Rear tail door inner plate, rear tail door structure assembly and vehicle

Abstract

The utility model provides a rear tail door inner plate, a rear tail door structure assembly and a vehicle, and belongs to the technical field of vehicle tail doors, the rear tail door inner plate comprises an inner plate main body, an outer ring reinforcing convex rib on the inner plate main body and a concentric-square-shaped reinforcing structure formed by the inner ring reinforcing convex rib on the inner plate main body, so that the inner plate main body has relatively strong structural strength, and the inner plate main body is not damaged. By reducing the number of parts between the rear tail door inner plate and the rear tail door outer plate, the research, development and manufacturing cost of the parts is reduced, the problem of tolerance accumulation caused by assembly of multiple parts is solved, and the lightweight design requirement of the rear tail door is met. The cavity of the inner ring reinforcing convex rib is divided into a plurality of sections through the inner ring reinforcing ribs, so that the overall rigidity and modality of the rear tail door assembly are improved. The rear tail door outer plate is supported through the auxiliary reinforcing convex ribs and the positioning reinforcing convex ribs, collapse deformation of the middle area of the rear tail door outer plate is avoided, the delicate sense of the appearance of the assembled rear tail door outer plate is improved, the positioning reinforcing convex ribs can replace a traditional positioning hole structure, and the development cost of the positioning tool is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vehicle tail door, concretely relates to a rear tail door inner plate, rear tail door structure assembly and vehicle. BACKGROUND

[0002] The rear tail door is an important component for sealing the trunk in a three-door car or the like, and is usually designed as an upward-opening liftgate, wherein hinges are arranged on the left and right sides of the top of the rear tail door to realize the opening and closing function of the rear tail door.

[0003] The rear tail door generally comprises an inner plate, an outer plate, and a reinforcing member and a supporting member arranged between the inner plate and the outer plate, and the reinforcing member and the supporting member are used to reinforce the whole rear tail door. The existing rear tail door has the following defects: firstly, a large number of reinforcing members and supporting members are arranged in some vehicle models, which leads to a large overall weight of the rear tail door and is not conducive to the energy saving and consumption reduction of the whole vehicle; secondly, a separate mold, clamp and gauge need to be designed and developed for each reinforcing member and supporting member, which leads to a high manufacturing cost of the rear tail door; and thirdly, a large cumulative tolerance is easily generated during the assembly of a large number of reinforcing members and supporting members, which further affects the overall assembly precision of the rear tail door. UTILITY MODEL CONTENTS

[0004] The utility model embodiment provides a rear tail door inner plate, rear tail door structure assembly and vehicle, aims at solving the problems that a large number of reinforcing members and supporting members need to be arranged in the existing rear tail door, which leads to a large weight of the rear tail door, a high manufacturing cost, and the overall assembly precision is difficult to further improve.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] In a first aspect, the utility model embodiment provides a rear tail door inner plate, comprising:

[0007] An inner plate body, the edge of the inner plate body is attached and connected with a rear tail door outer plate;

[0008] An outer ring reinforcing rib and an inner ring reinforcing rib are arranged on the inner plate body, the outer ring reinforcing rib is adjacent to the edge of the inner plate body, and the inner ring reinforcing rib is arranged in a spaced manner with the outer ring reinforcing rib;

[0009] A lock catch mounting area and two hinge mounting areas are further formed on the inner plate body, the hinge mounting area is located between the outer ring reinforcing rib and the inner ring reinforcing rib, and the lock catch mounting area is located at the bottom of the outer ring reinforcing rib and the inner ring reinforcing rib.

[0010] In the existing tailgate, the inner plate itself is not designed with a large depth of drawbead, so the structure of the inner plate itself is relatively flat, and some process holes, mounting holes are set on the inner plate due to process requirements, which weakens the structure of the inner plate, and the hinge, lock catch and other mounting areas also bear a large force during the opening and closing process of the tailgate. In order to avoid the problem of deformation of the inner plate, reinforcing supports are needed to be set at the hinge mounting area, lock catch mounting area, process hole opening area and other positions, which results in a high number of additional parts on the inner plate. Not only does it need to develop molds, fixtures and gauges for different parts, but it also causes high cumulative tolerance during assembly, which affects the overall quality of the tailgate and does not meet the lightweight design requirements.

[0011] To solve this problem, the scheme shown in the embodiments of the present application sets a circle of outer reinforcing ribs near the edge of the inner plate body, which strengthens the edge of the inner plate body as a whole and improves the overall bending and torsional resistance of the inner plate body. At the same time, the inner reinforcing ribs are set inside the outer reinforcing ribs, which strengthens the middle part of the inner plate body and avoids the problem of deformation of the middle part of the inner plate body due to the weakening structure of the process holes. In addition, the hinge reinforcing area is set between the outer reinforcing ribs and the inner reinforcing ribs, which not only meets the position requirements of the hinge installation, but also quickly decomposes and transmits the force generated by the hinge action to other positions of the inner plate body through the outer reinforcing ribs and the inner reinforcing ribs, avoiding the problem of local stress concentration in the hinge mounting area. Similarly, the lock catch mounting area is set at the lower part of the outer reinforcing ribs and the inner reinforcing ribs, and the force generated by the lock catch during use is quickly decomposed and transmitted to other positions of the inner plate body through the outer reinforcing ribs and the inner reinforcing ribs, avoiding the problem of local stress concentration in the lock catch mounting area.

[0012] Overall, the "back" type reinforcing structure formed by the outer reinforcing ribs and the inner reinforcing ribs on the inner plate body has a wide coverage of the reinforcing ribs, effectively improving the structural strength of the inner plate reinforcing plate in the middle and edge, achieving overall structural reinforcement of the inner plate body, and effectively decomposing and diffusing the force on the hinge mounting area and the lock catch mounting area through the outer reinforcing ribs and the inner reinforcing ribs, achieving reinforcement of the corresponding area. Compared with the traditional inner plate with relatively flat structure, the inner plate body of the present application has strong structural strength, and does not need to set reinforcing support parts at the opening position, so it can effectively reduce the number of parts between the inner plate and the outer plate of the tailgate, thereby reducing the development and manufacturing cost of the parts, effectively improving the problem of tolerance accumulation caused by multiple part assembly, and meeting the lightweight design requirements of the tailgate.

