Mounting structure of rear penetrating tail lamp

Abstract

The utility model discloses an installation structure of a rear penetrating tail lamp, and relates to the technical field of automobile lamps, the installation structure of the rear penetrating tail lamp comprises a back door plate assembly, a lamp body, a buckle assembly and a fastening assembly, the back door plate assembly is provided with a boss, the lamp body is provided with a limiting groove, a first sliding groove and a second sliding groove, the groove wall of the limiting groove abuts against the boss, the buckle assembly is in sliding fit with the first sliding groove, and the fastening assembly is in sliding fit with the second sliding groove. According to the technical scheme, the boss and the limiting groove are adopted to achieve positioning of the lamp body in the left-right direction, internal stress generated by installation accuracy difference can be reduced through tiny relative displacement of the boss and the limiting groove in the up-down direction, and the clamping buckle assembly and the fastening assembly are adopted so that the lamp body can be firmly fixed when thermal expansion and cold contraction happen. The buckle assembly and the sliding groove bolt can generate tiny relative displacement relative to the lamp body in the left-right direction, so that the internal stress is greatly reduced, and the lamp body is prevented from cracking.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to an installation structure for a rear through-type taillight. Background Technology

[0002] With the rapid development of automotive lighting technology, continuous taillights have become a mainstream element in modern automotive design. At the same time, the rapid rise of the new energy electric vehicle market has driven the automotive industry's increasing demand for energy conservation and lightweighting. To respond to these demands, automakers have begun using resin materials as the primary structural material for tailgates to achieve the goals of reducing vehicle weight and improving energy efficiency. This shift not only helps improve the overall performance of the vehicle but also brings greater design flexibility, meeting market requirements for diverse appearances and environmental protection.

[0003] However, while lightweight materials are widely used, the traditional metal back door lamp mounting structure has failed to adapt to the characteristics of new resin materials in a timely manner, resulting in the lamp body being prone to cracking and difficult to assemble during actual application. Utility Model Content

[0004] The main purpose of this utility model is to propose a mounting structure for a rear through-type taillight, which aims to solve the problems of lamp body cracking and assembly difficulties.

[0005] To achieve the above objectives, this utility model proposes a mounting structure for a rear through-type taillight, the mounting structure of which includes:

[0006] A rear door panel assembly, wherein a boss is provided on the rear door panel assembly;

[0007] The lamp body is provided with a limiting groove, a first sliding groove and a second sliding groove. The groove wall of the limiting groove abuts against the boss to restrict the lamp body from moving relative to the back door panel assembly in a first direction, and the boss can move relative to the limiting groove in a second direction.

[0008] A latching assembly is connected to the rear door panel assembly, and the end of the latching assembly near the rear door panel assembly is inclined downward. The latching assembly slides with the first sliding groove so that the latching assembly can move relative to the lamp body in the first direction, and the groove wall of the first sliding groove can restrict the movement of the latching assembly relative to the lamp body in the second direction and the third direction.

[0009] A fastening assembly is provided, which is slidably engaged with the second slide groove so that the fastening assembly can move relative to the lamp body along the first direction. The fastening assembly is connected to the rear door panel assembly, and the end of the fastening assembly near the rear door panel assembly is inclined downward so that the fastening assembly can restrict the movement of the lamp body relative to the rear door panel assembly along the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0010] In one embodiment, the angle between the axis of the buckle assembly and the horizontal plane is defined as A, then: 3°≤A≤10°;

[0011] And / or,

[0012] If the angle between the axis of the fastening assembly and the horizontal plane is defined as B, then: 3°≤B≤10°.

[0013] In one embodiment, the snap-fit ​​assembly includes a snap-fit ​​and a first sealing component. The snap-fit ​​includes a body and a flange connected to each other. The body slides in conjunction with the first slide groove. The rear door panel assembly is provided with a first mounting hole through which the body passes. The outer wall of the body abuts against the groove wall of the first slide groove. The first sealing component is located between the rear door panel assembly and the flange. The two opposite sides of the first sealing component abut against the rear door panel assembly and the flange, respectively.

[0014] In one embodiment, the body includes a guide portion and a connecting portion connected to each other. The connecting portion is connected to the flange. One end of the connecting portion away from the guide portion is slidably engaged with the first slide groove. The outer wall of the connecting portion abuts against the groove wall of the first slide groove.

[0015] In one embodiment, the number of the snap fasteners is at least two, and the number of the first sealing components is the same as the number of the snap fasteners and they are arranged in a one-to-one correspondence. The at least two snap fasteners are a first snap fastener and a second snap fastener.

[0016] If we define C as the gap between the outer wall of the connecting part of the first buckle and the groove wall of the first slide, then: 0.1mm≤C≤0.2mm;

[0017] If we define the gap between the outer wall of the connecting part of the second buckle and the groove wall of the first slide as D, then we have: 0.5mm≤D≤1.5mm.

[0018] In one embodiment, the fastening assembly includes a sliding bolt, a second sealing component, and a fastener. The sliding bolt slides into the second sliding groove to allow it to move relative to the lamp body in the first direction. The rear door panel assembly has a second mounting hole through which the sliding bolt passes. The second sealing component is located between the rear door panel assembly and the lamp body. The two opposite sides of the second sealing component abut against the rear door panel assembly and the lamp body, respectively. The fastener has a threaded hole, and the sliding bolt is threadedly connected to the threaded hole.

[0019] In one embodiment, the second sealing component includes a first metal part and a first elastic part. The first elastic part is sleeved on the outer wall of the first metal part. The first metal part is provided with a first through hole for the sliding bolt to pass through. The two sides of the first elastic part that are opposite to each other abut against the back door panel assembly and the lamp body, respectively.

