A back door frame for a back door and a door lock assembly, a back door assembly having the same

Abstract

The utility model relates to a door field, and specifically is a back door frame for back door and door lock assembly, back door assembly with the back door frame, including crossbeam frame, one end of crossbeam frame is equipped with lock body installation support, the other end is equipped with hinged joint installation support, the back door frame both ends are connected with the inner door panel in back door through lock body installation support and hinged joint installation support respectively, the utility model discloses the back door frame is installed in the inner door panel inboard, greatly increased the structural strength of back door, the utility model discloses the cooperation of crossbeam frame, lock body installation support and hinged joint installation support, through the setting of crossbeam frame, can realize the mutual calibration of lock body installation support and hinged joint installation support when installing each other, better guarantee the accuracy and stability of lock body installation support and hinged joint installation support installation position.

Description

Technical Field

[0001] This utility model relates to the field of vehicle doors, specifically a tailgate frame for a tailgate and a door lock assembly having the tailgate frame, and a tailgate assembly. Background Technology

[0002] As the automotive consumer market continues to upgrade, consumers are placing higher demands on the overall appearance quality, sealing performance, collision safety, and manufacturing pace of vehicles.

[0003] As an important opening and closing component at the rear of the vehicle, the tailgate's structural design must not only meet the requirements of appearance styling, but also take into account various performance indicators such as rigidity and strength, sealing durability, assembly precision, and manufacturing cost.

[0004] Traditional tailgates typically use an "inner and outer panel + individual components" approach, where functional components such as the lock body, hinges, buffer blocks, and sealing strips are installed separately onto the inner door panel. This approach has the following main problems: Insufficient structural stiffness; In traditional designs, the lock body and hinges are directly fixed to the inner door panel, lacking an overall reinforcing frame. This results in low local rigidity in the door lock area, making it prone to significant deformation when closing the door, which affects the lifespan of the sealing strip and the overall vehicle sealing performance.

[0005] Poor positioning accuracy; The lock body and hinges are installed independently, lacking a unified standard, which can easily lead to problems such as misalignment of the latch and bolt, and misalignment of the hinge axis, resulting in excessive closing force, abnormal noise, or even lock failure.

[0006] Weak impact resistance; In a rear-end collision, the tailgate lock area and hinge area are the key force transmission paths. Traditional structures, lacking a closed-loop reinforcing frame, are prone to local crushing, affecting the overall vehicle crash rating.

[0007] Existing patent CN220809092U discloses a tailgate frame and vehicle; this patent ensures the structural strength of the tailgate frame by using the cooperation of the tailgate outer panel, outer panel support plate, reinforcing plate and tailgate inner panel, but the lock body unit disclosed therein is connected to the lock reinforcing plate as a single component; the interrelationship between the components during installation is low and relative calibration limit cannot be achieved.

[0008] Therefore, in order to improve or solve at least one of the above-mentioned technical problems, an auxiliary device is needed to realize the installation of the lock body unit on the rear door. Utility Model Content

[0009] The purpose of this invention is to provide a rear door frame structure that can increase the structural strength of the rear door and facilitate the installation of the lock unit.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A tailgate frame includes a crossbeam frame; one end of the crossbeam frame is provided with a lock body mounting bracket; the other end is provided with a hinge mounting bracket. The two ends of the rear door frame are connected to the inner door panel in the rear door through lock body mounting brackets and hinge mounting brackets, respectively.

[0011] The beam frame includes two spaced-apart frame tubes; each frame tube is attached at both ends to a lock body mounting bracket and a hinge mounting bracket, respectively.

[0012] The lock body mounting bracket includes a first connecting plate bracket and a first lateral bracket; the first connecting bracket has a first lateral bracket at the end away from the crossbeam frame, and the first lateral bracket and the first connecting bracket form a mounting groove.

[0013] The lock body mounting bracket also includes two spaced-apart assembly brackets, each of which is connected at one end to the first connecting plate bracket and at the other end to the first lateral bracket; the lock body unit, the assembly bracket, and the first lateral bracket are connected by fasteners.

[0014] The first connecting plate bracket includes a base connecting plate, and the lock body mounting bracket is connected to the crossbeam frame through the base connecting plate; the end of the base connecting plate away from the first lateral bracket is provided with a bridging connecting plate, and the bridging connecting plate is provided with a connector mounting groove.

[0015] The base connecting plate is provided with an overlap clearance groove.

[0016] The hinge mounting bracket includes a hinge base plate, and a hinge connecting plate is connected to one side of the hinge base plate; the hinge base plate and the hinge connecting plate are arranged intersectingly.