[0013] In combination with the first aspect, in a possible implementation manner, the cavity of the inner-circle reinforcing rib is provided with a plurality of inner-circle reinforcing ribs, the plurality of inner-circle reinforcing ribs are distributed along the length direction of the inner-circle reinforcing rib, and each of the inner-circle reinforcing ribs supports the two side wall plates connected to the inner-circle reinforcing rib along the width direction of the inner-circle reinforcing rib. The inner-circle reinforcing ribs divide the cavity of the inner-circle reinforcing rib into multiple sections, forming a "ladder"-shaped multi-cavity reinforcing structure. The multi-cavity design is used to disperse the force acting on the inner-circle reinforcing rib, improve the reinforcing effect of the inner-circle reinforcing rib on the middle region of the inner plate body, and further improve the rigidity and modal of the whole tailgate assembly.

[0014] In combination with the first aspect, in a possible implementation manner, the inner plate body is further provided with an auxiliary reinforcing rib, the auxiliary reinforcing rib is located in the inner circle of the inner-circle reinforcing rib and is connected to the inner-circle reinforcing rib, and the outer convex surface of the auxiliary reinforcing rib is connected to the inner plate of the tailgate. The auxiliary reinforcing rib can reinforce and support the inner-circle reinforcing rib in a direction that is at an angle to the length direction of the inner-circle reinforcing rib, further improving the reinforcing effect of the middle region of the inner plate body. At the same time, the auxiliary reinforcing rib supports the outer plate of the tailgate, avoiding the problem of collapse and deformation of the middle region of the outer plate of the tailgate, and improving the delicate appearance of the assembled tailgate outer plate.

[0015] In some embodiments, the cavity of the auxiliary reinforcing rib is provided with a plurality of transverse auxiliary reinforcing ribs, the plurality of transverse auxiliary reinforcing ribs are distributed along the length direction of the auxiliary reinforcing rib, and each of the transverse auxiliary reinforcing ribs supports the two side wall plates connected to the auxiliary reinforcing rib along the width direction of the auxiliary reinforcing rib. The transverse auxiliary reinforcing ribs divide the cavity of the auxiliary reinforcing rib into multiple sections, forming a "ladder"-shaped multi-cavity reinforcing structure. The multi-cavity design is used to disperse the force acting on the auxiliary reinforcing rib, improve the reinforcing effect of the auxiliary reinforcing rib on the middle region of the inner plate body, and further improve the rigidity and modal of the whole tailgate assembly.

[0016] In combination with the first aspect, in a possible implementation manner, the inner plate body is further provided with two groups of positioning reinforcing ribs, the positioning reinforcing ribs are located in the inner circle of the inner-circle reinforcing rib, the two groups of positioning reinforcing ribs are symmetrically arranged on the left and right sides of the inner plate body, and the outer convex surface of the positioning reinforcing rib is connected to the inner plate of the tailgate. When the tailgate inner plate and the tailgate outer plate are assembled, the outward convex shape of the positioning reinforcing rib forms a cavity that is open inward, which can be used as a positioning point of the tooling, replacing the traditional positioning hole structure and reducing the development cost of the positioning tooling. At the same time, the two groups of positioning reinforcing ribs can provide support on the left and right sides of the middle region of the tailgate outer plate, further avoiding the problem of collapse and deformation of the middle region of the tailgate outer plate, realizing the integrated design of the function of the positioning reinforcing rib, and simplifying the structure of the tailgate inner plate.

[0017] In some embodiments, the inner plate body is further provided with an auxiliary reinforcing rib, which is located in the inner circle of the inner circle reinforcing rib and corresponds to the middle position of the top of the inner circle reinforcing rib, the auxiliary reinforcing rib is connected with the inner circle reinforcing rib, and the outer convex surface is connected with the inner plate of the tailgate, the auxiliary reinforcing rib and the two groups of positioning reinforcing ribs are in triangular distribution. By designing the distribution mode of the auxiliary reinforcing rib and the two groups of positioning reinforcing ribs as triangular distribution, the stiffness performance requirement of the middle region of the tailgate outer plate can be further improved, and collapse deformation can be prevented.

[0018] In combination with the first aspect, in a possible implementation manner, the inner plate body is a thermosetting composite material component. By using the thermosetting composite material, the integrated design of the inner plate body can be promoted, the number of auxiliary reinforcing components is reduced to the greatest extent, the split component lap joint gap is avoided, the delicate feeling of the visible surface is improved, and under the premise of ensuring the stiffness performance of the tailgate inner plate, the effective weight reduction of the tailgate inner plate is realized, the overall weight reduction of the tailgate assembly is realized, and the fuel consumption during driving is reduced.

[0019] In the second aspect, the utility model embodiment further provides a tailgate structure assembly, which comprises a tailgate outer plate, a hinge mounting plate, a lock catch mounting plate, and the tailgate inner plate described above.

[0020] The inner side surface of the tailgate outer plate is connected with the edge of the inner plate body in the tailgate inner plate.

[0021] The hinge mounting plate is located between the tailgate outer plate and the inner plate body, and is connected with the hinge mounting area in the inner plate body.

[0022] The lock catch mounting plate is located between the tailgate outer plate and the inner plate body, and is connected with the lock catch mounting area in the inner plate body.

[0023] Compared with the prior art, the scheme shown in the embodiment of the application adopts the tailgate inner plate described above, the hinge mounting plate and the lock catch mounting plate are arranged in the hinge mounting area and the lock catch mounting area respectively, a reinforcing support component does not need to be arranged at the opening position, the number of components between the tailgate inner plate and the tailgate outer plate is effectively reduced, the overall research and development and manufacturing cost of the tailgate assembly is reduced, the assembly precision of the tailgate assembly is improved, and the lightweight design requirement of the tailgate assembly is met.

