Tail door hinge structure and vehicle equipped with same

Abstract

Disclosed are a tail door hinge structure and a vehicle equipped with the same. The tail door hinge structure comprises a hinge support; a main hinge arm including a first side hinged to the hinge bracket and including second to fourth sides; a sub-hinge arm including a first side hinged to the second side of the main hinge arm and including the other side; the opening control rod assembly is hinged to the third side of the main hinge; the closing control rod assembly is hinged to the fourth side of the main hinge. According to the invention, the preset height of the tail gate lifting to the balance position can be reduced, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and in particular to a tailgate hinge structure and a vehicle equipped with the tailgate hinge structure. Background Art

[0002] For most tailgates for non-electric vehicles, a gas lifter is used as auxiliary power in conjunction with manpower to open the tailgate of the vehicle. In the process of opening the tailgate of the vehicle, the user needs to use his own force to first lift the tailgate to a predetermined height so that the tailgate is raised to a balanced position (a position where the torque provided by the weight of the tailgate, the torque provided by the friction force, and the torque provided by the thrust of the gas lifter are balanced). From the balanced position, no human assistance is required, and the tailgate can be fully opened only by relying on the torque provided by the thrust of the gas lifter.

[0003] The existing tailgate hinge structure for vehicles generally adopts a single rotating axis hinge, which results in a reduced force arm of the gas lifter, making the predetermined height for lifting the tailgate to the equilibrium position during the opening process relatively high, which increases the amount of manpower required by the user to open the tailgate. In addition, during the design process of the vehicle, the designer has to select a gas lifter with a higher pressure value to meet the demand, which increases the size and weight of the gas lifter and increases the cost.

[0004] Therefore, there is a need for further improvement of the existing tailgate hinge structure.

[0005] The information disclosed in this background section is only intended to enhance understanding of the overall background of the invention and should not be taken as an acknowledgement or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] In order to solve the problems existing in the prior art, the present invention provides a tailgate hinge structure and a vehicle equipped with the tailgate hinge structure, wherein the tailgate hinge structure can effectively increase the force arm of the gas lifter to reduce the predetermined height required for the tailgate to rise to a balanced position and reduce the force required by the user when opening the tailgate. In addition, the designer can select a gas lifter with a lower pressure value to reduce the size and weight of the gas lifter, thereby reducing the cost.

[0007] A tailgate hinge structure according to a first aspect of the present invention comprises: a hinge bracket; a main hinge arm, which includes a first side hinged to the hinge bracket and includes second to fourth sides; a secondary hinge arm, which includes one side hinged to the second side of the main hinge arm and includes another side; an opening control lever assembly, which is hinged to the third side of the main hinge arm; and a closing control lever assembly, which is hinged to the fourth side of the main hinge arm; wherein, in a first stage of the opening process, the secondary hinge arm can rotate from a first secondary hinge position around the second side of the main hinge arm along a first direction to a second secondary hinge position, and the main hinge arm cannot rotate around the hinge bracket due to the restriction of the opening control lever assembly. Rotation; in the second stage of the opening process, the restriction of the opening control lever assembly is released, so that the secondary hinge arm can drive the main hinge arm to rotate from the first main hinge position around the hinge bracket along the first direction to the second main hinge position; in the first stage of the closing process, the secondary hinge arm can rotate from the second secondary hinge position around the second side of the main hinge arm along the second direction to the first secondary hinge position, and due to the restriction of the closing control lever assembly, the main hinge arm cannot rotate around the hinge bracket; in the second stage of the closing process, the restriction of the closing control lever assembly is released, so that the secondary hinge arm can drive the main hinge arm to rotate from the second main hinge position around the hinge bracket along the second direction to the first main hinge position.

[0008] Preferably, a first side of the main hinge arm is hinged to the hinge bracket via a main shaft, and one side of the secondary hinge arm is hinged to a second side of the main hinge arm via a secondary shaft.

[0009] Preferably, the hinge bracket includes a side wall corresponding to the opening control rod assembly, and the outer surface of the side wall is provided with an opening limiting portion; the main hinge arm includes a main hinge arm body and a first mounting plate, and the first mounting plate extends from the main hinge arm body in a direction perpendicular to the main hinge arm body; the opening control rod assembly includes: an opening control rod, a middle portion of which is hinged to the first mounting plate by a first pin; and a first torsion spring, one end of which is mounted to the first mounting plate, and the other end of which is mounted to the opening control rod to provide a first torsional force to the opening control rod; one end of the opening control rod is stopped on the opening limiting portion by the first torsional force, thereby preventing the main hinge arm from rotating around the main axis along the first direction.