[0020] In one embodiment, the first elastic member has a sealing portion on the side facing the rear door panel assembly, and the sealing portion abuts against the rear door panel assembly;

[0021] And / or,

[0022] The fastener includes a nut and a collar. The nut has a threaded hole. The collar includes a second metal part and a second elastic part. The second metal part has a second through hole through which the sliding bolt passes. One end of the second metal part abuts against the nut. The other end of the second metal part passes through the second mounting hole and abuts against the first metal part. One side of the second elastic part is connected to the second metal part, and the other side of the second elastic part abuts against the back door panel assembly.

[0023] In one embodiment, the rear door panel assembly includes an inner rear door panel and an outer rear door panel connected to each other. The outer rear door panel is provided with the boss, the first mounting hole, and the second mounting hole, and the inner rear door panel is provided with a working hole.

[0024] In one embodiment, the width of the limiting groove gradually widens towards the back door panel assembly, and a first reinforcing rib and a second reinforcing rib are respectively provided on both sides of the limiting groove that are arranged opposite to each other along the first direction.

[0025] And / or,

[0026] The lamp body includes at least two mounting areas, which are respectively located on both sides of the limiting groove that are arranged opposite to each other along the first direction. Each mounting area is provided with at least one first sliding groove and at least one second sliding groove. The number of the buckle components is the same as the number of the first sliding grooves and is arranged in a one-to-one correspondence. The number of the fastening components is the same as the number of the second sliding grooves and is arranged in a one-to-one correspondence.

[0027] In this embodiment of the invention, the first direction is the left-right direction, i.e., the width direction of the lamp body; the second direction is the up-down direction, i.e., the height direction of the lamp body; and the third direction is the front-back direction, i.e., the length direction of the lamp body. The boss on the back panel assembly is inserted into the limiting groove, allowing the groove wall to abut tightly against the boss, thereby restricting the movement of the lamp body relative to the back panel assembly in the left-right direction. This achieves left-right positioning of the lamp body. Simultaneously, the limiting groove allows the boss to slide relative to it in the up-down direction. This design achieves the primary positioning function in the left-right direction while retaining the freedom of movement in the up-down direction, mitigating the impact of manufacturing errors or assembly deviations. The deformation caused by the difference in material thermal expansion provides a buffer space; both the snap-fit ​​assembly and the fastening assembly are connected to the back panel assembly, thereby realizing the installation and fixation of the lamp body and the back panel assembly. The snap-fit ​​assembly forms a sliding fit with the first sliding groove on the lamp body, allowing the snap-fit ​​assembly to move relative to the lamp body in the left and right directions. The groove wall of the first sliding groove can strictly limit the displacement of the snap-fit ​​assembly in the up and down and front and back directions, so that the snap-fit ​​assembly can achieve the positioning function in the up and down and front and back directions while retaining the freedom of movement in the left and right directions, providing a buffer space for the deformation caused by the difference in material thermal expansion. Similarly, the fastening assembly and the second sliding groove on the lamp body form a sliding fit. The groove forms a sliding fit, allowing the fastening component to move relative to the lamp body in the left-right direction. Furthermore, the fastening component connects to the rear door panel assembly, restricting the lamp body's movement relative to the rear door panel assembly in the front-back direction. This allows the fastening component to achieve front-back positioning while retaining freedom of movement in the left-right direction, providing a buffer for deformation caused by differences in material thermal expansion. In this embodiment, both the end of the latching component near the rear door panel assembly and the end of the fastening component near the rear door panel assembly are inclined downwards. That is, when the latching component and the fastening component are installed from the lamp body towards the rear door panel assembly, the latching component and the fastening component... All the fastening components are tilted from the rear top to the front bottom, forming a forward and downward support angle. This tilting structure is not a simple geometric design, but an optimized layout based on the stress state of the lamp body during assembly. In actual installation, when the buckle component is inserted into the first slide groove and the fastening component is inserted into the second slide groove, the tilting angle allows the connection point to apply a certain supporting torque to the lamp body even when it is not fully locked. This effectively prevents the lamp body from tilting backward due to its own weight. Without the need for manual support, the lamp body can be prevented from coming off or falling, greatly improving the safety, efficiency and convenience of the installation operation.This embodiment of the invention achieves left-right positioning of the lamp body by employing a boss and a limiting groove structure. Compared with traditional installation methods, it eliminates the need for mounting holes on the back panel assembly, reducing the risk of water ingress. Furthermore, since the boss can move vertically relative to the limiting groove, the slight relative displacement between the boss and the limiting groove in the vertical direction reduces internal stress in the lamp body caused by differences in installation precision, thus preventing cracking. The use of a snap-fit ​​assembly that can move horizontally relative to the first sliding groove and a fastening assembly that can move horizontally relative to the second sliding groove ensures that even during thermal expansion and contraction, the lamp body and the back panel remain in a stable position. Although the coefficients of thermal expansion of the door panel components differ, both the snap-fit ​​components and the sliding bolts can undergo slight relative displacement with respect to the lamp body in the left-right direction. This significantly reduces the internal stress of the lamp body, preventing cracking and improving the reliability of the rear through-type taillight installation structure. By using a downward-sloping design for both the snap-fit ​​component near the rear door panel component and the fastening component near the rear door panel component, the snap-fit ​​component and fastening component can apply a supporting torque to the lamp body even when not fully locked. This effectively prevents the lamp body from tilting backward due to its own weight, preventing it from coming off or falling off, thus improving installation convenience. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of an embodiment of the mounting structure for the rear through-type taillight of this utility model;

[0030] Figure 2 This is a schematic diagram of another perspective of the mounting structure of the rear through-type taillight of this utility model.

[0031] Figure 3 This is a schematic diagram of an embodiment of the rear through-type taillight mounting structure of the present utility model.

[0032] Figure 4 This is a partial structural schematic diagram of an embodiment of the rear through-type taillight mounting structure of the present utility model.

[0033] Figure 5 for Figure 2 FF sectional view;

[0034] Figure 6 for Figure 2 Schematic diagram of GG cross-section;

[0035] Figure 7 for Figure 2 Schematic diagram of HH cross-section;

[0036] Figure 8 for Figure 7 A magnified view of a section at point J;

[0037] Figure 9 for Figure 2 Schematic diagram of section II.

