Fixing cracking prevention structure and vehicle lamp

Abstract

The utility model belongs to a mechanical connection structure, and provides a fixing cracking prevention structure which comprises a body and an insert. Wherein the body is made of a plastic material; the insert is embedded in the body, exposed areas which are not shielded by the body are formed on the surfaces of the front side and the back side of the insert, through mounting holes are formed in the exposed areas of the insert, and the ductility of the insert is superior to that of the body. The utility model further provides an automobile lamp. The automobile lamp comprises the fixing cracking prevention structure. The insert with the ductility superior to that of the plastic body is embedded in the body, and the exposed areas are formed on the front side and the back side of the insert, so that the high ductility of the insert can be utilized to preferentially generate elastic deformation in the nailing process to absorb impact energy, and cracking caused by direct bearing of concentrated stress on the brittle plastic body is avoided; and meanwhile, the arrangement of the exposed area ensures that the nailing force directly acts on the insert instead of the plastic body, so that the technical problem that a traditional plastic part is easy to crack during nailing is effectively solved while the advantage of light weight of the plastic body is kept.

Description

Technical Field

[0001] This application belongs to the field of mechanical connection structures, and particularly relates to a structure for preventing fixed cracking and a vehicle lamp. Background Technology

[0002] In the connection of plastic parts, nailing (such as screws and rivets) is often used for fixing. However, plastic is a relatively brittle material, and stress concentration during nailing can easily lead to cracking, especially in high-frequency vibration environments (such as automotive lights). Existing technologies improve strength by increasing the thickness of the plastic or by adding local reinforcing ribs, but this increases the volume and does not fundamentally solve the cracking problem.

[0003] Therefore, it is necessary to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this application is to provide a structure and vehicle light that prevents cracking during fixing, so as to solve the technical problem that vehicle lights are prone to cracking when nailed in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] On one hand, a structure for preventing fixing cracks is provided, including a body and an insert. The body is made of plastic; the insert is embedded in the body and forms exposed areas on both its front and back surfaces that are not obscured by the body. The insert forms through mounting holes in the exposed areas, and the insert has better ductility than the body.

[0007] Compared with the prior art, the beneficial effect of the anti-fixing crack structure in this application is that by embedding an insert with better ductility than the plastic body onto the body and forming exposed areas on both sides, the high ductility of the insert can be used to preferentially undergo elastic deformation during nailing to absorb impact energy, avoiding the brittle plastic body from directly bearing concentrated stress and causing cracking. At the same time, the setting of the exposed area ensures that the nailing force is directly applied to the insert rather than the plastic body, thereby effectively solving the technical problem of easy cracking of traditional plastic parts during nailing while maintaining the lightweight advantage of the plastic body, which is far superior to the prior art.

[0008] Optionally, at least one edge of the insert is serrated. In this design, by providing a serrated structure on at least one edge of the insert, the concave-convex shape of the serrations significantly increases the contact area and interface complexity between the insert and the plastic body. This allows the molten plastic to fully fill the gaps between the serrations and form a mechanically interlocking structure during injection molding. When radial stress is generated during nailing, the geometric features of the serrated edges can decompose the concentrated stress into multi-directional dispersed stress, effectively suppressing the linear transmission path of stress in the plastic body. Simultaneously, the interlocking action of the serrations prevents relative displacement between the insert and the body, further reducing the risk of cracking in the plastic body during nailing.

[0009] Optionally, the serrated shape formed by the insert at its edge is symmetrical about the geometric center of the mounting hole. In this design, by setting the serrated shape of the insert edge to be symmetrical about the geometric center of the mounting hole, not only can local stress concentration caused by asymmetrical structures be avoided, but the symmetrical serrated structure also ensures that the plastic melt uniformly fills the insert edge from all directions during injection molding, forming a balanced mechanical interlocking effect and preventing weak bonding areas caused by uneven filling. This further reduces the risk of cracking of the plastic body during nailing.