[0010] Preferably, the secondary hinge arm includes a hinged portion hinged to the main hinge arm, and an opening trigger portion is arranged on the outer peripheral surface of the hinged portion; the secondary hinge arm can rotate around the secondary axis along a first direction so that the opening trigger portion can contact the opening control rod and push the opening control rod to rotate around the first pin along a second direction, thereby causing one end of the opening control rod to disengage from the opening limiting portion.

[0011] Preferably, the main hinge arm body of the main hinge arm is provided with an opening limit limiting portion; the secondary hinge arm can rotate around the secondary axis along a first direction so that the hinge portion contacts the opening limit limiting portion, thereby limiting further rotation of the secondary hinge arm.

[0012] Preferably, the hinge bracket includes a side wall corresponding to the closing control rod assembly, and the outer surface of the side wall is provided with a closing limiting portion; the main hinge arm further includes a second mounting plate, and the second mounting plate extends from the main hinge arm body in a direction perpendicular to the main hinge arm body; the closing control rod assembly includes: a closing control rod, a middle portion of which is hinged to the second mounting plate by a second pin; and a second torsion spring, one end of which is mounted to the second mounting plate, and the other end of which is mounted to the closing control rod to provide a second torsional force to the closing control rod; one end of the closing control rod is stopped on the closing limiting portion by the second torsional force, thereby preventing the main hinge arm from rotating around the main axis along the second direction.

[0013] Preferably, the outer peripheral surface of the hinge part of the secondary hinge arm is provided with a closing trigger part; the secondary hinge arm can rotate around the secondary axis along the second direction, so that the closing trigger part can contact the closing control rod and push the closing control rod to rotate around the second pin along the first direction, so that one end of the closing control rod is disengaged from the closing limiting part.

[0014] Preferably, the outer peripheral surface of the hinge part of the secondary hinge arm is further configured with a closing limit limiting part; the secondary hinge arm can rotate around the secondary axis along the second direction so that the closing limit limiting part of the hinge part of the secondary hinge arm contacts the main hinge arm body of the main hinge arm, thereby limiting the secondary hinge arm from continuing to rotate.

[0015] Preferably, the hinge bracket is connected to the vehicle body, and the other side of the secondary hinge arm is connected to the tailgate.

[0016] According to a second aspect of the present invention, the present invention provides a vehicle equipped with the tailgate hinge structure as described in the first aspect.

[0017] The tailgate hinge structure of the present invention utilizes the rotation of the main hinge arm around the hinge bracket and the rotation of the secondary hinge arm around the main hinge arm to effectively increase the force arm of the gas lifter, thereby reducing the predetermined height required for the tailgate to be raised to the equilibrium position and reducing the force required by the user when opening the tailgate. In addition, the designer can select a gas lifter with a lower pressure value to reduce the size and weight of the gas lifter, thereby reducing the cost.

[0018] The methods and apparatus of the present invention have other features and advantages that will be apparent from, or will be described in detail in, the accompanying drawings and subsequent embodiments incorporated herein, which together serve to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A first schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A three-dimensional exploded view of the tailgate hinge structure;

[0021] Figure 3 A second schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention;

[0022] Figure 4 A schematic diagram showing the structure of a hinge bracket;

[0023] Figure 5 A schematic diagram showing the structure of the secondary hinge arm;

[0024] Figure 6 for Figure 3 Enlarged view of point C in the middle;

[0025] Figure 7 for Figure 6 A three-dimensional exploded view of the components;

[0026] Figure 8 A third schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention;

[0027] Fig. 9 for Figure 8 The enlarged view of point D in the middle;

[0028] Fig.10 for Fig. 9 A three-dimensional exploded view of the components;

[0029] Fig.11 A fourth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention;

[0030] Fig.12 A fifth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention;

[0031] Fig.13 A sixth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention;

[0032] Fig.14 for Fig.13 The enlarged view of point E;

[0033] Fig.15 for Fig.13 The enlarged view of F;

[0034] Fig.16 A seventh schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention;

[0035] Fig.17 is an eighth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention;

[0036] Fig.18 A ninth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention;

[0037] Fig.19 is a tenth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention;

[0038] Fig. 20 for Fig.19 The enlarged view of G;

[0039] Fig.21 is an eleventh schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention;

[0040] Fig. 22 It is a force analysis diagram of a tailgate hinge structure with a single rotating axis hinge in the prior art during the opening process;

[0041] Fig.23 A schematic diagram showing a tailgate hinge structure with a single rotating axis hinge in the prior art rising to a balanced position during the opening process;

[0042] Fig.24 A force analysis diagram of the tailgate hinge structure at the beginning of the first stage of the opening process according to the embodiment of the present invention;

[0043] Fig.25 It is a schematic diagram showing that the tailgate hinge structure according to the embodiment of the present invention rises to a balanced position during the opening process.