[0024] In combination with the second aspect, in a possible implementation manner, the outer side surface of the corner area in the hinge mounting plate is connected with the tailgate outer plate, and the corner area is the area adjacent to the corner of the inner plate body in the hinge mounting plate.

[0025] The outer side surface of the left part and the outer side surface of the right part of the lock catch mounting plate are respectively attached to the rear door outer plate.

[0026] The corner area of the two hinge mounting plates is left-right symmetrical, and by bonding the area to the rear door outer plate, the problem of corner lifting of the hinge mounting plate can be effectively avoided, and the rigidity of the corner area of the rear door assembly can be improved. The lock catch mounting plate generally corresponds to the lower part of the photograph mounting area on the rear door outer plate, and by effectively supporting the lower part of the photograph mounting area through the lock catch mounting plate, and in combination with the scheme of supporting the upper part of the photograph mounting area through the positioning reinforcing ribs, the overall photograph mounting area can be effectively supported, the rigidity performance requirement of the area can be guaranteed, and the problem of concave deformation can be effectively prevented.

[0027] In a third aspect, the utility model embodiment further provides a vehicle comprising the rear door structure assembly.

[0028] Compared with the prior art, the scheme shown in the embodiment of the application can reduce the research and development and manufacturing cost of the rear door assembly as a whole, optimize the overall vehicle cost, improve the assembly precision of the rear door assembly as a whole, improve the reliability of the rear door, and improve the delicacy of the vehicle, reduce the weight of the rear door assembly as a whole, further reduce the weight of the vehicle, and thus optimize the energy consumption of the vehicle and improve the market competitiveness of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 An assembly front view of the rear door structure assembly, the hinge and the lock catch is provided for the utility model embodiment;

[0030] Figure 2 An assembly perspective view of the rear door structure assembly, the hinge and the lock catch is provided for the utility model embodiment;

[0031] Figure 3 A perspective view of the rear door structure assembly is provided for the utility model embodiment;

[0032] Figure 4 A front view of the rear door structure assembly is provided for the utility model embodiment;

[0033] Figure 5 An exploded view of the rear door structure assembly is provided for the utility model embodiment;

[0034] Figure 6 A front view of the rear door inner plate is provided for the utility model embodiment;

[0035] Figure 7 A Figure 6 A-A sectional view is provided for the utility model embodiment;

[0036] Figure 8 B-B sectional view of Figure 6 B-B sectional view of

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] 11, tail gate inner panel; 110, main body of inner panel; 111, process hole; 120, outer ring reinforcing rib; 121, sealing mounting surface; 130, inner ring reinforcing rib; 131, inner ring reinforcing rib; 140, lock mounting boss; 150, auxiliary reinforcing rib; 151, transverse auxiliary reinforcing rib; 152, longitudinal auxiliary reinforcing rib; 160, positioning reinforcing rib; 170, hinge mounting boss; 171, hinge mounting surface; 180, limiting mounting boss; 181, limiting mounting surface; 190, buffer mounting boss; 191, buffer mounting surface; 200, stepped portion; 12, tail gate outer panel; 13, hinge; 14, lock; 15, hinge mounting plate; 1510, hinge support boss; 16, lock mounting plate; 1610, lock support boss; 17, limiting block; 18, buffer block; 19, sealing strip. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0040] In the claims, specification and above drawings of the present application, unless otherwise explicitly defined, the terms "first", "second" or "third" are used only to distinguish different objects, and are not used to describe a specific order.

[0041] In the claims, specification and above drawings of the present application, the terms "up", "down", "front", "rear", "left", "right" are the same as the up-down direction, front-rear direction and left-right direction of the vehicle body. For the orientation words, unless otherwise explicitly defined, the orientation words such as "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "high", "low" indicate the orientation or position relationship based on the orientation and position relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present application.

[0042] In the claims, the specification, and the drawings of the present application, terms such as "fixed connection" or "fixedly connected" should be construed in a broad manner unless otherwise explicitly defined, that is, any connection mode without displacement relationship and relative rotation relationship between the two, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.

[0043] In the claims, the specification, and the drawings of the present application, terms such as "including", "having" and their variants are intended to mean "containing but not limited to".

[0044] In the claims, the specification, and the drawings of the present application, if the term "fitting connection" is used, its implementation mode includes but is not limited to fitting bonding, fitting welding, fitting connection through threaded connecting pieces, etc.

[0045] Please refer to Figures 1 to 8 , now the rear door inner plate 11 provided by the utility model will be described. The rear door inner plate 11 comprises an inner plate body 110, the edge of the inner plate body 110 is connected with the rear door outer plate 12 in a fitting manner; an outer ring reinforcing rib 120 and an inner ring reinforcing rib 130 are arranged on the inner plate body 110, the outer ring reinforcing rib 120 is adjacent to the edge of the inner plate body 110, and the inner ring reinforcing rib 130 is arranged in a spaced manner with the outer ring reinforcing rib 120; a lock catch mounting area and two hinge mounting areas are further formed on the inner plate body 110, the hinge mounting area is located between the outer ring reinforcing rib 120 and the inner ring reinforcing rib 130, and the lock catch mounting area is located at the bottom of the outer ring reinforcing rib 120 and the inner ring reinforcing rib 130. Among them, the inner ring reinforcing rib 130 and the outer ring reinforcing rib 120 are both rib structures integrally formed with the inner plate body 110, and the inner ring reinforcing rib 130 and the outer ring reinforcing rib 120 both protrude outward.

[0046] In the embodiment, the number of the inner ring reinforcing rib 130 can be one ring or multiple rings, Figure 6 An embodiment in which only one ring of inner ring reinforcing ribs 130 is arranged is shown in FIG. Figure 6 In the embodiment, the outer ring reinforcing rib 120 is distributed along the dotted line frame of the outer ring, and the inner ring reinforcing rib 130 is distributed along the dotted line frame of the inner ring.

[0047] In the embodiment, in order to meet the reliability of reinforcement, the outer ring reinforcing rib 120 and the inner ring reinforcing rib 130 are both arranged continuously along the circumference of the inner plate body 110.

