CN116641611A - Trunk lid strutting arrangement, trunk lid assembly and vehicle - Google Patents

Abstract

The embodiment of the invention discloses a trunk cover supporting device, a trunk cover assembly and a vehicle, and relates to the technical field of vehicle parts. The support device comprises a hinge mounting seat, an arched arm, a movable arm, a torsion bar, a gear spring damper and a first pin shaft. The hinge mounting seat is fixed on the vehicle body, the arched arm is rotationally connected with the hinge mounting seat and is fixed with the trunk cover, and the movable arm is rotationally connected with the arched arm. The torsion bar drives the movable arm to rotate around the arched arm and drives the arched arm to rotate around the hinge mounting seat to open the trunk cover. The gear spring damper is positioned inside the arcuate arm and includes a gear cushioning assembly and a spring cushioning assembly in communication with the gear cushioning assembly. The first pin shaft is rotatably connected to the arcuate arm and is in transmission fit with the gear buffer assembly, the gear buffer assembly is driven to rotate when the movable arm rotates around the arcuate arm, and the rotating speed of the first pin shaft is limited through the gear buffer assembly and the spring buffer assembly so as to reduce the opening speed of the trunk cover.

Description

Trunk lid strutting arrangement, trunk lid assembly and vehicle

Technical Field

The invention relates to the technical field of vehicle parts, in particular to a trunk cover supporting device, a trunk cover assembly and a vehicle.

Background

In the prior art, a trunk lid of a vehicle generally has the problems of too high opening speed and shaking after opening in the opening process, and in order to solve the problems, a damping structure is generally added on the trunk lid. For example, a common damping structure is a gas spring structure.

However, the damping structure in the form of the pneumatic spring structure needs to occupy a larger installation space in the trunk lid, and the installation position of the pneumatic spring structure needs to be positioned in the assembly process, so that the complexity of the whole automobile assembly is improved.

Disclosure of Invention

The present invention has been made in view of the above-mentioned problems, and provides a trunk lid supporting device and a vehicle that overcome or at least partially solve the above-mentioned problems.

According to a first aspect of the present invention there is provided a trunk lid support device, the device comprising:

the hinge installation seat is fixed on the vehicle body;

the end part of the arched arm is rotationally connected with the hinge mounting seat, and the arched arm is fixed with the trunk cover;

the movable arm is rotatably connected with one end part of the arched arm;

the torsion bar is respectively and movably connected with the hinge mounting seat and the movable arm, and pushes the torsion bar to drive the movable arm to rotate around the arched arm so as to drive the arched arm to rotate around the hinge mounting seat and open the trunk cover;

a gear spring damper located inside the arcuate arm, wherein the gear spring damper includes a gear cushioning assembly and a spring cushioning assembly in transmission with the gear cushioning assembly;

the first pin shaft is rotationally connected to the arched arm and is in transmission fit with the gear buffer assembly, wherein the first pin shaft is fixedly connected with one end part of the movable arm, so that when the movable arm rotates around the arched arm, the first pin shaft drives the gear buffer assembly to rotate, and the rotating 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 cover is reduced.

Optionally, the gear buffer assembly includes:

the first gear is coaxially arranged with the first pin shaft;

and the second gear is meshed with the first gear, the transmission ratio of the first gear to the second gear is larger than 1, and the second gear is in transmission connection with the spring buffer assembly.

Optionally, the gear buffer assembly includes:

the first gear is coaxially arranged with the first pin shaft;

the transition gear is meshed with the first gear and is rotationally connected with the gear buffer assembly or the arched arm, and the transmission ratio of the first gear to the transition gear is larger than 1;

and the second gear is meshed with the transition gear and is in transmission connection with the spring buffer assembly.