[0044] Description of reference numerals:

[0045] 100: Hinge bracket 101: Side wall

[0046] 102: opening restriction portion 103: side wall

[0047] 104: Closing restriction part 200: Main hinge arm

[0048] 201: Main axis 202: Secondary axis

[0049] 203: Main hinge arm body 204: First mounting plate

[0050] 205: Open limit limiter 206: Second mounting plate

[0051] 300: Secondary hinge arm 301: Secondary hinge arm body

[0052] 302: hinge part 303: hinge body

[0053] 304: Extension plate 305: Open trigger part

[0054] 306: Close trigger unit 307: Close limit limit unit

[0055] 400: Open control lever assembly 401: Open control lever

[0056] 402: first torsion spring 403: first pin

[0057] 500: Closing lever assembly 501: Closing lever

[0058] 502: second torsion spring 503: second pin.

[0059] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather present simplified representations of various features to illustrate the basic principles of the present invention. The specific design features disclosed in the present invention (including, for example, specific dimensions, directions, locations, and shapes) will be determined in part by the specific intended application and use environment.

[0060] In the figures, like reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing. DETAILED DESCRIPTION

[0061] The following will be referred to in detail various embodiments of the present invention, examples of which are presented in the accompanying drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to these exemplary embodiments. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternative forms, modifications, equivalent forms and other embodiments that can be included in the spirit of the present invention and within the scope defined by the appended claims.

[0062] In the embodiment of the present invention, the first secondary hinge position refers to the relative position when the angle between the secondary hinge arm 300 and the main hinge arm 200 is a first preset angle, and the second secondary hinge position refers to the relative position when the angle between the secondary hinge arm 300 and the main hinge arm 200 is a second preset angle. The angle between the secondary hinge arm 300 and the main hinge arm 200 is between the first preset angle and the second preset angle.

[0063] The first main hinge position refers to the relative position when the angle between the main hinge arm 200 and the hinge bracket 100 is the third preset angle, and the second main hinge position refers to the relative position when the angle between the main hinge arm 200 and the hinge bracket 100 is the fourth preset angle. The angle between the main hinge arm 200 and the hinge bracket 100 is between the third preset angle and the fourth preset angle.

[0064] Reference below Figures 1 to 25 A tailgate hinge structure according to an embodiment of the present invention will be described.

[0065] like Figures 1 to 3 As shown, the tailgate hinge structure according to the embodiment of the present invention includes: a hinge bracket 100 , a main hinge arm 200 , a secondary hinge arm 300 , an opening control lever assembly 400 and a closing control lever assembly 500 .

[0066] The hinge bracket 100 is fixed to the vehicle body. A first side of the main hinge arm 200 is hinged to the hinge bracket 100. One side of the secondary hinge arm 300 is hinged to a second side of the main hinge arm 200, the second side of the main hinge arm 200 is opposite to the first side, and the other side of the secondary hinge arm 300 is connected to the tailgate. The opening lever assembly 400 is hinged to a third side of the main hinge arm 200. The closing lever assembly 500 is hinged to a fourth side of the main hinge arm 200, the fourth side of the main hinge arm 200 is opposite to the third side.

[0067] In the first stage of the opening process, the secondary hinge arm 300 can be moved from the first secondary hinge position around the second side of the main hinge arm 200 along the first direction (ie, Figure 3 The main hinge arm 200 is rotated to the second secondary hinge position (in the direction of arrow A in FIG. 1 ), and under the restriction of the opening control lever assembly 400, the main hinge arm 200 cannot rotate around the hinge bracket 100.

[0068] In the second stage of the opening process, the restriction of the opening lever assembly 400 is released, so that the secondary hinge arm 300 can drive the main hinge arm 200 to rotate from the first main hinge position to the second main hinge position around the hinge bracket 100 along the first direction.

[0069] In the first stage of the closing process, the secondary hinge arm 300 can be moved from the second secondary hinge position around the second side of the primary hinge arm 200 along the second direction (ie, Figure 3 The main hinge arm 200 is rotated to the first secondary hinge position (in the direction of arrow B in FIG. 1 ), and under the restriction of the closing control lever assembly 500, the main hinge arm 200 cannot rotate around the hinge bracket 100.

[0070] In the second stage of the closing process, the restriction of the closing lever assembly 500 is released, so that the secondary hinge arm 300 can drive the main hinge arm 200 to rotate from the second main hinge position around the hinge bracket 100 along the second direction to the first main hinge position.

[0071] The tailgate hinge structure of the embodiment of the present invention utilizes the rotation of the main hinge arm 200 around the hinge bracket 100 and the rotation of the secondary hinge arm 300 around the main hinge arm 200, which can effectively increase the force arm of the gas lifter to reduce the predetermined height required for the tailgate to rise to the equilibrium position and reduce the force required by the user when opening the tailgate. In addition, the designer can choose a gas lifter with a lower pressure value to reduce the size and weight of the gas lifter, thereby reducing the cost.

