Vehicle light

Abstract

The utility model discloses a car light relates to car light technical field, wherein, car light includes first lamp body and first installation subassembly, two rear combination lamps are along first direction respectively set up in the both sides of first lamp body, and every rear combination lamp includes second lamp body and second installation subassembly, and the distance of the end of first lamp body and adjacent second lamp body is not less than gap value, sheet metal component includes luggage compartment back door and side wall sheet metal. Through with first bolt and first buckle swing joint, so that even if rear through -penetrating lamp is heated expansion, first lamp body also can not drive first bolt and first buckle and one same removal, avoided first bolt and first buckle all with first lamp body fixed connection condition, first lamp body heated expansion and first bolt and first buckle can not remove the phenomenon that the junction place is easy to break down that causes to occur, thereby for rear combination lamp and rear through -penetrating lamp can maintain in a smaller size provides the guarantee.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to an automotive lighting system. Background Technology

[0002] The existing rear combination lights and rear through lights are not tightly fitted together; there is a certain gap between them. Since the rear combination lights are installed on the side panel and the rear through lights are installed on the trunk lid, there is also a gap between the side panel and the trunk lid. The gap between the existing rear combination lights and rear through lights is difficult to maintain for a long time, and it often appears that the gap between the rear combination lights and rear through lights increases after a period of use. Utility Model Content

[0003] The main purpose of this invention is to propose a vehicle light that aims to solve the problem of how to stably maintain a small size between the rear combination light and the rear through light.

[0004] To achieve the above objectives, the vehicle light proposed in this utility model includes:

[0005] The vehicle lighting assembly includes a rear through light and two rear combination lights. The rear through light includes a first lamp body and a first mounting assembly. The two rear combination lights are respectively disposed on both sides of the first lamp body along a first direction. Each rear combination light includes a second lamp body and a second mounting assembly. The distance between the end of the first lamp body and the adjacent second lamp body is not less than the gap value. The first direction is parallel to the length direction of the rear through light.

[0006] Sheet metal components, including trunk tailgate and side panel sheet metal, wherein the number of side panel sheet metal is the same as the number of rear combination lights and they are set one-to-one;

[0007] The first lamp body has multiple first mounting points on the side facing the trunk lid. The first mounting assembly includes a first positioning pin, a first bolt, and a first clip. The first positioning pin, the first bolt, and the first clip are each corresponding to a first mounting point. The first positioning pin is fixedly connected to the first lamp body, and the first bolt and the first clip are movably connected to the first lamp body so that the first bolt and the first clip can move relative to the first lamp body along the first direction. The movement distance of the first bolt relative to the first lamp body is not less than the expansion amount of the first mounting point corresponding to the first bolt. The movement distance of the first clip relative to the first lamp body is not less than the expansion amount of the first mounting point corresponding to the first clip. The trunk lid has a first positioning hole, a first bolt hole, and a first clip hole. The first positioning hole is for the first positioning pin to pass through, the first bolt hole is for the first bolt to pass through, and the first clip hole is for the first clip to pass through.

[0008] The second lamp body has multiple second mounting points on the side facing the side panel sheet metal. The second mounting assembly includes a second positioning pin, a second bolt, and a second clip. The second positioning pin, the second bolt, and the second clip are respectively provided for one of the second mounting points. The second positioning pin is fixedly connected to the second lamp body. The second bolt and the second clip are movably connected to the second lamp body so that the second bolt and the second clip can move relative to the second lamp body in the first direction. The movement stroke of the second bolt relative to the second lamp body is not less than the expansion amount of the second mounting point corresponding to the second bolt. The movement stroke of the second clip relative to the second lamp body is not less than the expansion amount of the second mounting point corresponding to the second clip. The trunk lid has a second positioning hole, a second bolt hole, and a second clip hole. The second positioning hole is for the second positioning pin to pass through, the second bolt hole is for the second bolt to pass through, and the second clip hole is for the second clip to pass through.

[0009] In one embodiment, the first bolt includes a first head and a first stud connected to each other. The first lamp body is provided with a bolt slot, which extends along the first direction. The first head engages with the bolt slot to restrict the first bolt from moving relative to the first lamp body along a second direction. The first direction and the second direction are perpendicular. The first lamp body and the trunk lid are arranged along the second direction. The first head is capable of moving relative to the bolt slot along the first direction.

[0010] In one embodiment, there are multiple first bolts, the number of first bolt holes is the same as the number of first bolts and they are arranged in a one-to-one correspondence, the number of bolt slots is the same as the number of first bolts and they are arranged in a one-to-one correspondence, the multiple first bolts are divided into a first bolt group and a second bolt group, the first bolt group includes at least two first bolts spaced apart along the first direction, the second bolt group includes at least two first bolts spaced apart along the first direction, and the first bolt group and the second bolt group are respectively arranged on both sides of the first positioning pin along the first direction.

[0011] In one embodiment, the first stud is threadedly connected to the first nut, the first nut and the first head are respectively located on opposite sides of the trunk lid along the second direction, the first direction is perpendicular to the second direction, and the side of the first nut facing the first head abuts against the trunk lid.

[0012] In one embodiment, the first buckle includes a first circular buckle and a first base body connected to each other. The first circular buckle is used to pass through the first buckle hole. The inner wall of the first buckle hole fits against the outer wall of the first circular buckle. A first buckle groove is provided on the first lamp body. The first buckle groove extends along the first direction. The first base body engages with the first buckle groove to restrict the first circular buckle from moving relative to the first lamp body along the second direction. The first direction and the second direction are perpendicular. The first base body can move relative to the first buckle groove along the first direction.

[0013] In one embodiment, the second bolt includes a second head and a second stud connected to each other. The second lamp body has a mounting hole, and the side panel sheet metal has a second bolt hole. The second head is located on the side of the second lamp body away from the side panel sheet metal. The second stud passes through the mounting hole and the second bolt hole. A waterproof sleeve and a washer are fitted on the second stud. The second stud is threadedly connected to a second nut to restrict the movement of the second lamp body relative to the side panel sheet metal in a second direction, wherein the first direction and the second direction are perpendicular.

[0014] In one embodiment, the number of the second bolts is at least two, the number of mounting holes is the same as the number of the second bolts and they are arranged in a one-to-one correspondence, and the number of the second bolt holes is the same as the number of the second bolts and they are arranged in a one-to-one correspondence.

[0015] In one embodiment, the second buckle includes a second circular buckle and a second base body connected to each other. The second circular buckle is used to pass through the second buckle hole. The inner wall of the second buckle hole fits against the outer wall of the second circular buckle. A second buckle groove is provided on the second lamp body. The second buckle groove extends along the first direction. The second base body engages with the second buckle groove to restrict the movement of the second circular buckle relative to the second lamp body along the second direction. The first direction and the second direction are perpendicular. The second base body can move relative to the second buckle groove along the first direction.

[0016] In one embodiment, the first positioning pin is an elastic positioning pin; the first positioning pin includes a first connecting part, a first limiting part and a first anti-detachment part connected in sequence, the first connecting part is connected to the first lamp body, the outer wall of the first limiting part is fitted with the inner wall of the first positioning hole, the first anti-detachment part is located on the side of the trunk door away from the first lamp body, and the outer diameter of the first anti-detachment part is larger than the inner diameter of the first positioning hole.

[0017] And / or, the second positioning pin is an elastic positioning pin, the second positioning pin includes a second connecting part, a second limiting part and a second anti-detachment part connected in sequence, the second connecting part is connected to the second lamp body, the outer wall of the second limiting part is fitted with the inner wall of the second positioning hole, the second anti-detachment part is located on the side of the side sheet metal away from the second lamp body, and the outer diameter of the second anti-detachment part is larger than the inner diameter of the second positioning hole.

[0018] In one embodiment, the gap value is 4.45 mm.

[0019] The technical solution of this utility model, by movably connecting the first bolt and the first buckle, ensures that even if the rear through light expands due to heat, the first light body will not move along with the first bolt and the first buckle. This avoids the phenomenon of easy breakage at the connection point when the first light body expands due to heat and the first bolt and the first buckle cannot move, which is common when both the first bolt and the first buckle are fixedly connected to the first light body. This also avoids the phenomenon of ineffective positioning of the first light body due to the inability to effectively position the first light body, thus preventing the rear combination light and the rear through light from being unstable and unable to maintain a small size due to the wobbling allowance caused by the inability to effectively position the first light body. Furthermore, since the travel distance of the first bolt relative to the first light body is not less than the expansion amount of the first mounting point corresponding to the first bolt, and the travel distance of the first buckle relative to the first light body is not less than the expansion amount of the first mounting point corresponding to the first buckle, even if the first light body expands due to heat, the first buckle and the first bolt can still maintain the connection with the trunk lid, that is, they can still maintain reliable positioning of the rear through light, thus ensuring that the rear combination light and the rear through light can maintain a small size. Attached Figure Description

[0020] 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.