[0048] In the embodiment, the inner plate body 110 is provided with process holes 111 to meet the forming and assembly requirements of the inner plate body 110 and peripheral components. The number of process holes 111 is not limited, and the process holes 111 are generally arranged at the inner circle of the inner circle reinforcing rib 130 (as shown in Figures 1 to 6 of course, when the rear door has more functions, the number of process holes 111 is large, and the rear door needs to be assembled with more functional modules. Some process holes 111 can be arranged between the inner circle reinforcing rib 130 and the outer circle reinforcing rib 120, which will not be listed in detail here.

[0049] In the existing rear door, the inner plate itself is not designed with a large depth of drawing rib, so that the structure of the inner plate is relatively flat. However, some process holes 111 and mounting holes are arranged on the inner plate due to process requirements, which weakens the structure of the inner plate. In addition, the hinge 13 and the lock catch 14 are subjected to a large force during the opening and closing of the rear door. In order to avoid deformation of the inner plate, reinforcing supports are arranged at the hinge mounting area, the lock catch mounting area, and the process hole 111 opening area. This results in a large number of additional parts on the inner plate, which not only requires the development of molds, fixtures, and gauges for different parts, but also increases the cumulative assembly tolerance, which affects the overall quality of the rear door and does not meet the lightweight design requirements.

[0050] The rear door inner plate 11 provided in the embodiment has an outer circle reinforcing rib 120 arranged near the edge of the inner plate body 110 to strengthen the edge of the inner plate body 110 and improve the bending and torsional resistance of the inner plate body 110. In addition, an inner circle reinforcing rib 130 is arranged at the inner circle of the outer circle reinforcing rib 120 to strengthen the middle part of the inner plate body 110 and avoid deformation of the middle part of the inner plate body 110 due to the weakening structure of the process holes 111. Furthermore, the hinge 13 reinforcing area is arranged between the outer circle reinforcing rib 120 and the inner circle reinforcing rib 130, which not only meets the position requirements of the hinge 13 mounting, but also quickly decomposes and transmits the force generated by the hinge 13 action to other positions of the inner plate body 110 through the outer circle reinforcing rib 120 and the inner circle reinforcing rib 130, avoiding local stress concentration in the hinge mounting area. Similarly, the lock catch mounting area is arranged at the lower part of the outer circle reinforcing rib 120 and the inner circle reinforcing rib 130, and the force generated by the lock catch 14 during use is quickly decomposed and transmitted to other positions of the inner plate body 110 through the outer circle reinforcing rib 120 and the inner circle reinforcing rib 130, avoiding local stress concentration in the lock catch mounting area.

[0051] Generally speaking, the "hui"-shaped strengthening structure formed by the outer-ring strengthening ribs 120 and the inner-ring strengthening ribs 130 on the inner panel main body 110 has a wide coverage area of the strengthening ribs, effectively enhancing the structural strength of the inner panel reinforcement plate itself in the middle and at the edges, achieving comprehensive structural strengthening of the inner panel main body 110. Moreover, the acting forces on the hinge installation area and the latch installation area can be effectively decomposed and diffused through the outer-ring strengthening ribs and the inner-ring strengthening ribs 130, realizing the strengthening of the corresponding areas. Compared with the traditional inner panel with a relatively flat structure, the inner panel main body 110 of this embodiment itself has strong structural strength, and there is no need to set strengthening support parts at the opening positions. Therefore, the number of parts between the inner panel 11 of the rear tailgate and the outer panel 12 of the rear tailgate can be effectively reduced, thereby reducing the R & D and manufacturing costs of the parts, effectively improving the tolerance accumulation problem caused by the assembly of multiple parts. At the same time, it can also meet the lightweight design requirements of the rear tailgate.

[0052] It should be noted that the latch installation area is located at the bottom of the outer-ring strengthening ribs 120 and the inner-ring strengthening ribs 130, specifically referring to: the latch installation area is located in the outer ring at the bottom of the outer-ring strengthening ribs 120; or, the latch installation area is located in the inner ring at the bottom of the inner-ring strengthening ribs 130; or, the latch installation area is located between the bottom of the outer-ring strengthening ribs 120 and the bottom of the inner-ring strengthening ribs 130; or, the latch installation area covers the bottom of the outer-ring strengthening ribs 120 and the bottom of the inner-ring strengthening ribs 130. This embodiment exemplarily shows the way that the latch installation area covers the bottom of the outer-ring strengthening ribs 120 and the bottom of the inner-ring strengthening ribs 130, as Figure 4 and Figure 5 shown.

[0053] Optionally, in order to facilitate the installation of the latch 14, a latch installation boss 140 protruding inward is provided on the inner panel main body 110, and the lower side wall of the latch installation boss 140 is used to install the latch 14, as Figures 1 to 3 shown. More specifically, the latch installation boss 140 is located in the inner ring at the bottom of the inner-ring strengthening ribs 130.

[0054] In some specific embodiments, a stepped portion 200 extending outward is formed at the edge of the inner panel main body 110, and the stepped surface of the stepped portion 200 is in fit connection with the inner side surface of the outer panel 12 of the rear tailgate, as Figures 6 to 8 shown. Referring to Figure 7 and Figure 8 , the stepped portion 200 and the outer-ring strengthening ribs 120 cooperate to form a "ji"-shaped cross-section. The outer-ring strengthening ribs 120 themselves form a "ji"-shaped cross-section. The outer-ring strengthening ribs 120 and the inner-ring strengthening ribs 130 cooperate to form a "ji"-shaped cross-section. The inner-ring strengthening ribs 130 themselves form a "ji"-shaped cross-section. The design of multiple "ji"-shaped cross-sections enhances the stiffness of the edge and the middle of the inner panel main body 110, improving the bending and torsion resistance of the inner panel 11 of the rear tailgate.