[0038] Explanation of icon numbers:

[0039] 100. Rear through-type taillight mounting structure; 1. Tailgate panel assembly; 11. Tailgate inner panel; 111. Working hole; 12. Tailgate outer panel; 121. Boss; 122. First mounting hole; 123. Second mounting hole; 2. Lamp body; 21. Limiting groove; 22. Mounting area; 221. First sliding groove; 222. Second sliding groove; 24. First reinforcing rib; 25. Second reinforcing rib; 3. Buckle assembly; 31. First buckle; 311. Body; 3111. Guide part; 3112, Connecting part; 312, Flange; 32, Second snap-fit; 33, First sealing component; 4, Fastening assembly; 41, Sliding bolt; 42, Second sealing component; 421, First metal part; 4211, First through hole; 422, First elastic element; 4221, Sealing part; 43, Fastener; 431, Nut; 4311, Threaded hole; 432, Collar; 4321, Second metal part; 43211, Second through hole; 4322, Second elastic element.

[0040] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0042] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] With the rapid development of automotive lighting technology, continuous taillights have become a mainstream element in modern automotive design. At the same time, the rapid rise of the new energy electric vehicle market has driven the automotive industry's increasing demand for energy conservation and lightweighting. To respond to these demands, automakers have begun using resin materials as the primary structural material for tailgates to achieve the goals of reducing vehicle weight and improving energy efficiency. This shift not only helps improve the overall performance of the vehicle but also brings greater design flexibility, meeting market requirements for diverse appearances and environmental protection.

[0045] However, while lightweight materials are widely used, the traditional metal back door lamp mounting structure has failed to adapt to the characteristics of new resin materials in a timely manner, resulting in the lamp body being prone to cracking and difficult to assemble during actual application.

[0046] After careful research, the applicant discovered that the common connection methods between the continuous taillight and the tailgate mainly include two structures: one is a pin and sleeve structure, and the other is a heat-embedded bolt and nut structure. Typically, the continuous taillight is symmetrically arranged, with a metal pin at the center serving as a positioning reference in the length, width, and height directions. Multiple heat-embedded bolts are arranged sequentially from the center to both sides, with the outermost bolt responsible for positioning in the length and height directions, while the others only provide positioning in the length direction. Specifically, in the pin and sleeve structure, the pin is heat-embedded in the lamp body, and the sleeve is pressed into the opening in the tailgate outer panel. Waterproofing is achieved through the flange edge and sealing sponge. During assembly, the lamp body moves the pin into the sleeve, achieving positioning in the length, width, and height directions. In the heat-embedded bolt and nut structure, the heat-embedded bolt is fixed to the lamp body, and its flange also has sealing sponge to prevent moisture penetration. During installation, the lamp body moves the heat-embedded bolt through the oblong hole in the tailgate outer panel, and finally, the nut is tightened to complete the fixation. While the above structure performs stably and reliably in traditional metal back doors, it reveals the following drawbacks when applied to resin back door structures:

[0047] ① Stress concentration leads to lamp body cracking: The pin at the center of symmetry serves as a positioning reference in the length, width and height directions. When there are differences in precision during installation, this fixed connection method does not allow any slight relative displacement to relieve internal stress, thereby increasing the stress inside the lamp body and easily leading to lamp body cracking.

[0048] ② Increased internal stress of the lamp body caused by thermal expansion and contraction: The lamp body is completely fixed to the outer panel of the rear door through the structure of thermally embedded bolts and nuts. Since the thermal expansion coefficients of the lamp body and the outer panel of the rear door are different, different expansion or contraction rates will occur between the two when the temperature changes. This will increase the internal stress of the lamp body, which may lead to cracking of the lamp body.

[0049] ③ Creep of resin material causes nut to loosen: The lamp body is fixed to the outer panel of the back door made of resin using a structure of heat-embedded bolts and nuts. The axial force transmission path is nut, resin back door outer panel, heat-embedded bolt. Due to long-term pressure, the resin material will creep, which will cause the original locking force to weaken or even disappear, eventually causing the nut to loosen and the installation structure to fail.

[0050] ④Inconvenient installation: The outermost heat-embedded bolts at both ends of the lamp body define the positioning reference in the length and height directions, while the corresponding waist-shaped holes on the outer panel of the back door are small in the height direction, making it difficult to align these waist-shaped holes when installing the lamp body, thus reducing the convenience of installation.

[0051] ⑤ The lamp body is unstable during assembly: During the assembly of the lamp body, when the pin is just inserted into the rubber sleeve but before the nut is tightened, the lamp body will tend to flip backward due to its own weight. In order to prevent the lamp body from falling off or falling during this period, it is necessary to manually hold the lamp body. This not only increases the difficulty of the work, but also reduces the efficiency and safety of the installation work.

[0052] The main purpose of this utility model is to propose a mounting structure for a rear through-type taillight to solve the problems of lamp body cracking and assembly difficulties.