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the vehicle lamp provided by this utility model;

[0022] Figure 2 An exploded structural diagram of an embodiment of the vehicle lamp provided by this utility model;

[0023] Figure 3 A schematic diagram of the structure of an embodiment of the vehicle lighting assembly provided by this utility model;

[0024] Figure 4 A partial structural schematic diagram of an embodiment of the vehicle lamp provided by this utility model;

[0025] Figure 5 for Figure 4 A schematic cross-sectional view at point AA;

[0026] Figure 6 for Figure 4 Cross-sectional structural diagram at BB;

[0027] Figure 7 for Figure 4 A cross-sectional view of the structure at point CC;

[0028] Figure 8 for Figure 4 Schematic diagram of the cross-sectional structure at DD;

[0029] Figure 9 for Figure 4 A cross-sectional structural diagram at EE;

[0030] Figure 10 for Figure 4 A cross-sectional view of the structure at FF;

[0031] Figure 11 for Figure 4 A cross-sectional view of the structure at point GG;

[0032] Figure 12 for Figure 4 A cross-sectional view of the structure at HH;

[0033] Figure 13A schematic diagram of the portion of the first lamp body without the first bolt installed, provided by this utility model;

[0034] Figure 14 A partial structural diagram showing the first bolt installed on the first lamp body provided by this utility model;

[0035] Figure 15 A partial structural diagram showing the first buckle installed on the first lamp body provided by this utility model;

[0036] Figure 16 A partial structural schematic diagram of the rear through-beam and rear combination lamp provided by this utility model;

[0037] Figure 17 A line graph showing the actual measured and calculated values ​​of the deformation of the rear through-lamp provided by this utility model.

[0038] Explanation of icon numbers:

[0039] 100. Vehicle light; 1. Vehicle light assembly; 11. Rear through light; 111. First lamp body; 1111. Bolt slot; 1112. First clip groove; 112. First mounting assembly; 1121. First locating pin; 1122. First bolt; 11221. First head; 11222. First stud; 1123. First clip; 11231. First circular clip; 11232. First base body; 1131. Rear through light mounting point one; 1132. Rear through light mounting point two; 1133. Rear through light mounting point three; 1134. Rear through light mounting point four; 1135. Rear through light mounting point five; 1136. Rear through light mounting point six ; 1137. Rear through light mounting point seven; 1138. Rear through light mounting point eight; 1139. Rear through light mounting point nine; 1140. Rear through light mounting point ten; 1141. Rear through light mounting point eleven; 12. Rear combination light; 121. Second light body; 1211. Mounting hole; 122. Second mounting component; 1221. Second positioning pin; 1222. Second bolt; 12221. Second head; 12222. Second stud; 1223. Second buckle; 2. Sheet metal component; 21. Luggage trunk door; 211. First positioning hole; 212. First bolt hole; 213. First clip hole; 22. Side panel sheet metal; 221. Second bolt hole.

[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, back, etc.), 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] The existing rear combination lights and rear through lights are not tightly fitted together; there is a certain gap between them. Since the rear combination lights are mounted on the side panel and the rear through lights are mounted on the trunk lid, there is also a gap between the side panel and the trunk lid. As a result, if the size of the gap between the rear combination lights and the rear through lights cannot be consistently maintained at a small size, the airtightness of the trunk will be reduced. Dust or foreign objects can easily enter the trunk through this gap, seriously affecting the user experience.

[0045] The inventors discovered that existing rear through-lights, due to their considerable length, expand significantly when heated. If the gap between the rear through-light and the rear combination light is too small, the expanded rear through-light will continue to expand upon contact with the rear combination light, potentially squeezing and damaging it. Furthermore, existing rear through-lights have multiple clips fixed to them, connecting them to the trunk lid. When the through-light expands, these clips cannot move because they are attached to the trunk lid, causing relative displacement at the connection point. Current solutions typically use the elastic deformation of the clips to accommodate this relative position, but repeated stretching causes cracks to appear at the connection point. These cracks widen, leading to a failure in the connection between the clips and the through-light, resulting in a loss of positioning capability and causing the through-light to wobble relative to the trunk lid, making it impossible to maintain a small gap with the rear combination light.

[0046] In view of this, the present invention proposes a design method for vehicle headlights and headlight gaps, aiming to solve how to stably maintain a small size between the rear combination light and the rear through light.

[0047] Please see Figures 1 to 12 In one embodiment of this utility model, the vehicle light 100 includes a vehicle light assembly 1 and a sheet metal assembly 2. The vehicle light assembly 1 includes a rear through light 11 and two rear combination lights 12. The rear through light 11 includes a first lamp body 111 and a first mounting assembly 112. The two rear combination lights 12 are respectively disposed on both sides of the first lamp body 111 along a first direction. Each rear combination light 12 includes a second lamp body 121 and a second mounting assembly 122. The distance between the end of the first lamp body 111 and the adjacent second lamp body 121 is not less than the gap value. The first direction is parallel to the length direction of the rear through light 11. The sheet metal assembly 2 includes a trunk lid 21 and side sheet metal 22. The number of side sheet metal 22 is the same as the number of rear combination lights 12 and they are disposed in a one-to-one correspondence. The first lamp body 111 is disposed on the side facing the trunk lid 21. The first mounting assembly 112 includes a first positioning pin 1121, a first bolt 1122, and a first buckle 1123, each with a first mounting point. The first positioning pin 1121, first bolt 1122, and first buckle 1123 are respectively positioned corresponding to a first mounting point. The first positioning pin 1121 is fixedly connected to the first lamp body 111. The first bolt 1122 and first buckle 1123 are movably connected to the first lamp body 111, allowing them to move relative to the first lamp body 111 along a first direction. The travel distance of the first bolt 1122 relative to the first lamp body 111 is not less than the expansion amount of the first mounting point corresponding to the first bolt 1122. The travel distance of the first bolt 1122 relative to the first lamp body 111 is d1. Figure 8As shown; the moving stroke of the first latch 1123 relative to the first lamp body 111 is not less than the expansion amount of the first mounting point corresponding to the first latch 1123, wherein the moving stroke of the first latch 1123 relative to the first lamp body 111 is d2, as shown. Figure 10 As shown; the trunk lid 21 has a first positioning hole 211, a first bolt hole 212, and a first latching hole 213. The first positioning hole 211 is for the first positioning pin 1121 to pass through, the first bolt hole 212 is for the first bolt 1122 to pass through, and the first latching hole 213 is for the first latch 1123 to pass through; the second lamp body 121 has multiple second mounting points on the side facing the side panel 22. The second mounting assembly 122 includes a second positioning pin 1221, a second bolt 1222, and a second latch 1223. The second positioning pin 1221, the second bolt 1222, and the second latch 1223 are respectively set for a second mounting point. The second bolt 1222 is fixedly connected to the second lamp body 121, and the second buckle 1223 is detachably connected to the second lamp body 121. The second buckle 1223 is movably connected to the second lamp body 121 so that the second buckle 1223 can move relative to the second lamp body 121 in a first direction. The moving stroke of the second buckle 1223 relative to the second lamp body 121 is not less than the expansion amount of the second mounting point corresponding to the second buckle 1223. The side panel sheet metal 22 is provided with a second positioning hole, a second bolt hole 221 and a second locking hole. The second positioning hole is used for the second positioning pin 1221 to pass through, the second bolt hole 221 is used for the second bolt 1222 to pass through, and the second locking hole is used for the second buckle 1223 to pass through.