[0017] The hinge plate has an overlapping connecting plate at one end away from the hinge base plate; the hinge base plate is arranged in the assembly cavity; the overlapping connecting plate overlaps at the edge of the assembly cavity.

[0018] The hinge base plate is a stepped plate, and the hinge base plate is connected to the inner door panel by sealant at the joint.

[0019] A door lock assembly includes the back door frame, on which a lock body unit is provided.

[0020] The advantages of this utility model are: This utility model discloses a rear door frame for a rear door, a door lock assembly having the rear door frame, and a rear door assembly.

[0021] The rear door frame disclosed in this utility model is installed on the inner side of the inner door panel, which greatly increases the structural strength of the rear door.

[0022] This utility model utilizes a crossbeam frame, a lock body mounting bracket, and a hinge mounting bracket in combination. The crossbeam frame allows for mutual calibration of the lock body mounting bracket and the hinge mounting bracket during installation, thus better ensuring the accuracy and stability of their installation positions.

[0023] Meanwhile, the design of the rear door frame not only facilitates the installation of the lock unit inside the rear door, but also significantly increases the structural strength and rigidity of the rear door, thus optimizing its anti-collision performance. Attached Figure Description

[0024] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings: Figure 1 This is a first-view structural schematic diagram of the rear door frame in this utility model.

[0025] Figure 2 This is a first-view structural schematic diagram of the rear door frame in this utility model.

[0026] Figure 3 This is a schematic diagram of the structure when the back door frame and the lock body unit are connected in this utility model.

[0027] Figure 4 This is a first-view structural schematic diagram of the lock body mounting bracket in this utility model.

[0028] Figure 5 This is a second-view structural schematic diagram of the lock body mounting bracket in this utility model.

[0029] Figure 6 This is a third-view structural diagram of the lock body mounting bracket in this utility model.

[0030] Figure 7 This is a first-view structural schematic diagram of the hinge mounting bracket in this utility model.

[0031] Figure 8 This is a second-view structural schematic diagram of the hinge mounting bracket in this utility model.

[0032] Figure 9 This is a first-view structural diagram of the back door frame of this utility model when it is installed on the door panel body.

[0033] Figure 10 This is a schematic diagram of the back door frame of this utility model when it is installed on the door panel body from a second perspective.

[0034] Figure 11 This is a schematic diagram of the structure when the back door frame and the outer door panel of this utility model are connected.

[0035] Figure 12 This is a first-view structural diagram of the rear door frame of this utility model when it is installed on the inner door panel.

[0036] Figure 13 This is a structural schematic diagram from a second perspective when the back door frame of this utility model is installed on the inner door panel.

[0037] Figure 14 for Figure 13 A magnified view of a portion of the image.

[0038] Figure 15 This is a schematic diagram of the structure of the inner door panel of this utility model.

[0039] Figure 16 for Figure 15 A magnified view of a portion of the image.

[0040] The markings in the above figures are all: 1-1. Back door frame; 1. Crossbeam frame; 2. Lock body mounting bracket; 3. Hinge mounting bracket; 4. Inner door panel; 5. Lock body unit. Detailed Implementation

[0041] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0042] A tailgate frame includes a crossbeam frame; one end of the crossbeam frame is provided with a lock body mounting bracket; the other end is provided with a hinge mounting bracket; both ends of the tailgate frame are connected to the inner door panel of the tailgate through the lock body mounting bracket and the hinge mounting bracket, respectively; the tailgate frame disclosed in this utility model is installed on the inner side of the inner door panel, which greatly increases the structural strength of the tailgate.

[0043] This utility model utilizes a crossbeam frame, a lock body mounting bracket, and a hinge mounting bracket in combination. The crossbeam frame allows for mutual calibration of the lock body mounting bracket and the hinge mounting bracket during installation, thus better ensuring the accuracy and stability of their installation positions.

[0044] Meanwhile, the design of the rear door frame not only facilitates the installation of the lock unit inside the rear door, but also significantly increases the structural strength and rigidity of the rear door, thus optimizing its anti-collision performance.

[0045] Specifically, this utility model discloses a tailgate frame for a rear tailgate; the tailgate is arranged at the rear of the vehicle; and serves as a trunk door.

[0046] The door lock assembly disclosed in this utility model mainly includes the rear door frame, on which a lock body unit is provided; the door lock assembly is a locking component, mainly used to cooperate with the latch or lock pin on the vehicle body to lock the rear door.

[0047] In addition, the inner door panel 4 in this utility model is provided with an assembly cavity; the door lock assembly is arranged in the assembly cavity of the door panel body; the assembly cavity is essentially a recessed structure, which facilitates the installation of the door lock assembly on the inner door panel 4.