[0053] Please see Figures 1 to 4 In one embodiment of this utility model, the mounting structure 100 of the rear through-type taillight includes a tailgate panel assembly 1, a lamp body 2, a buckle assembly 3, and a fastening assembly 4. The tailgate panel assembly 1 is provided with a boss 121; the lamp body 2 is provided with a limiting groove 21, a first sliding groove 221, and a second sliding groove 222. The wall of the limiting groove 21 abuts against the boss 121 to restrict the lamp body 2 from moving relative to the tailgate panel assembly 1 in a first direction, and the boss 121 can move relative to the limiting groove 21 in a second direction. The buckle assembly 3 is connected to the tailgate panel assembly 1, and the end of the buckle assembly 3 near the tailgate panel assembly 1 is inclined downwards. The buckle assembly 3 slides with the first sliding groove 221 so that the buckle assembly 3 can move relative to the lamp body 2 in a first direction. The fastening assembly 4 moves in the direction of the first slide groove 221, and the groove wall of the first slide groove 221 can restrict the movement of the fastening assembly 3 relative to the lamp body 2 in the second direction and the third direction. The fastening assembly 4 is slidably engaged with the second slide groove 222 so that the fastening assembly 4 can move relative to the lamp body 2 in the first direction. The fastening assembly 4 is connected to the back door panel assembly 1, and the end of the fastening assembly 4 near the back door panel assembly 1 is inclined downward so that the fastening assembly 4 can restrict the movement of the lamp body 2 relative to the back door panel assembly 1 in the third direction. The fastening assembly 4 is connected to the back door panel assembly 1 in the third direction, and the fastening assembly 4 is inclined downward along the axis of the third direction to restrict the movement of the fastening assembly 4 relative to the back door panel assembly 1 in the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0054] In this embodiment of the utility model, the first direction is the left-right direction, i.e., the width direction of the lamp body 2; the second direction is the up-down direction, i.e., the height direction of the lamp body 2; and the third direction is the front-back direction, i.e., the length direction of the lamp body 2. The protrusion 121 on the back panel assembly 1 is inserted into the limiting groove 21, so that the groove wall of the limiting groove 21 can tightly abut against the protrusion 121, thereby restricting the movement of the lamp body 2 relative to the back panel assembly 1 in the left-right direction, thus achieving the left-right positioning of the lamp body 2. Simultaneously, the limiting groove 21 allows the protrusion 121 to slide relative to it in the up-down direction. This design achieves the main positioning function in the left-right direction while retaining the freedom of movement in the up-down direction, mitigating the impact of manufacturing errors. The fastening assembly 3 and fastening assembly 4 are both connected to the back panel assembly 1, thereby realizing the installation and fixation of the lamp body 2 and the back panel assembly 1. The fastening assembly 3 forms a sliding fit with the first sliding groove 221 on the lamp body 2, so that the fastening assembly 3 can move relative to the lamp body 2 in the left and right directions. The groove wall of the first sliding groove 221 can strictly limit the displacement of the fastening assembly 3 in the up and down and front and back directions. This allows the fastening assembly 3 to achieve the positioning function in the up and down and front and back directions while retaining the freedom of movement in the left and right directions, providing a buffer space for deformation caused by the difference in thermal expansion of materials. Similarly, the fastening assembly 4 is connected to the back panel assembly 1. The second groove 222 forms a sliding fit, allowing the fastening component 4 to move relative to the lamp body 2 in the left and right directions. The fastening component 4 is connected to the back panel assembly 1, restricting the lamp body 2 from moving relative to the back panel assembly 1 in the front and back directions. This allows the fastening component 4 to achieve front and back positioning while retaining freedom of movement in the left and right directions, providing a buffer space for deformation caused by differences in material thermal expansion. Furthermore, in this embodiment, the ends of the buckle assembly 3 and the fastening component 4 near the back panel assembly 1 are both inclined downwards. That is, when the buckle assembly 3 and the fastening component 4 are installed from the lamp body 2 towards the back panel assembly 1, the buckle assembly… Both component 3 and fastening component 4 are inclined from the rear top to the front bottom, thus forming a support angle in the forward and downward direction. This inclined structure is not a simple geometric design, but an optimized layout based on the stress state of the lamp body 2 during assembly. In actual installation, when the buckle component 3 is inserted into the first slide groove 221 and the fastening component 4 is inserted into the second slide groove 222, their inclination angle allows the connection point to apply a certain supporting torque to the lamp body 2 even when it is not fully locked. This effectively prevents the lamp body 2 from flipping backward due to its own weight. Without the need for manual support, the lamp body 2 can be prevented from falling out, greatly improving the safety, efficiency and convenience of the installation operation.

[0055] The technical solution of this utility model achieves the positioning of the lamp body 2 in the left-right direction by adopting the structure of the boss 121 and the limiting groove 21. Compared with the traditional installation method, there is no need to open the mounting hole on the back panel assembly 1, which can reduce the risk of water ingress. Moreover, since the boss 121 can move in the vertical direction relative to the limiting groove 21, the internal stress generated by the lamp body 2 due to the difference in installation accuracy can be reduced by the slight relative displacement between the boss 121 and the limiting groove 21 in the vertical direction, thereby avoiding cracking of the lamp body 2. By adopting the buckle assembly 3 which can move in the left-right direction relative to the first sliding groove 221 and the fastening assembly 4 which can move in the left-right direction relative to the second sliding groove 222, it is possible to prevent cracking of the lamp body 2 when thermal expansion and contraction occurs. The difference in thermal expansion coefficients between the lamp body 2 and the rear door panel assembly 1 allows for slight relative displacement of the latch assembly 3 and the sliding bolt 41 relative to the lamp body 2 in the left-right direction, thereby greatly reducing the internal stress of the lamp body 2, preventing cracking of the lamp body, and improving the reliability of the rear through-type taillight installation structure 100. By using a downward-sloping arrangement for both the end of the latch assembly 3 near the rear door panel assembly 1 and the end of the fastening assembly 4 near the rear door panel assembly 1, the latch assembly 3 and the fastening assembly 4 can apply a supporting torque to the lamp body 2 even when not fully locked, effectively preventing the lamp body 2 from flipping backward due to its own weight, preventing the lamp body 2 from falling off, and thus improving the convenience of installation.

