Lens and vehicle lamp

Abstract

The lens comprises a body and a mounting part, and the mounting part is arranged on the body; a threaded through hole is formed in the mounting part, and a through groove is formed in the hole wall of the threaded through hole so as to cut off the hole wall of the threaded through hole; the groove width of the through groove is gradually increased in the axis direction of the threaded through hole, the through groove comprises a first groove section and a second groove section, the groove width size of the end, away from the second groove section, of the first groove section is d1mm, the groove width size of the joint of the first groove section and the second groove section is d2mm, the groove width size of the end, away from the first groove section, of the second groove section is d3mm, and d3 > d2 > d1 are met. Through the arrangement of the through groove, the stress generated when the screw is tightened can be released, and cracking of the mounting part is avoided; the groove widths of the first groove section and the second groove section are gradually increased in the direction from the first groove section to the second groove section, and the groove width of the second groove section is larger than the groove width of the first groove section, so that cracking of the mounting part is avoided, strain during lens demolding can be avoided, and the yield of products is improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile lighting equipment, and in particular to a lens and a car lamp. Background Art

[0002] Lenses are a common component in automotive lights. To ensure optimal optical performance, polymethyl methacrylate (PMMA) is often used as the lens material. Conventional lens installation involves screws at both ends. However, due to the limited impact resistance and surface hardness of PMMA, tightening the screws can cause cracks in the threaded holes used for lens attachment, reducing product yield.

[0003] Therefore, there is a need to improve the existing technology. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art and provide a lens and a vehicle light.

[0005] According to one aspect of the present application, the present application provides a lens, comprising a main body and a mounting portion, which is arranged on the main body; wherein the mounting portion is provided with a threaded through hole, and the hole wall of the threaded through hole is provided with a through groove that penetrates the mounting portion to separate the hole wall of the threaded through hole; the groove width of the through groove gradually increases along the axial direction of the threaded through hole, and the through groove comprises a first groove segment and a second groove segment adjacent to each other, and the groove walls of the connected first groove segments are not coplanar with the groove walls of the second groove segments; the groove width dimension of the first groove segment away from the end of the second groove segment is d1㎜, the groove width dimension at the connection between the first groove segment and the second groove segment is d2㎜, and the groove width dimension of the second groove segment away from the end of the first groove segment is d3㎜, satisfying: d3>d2>d1.

[0006] In one embodiment, the through groove has a symmetry reference plane; the first groove section has two first walls arranged opposite to each other, and the second groove section has two second walls arranged opposite to each other, the two first walls are symmetrically arranged on both sides of the symmetry reference plane, and the two second walls are symmetrically arranged on both sides of the symmetry reference plane; the angle between the first wall and the symmetry reference plane is α, and the angle between the second wall and the symmetry reference plane is β, satisfying: β>α.

[0007] In one embodiment, 1°≤α≤5°, 5°≤β≤15°.

[0008] In one embodiment, α=3° and β=10°.

[0009] In one embodiment, 0.5≤d1≤1.1, 0.9≤d2≤1.5, and 1.2≤d3≤2.0.

[0010] In one embodiment, in the axial direction of the threaded through hole, the two opposite sides of the mounting portion are a first side and a second side, and the first side intersects with the first groove section; the first groove section has two first walls arranged opposite to each other, and the second groove section has two second walls arranged opposite to each other; the angle between the first wall and the first side is δ, and the angle between the second wall and the second side is γ, satisfying: δ+γ>180°.

[0011] In one embodiment, 85°≤δ≤89°, and 95°≤γ≤105°.

[0012] In one embodiment, the included angle between the first wall and the second wall is θ, which satisfies: 166°≤θ<180°.

[0013] In one embodiment, in the axial direction of the threaded through hole, the two opposite sides of the mounting portion are a first side and a second side, and the first side intersects with the first groove section; the main body has a light incident side and a light emitting side that are oppositely arranged, and the first side is perpendicular to the light incident side.

[0014] In one embodiment, a stabilizing portion is further included. The stabilizing portion is disposed on opposite sides of the two mounting portions, and extends and protrudes from the second surface along the axial direction of the threaded through hole.

[0015] In one embodiment, the mounting portion is further provided with a positioning through hole for locating the mounting position of the threaded through hole.

[0016] According to another aspect of the present application, a vehicle lamp is provided, comprising any one of the aforementioned lenses.