[0010] Optionally, the body is integrally injection molded onto the insert, and the insert has pre-set through holes for the body to fill. In this design, the pre-set through holes on the insert allow molten plastic to penetrate during injection molding and form a through-type mechanical interlocking structure after cooling and solidification. This structure creates anchor points for the plastic body within the insert, significantly improving the bonding strength between the insert and the body. When subjected to nailing impact or vibration loads, the plastic pillars within the through holes effectively prevent relative displacement between the insert and the body, and uniformly transmit stress throughout the entire plastic body through a three-dimensional network structure. This also helps to further reduce the risk of cracking of the plastic body during nailing.

[0011] Optionally, the through holes are axially parallel to the mounting holes and symmetrically arranged about the central axis of the mounting holes. In this design, the symmetrical parallel arrangement of the through holes ensures uniform filling of the plastic melt within the through holes during injection molding, avoiding localized stress concentration in the body due to asymmetrical filling. When fasteners such as screws are driven into the mounting holes, the parallel relationship between the through holes and the mounting holes allows the plastic body to provide consistent support along the axial direction of the mounting holes. The symmetrically distributed through hole structure forms a uniform stress ring around the mounting holes, effectively suppressing the radial cracking tendency of the body and further reducing the risk of cracking of the plastic body during screw driving.

[0012] Optionally, the anti-fixing cracking structure further includes an object member for connecting to the body; the object member has a protrusion that can abut against the insert axially, and the protrusion has a connecting hole for engaging with the mounting hole, the connecting hole being coaxially arranged with the protrusion. In this solution, the protrusion formed on the object member can directly abut against the exposed area of ​​the insert axially. This connecting hole, which directly engages with the mounting hole, ensures that the axial load during nailing can be directly transferred from the protrusion to the insert with better ductility, thereby effectively avoiding the plastic body bearing the main connection stress. In addition, the surface contact between the protrusion and the insert significantly increases the stress-bearing area, so the parts on the protrusion and insert used for connecting with fasteners can withstand less pressure, thereby further reducing the risk of cracking of the plastic body during nailing.

[0013] Optionally, a through hole is formed on the body for the protrusion to fit through and abut against the insert. In this design, the precise fit between the through hole and the protrusion effectively limits the radial displacement of the protrusion, eliminating wobbling gaps during assembly. Furthermore, the plastic material around the through hole generates a uniform clamping force on the insert. This design ensures assembly stability between the body and the object, while also strengthening the connection between the insert and the plastic body. This allows the overall connection structure to more fully utilize the insert's ductility when subjected to nailing impacts, thus more effectively preventing cracking of the plastic body.

[0014] Optionally, multiple protrusions are formed on the object to abut against the same insert. In this design, by providing multiple protrusions on the object abutting against the same insert, the force applied during nailing can be evenly distributed to the insert surface through multiple contact points. This not only significantly reduces stress concentration at individual connection points but also creates a stable force couple balance on the insert through the synergistic action of the multiple protrusions. This design allows the plastic body to be completely isolated from the main stress-bearing components, thereby further reducing the risk of cracking of the plastic body during nailing.

[0015] Optionally, the insert is made of a rust-resistant metal. By using a rust-resistant metal material for the insert, this solution not only ensures the anti-cracking structure maintains stable mechanical properties in humid or corrosive environments, but also prevents expansion stress caused by corrosion products at the interface between the insert and the plastic body. This fundamentally avoids stress concentration cracking in the plastic body caused by metal corrosion, thereby further reducing the risk of cracking during nailing.

[0016] On the other hand, this application also provides a vehicle lamp having any of the anti-fixation cracking structures described above. Since the vehicle lamp provided in this solution has the anti-fixation cracking structure described in any of the aforementioned solutions, it also has the same technical effect as each of the anti-fixation cracking structures, and will not be elaborated further here. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the anti-fixation cracking structure in the embodiments of this application;

[0019] Figure 2This is a schematic diagram of the overall structure of the insert in the embodiments of this application.

[0020] Figure 3 This is a schematic diagram of the overall structure of the anti-fixation cracking structure in another embodiment of this application;

[0021] Figure 4 for Figure 3 Explosion-proof structural diagram of the anti-cracking fixed structure;

[0022] Figure 5 for Figure 3 A cross-sectional schematic diagram of the anti-cracking structure.