[0048] The door lock assembly described in this utility model includes a back door frame 1-1 connected to the inner door panel 4, and a lock body unit 5 is provided on the back door frame 1-1. In this utility model, the basic function of the back door frame 1-1 is to act as a connector, which facilitates the installation and fixation of the lock body unit 5 on the inner door panel 4. Another function is to act as a mounting bracket, mainly to ensure the structural strength of the back door frame for the rear door.

[0049] In this utility model, the back door frame 1-1 includes a crossbeam frame 1; one end of the crossbeam frame 1 is provided with a lock body mounting bracket 2; the other end is provided with a hinge mounting bracket 3; the crossbeam frame 1 mainly includes two parallel "frame tubes 11", the cross section of which can be rectangular, circular or D-shaped high-strength steel / aluminum profile; the two ends of the crossbeam frame 1 are respectively overlapped (welded or riveted) on the lock body mounting bracket 2 and the hinge mounting bracket 3 to form a closed "U" shaped frame.

[0050] The closed-loop structure significantly improves the local torsional stiffness of the door lock area, reducing door deformation and wear on the sealing strip.

[0051] The lock body mounting bracket 2 is mainly connected to one end of the crossbeam frame 1 and is subsequently used to connect the lock body unit 5; it facilitates the installation and fixation of the lock body unit 5, while ensuring the structural strength and installation stability of the lock body unit 5.

[0052] The hinge mounting bracket 3 of this utility model is mainly a plate structure, which is connected to the inner plate. It can increase the structural strength of the door panel to a certain extent, and at the same time ensure the stability of the rear door hinge installation.

[0053] In this utility model, the hinge mounting bracket 3 can be made of high-strength steel or aluminum plate by stamping.

[0054] During subsequent installation and connection, the tailgate frame 1-1 is connected to the inner door panel 4 via the lock body mounting bracket 2 and the hinge mounting bracket 3. The connection method can be through fasteners, which can be bolts or screws, or snap-fit ​​fasteners; the specific method can be selected according to the needs. In this utility model, the lock body mounting bracket 2 and the hinge mounting bracket 3 serve as connecting parts and reinforcing parts, which not only ensure the structural strength of the tailgate but also facilitate the installation and connection of the lock body unit 5 and the subsequent door hinges.

[0055] Furthermore, in this utility model, the beam frame 1 includes two spaced-apart frame tubes 11; each frame tube 11 has its two ends respectively attached to the lock body mounting bracket 2 and the hinge mounting bracket 3; the arrangement of the two frame tubes 11 helps to ensure the stability of the connection between the lock body mounting bracket 2 and the hinge mounting bracket 3, and avoids the swaying of the lock body mounting bracket 2 and the hinge mounting bracket 3 relative to a single frame tube 11.

[0056] Meanwhile, the two frame horizontal tubes 11 of this utility model are distributed at both ends of the lock body mounting bracket 2 and the hinge mounting bracket 3, so that the two frame horizontal tubes 11, the lock body mounting bracket 2 and the hinge mounting bracket 3 form a U-shaped frame; when subsequently installed on the inner door panel 4, it can well ensure the structural strength of the back door frame for the back door.

[0057] Furthermore, the lock body mounting bracket 2 in this utility model includes a first connecting plate bracket 21 and a first lateral bracket 22; the first connecting bracket has a first lateral bracket 22 at the end away from the crossbeam frame 1, and the first lateral bracket 22 and the first connecting bracket form a mounting groove 213; the first connecting plate bracket 21 and the first lateral bracket 22 in this utility model can be integrally formed or can be designed separately. In this utility model, because the first lateral bracket 22 and the first connecting bracket are both stepped plate structures, integral forming is difficult. Therefore, the first connecting plate bracket 21 and the first lateral bracket 22 in this utility model adopt a separate design; the two can be connected by one or two connection methods such as riveting and welding.

[0058] In this utility model, the first connecting plate bracket 21 serves as a basic connecting component, which facilitates the installation and arrangement of subsequent brackets and is also the basis for the lock body mounting bracket 2 and the back door frame 1-1; the lock body mounting bracket 2 and the back door frame 1-1 can be connected by welding or riveting.

[0059] In this utility model, the first lateral bracket 22 is arranged on one side of the first connecting plate bracket 21. The first lateral bracket 22 and the first connecting plate bracket 21 are generally perpendicular to each other or intersecting each other, that is, there is a certain angle between them. During subsequent installation and connection, the first lateral bracket 22 acts as a connecting frame, which facilitates the installation and connection of the lock body unit 5 on the lock body mounting bracket 2.