[0017] The beneficial effects of the present application are as follows: by arranging a through groove on the hole wall of the threaded through hole, and the through groove passes through the mounting portion, the stress when the screw is tightened can be released, thereby avoiding cracking of the mounting portion (threaded through hole); the through groove includes a first groove section and a second groove section adjacent to each other, and the groove wall of the connected first groove section and the groove wall of the second groove section are not coplanar, that is, there is an angle between the two connected groove walls (the angle is not equal to 180°), and the groove width of the first groove section and the second groove section gradually increases in the direction from the first groove section to the second groove section, and the groove width of the second groove section is greater than the groove width of the first groove section. Such an arrangement avoids cracking of the mounting portion (threaded through hole) while avoiding damage to the lens (threaded through hole) during demolding, thereby improving the product yield and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0019] Figure 1 This is a schematic diagram of a lens mounting portion provided in an embodiment of the present application.

[0020] Figure 2 This is a structural schematic diagram of a through slot provided in an embodiment of the present application.

[0021] Figure 3 This is a schematic structural diagram of another through slot provided in an embodiment of the present application.

[0022] Figure 4 This is a schematic structural diagram of another through slot provided in an embodiment of the present application.

[0023] In the picture:

[0024] 10. Main body; 11. Light incident surface; 12. Light emitting surface;

[0025] 20. Mounting portion; 21. Threaded through hole; 22. Through groove; 221. First groove section; 2211. First wall; 222. Second groove section; 2222. Second wall; 23. First surface; 24. Second surface; 25. Positioning through hole; 26. Protrusion;

[0026] 30. Stability Department;

[0027] λ, symmetry reference plane. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0030] The lens and the headlight in this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] In the prior art, when the lens is fixed by screws, the lens may crack due to the lens material, which reduces the product yield. Even if the lens does not crack during installation, there is still a risk of cracking during subsequent use, affecting the optical effect of the lens.

[0032] In order to solve the above technical problems, an embodiment of the present application provides a lens, including a main body and a mounting portion, which is arranged on the main body; wherein the mounting portion is provided with a threaded through hole, and the hole wall of the threaded through hole is provided with a through groove that penetrates the mounting portion to separate the hole wall of the threaded through hole; the groove width of the through groove gradually increases along the axial direction of the threaded through hole, and the through groove includes a first groove section and a second groove section adjacent to each other, and the groove walls of the connected first groove sections are not coplanar with the groove walls of the second groove sections; the groove width dimension of the first groove section away from the end of the second groove section is d1㎜, the groove width dimension at the connection between the first groove section and the second groove section is d2㎜, and the groove width dimension of the second groove section away from the end of the first groove section is d3㎜, satisfying: d3>d2>d1. By providing a through groove on the wall of the threaded through hole, and the through groove passing through the mounting portion, stress during screw tightening can be released, thereby avoiding cracking of the mounting portion (threaded through hole); the through groove includes a first groove segment and a second groove segment adjacent to each other, the groove wall of the connected first groove segment and the groove wall of the second groove segment are not coplanar, and the groove width of the first groove segment and the second groove segment gradually increases in the direction from the first groove segment to the second groove segment, and the groove width of the second groove segment is greater than the groove width of the first groove segment. This arrangement avoids cracking of the mounting portion (threaded through hole) and also avoids damage to the lens (threaded through hole) during demolding, thereby improving the product yield and reducing production costs. This is explained in detail below.