Optionally, the spring buffer assembly includes:

the shell is fixed in the arched arm and is provided with an accommodating cavity;

the fixed gaskets are positioned in the accommodating cavity and are fixed with the shell;

the movable gaskets are positioned between at least two fixed gaskets, are overlapped with the fixed gaskets, and are respectively provided with a transmission channel;

the transmission shaft is rotationally connected to the shell, and is coaxially arranged with the second gear so as to drive the transmission shaft to rotate through the second gear, and the movable gasket is fixedly connected with the transmission shaft;

the limiting spring is sleeved on the transmission shaft and is positioned between the second gear and the fixed gasket, so that the fixed gasket and the movable gasket form press contact through the limiting spring, and the movable gasket rubs and absorbs energy with the fixed gasket when rotating so as to reduce the rotating speed of the first pin shaft.

Optionally, when the movable gasket and the fixed gasket are respectively a plurality of, a plurality of movable gaskets and a plurality of fixed gaskets are staggered.

Optionally, the fixed gasket is kept away from the edge of transmission passageway, has radially extended fixed ear, the holding intracavity is followed the axial of transmission shaft has seted up the fixed slot, fixed ear with fixed slot shape cooperation is right fixed gasket forms spacingly in radial.

Optionally, the movable gasket is close to the edge of the transmission channel, a plurality of transmission grooves are formed in the radial direction, a plurality of transmission teeth are arranged on the outer surface of the transmission shaft, and the transmission teeth extend along the axial direction of the transmission shaft, wherein the transmission teeth and the transmission grooves are matched in shape and form a limit on the movable gasket in the radial direction; or alternatively, the process may be performed,

the movable gasket is close to the edge of the transmission channel, a plurality of transmission teeth extend along the radial direction, a plurality of transmission grooves are formed in the outer surface of the transmission shaft, the transmission grooves extend along the axial direction of the transmission shaft, and the transmission teeth and the transmission grooves are matched in shape and form limit on the movable gasket along the radial direction.

Optionally, the movable arm is close to the tip of first round pin axle is provided with first clamping part and the second clamping part of mutual separation, wherein, first clamping part with the one end fixed connection of first round pin axle, the second clamping part with the other end fixed connection of first round pin axle.

According to a second aspect of the present invention there is provided a trunk lid assembly comprising a trunk lid and a trunk lid support device as claimed in any one of the preceding claims, wherein the trunk lid is mounted on the trunk lid support device.

According to a third aspect of the present invention there is provided a vehicle comprising a trunk lid assembly as described above.

Compared with the prior art, the invention comprises a hinge mounting seat, an arched arm, a movable arm, a torsion bar, a gear spring damper and a first pin shaft. The hinge mounting seat is fixed on the vehicle body, one end part of the arched arm is rotationally connected with the hinge mounting seat, the arched arm is fixed with the trunk cover, and one end part of the movable arm is rotationally connected with the arched arm. The torsion bar is respectively and movably connected with the hinge mounting seat and the movable arm, and pushes the torsion bar to drive the movable arm to rotate around the arched arm so as to drive the arched arm to rotate around the hinge mounting seat and open the trunk cover. The gear spring damper is located inside the arcuate arm, wherein the gear spring damper includes a gear cushioning assembly and a spring cushioning assembly in transmission with the gear cushioning assembly. The first pin shaft is rotatably connected to the arched arm and is in transmission fit with the gear buffer assembly, wherein the first pin shaft is fixedly connected with one end part of the movable arm, so that when the movable arm rotates around the arched arm, the first pin shaft drives the gear buffer assembly to rotate, and the rotating 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 cover is reduced. Therefore, the trunk lid can be slowly opened through the gear spring damper embedded in the arched arm, the assembling space in the vehicle can be not occupied on the basis of guaranteeing the opening stability of the trunk lid, and the gear spring damper can be rapidly assembled.

The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.

Drawings

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 drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures.