[0072] In an exemplary embodiment, Figure 1 and Figure 2 As shown, a first side of the main hinge arm 200 is hinged to the hinge bracket 100 through a main axis 201, and the main hinge arm 200 can rotate around the main axis 201. One side of the secondary hinge arm 300 is hinged to a second side of the main hinge arm 200 through a secondary axis 202, and the secondary hinge arm 300 can rotate around the secondary axis 202.

[0073] In an exemplary embodiment, Figure 3 and Figure 4 As shown, the hinge bracket 100 includes a side wall 101 corresponding to the opening control lever assembly 400 , and an opening restricting portion (Open Restricting Structure) 102 is configured on the outer surface of the side wall 101 . The opening restricting portion 102 can be located at a position higher than the main shaft 201 .

[0074] refer to Figure 2 As shown, the main hinge arm 200 includes a main hinge arm body 203 and a first mounting plate 204 . The main hinge arm body 203 is substantially plate-shaped, and the first mounting plate 204 extends from the main hinge arm body 203 in a direction perpendicular to the main hinge arm body 203 .

[0075] Further references Figure 2 As shown, the opening control rod assembly 400 includes an opening control rod 401 and a first torsion spring 402 .

[0076] The opening control rod 401 is L-shaped, and the middle portion of the opening control rod 401 is hinged to the first mounting plate 204 of the main hinge arm 200 through a first pin 403 .

[0077] like Figure 3 , Figure 6 and Figure 7As shown, one end of the first torsion spring 402 is mounted to the first mounting plate 204, and the other end of the first torsion spring 402 is mounted to the opening control rod 401 to provide a first torsional force to the opening control rod 401. The first torsional force causes one end of the opening control rod 401 to stop on the opening limiting portion 102, thereby preventing the main hinge arm 200 from rotating around the main axis 201 along the first direction.

[0078] In an exemplary embodiment, Figure 2 and Figure 5 As shown, the secondary hinge arm 300 includes a secondary hinge arm body 301 and a hinge part 302 hinged to the main hinge arm 200, the secondary hinge arm body 301 is roughly plate-shaped, the hinge part 302 includes a roughly cylindrical hinge body 303 and an extension plate 304, the hinge body 303 is formed as a whole with the secondary hinge arm body 301 through the extension plate 304, and the outer peripheral surface of the hinge body 303 of the hinge part 302 is configured with an open trigger part (Open Trigger Structure) 305.

[0079] The hinge portion 302 of the secondary hinge arm 300 is hinged to the main hinge arm 200 through the secondary shaft 202. In the first stage of the opening process, the secondary hinge arm 300 can rotate along the first direction around the secondary shaft 202. As the secondary hinge arm 300 rotates along the first direction, the opening trigger portion 305 of the secondary hinge arm 300 can contact the opening control rod 401. At this time, the opening trigger portion 305 can push the opening control rod 401 to rotate around the first pin 403 along the second direction (i.e., Figure 3 The main hinge arm 200 is rotated in the direction of the arrow B in the figure, so that one end of the opening control rod 401 is separated from the opening restriction portion 102. After one end of the opening control rod 401 is separated from the opening restriction portion 102, the opening restriction portion 102 no longer restricts the rotation of the opening control rod 401, so that the main hinge arm 200 can rotate around the main axis 201 along the first direction (i.e., Figure 3 (direction of arrow A).

[0080] In an exemplary embodiment, Figure 2 As shown, the main hinge arm body 203 of the main hinge arm 200 is provided with an open limit limiting portion (Open Limit Structure) 205 .

[0081] The secondary hinge arm 300 can be moved around the secondary axis 202 along a first direction (ie, Figure 3 The secondary hinge arm 300 is rotated in the direction of arrow A in the figure so that the extension plate 304 of the hinge portion 302 can contact the first side of the opening limit limiting portion 205. When the extension plate 304 contacts the first side of the opening limit limiting portion 205, the secondary hinge arm 300 cannot continue to rotate in the first direction, that is, the secondary hinge arm 300 cannot rotate around the secondary axis 202 in the first direction (that is, Figure 3 Continue to rotate in the direction of arrow A.

[0082] In the second stage of the opening process, the secondary hinge arm 300 drives the main hinge arm 200 to rotate around the hinge bracket 100 along the first direction. When the main hinge arm 200 rotates to the second main hinge position, one end of the closing control lever 501 of the closing control lever assembly 500 introduced later stops on the closing limiting portion 104, thereby preventing the main hinge arm 200 from rotating around the main axis 201 along the second direction.