[0033] See Figure 1 and Figure 3In one embodiment, the lens includes a body 10 and a mounting portion 20. The mounting portion 20 is provided on the body 10, and the body 10 is installed in the car lamp through the mounting portion 20. The body 10 is used to adjust the light of the car lamp; a threaded through hole 21 is provided on the mounting portion 20, and when the lens is installed, the lens is fixed in the car lamp by screws engaging with the threaded through hole 21; in this embodiment, a through groove 22 that passes through the mounting portion 20 is provided on the hole wall of the threaded through hole 21, and the through groove 22 separates the hole wall of the threaded through hole 21, that is, an opening (through groove 22) is provided on the side wall of the mounting portion 20. When the lens is installed (that is, the process of screwing the screw into the threaded through hole 21), such a setting can release stress and avoid cracking of the mounting portion 20 (threaded through hole 21). In this embodiment, the groove width of the through groove 22 gradually increases along the axial direction of the threaded through hole 21, and the through groove 22 includes a first groove section 221 and a second groove section 222 adjacent to each other, the groove wall of the connected first groove section 221 and the groove wall of the second groove section 222 are not coplanar (an angle not equal to 180° is formed between the two connected groove walls), the groove width dimension of the end of the first groove section 221 away from the second groove section 222 is d1㎜, the groove width dimension of the connection between the first groove section 221 and the second groove section 222 is d2㎜, and the groove width dimension of the end of the second groove section 222 away from the first groove section 221 is d3㎜, satisfying: d3>d2>d1. The width of the first groove section 221 and the second groove section 222 gradually increases in the direction from the first groove section 221 to the second groove section 222, and the groove width of the second groove section 222 is greater than the groove width of the first groove section 221. This arrangement prevents the mounting portion 20 (threaded through hole 21) from cracking and also prevents the lens (threaded through hole 21) from being pulled during demolding (specifically, as shown in FIG. Figure 1 As shown, when the lens is demolded, the mold needs to be pulled out of the through groove 22. The two sides of the mold will exert relative friction on the groove walls on both sides of the through groove 22. When the relative friction is large enough, the groove walls of the through groove 22 will be driven to move. If the groove walls on both sides are subjected to unequal forces, the two sides of the through groove 22 will be misaligned. If the groove walls on both sides are subjected to equal forces, the two sides of the through groove 22 will be displaced along the demolding direction. Both situations will cause damage to the lens. The specific demolding direction is, for example, Figure 1 In the perspective, the mold moves upward to release the lens from the mold. In this application, the first groove section 221 and the second groove section 222 have an angle between their same-side groove walls. At this time, the relative friction forces f1 and f2 between the adjacent groove walls of the first groove section 221 and the second groove section 222 and the mold are angled. As a result, some of the components of the two friction forces f1 and f2 are offset, and the resultant force is reduced, thereby reducing the probability of the product being damaged by force during demolding, improving the product's yield rate, and reducing production costs.

[0034] It should be noted that, in one embodiment, in the axial direction of the threaded through hole 21, the mounting portion 20 has two oppositely disposed surfaces, namely a first surface 23 and a second surface 24. Taking the first surface 23 as a reference, the groove wall slope of the first groove section 221 connected on the same side is greater than the groove wall slope of the second groove section 222, that is, the first groove section 221 is steeper than the second groove section 222. Figure 3 As shown in the through slot 22, the groove wall of the second groove section 222 is more inclined to the right than the groove wall of the first groove section 221. Figure 3 The groove wall on the left side of the through groove 22 is not specifically limited in this embodiment, as long as it does not interfere with the upward ejection operation of the mold. For example, in this embodiment, the groove wall slope of the first groove section 221 on the left side is smaller than the groove wall of the second groove section 222, and the groove wall of the second groove section 222 is perpendicular to the top surface of the mounting portion 20. In some embodiments, the groove wall slope of the first groove section 221 on the left side may also be greater than the groove wall of the second groove section 222.

[0035] It should also be noted that when an object is deformed due to external factors, internal forces interacting with each other are generated between the parts of the object. The internal force per unit area is called stress. In this embodiment, the external factor is the squeezing force of the screw on the threaded through hole 21 when the screw is engaged with the threaded through hole 21. The provision of the through groove 22 prevents the mounting portion 20 from cracking due to excessive stress. The width of the first groove section 221 and the width of the second groove section 222, i.e., the width of the through groove 22 in the transverse direction ( Figure 3 It should also be noted that, in this embodiment, the gradual increase in the width of the through groove 22 is a linear increase, that is, the groove wall of the through groove 22 is arranged in a plane. The following embodiments are all described by taking the groove wall of the through groove 22 as an example. In some embodiments, the gradual increase in the width of the through groove 22 can also be a nonlinear increase. For example, the groove width increases first and then decreases in the direction from the first groove section 221 to the second groove section 222. In this way, the groove wall of the through groove 22 is arranged in a concave surface. Alternatively, in some embodiments, the increase is first small and then large, and the groove wall of the through groove 22 is arranged in a convex surface. The present invention is not limited thereto.

