Anti-falling structure of automobile lamp assembly hot embedded part

Abstract

The utility model relates to the technical field of automobile lamp assembly, in particular to an anti-falling structure of an automobile lamp assembly hot embedded part, a hot embedded base comprises an annular baffle, an annular hot melting part and a columnar hot melting part are arranged in an inner cavity of the annular baffle, and the annular hot melting part, the columnar hot melting part and the annular baffle are concentric; the lower end of the screw body is sequentially and fixedly connected with an annular pressing plate and a bonding column body, rhombic friction lines are formed in the surface of the bonding column body, a cavity is formed in the middle of the lower end face of the bonding column body, and a plurality of annular grooves distributed at equal intervals are formed in the inner wall of the cavity in the length direction of the bonding column body. The hot embedded part has the beneficial effects that the cavity is formed in the middle of the lower end face of the bonding column body, the annular grooves distributed at equal intervals are formed in the inner wall of the cavity, the columnar hot melting part is arranged in the middle of the inner cavity of the annular hot melting part, and in the hot embedding process of the hot embedded part, the columnar hot melting part is heated to melt and fills the annular grooves; the hot burying strength of the hot buried part can be further improved, and the hot buried part is prevented from being pulled out.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting assembly technology, specifically to an anti-detachment structure for thermally embedded parts in automotive lighting assembly. Background Technology

[0002] The long strip headlights of new energy vehicles are relatively large, and a large number of screws need to be embedded in them during processing to improve their assembly strength. The screws are generally embedded in two ways: one is to pre-insert them when the headlight housing is formed, and the other is to take a good product from the headlight housing after it is formed and use equipment to heat and insert the screws.

[0003] In the prior art, Chinese invention with publication number CNl17507381B discloses a screw hot-embedding device and method for automotive lamp housing, which uses a mechanical drive to hot-embed the screws into the automotive lamp housing.

[0004] Currently, after the screws on the headlight housing are heat-embedded, their fixation relies solely on the adhesion between the screw surface and the hot-melt plastic. However, during headlight installation, tightening the nut generates a significant outward pull force on the screw, causing it to detach from the headlight housing and affecting the overall connection strength and stability of the headlight. Therefore, this invention proposes an anti-detachment structure for the heat-embedded components in headlight assembly to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-detachment structure for heat-embedded parts of vehicle lamp assembly, so as to solve the problems of low heat-embedded strength and easy pull-out of screws mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-detachment structure for a heat-embedded component in a vehicle lamp assembly, comprising a vehicle lamp housing, a heat-embedded base fixedly disposed on the surface of the vehicle lamp housing, a heat-embedded component heat-embedded and fixedly disposed in the inner cavity of the heat-embedded base, the heat-embedded base comprising an annular baffle, an annular heat-melting component and a columnar heat-melting component disposed in the inner cavity of the annular heat-melting component, the three being concentric, a heat-insulating baffle fixedly disposed at the bottom of the inner cavity of the annular heat-melting component, and a cross-shaped anti-rotation protrusion fixedly disposed on the surface of the heat-insulating baffle;

[0007] The heat-embedded component includes a screw body, and an annular pressure plate and an adhesive column are fixedly connected to the lower end of the screw body in sequence. The surface of the adhesive column is provided with diamond-shaped friction texture. A cavity is provided in the middle of the lower end face of the adhesive column, and the inner wall of the cavity is provided with multiple annular grooves distributed at equal intervals along the length of the adhesive column. The cross-section of the annular grooves is arc-shaped. An anti-rotation groove corresponding to and adapted to the anti-rotation protrusion is provided at the edge of the lower end face of the adhesive column.

[0008] Preferably, the outer wall of the annular baffle is provided with a reinforcing plate fixed to the headlight housing, the inner wall of the annular baffle is fixed with a plurality of internal tooth blocks arranged in an annular array, and the outer wall of the annular hot melt part is provided with tooth grooves corresponding one-to-one with the plurality of internal tooth blocks.