In the drawings:

fig. 1 is a schematic perspective view of a back cover supporting device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of a trunk lid support device according to an embodiment of the present invention;

FIG. 3 is a schematic illustration of the mounting position of a gear spring damper within an arcuate arm provided in an embodiment of the present invention;

fig. 4 is an enlarged view of the structure at a in fig. 3;

fig. 5 is a schematic perspective view of a gear spring damper according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a gear spring damper according to an embodiment of the present invention;

FIG. 7 is a schematic view of a trunk lid support device according to an embodiment of the present invention when the trunk lid is closed;

FIG. 8 is a schematic view of a trunk lid support device according to an embodiment of the present invention after the trunk lid is opened;

reference numerals: 1. a hinge mount; 2. an arcuate arm; 3. a movable arm; 31. a first clip portion; 32. a second clamping part; 4. a torsion bar; 5. a gear spring damper; 51. a gear buffer assembly; 511. a first gear; 512. a second gear; 513. a transition gear; 52. a spring buffer assembly; 521. a housing; 5211. a receiving chamber; 5212. a fixing groove; 522. fixing the gasket; 5221. a fixed ear; 523. a removable spacer; 524. a transmission shaft; 5241. a drive tooth; 525. a limit spring; 6. a first pin; 7. a trunk lid.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to 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 invention to those skilled in the art.

Referring to fig. 1-8, an embodiment of the present invention provides a trunk lid support device that may include a hinge mount 1, an arcuate arm 2, a movable arm 3, a torsion bar 4, a gear spring damper 5, and a first pin 6, wherein:

the hinge mounting seat 1 is fixed on a vehicle body, one end part of the arched arm 2 is rotatably connected with the hinge mounting seat 1, the arched arm 2 is fixed with the trunk cover 7, and one end part of the movable arm 3 is rotatably connected with the arched arm 2. The torsion bar 4 is respectively and movably connected with the hinge mounting seat 1 and the movable arm 3. In an example, the hinge mounting base 1 is provided with a first mounting hole through which the torsion bar 4 passes, and the torsion bar 4 passes through the first mounting hole and can rotate in the first mounting hole. The other end part of the movable arm 3 is provided with a second mounting hole for the torsion bar 4 to penetrate through, and the torsion bar 4 penetrates through the second mounting hole and can rotate in the second mounting hole. Thus, as shown with reference to fig. 7, in the closed state of the trunk lid 7, the angle between the movable arm 3 and the arcuate arm 2 may be α1°, and the torsion bar 4 is in a deformed state. After the trunk lid 7 is opened by a user, the arcuate arm 2 fixed with the trunk lid 7 drives the movable arm 3 to rotate, so that the torsion bar 4 is pushed to rebound, and under the action of self deformation resilience force, the movable arm 3 is continuously driven to rotate around the arcuate arm 2, so that the arcuate arm 2 is driven to rotate around the hinge mounting seat 1 until the trunk lid 7 is completely opened. Referring to fig. 8, the angle between the movable arm 3 and the arcuate arm 2 may be α2 ° in the case where the trunk lid 7 is fully opened.

As shown with reference to fig. 3 and 4, the gear spring damper 5 is located inside the arcuate arm 2, which can avoid occupying the installation space in the vehicle. That is, the gear spring damper 5 may be fully embedded within the arcuate arm 2. The problem of positioning on the outer surface of the arcuate arm 2 need not be considered during assembly. The gear spring damper 5 may include a gear damper assembly 51 and a spring damper assembly 52 in communication with the gear damper assembly 51. The first pin shaft 6 is rotatably connected to the arcuate arm 2 and is in transmission fit with the gear buffer assembly 51, wherein the first pin shaft 6 is fixedly connected with one end portion of the movable arm 3, so that when the movable arm 3 rotates around the arcuate 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 that the opening speed of the trunk lid 7 is reduced. In the case of a decrease in the rotational speed of the first pin 6, the angle between the movable arm 3 and the arcuate arm 2 changes by a small amount per unit time. Therefore, the gear spring damper 5 embedded in the arched arm 2 can be used for slowly opening the trunk cover 7, so that the assembling space in a vehicle can be not occupied on the basis of ensuring the opening stability of the trunk cover 7, and the gear spring damper 5 can be quickly assembled.