[0048] The technical solution of this utility model controls the distance from the end of the first lamp body 111 to the end of the adjacent second lamp body 121 to be no less than the gap value. This ensures that there is a suitable gap for the rear through lamp 11 and the rear combination lamp 12 to expand when heated. In particular, since the length of the rear through lamp 11 is much greater than that of the rear combination lamp 12, the expansion amount of the rear through lamp 11 in the first direction is much greater than that of the rear combination lamp 12 in the first direction at the same temperature. By controlling the distance between the first lamp body 111 and the second lamp body 121 to be no less than the gap value, space is provided primarily for the expansion of the rear through lamp 11, and secondly for the expansion of the rear combination lamp 12, thus preventing the rear combination lamp 12 and the rear through lamp 11 from overlapping. The insufficient gap caused the rear combination light 12 and the rear through light 11 to break apart due to mutual compression after heating, thus ensuring that they can maintain a small size. Furthermore, the technical solution of this utility model, by movably connecting the first bolt 1122 and the first buckle 1123, ensures that even if the rear through light 11 expands due to heat, the first lamp body 111 will not move along with the first bolt 1122 and the first buckle 1123. This is because when the first lamp body 111 expands due to heat, the position of the first mounting point on the first lamp body 111 also changes. The difference between the position of the first mounting point before and after thermal expansion is the expansion amount of the first mounting point. Since the position of the first mounting point changes, the first… Both bolt 1122 and the first clip 1123 are movably connected to the first lamp body 111. This ensures that when the first mounting point moves, the first bolt 1122 and the first clip 1123 will not move together, nor will they undergo significant elastic deformation. This avoids the situation where, with the first bolt 1122 and the first clip 1123 fixedly connected to the first lamp body 111, the first lamp body 111 expands due to heat, preventing the first bolt 1122 and the first clip 1123 from moving and thus causing the connection to easily break. This also prevents the inability to effectively position the first lamp body 111 due to connection breakage, and consequently avoids the inability of the first lamp body 111 to be effectively positioned. The wobbling allowance caused by positioning makes it difficult for the rear combination light 12 and the rear through light 11 to be stably maintained at a small size. Furthermore, since the travel distance of the first bolt 1122 relative to the first light body 111 is not less than the expansion amount of the first mounting point corresponding to the first bolt 1122, and the travel distance of the first buckle 1123 relative to the first light body 111 is not less than the expansion amount of the first mounting point corresponding to the first buckle 1123, even if the first light body 111 is heated and expanded, the first buckle 1123 and the first bolt 1122 can still maintain the connection with the trunk lid 21, that is, they can still maintain the reliable positioning of the rear through light 11, thereby ensuring that the rear combination light 12 and the rear through light 11 can be maintained at a small size.

[0049] Please see Figures 13 to 15 In one embodiment, the first bolt 1122 includes a first head 11221 and a first stud 11222 connected to each other. The first lamp body 111 is provided with a bolt slot 1111, which extends along a first direction. The first head 11221 engages with the bolt slot 1111 to restrict the first bolt 1122 from moving relative to the first lamp body 111 along a second direction. The first direction and the second direction are perpendicular. The first lamp body 111 and the trunk lid 21 are arranged along the second direction. The first head 11221 is capable of moving relative to the bolt slot 1111 along the first direction. The first head 11221 engages with the bolt slot 1111, thereby restricting the movement of the first bolt 1122 relative to the first lamp body 111 along a second direction, where the second direction is the length direction of the vehicle. Furthermore, the first head 11221 can also slide within the bolt slot 1111 along a first direction. This allows the first head 11221 to adapt to the deformation of the first lamp body 111 along the first direction caused by expansion when the first lamp body 111 expands, ensuring the reliability of the connection between the first lamp body 111 and the first bolt 1122. Simultaneously, the first stud 11222 always passes through the first bolt hole 212 and is not affected by the expansion of the first lamp body 111, ensuring the reliability of the connection between the first lamp body 111 and the trunk lid 21. This also ensures that the rear combination light 12 and the rear through light 11 can maintain a relatively small size. It should be noted that the first direction is... Figure 1 The left and right directions are shown, and the second direction is... Figure 1 The front and back directions are shown.

[0050] According to one embodiment of the present invention, a first slot 1111 is provided on the first lamp body 111, and a first sliding part is formed by the inward recess in the middle of the first head 11221. The first slot 1111 and the first sliding part are slidably engaged, and the abutting parts at both ends of the first sliding part abut against the outer wall of the first slot 1111, thereby restricting the first bolt 1122 from moving relative to the first lamp body 111 in the second direction.

[0051] According to another embodiment of the present invention, a first slot 1111 is provided on the first lamp body 111. The first slot 1111 is a T-shaped sliding groove. A T-shaped slider is provided on the first head 11221 to slide in cooperation with the T-shaped sliding groove. The T-shaped sliding groove and the T-shaped slider slide in cooperation, thereby restricting the first bolt 1122 from moving relative to the first lamp body 111 in the second direction.

[0052] Please see Figure 2 and Figure 3In one embodiment, there are multiple first bolts 1122, the number of first bolt holes 212 is the same as the number of first bolts 1122 and they are arranged in a one-to-one correspondence, the number of bolt slots 1111 is the same as the number of first bolts 1122 and they are arranged in a one-to-one correspondence, the multiple first bolts 1122 are divided into a first bolt group and a second bolt group, the first bolt group includes at least two first bolts 1122 spaced apart along a first direction, the second bolt group includes at least two first bolts 1122 spaced apart along a first direction, the first bolt group and the second bolt group are respectively arranged on both sides of the first positioning pin 1121 along the first direction. By setting multiple first bolts 1122, each with a corresponding first mounting point, the strength of the connection between the rear through light 11 and the trunk lid 21 is effectively increased. Furthermore, the multiple first bolts 1122 are divided into a first bolt group and a second bolt group. A first positioning pin 1121 is located in the middle of the first light body 111, and the first bolt group and the second bolt group are located on both sides of the first positioning pin 1121 along a first direction. This makes the connection between the first light body 111 and the trunk lid 21 more stable, avoiding the phenomenon of unstable connection and easy shaking caused by only setting the first bolt 1122 on one side of the first positioning pin 1121 and the other side lacking a first bolt 1122. According to one embodiment of this utility model, the number of first bolts 1122 in the first bolt group and the second bolt group is the same, and the first bolt group and the second bolt group are symmetrically arranged relative to the first positioning pin 1121, thereby further enhancing the stability of the connection between the rear through light 11 and the trunk lid 21.

[0053] In one embodiment, a first stud 11222 is threadedly connected to a first nut. The first nut and the first head 11221 are located on opposite sides of the trunk lid 21 along a second direction, with the first direction perpendicular to the second direction. The side of the first nut facing the first head 11221 abuts against the trunk lid 21. By threading the first stud 11222 to the first nut, and by having the first nut abut against the trunk lid 21, the movement of the first stud 1122 relative to the trunk lid 21 along the second direction is restricted, thereby restricting the movement of the first lamp body 111 relative to the trunk lid 21 along the second direction.

[0054] According to one embodiment of the present invention, the first stud 11222 is threadedly connected to the first bolt hole 212 to restrict the first lamp body 111 from moving relative to the trunk door 21 in the second direction.

[0055] In one embodiment, the first buckle 1123 includes a first circular buckle 11231 and a first base body 11232 connected to each other. The first circular buckle 11231 is used to pass through a first buckle hole 213. The inner wall of the first buckle hole 213 fits against the outer wall of the first circular buckle 11231. A first buckle groove 1112 is provided on the first lamp body 111. The first buckle groove 1112 extends along a first direction. The first base body 11232 engages with the first buckle groove 1112 to restrict the first circular buckle 11231 from moving relative to the first lamp body 111 along a second direction. The first direction and the second direction are perpendicular. The first base body 11232 can move relative to the first buckle groove 1112 along the first direction. By setting the first buckle slide groove 1112 to engage with the first base body 11232, the movement of the first buckle 1123 relative to the first lamp body 111 in the second direction is restricted. When the first circular buckle 11231 is inserted into the first locking hole 213, the engagement of the first circular buckle 11231 and the first locking hole 213 restricts the movement of the first lamp body 111 relative to the trunk lid 21 in the second direction, improving the reliability of the connection between the first lamp body 111 and the trunk lid 21, and ensuring that the rear combination light 12 and the rear through light 11 can be maintained in a small size; in addition, the first base body 11232 can engage with the first buckle slide groove 11232 in the second direction. The first base body 11232 slides along the first direction within the groove 1112, so that when the first lamp body 111 expands, the first base body 11232 slides relative to the first buckle groove 1112 along the first direction to adapt to the deformation of the first lamp body 111 along the first direction caused by the expansion, thus ensuring the reliability of the connection between the first lamp body 111 and the first buckle 1123; at the same time, the first circular buckle 11231 always passes through the first buckle hole 213 and is not affected by the expansion of the first lamp body 111, thus ensuring the reliability of the connection between the first lamp body 111 and the trunk lid 21, and providing a guarantee that the rear combination light 12 and the rear through light 11 can be maintained in a small size. The first circular buckle 11231 can be configured to cooperate with the first locking hole 213 through an interference fit to restrict the movement of the first lamp body 111 relative to the trunk lid 21 in the second direction; or the first circular buckle 11231 can be an elastic element with an outer diameter larger than the inner diameter of the first locking hole 213, thereby restricting the movement of the first lamp body 111 relative to the trunk lid 21 in the second direction.