[0060] The first lateral bracket 22 and the first connecting plate bracket 21 together form an "installation groove 213", which is a "box-shaped cavity" structure. The installation groove 213 can be used to arrange the lock body unit 5.

[0061] In this utility model, bolt holes are opened on the first lateral bracket 22; these are subsequently used to fix and connect the lock body unit 5.

[0062] Furthermore, the lock body mounting bracket 2 described in this utility model also includes two spaced-apart assembly brackets 23. The assembly brackets 23 serve two purposes: to facilitate the installation and arrangement of the lock body unit 5 and to increase the structural strength of the lock body mounting bracket 2.

[0063] In this utility model, one end of each assembly bracket 23 is connected to the first connecting plate bracket 21, and the other end is connected to the first lateral bracket 22; based on this design, the assembly bracket 23 is arranged at an angle and acts as a reinforcing beam structure.

[0064] In this utility model, the assembly bracket 23 includes a support bracket 231, and support end plates 232 are respectively provided at both ends of the support bracket 231. One end of the support bracket 231 is connected to the first connecting plate bracket 21 through a support end plate 232, and the other end is connected to the first lateral bracket 22 through a support end plate 232. The lock body unit 5, the assembly bracket 23, and the first lateral bracket 22 are subsequently connected by fasteners. This allows the connection of the three components to be achieved with the same fastener, reducing the number of fasteners used.

[0065] When the lock body unit 5, the mounting bracket 23 and the first lateral bracket 22 are connected, the bracket on the lock body unit 5, the support end plate 232 of the mounting bracket 23 and the inner wall of the first lateral bracket 22 are arranged and fitted in sequence, thereby realizing the connection between the above three components by fasteners.

[0066] Furthermore, in this utility model, the first connecting plate bracket 21 includes a base connecting plate 211, and the lock body mounting bracket 2 is connected to the crossbeam frame 1 through the base connecting plate 211; a bridging connecting plate 212 is provided at the end of the base connecting plate 211 away from the first lateral bracket 22, and a connector hanging groove 215 is provided on the bridging connecting plate 212; the base connection disclosed in this utility model mainly acts as a connecting plate, and the base connecting plate 211 is connected to the crossbeam frame 1; while a bridging connecting plate 212 is connected to one side of the base connecting plate 211. One function of the bridging connecting plate 212 is to ensure the structural strength of the first connecting plate bracket 21, and another function is to act as a hanging limiter, mainly by setting the connector hanging groove 215 to facilitate the installation and connection of the connector in the rear lock body unit 5; and to facilitate the arrangement of the connector on the lock body unit 5.

[0067] Furthermore, the basic connecting plate 211 described in this utility model is provided with an overlap avoidance groove 214; the overlap avoidance groove 214 plays a good avoidance role, so that the basic connecting plate 211 can avoid the protrusion on the outer door panel 6 during subsequent installation and connection.

[0068] Furthermore, in this utility model, the hinge mounting bracket 3 includes a hinge base plate 31, and a hinge connecting plate 32 is connected to one side of the hinge base plate 31; the hinge base plate 31 and the hinge connecting plate 32 are arranged intersectingly; the hinge base plate 31 and the hinge connecting plate 32 of this utility model are generally L-shaped structures, the hinge base plate 31 is a base plate structure, connected to the bottom of the mounting groove of the inner door panel 4; while the hinge connecting plate 32 is connected to one side of the hinge base plate 31, and in subsequent use, the hinge connecting plate 32 fits against the inner sidewall of the mounting groove; it plays a good lateral limiting role and prevents the door lock assembly from moving on the inner door panel 4.

[0069] Furthermore, in this utility model, the hinge connecting plate 32 is provided with an overlapping connecting plate 33 at the end away from the hinge base plate 31; the hinge base plate 31 is arranged in the assembly cavity; the overlapping connecting plate 33 overlaps at the edge of the assembly cavity; the overlapping connecting plate 33 and the hinge base plate 31 are located on both sides of the hinge connecting plate 32, and the vertical cross-section of the three forms a Z-shape; this arrangement allows the overlapping connecting plate 33 to act as a hanging plate, and at the same time, an overlapping groove is provided on the inner door panel 4, and the overlapping connecting plate 33 overlaps in the overlapping groove. The overlapping connecting plate 33 is connected to the overlapping groove by sealant. This arrangement allows the overlapping connecting plate 33 to play a good role in installation positioning and limiting; better ensuring the accuracy and stability of the installation position of the hinge mounting bracket 3.