[0083] In an exemplary embodiment, Figure 4 As shown, the hinge bracket 100 includes a side wall 103 corresponding to the closing lever assembly 500, and a closing restricting portion (Close Restricting Structure) 104 is configured on the outer surface of the side wall 103, and the closing restricting portion 104 can be located at a lower position than the main shaft 201. That is, the closing restricting portion 104 can be located on the opposite side of the opening restricting portion 102 with the main shaft 201 as a reference.

[0084] refer to Figure 2 As shown, the main hinge arm 200 further includes a second mounting plate 206 , and the second mounting plate 206 extends from the main hinge arm body 203 in a direction perpendicular to the main hinge arm body 203 .

[0085] Further references Figure 2 As shown, the closing lever assembly 500 includes a closing lever 501 and a second torsion spring 502 .

[0086] The closing control rod 501 is L-shaped, and the middle portion of the closing control rod 501 is hinged to the second mounting plate 206 of the main hinge arm 200 through a second pin 503 .

[0087] Further references Figures 8 to 10 As shown, one end of the second torsion spring 502 is mounted to the second mounting plate 206, and the other end of the second torsion spring 502 is mounted to the closing control rod 501 to provide a second torsional force to the closing control rod 501. The second torsional force causes one end of the closing control rod 501 to stop on the closing limiting portion 104 (see Figure 1 and Fig. 9 ), thereby making it impossible for the main hinge arm 200 to move around the main axis 201 along the second direction (ie, Figure 8 Rotate in the direction of arrow B).

[0088] In an exemplary embodiment, Figure 5 As shown, a closing trigger structure 306 is disposed on the outer peripheral surface of the hinge body 303 of the hinge portion 302 of the secondary hinge arm 300 .

[0089] In the first stage of the closing process, the secondary hinge arm 300 can be moved around the secondary axis 202 along the second direction (ie, Figure 8 As the secondary hinge arm 300 rotates in the second direction, the closing trigger portion 306 can contact the closing control rod 501. At this time, the closing trigger portion 306 can push the closing control rod 501 to rotate around the second pin 503 in the first direction (i.e., Figure 8 The closing lever 501 is rotated in the direction of the arrow A in the figure, so that one end of the closing lever 501 is separated from the closing restricting portion 104. After one end of the closing lever 501 is separated from the closing restricting portion 104, the closing restricting portion 104 no longer restricts the rotation of the closing lever 501, so that the main hinge arm 200 can rotate around the main axis 201 along the second direction (i.e., Figure 8 (direction of arrow B in the figure).

[0090] In an exemplary embodiment, Figure 5 As shown, the outer peripheral surface of the hinge body 303 of the hinge portion 302 of the secondary hinge arm 300 is further configured with a close limit structure 307 .

[0091] The secondary hinge arm 300 can be moved around the secondary axis 202 along the second direction (ie, Figure 8 The secondary hinge arm 300 is rotated in the direction of the arrow B in the figure so that the closing limit limiting portion 307 of the hinge portion 302 of the secondary hinge arm 300 can contact the second side of the opening limit limiting portion 205 of the main hinge arm body 203 of the main hinge arm 200. When the closing limit limiting portion 307 contacts the second side of the opening limit limiting portion 205, the secondary hinge arm 300 cannot continue to rotate in the second direction, that is, the secondary hinge arm 300 cannot continue to rotate in the second direction around the secondary axis 202 in the second stage of the closing process (that is, Figure 8 in the direction of arrow B).

[0092] In the second stage of the closing process, the secondary hinge arm 300 drives the main hinge arm 200 to rotate along the second direction around the hinge bracket 100. When the main hinge arm 200 rotates to the first main hinge position, one end of the opening control rod 401 of the opening control rod assembly 400 stops on the opening limiting portion 102, thereby preventing the main hinge arm 200 from rotating along the first direction around the main axis 201.

[0093] An embodiment of the present invention further provides a vehicle equipped with the above-mentioned tailgate hinge structure.

[0094] The operation of the tailgate hinge structure according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0095] Fig.11A fourth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention is shown in FIG. Fig.11 The middle main hinge arm 200 is in a first main hinge position, and the secondary hinge arm 300 is in a first secondary hinge position; Fig.12 A fifth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention is shown in FIG. Fig.12 The middle main hinge arm 200 is in a first main hinge position, and the secondary hinge arm 300 is in a second secondary hinge position; Fig.13 6 is a sixth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention. Fig.13 The state of the hinge structure Fig.12 The state of the central hinge structure is exactly the same, but the viewing angle is slightly different; Fig.14 for Fig.13 The enlarged view of point E; Fig.15 for Fig.13 The enlarged view of F; Fig.16 2 is a seventh schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention. Fig.16 The main hinge arm 200 is in the second main hinge position, and the secondary hinge arm 300 is in the second secondary hinge position; Fig.11 , Fig.12 and Fig.16 It is a side view of the tailgate hinge structure viewed from the third side to the fourth side of the main hinge arm 200 .