[0036] See Figure 2 In one embodiment, the through slot 22 has a symmetrical reference plane (eg Figure 2 As shown in the middle plane λ, the same below), the first slot section 221 has two first walls 2211 arranged opposite to each other, and the second slot section 222 has two second walls 2222 arranged opposite to each other. The two first walls 2211 are symmetrically arranged on both sides of the symmetrical reference plane, and the two second walls 2222 are symmetrically arranged on both sides of the symmetrical reference plane, that is, the through slot 22 is symmetrically arranged relative to the symmetrical reference plane; the angle between the first wall 2211 and the symmetrical reference plane is α, and the angle between the second wall 2222 and the symmetrical reference plane is β (as shown in the middle plane λ, the same below), the first slot section 221 has two first walls 2211 arranged opposite to each other, and the second slot section 222 has two second walls 2222 arranged opposite to each other, Figure 2As shown, to facilitate the representation of angles α and β in the figure, two surfaces parallel to the symmetry reference plane intersect with the first wall 2211 and the second wall 2222, respectively, to form angles α and β, satisfying the following: β>α. The symmetrical arrangement of the through-slot 22 relative to the symmetry reference plane facilitates the design of the lens mold and effectively improves the uniformity of force applied when the screw is connected to the threaded through-hole 21.

[0037] It should be noted that in this embodiment, the slope of the first wall 2211 connected on the same side is greater than the slope of the second wall 2222, and this configuration is applied to both sides of the through-slot 22 (i.e., the first wall 2211 and the second wall 2222). When β>α, the opening of the second slot segment 222 is greater than the opening of the first slot segment 221, i.e., the slot width of the first slot segment 221 is smaller than the slot width of the second slot segment 222. The smaller slot width of the first slot segment 221 can relieve stress and prevent lens cracking while ensuring a tight connection between the screw and the threaded through hole 21, ensuring stable lens installation. The larger slot width of the second slot segment 222 can prevent strain on both sides of the through-slot 22 during lens demolding.

[0038] Referring to FIG. 2 , in one embodiment, 1° ≤ α ≤ 5°, 5° ≤ β ≤ 15°, and β > α, where α is, for example, 1°, 2°, 3°, 4°, 5°, and β is, for example, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, and so on. Thus, within the above range of values, the arrangement of the first groove section 221 and the second groove section 222 can ensure a stable connection between the lens and the headlight (preventing the lens from falling off the connection with the headlight), while also preventing strain on both sides of the through groove 22 during demolding. Furthermore, the arrangement can relieve stress and prevent cracking of the lens.

[0039] The performance of the technical solution provided in the embodiments of this application is evaluated in conjunction with specific embodiments below.

[0040] It should be noted that for each angle combination in the following examples, 20 samples were tested. Screws were tightened into the lens' threaded through-hole 21 using both automatic and manual tightening methods for comparison. Automatic tightening employed a torque of 0.8 Nm and a speed of 200 LPM, while manual tightening employed a torque of 1.2 Nm and a speed of 500 LPM. Samples with different angle combinations were visually observed for cracking, and the lenses were subjected to a vibration test to record any instances of lens detachment. Specific parameters and test results are detailed in Table 1.

[0041] Table 1

[0042]

[0043] It should be noted that, as can be seen from Table 1, the above table provides embodiments with α of 1°, 2°, 3°, 4°, and 5°, as well as a comparative example with α of 6°, and each value of α corresponds to an embodiment with a β value of 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, and 15°, as well as a comparative example with β values ​​of 2°, 3°, 4°, and 16°; wherein, the "×" in the table indicates that the product cannot be manufactured, and the "√" in the table indicates that the lenses have passed the cracking test and the vibration test, and no lens in the sample has cracked or fallen off. In addition, it can be seen from the table that when the values ​​of α and β are small, the actual product will be strained, and it will also cause the lens to crack; when the values ​​of α and β are large, the lens will vibrate and fall off during the vibration test, resulting in fixation failure (i.e., failure of the connection between the screw and the threaded through hole 21). When the values ​​of α and β are within the above range, the effect is best. The setting of the first groove section 221 and the second groove section 222 can not only ensure the stability of the connection between the lens and the headlight (the lens will not fall off from the connection with the headlight), but also ensure that the two sides of the through groove 22 will not be strained during demolding, and at the same time release stress to avoid cracking of the lens.