[0056] Please see Figures 5 to 8 In one embodiment, the angle between the axis of the latching assembly and the horizontal plane is defined as A, then: 3° ≤ A ≤ 10°; and / or, the angle between the axis of the fastening assembly and the horizontal plane is defined as B, then: 3° ≤ B ≤ 10°; specifically, since the end of the latching assembly 3 near the back panel assembly 1 and the end of the fastening assembly 4 near the back panel assembly 1 are both inclined downwards, an angle A is formed between the axis of the latching assembly and the horizontal plane, and an angle B is formed between the axis of the fastening assembly and the horizontal plane. By controlling both angles A and B between 3° and 10°, the latching assembly 3 and the fastening assembly 4 can apply a certain supporting torque to the lamp body 2 even when not fully locked, which can effectively... To prevent the lamp body 2 from tipping backward due to its own weight, this design solves the problem of traditional installation methods where the lamp body 2 easily wobbles or even falls off due to its own weight because of the lack of an effective temporary support structure before it is fully locked. This design eliminates the need for manual support of the lamp body 2, preventing it from detaching or falling, significantly improving the safety, efficiency, and convenience of the installation operation. Furthermore, both angles A and B are between 3° and 10°, avoiding insufficient supporting torque due to a small tilt angle, which would be unable to effectively resist the tipping torque caused by the lamp body 2's own weight, thus preventing it from easily tipping or falling off before being fully locked. It also avoids the connection strength and installation stability being affected by an excessively large tilt angle. In this embodiment, both angles A and B are 5°.

[0057] Please see Figure 1 and Figure 5 In one embodiment, the snap-fit ​​assembly 3 includes a snap-fit ​​and a first sealing component 33. The snap-fit ​​includes a body 311 and a flange 312 connected to each other. The body 311 is slidably engaged with a first groove 221. The back panel assembly 1 is provided with a first mounting hole 122 through which the body 311 passes. The outer wall of the body 311 abuts against the groove wall of the first groove 221. The first sealing component 33 is located between the back panel assembly 1 and the flange 312. The two opposite sides of the first sealing component 33 abut against the back panel assembly 1 and the flange 312, respectively. Specifically, the sliding engagement between the body 311 of the snap-fit ​​and the first groove 221 can greatly reduce the internal stress of the lamp body 2 during thermal expansion and contraction, preventing the lamp body 2 from cracking. At the same time, the body 311... The tight fit between the outer wall and the groove wall of the first sliding groove 221 enhances the connection stability between the tailgate assembly 1 and the lamp body 2, improving the overall reliability of the rear through-type taillight mounting structure 100. The flange 312 is connected to the body 311, serving to press the first sealing component 33. The first sealing component 33 is located between the flange 312 and the tailgate assembly 1, and its function is to prevent external moisture, dust, and other pollutants from entering the vehicle body through the gap between the body 311 and the tailgate assembly 1. The first sealing component 33 undergoes a certain compression deformation under the pressure of the flange 312, thereby forming a reliable sealing interface. This design not only improves the environmental protection level of the entire vehicle, but also effectively avoids corrosion or short circuit problems of electrical components inside the lamp body 2 caused by moisture infiltration. In this embodiment, the first sealing component 33 can be made of sealing sponge, rubber, or thermoplastic elastomer, etc., and this embodiment is not limited to this.

[0058] Please see Figure 5 In one embodiment, the body 311 includes a guide portion 3111 and a connecting portion 3112 connected to each other. The connecting portion 3112 is connected to the flange 312. The end of the connecting portion 3112 away from the guide portion 3111 is slidably engaged with the first slide groove 221. The outer wall of the connecting portion 3112 abuts against the groove wall of the first slide groove 221. Specifically, the reasonable segmented design of the guide portion 3111 and the connecting portion 3112 makes it easier for the buckle assembly 3 to bear force during use. The outer wall of the connecting portion 3112 is tightly fitted with the groove wall of the first slide groove 221, playing a positioning and limiting role, and guiding... Part 3111 can be designed as a pointed cone or an arc shape, which has good self-guiding properties. During installation, the main body 311 does not need to be precisely aligned with the first mounting hole 122 to accurately insert and fix the main body 3111. The presence of the guide part 3111 significantly improves the ease of insertion between the main body 311 and the first mounting hole 122. Even if there is a slight assembly deviation during installation, it can be automatically corrected by the guide part 3111, avoiding the problem of repeated adjustments caused by insertion difficulties in traditional structures, improving assembly efficiency, and is particularly suitable for mass production scenarios, which can improve assembly cycle time and work consistency.

[0059] Please see Figure 5 and Figure 6 In one embodiment, the number of snap fasteners is at least two, and the number of first sealing components 33 is the same as the number of snap fasteners and they are arranged in a one-to-one correspondence. The at least two snap fasteners are a first snap fastener 31 and a second snap fastener 32. The gap between the outer wall of the connecting part 3112 of the first snap fastener 31 and the groove wall of the first sliding groove 221 is defined as C, then: 0.1mm ≤ C ≤ 0.2mm; the gap between the outer wall of the connecting part 3112 of the second snap fastener 32 and the groove wall of the first sliding groove 221 is defined as D, then: 0.5mm ≤ D. ≤1.5mm; Specifically, by setting different fitting gaps between the first buckle 31 and the second buckle 32 and the corresponding first slide groove 221, the function of combining main positioning and flexible compensation is realized during the installation of the lamp body 2. The gap between the outer wall of the connecting part 3112 of the first buckle 31 and the groove wall of the first slide groove 221 is small, C is between 0.1mm and 0.2mm. This fitting method enables the first buckle 31 to play a main positioning role after assembly, and provides a strong limiting ability for the lamp body 2. To ensure accurate mounting posture of the lamp body 2 on the vehicle and improve appearance consistency, the gap between the outer wall of the connecting part 3112 of the second clip 32 and the groove wall of the first sliding groove 221 is relatively large, D is between 0.5mm and 1.5mm. This structure enhances the system's tolerance to assembly errors without affecting the overall structural strength. By adopting the overall layout of the first clip 31 and the second clip 32, both positioning accuracy and assembly fault tolerance are taken into account, improving the consistency of installation quality. The specific number of the first clip 31 and the second clip 32 can be selected according to actual needs. This embodiment does not limit this. In this embodiment, there are three first clips 31 and one second clip 32. The three first clips 31 are spaced apart along the direction away from the limiting groove 21, and the second clip 32 is set at the edge of the lamp body 2, so that the entire lamp body 2 forms multi-point fixation in the left and right directions, the force is more even, the risk of a single connection point bearing the entire load is reduced, and the connection loosening problem caused by resin material creep or vibration impact is avoided.