[0055] In some embodiments, referring to Figures 1 to 3 The cavity of the inner ring reinforcing rib 130 is provided with a plurality of inner ring reinforcing ribs 131 distributed along the length direction of the inner ring reinforcing rib 130, and each inner ring reinforcing rib 131 supports the two side wall plates connected to the inner ring reinforcing rib 130 along the width direction of the inner ring reinforcing rib 130. The inner ring reinforcing rib 131 divides the cavity of the inner ring reinforcing rib 130 into multiple sections, forming a "ladder"-shaped multi-cavity reinforcing structure. The multi-cavity design disperses the force acting on the inner ring reinforcing rib 130, improves the reinforcing effect of the inner ring reinforcing rib 130 on the middle region of the inner plate body 110, and further improves the overall stiffness and modal of the tailgate assembly.

[0056] Optionally, the cavity of the inner ring reinforcing rib 130 has a cross-sectional width that is wider inside and narrower outside, which further improves the reinforcing effect of the inner ring reinforcing rib 130 on the middle region of the inner plate body 110 by the structural stability of the trapezoidal shape.

[0057] In some embodiments, referring to Figures 1 to 6 The inner plate body 110 is also provided with an auxiliary reinforcing rib 150, which is located in the inner ring of the inner ring reinforcing rib 130 and is connected to the inner ring reinforcing rib 130. The outer convex surface of the auxiliary reinforcing rib 150 is connected to the tailgate inner plate 11. The connection between the auxiliary reinforcing rib 150 and the tailgate inner plate 11 is a glue bonding. The auxiliary reinforcing rib 150 can reinforce and support the inner ring reinforcing rib 130 in a direction that forms an angle with the length direction of the inner ring reinforcing rib 130, further improving the reinforcing effect of the middle region of the inner plate body 110. At the same time, the auxiliary reinforcing rib 150 supports the tailgate outer plate 12, preventing the middle region of the tailgate outer plate 12 from collapsing and deforming, and improving the delicate appearance of the assembled tailgate outer plate 12. In specific implementation, the extension direction of the auxiliary reinforcing rib 150 is perpendicular to the corresponding position of the inner ring reinforcing rib 130, improving the uniformity of the force, and increasing the area of the outer convex surface of the auxiliary reinforcing rib 150 to provide greater support for the tailgate outer plate 12.

[0058] In some embodiments, referring to Figures 1 to 3 and Figure 7The cavity of the auxiliary reinforcing rib 150 is provided with a plurality of transverse auxiliary reinforcing ribs 151 distributed along the length direction of the auxiliary reinforcing rib 150, and each transverse auxiliary reinforcing rib 151 supports the two side wall plates connected to the auxiliary reinforcing rib 150 along the width direction of the auxiliary reinforcing rib 150. The transverse auxiliary reinforcing ribs 151 divide the cavity of the auxiliary reinforcing rib 150 into multiple sections, forming a "ladder"-shaped multi-cavity reinforcing structure. The multi-cavity design disperses the force acting on the auxiliary reinforcing rib 150, improves the reinforcing effect of the auxiliary reinforcing rib 150 on the middle region of the inner panel body 110, and further improves the overall stiffness and modal of the tailgate assembly.

[0059] Optionally, the cavity of the auxiliary reinforcing rib 150 has a cross-sectional width that is wider inside and narrower outside, which further improves the reinforcing effect of the auxiliary reinforcing rib 150 on the middle region of the inner panel body 110 by the structural stability of the trapezoidal shape.

[0060] Optionally, the included angle between the transverse auxiliary reinforcing rib 151 and the outer wall plate of the auxiliary reinforcing rib 150 is 60°-85° (e.g., 70°, 75°, 80°), which enhances the reinforcing effect of the transverse auxiliary reinforcing rib 151 and further improves the overall stiffness and modal of the tailgate assembly.

[0061] On the basis of the above embodiments, referring to Figure 1 The cavity of the auxiliary reinforcing rib 150 is also provided with a longitudinal auxiliary reinforcing rib 152 extending along the length direction of the auxiliary reinforcing rib 150 and supporting the two side wall plates connected to the auxiliary reinforcing rib 150 along the length direction of the auxiliary reinforcing rib 150. The longitudinal auxiliary reinforcing rib 152 is arranged transversely to the transverse auxiliary reinforcing rib 151, improving the multi-directional load-bearing performance of the reinforcing ribs inside the auxiliary reinforcing rib 150 and further improving the overall reinforcing effect of the auxiliary reinforcing rib 150.

[0062] More specifically, the end of the auxiliary reinforcing rib 150 extends to the outer circle of the inner circle reinforcing rib 130, and the longitudinal auxiliary reinforcing rib 152 extends into the inner circle reinforcing rib 130.

[0063] In some embodiments, referring to Figures 1 to 6 ​The inner plate body 110 is further provided with two groups of positioning reinforcing ribs 160 located in the inner circle of the inner circle reinforcing ribs 130. The two groups of positioning reinforcing ribs 160 are symmetrically arranged on the left and right sides of the inner plate body 110. The outer convex surface of the positioning reinforcing rib 160 is connected (for example, glued) with the tailgate inner plate 11. When the tailgate inner plate 11 and the tailgate outer plate are assembled, the outward convex shape of the positioning reinforcing rib 160 forms a cavity that opens inward, which can be used as a positioning point of the tooling, replacing the traditional positioning hole structure, reducing the development cost of the positioning tooling. At the same time, the two groups of positioning reinforcing ribs 160 can provide support on the left and right sides of the middle part of the tailgate outer plate 12, which not only further avoids the problem of collapse deformation of the middle part of the tailgate outer plate 12, but also realizes the integrated design of the function of the positioning reinforcing rib 160, which is beneficial to simplify the structure of the tailgate inner plate 11.

[0064] Optionally, among the positioning reinforcing ribs 160, the longest side wall is designed as a stepped wall surface, which is convenient for positioning the rib forming during manufacturing and also facilitates the demolding of the inner plate body 110.