[0044] Optionally, α=3°, β=10°, the difference between α and β is moderate, and the yield rate in the lens production process is high; when the difference between α and β is small, that is, the first wall 2211 and the second wall 2222 are more inclined to be coplanar, at this time, the resultant force of the relative friction between the first wall 2211 and the second wall 2222 and the mold will be larger (the friction force f1 of the mold relative to the first wall 2211 and the friction force f2 of the mold relative to the second wall 2222 are more inclined to be colinear during demolding, and the resultant force is larger at this time), the actual product is more prone to scratches, and the yield rate is reduced; when the difference between α and β is large, the first wall 2211 and the second wall 222 The angle between α and β is relatively large. At this time, the resultant force of the relative friction between the first wall 2211 and the second wall 2222 and the mold is relatively small (when demolding, there is an angle between the friction force f1 of the mold on the first wall 2211 and the friction force f2 of the mold on the second wall 2222, and some of the components of force are offset, that is, the resultant force is relatively small at this time), which can be more conducive to smooth demolding. However, the difference between α and β is large, and the tightening force of the screw on the threaded through hole 21 is insufficient. After the lens is installed, it is more likely to vibrate and fall off than when the difference between α and β is moderate. Therefore, the moderate difference between α and β can increase the yield rate in the lens production process. It can ensure the stability of the connection between the lens and the car light (the lens will not fall off from the connection with the car light) and ensure that the two sides of the through groove 22 will not be strained during demolding.

[0045] In one embodiment, 0.5≤d1≤1.1, 0.9≤d2≤1.5, 1.2≤d3≤2.0. It has been verified that when d1, d2, and d3 are within this range, the stability of the connection between the lens and the headlight can be ensured (the lens will not fall off from the connection with the headlight), and both sides of the through groove 22 will not be damaged during demolding. Preferably, d1=0.8, d2=1.2, and d3=1.6.

[0046] See Figure 4 In one embodiment, in the axial direction of the threaded through hole 21, the mounting portion 20 has two oppositely disposed surfaces, namely a first surface 23 and a second surface 24. The first surface 23 intersects with the first groove section 221, that is, the first surface 23 is the bottom surface of the mounting portion 20 ( Figure 1 、 Figure 4 perspective); the first slot section 221 has two first walls 2211 arranged opposite to each other, and the second slot section 222 has two second walls 2222 arranged opposite to each other; the angle between the first wall 2211 and the first surface 23 is δ, and the angle between the second wall 2222 and the second surface 24 is γ, satisfying: δ+γ>180°.

[0047] It should be noted that, from Figure 4 It can be seen that the angle between the first wall 2211 and the second wall 2222 is θ. When δ+γ>180°, it can be seen that θ<180°( Figure 4 The mounting portions 20 on both sides of the through slot 22 are pentagonal in perspective, and the sum of their internal angles is 540°. It can be seen that when δ+γ>180°, θ<180° after removing the two right angles of 90°); in this way, the opening of the second slot segment 222 is greater than the opening of the first slot segment 221 (that is, the groove wall slope of the first slot segment 221 connected on the same side is greater than the groove wall slope of the second slot segment 222), and the top of the second wall 2222 is more biased to the left than the top of the first wall 2211 ( Figure 4 The first wall 2211 and the second wall 2222 on the left side in the viewing angle, that is, the groove width of the first groove section 221 is smaller than the groove width of the second groove section 222. The first groove section 221 with a smaller groove width can release stress to avoid lens cracking, while ensuring the tight connection between the screw and the threaded through hole 21, ensuring the stability of the lens installation. The second groove section 222 with a larger groove width can avoid the two sides of the through groove 22 from being strained when the lens is demolded.

[0048] In one embodiment, 85°≤δ≤89°, 95°≤γ≤105°, δ+γ>180°, δ is, for example, 85°, 86°, 87°, 88°, 89°, etc., and γ is, for example, 95°, 96°, 97°, 98°, 99°, 100°, 101°, 102°, 103°, 104°, 105°, etc. As such, within the above value range, the arrangement of the first groove section 221 and the second groove section 222 can ensure a stable connection between the lens and the headlight (the lens will not fall off the connection with the headlight), and can also ensure that both sides of the through groove 22 will not be strained during demolding, while also relieving stress and preventing cracking of the lens.

[0049] The performance of the technical solution provided in the embodiments of this application is evaluated in conjunction with specific embodiments below.

[0050] It should be noted that for each angle combination in the following examples, 20 samples were tested. The screws were tightened into the threaded through-hole 21 of the lens using both automatic and manual tightening methods for comparison. The automatic tightening torque was 0.8 Nm and the speed was 200 LPM; the manual tightening torque was 1.2 Nm and the speed was 500 LPM. The samples with different angle combinations were observed for cracking (visual inspection). The lenses were also subjected to a vibration test, and any instances of lens detachment were recorded (visual inspection). Specific parameters and test results are detailed in Table 2.