[0009] Preferably, the annular hot melt component has mounting grooves on both its upper and lower surfaces, and the annular pressure plate and heat insulation baffle are located in the inner cavities of the two mounting grooves and are adapted to them.

[0010] Preferably, the lower surfaces of both the annular hot melt component and the columnar hot melt component are provided with clearance grooves that are adapted to the anti-rotation protrusion. Each of the four ends of the anti-rotation protrusion is fixed with a reinforcing plate located inside the annular hot melt component, and the middle part of the anti-rotation protrusion is fixed with a protrusion located inside the columnar hot melt component.

[0011] Preferably, the upper end of the inner wall of the cavity is provided with a plurality of through holes arranged in a ring array, and the lower surface of the annular pressure plate is fixed with a plurality of reinforcing plates arranged in a ring array. After being heated, the reinforcing plates are inserted into the annular hot melt component from top to bottom, and the surface of the reinforcing plates is provided with through grooves.

[0012] Preferably, the inner diameter of the annular hot melt component is consistent with the outer diameter of the bonded column, and one side edge of the reinforcing plate is close to the outer wall of the bonded column with a gap between them.

[0013] Preferably, the columnar hot melt component is interference-fitted with the cavity, and the upper end face of the columnar hot melt component is flush with the upper surface of the annular hot melt component.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention achieves heat embedding by setting an annular heat-melting component in the inner cavity of an annular baffle, and sequentially fixing an annular pressure plate and an adhesive column at the lower end of the screw body. After the heat-embedded component is heated and the adhesive column is inserted into the inner cavity of the annular heat-melting component, the surface of the adhesive column is bonded to the inner wall of the annular heat-melting component, and the lower surface of the annular pressure plate is bonded to the upper surface of the annular heat-melting component. A cavity is opened in the middle of the lower end face of the adhesive column, and multiple annular grooves are opened in the inner wall of the cavity. A columnar heat-melting component is set in the middle of the inner cavity of the annular heat-melting component. During the heat embedding process, the columnar heat-melting component melts and fills the annular grooves, which can further improve the heat embedding strength of the heat-embedded component and prevent it from being pulled out. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the structure of the thermally embedded part of this utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the thermally embedded base structure of this utility model;

[0019] Figure 4 This is an exploded view of the thermally embedded base structure of this utility model;

[0020] Figure 5 This is a three-dimensional schematic diagram of the annular hot melt component structure of this utility model.

[0021] In the diagram: 1. Headlight housing; 2. Embedded base; 21. Annular baffle; 22. Reinforcing plate; 23. Internal tooth block; 24. Annular hot-melt component; 241. Tooth groove; 242. Mounting groove; 25. Columnar hot-melt component; 251. Clearance groove; 26. Heat insulation baffle; 27. Anti-rotation protrusion; 28. Reinforcing plate; 29. ​​Protrusion; 3. Embedded component; 31. Screw body; 32. Annular pressure plate; 33. Adhesive column; 34. Cavity; 35. Annular groove; 36. Anti-rotation slot; 37. Through hole; 38. Reinforcing plate; 39. Through groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 5 This utility model provides a technical solution:

[0024] Example 1: A structure for preventing the detachment of a heat-embedded component for a vehicle lamp assembly includes a vehicle lamp housing 1, a heat-embedded base 2 fixedly disposed on the surface of the vehicle lamp housing 1, and a heat-embedded component 3 heat-embedded and fixedly disposed in the inner cavity of the heat-embedded base 2.