In an alternative embodiment of the invention, the gear buffer assembly 51 may include a first gear 511 and a second gear 512, where the first gear 511 is disposed coaxially with the first pin 6. The coaxial arrangement is understood to mean that the central axis of the first gear 511 coincides with the central axis of the first pin 6. The second gear 512 is meshed with the first gear 511, and the transmission ratio of the first gear 511 to the second gear 512 is greater than 1, wherein the second gear 512 is in transmission connection with the spring buffer assembly 52. Thereby, the first pin shaft 6 can be subjected to speed reduction and torque increase through the gear buffer assembly 51. So that the deformation resilience force generated by the torsion bar 4 can be buffered. Wherein the second gear 512 transmits rotational motion into the jounce bumper assembly 52 and further cushions by the jounce bumper assembly 52.

In an alternative embodiment of the invention, referring to fig. 5 and 6, the gear buffer assembly 51 may include a first gear 511, a transition gear 513, and a second gear 512. Wherein, the first gear 511 is coaxially arranged with the first pin 6. The transition gear 513 is meshed with the first gear 511 and is rotatably connected to the gear buffer assembly 51 or is rotatably connected to the arcuate arm 2 through a bearing or the like. Wherein the transmission ratio of the first gear 511 and the transition gear 513 is greater than 1. Accordingly, the first pin 6 can be reduced in speed and increased in torque by the first gear 511 and the transition gear 513, and the deformation resilience force generated by the torsion bar 4 can be buffered. The second gear 512 is meshed with the transition gear 513, and the second gear 512 is in driving connection with the spring buffer assembly 52. Wherein the second gear 512 transmits rotational motion into the jounce bumper assembly 52 and further cushions by the jounce bumper assembly 52. Further, the transition gear 513 is added between the first gear 511 and the second gear 512, so that the problem that the space between the second gear 512 and the first gear 511 is insufficient to install the spring buffer assembly 52 in the case that the transmission ratio is greater than or equal to the preset transmission threshold value can be avoided.

The preset transmission threshold may be determined by a person skilled in the art according to actual application requirements, for example, the preset transmission threshold may be 2, 3, 4, and 5, which are not limited herein.

In an alternative embodiment of the invention, referring to fig. 6, the spring buffer assembly 52 may include a housing 521, at least two fixed shims 522, a movable shim 523, a transmission shaft 524, and a limiting spring 525. The housing 521 is fixed inside the arcuate arm 2, and the housing 521 is provided with a receiving cavity 5211. In one example, the housing 521 may include a housing base and a housing end cap, and the receiving cavity 5211 may be formed in the housing base, so that the assembly of the jounce bumper assembly 52, or the jounce bumper assembly 52 and the gear bumper assembly 51 may be facilitated. At least two of the fixing spacers 522 are located in the accommodating chamber 5211 and fixed to the housing 521. The movable gasket 523 is located between the at least two fixed gaskets 522 and forms an overlapping with the fixed gaskets 522, and the fixed gaskets 522 and the movable gasket 523 are respectively provided with a transmission channel. For example, the cross-sectional shapes of the fixed pad 522 and the movable pad 523 may be circular. The transmission shaft 524 is rotatably connected to the housing 521, and the transmission shaft 524 is coaxially disposed with the second gear 512, so as to drive the transmission shaft 524 to rotate through the second gear 512. The movable washer 523 is fixedly connected to the drive shaft 524. The limiting spring 525 is sleeved on the transmission shaft 524 and is located between the second gear 512 and the fixed pad 522, so that the fixed pad 522 and the movable pad 523 form press contact through the limiting spring 525. Referring to fig. 5 and 6, a spring end cover for defining the position of the limiting spring 525 may be further disposed at the end of the limiting spring 525 near the second gear 512, so that the limiting spring 525 may be compressed by the spring end cover, and the end of the limiting spring 525 far from the second gear 512 may press-contact the fixed pad 522 and the movable pad 523. Thus, when the second gear 512 drives the transmission shaft 524 to rotate, the movable washer 523 fixed to the transmission shaft 524 rotates synchronously. Thereby, the movable washer 523 rubs with the fixed washer 522 to absorb energy when rotating, so as to reduce the rotation speed of the first pin 6. The gear buffer assembly 51 is used for reducing speed and increasing torque, and the spring buffer assembly 52 is combined for buffering the deformation resilience force generated by the torsion bar 4. Therefore, the trunk lid 7 can be slowly opened, and on the basis of ensuring the opening stability of the trunk lid 7, the assembling space in the automobile is not occupied, the gear spring damper 5 can be rapidly assembled, and the gear spring damper can be suitable for the assembling beat during the whole automobile assembling.