[0096] Fig.17 FIG. 8 is an eighth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention. Fig.17 The main hinge arm 200 is in the second main hinge position, and the secondary hinge arm 300 is in the second secondary hinge position; Fig.18 2 is a ninth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention. Fig.18 The main hinge arm 200 is in the second main hinge position, and the secondary hinge arm 300 is in the first secondary hinge position; Fig.19 10 is a tenth schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention. Fig.19 The state of the hinge structure and Fig.18 The state of the middle hinge structure is exactly the same, just the observation angle is different. Fig.19 Yes Fig.18 A perspective view of the tailgate hinge structure shown viewed from the inside to the outside; Fig. 20 for Fig.19 The enlarged view of G; Fig.21 11 is an eleventh schematic diagram showing a tailgate hinge structure according to an embodiment of the present invention. Fig.21 The main hinge arm 200 is in a first main hinge position, and the secondary hinge arm 300 is in a first secondary hinge position; Fig.17 , Fig.18 and Fig.21It is a side view of the tailgate hinge structure viewed from the fourth side to the third side of the main hinge arm 200 .

[0097] in, Fig.11 The state of the hinge structure and Fig.21 The state of the middle hinge structure is exactly the same, but the observation angle is just the opposite. Fig.16 The state of the hinge structure and Fig.17 The state of the middle hinge structure is exactly the same, but the observation angle is just opposite.

[0098] The opening process of the tailgate hinge structure is as follows:

[0099] like Fig.11 As shown, the main hinge arm 200 is in the first main hinge position, and the secondary hinge arm 300 is in the first secondary hinge position. At this time, one end of the opening control rod 401 of the opening control rod assembly 400 is stopped on the opening limiting portion 102, so that the main hinge arm 200 cannot rotate around the main axis 201 along the first direction.

[0100] Along Fig.11 The first direction (i.e., Fig.11 The secondary hinge arm 300 is pushed by the secondary hinge arm 300 in the direction of the arrow A in the middle, so that the secondary hinge arm 300 rotates from the first secondary hinge position around the secondary axis 202 along the first direction to the second secondary hinge position (see Fig.12 ).

[0101] During the rotation of the secondary hinge arm 300 along the first direction, the opening trigger portion 305 of the secondary hinge arm 300 contacts the opening control lever 401 (see Fig.15 ) and pushes the opening lever 401 around the first pin 403 along the second direction (ie, Fig.12 Rotate in the direction of arrow B).

[0102] like Figures 12 to 15 As shown, when the secondary hinge arm 300 rotates along the first direction to the second secondary hinge position, the first stage of the opening process ends. At this time, the extension plate 304 of the hinge portion 302 of the secondary hinge arm 300 contacts the first side of the opening limit limiting portion 205 of the main hinge arm 200 (see Fig.14 ), the secondary hinge arm 300 cannot continue to rotate around the secondary axis 202 along the first direction, and one end of the opening control rod 401 is separated from the opening limiting portion 102, so that the main hinge arm 200 can rotate around the secondary axis 202 along the first direction (that is, Fig.12 Rotate in the direction of arrow A).

[0103] The secondary hinge arm 300 continues to move along the first direction (ie, Fig.12The secondary hinge arm 300 drives the main hinge arm 200 to rotate around the main axis 201 along the first direction, thereby rotating the main hinge arm 200 from the first main hinge position to the second main hinge position (see Fig.16 ).

[0104] like Fig.17 As shown, when the main hinge arm 200 rotates to the second main hinge position, under the action of the second torsion force of the second torsion spring 502, one end of the closing control rod 501 of the closing control rod assembly 500 is stopped on the closing limiting portion 104, thereby preventing the main hinge arm 200 from rotating around the main axis 201 in the second direction.

[0105] The opening process is now completed and the tailgate hinge structure is fully opened.

[0106] The closing process of the tailgate hinge structure is as follows:

[0107] like Fig.17 As shown, the main hinge arm 200 is in the second main hinge position, and the secondary hinge arm 300 is in the second secondary hinge position. At this time, one end of the closing control rod 501 of the closing control rod assembly 500 is stopped on the closing limiting portion 104, and the main hinge arm 200 cannot rotate around the main axis 201 along the second direction.

[0108] Along Fig.17 The second direction (i.e., Fig.17 The secondary hinge arm 300 is pushed in the direction of the arrow B in the middle, so that the secondary hinge arm 300 rotates from the second secondary hinge position around the secondary axis 202 along the second direction to the first secondary hinge position (see Fig.18 ).

[0109] During the rotation of the secondary hinge arm 300 along the second direction, the closing trigger portion 306 of the secondary hinge arm 300 contacts the closing control rod 501 and pushes the closing control rod 501 to rotate around the second pin 503 along the first direction (ie, Fig.18 (direction of arrow A).