[0056] Please see Figure 11 and Figure 12In one embodiment, the second bolt 1222 includes a second head 12221 and a second stud 12222 connected to each other. The second lamp body 121 has a mounting hole 1211, and the side sheet metal 22 has a second bolt hole 221. The second head 12221 is located on the side of the second lamp body 121 away from the side sheet metal 22. The second stud 12222 passes through the mounting hole 1211 and the second bolt hole 221. A waterproof sleeve and a washer are fitted on the second stud 12222. The second stud 12222 is threadedly connected to the second nut to restrict the movement of the second lamp body 121 relative to the side sheet metal 22 in a second direction. The first direction and the second direction are perpendicular. The second lamp body 121 is connected to the side panel 22 by the threaded connection of the second bolt 1222 and the second nut, thereby restricting the movement of the second lamp body 121 relative to the side panel 22 in the second direction. The second bolt 1222 passes through the mounting hole 1211 and the second bolt hole 221 to restrict the movement of the second lamp body 121 relative to the side panel 22 in the first direction, thus improving the reliability of the connection between the side panel 22 and the second lamp body 121. By setting a waterproof gasket, external water is prevented from entering the second lamp body 121. By adding a washer, the second nut can be effectively prevented from loosening, maintaining the reliability of the threaded connection between the second nut and the second stud 12222, thereby effectively restricting the movement of the second lamp body 121 relative to the side panel 22, and ensuring that the rear combination lamp 12 and the rear through lamp 11 can be maintained in a smaller size.

[0057] In one embodiment, there are at least two second bolts 1222, and the number of mounting holes 1211 is the same as the number of second bolts 1222 and they are arranged in a one-to-one correspondence. The number of second bolt holes 221 is the same as the number of second bolts 1222 and they are arranged in a one-to-one correspondence. By providing multiple second bolts 1222, the strength of the connection between the second lamp body 121 and the side sheet metal 22 is effectively increased.

[0058] In one embodiment, the second buckle 1223 includes a second circular buckle and a second base body connected to each other. The second circular buckle is used to pass through a second locking hole. The inner wall of the second locking hole fits against the outer wall of the second circular buckle. A second buckle groove is provided on the second lamp body 121. The second buckle groove extends along a first direction. The second base body engages with the second buckle groove to restrict the movement of the second circular buckle relative to the second lamp body 121 along a second direction. The first direction and the second direction are perpendicular. The second base body can move relative to the second buckle groove along the first direction. By setting a second latching groove to engage with the second base body, the movement of the second latch 1223 relative to the second lamp body 121 along the second direction is restricted. When the second circular latch is inserted into the second locking hole, the engagement of the second circular latch and the second locking hole restricts the movement of the second lamp body 121 relative to the side sheet metal 22 along the second direction, improving the reliability of the connection between the second lamp body 121 and the side sheet metal 22, and ensuring that the rear combination lamp 12 and the rear through lamp 11 can be maintained in a smaller size. In addition, the second base body can move along the first direction within the second latching groove. The second lamp body slides in a first direction relative to the second latch groove when the second lamp body 121 expands, adapting to the deformation of the second lamp body 121 along the first direction caused by expansion. This ensures the reliability of the connection between the second lamp body 121 and the second latch 1223. Simultaneously, the second circular latch always passes through the second latch hole and is not affected by the expansion of the second lamp body 121, ensuring the reliability of the connection between the second lamp body 121 and the side sheet metal 22. This provides assurance that the rear combination lamp 12 and the rear through lamp 11 can maintain a relatively small size. The second circular latch can be configured by an interference fit with the second latch hole to restrict the movement of the second lamp body 121 relative to the side sheet metal 22 along the second direction; alternatively, the second circular latch can be an elastic element with an outer diameter larger than the inner diameter of the second latch hole, thus restricting the movement of the second lamp body 121 relative to the side sheet metal 22 along the second direction.

[0059] In one embodiment, the first positioning pin 1121 is an elastic positioning pin; the first positioning pin 1121 includes a first connecting portion, a first limiting portion, and a first anti-detachment portion connected in sequence. The first connecting portion is connected to the first lamp body 111, the outer wall of the first limiting portion fits against the inner wall of the first positioning hole 211, and the first anti-detachment portion is located on the side of the trunk lid 21 away from the first lamp body 111. The outer diameter of the first anti-detachment portion is larger than the inner diameter of the first positioning hole 211; wherein the first positioning pin 1121 is an elastic positioning pin, so that even if the first anti-detachment portion can smoothly pass through the first positioning hole 211... Then, by having an outer diameter larger than the inner diameter of the first positioning hole 211, the movement of the first lamp body 111 connected to the first positioning pin 1121 relative to the trunk tailgate 21 in the second direction is restricted. Also, because the first limiting part fits against the inner wall of the first positioning hole 211, the movement of the first lamp body 111 connected to the first positioning pin 1121 relative to the trunk tailgate 21 in the first and third directions is restricted. This effectively restricts the movement of the first lamp body 111 relative to the trunk tailgate 21, ensuring that the rear combination light 12 and the rear through light 11 can be maintained in a smaller size.

[0060] In one embodiment, the second positioning pin 1221 is an elastic positioning pin. The second positioning pin 1221 includes a second connecting part, a second limiting part and a second anti-detachment part connected in sequence. The second connecting part is connected to the second lamp body 121. The outer wall of the second limiting part fits against the inner wall of the second positioning hole. The second anti-detachment part is located on the side of the side panel 22 away from the second lamp body 121. The outer diameter of the second anti-detachment part is larger than the inner diameter of the second positioning hole. The second positioning pin 1221 is an elastic positioning pin, which allows the second anti-detachment part to pass smoothly through the second positioning hole. Its outer diameter is larger than the inner diameter of the second positioning hole, thus restricting the movement of the opposite side sheet metal 22 of the second lamp body 121 connected to the second positioning pin 1221 along the second direction. Furthermore, because the second limiting part fits against the inner wall of the second positioning hole, it restricts the movement of the opposite side sheet metal 22 of the second lamp body 121 connected to the second positioning pin 1221 along the first and third directions. This effectively restricts the movement of the opposite side sheet metal 22 of the second lamp body 121, ensuring that the rear combination lamp 12 and the rear through lamp 11 can maintain a relatively small size. It should be noted that the first positioning pin 1121, the second positioning pin 1221, the first circular buckle 11231, the second circular buckle, the first bolt 1122, the first nut, the second bolt 1222, the second nut, the washer, and the waterproof sleeve are all existing structures.

[0061] In one embodiment, the gap value is 4.45 mm. The distance between the end of the first lamp body 111 and the end of the second lamp body 121 is L, as shown below. Figure 16As shown, L can be 4.5mm. This setting not only provides space for the expansion of the rear through light 11 and the rear combination light 12, avoiding the phenomenon of the rear through light 11 and the rear combination light 12 being squeezed and causing damage to the lamps; it also makes the gap between the rear through light 11 and the rear combination light 12 smaller than the existing ones, making the overall appearance more beautiful, and also effectively improving the sealing of the suitcase.

[0062] Furthermore, the inventors discovered that the calculation formulas for the expansion of existing rear through-lights 11 and rear combination lights 12 generally use the linear expansion coefficient of the lighting fixtures provided by the manufacturers for design and calculation. For example:

[0063] The data provided by the manufacturer includes the linear expansion coefficient and linear contraction coefficient of the rear through light 11, both of which are 8×10^-5. The linear expansion coefficient and linear contraction coefficient of the rear combination light 12 are both 8×10^-5. It is known that the distance from the first reference point to the end point of the rear through light 11 is 632mm, and the distance from the first reference point to the end point of the rear combination light 12 is 117mm. The existing formulas for calculating the expansion and contraction are: expansion = expansion coefficient × distance from the first reference point to the end point × temperature difference, contraction = contraction coefficient × distance from the first reference point to the end point × temperature difference, where the temperature difference is the difference between the temperature of the lamp and the ambient temperature. Here, the ambient temperature is assumed to be 23 degrees Celsius for calculation.

[0064] The shrinkage of the rear combination lamp 12 at -30 degrees Celsius is 8×10^-5×117×(23-(-30))=0.5mm.

[0065] The expansion of the rear combination lamp 12 at 80 degrees Celsius is 8×10^-5×117×(80-23)=0.53mm.

[0066] The expansion of the rear combination lamp 12 at 50 degrees Celsius is 8×10^-5×117×(50-23)=0.25mm.

[0067] The shrinkage of the rear combination lamp 12 at 0 degrees Celsius is 8×10^-5×117×(0-(-30))=0.28mm.

[0068] The shrinkage of the rear through light 11 at -30 degrees Celsius is 8×10^-5×632×(23-(-30))=2.68mm.