[0070] Furthermore, in this utility model, the hinge base plate 31 is a stepped plate, and the hinge base plate 31 and the inner door panel 4 are connected by sealant at the contact point. The hinge base plate 31 is designed as a stepped plate. This design can achieve the connection between the hinge base plate 31 and the inner door panel 4 by fasteners, and also achieve the bonding between the two, which well ensures the stability and accuracy of the connection between the hinge mounting bracket 3 and the inner door panel 4.

[0071] A rear door assembly includes a door panel body with a door lock assembly mounted thereon. The door panel body includes an inner door panel 4 and an outer door panel 6. The inner door panel 4 is connected to the outer door panel 6. The inner door panel 4 has an assembly cavity 42. The door lock assembly is arranged in the assembly cavity 42 of the door panel body. The door lock assembly includes a rear door frame 1-1 connected to the inner door panel 4, and a lock body unit 5 is mounted on the rear door frame 1-1. This utility model facilitates the modular design of the rear door assembly through the modular design of the door lock assembly and the door panel body, making subsequent installation and assembly easier.

[0072] Meanwhile, the design of the rear door frame 1-1 not only facilitates the installation of the lock body unit 5 inside the rear door, but also significantly increases the structural strength and rigidity of the rear door, thus optimizing its anti-collision performance.

[0073] Specifically, this utility model discloses a tailgate assembly; the tailgate assembly is mainly arranged at the rear of the vehicle; and serves as the trunk door.

[0074] In this utility model, the tailgate assembly mainly includes a door panel body, which is the main structure of the tailgate assembly and provides an installation base for the other components. The door panel body is provided with a door lock assembly. The door lock assembly is a locking component, mainly used to cooperate with the latch on the vehicle body to lock the tailgate.

[0075] In addition, the door panel body described in this utility model includes an inner door panel 4 and an outer door panel 6; the inner door panel 4 is connected to the outer door panel 6; the connection between the inner door panel 4 and the outer door panel 6 can be varied, and generally adhesive bonding or welding is used.

[0076] In this utility model, the outer door panel 6 is usually stamped with steel or aluminum plate, and the inner panel is mostly made of steel, aluminum or plastic / composite material; the door panel body disclosed in this utility model provides a rigid shell for the entire rear door; at the same time, a closed section is formed between the inner door panel 4 and the outer door panel 6 to improve torsional stiffness.

[0077] The inner door panel 4 is generally selected by stamping or injection molding, with a recessed center forming an "assembly cavity 42"; the cavity wall has integrated features such as flanges, bosses, positioning pins 71, and support columns 72; providing an installation reference for functional components such as door locks, hinges, wiring harnesses, and sealing strips.

[0078] The 42 lock bodies are completely "hidden" inside the assembly cavity to avoid interference with the outer panel, while also facilitating the placement of the door lock assembly "from top to bottom" on the assembly line.

[0079] The inner door panel 4 forms a closed box-shaped cross section with the outer panel through welding points / adhesive / edge binding, which improves the overall rigidity.

[0080] The outer door panel 6 mainly serves as an exterior trim component.

[0081] In addition, the inner door panel 4 in this utility model is provided with an assembly cavity 42; the door lock assembly is arranged in the assembly cavity 42 of the door panel body; the assembly cavity 42 is essentially a recessed structure, which facilitates the installation of the door lock assembly on the inner door panel 4.

[0082] The door lock assembly described in this utility model includes a back door frame 1-1 connected to the inner door panel 4, and a lock body unit 5 is provided on the back door frame 1-1. In this utility model, the basic function of the back door frame 1-1 is to act as a connector, which facilitates the installation and fixation of the lock body unit 5 on the inner door panel 4. Another function is to act as a mounting bracket, mainly to ensure the structural strength of the back door assembly.

[0083] Furthermore, in this utility model, the back door frame 1-1 is connected to the inner door panel 4 through the locking and positioning unit 7; the setting of the locking and positioning unit 7 in this utility model ensures the stability and accuracy of the connection between the back door frame 1-1 and the inner door panel 4.

[0084] In this invention, the locking and positioning unit 7 includes a support column 72 disposed on the inner door panel 4. The support column 72 is connected to the lock body mounting bracket 2 or the hinge mounting bracket 3 via fasteners. This invention achieves a fixed connection between the lock body mounting bracket 2 or the hinge mounting bracket 3 and the inner door panel 4 through the cooperation of the support column 72 and the fasteners. In use, one side of the lock body mounting bracket 2 or hinge mounting bracket 3 of this utility model is attached to the end face of the support column 72. Subsequently, fasteners pass through the lock body mounting bracket 2 or hinge mounting bracket 3 and connect to the support column 72. The connection method can be one of screw connection, riveting or snap-fit.