[0110] like Figures 18 to 20 As shown, when the secondary hinge arm 300 rotates to the first secondary hinge position along the second direction, the first stage of the closing process ends. At this time, the closing limit limiting portion 307 of the hinge portion 302 of the secondary hinge arm 300 contacts the second side of the opening limit limiting portion 205 of the main hinge arm body 203 of the main hinge arm 200 (see Fig. 20 ), the secondary hinge arm 300 cannot continue to rotate around the secondary axis 202 along the second direction, and one end of the closing control rod 501 is separated from the closing limiting portion 104, so that the main hinge arm 200 can rotate around the main axis 201 along the second direction (i.e., Fig.12Rotate in the direction of arrow B).

[0111] The secondary hinge arm 300 continues to move along the second direction (ie, Fig.18 The secondary hinge arm 300 drives the main hinge arm 200 to rotate around the hinge bracket 100 along the second direction, thereby rotating the main hinge arm 200 from the second main hinge position to the first main hinge position (see Fig.21 ).

[0112] like Fig.11 As shown, when the main hinge arm 200 rotates to the first main hinge position, under the action of the first torsion force of the first torsion spring 402, one end of the opening control rod 401 of the opening control rod assembly 400 is stopped on the opening limiting portion 102, thereby preventing the main hinge arm 200 from rotating around the main axis 201 along the first direction.

[0113] The closing process is now completed and the tailgate hinge structure is fully closed.

[0114] Fig. 22 It is a force analysis diagram of a tailgate hinge structure with a single rotating axis hinge in the prior art during the opening process; Fig.23 A schematic diagram showing a tailgate hinge structure with a single rotating axis hinge in the prior art rising to a balanced position during the opening process; Fig.24 A force analysis diagram of the tailgate hinge structure at the beginning of the first stage of the opening process according to the embodiment of the present invention; Fig.25 It is a schematic diagram showing that the tailgate hinge structure according to the embodiment of the present invention rises to a balanced position during the opening process.

[0115] like Fig. 22 As shown, the torque balance equation of the tailgate with a single rotation axis hinge in the prior art when initially opened is:

[0116] Fgl*Agl+Fopen*Aopen=mg*Amg+M Friction

[0117] Wherein, Fgl is the thrust of the gas lifter, Agl is the force arm of the thrust of the gas lifter, Fopen is the operating force of the user, Aopen is the force arm of the operating force of the user, mg is the weight of the tailgate, Amg is the force arm of the weight of the tailgate, and M Friction The torque provided by the friction force.

[0118] It can be seen from the moment balance equation that when the user's operating force Fopen is 0 at any position, this position is the equilibrium position of the tailgate with a single rotation axis hinge during the opening process (see Fig.23h in the figure). Beyond this position, the torque provided by the thrust provided by the gas lifter is greater than the sum of the torque provided by the weight of the tailgate and the torque provided by the friction force, and the tailgate can open automatically.

[0119] like Fig.24 As shown, the moment balance equation of the tailgate having the tailgate hinge structure according to the embodiment of the present invention when initially opened is:

[0120] Fgl*Agl′+Fopen′*Aopen′=mg*Amg′+M Friction

[0121] Wherein, Fgl is the thrust of the gas lifter, Agl' is the force arm of the thrust of the gas lifter, Fopen' is the operating force of the user, Aopen' is the force arm of the operating force of the user, mg is the weight of the tailgate, Amg' is the force arm of the weight of the tailgate, M Friction The torque provided by the friction force.

[0122] Among them, Amg′<Amg and Agl′>Agl, therefore, compared with the tailgate with a single rotation axis hinge, the tailgate with the tailgate hinge structure of the embodiment of the present invention reduces the predetermined height required to rise to the equilibrium position (see Fig.23 h and Fig.25 h').

[0123] For convenience of interpretation and precise definition of the appended claims, the terms "upper", "lower", "inner", "outer", "above", "below", "upper", "lower", "upward", "downward", "front", "back", "back", "inside", "outside", "inward", "outward", "interior", "exterior", "inner", "external", "forward", and "backward" are used to describe the features of the exemplary embodiments with reference to the positions of such features as shown in the accompanying drawings.