In an alternative embodiment of the invention, referring to fig. 5 and 6, when the number of the movable gaskets 523 and the fixed gaskets 522 is plural, the movable gaskets 523 and the fixed gaskets 522 are staggered. The staggered arrangement is understood to be that, in addition to the two fixed shims 522 at both ends, the movable shim 523, the fixed shim 522, and the like may be stacked one on top of the other in this order. Thereby effectively increasing the friction area between the movable pad 523 and the fixed pad 522 when rotating. The cushioning effect of the spring cushioning assembly 52 may be enhanced.

In an alternative embodiment of the invention, referring to fig. 5 and 6, the fixing spacer 522 is far from the edge of the transmission channel, a fixing lug 5221 extends along the radial direction, a fixing groove 5212 is formed in the accommodating cavity 5211 along the axial direction of the transmission shaft 524, and the fixing lug 5221 is matched with the fixing groove 5212 in shape to form a limit on the fixing spacer 522 in the radial direction. That is, the fixing spacer 522 is limited by the pressing of the limiting spring 525 in the axial direction, and the fixing lugs 5221 and the fixing grooves 5212 are provided to facilitate the assembly of the fixing spacer 522. The number of the fixing lugs 5221 and the fixing grooves 5212 are adapted, and when the number of the fixing lugs 5221 is greater than 1. At least 2 of the attachment lugs 5221 are equiangularly disposed about the center of the attachment pad 522.

In an alternative embodiment of the invention, the movable washer 523 is close to the edge of the transmission channel, a plurality of transmission grooves are formed in the radial direction, a plurality of transmission teeth 5241 are disposed on the outer surface of the transmission shaft 524, and the transmission teeth 5241 are disposed along the axial direction of the transmission shaft 524 in an extending manner, wherein the transmission teeth 5241 and the transmission grooves are matched in shape, and limit is formed on the movable washer 523 in the radial direction. Alternatively, referring to fig. 6, the movable washer 523 is close to the edge of the transmission channel, a plurality of transmission teeth 5241 extend along the radial direction, a plurality of transmission grooves are formed on the outer surface of the transmission shaft 524, and the transmission grooves extend along the axial direction of the transmission shaft 524, wherein the transmission teeth 5241 and the transmission grooves are matched in shape, and limit is formed on the movable washer 523 along the radial direction. On the one hand, the cooperation of the driving teeth 5241 with the driving grooves can facilitate the assembly of the movable washer 523 with the driving shaft 524. On the other hand, when the transmission shaft 524 rotates, the movable washer 523 is driven to move, so that synchronous rotation is realized.

In an alternative embodiment of the invention, referring to fig. 3, a first clamping portion 31 and a second clamping portion 32 are spaced apart from each other at an end portion of the movable arm 3 near the first pin shaft 6, where the first clamping portion 31 is fixedly connected to one end portion of the first pin shaft 6, and the second clamping portion 32 is fixedly connected to the other end portion of the first pin shaft 6. In other words, the movable arm 3 is fixed to both ends of the first pin shaft 6 by forming the open first and second clip parts 31 and 32, respectively, so that the rotation stability of the movable arm 3 and the connection stability with the first pin shaft 6 can be improved.