[0051] Table 2

[0052]

[0053]

[0054] It should be noted that, as can be seen from Table 2, the above table provides examples with δ values ​​of 85°, 86°, 87°, 88°, and 89°, and a comparative example with α of 84°. Furthermore, for each δ value, the corresponding γ values ​​are 95°, 96°, 97°, 98°, 99°, 100°, 101°, 102°, 103°, 104°, and 105°, and the comparative examples have β values ​​of 92°, 93°, 94°, and 106°. An "×" in the table indicates that the product could not be manufactured, and a "√" in the table indicates that all lenses passed the cracking test and vibration test, with no lens cracking or falling off in the sample. Furthermore, as can be seen from the table, when the δ value is large and the γ value is small, the actual product will experience strain and may also cause lens cracking. When the δ value is small and the γ value is large, the lens may vibrate and fall off during the vibration test, resulting in fixation failure (i.e., failure of the connection between the screw and the threaded through hole 21). When the values ​​of δ and γ are within the above range, the effect is best. The setting of the first groove section 221 and the second groove section 222 can not only ensure the stability of the connection between the lens and the headlight (the lens will not fall off from the connection with the headlight), but also ensure that during demolding, the two sides of the through groove 22 will not be strained, and at the same time can release stress to avoid cracking of the lens.

[0055] Optionally, δ=87°, γ=100°, the difference between δ and γ is moderate, and the yield rate in the lens production process is high; when the difference between δ and γ is small, that is, the first wall 2211 and the second wall 2222 are more inclined to be coplanar (such as Figure 4 For the groove wall on the left side, the difference between δ and γ is small, that is, δ≈γ). At this time, the resultant force of the relative friction between the first wall 2211 and the second wall 2222 and the mold will be larger (the friction force f1 of the mold relative to the first wall 2211 and the friction force f2 of the mold relative to the second wall 2222 during demoulding tend to be collinear, and the resultant force is larger at this time). The actual product is relatively more prone to scratches, which reduces the yield rate. When the difference between δ and γ is large, a certain angle is formed between the first wall 2211 and the second wall 2222. At this time, the first wall 2211 and the second wall 2222 are closer to each other. The resultant force of the relative friction forces between 222 and the mold will be smaller (when demolding, there is a large angle between the friction force f1 of the mold on the first wall 2211 and the friction force f2 of the mold on the second wall 2222, and some of the components of force will be offset, that is, the resultant force is smaller at this time). Although it can be more conducive to smooth demolding, the difference between δ and γ is large, and the tightening force of the screw on the threaded through hole 21 is insufficient. After the lens is installed, it will be more likely to vibrate and fall off than when the difference between δ and γ is moderate. Therefore, the difference between δ and γ is moderate, and the yield rate in the lens production process is higher.

[0056] See Figure 2In one embodiment, the angle between the first wall 2211 and the second wall 2222 is θ, which satisfies: 166°≤θ<180°. It has been verified that when the value of θ is within this range, it can not only ensure the stability of the connection between the lens and the headlight (the lens will not fall off from the connection with the headlight), but also ensure that the two sides of the through groove 22 will not be strained during demolding. Preferably, θ=173°.

[0057] It should be noted that when θ=173°, that is, the angle between the first wall 2211 and the second wall 2222 is neither too large (approaching 180°) nor too small (approaching 166°). When θ is too large, the first wall 2211 and the second wall 2222 tend to be coplanar. At this time, the resultant force of the relative friction between the first wall 2211 and the second wall 2222 and the mold is larger (the friction force of the mold relative to the first wall 2211 and the friction force of the mold relative to the second wall 2222 tend to be colinear during demoulding, and the resultant force is larger at this time). The actual product is more prone to scratches relative to θ=173°, which reduces the yield rate. When θ is too small, the first wall 2211 and the second wall 2222 tend to be coplanar. The resultant force of the relative friction between the first wall 2211 and the second wall 2222 and the mold is relatively small (when demolding, there is an angle between the friction force of the mold on the first wall 2211 and the friction force of the mold on the second wall 2222, and some of the components are offset, that is, the resultant force is relatively small at this time). Although it is more conducive to smooth demolding, if θ is too small, that is, the greater the difference in slope between the first wall 2211 and the second wall 2222 on the same side, the larger the opening of the second groove section 222, the insufficient tightening force of the screw on the threaded through hole 21, and the lens is more likely to vibrate and fall off after installation than when θ=173°. Therefore, when θ=173°, the yield rate of the lens in the production process is higher. It can ensure the stability of the connection between the lens and the car light (the lens will not fall off from the connection with the car light) and ensure that the two sides of the through groove 22 will not be strained during demolding.