[0060] Please see Figure 1 and Figure 7In one embodiment, the fastening assembly 4 includes a sliding bolt 41, a second sealing component 42, and a fastener 43. The sliding bolt 41 is slidably engaged with the second sliding groove 222, allowing the sliding bolt 41 to move relative to the lamp body 2 in a first direction. The back panel assembly 1 is provided with a second mounting hole 123 through which the sliding bolt 41 passes. The second sealing component 42 is located between the back panel assembly 1 and the lamp body 2, with its opposite sides abutting against the back panel assembly 1 and the lamp body 2, respectively. The fastener 43 is provided with a threaded hole 4311, and the sliding bolt 41 is threadedly connected to the threaded hole 4311. Specifically, the sliding bolt 41, as the core bearing component of the fastening assembly 4, is connected to the second sliding groove 222 by means of the second sliding groove 422. The sliding fit of the groove 222 greatly reduces the internal stress of the lamp body 2 during thermal expansion and contraction, preventing the lamp body 2 from cracking. At the same time, the threaded connection between the groove bolt 41 and the threaded hole 4311 on the fastener 43 ensures the connection stability between the tailgate assembly 1 and the lamp body 2, improving the overall reliability of the rear through taillight mounting structure 100. The second sealing component 42 is set between the tailgate assembly 1 and the lamp body 2, forming an effective sealing space after the fastener 43 is locked. This prevents external moisture, dust and other contaminants from entering the vehicle body through the gap between the body 311 and the tailgate assembly 1, thereby avoiding corrosion or short circuit of the electrical components inside the lamp body 2 caused by moisture infiltration.

[0061] Please see Figure 8 In one embodiment, the second sealing component 42 includes a first metal part 421 and a first elastic part 422. The first elastic part 422 is sleeved on the outer wall of the first metal part 421. The first metal part 421 has a first through hole 4211 for the sliding bolt 41 to pass through. The two opposite sides of the first elastic part 422 abut against the back panel assembly 1 and the lamp body 2, respectively. Specifically, the first metal part 421 serves as the core support structure of the second sealing component 42, mainly used to bear mechanical loads. The first through hole 4211 on it allows the sliding bolt 41 to pass through smoothly. At the same time, since the first elastic part 422 is sleeved on the outer wall of the first metal part 421, it avoids the first... The first elastic element 422 undergoes excessive deformation or displacement during the locking process to ensure connection reliability during long-term use. The first elastic element 422 is a key component for achieving the sealing function. During the tightening of the sliding bolt 41, the first elastic element 422 can deform under the axial force applied by the first metal part 421, allowing both sides of the first elastic element 422 to fit tightly against the tailgate panel assembly 1 and the lamp body 2 respectively, thus achieving an effective seal. This effectively prevents external moisture, dust, and other contaminants from invading the vehicle body through the gap between the lamp body 2 and the tailgate panel assembly 1, improving the adaptability of the rear through-type taillight mounting structure 100 under different working conditions and its long-term reliability. In this embodiment, the first elastic element 422 can be made of materials such as rubber or thermoplastic elastomers; this embodiment is not limited to these materials.

[0062] Please see Figure 8In one embodiment, the first elastic member 422 has a sealing portion 4221 on the side facing the rear door panel assembly 1, and the sealing portion 4221 abuts against the rear door panel assembly 1; and / or, the fastener 43 includes a nut 431 and a collar 432, the nut 431 has a threaded hole 4311, the collar 432 includes a second metal member 4321 and a second elastic member 4322, the second metal member 4321 has a second through hole 43211 for the sliding bolt 41 to pass through, one end of the second metal member 4321 abuts against the nut 431, the other end of the second metal member 4321 passes through the second mounting hole 123 and abuts against the first metal member 421, one side of the second elastic member 4322 is connected to the second metal member 4321, and the second elastic member... The other side of 4322 abuts against the rear door panel assembly 1; specifically, in this embodiment, the sealing part 4221 is a two-ring protrusion structure with a partial triangular cross-section extending from the side of the first elastic member 422 facing the rear door panel assembly 1. The sealing part 4221 directly contacts the surface of the rear door panel assembly 1 and is compressed and deformed during the locking process. Through the sealing part 4221, the tightness of the fit between the rear door panel assembly 1 and the sealing part 4221 can be further enhanced, improving the sealing performance and achieving a better waterproof effect; the nut 431 is used to form a threaded connection with the sliding bolt 41 and is a key component for achieving final locking. It provides the main source of clamping force, has a simple structure, strong locking force, and is easy to operate. The second metal part 43 on the collar 432 21 primarily serves a load-bearing and guiding function. During installation, one end of the second metal part 4321 abuts against the nut 431, and the other end passes through the second mounting hole 123 and abuts against the first metal part 421. This allows the axial locking force of the fastening assembly 4 to be transmitted sequentially along the order of the nut 431, the second metal part 4321, the first metal part 421, and the sliding bolt 41. Even if the back door panel assembly 1 and the lamp body 2 experience creep, because all components along the locking force transmission path are made of metal, and metal has excellent creep resistance, the structure of the nut 431 and the sliding bolt 41 can still maintain the axial locking force, and the nut 431 will not loosen. The second elastic element 4322 on the collar 432 serves a sealing function, ensuring that the nut 431 is locked. During the tightening process, the second elastic element 4322 can be subjected to the axial force applied by the second metal element 4321, thereby making the second elastic element 4322 tightly adhere to the tailgate assembly 1, thus achieving an effective seal. A semi-circular protrusion can be provided on the side of the second elastic element 4322 facing the tailgate assembly 1. When the second elastic element 4322 is subjected to the axial force applied by the second metal element 4321, the semi-circular protrusion will be crushed, thereby allowing the collar 432 and the second sealing component 42 to tightly adhere to and clamp the tailgate assembly 1. This can effectively prevent external moisture, dust and other pollutants from entering the vehicle body through the gap between the lamp body 2 and the tailgate assembly 1, improving the adaptability of the rear through taillight mounting structure 100 under different working conditions and the reliability of long-term use.In this embodiment, the second elastic element 4322 may be made of resin, rubber or thermoplastic elastomer, etc., and this embodiment does not limit it.