[0069] The expansion of the rear through light 11 at 80 degrees Celsius is 8×10^-5×632×(80-23)=2.88mm.

[0070] The expansion of the rear through light 11 at 50 degrees Celsius is 8×10^-5×632×(50-23)=1.36mm.

[0071] The shrinkage of the rear through light 11 at 0 degrees Celsius is 8×10^-5×632×(0-(-30))=1.52mm.

[0072] Next, calculate the total deformation at the end of the lamp, where, Where A represents the positional tolerance (welding error) of the side panel sheet metal surface, B represents the positional tolerance (welding error) of the trunk rear door surface, C represents the outline tolerance of the 12 rear combination lights, and D represents the outline tolerance of the 11 rear through-beam lights. Given: the main reference gap of the rear combination lights is 0.1 mm, the main reference gap of the rear through-beam lights is 0.1 mm, the main reference gap of the side panel sheet metal is 0 mm, the main reference gap of the trunk rear door is 0 mm, the positional tolerance (welding error) of the side panel sheet metal surface is ±1.5 m², the positional tolerance (welding error) of the trunk rear door surface is ±1.5 m², and the outline tolerance of the 12 rear combination lights is ±0.7 mm. The surface contour of the rear through-light 11 is ±0.7㎡. The thermal expansion of the rear combination light is taken as the expansion of the rear combination light 12 at 80 degrees Celsius, which is 0.53mm; the expansion of the rear through-light 11 is taken as the expansion of the rear through-light 11 at 80 degrees Celsius, which is 2.88mm; the contraction of the rear combination light 12 is taken as the contraction of the rear combination light 12 at -30 degrees Celsius, which is 0.5mm; the contraction of the rear through-light 11 is taken as the contraction of the rear through-light 11 at -30 degrees Celsius, which is 2.68mm; therefore, the total deformation of the end of the lamp can be calculated as follows:

[0073] Deformation during shrinkage:

[0074]

[0075] Deformation during expansion:

[0076]

[0077] The deformation during expansion (5.95mm) is greater than the deformation during contraction (5.72mm). Therefore, the existing design slightly increases the gap between the rear combination lamp 12 and the rear through lamp 11 by a factor of 6mm, to ensure sufficient space for deformation. However, the inventors discovered that even after expansion, the rear combination lamp 12 and the rear through lamp 11 still have some gaps in actual use. This means the design is too large. Following this size would result in a large gap between the rear combination lamp 12 and the rear through lamp 11 for expansion, leading to reduced aesthetics and a compromised trunk seal. This issue was only discovered after vehicle production. The challenge lies in determining a smaller size during the initial design phase. A smaller size would result in insufficient space for expansion, potentially causing damage due to pressure between the two lamps.

[0078] After analyzing the formula for the total deformation at the end of the lamps, the inventors discovered that the main reference gaps for the rear combination lamps and the rear through lamps are both 0.1 mm, which are already at their limits. The main reference gaps for the side panel sheet metal and the trunk lid are also 0 mm, which are also at their limits. As for the positional tolerances (welding errors) of the side panel sheet metal, the trunk lid, the rear combination lamp 12, and the rear through lamp 11, these are already the limits achievable with current production technology, and it is difficult to reduce them further with current technology. Therefore, the remaining factor is the expansion of the rear combination lamp 12 and the rear through lamp 11. Analysis of the expansion calculation formula reveals three factors affecting the expansion. The first factor is the coefficient of thermal expansion, defined as a physical quantity characterizing the thermal expansion properties of an object, that is, a physical quantity characterizing the degree of increase in the length, area, and volume of an object when heated. In actual products, there are one-dimensional, two-dimensional, and three-dimensional coefficients of thermal expansion, corresponding to linear expansion coefficient, surface expansion coefficient, and volume expansion coefficient, respectively. Currently, we can only obtain the linear expansion coefficient value of the material from material suppliers or other channels such as the internet. Therefore, previous projects have used the linear expansion coefficient to calculate the value. However, car lights are not one-dimensional structures but three-dimensional structures. Therefore, using the volume expansion coefficient for calculation would theoretically better reflect the actual expansion of the car lights, and thus allow for a more accurate calculation of the gap between the rear combination lamp 12 and the rear through lamp 11.

[0079] This utility model uses a vehicle headlight gap design method to determine the gap value. The vehicle headlight gap design method specifically includes the following steps:

[0080] S100, the actual deformation of the through lamp measured at multiple different experimental temperatures;

[0081] After the rear through light 11 is placed in a constant temperature and humidity test chamber, it is installed and fixed so that the distance between the two ends of the rear through light 11 and the positioning blocks on both sides of the constant temperature chamber is not less than 3mm. The test is conducted by adjusting the constant temperature and humidity test chamber to different temperatures and measuring the distance between the end of the rear through light 11 and the positioning blocks, thereby obtaining the actual deformation of the rear through light 11 at different temperatures.

[0082] S200, calculate the theoretical deformation of the rear through-lamp at a preset temperature;

[0083] The theoretical deformation of the rear through lamp 11 at different temperatures was calculated using existing formulas.

[0084] S300, obtain the correction coefficient based on the actual deformation and the theoretical deformation at the preset temperature;

[0085] By controlling variables, the temperature is kept within a preset temperature. Correction coefficients are obtained based on the actual deformation and theoretical deformation at the preset temperature. The preset temperature can be 80 degrees Celsius or any other temperature; no restriction is imposed here.

[0086] S400, the deformation amount of the rear through-light is obtained based on the first line deformation coefficient of the rear through-light, the correction coefficient, the distance between the main reference and the end of the rear through-light, and the temperature information; the deformation amount of the rear combination light is obtained based on the second line deformation coefficient of the rear combination light, the correction coefficient, the distance between the main reference and the end of the rear combination light, and the temperature information.

[0087] By introducing a correction coefficient into the existing formula to correct the first linear deformation coefficient, making it closer to the volume deformation coefficient, the deformation amount of the rear through lamp 11 can be obtained, making the calculated deformation amount of the rear through lamp 11 closer to the volume deformation amount of the rear through lamp 11 at the preset temperature. Similarly, the correction coefficient can also be used to correct the second linear deformation coefficient of the rear combination lamp 12, making the corrected value closer to the volume deformation coefficient of the rear combination lamp 12, thereby obtaining the deformation amount of the rear combination lamp 12, making the calculated deformation amount of the rear combination lamp 12 closer to the volume deformation amount of the rear combination lamp 12 at the preset temperature.

[0088] S500, calculate the total deformation of the lamp end based on the deformation of the rear through lamp and the deformation of the rear combined lamp, manufacturing error and reference gap.

[0089] By substituting the newly calculated deformation of the rear through lamp 11 and the deformation of the rear combination lamp 12 into the existing formula for the total deformation of the lamp end, the total deformation of the lamp end can be calculated.

[0090] S600, the gap value between the rear through lamp and the rear combination lamp is obtained based on the total deformation of the lamp end.

[0091] The gap between the rear through-beam lamp 11 and the rear combination lamp 12 is designed based on the total deformation of the lamp end calculated using the corrected numerical values. This results in a smaller gap between the rear through-beam lamp 11 and the rear combination lamp 12 compared to the gap obtained through existing calculation methods. This gap also accommodates the expansion of the rear combination lamp 12 and the rear through-beam lamp 11, allowing the vehicle lamps designed using the lamp gap design method provided by this invention to stably maintain a small gap value between the rear through-beam lamp 11 and the rear combination lamp 12. It should be noted that since the rear through-beam lamp 11 and the rear combination lamp 12 are made of the same material, and both have the same coefficient of linear expansion and coefficient of volume expansion, the correction coefficient can be applied to both the rear through-beam lamp 11 and the rear combination lamp 12.

[0092] In one embodiment, the temperature information includes an expansion temperature difference and a contraction temperature difference; the deformation of the rear through-beam includes the expansion deformation and contraction deformation of the rear through-beam; the deformation of the rear combination lamp includes the expansion deformation and contraction deformation of the rear combination lamp.

[0093] The step of obtaining the deformation amount of the rear through-light based on the first line deformation coefficient of the rear through-light, the correction coefficient, the distance between the main reference and the end of the rear through-light, and temperature information includes:

[0094] S410, the expansion deformation amount of the rear through-light is obtained based on the first line deformation coefficient of the rear through-light, the correction coefficient, the distance between the reference and the end of the rear through-light, and the expansion temperature difference.

[0095] S420, the shrinkage deformation amount of the rear through-light is obtained based on the first line deformation coefficient of the rear through-light, the correction coefficient, the distance between the reference and the end of the rear through-light, and the shrinkage temperature difference.