[0124] The foregoing description of the specific exemplary embodiments of the present invention is presented for the purpose of illustration and description. The foregoing description is not intended to be exhaustive, nor is it intended to limit the present invention to the precise form disclosed, and it is apparent that many changes and variations are possible in accordance with the above teachings. The exemplary embodiments are selected and described to explain the specific principles of the present invention and its practical application, so that other technical personnel in the art can realize and utilize the various exemplary embodiments of the present invention and its different selected forms and modified forms. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tailgate hinge structure, comprising: Hinge bracket; a main hinge arm including a first side hinged to the hinge bracket and including second to fourth sides; a secondary hinge arm including one side hinged to the second side of the primary hinge arm and including another side; an opening lever assembly hinged to a third side of the main hinge arm; as well as a closing lever assembly hinged to a fourth side of the main hinge arm; Wherein, in the first stage of the opening process, the secondary hinge arm can rotate from the first secondary hinge position around the second side of the main hinge arm along the first direction to the second secondary hinge position, and the main hinge arm cannot rotate around the hinge bracket due to the restriction of the opening control lever assembly; In the second stage of the opening process, the restriction of the opening control lever assembly is released, so that the secondary hinge arm can drive the main hinge arm to rotate from the first main hinge position around the hinge bracket along the first direction to the second main hinge position; In the first stage of the closing process, the secondary hinge arm can rotate from the second secondary hinge position to the first secondary hinge position along the second direction around the second side of the main hinge arm, and the main hinge arm cannot rotate around the hinge bracket due to the restriction of the closing lever assembly; In the second stage of the closing process, the restriction of the closing lever assembly is released, so that the secondary hinge arm can drive the main hinge arm to rotate from the second main hinge position around the hinge bracket along the second direction to the first main hinge position.

2. The tailgate hinge structure according to claim 1, wherein: A first side of the main hinge arm is hinged to the hinge bracket through a main shaft, and one side of the secondary hinge arm is hinged to a second side of the main hinge arm through a secondary shaft.

3. The tailgate hinge structure according to claim 2, wherein: The hinge bracket includes a side wall corresponding to the opening control rod assembly, and the outer surface of the side wall is configured with an opening limiting portion; The main hinge arm comprises a main hinge arm body and a first mounting plate, wherein the first mounting plate extends from the main hinge arm body in a direction perpendicular to the main hinge arm body; The opening control lever assembly comprises: an opening control lever, a portion of which is hinged to the first mounting plate via a first pin; as well as a first torsion spring, one end of which is mounted to the first mounting plate and the other end of which is mounted to the opening control rod to provide a first torsional force to the opening control rod; One end of the opening control rod is stopped on the opening limiting portion by a first torsional force, thereby preventing the main hinge arm from rotating around the main axis along the first direction.

4. The tailgate hinge structure according to claim 3, characterized in that: The secondary hinge arm comprises a hinge portion hinged to the main hinge arm, and an opening trigger portion is disposed on an outer peripheral surface of the hinge portion; The secondary hinge arm can rotate around the secondary axis in a first direction, so that the opening triggering portion can contact the opening control lever and push the opening control lever to rotate around the first pin in a second direction, thereby causing one end of the opening control lever to disengage from the opening limiting portion.

5. The tailgate hinge structure according to claim 4, characterized in that: The main hinge arm body of the main hinge arm is provided with an opening limit limiting portion; The secondary hinge arm can rotate around the secondary axis along a first direction so that the hinge portion contacts the opening limit restricting portion, thereby restricting further rotation of the secondary hinge arm.

6. The tailgate hinge structure according to claim 5, wherein: The hinge bracket includes a side wall corresponding to the closing control rod assembly, and the outer surface of the side wall is configured with a closing restriction portion; The main hinge arm further includes a second mounting plate extending from the main hinge arm body in a direction perpendicular to the main hinge arm body; The closing lever assembly comprises: A closing lever, a middle portion of which is hinged to the second mounting plate by a second pin; and a second torsion spring, one end of which is mounted to the second mounting plate and the other end of which is mounted to the closing control rod to provide a second torsional force to the closing control rod; One end of the closing control rod is abutted against the closing limiting portion by a second torsional force, thereby preventing the main hinge arm from rotating around the main axis along the second direction.

7. The tailgate hinge structure according to claim 6, wherein: The outer peripheral surface of the hinged portion of the secondary hinge arm is provided with a closing trigger portion; The secondary hinge arm can rotate around the secondary axis in the second direction, so that the closing triggering portion can contact the closing control lever and push the closing control lever to rotate around the second pin in the first direction, thereby causing one end of the closing control lever to disengage from the closing restricting portion.

8. The tailgate hinge structure according to claim 7, wherein: The outer peripheral surface of the hinge portion of the secondary hinge arm is further provided with a closing limit limiting portion; The secondary hinge arm can rotate around the secondary axis along the second direction so that the closing limit limiting portion of the hinge portion of the secondary hinge arm contacts the main hinge arm body of the main hinge arm, thereby limiting the secondary hinge arm from further rotating.

9. The tailgate hinge structure according to claim 1, characterized in that: The hinge bracket is connected to the vehicle body, and the other side of the secondary hinge arm is connected to the tailgate.

10. A vehicle, characterized in that: It is equipped with a tailgate hinge structure as described in any one of claims 1 to 9.

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