[0058] See Figure 1 In one embodiment, the body 10 has a light incident surface 11 and a light exit surface 12 disposed opposite each other, and two mounting portions 20 are provided, one at each end of the lengthwise direction of the light incident surface 11. The mounting portions 20 are disposed on the light incident surface 11. This arrangement reduces the space occupied by the lens along the lengthwise direction of the light incident surface 11 without affecting the passage of light through the light incident surface 11, thereby facilitating the arrangement of other components within the headlight.

[0059] It should be noted that the mounting portion 20 is at least partially disposed on the light incident surface 11, and the relative positions of the two are designed according to the actual product. Figure 1 Only the mounting portion 20 at one end in the length direction of the lens is shown.

[0060] In one embodiment, in the axial direction of the threaded through hole 21, the mounting portion 20 has two oppositely disposed surfaces, namely a first surface 23 and a second surface 24. The first surface 23 intersects with the first groove section 221, that is, the first surface 23 is the bottom surface of the mounting portion 20 ( Figure 1 、 Figure 2 (perspective), in this embodiment, the first surface 23 is perpendicular to the light incident surface 11. This arrangement limits the angle at which the lens is installed in the headlight. During lens installation, the first surface 23 is brought into contact with the mounting surface on the headlight before the screws are tightened. Because the first surface 23 is perpendicular to the light incident surface 11, the angle of the light incident surface 11 relative to the headlight is limited after the lens is installed, resulting in a simple structure and ease of use. Furthermore, the perpendicularity between the first surface 23 and the light incident surface 11 facilitates mold processing and facilitates smooth demolding of the lens after fabrication.

[0061] It should be noted that, in some embodiments, the first surface 23 and the light incident surface 11 may be arranged in a non-perpendicular manner, which can be set according to the required installation angle of the lens relative to the vehicle lamp.

[0062] See Figure 1 In one embodiment, the lens further includes a stabilizing portion 30, which is provided on opposite sides of the two mounting portions 20 and extends outward from the second surface 24 in the axial direction of the threaded through hole 21. The provision of the stabilizing portion 30 can enhance the stability between the mounting portion 20 and the main body, ensuring the stability of the lens after installation, thereby ensuring the stability of the light and effectively improving the performance of the headlight. In addition, the stabilizing portion 30, the main body, and the mounting portion 20 enclose an installation space ( Figure 1 The mounting space is provided for tightening the screws when the lens is installed. When installing the screws, the screws will inevitably fall off the screwdriver or other tightening tools. The setting of the above-mentioned mounting space can separate the screws from the light incident surface 11, that is, the screws that fall during installation will not scratch the light incident surface 11 and will not affect the optical performance of the light incident surface 11 (lens). The structure is simple. In addition, the screws that fall during installation will first fall into the above-mentioned mounting space, which can prevent the screws from falling into the headlight, thus avoiding scratches on the headlight. It is also easier to remove the screws than those that fall into the interior of the headlight.

[0063] It should be noted that, in some embodiments, in order to further prevent the screw from falling from the top of the mounting portion 20 to other places, an upward ( Figure 1 The convex portion 26 protrudes from the second surface 24 (perspective view), but is not limited thereto. In addition, in some embodiments, the stabilizing portion 30 also extends downward ( Figure 1The stabilizing portion 30 extends from the mounting portion 20 to further strengthen the stable connection between the mounting portion 20 and the main body, while also forming a space below the mounting portion 20. When the lens is mounted on the mounting surface of the headlight, the downwardly extending portion of the stabilizing portion 30 can confine the lens to the headlight (when the mounting portion 20 is mounted on the mounting surface or mounting base of the headlight, the stabilizing portions 30 on both sides are clamped between the mounting bases on both sides, thereby limiting the position of the lens in its length direction), ensuring the stability of the lens before tightening the screw and enabling positioning of the mounting position of the threaded through hole 21.

[0064] In one embodiment, the mounting portion 20 is further provided with a positioning hole 25 for locating the mounting position of the threaded through hole 21. In actual production, a latch is provided at the lens mounting location on the headlight. When installing the lens, the latch is inserted into the positioning hole 25, and the threaded through hole 21 is now positioned precisely at its mounting location. This simple structure effectively improves lens installation efficiency.