[0025] Specifically, the heat-embedded base 2 includes an annular baffle 21, which is fixed to the surface of the headlight housing 1. An annular heat-fused component 24 and a columnar heat-fused component 25 are concentrically arranged within the inner cavity of the annular baffle 21. The annular heat-fused component 24 and the columnar heat-fused component 25 are pre-fixed within the inner cavity of the annular baffle 21. A heat-insulating baffle 26 is fixed at the bottom of the inner cavity of the annular heat-fused component 24. The heat-insulating baffle 26 is made of a heat-insulating material known in the prior art. When the heat-embedded component 3 is heated and heat-embedded inside the heat-embedded base 2, the heat-insulating baffle 26 can... To prevent heat from being directly transferred to the surface of the headlight housing 1 and causing damage to the headlight housing 1, when the heat-embedded part 3 is heated and embedded, only the annular heat-melting part 24 and the columnar heat-melting part 25 will be heated and melted to achieve bonding and fixation of the heat-embedded part 3. Among them, the annular heat-melting part 24 and the columnar heat-melting part 25 are made of heat-melting plastic material. A cross-shaped anti-rotation protrusion 27 is fixed on the surface of the heat insulation baffle 26. The anti-rotation protrusion 27 is a non-heat-melting hard material, which mainly cooperates with the subsequent anti-rotation slot 36 to prevent the heat-embedded part 3 from rotating.

[0026] Furthermore, the heat-embedded part 3 includes a screw body 31. An annular pressure plate 32 and an adhesive column 33 are sequentially fixedly connected to the lower end of the screw body 31. After the heat-embedded part 3 is heat-embedded and fixed, the screw body 31 serves to connect with the external nut via a thread. A diamond-shaped friction pattern is formed on the surface of the adhesive column 33 to increase the friction between the adhesive column 33 and the inner wall of the annular heat-melted part 24. After the adhesive column 33 is heated and the inner wall of the annular heat-melted part 24 is melted, the diamond-shaped friction pattern effectively increases the bonding strength between the two. A cavity 34 is formed in the middle of the lower end face of the adhesive column 33, and multiple annular grooves 35 are evenly spaced along the length of the adhesive column 33 on the inner wall of the cavity 34. The cross-section of the annular grooves 35... The surface is arc-shaped, and the adhesive column 33 can be sleeved on the outside of the columnar hot melt part 25 through the cavity 34. After the adhesive column 33 is heated, the columnar hot melt part 25 melts in the cavity 34 and fills the annular groove 35, thereby further increasing the overall hot embedding fixing strength of the hot embedded part 3 and effectively preventing the hot embedded part 3 from coming out of the hot embedded base 2 when it is tightened by the nut. An anti-rotation groove 36 corresponding to and adapted to the anti-rotation protrusion 27 is provided at the lower end edge of the adhesive column 33. As mentioned above, after the adhesive column 33 is inserted into the inner cavity of the annular hot melt part 24 from top to bottom, the anti-rotation groove 36 can cooperate with the anti-rotation protrusion 27 to prevent the hot embedded part 3 from rotating inside the hot embedded base 2 and affecting the hot embedding strength.

[0027] To further improve the thermal embedding stability of the hot-embedded part 3, this application also has a reinforcing plate 22 fixed to the headlight housing 1 on the outer wall of the annular baffle 21 to improve the strength of the annular baffle 21 itself. Multiple internal tooth blocks 23 arranged in an annular array are fixed on the inner wall of the annular baffle 21. The outer wall of the annular hot melt part 24 is provided with tooth grooves 241 corresponding to the multiple internal tooth blocks 23. The tooth grooves 241 and the internal tooth blocks 23 cooperate with each other to improve the installation stability of the annular hot melt part 24 in the inner cavity of the annular baffle 21. Secondly, there is a certain distance between the outer wall and the inner wall of the annular hot melt part 24. The adhesive column 33 only heats and melts the inner wall of the annular hot melt part 24, without causing the surface of the annular hot melt part 24 to melt. Therefore, the annular hot melt part 24 is pre-installed in the inner cavity of the annular hot melt part 24 and fixed with it by hot melting before the hot-embedded part 3 is hot-embedded.

[0028] Of course, depending on the actual situation, the annular hot melt component 24 can also be placed into the inner cavity of the annular baffle 21 together with the hot embedded component 3. However, the hot embedded component 3 needs to be heated to a higher temperature so that the annular hot melt component 24 can be completely melted, so that the inner and outer side walls of the annular hot melt component 24 are respectively bonded to the bonding column 33 and the annular baffle 21.