[0096] The step of obtaining the deformation amount of the rear combination lamp based on the second line deformation coefficient of the rear combination lamp, the correction coefficient, the distance between the main reference and the end of the rear combination lamp, and the temperature information includes:

[0097] S430, the expansion deformation of the rear combination lamp is obtained based on the second line deformation coefficient of the rear combination lamp, the correction coefficient, the distance between the reference and the end of the rear combination lamp, and the expansion temperature difference.

[0098] S440, the shrinkage deformation of the rear combination lamp is obtained based on the second line deformation coefficient of the rear combination lamp, the correction coefficient, the distance between the reference and the end of the rear combination lamp, and the shrinkage temperature difference.

[0099] The deformation coefficients of the first and second lines are corrected using correction factors. Then, the expansion deformation of the rear through-light 11 is obtained based on the distance between its reference point and end point, and the expansion temperature difference. Similarly, the contraction deformation of the rear through-light 11 is obtained based on the distance between its reference point and end point, and the contraction temperature difference. The expansion deformation of the rear combination light 12 is obtained based on the distance between its reference point and end point, and the expansion temperature difference. The contraction deformation of the rear combination light 12 is also obtained based on the distance between its reference point and end point, and the contraction temperature difference. It should be noted that the expansion temperature difference is calculated with 23 degrees Celsius as the room temperature. It should also be noted that step S420 can be executed before step S410; the order of steps S410 and S420 is not restricted. Likewise, the order of steps S430 and S440 is not restricted.

[0100] In one embodiment, the total deformation at the end of the lamp includes the total expansion deformation at the end of the lamp and the total contraction deformation at the end of the lamp; step S500 includes:

[0101] S510, calculate the total expansion deformation of the lamp end based on the expansion deformation of the rear through lamp, the expansion deformation of the rear combination lamp, the manufacturing error, and the reference gap.

[0102] S520, calculate the total shrinkage deformation of the end of the lamp based on the shrinkage deformation of the rear through lamp, the shrinkage deformation of the rear combination lamp, the manufacturing error, and the reference gap.

[0103] For ease of understanding, specific experimental values ​​are used below. Measurements show that the measured deformation of the rear through-lamp 11 in the constant temperature and humidity test chamber is -1.2 mm at -30 degrees Celsius, -0.8 mm at 0 degrees Celsius, 0 mm at 23 degrees Celsius, 0.8 mm at 50 degrees Celsius, and 1.6 mm at 80 degrees Celsius. These data are plotted as a line graph; please refer to [link / reference needed]. Figure 6 Where L1 represents the expansion (contraction) data of the rear through-beam 11 calculated using existing formulas, and L2 represents the actual measured expansion (contraction) data of the rear through-beam 11. Figure 17 It can be seen that the expansion is directly proportional to the temperature; the higher the temperature, the greater the expansion. The contraction is also directly proportional to the temperature; the lower the temperature, the greater the contraction. Comparing the data calculated using existing formulas, it can be seen that the absolute values ​​of the measured expansion or contraction are less than those calculated using existing formulas for linear expansion. The slope of the curve for the measured values ​​is also less than the slope of the curve for the calculated values.

[0104] Therefore, the inventor proposed creating a correction coefficient, taking the actual expansion value of the rear through-light 11 at 80 degrees Celsius (1.6mm, hereinafter referred to as volume expansion) and the theoretical calculated value of the rear through-light 11 at 80 degrees Celsius (2.88mm, hereinafter referred to as linear expansion) to calculate the correction coefficient. Since expansion amount and expansion coefficient are directly proportional, the ratio of volume expansion amount to linear expansion amount is equal to the ratio of volume expansion coefficient to linear expansion coefficient. Therefore, the correction coefficient is the ratio of volume expansion coefficient to linear expansion coefficient, thus creating new formulas for calculating expansion and contraction. The innovative formula is as follows: Expansion deformation of the rear through lamp 11 = linear expansion coefficient of the rear through lamp 11 × correction coefficient × distance between the reference point and the end point of the rear through lamp 11 (equivalent to the distance between the first reference point and the end point in the existing formula) × expansion temperature difference (equivalent to the temperature difference in the existing formula); Contraction deformation of the rear through lamp 11 = linear expansion coefficient of the rear through lamp 11 × correction coefficient × distance between the reference point and the end point of the rear through lamp 11 (equivalent to the distance between the first reference point and the end point in the existing formula) × contraction temperature difference (equivalent to the temperature difference in the existing formula);

[0105] Specifically:

[0106] Correction factor = Volume expansion / Linear expansion = Volume expansion coefficient / Linear expansion coefficient = 1.6 / 2.88 = 0.56;

[0107] At -30 degrees Celsius, the shrinkage deformation of the rear through light 11 is 8×10^-5×0.56×632×(23-(-30))=1.5mm;

[0108] At 0 degrees Celsius, the shrinkage deformation of the rear through light 11 is 8×10^-5×0.56×632×(0-(-30))=0.85mm;

[0109] At 50 degrees Celsius, the expansion deformation of the rear through light 11 is 8×10^-5×0.56×632×(50-23)=0.76mm;

[0110] At 80 degrees Celsius, the expansion deformation of the rear through light 11 is 8×10^-5×0.56×632×(80-23)=1.61mm;

[0111] Similarly, for the rear combination lamp 12, the innovative formula is: Expansion deformation of the rear combination lamp 12 = Linear expansion coefficient of the rear combination lamp 12 × Correction coefficient × Distance between the reference point and the end point of the rear combination lamp 12 (equivalent to the distance between the first reference point and the end point in the existing formula) × Expansion temperature difference (equivalent to the temperature difference in the existing formula); Contraction deformation of the rear combination lamp 12 = Linear expansion coefficient of the rear combination lamp 12 × Correction coefficient × Distance between the reference point and the end point of the rear combination lamp 12 (equivalent to the distance between the first reference point and the end point in the existing formula) × Contraction temperature difference (equivalent to the temperature difference in the existing formula); Specifically:

[0112] At -30 degrees Celsius, the shrinkage deformation of the rear combination lamp 12 is 8×10^-5×0.56×117×(23-(-30))=0.28mm;

[0113] At 0 degrees Celsius, the shrinkage deformation of the rear combination lamp 12 is 8×10^-5×0.56×117×(0-(-30))=0.16mm;

[0114] At 50 degrees Celsius, the expansion deformation of the rear combination lamp 12 is 8×10^-5×0.56×117×(50-23)=0.14mm;

[0115] At 80 degrees Celsius, the expansion deformation of the rear combination lamp 12 is 8×10^-5×0.56×117×(80-23)=0.3mm.

[0116] In one embodiment, the reference gap is the sum of the main reference gap of the rear combination light, the main reference gap of the rear through light, the main reference gap of the side panel sheet metal, and the main reference gap of the trunk lid; the manufacturing error is equal to the square root of the sum of the surface position of the side panel sheet metal 22, the surface position of the trunk lid 21, the lamp surface profile of the rear combination light 12, and the lamp surface profile of the rear through light 11.

[0117] Next, calculate the total deformation at the end of the lamp, where the manufacturing error is equivalent to the sum of the main reference gaps for the rear combination lamp, the rear through lamp, the side panel sheet metal, and the trunk lid in the existing formula; where the manufacturing error is the sum of the main reference gaps in the existing formula.

[0118] Total expansion deformation at the end of the lamp:

[0119]

[0120] Total deformation at the end of the lamp:

[0121]

[0122] Among them, the total expansion deformation of the lamp end is greater than the total contraction deformation of the lamp end. According to the gap setting principle, the gap between the rear combination lamp 12 and the rear through lamp 11 should be greater than the maximum total end movement, that is, greater than the largest of the two: the total expansion deformation of the lamp end and the total contraction deformation of the lamp end. Since the total expansion deformation of the lamp end is greater than the total contraction deformation of the lamp end, the gap value is taken as 4.45mm. The gap between the rear combination lamp 12 and the rear through lamp 11 is not less than the gap value, so the gap between the rear combination lamp 12 and the rear through lamp 11 can be set to 4.5mm.

[0123] The inventors discovered that, since both the first bolt 1122 and the first buckle 1123 are movably connected to the first lamp body 111, their travel is closely related to the expansion amount of the first mounting point, directly determining the reliability of the movable connection. For example, if the expansion amount of the first mounting point is greater than the travel of the first bolt 1122, the first bolt 1122 will be unable to move relative to the first lamp body 111 due to its limited travel after the first mounting point expands and deforms. This causes the expanded first lamp body 111 to squeeze the first bolt 1122, which in turn causes the connection between the first lamp body 111 and the first bolt 1122 to deform or even be damaged due to the squeezing. Therefore, the design of the expansion amount of the first mounting point is also crucial. Similarly, the calculation of the expansion amount of the second mounting point is also crucial.