[0023] The following are the labeling elements in the figure:

[0024] 100, Body; 101, Through hole; 200, Insert; 201, Mounting hole; 202, Through hole; 300, Object part; 301, Protrusion; 302, Connecting hole; 400, Screw. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] Please refer to the following: Figure 1 and Figure 2 The present application provides a description of an anti-cracking structure for nail fixing according to an embodiment. This anti-cracking structure includes a body 100 and an insert 200. Wherein:

[0030] The body 100 is made of plastic. The insert 200 is embedded in the body 100, forming exposed areas on both its front and back surfaces that are not covered by the body 100. The insert 200 forms through mounting holes 201 in these exposed areas, and its ductility is superior to that of the body 100. In this embodiment, the body 100 can be made of commonly used plastic materials in the art. When used in automotive lighting to prevent nail cracking, the body 100 can be a plastic lamp housing or similar structure. The ductility described in this embodiment is a mechanical property of a material, representing its ability to plastically deform before fracture under stress. When the body 100 is made of commonly used plastics such as polyethylene, polypropylene, and polyvinyl chloride, the insert 200 can be made of materials with superior ductility to plastics, such as iron, copper, aluminum, or steel. Furthermore, the shape and size of the exposed areas and mounting holes 201 formed on the insert 200 are not limited. In practice, the shape and size of the exposed area and the mounting hole 201 can be flexibly determined according to the available space at the target location. In this embodiment, the fastener used to drive the mounting hole 201 can be a bolt or screw 400, which are commonly used in the art. For ease of explanation, this embodiment uses a screw 400 as an example.

[0031] According to the structure provided in this embodiment, by embedding the insert 200, which has better ductility than the plastic body 100, into the body 100 and forming exposed areas on both sides, the high ductility of the insert 200 can be used to preferentially undergo elastic deformation during nailing to absorb impact energy, thus avoiding the brittle plastic body 100 from directly bearing concentrated stress and cracking. At the same time, the setting of the exposed areas ensures that the nailing force is directly applied to the insert 200 rather than the plastic body 100. Thus, while maintaining the lightweight advantage of the plastic body 100, it effectively solves the technical problem of easy cracking of traditional plastic parts during nailing, which is far superior to the existing technology.

[0032] It is understood that in some modified embodiments of this example, one or more inserts 200 may be connected to the body 100, and one or more mounting holes 201 may be provided on the insert 200. Furthermore, the connection method between the insert 200 and the body 100 includes various methods such as adhesive bonding or integral injection molding, which will not be elaborated upon here. It should be noted that in some embodiments where the anti-nail-driving cracking effect is poor, the insert 200 may also be configured to form an exposed area on one side of the body 100. In this way, when the screw 400 passes through the insert 200, it also needs to pass through the body 100. Since the insert 200 can also absorb nail-driving force to a certain extent in these embodiments, it can also play a role in preventing nail-driving cracking of the body 100 to a certain extent.

[0033] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 1 and Figure 2 At least one edge of the insert 200 is serrated. In this embodiment, the shape of the serrations formed on the edge of the insert 200 is not limited. In specific implementations, the serration shape can be selected as a rectangle, square, triangle, or polygon commonly used in the art. For ease of explanation, this embodiment uses a rectangular serration shape as an example.

[0034] According to the structure provided in this embodiment, the concave and convex shape of the serrations can significantly increase the contact area and interface complexity between the insert 200 and the plastic body 100. In this way, the molten plastic can fully fill the gaps between the serrations and form a mechanical interlocking structure when the body 100 is injection molded. When radial stress is generated during the nailing process, the geometric features of the serration edge can decompose the concentrated stress into multi-directional dispersed stress, effectively suppressing the linear transmission path of stress in the plastic body 100. At the same time, the interlocking action of the serrations can prevent relative displacement between the insert 200 and the body 100, which helps to further reduce the risk of cracking of the plastic body 100 during nailing.

[0035] It is understood that in this embodiment, the serrated edge of at least one side of the insert 200 indicates that in the anti-nail fixing cracking structure provided in this embodiment, the insert 200 can form two or more sets of serrated structures along the direction of its edge contour. In embodiments where the insert 200 is configured as a rectangular structure, please refer to... Figure 1 and Figure 2 The four edges of the insert 200 can be serrated, which helps to further improve the connection strength between the insert 200 and the body 100. Of course, in embodiments where the insert 200 is set as other polygons such as pentagons or hexagons, the edges of the insert 200 can form more sets of serrated structures. Further details will not be elaborated here.