[0029] To prevent overflow due to pressure from the heated embedded part 3 when the inner wall of the annular hot melt component 24 melts, this application further includes mounting grooves 242 on both the upper and lower surfaces of the annular hot melt component 24. The annular pressure plate 32 and the heat insulation baffle 26 are respectively located in the inner cavities of the two mounting grooves 242 and are adapted to them. Figure 3 and Figure 2 As shown, the annular pressure plate 32 is inserted from top to bottom into the mounting groove 242 located on the upper surface of the annular hot melt part 24. This can prevent the inner wall of the annular hot melt part 24 from being squeezed outward by the adhesive column 33 after it melts due to heat. In addition, the upper surface of the annular pressure plate 32 is flush with the upper surface of the annular hot melt part 24, which can also improve the aesthetics of the hot-embedded part 3 after hot embedding.

[0030] To improve the strength of the annular hot melt component 24, this application also provides clearance grooves 251 adapted to the anti-rotation protrusions 27 on the lower surfaces of both the annular hot melt component 24 and the columnar hot melt component 25, ensuring that the lower surfaces of both the annular hot melt component 24 and the columnar hot melt component 25 can be bonded and fixed to the upper surface of the heat insulation baffle 26. Reinforcing plates 28 located inside the annular hot melt component 24 are fixed at the four ends of the anti-rotation protrusions 27, which can be used to improve the strength of the annular hot melt component 24. A protrusion 29 located inside the columnar hot melt component 25 is fixed in the middle of the anti-rotation protrusions 27, which can be used to increase the contact area with the inside of the columnar hot melt component 25 and improve the bonding and fixing strength of the columnar hot melt component 25 to the inner wall of the cavity 34.

[0031] To ensure that the melted columnar hot-melt component 25 fills the cavity 34, this application also includes multiple through holes 37 arranged in a ring array at the upper end of the inner wall of the cavity 34. After the adhesive column 33 is fitted onto the outside of the columnar hot-melt component 25, the columnar hot-melt component 25 melts upon heating. Excess material from the melted columnar hot-melt component 25 can overflow from the through holes 37, connecting the hot-melt plastic on the inner and outer sides of the adhesive column 33 together, improving the stability of the heat-embedded component 3. Furthermore, the through holes 37 can also allow the cavity to be filled with hot-melt plastic. The gas in the cavity 34 is discharged to prevent the columnar hot melt component 25 from failing to fill the cavity 34 after hot melting due to gas retention. Multiple reinforcing plates 38 arranged in a ring array are fixed on the lower surface of the annular pressure plate 32. After heating, the reinforcing plates 38 are inserted into the annular hot melt component 24 from top to bottom. The surface of the reinforcing plates 38 is provided with through grooves 39. After the hot embedded component 3 is heated as a whole, the reinforcing plates 38 can be inserted into the annular hot melt component 24 to improve the connection strength between them.

[0032] To prevent the embedded part 3 from tilting, the inner diameter of the annular hot melt part 24 of this application is consistent with the outer diameter of the adhesive column 33. One side edge of the reinforcing plate 28 is close to the outer wall of the adhesive column 33 and a gap is left between them. Only a small gap is left between the reinforcing plate 28 and the adhesive column 33. After the device is hot-embedded and completely cooled, the reinforcing plate 28 can position the embedded part 3 to a certain extent and prevent the embedded part 3 from tilting.