[0124] In one embodiment, step S600 is followed by the following step:

[0125] S700, obtain the first deformation amount of each first mounting point on the rear through light, and obtain the second deformation amount of each second mounting point on the rear combination light.

[0126] In one embodiment, the step of obtaining the first deformation amount of each first mounting point on the rear through light includes:

[0127] S710, obtain the first expansion amount of each first mounting point on the rear through light;

[0128] S720, the first deformation amount of each first mounting point on the rear through light is obtained based on the first reference gap of each component of the rear through light, the first position degree of each first mounting point, and the first expansion amount of each first mounting point.

[0129] The step of obtaining the second deformation amount of each second mounting point on the rear combination lamp includes:

[0130] S730, obtain the second expansion amount of each second mounting point on the rear combination lamp;

[0131] S740, the second deformation amount of each second mounting point on the rear combination lamp is obtained based on the second reference gap of each component of the rear combination lamp, the second position degree of each second mounting point, and the second expansion amount of each second mounting point on the rear combination lamp.

[0132] In one embodiment, step S710 includes:

[0133] S711, the first expansion amount of each first mounting point on the rear through light is obtained based on the first line deformation coefficient of the rear through light, the correction coefficient, the first distance from each first mounting point to the main reference of the rear through light, and the expansion temperature difference.

[0134] The step of obtaining the second expansion amount of each second mounting point on the rear combination lamp includes:

[0135] S731, the second expansion amount of each second mounting point on the rear combination lamp is obtained based on the second line deformation coefficient of the rear combination lamp, the correction coefficient, the second distance from each second mounting point to the main reference of the rear combination lamp, and the expansion temperature difference.

[0136] Specifically, the first mounting point corresponding to the first positioning pin 1121 on the rear through-light 11 is defined as rear through-light mounting point one 1131. There are multiple first bolts 1122, and the first mounting points corresponding to these multiple first bolts 1122 are defined as rear through-light mounting point four 1134, rear through-light mounting point five 1135, rear through-light mounting point six 1136, rear through-light mounting point seven 1137, rear through-light mounting point eight 1138, rear through-light mounting point nine 1139, rear through-light mounting point ten 1140, and rear through-light mounting point eleven 1141. There are two first clips 1123, and the first mounting points corresponding to the two first clips 1123 are designated as rear through-light mounting point two 1132 and rear through-light mounting point three 1133, respectively. The rear through-light mounting points two 1132 and rear through-light mounting point three 1133 are relative to rear through-light mounting point one 1131. The rear through light mounting points 1134 and 1135 are symmetrically positioned relative to the rear through light mounting point 1131; the rear through light mounting points 1136 and 1137 are symmetrically positioned relative to the rear through light mounting point 1131; the rear through light mounting points 1138 and 1139 are symmetrically positioned relative to the rear through light mounting point 1131; the rear through light mounting points 1140 and 1141 are symmetrically positioned relative to the rear through light mounting point 1131; among them, the rear through light mounting point 1131 is the first reference of the rear through light 11, which is set as an LWH direction reference, where L is the length direction of the vehicle (i.e., the second direction), W is the width direction of the vehicle (i.e., the first direction), and H is the height direction of the vehicle.Rear through light mounting point 2 1132 is the second reference for rear through light 11, and the second reference for rear through light 11 is set as an LH-direction reference. Rear through light mounting point 3 1133 is the third reference for rear through light 11, and the third reference for rear through light 11 is set as an LH-direction reference. Rear through light mounting point 4 1134 is the fourth reference for rear through light 11, and the fourth reference for rear through light 11 is set as an L-direction reference. Rear through light mounting point 5 1135 is the fifth reference for rear through light 11, and the fifth reference for rear through light 11 is set as an L-direction reference. Rear through light mounting point 6 1136 is the sixth reference for rear through light 11, and the sixth reference for rear through light 11 is set as an L-direction reference. Rear through light mounting point 7 1137 is the seventh reference for rear through light 11, and the seventh reference for rear through light 11 is set as an L-direction reference. The following parameters are defined: Rear through light mounting point 8 (1138) is the 8th reference for rear through light 11, and the 8th reference for rear through light 11 is set as the L-direction reference; Rear through light mounting point 9 (1139) is the 9th reference for rear through light 11, and the 9th reference for rear through light 11 is set as the L-direction reference; Rear through light mounting point 10 (1140) is the 10th reference for rear through light 11, and the 10th reference for rear through light 11 is set as the L-direction reference; Rear through light mounting point 11 (1141) is the 11th reference for rear through light 11, and the 11th reference for rear through light 11 is set as the L-direction reference; A calculation formula for calculating the expansion amount of each first mounting point is created: Expansion amount of the first mounting point = linear expansion coefficient × correction coefficient × distance from the first mounting point to rear through light mounting point 1131 × temperature difference; The specific calculation is as follows:

[0137] At 80 degrees Celsius,

[0138] The expansion amount of the rear through light installation point 1131 = 8 × 10^-5 × 0.56 × 0 × (80 - 23) = 0 mm;

[0139] The expansion amount of the rear through light mounting point 4 1134 or rear through light mounting point 5 1135 = 8 × 10^-5 × 0.56 × 100 × (80 - 23) = 0.26 mm;

[0140] The expansion amount of the rear through light mounting point 6 1136 or rear through light mounting point 7 1137 = 8 × 10^-5 × 0.56 × 229 × (80 - 23) = 0.58 mm;

[0141] The expansion amount of the rear through light mounting point 81138 or rear through light mounting point 91139 = 8 × 10^-5 × 0.56 × 357 × (80 - 23) = 0.91 mm;

[0142] The expansion amount of the rear through light mounting point 1140 or the rear through light mounting point 1141 is 8×10^-5×0.56×485×(80-23)=1.24mm;

[0143] The expansion amount of the rear through light mounting point 2 1132 or rear through light mounting point 3 1133 = 8×10^-5×0.56×562×(80-23)=1.44mm;

[0144] Then calculate the deformation of each first mounting point, wherein the first reference gap of each component of the rear through light 11 = the main reference gap of the rear through light 11 (known to those skilled in the art) + the main reference gap of the trunk tailgate (known to those skilled in the art); Where E is the positional tolerance of the first mounting point (welding error, known to those skilled in the art), and F is the positional tolerance of the first mounting hole 1211 of the trunk lid 21 corresponding to the first mounting point (Note: the first mounting hole 1211 is a general term for all holes on the trunk lid 21, meaning that all holes on the trunk lid 21 can be called the first mounting hole 1211. According to the different categories of parts inserted into the first mounting hole 1211, the first mounting hole 1211 is further divided into the first positioning hole 211, the first bolt hole 212, and the first locking hole 213). For example, if it is the through light mounting point 1131, it corresponds to the first positioning pin 1121, and the first positioning pin 1121 corresponds to the first positioning hole 211, then F is the positional tolerance of the first positioning hole 211 on the trunk lid 21 corresponding to the through light mounting point 1131; a calculation formula for calculating the deformation of each first mounting point is created: the first reference gap of each component of the rear through light 11 + the first positional tolerance of the first mounting point + the expansion of the first mounting point; specifically:

[0145] At 80 degrees Celsius,

[0146]

[0147] Similarly, the second mounting point corresponding to the second positioning pin 1221 of the rear combination lamp 12 is defined as rear combination lamp mounting point one 1131. There are two second bolts 1222 on each rear combination lamp 12, and the second mounting points corresponding to these two second bolts 1222 are defined as rear combination lamp mounting point two 1132 and rear combination lamp mounting point four 1134, respectively. The second mounting point corresponding to the second clip 1223 of the rear combination lamp 12 is defined as rear combination lamp mounting point three 1133. Mounting point 1131 is the first reference for the rear combination lamp 12, set as an LWH direction reference; mounting point 1132 is the second reference for the rear combination lamp 12, set as an LW direction reference; mounting point 1133 is the third reference for the rear combination lamp 12, set as a WH direction reference; mounting point 1134 is the fourth reference for the rear combination lamp 12, set as an LH direction reference. A formula is created to calculate the expansion amount of each second mounting point: Expansion amount of the second mounting point = linear expansion coefficient × correction coefficient × distance from the second mounting point to mounting point 1131 of the rear combination lamp × temperature difference; the specific calculation is as follows:

[0148] At 80 degrees Celsius,

[0149] The expansion amount of the rear combination lamp mounting point 1131 = 8 × 10^-5 × 0.56 × 0 × (80 - 23) = 0 mm;

[0150] The expansion amount at mounting point 3133 of the rear combination lamp is 8×10^-5×0.56×72×(80-23)=0.18mm;

[0151] The expansion amount at mounting point 4134 of the rear combination lamp is 8×10^-5×0.56×98×(80-23)=0.25mm;

[0152] The expansion amount of the rear combination lamp mounting point 2 1132 = 8×10^-5×0.56×144×(80-23)=0.37mm.