[0063] Please see Figure 1 In one embodiment, the tailgate panel assembly 1 includes an inner tailgate panel 11 and an outer tailgate panel 12 connected to each other. The outer tailgate panel 12 is provided with a boss 121, a first mounting hole 122, and a second mounting hole 123. The inner tailgate panel is provided with a working hole 111. Specifically, both the inner tailgate panel 11 and the outer tailgate panel 12 can be made of a specific material. The inner tailgate panel 11 serves as the internal support frame, and the outer tailgate panel 12 is the external visible surface. The two can be connected to each other by means of adhesive bonding, welding, gluing, snap-fitting, or bolts to form a complete tailgate panel assembly 1. This split design takes into account both structural strength and lightweight requirements, and is suitable for the lightweight development trend of new energy vehicles. The plate 12 is provided with a boss 121, a first mounting hole 122 and a second mounting hole 123, which are used to connect with the limiting groove 21, the buckle assembly 3 and the fastening assembly 4 on the lamp body 2 respectively, thereby realizing the installation and fixation of the lamp body 2 and the outer panel 12 of the tailgate. Since the fastening assembly 4 needs to be tightened with a nut 431, for ease of operation, a working hole 111 is provided on the inner panel 11 of the tailgate corresponding to the second mounting hole 123, providing an operating passage for the assembly personnel, thereby facilitating the locking operation of the fastening assembly 4 from the inside of the vehicle body. This avoids the inconvenience of blind installation or high-altitude operation from the outside in the traditional structure, and significantly improves the locking efficiency and accuracy of the fastening assembly 4.

[0064] Please see Figure 1 , Figure 3 and Figure 9In one embodiment, the width of the limiting groove 21 gradually widens towards the back door panel assembly 1, and the limiting groove 21 is provided with a first reinforcing rib 24 and a second reinforcing rib 25 on both sides opposite to each other along the first direction; and / or, the lamp body 2 includes at least two mounting areas 22, which are located on both sides opposite to each other along the first direction of the limiting groove 21. Each mounting area is provided with at least one first sliding groove 221 and at least one second sliding groove 222. The number of snap-fit ​​components 3 is the same as the number of first sliding grooves 221 and they are arranged in a one-to-one correspondence for fastening. The number of components 4 is consistent with the number of second slide grooves 222 and they are set one-to-one. Specifically, the limiting groove 21 is provided on the lamp body 2 to cooperate with the boss 121 on the back door panel assembly 1. The width of the limiting groove 21 gradually widens towards the back door panel assembly 1, that is, the end of the limiting groove 21 facing the back door panel assembly 1 has a larger opening, forming a wedge-shaped structure. This structure helps guide the boss 121 to smoothly enter the limiting groove 21 and makes the boss 121 and the limiting groove 21 gradually fit tightly together, thereby completely restricting the movement of the lamp body 2 in the left and right directions, even if there is slight movement. Even with manufacturing tolerances or assembly errors, the wedge structure can automatically adjust to the optimal position through changes in contact area, ensuring installation stability. In this embodiment, the groove walls on both sides of the limiting groove 21, which are arranged opposite each other in the left-right direction, form an angle E with the front-back direction. E is between 3° and 10°, which not only plays a good guiding role during assembly, allowing the lamp body boss 121 to smoothly enter the limiting groove 21, but also improves the stability of the limiting fit, preventing jamming or misalignment due to assembly deviations. In this embodiment, E can be selected as 5°. During the long-term use of the lamp body 2, the limiting... As the main positioning structure, the groove 21 will bear a certain load. The design of the first reinforcing rib 24 and the second reinforcing rib 25 improves the structural strength and deformation resistance of the limiting groove 21, which can prevent the groove wall from deforming due to vibration, temperature change or assembly stress, extend the service life of the limiting groove 21, and ensure the long-term stable and effective main positioning function, thereby improving the durability and stability of the rear through taillight mounting structure 100. In this embodiment, the first reinforcing rib 24 and the second reinforcing rib 25 can both adopt cross rib, diagonal rib or grid rib structure, etc., and this embodiment does not limit it.At least two mounting areas 22 are located on the left and right sides of the limiting groove 21, respectively. Each mounting area 22 is provided with at least one first sliding groove 221 and at least one second sliding groove 222. In this embodiment, there are two mounting areas 22, and the two mounting areas 22 have the same structure, so that the entire rear through-type taillight mounting structure 100 is mirror-image of the limiting groove 21. The limiting groove 21 and the boss 121 in the central area are the main positioning points. The snap-fit ​​assembly 3 is used to release stress, and the fastening assembly 4 in the edge area is used to provide rigid locking. This layout enhances the system's flexible adaptability and improves the overall structural stability and vibration resistance, making the stress on the lamp body 2 more uniform, avoiding a single connection point bearing the entire load, significantly reducing the risk of stress concentration caused by material thermal deformation, and preventing the lamp body 2 from cracking and failing.

[0065] In this embodiment, the installation steps of the rear through-type taillight mounting structure 100 include: ① pre-assembly of the tailgate panel assembly 1, whereby the outer tailgate panel 12 and the inner tailgate panel are connected by adhesive to form a complete tailgate panel assembly 1; ② positioning and alignment to achieve wedge-shaped structure matching, aligning the limiting groove 21 in the center of the lamp body 2 with the protrusion 121 on the outer tailgate panel 12 to achieve initial positioning of the lamp body 2 in the width direction; ③ pushing the rear through-type taillight from back to front in the front-rear direction, so that the sliding bolt 41 passes through the corresponding second mounting hole 123 on the outer tailgate panel 12. This step achieves guided assembly of the lamp in the front-rear direction and provides basic support for subsequent fastening operations; ④ during the pushing process, the buckle assembly 3 is simultaneously embedded in the corresponding first mounting hole 122 of the outer tailgate panel 12 to achieve temporary fixation of the lamp body 2. This pre-fixing structure helps prevent the lamp body 2 from shifting in subsequent operations, improving assembly stability and operational safety. ⑤ Finally, insert the collar 432 and nut 431 through the working hole 111 on the side of the tailgate inner panel to lock and fix the sliding bolt 41, thus completing the final installation of the entire rear through taillight mounting structure 100.