[0033] To ensure that the inner cavity of the through hole 37 can be filled with hot melt plastic, the columnar hot melt component 25 of this application is interference-fitted with the cavity 34. The upper end face of the columnar hot melt component 25 is flush with the upper surface of the annular hot melt component 24. Therefore, the volume of the columnar hot melt component 25 after melting is definitely larger than the inner cavity volume of the cavity 34. As the hot-embedded component 3 is embedded, the excess part of the columnar hot melt component 25 after melting will overflow from the through hole 37, thereby filling the inner cavity of the through hole 37.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for preventing the detachment of a heat-embedded component in a vehicle lamp assembly, comprising a vehicle lamp housing (1), wherein a heat-embedded base (2) is fixedly disposed on the surface of the vehicle lamp housing (1), and a heat-embedded component (3) is heat-embedded and fixed in the inner cavity of the heat-embedded base (2), characterized in that: The heat-embedded base (2) includes an annular baffle (21). The inner cavity of the annular baffle (21) is provided with an annular heat-melting component (24) and a columnar heat-melting component (25), and the three are concentric. The bottom of the inner cavity of the annular heat-melting component (24) is fixed with a heat-insulating baffle (26). The surface of the heat-insulating baffle (26) is fixed with a cross-shaped anti-rotation protrusion (27). The embedded part (3) includes a screw body (31). The lower end of the screw body (31) is fixedly connected to an annular pressure plate (32) and an adhesive column (33). The surface of the adhesive column (33) is provided with diamond-shaped friction texture. A cavity (34) is provided in the middle of the lower end face of the adhesive column (33). The inner wall of the cavity (34) is provided with a plurality of annular grooves (35) distributed at equal intervals along the length of the adhesive column (33). The cross section of the annular groove (35) is arc-shaped. An anti-rotation slot (36) corresponding to and adapted to the anti-rotation protrusion (27) is provided at the edge of the lower end face of the adhesive column (33).

2. The anti-detachment structure for a heat-embedded component in a vehicle lamp assembly according to claim 1, characterized in that: The outer wall of the annular baffle (21) is provided with a reinforcing plate (22) fixed to the headlight housing (1). The inner wall of the annular baffle (21) is fixed with a plurality of internal tooth blocks (23) arranged in an annular array. The outer wall of the annular hot melt part (24) is provided with tooth grooves (241) corresponding to the plurality of internal tooth blocks (23).

3. The anti-detachment structure for a heat-embedded component in a vehicle lamp assembly according to claim 2, characterized in that: The annular hot melt component (24) has mounting grooves (242) on both its upper and lower surfaces. The annular pressure plate (32) and the heat insulation baffle (26) are located in the inner cavities of the two mounting grooves (242) and are adapted to them.

4. The anti-detachment structure for a heat-embedded component in a vehicle lamp assembly according to claim 3, characterized in that: The lower surfaces of the annular hot melt component (24) and the columnar hot melt component (25) are provided with clearance grooves (251) that are adapted to the anti-rotation protrusion (27). The four ends of the anti-rotation protrusion (27) are fixed with reinforcing plates (28) located inside the annular hot melt component (24). The middle part of the anti-rotation protrusion (27) is fixed with a protrusion (29) located inside the columnar hot melt component (25).

5. The anti-detachment structure for a heat-embedded component in a vehicle lamp assembly according to claim 4, characterized in that: The upper end of the inner wall of the cavity (34) is provided with a plurality of through holes (37) arranged in a ring array. The lower surface of the annular pressure plate (32) is fixed with a plurality of reinforcing plates (38) arranged in a ring array. After being heated, the reinforcing plates (38) are inserted into the annular hot melt part (24) from top to bottom. The surface of the reinforcing plates (38) is provided with through grooves (39).

6. The anti-detachment structure for a heat-embedded component in a vehicle lamp assembly according to claim 5, characterized in that: The inner diameter of the annular hot melt component (24) is consistent with the outer diameter of the adhesive column (33), and one side edge of the reinforcing plate (28) is close to the outer wall of the adhesive column (33) with a gap between them.

7. The anti-detachment structure for a heat-embedded component in a vehicle lamp assembly according to claim 6, characterized in that: The columnar hot melt component (25) is interference-fitted with the cavity (34), and the upper end face of the columnar hot melt component (25) is flush with the upper surface of the annular hot melt component (24).

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