[0065] In some more specific embodiments, referring to Figures 1 to 3 The inner plate body 110 is further provided with an auxiliary reinforcing rib 150 located in the inner circle of the inner circle reinforcing rib 130 and corresponding to the middle position of the top of the inner circle reinforcing rib 130. The auxiliary reinforcing rib 150 is connected with the inner circle reinforcing rib 130, and the outer convex surface is connected with the tailgate inner plate 11. The auxiliary reinforcing rib 150 and the two groups of positioning reinforcing ribs 160 are in a triangular distribution. By designing the distribution of the auxiliary reinforcing rib 150 and the two groups of positioning reinforcing ribs 160 as a triangular distribution, the stiffness performance requirement of the middle area of the tailgate outer plate 12 can be further improved to prevent collapse deformation.

[0066] Optionally, the lower part of the tailgate outer plate 12 is provided with a photograph mounting area, and the two groups of positioning reinforcing ribs 160 correspond to the upper part of the photograph mounting area to support the photograph mounting area and prevent collapse deformation of the area.

[0067] The inner panel of the tailgate is generally made of conventional steel or aluminum alloy material. Due to the limitation of the physical properties (including ductility and thinning rate) of the material itself, it is difficult for the inner panel to meet the forming requirements of large-depth concave-convex structures through stamping. It is difficult to form two-ring reinforcing ribs, and problems such as cracking, wrinkling and springback are likely to occur during the forming process. This also leads to the situation that the existing inner panel is mostly flat, and more parts need to be attached to the inner panel to meet the requirements of reinforcement and support. Splitting and jointing of parts are inevitable, which directly affects the delicate feeling of the secondary surface. In order to solve this problem, in some embodiments, the inner panel body 110 is a thermosetting composite material component. The thermosetting composite material fully utilizes the advantages of various materials through the combination of different materials, has the characteristics of high strength, light weight and corrosion resistance, and the low density and light weight of the composite material can effectively reduce the weight of the inner panel body 110, thereby reducing the overall weight of the tailgate, and meeting the design requirements of lightweight. The good corrosion resistance of the composite material can enable the tailgate inner panel 11 to be used in harsh environments for a long time, and meet the service life requirements of the tailgate. The forming of the thermosetting composite material can be realized by mold pressing. This forming process can realize high-precision and high-complexity product manufacturing, and can meet the requirements of the inner panel body 110 having a large-depth concave-convex structure and other complex shapes, thereby enabling more flexible design of the tailgate inner panel 11 to meet special requirements. The forming cycle of the thermosetting composite material is short, the production efficiency is high, and it is suitable for mass production, which is conducive to reducing production costs. By using the thermosetting composite material, it is more conducive to promoting the integrated design of the inner panel body 110, so as to minimize the number of auxiliary reinforcing parts, avoid splitting and jointing of parts, and improve the delicate feeling of the visible surface. In addition, under the premise of ensuring the stiffness performance of the tailgate inner panel 11, the effective weight reduction of the tailgate inner panel 11 is realized, the overall weight of the tailgate assembly is reduced, and the fuel consumption during driving is reduced.

[0068] Optionally, the material of the inner panel body 110 is sheet molding compound (SMC), which is a kind of glass fiber reinforced thermosetting composite material. The main components include unsaturated polyester resin, glass fiber, low shrinkage additive, filler and various additives. The material has a low density of 1.1-1.3 g / cm³, which is lower than the density of traditional steel (7.85 g / cm³) and aluminum alloy (2.7 g / cm³), thereby realizing the weight reduction requirement. Of course, the inner panel body 110 can also be made of polypropylene (PP), polyphenylene sulfide (PPS), acrylonitrile-butadiene-styrene copolymer (ABS) and other materials, which are not limited herein.

[0069] Based on the same inventive concept, refer to Figures 1 to 5This application embodiment also provides a rear tailgate structural assembly, including a rear tailgate outer panel 12, a hinge mounting plate 15, a latch mounting plate 16, and the aforementioned rear tailgate inner panel 11; the inner side of the rear tailgate outer panel 12 is fitted and connected to the edge of the inner panel body 110 in the rear tailgate inner panel 11; the hinge mounting plate 15 is located between the rear tailgate outer panel 12 and the inner panel body 110, and is fitted and connected to the hinge mounting area in the inner panel body 110; the latch mounting plate 16 is located between the rear tailgate outer panel 12 and the inner panel body 110, and is fitted and connected to the latch mounting area in the inner panel body 110. The hinge mounting plate 15 is used to reinforce the hinge mounting area of ​​the inner panel body 110, and the latch mounting plate 16 is used to reinforce the latch mounting area of ​​the inner panel body 110.

[0070] In this embodiment, the rear tailgate outer panel 12 is a thermosetting composite material component. While meeting performance and service life requirements, this further reduces the weight of the rear tailgate assembly and increases the versatility of the rear tailgate assembly's appearance (i.e., the outer surface of the rear tailgate outer panel 12). The rear tailgate outer panel 12 can be made of materials such as sheet molding compound (SMC), polypropylene (PP), polyphenylene sulfide (PPS), or acrylonitrile-butadiene-styrene copolymer (ABS), and is not limited to any single material.

[0071] In this embodiment, the hinge mounting plate 15 and the latch mounting plate 16 are made of conventional steel, aluminum alloy, or other materials to meet the reinforcement requirements for the installation of the hinge 13 and the latch 14. Furthermore, during assembly, the hinge mounting plate 15 and the latch mounting plate 16 are first glued to the corresponding positions of the inner panel body 110, and then connected and locked to the hinge 13 and the latch 14 respectively using threaded fasteners, thereby achieving reinforcement of the corresponding areas.

[0072] Compared with the prior art, the rear tailgate structure assembly provided in this embodiment adopts the aforementioned rear tailgate inner panel 11, with hinge mounting plate 15 and latch mounting plate 16 respectively set in the hinge mounting area and latch mounting area. There is no need to set reinforcing support components at the opening position, which effectively reduces the number of components between the rear tailgate inner panel 11 and the rear tailgate outer panel 12. This not only reduces the overall R&D and manufacturing cost of the rear tailgate assembly and improves the overall assembly accuracy of the rear tailgate assembly, but also meets the lightweight design requirements of the rear tailgate assembly.