[0085] In this utility model, the locking positioning unit 7 further includes a positioning pin 71 disposed on the inner door panel 4; the positioning pin 71 can be inserted into the pin hole 73 on the lock body mounting bracket 2 or the hinge mounting bracket 3; by setting the positioning pin 71 on the inner door panel 4, and by using the positioning pin 71 in cooperation with the pin hole 73, this utility model realizes the position limitation of the lock body mounting bracket 2 or the hinge mounting bracket 3, thereby ensuring the accuracy of the installation position of the back door frame 1-1, and thus ensuring the accuracy of the installation position of the lock body unit 5.

[0086] Meanwhile, in this utility model, the support column 72 and the positioning pin 71 in each of the locking and positioning units 7 are integrated with the inner door panel 4; this arrangement can avoid the trouble of welding the positioning pin 71 or the support column 72 separately later.

[0087] Furthermore, in this utility model, the inner door panel 4 includes an inner panel body 41, on which a lock body connecting groove 44 is provided; the lock body connecting groove 44 is connected to the assembly inner cavity 42; the setting of the lock body connecting groove 44 facilitates partial exposure of the lock body unit 5, which is convenient for subsequent use with the latch or lock pin.

[0088] The inner panel body 41 of this utility model is the main structure of the inner door panel 4.

[0089] In this utility model, the inner plate body 41 includes an inner plate protrusion 411, and an inner plate frame 412 is provided at the edge of the inner plate protrusion 411. The inner plate frame 412 of this utility model is an edge plate, and the inner plate protrusion 411 is raised on the inner plate frame 412. This arrangement makes the inner plate protrusion 411 act as a reinforcing protrusion, which effectively ensures the structural strength of the inner plate body 41.

[0090] In actual use, the inner panel protrusion 411 can be used in conjunction with the crossbeam frame 1 to play a good role in installation and positioning.

[0091] In this utility model, the inner plate protrusion 411 and the inner plate frame 412 form an assembly cavity 42; the door lock assembly is sleeved on the inner plate protrusion 411; the door lock assembly is arranged in the assembly cavity 42; the assembly cavity 42 is essentially an annular cavity structure, mainly used to arrange the back door frame 1-1 structure.

[0092] Furthermore, in this utility model, the outer door panel 6 includes an outer panel body; the outer panel body is the main structure of the outer door panel 6, and the outer panel body includes an outer panel base; the outer panel base plate is the main structure of the outer panel body, and a support pad 61 is provided on the outer panel base; one function of the support pad 61 is to ensure the structural strength of the outer panel base, and another is to facilitate its use with the lock body mounting bracket 2. Specifically, in this utility model, the support pad 61 and the lock body mounting bracket 2 are arranged in an overlapping manner; subsequently, the support pad 61 is arranged in a protruding manner on the outer panel base, and an overlapping avoidance groove 214 is provided on the lock body mounting bracket 2; in this utility model, the support pad 61 can be equivalent to being partially inserted into the overlapping avoidance groove 214 to realize the mutual calibration and limiting of the outer door panel 6 and the lock body mounting bracket 2.

[0093] Preferably, in this utility model, the support pad 61 is provided with an overlapping groove; the setting of the overlapping groove makes the support pad 61 form a stepped platform, which plays a good role in calibration and limiting, and can be used for positioning and limiting the lock body mounting bracket 2 on the support pad 61.

[0094] Furthermore, in this utility model, the outer door panel 6 is pressed onto the hinge mounting bracket 3 and the inner door panel 4. Based on this design, the outer door panel 6 can be pressed onto both the hinge mounting bracket 3 and the inner door panel 4 simultaneously. Through the mutual pressing of the outer door panel 6 and the inner door panel 4, the hinge mounting bracket 3 can be fixed in a secondary manner, which better ensures the stability and accuracy of the arrangement of the hinge mounting bracket 3 and the door lock assembly in the assembly cavity 42.

[0095] Furthermore, the rear door assembly described in this utility model also includes a positioning unit; the positioning unit plays a good role in installation limitation, ensuring the accuracy of the installation position of the hinge mounting bracket 3 and the door lock assembly on the inner door panel 4.