[0065] On the other hand, the present application also relates to a vehicle lamp comprising any one of the aforementioned lenses.

[0066] By adopting the technical solution provided in the embodiment of the present application, a through groove 22 is provided on the hole wall of the threaded through hole 21, and the through groove 22 passes through the mounting portion 20, which can release the stress when the screw is tightened and avoid cracking of the mounting portion 20 (threaded through hole 21); the through groove 22 includes a first groove section 221 and a second groove section 222 adjacent to each other, and the groove wall of the connected first groove section 221 and the groove wall of the second groove section 222 are not coplanar, and the groove width of the first groove section 221 and the second groove section 222 gradually increases in the direction from the first groove section 221 to the second groove section 222, and the groove width of the second groove section 222 is greater than the groove width of the first groove section 221. Such a setting avoids cracking of the mounting portion 20 (threaded through hole 21) while also avoiding damage to the lens (threaded through hole 21) during demolding, thereby improving the product yield and reducing production costs.

[0067] In the various embodiments of this application, unless otherwise specified or logically conflicting, the terms or descriptions between different embodiments are consistent and can be referenced from each other. The technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships. In this application, "at least one" means one or more, and "more" means two or more.

[0068] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

[0069] The above is a detailed introduction to the lens and headlight provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application and its core ideas. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present application.

Claims

1. A lens, characterized in that: include: ontology; and A mounting portion, provided on the body; In which, the mounting portion is provided with a threaded through hole, and the hole wall of the threaded through hole is provided with a through groove running through the mounting portion to separate the hole wall of the threaded through hole; the groove width of the through groove gradually increases along the axial direction of the threaded through hole, and the through groove includes a first groove segment and a second groove segment adjacent to each other, and the groove walls of the connected first groove segments are not coplanar with the groove walls of the second groove segments; the groove width dimension of the end of the first groove segment away from the second groove segment is d1㎜, the groove width dimension of the connection between the first groove segment and the second groove segment is d2㎜, and the groove width dimension of the end of the second groove segment away from the first groove segment is d3㎜, satisfying: d3>d2>d1.

2. The lens according to claim 1, wherein The through slot has a symmetrical reference plane; The first slot section has two first walls arranged opposite to each other, and the second slot section has two second walls arranged opposite to each other, the two first walls are symmetrically arranged on both sides of the symmetry reference plane, and the two second walls are symmetrically arranged on both sides of the symmetry reference plane; The included angle between the first wall and the symmetry reference plane is α, and the included angle between the second wall and the symmetry reference plane is β, satisfying: β>α.

3. The lens according to claim 2, wherein 1°≤α≤5°，5°≤β≤15°。 4. The lens according to claim 3, wherein α＝3°，β＝10°。 5. The lens according to claim 4, wherein 0.5≤d1≤1.1, 0.9≤d2≤1.5, 1.2≤d3≤2.

0.

6. The lens according to claim 1, wherein In the axial direction of the threaded through hole, two opposite surfaces of the mounting portion are a first surface and a second surface, and the first surface intersects with the first groove section; The first slot section has two first walls arranged opposite to each other, and the second slot section has two second walls arranged opposite to each other; An included angle between the first wall and the first surface is δ, and an included angle between the second wall and the second surface is γ, satisfying: δ+γ>180°.

7. The lens according to claim 6, wherein 85°≤δ≤89°, 95°≤γ≤105°.

8. The lens according to claim 2 or 6, characterized in that The included angle between the first wall and the second wall is θ, which satisfies the following conditions: 166°≤θ<180°, θ=173°.

9. The lens according to claim 1, wherein In the axial direction of the threaded through hole, two opposite surfaces of the mounting portion are a first surface and a second surface, and the first surface intersects with the first groove section; The main body has a light incident surface and a light emitting surface that are oppositely arranged, and the first surface is perpendicular to the light incident surface.

10. The lens according to claim 9, wherein It also includes a stabilizing portion, which is arranged on the opposite side surfaces of the two mounting portions, and extends and protrudes from the second surface along the axial direction of the threaded through hole.

11. The lens according to any one of claims 1 to 7, 9 and 10, wherein: The mounting portion is further provided with a positioning through hole for locating the mounting position of the threaded through hole.

12. A vehicle lamp, characterized in that: Comprising the lens according to any one of claims 1 to 11.

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