[0073] In some embodiments, see Figure 4 and Figure 5 In the hinge mounting plate 15, the outer side of the corner area is attached to the outer panel 12 of the rear tailgate (e.g., glued). The corner area is the area of ​​the hinge mounting plate 15 near the corner of the inner panel body 110. In the latch mounting plate 16, the outer side of the left part and the outer side of the right part are attached to the outer panel 12 of the rear tailgate (e.g., glued).

[0074] In this embodiment, two hinge mounting plates 15 are symmetrically arranged on the inner panel body 110. Therefore, the corner areas of the two hinge mounting plates 15 are also symmetrical. By bonding this area to the outer panel 12 of the rear tailgate, the problem of the corners of the hinge mounting plates 15 lifting can be effectively avoided, and the rigidity of the corner area of ​​the rear tailgate assembly can also be improved.

[0075] In this embodiment, the latch mounting plate 16 generally corresponds to the lower part of the camera mounting area on the outer panel 12 of the rear tailgate. The latch mounting plate 16 effectively supports the lower part of the camera mounting area, and the positioning reinforcing rib 160 is used to support the upper part of the camera mounting area. This achieves effective support for the entire camera mounting area, ensuring the rigidity performance requirements of the area and effectively preventing the problem of dent deformation.

[0076] For specific implementation, please refer to Figure 4 and Figure 5 In order to achieve a close connection between the corner area and the outer panel 12 of the rear tailgate, the corner area of ​​the hinge mounting plate 15 is provided with a hinge support boss 1510, and the outer surface of the hinge support boss 1510 is close to the outer panel 12 of the rear tailgate.

[0077] Optionally, to increase the coverage area of ​​the hinge mounting plate 15, the hinge mounting plate 15 extends along the long axis of the inner reinforcing rib 130 to form an inverted "L"-shaped structure, corresponding to the corner area of ​​the inner reinforcing rib 130 and the outer reinforcing rib 120. The two side edges of the hinge mounting plate 15 are respectively fitted and connected to the inner reinforcing rib 130 and the outer reinforcing rib 120. The corner area of ​​the hinge mounting plate 15 extends to the inner ring of the stepped portion 200 at the edge of the inner plate body 110.

[0078] Optionally, the hinge mounting plate 15 has an inwardly arched cross-section, with the arched position corresponding to the space between the inner reinforcing rib 130 and the outer reinforcing rib 120. The two sides of the arched area are respectively fitted and connected to the inner reinforcing rib 130 and the outer reinforcing rib 120. The arched areas of the hinge 13, the inner plate body 110, and the hinge mounting plate 15 overlap and are connected by the same set of threaded fasteners. The hinge mounting plate 15 itself has a "U"-shaped cross-sectional structure, exhibiting strong load-bearing capacity in both inward and outward directions, as well as good bending and torsional resistance, which helps to improve the reinforcement effect on the hinge mounting area.

[0079] For specific implementation, please refer to Figure 4 and Figure 5In order to realize the fit connection of the lock mounting plate 16 and the rear door outer plate 12, the left side and the right side of the lock mounting plate 16 are respectively provided with outwardly protruding lock support bosses 1610, and the lock support bosses 1610 on the two sides are symmetrically arranged, and the lock support bosses 1610 are fit connected (for example, glued and bonded) with the rear door outer plate 12.

[0080] In some embodiments, referring to Figures 1 to 6 In order to limit the position of the rear door after being closed, the rear door assembly also has two groups of limiting blocks 17, which are respectively arranged on the left and right sides of the lower inner side of the inner plate body 110. Specifically, in order to realize the installation of the limiting blocks 17, the left and right sides of the lower part of the inner plate body 110 are respectively provided with inwardly protruding limiting installation bosses 180, and the inner side of the limiting installation boss 180 is the limiting installation surface 181, and the limiting block 17 is fit connected with the limiting installation surface 181 through a fastener (for example, a threaded fastener). More specifically, the limiting installation boss 180 is located on the outer circle of the bottom of the outer circle reinforcing rib 120, and is arranged adjacent to the outer circle reinforcing rib 120. When the door is closed, the collision force generated between the vehicle body and the limiting block 17 can be quickly transmitted to other positions of the inner plate body 110 through the outer circle reinforcing rib 120, avoiding the problem of local stress concentration in the area where the limiting block 17 is installed, and improving the structural rigidity and stability of the lower part of the rear door outer plate 12. In addition, the design of setting the limiting installation boss 180 and forming the limiting installation surface 181 forms the installation surface for the limiting block 17 on the inner plate body 110, which is beneficial to improve the installation and cooperation precision of the inner plate body 110 and the limiting block 17.

[0081] In some embodiments, referring to Figures 1 to 6 In order to realize the installation of the limiting blocks 17, the left and right sides of the lower part of the inner plate body 110 are respectively provided with inwardly protruding limiting installation bosses 180, and the inner side of the limiting installation boss 180 is the limiting installation surface 181, and the limiting block 17 is fit connected with the limiting installation surface 181 through a fastener (for example, a threaded fastener). More specifically, the limiting installation boss 180 is located on the outer circle of the bottom of the outer circle reinforcing rib 120, and is arranged adjacent to the outer circle reinforcing rib 120. When the door is closed, the collision force generated between the vehicle body and the limiting block 17 can be quickly transmitted to other positions of the inner plate body 110 through the outer circle reinforcing rib 120, avoiding the problem of local stress concentration in the area where the limiting block 17 is installed, and improving the structural rigidity and stability of the lower part of the rear door outer plate 12. In addition, the design of setting the limiting installation boss 180 and forming the limiting installation surface 181 forms the installation surface for the limiting block 17 on the inner plate body 110, which is beneficial to improve the installation and cooperation precision of the inner plate body 110 and the limiting block 17.