[0036] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 1and Figure 2 The serrated shape formed by the insert 200 at its edge is symmetrical about the geometric center of the mounting hole 201. For ease of explanation, this embodiment uses a circular hole as the mounting hole 201 and a rectangular structure with serrated edges on all four sides as an example.

[0037] According to the structure provided in this embodiment, by setting the serrated shape of the edge of the insert 200 to be symmetrical about the geometric center of the mounting hole 201, this solution can not only avoid local stress concentration caused by the asymmetrical structure, but also ensure that the plastic melt fills the edge of the insert 200 evenly from all directions during injection molding, forming a balanced mechanical interlocking effect and preventing weak bonding areas caused by uneven filling. This is beneficial to further reduce the risk of cracking of the plastic body 100 when nailing.

[0038] It is understood that when the insert 200 is set as a circular structure in this embodiment, its circumferential edge can be provided with radially distributed triangular serrations, and all serrations are symmetrically distributed with the center of the mounting hole 201 as the center. When the insert 200 is set as a rectangular structure, the size of the serrations can be scaled proportionally with the size of the insert 200, so that the serrations formed on opposite sides of the insert 200 can be set in the same direction and perpendicular to the serrations formed on adjacent sides. When the insert 200 adopts a regular hexagonal shape, each side of the insert 200 can be provided with equally spaced trapezoidal serrations. These shapes of insert 200 can utilize their geometric characteristics to form a better connection stability with the body 100. In specific implementation, they can be flexibly selected according to design needs, which will not be elaborated here.

[0039] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 1 and Figure 2 The main body 100 is integrally injection molded onto the insert 200, and the insert 200 has a pre-set through hole 202 for filling the main body 100. In this embodiment, the shape of the through hole 202 is not limited, and can be selected as a rectangular hole, square hole, round hole, or polygonal hole commonly used in the art. For ease of explanation, this embodiment takes a circular through hole 202 as an example.

[0040] According to the structure provided in this embodiment, the pre-set through hole 202 on the insert 200 allows the molten plastic to penetrate during the injection molding process and form a through-type mechanical interlocking structure after cooling and solidification. This structure makes the plastic body 100 form an anchor point inside the insert 200, which greatly improves the bonding strength between the insert 200 and the body 100. When subjected to nailing impact or vibration load, the plastic column in the through hole 202 can effectively prevent the relative displacement between the insert 200 and the body 100, and uniformly transmit the stress to the entire plastic body 100 through the three-dimensional network structure. This also helps to further reduce the risk of cracking of the plastic body 100 when nailing.

[0041] It is understood that in this embodiment, the insert 200 can have multiple pre-set through holes 202, thus forming multiple anchoring points within the insert 200 and the body 100, which helps to further increase the connection strength between the insert 200 and the body 100. It should also be noted that in embodiments with multiple through holes 202, the through holes 202 can be spaced apart or interconnected to form elongated, waist-shaped holes. This allows the through holes 202 to provide further support to the insert in the target direction, which also helps to further reduce the risk of cracking of the plastic body 100 during nailing. Of course, in other embodiments of this application, the surface of the insert 200 used for bonding with the body 100 can also be roughened by sandblasting or other methods to achieve a better bonding effect.

[0042] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 1 and Figure 2 The axial direction of the through hole 202 is parallel to that of the mounting hole 201 and is symmetrical about the central axis of the mounting hole 201.

[0043] According to the structure provided in this embodiment, the symmetrical parallel layout of the through holes 202 ensures the uniformity of the filling of the plastic melt in the through holes 202 during injection molding, avoiding local stress concentration in the body 100 due to asymmetrical filling. When fasteners such as screws 400 are driven into the mounting holes 201, the parallel relationship between the through holes 202 and the mounting holes 201 can provide a consistent support force to the plastic body 100 along the axial direction of the mounting holes 201. The symmetrically distributed through hole 202 structure forms a uniform stress ring around the mounting holes 201, which can effectively suppress the radial cracking tendency of the body 100, and thus also help to further reduce the risk of cracking of the plastic body 100 when nailing.