[0096] In the present utility model, the positioning unit comprises a positioning protrusion 43 arranged on the inner door panel 4 and a positioning groove 34 arranged on the hinge mounting bracket 3; the hinge mounting bracket 3 is connected to the positioning protrusion 43 of the inner door panel 4 through the positioning groove 34; the positioning protrusion 43 is generally a protrusion arranged on the inner wall of the assembly cavity 42, and the positioning groove 34 is a sinking groove arranged on the side surface of the hinge mounting bracket 3. During subsequent installation and connection, the hinge mounting bracket 3 can be sleeved on the corresponding protrusion through the positioning groove 34, thereby realizing the accuracy and stability of the installation position of the hinge mounting bracket 3. Example

[0097] In the present utility model, the door panel body mainly comprises an outer door panel 6 and an inner door panel 4; the structural strength of the door panel body is ensured by the double-layer door panel structure. Generally, the outer door panel 6 is a stamped steel plate / aluminum plate; the door panel is stamped steel, aluminum or plastic / composite material; a closed section is formed between the outer door panel 6 and the inner door panel 4 by adhesive bonding / edge wrapping / spot welding.

[0098] The door panel body of the present utility model provides the appearance of the tail of the whole vehicle and provides an installation base for other functional components; meanwhile, there is an assembly cavity 42 between the outer door panel 6 and the inner door panel 4, forming a closed box structure; the closed box-shaped section significantly improves the torsional rigidity and reduces the resonance when the door is closed.

[0099] In the present utility model, the edge of the inner door panel 4 is concave downward to form an "assembly cavity 42"; a positioning boss is provided on the cavity wall; the positioning pin 71 and the support column 72 are arranged at the bottom of the assembly cavity 42; the lock body communicating groove 44 communicates with the assembly cavity 42; the door lock assembly is arranged in a hidden manner; which provides references for the lock body, the hinge, the wire harness and the sealing strip.

[0100] The outer door panel 6 is generally an exterior trim component, which ensures the aesthetic degree of the outer side of the door panel body.

[0101] The back door frame 1-1 mainly comprises two high-strength steel / aluminum frame transverse pipes 11, a lock body mounting bracket 2 and a hinge mounting bracket 3; the four components are connected to form a "square"-shaped closed ring; in the present utility model, the back door frame 1-1 pre-integrates the lock body, the hinge and the buffer block into a sub-assembly; forms a main force flow path; which can improve the rigidity of the door lock area; offline sub-assembly reduces the number of main line stations.

[0102] The crossbeam frame 1 mainly comprises two spaced and parallel frame transverse pipes 11; the cross section of the frame transverse pipe 11 is rectangular / circular / D-shaped; the end heads are respectively lapped with the lock body bracket and the hinge bracket.

[0103] The back door frame 1-1 is enabled to be a real "circumferential reinforcing beam", which reduces the deformation amount of the door lock area.

[0104] The lock body mounting bracket 2 includes a first connecting plate bracket 21, an assembly bracket 23, and a first lateral bracket 22; the first connecting plate bracket 21 and the first lateral bracket 22 form an installation groove 213; the assembly bracket 23 is supported by diagonal bracing on both sides; it has a connector hanging groove 215, an overlap clearance groove 214, and bolt holes.

[0105] Based on the above design, the lock body unit 5 can be accurately positioned and fixed, concentrating the stress point. This increases the rigidity of the lock body installation and reduces abnormal noise when closing the door; a single fastener simultaneously locks the lock body unit 5, the mounting bracket 23, and the first lateral bracket 22, reducing the amount of fasteners used.

[0106] The hinge mounting bracket 3 mainly includes a stepped hinge base plate 31, a hinge connecting plate 32, and an overlapping connecting plate 33; the positioning groove 34 cooperates with the inner panel positioning protrusion 43; and sealant is applied to the joint between the hinge base plate 31 and the inner door panel 4.

[0107] The locking and positioning unit 7 includes a support column 72 and a positioning pin 71 integrally formed with the inner door panel 4; the end face of the support column 72 fits against the bracket, and the positioning pin 71 is inserted into the bracket pin hole 73. This utility model can generally be equipped with multiple locking and positioning units 7, typically four. Generally, the hinge mounting bracket 3 and the lock body mounting bracket 2 are connected to the inner door panel 4 through two locking and positioning units 7 respectively. The locking and positioning unit 7 of this utility model does not require additional welding pin sleeves, reducing the number of processes and minimizing assembly errors.

[0108] The support pad 61 is set on the inner side of the outer door panel 6 and has an overlapping groove; it is inserted into the overlapping clearance groove 214 on the lock body mounting bracket 2; based on the above design, the positioning and force transmission between the outer door panel 6 and the lock body mounting bracket 2 are realized; fatigue cracks of the lock body bracket are reduced; and the outer door panel 6 and the assembly are self-positioned.

