fixedly connected with the other end of the first pin shaft (6).

6. A trunk lid assembly characterized by, The trunk lid assembly comprises a trunk lid (7) and the trunk lid support device according to any one of claims 1-5, wherein the trunk lid (7) is mounted on the trunk lid support device.

7. A vehicle characterized by comprising: The vehicle comprises the trunk lid assembly according to claim 6.

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