The embodiment of the invention also provides a trunk lid assembly, which comprises a trunk lid 7 and the trunk lid supporting device according to any one of the embodiment of the invention, wherein the trunk lid 7 is arranged on the trunk lid supporting device.

The embodiment of the invention also provides a vehicle, which comprises the trunk cover assembly.

In summary, the embodiment of the invention discloses a trunk lid supporting device, a trunk lid assembly and a vehicle, wherein the supporting device comprises a hinge mounting seat 1, an arched 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 part of the arched arm 2 is rotatably connected with the hinge mounting seat 1, the arched arm 2 is fixed with the trunk cover 7, and one end part of the movable arm 3 is rotatably connected with the arched arm 2. The torsion bar 4 is movably connected with the hinge mounting seat 1 and the movable arm 3 respectively, and pushes the torsion bar 4 to drive the movable arm 3 to rotate around the arched arm 2 so as to drive the arched arm 2 to rotate around the hinge mounting seat 1 and open the trunk cover 7. The gear spring damper 5 is located inside the arcuate arm 2, wherein the gear spring damper 5 comprises a gear damper assembly 51 and a spring damper assembly 52 in transmission with the gear damper assembly 51. The first pin shaft 6 is rotatably connected to the arcuate arm 2 and is in transmission fit with the gear buffer assembly 51, wherein the first pin shaft 6 is fixedly connected to one end portion of the movable arm 3, 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 by the gear buffer assembly 51 and the spring buffer assembly 52, so that the opening speed of the trunk lid 7 is reduced. Therefore, the gear spring damper 5 embedded in the arched arm 2 can be used for slowly opening the trunk cover 7, so that the assembling space in a vehicle can be not occupied on the basis of ensuring the opening stability of the trunk cover 7, and the gear spring damper 5 can be quickly assembled.

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

As will be readily appreciated by those skilled in the art: any combination of the above embodiments is possible, and thus is an embodiment of the present invention, but the present specification is not limited by the text.

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

Similarly, it should be appreciated that in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.

Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

Claims (10)

1. A trunk lid support device, the device comprising:

the automobile comprises a hinge mounting seat (1), wherein the hinge mounting seat (1) is fixed on an automobile body;

the hinge mounting seat (1) is rotatably connected with one end part of the arched arm (2), and the arched arm (2) is fixed with the trunk cover (7);

a movable arm (3), wherein one end part of the movable arm (3) is rotationally connected with the arched arm (2);

the torsion bar (4) is respectively and movably connected with the hinge mounting seat (1) and the movable arm (3), and pushes the torsion bar (4) to drive the movable arm (3) to rotate around the arched arm (2) so as to drive the arched arm (2) to rotate around the hinge mounting seat (1) and open the trunk cover (7);

a gear spring damper (5), the gear spring damper (5) being located inside the arcuate arm (2), wherein the gear spring damper (5) comprises a gear cushioning assembly (51) and a spring cushioning assembly (52) in transmission with the gear cushioning assembly (51);

the first pin shaft (6), the first pin shaft (6) rotate connect in on the bow-shaped arm (2), and with gear buffer assembly (51) transmission cooperation, wherein, first pin shaft (6) with one end fixed connection of movable arm (3), in order when movable arm (3) is around bow-shaped arm (2) is rotatory, first pin shaft (6) drive gear buffer assembly (51) is rotatory, and pass through gear buffer assembly (51) and spring buffer assembly (52) are injectd the rotational speed of first pin shaft (6), in order to reduce trunk lid (7) opening speed.