[0109] The assembly bracket 23 mainly includes a support inclined frame 231 and two end support plates 232; the support inclined frame 231 is inclined to connect the first connecting plate bracket 21 and the first lateral bracket 22, forming a triangular reinforcing beam; thus improving the overall rigidity of the lock body mounting bracket 2.

[0110] The bridging plate 212 is provided with a connector mounting groove 215; in this utility model, the bridging plate 212 extends outward from the base plate 211, and the plate has grooves or holes; the groove structure is mainly used to hang the lock body wiring harness plug; to prevent the plug from shaking; to ensure that the wiring harness of the lock body unit 5 is clearly routed, and to reduce abnormal noise and wear; the assembly worker can insert and connect with one hand, improving the assembly cycle.

[0111] The positioning unit includes a positioning protrusion 43 (boss) on the inner door panel 4 and a positioning groove 34 (countersunk hole / notch) on the hinge mounting bracket 3. The above design can realize the pre-positioning of the hinge bracket; prevent rotation and displacement; and realize the hinge mounting bracket 3 in one go, avoiding secondary adjustment; and achieve integrated positioning and sealing with sealant.

[0112] Based on the synergy of the aforementioned components, the rear door assembly disclosed in this utility model can achieve modular offline assembly, thereby reducing the main line cycle time.

[0113] Multi-point positioning combined with a closed frame can improve the rigidity of the door lock / hinge area.

[0114] Through the modular design of the back door frame 1-1, lock body mounting bracket 2, and hinge mounting bracket 3, high assembly precision and strong structural stability are achieved.

[0115] Multiple positioning and connection methods, such as locking positioning unit 7, positioning unit, support pad 61, and overlapping structure, are adopted to ensure assembly accuracy and structural strength.

[0116] The inner door panel 4 is provided with an inner cavity 42 and a lock body connecting groove 44. The door lock assembly is mounted on the inner panel protrusion 411, which optimizes space utilization and improves assembly efficiency.

[0117] The outer door panel features a 6-layer pressing structure and sealant connection, improving both appearance quality and sealing performance.

[0118] Obviously, the specific implementation of this utility model is not limited to the above-mentioned methods. Any non-substantial improvements made using the inventive concept and technical solution of this utility model are within the protection scope of this utility model.

Claims

1. A tailgate frame, characterized in that, Includes a crossbeam frame; one end of the crossbeam frame is provided with a lock body mounting bracket; the other end is provided with a hinge mounting bracket; The two ends of the rear door frame are connected to the inner door panel in the rear door through lock body mounting brackets and hinge mounting brackets, respectively.

2. A tailgate frame according to claim 1, characterized in that, The beam frame includes two spaced-apart frame tubes; each frame tube is attached at both ends to a lock body mounting bracket and a hinge mounting bracket, respectively.

3. A tailgate frame according to claim 1, characterized in that, The lock body mounting bracket includes a first connecting plate bracket and a first lateral bracket; the first connecting plate bracket has a first lateral bracket at the end away from the crossbeam frame, and the first lateral bracket and the first connecting plate bracket form a mounting groove.

4. A tailgate frame according to claim 3, characterized in that, The lock body mounting bracket also includes two spaced-apart assembly brackets, each of which is connected at one end to the first connecting plate bracket and at the other end to the first lateral bracket.

5. A tailgate frame according to claim 3, characterized in that, The first connecting plate bracket includes a base connecting plate, and the lock body mounting bracket is connected to the crossbeam frame through the base connecting plate; the end of the base connecting plate away from the first lateral bracket is provided with a bridging connecting plate, and the bridging connecting plate is provided with a connector mounting groove.

6. A tailgate frame according to claim 5, characterized in that, The base connecting plate is provided with an overlap clearance groove.

7. A tailgate frame according to claim 3, characterized in that, The hinge mounting bracket includes a hinge base plate, and a hinge connecting plate is connected to one side of the hinge base plate; the hinge base plate and the hinge connecting plate are arranged intersectingly; an overlapping connecting plate is provided at the end of the hinge connecting plate away from the hinge base plate; the hinge base plate is arranged in the assembly cavity; the overlapping connecting plate overlaps at the edge of the assembly cavity.

8. A tailgate frame according to claim 7, characterized in that, The hinge base plate is a stepped plate, and the hinge base plate is connected to the inner door panel by sealant at the joint.

9. A door lock assembly, characterized in that, Includes the tailgate frame as described in any one of claims 1-8, wherein the tailgate frame is provided with a lock body unit; the lock body unit is connected to the mounting bracket and the first lateral bracket in the tailgate frame by fasteners.

10. A tailgate assembly, characterized in that, It includes a door panel body, on which a door lock assembly as described in claim 9 is provided.

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