[0044] It is understood that in this embodiment, at least one through hole 202 needs to be provided on each side of the mounting hole 201 to form a symmetrical layout of the through holes 202. In embodiments where two or more mounting holes 201 are provided on each side of the mounting hole 201, the through holes 202 on one side of the mounting hole 201 can also form an axially symmetric or centrally symmetric structure. This embodiment is illustrated by taking four through holes 202 on one side of the mounting hole 201 as an example. Please refer to [link to relevant documentation]. Figure 1 and Figure 2 The four mounting holes 201 on one side can be distributed at the four corners of the square, which can more effectively suppress the radial cracking tendency of the body 100, and thus further reduce the risk of cracking of the plastic body 100 when nailing.

[0045] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 3 , Figure 4 and Figure 5 The anti-cracking structure for nail fixing also includes an object part 300 for connecting to the body 100; the object part 300 has a protrusion 301 formed on it that can abut against the insert 200 axially, and a connecting hole 302 formed on the protrusion 301 for merging with the mounting hole 201, the connecting hole 302 being coaxially arranged with the protrusion 301. The object part 300 described in this embodiment can be another plastic body structure. In the field of automotive lighting, the body 100 and the object part 300 can be two plastic parts used to constitute the target lamp, which will not be elaborated here.

[0046] According to the structure provided in this embodiment, the protrusion 301 formed on the object 300 can directly abut axially against the exposed area of ​​the insert 200. In this way, the connection hole 302, which directly connects with the mounting hole 201, can ensure that the axial load during nailing can be directly transferred from the protrusion 301 to the insert 200 with better ductility, thereby effectively avoiding the plastic body 100 bearing the main connection stress. In addition, the surface contact between the protrusion 301 and the insert 200 greatly increases the stress-bearing area, so that the parts of the protrusion 301 and the insert 200 used for connection with fasteners can withstand less pressure, thereby further reducing the risk of cracking of the plastic body 100 during nailing.

[0047] It is understood that the cross-sectional shape of the protrusion 301 and the mating hole in this embodiment is not limited. Commonly used rectangular, square and circular structures in the art can be selected. The shape can also be set to correspond to the shape of the mounting hole 201. Taking the mounting hole 201 as a circular hole as an example, the mating hole can also be set to a circular hole. In this way, the protrusion 301 coaxial with the mounting hole 201 can also be set to a cylindrical structure. This can further disperse the concentrated stress on the protrusion 301 and the insert 200, which is beneficial to further reduce the risk of cracking of the plastic body 100 when nailing.

[0048] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 3 , Figure 4 and Figure 5 The main body 100 has a through hole 101 formed therethrough for the protruding post 301 to fit through and abut against the insert 200. In this embodiment, the through hole 101 can be configured as a round hole, square hole, or polygonal hole for the protruding post 301 to pass through. For ease of explanation, this embodiment uses a round hole as an example for the through hole 101.

[0049] According to the structure provided in this embodiment, the precise fit between the through hole 101 and the protrusion 301 can effectively limit the radial displacement of the protrusion 301 and eliminate the wobbling gap during assembly. Furthermore, the plastic material around the through hole 101 can generate a uniform clamping force on the insert 200. This design ensures the assembly stability between the body 100 and the object 300, and strengthens the connection between the insert 200 and the plastic body 100. This allows the overall connection structure to more fully utilize the ductility of the insert 200 when subjected to nailing impact, thereby more effectively preventing cracking of the plastic body 100.

[0050] It is understood that in this embodiment, setting the through hole 101 to a shape adapted to the protrusion 301 can achieve two technical effects. Thus, in other embodiments of this application, the through hole 101 can be set to other shapes and sizes to achieve only one technical effect. For example, the diameter of the through hole 101 can be set to be larger than the diameter of the protrusion 301. While this prevents the through hole 101 from limiting the radial movement of the protrusion 301, it still ensures direct contact between the protrusion 301 and the insert 200, and also facilitates the protrusion 301 passing through the through hole 101. In specific implementations, this can be flexibly set as needed.