[0082] In some embodiments, referring to Figures 1 to 4 , Figures 6 to 8 , in order to ensure the sealing of the trunk after the tailgate is closed, the tailgate assembly is also provided with a sealing strip 19 arranged on the inner side of the inner plate body 110 and extending along the circumference of the inner plate body 110. Specifically, in order to realize the installation of the sealing strip 19, the outer circumferential wall of the outer ring reinforcing rib 120 forms a sealing installation surface 121 adjacent to the stepped portion 200, and the sealing strip 19 is connected to the sealing installation surface 121 by bonding, buckle connection or the like. The present embodiment makes full use of the structure of the outer ring reinforcing rib 120 to realize the installation of the sealing strip 19, has good compactness, and has high structural strength in this area, so that the inner plate body 110 can better withstand the force generated by the sealing strip 19 after being pressed, further prolonging the service life of the tailgate assembly. In addition, the installation surface formed on the inner plate body 110 for the sealing strip 19 also helps to improve the installation and cooperation precision of the inner plate body 110 and the sealing strip 19.

[0083] In some embodiments, referring to Figures 1 to 6 , in order to realize the installation and reinforcement of the hinge 13, the inner plate body 110 is provided with a hinge installation boss 170 located between the inner ring reinforcing rib 130 and the outer ring reinforcing rib 120, and the inner side of the hinge installation boss 170 is a hinge installation surface 171, and the hinge 13 is connected to the hinge installation surface 171 by a threaded fastener.

[0084] Based on the same inventive concept, the present application also provides a vehicle comprising the above-mentioned tailgate structure assembly.

[0085] Compared with the prior art, the vehicle provided by the present application has the advantages that by adopting the above-mentioned tailgate structure assembly, the overall development and manufacturing cost of the tailgate assembly is reduced, the overall assembly precision of the tailgate assembly is improved, the use reliability of the tailgate is improved, and the delicacy of the vehicle is improved; by reducing the overall weight of the tailgate assembly, the weight of the vehicle is further reduced, the energy consumption of the vehicle is optimized, and the market competitiveness of the vehicle is improved.

[0086] The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tailgate inner panel characterized by, The inner plate body (110) is connected with the rear door outer plate (12) at the edge thereof; The outer ring reinforcing rib (120) is adjacent to the edge of the inner plate body (110), and the inner ring reinforcing rib (130) is arranged in the inner ring of the outer ring reinforcing rib (120). The inner plate body (110) is further provided with a lock installation area and two hinge installation areas, the hinge installation area is located between the outer ring reinforcing rib (120) and the inner ring reinforcing rib (130), and the lock installation area is located at the bottom of the outer ring reinforcing rib (120) and the inner ring reinforcing rib (130).

2. The tailgate inner panel of claim 1, wherein, A plurality of inner ring reinforcing ribs (131) are arranged in the cavity of the inner ring reinforcing rib (130), the inner ring reinforcing ribs (131) are distributed along the length direction of the inner ring reinforcing rib (130), and each inner ring reinforcing rib (131) is respectively supported and connected to the two side wall plates of the inner ring reinforcing rib (130) along the width direction of the inner ring reinforcing rib (130).

3. The tailgate inner panel of claim 1, wherein, The inner plate body (110) is further provided with an auxiliary reinforcing rib (150), the auxiliary reinforcing rib (150) is located in the inner ring of the inner ring reinforcing rib (130) and is connected with the inner ring reinforcing rib (130), and the outer convex surface of the auxiliary reinforcing rib (150) is connected with the rear door inner plate.

4. The tailgate inner panel of claim 3, wherein, A plurality of transverse auxiliary reinforcing ribs (151) are arranged in the cavity of the auxiliary reinforcing rib (150), the transverse auxiliary reinforcing ribs (151) are distributed along the length direction of the auxiliary reinforcing rib (150), and each transverse auxiliary reinforcing rib (151) is respectively supported and connected to the two side wall plates of the auxiliary reinforcing rib (150) along the width direction of the auxiliary reinforcing rib (150).

5. The tailgate inner panel of claim 1, wherein, The inner plate body (110) is further provided with two groups of positioning reinforcing ribs (160), the positioning reinforcing ribs (160) are located in the inner ring of the inner ring reinforcing rib (130), the two groups of positioning reinforcing ribs (160) are symmetrically arranged on the left and right sides of the inner plate body (110), and the outer convex surface of the positioning reinforcing rib (160) is connected with the rear door inner plate.

6. The tailgate inner panel of claim 5, wherein, The inner plate body (110) is further provided with an auxiliary reinforcing rib (150), the auxiliary reinforcing rib (150) is located in the inner ring of the inner ring reinforcing rib (130) and corresponds to the middle position of the top of the inner ring reinforcing rib (130), the auxiliary reinforcing rib (150) is connected with the inner ring reinforcing rib (130), and the outer convex surface thereof is connected with the rear door inner plate, the auxiliary reinforcing rib (150) and the two groups of positioning reinforcing ribs (160) are triangularly distributed.

7. The tailgate inner panel of claim 1, wherein, The inner plate body (110) is a thermosetting composite material member.

8. A tailgate structure assembly, characterized by, The rear door inner plate, the rear door outer plate (12), the hinge installation plate (15), the lock installation plate (16), and the rear door inner plate according to any one of claims 1-7 are provided. The inner side of the tail gate outer panel (12) is connected with the edge of the inner panel body (110) in the tail gate inner panel; The hinge mounting plate (15) is located between the tail gate outer panel (12) and the inner panel body (110) and is connected with the hinge mounting area in the inner panel body (110); The lock catch mounting plate (16) is located between the tail gate outer panel (12) and the inner panel body (110) and is connected with the lock catch mounting area in the inner panel body (110).

9. The tailgate structure assembly of claim 8, wherein, In the hinge mounting plate (15), the outer side of the corner area is connected with the tail gate outer panel (12), and the corner area is the area near the corner of the inner panel body (110) in the hinge mounting plate (15); In the lock catch mounting plate (16), the outer side of the left part and the outer side of the right part are respectively connected with the tail gate outer panel (12).

10. A vehicle characterized by comprising: The tail gate structure assembly as claimed in claim 8 or 9.

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