2. The trunk lid support device according to claim 1, wherein the gear damper assembly (51) includes:

a first gear (511), wherein the first gear (511) is coaxially arranged with the first pin shaft (6);

and the second gear (512), the second gear (512) is meshed with the first gear (511), and the transmission ratio of the first gear (511) to the second gear (512) is larger than 1, wherein the second gear (512) is in transmission connection with the spring buffer assembly (52).

3. The trunk lid support device according to claim 1, wherein the gear damper assembly (51) includes:

a first gear (511), wherein the first gear (511) is coaxially arranged with the first pin shaft (6);

a transition gear (513), the transition gear (513) being in mesh with the first gear (511) and in rotational connection with 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;

and the second gear (512), the second gear (512) is meshed with the transition gear (513), and the second gear (512) is in transmission connection with the spring buffer assembly (52).

4. A trunk lid support device according to claim 2 or 3, wherein the spring-damper assembly (52) comprises:

a housing (521), wherein the housing (521) is fixed inside the arcuate arm (2), and the housing (521) is provided with a containing cavity (5211);

-at least two fixing shims (522), said fixing shims (522) being located within said housing cavity (5211) and being fixed with said casing (521);

the movable gaskets (523) are positioned between the at least two fixed gaskets (522) and are overlapped with the fixed gaskets (522), and transmission channels are respectively formed in the fixed gaskets (522) and the movable gaskets (523);

the transmission shaft (524) is rotationally connected to the shell (521), the transmission shaft (524) and the second gear (512) are coaxially arranged so as 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);

spacing spring (525), spacing spring (525) cover is located on transmission shaft (524), and be located between second gear (512) and fixed gasket (522), so that through spacing spring (525) fixed gasket (522) and movable gasket (523) form the pressure and touch, movable gasket (523) rotatory time with fixed gasket (522) friction energy-absorbing, in order to reduce the rotational speed of first round pin axle (6).

5. The trunk lid supporting device according to claim 4, wherein when the movable shims (523) and the fixed shims (522) are plural, the plural movable shims (523) are staggered with the plural fixed shims (522), respectively.

6. The trunk lid supporting device of claim 4, wherein the fixing spacer (522) is far away from the edge of the transmission channel, a fixing lug (5221) extends radially, a fixing groove (5212) is formed in the accommodating cavity (5211) along the axial direction of the transmission shaft (524), and the fixing lug (5221) is matched with the fixing groove (5212) in a shape, so that limit is formed on the fixing spacer (522) in the radial direction.

7. The trunk lid supporting device of claim 5, wherein the movable washer (523) is close to the edge of the transmission channel, a plurality of transmission grooves are radially formed, a plurality of transmission teeth (5241) are arranged on the outer surface of the transmission shaft (524), the transmission teeth (5241) are arranged along the axial extension of the transmission shaft (524), and the transmission teeth (5241) and the transmission grooves are in shape fit to form a limit on the movable washer (523) in the radial direction; or alternatively, the process may be performed,

the movable gasket (523) is close to the edge of the transmission channel, a plurality of transmission teeth (5241) extend along the radial direction, a plurality of transmission grooves are formed in the outer surface of the transmission shaft (524), the transmission grooves extend along the axial direction of the transmission shaft (524), and the transmission teeth (5241) are matched with the transmission grooves in shape to limit the movable gasket (523) in the radial direction.

8. The trunk lid supporting device according to claim 1, characterized in that the movable arm (3) is provided with a first clip portion (31) and a second clip portion (32) spaced apart from each other near an end portion of the first pin (6), wherein the first clip portion (31) is fixedly connected with an end portion of the first pin (6), and the second clip portion (32) is fixedly connected with the other end portion of the first pin (6).

9. A trunk lid assembly, characterized in that the trunk lid assembly comprises a trunk lid (7) and a trunk lid support device as claimed in any one of claims 1-8, wherein the trunk lid (7) is mounted on the trunk lid support device.

10. A vehicle comprising a trunk lid assembly as claimed in any one of claims 9.