[0051] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 3 , Figure 4 and Figure 5 Multiple protrusions 301 are formed on the object 300 for abutting against the same insert 200.

[0052] According to the structure provided in this embodiment, by setting multiple protrusions 301 abutting against the same insert 200 on the object 300, the force during nailing can be evenly distributed to the surface of the insert 200 through multiple contact points. This not only significantly reduces the stress concentration at a single connection point, but also forms a stable force couple balance on the insert 200 through the synergistic action of multiple protrusions 301. This design allows the plastic body 100 to be completely separated from the main force-bearing link, thereby further reducing the risk of cracking of the plastic body 100 during nailing.

[0053] It is understood that, in specific implementation, the side of the insert 200 facing the protrusion 301 needs to form a sufficiently large exposed area. Multiple protrusions 301 can be arranged side-by-side or spaced apart. Of course, in other embodiments of this application, the protrusions 301 and inserts 200 can also be in a one-to-one correspondence, which will not be elaborated further here.

[0054] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 3 , Figure 4 and Figure 5 The insert 200 is a metal body with rust-resistant properties. It is understood that the insert 200 in this embodiment can be made of materials with rust-resistant properties commonly used in the art. Rust-resistant properties refer to the ability of a material or coating to resist corrosion and rust. Materials with good rust-resistant properties commonly used in the art include stainless steel, galvanized steel, and aluminum. For ease of explanation, this embodiment uses stainless steel as an example for the insert 200.

[0055] According to the structure provided in this embodiment, by using a rust-resistant metal material to make the insert 200, not only can the anti-nail fixing crack structure maintain long-term stable mechanical properties in humid or corrosive environments, but also the bonding interface between the insert 200 and the plastic body 100 will not generate expansion stress caused by corrosion products. This can fundamentally avoid the problem of stress concentration cracking of the plastic body 100 caused by metal corrosion, thereby further reducing the risk of cracking of the plastic body 100 when nailing.

[0056] Of course, there may be other metal or non-metal materials in the art that have rust-proof properties and good ductility. The inserts 200 formed by these materials should be regarded as variations of this embodiment and are within the protection scope of this application. They will not be described in detail here.

[0057] In another embodiment of this application, a vehicle lamp is provided, having an anti-cracking structure for nail fixing as described in any of the preceding embodiments. Since this vehicle lamp has the anti-cracking structure for nail fixing described in any of the foregoing embodiments, it also has the same technical effects as each of the aforementioned anti-cracking structures for nail fixing, and will not be elaborated upon here.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A structure for preventing fixed cracking, characterized in that, include: The main body is made of plastic. An insert is embedded in the body and forms exposed areas on both sides that are not covered by the body. The insert forms through mounting holes in the exposed areas and the insert has better ductility than the body.

2. The anti-fixation cracking structure as described in claim 1, characterized in that: At least one edge of the insert is serrated.

3. The anti-fixation cracking structure as described in claim 2, characterized in that: The serrated shape formed by the insert at its own edge is symmetrical about the geometric center of the mounting hole.

4. The anti-fixation cracking structure as described in any one of claims 1-3, characterized in that: The main body is integrally injection molded onto the insert, and the insert has a pre-set through hole for the main body to fill.

5. The anti-fixation cracking structure as described in claim 4, characterized in that: The through hole is axially parallel to the mounting hole and is symmetrical about the central axis of the mounting hole.

6. The anti-fixation cracking structure as described in claim 1, characterized in that: The anti-fixation cracking structure also includes an object component for connecting to the body; The object has a protrusion that can abut against the insert along the axial direction, and the protrusion has a connecting hole for mating with the mounting hole, the connecting hole being coaxially arranged with the protrusion.

7. The anti-fixation cracking structure as described in claim 6, characterized in that: The body has a through hole for the protrusion to fit through and abut against the insert.

8. The anti-fixation cracking structure as described in claim 6 or 7, characterized in that: The object is formed with a plurality of protrusions for abutting against the same insert.

9. The anti-fixation cracking structure as described in claim 1, characterized in that: The insert is made of a metal material with rust-resistant properties.

10. A vehicle light, characterized in that, It has a structure for preventing fixed cracking as described in any one of claims 1-9.

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