[0153] Then calculate the deformation of each second mounting point, where the second reference gap of each component = the main reference gap of the rear combination lamp (known to those skilled in the art) + the main reference gap of the side panel sheet metal (known to those skilled in the art); each of the above G represents the positional tolerance of the second mounting point (welding error, known to those skilled in the art), and H represents the positional tolerance of the second mounting hole 1211 on the side sheet metal 22 corresponding to the second mounting point (Note: the second mounting hole 1211 is a general term for all holes on the side sheet metal 22, meaning that all holes on the side sheet metal 22 can be called the second mounting hole 1211. According to the different types of parts inserted into the second mounting hole 1211, the second mounting hole 1211 is further divided into the second positioning hole, the second bolt hole 221, and the second locking hole). For example, if the rear combination lamp mounting point 1131 corresponds to the second positioning pin 1221, and the second positioning pin 1221 corresponds to the second positioning hole, then H is the positional tolerance of the second positioning hole on the side sheet metal 22 corresponding to the rear combination lamp mounting point 1131; a calculation formula for calculating the deformation of each second mounting point is created: the second reference gap of each component of the rear combination lamp 12 + the second positional tolerance of the second mounting point + the expansion amount of the second mounting point; specifically:

[0154] At 80 degrees Celsius,

[0155]

[0156] By calculating the deformation of each mounting point of the rear through light 11 and the rear combination light 12, the sliding stroke of the first bolt 1122 relative to the first light body 111, the sliding stroke of the first buckle 1123 relative to the first light body 111, and the sliding stroke of the second buckle 1223 relative to the second light body 121 are reasonably set. This ensures that the rear through light 11 can be stably installed on the trunk lid 21, and that the rear combination light 12 can be stably installed on the side panel sheet metal 22. In addition, it ensures that the rear combination light 12 and the rear through light 11 maintain a small size.

[0157] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection 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 scope of protection of the present utility model.

Claims

1. A vehicle light, characterized in that, include: The vehicle lighting assembly includes a rear through light and two rear combination lights. The rear through light includes a first lamp body and a first mounting assembly. The two rear combination lights are respectively disposed on both sides of the first lamp body along a first direction. Each rear combination light includes a second lamp body and a second mounting assembly. The distance between the end of the first lamp body and the adjacent second lamp body is not less than the gap value. The first direction is parallel to the length direction of the rear through light. Sheet metal components, including trunk tailgate and side panel sheet metal, wherein the number of side panel sheet metal is the same as the number of rear combination lights and they are set one-to-one; The first lamp body has multiple first mounting points on the side facing the trunk lid. The first mounting assembly includes a first positioning pin, a first bolt, and a first clip. The first positioning pin, the first bolt, and the first clip are each corresponding to a first mounting point. The first positioning pin is fixedly connected to the first lamp body, and the first bolt and the first clip are movably connected to the first lamp body so that the first bolt and the first clip can move relative to the first lamp body along the first direction. The movement distance of the first bolt relative to the first lamp body is not less than the expansion amount of the first mounting point corresponding to the first bolt. The movement distance of the first clip relative to the first lamp body is not less than the expansion amount of the first mounting point corresponding to the first clip. The trunk lid has a first positioning hole, a first bolt hole, and a first clip hole. The first positioning hole is for the first positioning pin to pass through, the first bolt hole is for the first bolt to pass through, and the first clip hole is for the first clip to pass through. The second lamp body has multiple second mounting points on the side facing the side panel sheet metal. The second mounting assembly includes a second positioning pin, a second bolt, and a second clip. The second positioning pin, the second bolt, and the second clip are respectively provided for one of the second mounting points. The second positioning pin is fixedly connected to the second lamp body, the second bolt is detachably connected to the second lamp body, and the second clips are movably connected to the second lamp body so that the second clips can move relative to the second lamp body in the first direction. The movement stroke of the second clips relative to the second lamp body is not less than the expansion amount of the second mounting point corresponding to the second clips. The side panel sheet metal has a second positioning hole, a second bolt hole, and a second clip hole. The second positioning hole is for the second positioning pin to pass through, the second bolt hole is for the second bolt to pass through, and the second clip hole is for the second clip to pass through.

2. The vehicle light as described in claim 1, characterized in that, The first bolt includes a first head and a first stud connected to each other. The first lamp body is provided with a bolt slot, which extends along the first direction. The first head engages with the bolt slot to restrict the first bolt from moving relative to the first lamp body along the second direction. The first direction and the second direction are perpendicular. The first lamp body and the trunk lid are arranged along the second direction. The first head is capable of moving relative to the bolt slot along the first direction.

3. The vehicle light as described in claim 2, characterized in that, The number of the first bolts is multiple, the number of the first bolt holes is the same as the number of the first bolts and they are set one-to-one, the number of the bolt slots is the same as the number of the first bolts and they are set one-to-one, the multiple first bolts are divided into a first bolt group and a second bolt group, the first bolt group includes at least two first bolts spaced apart along the first direction, the second bolt group includes at least two first bolts spaced apart along the first direction, the first bolt group and the second bolt group are respectively arranged on both sides of the first positioning pin along the first direction.

4. The vehicle light as described in claim 2, characterized in that, The first stud is threadedly connected to the first nut. The first nut and the first head are located on opposite sides of the trunk door along the second direction. The first direction is perpendicular to the second direction. The side of the first nut facing the first head abuts against the trunk door.

5. The vehicle light as described in claim 1, characterized in that, The first buckle includes a first circular buckle and a first base body connected to each other. The first circular buckle is used to pass through the first buckle hole. The inner wall of the first buckle hole fits against the outer wall of the first circular buckle. A first buckle groove is provided on the first lamp body. The first buckle groove extends along the first direction. The first base body engages with the first buckle groove to restrict the first circular buckle from moving relative to the first lamp body along the second direction. The first direction and the second direction are perpendicular. The first base body can move relative to the first buckle groove along the first direction.

6. The vehicle lamp as described in any one of claims 1 to 5, characterized in that, The second bolt includes a second head and a second stud connected to each other. The second lamp body has a mounting hole. The second head is located on the side of the second lamp body away from the side panel sheet metal. The second stud passes through the mounting hole and the second bolt hole. A waterproof sleeve and a washer are fitted on the second stud. The second stud is threadedly connected to a second nut to restrict the movement of the second lamp body relative to the side panel sheet metal in a second direction. The first direction and the second direction are perpendicular.

7. The vehicle light as described in claim 6, characterized in that, The number of the second bolts is at least two, the number of mounting holes is the same as the number of the second bolts and they are set one-to-one, and the number of the second bolt holes is the same as the number of the second bolts and they are set one-to-one.

8. The vehicle lamp as described in any one of claims 1 to 5, characterized in that, The second buckle includes a second circular buckle and a second base body that are connected to each other. The second circular buckle is used to pass through the second buckle hole. The inner wall of the second buckle hole fits against the outer wall of the second circular buckle. A second buckle groove is provided on the second lamp body. The second buckle groove extends along the first direction. The second base body engages with the second buckle groove to restrict the movement of the second circular buckle relative to the second lamp body along the second direction. The first direction and the second direction are perpendicular. The second base body can move relative to the second buckle groove along the first direction.

9. The vehicle lamp as described in any one of claims 1 to 5, characterized in that, The first positioning pin is an elastic positioning pin; the first positioning pin includes a first connecting part, a first limiting part and a first anti-detachment part connected in sequence, the first connecting part is connected to the first lamp body, the outer wall of the first limiting part is in contact with the inner wall of the first positioning hole, the first anti-detachment part is located on the side of the trunk door away from the first lamp body, and the outer diameter of the first anti-detachment part is larger than the inner diameter of the first positioning hole. And / or, the second positioning pin is an elastic positioning pin, the second positioning pin includes a second connecting part, a second limiting part and a second anti-detachment part connected in sequence, the second connecting part is connected to the second lamp body, the outer wall of the second limiting part is fitted with the inner wall of the second positioning hole, the second anti-detachment part is located on the side of the side sheet metal away from the second lamp body, and the outer diameter of the second anti-detachment part is larger than the inner diameter of the second positioning hole.

10. The vehicle lamp as described in any one of claims 1 to 5, characterized in that, The gap value is 4.45 mm.

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