[0066] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A mounting structure of a rear through-type tail lamp characterized by comprising: The mounting structure for the rear through-type taillight includes: A rear door panel assembly, wherein a boss is provided on the rear door panel assembly; The lamp body is provided with a limiting groove, a first sliding groove and a second sliding groove. The groove wall of the limiting groove abuts against the boss to restrict the lamp body from moving relative to the back door panel assembly in a first direction, and the boss can move relative to the limiting groove in a second direction. A latching assembly is connected to the rear door panel assembly, and the end of the latching assembly near the rear door panel assembly is inclined downward. The latching assembly slides with the first sliding groove so that the latching assembly can move relative to the lamp body in the first direction, and the groove wall of the first sliding groove can restrict the movement of the latching assembly relative to the lamp body in the second direction and the third direction. A fastening assembly is provided, which is slidably engaged with the second slide groove so that the fastening assembly can move relative to the lamp body along the first direction. The fastening assembly is connected to the rear door panel assembly, and the end of the fastening assembly near the rear door panel assembly is inclined downward so that the fastening assembly can restrict the movement of the lamp body relative to the rear door panel assembly along the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

2. The mounting structure of the rear through tail lamp according to claim 1, wherein If the angle between the axis of the buckle assembly and the horizontal plane is defined as A, then: 3°≤A≤10°; And / or, If the angle between the axis of the fastening assembly and the horizontal plane is defined as B, then: 3°≤B≤10°.

3. The mounting structure of the rear through tail lamp according to claim 1, wherein The snap-fit ​​assembly includes a snap-fit ​​and a first sealing component. The snap-fit ​​includes a body and a flange connected to each other. The body slides in conjunction with the first slide groove. The rear door panel assembly is provided with a first mounting hole through which the body passes. The outer wall of the body abuts against the groove wall of the first slide groove. The first sealing component is located between the rear door panel assembly and the flange. The two sides of the first sealing component that are opposite to each other abut against the rear door panel assembly and the flange, respectively.

4. The mounting structure of the rear through tail lamp according to claim 3, wherein The body includes a guide portion and a connecting portion that are connected to each other. The connecting portion is connected to the flange. The end of the connecting portion away from the guide portion is slidably engaged with the first slide groove. The outer wall of the connecting portion abuts against the groove wall of the first slide groove.

5. The mounting structure of the rear through tail lamp according to claim 3, wherein The number of the buckles is at least two, and the number of the first sealing components is the same as the number of the buckles and they are set in a one-to-one correspondence. The at least two buckles are the first buckle and the second buckle. If we define C as the gap between the outer wall of the connecting part of the first buckle and the groove wall of the first slide, then: 0.1mm≤C≤0.2mm; If we define the gap between the outer wall of the connecting part of the second buckle and the groove wall of the first slide as D, then we have: 0.5mm≤D≤1.5mm.

6. The mounting structure of the rear penetration tail lamp according to claim 3, wherein The fastening assembly includes a sliding bolt, a second sealing component, and a fastener. The sliding bolt slides into the second sliding groove so that it can move relative to the lamp body in the first direction. The rear door panel assembly has a second mounting hole through which the sliding bolt passes. The second sealing component is located between the rear door panel assembly and the lamp body. The two opposite sides of the second sealing component abut against the rear door panel assembly and the lamp body, respectively. The fastener has a threaded hole, and the sliding bolt is threadedly connected to the threaded hole.

7. The mounting structure of the rear through tail lamp according to claim 6, wherein The second sealing component includes a first metal part and a first elastic part. The first elastic part is sleeved on the outer wall of the first metal part. The first metal part is provided with a first through hole for the sliding bolt to pass through. The two sides of the first elastic part that are opposite to each other abut against the back door panel assembly and the lamp body, respectively.

8. The mounting structure of the rear through tail lamp according to claim 7, wherein The first elastic member has a sealing part on the side facing the rear door panel assembly, and the sealing part abuts against the rear door panel assembly; And / or, The fastener includes a nut and a collar. The nut has a threaded hole. The collar includes a second metal part and a second elastic part. The second metal part has a second through hole through which the sliding bolt passes. One end of the second metal part abuts against the nut. The other end of the second metal part passes through the second mounting hole and abuts against the first metal part. One side of the second elastic part is connected to the second metal part, and the other side of the second elastic part abuts against the back door panel assembly.

9. The mounting structure of the rear through tail lamp according to claim 7, wherein The rear door panel assembly includes an inner rear door panel and an outer rear door panel that are connected to each other. The outer rear door panel is provided with the boss, the first mounting hole and the second mounting hole, and the inner rear door panel is provided with a working hole.

10. The mounting structure of a rear through-hole tail lamp according to claim 1, wherein The width of the limiting groove gradually widens towards the back door panel assembly, and a first reinforcing rib and a second reinforcing rib are respectively provided on both sides of the limiting groove that are opposite to each other along the first direction. And / or, The lamp body includes at least two mounting areas, which are respectively located on both sides of the limiting groove that are arranged opposite to each other along the first direction. Each mounting area is provided with at least one first sliding groove and at least one second sliding groove. The number of the buckle components is the same as the number of the first sliding grooves and is arranged in a one-to-one correspondence. The number of the fastening components is the same as the number of the second sliding grooves and is arranged in a one-to-one correspondence.

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