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] The lens is one of the commonly used parts in the car lamp. In order to ensure the optical effect of the lens, polymethyl methacrylate is often used as the production material of the lens. In the prior art, when the lens is installed, screws are used to fix it at both ends of the lens. Since the impact resistance and surface hardness of polymethyl methacrylate material are slightly poor, when the screws are tightened, the threaded holes on the lens used for connection and fixing will crack, reducing the product yield.

[0003] Therefore, it is necessary to improve the existing technology. Summary of the invention

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

[0005] According to one aspect of the present application, the present application provides a lens, including a main body and a mounting portion, wherein the mounting portion 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 penetrating 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 end of the first groove section away from 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 end of the second groove section away from the first groove section 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°, 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, the first side intersects with the first slot 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; 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 relatively arranged, and the first side is perpendicular to the light incident side.

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

[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 lenses described above.

[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, and cracking of the mounting portion (threaded through hole) can be avoided; 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) and can also avoid tearing of the lens (threaded through hole) during demolding, thereby improving the product yield and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

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

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

[0021] Figure 3 It is a schematic diagram of the structure of another through groove provided in an embodiment of the present application.

[0022] Figure 4 It is a schematic diagram of a lens after demolding provided in an embodiment of the present application.

[0023] Figure 5 It is a schematic diagram of the structure of another through groove provided in an embodiment of the present application.

[0024] In the figure:

[0025] 10. Main body; 11. Light incident surface; 12. Light emitting surface;

[0026] 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. raised portion;

[0027] 30. Stability Department;

[0028] λ, symmetry reference plane. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The lens and the vehicle light in the present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] In the prior art, when the lens is fixed by screws, the lens may crack due to the lens material, thereby reducing the yield rate of the product. Even if the lens does not crack when installed, there is still a risk of cracking during later use, which affects the optical effect of the lens.

[0033] 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, and the mounting portion 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 penetrating 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 end of the first groove section away from 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 end of the second groove section away from the first groove section is d3㎜, satisfying: d3>d2>d1. By setting a through groove on the hole wall of the threaded through hole, and the through groove passes through the mounting part, the stress when the screw is tightened can be released, and the mounting part (threaded through hole) is avoided from cracking; the through groove includes a first groove section and a second groove section adjacent to each other, the groove wall of the connected first groove section and the groove wall of the second groove section are not coplanar, 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 a setting avoids the cracking of the mounting part (threaded through hole) and can also avoid the tearing of the lens (threaded through hole) when demolding, thereby improving the product yield and reducing the production cost. The following is a detailed explanation.

[0034] See also Figure 1 and Figure 3In one embodiment, the lens includes a body 10 and a mounting portion 20, the mounting portion 20 is arranged on the body 10, and the body 10 is installed in the car lamp through the mounting portion 20, and 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 matching the threaded through hole 21; in this embodiment, a through groove 22 penetrating 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, and when the lens is installed (i.e., 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 in 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 widths of the first groove section 221 and the second groove section 222 gradually increase in the direction from the first groove section 221 to the second groove section 222, and the width of the second groove section 222 is greater than the 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 and Figure 4 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. When the groove walls on both sides are subjected to unequal forces, the two sides of the through groove 22 will be misaligned. When 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 the lens to be strained. The specific demolding direction is, for example, Figure 1 In the perspective, the mold moves upward to demold the lens. In the present 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 groove walls of the first groove section 221 and the second groove section 222 connected to the mold respectively have an angle with the relative friction forces f1 and f2, so that part of the two friction forces f1 and f2 are offset and the combined force is reduced, thereby reducing the probability of the product being pulled when demolding), and also improving the product yield and reducing production costs.

[0035] 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 The groove wall on the right side of the through groove 22 shown in the figure, the groove wall of the second groove section 222 is more inclined to the right side than the groove wall of the first groove section 221; Figure 3 The groove wall on the left side of the middle through groove 22 is not specifically limited in this embodiment, as long as it does not interfere with the upward demolding 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.

[0036] 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 and the threaded through hole 21 are matched. The through groove 22 is provided to avoid cracking of the mounting portion 20 due to excessive stress. The groove width of the first groove section 221 and the groove width of the second groove section 222, i.e., the lateral width of the through groove 22 ( Figure 3 In addition, it should be noted that, in the present embodiment, the slot width of the through slot 22 gradually increases linearly, that is, the slot wall of the through slot 22 is arranged in a plane, and the following embodiments are all described by taking the slot wall of the through slot 22 arranged in a plane as an example; in some embodiments, the slot width of the through slot 22 gradually increases nonlinearly, for example, the slot width increases firstly and then decreases in the direction from the first slot section 221 to the second slot section 222, and in this way, the slot wall of the through slot 22 is arranged in a concave curved surface, or in some embodiments, the increase is firstly small and then large, and the slot wall of the through slot 22 is arranged in a convex curved surface, and it is not limited thereto.

[0037] See also Figure 2 In one embodiment, the through slot 22 has a symmetric reference plane (eg Figure 2 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, 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 wall 2222 has two second walls 2222 arranged opposite to the symmetrical reference plane Figure 2As shown, in order 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 to obtain α and β), respectively, satisfying: β>α. The through groove 22 is symmetrically arranged relative to the symmetry reference plane, which is beneficial to the design of the lens mold and effectively improves the uniformity of force when the screw is connected to the threaded through hole 21.

[0038] 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 the groove walls on both sides of the through groove 22 (i.e., the first wall 2211 and the second wall 2222) are all set in this way. When β>α, the opening degree of the second groove section 222 is greater than the opening degree of the first groove section 221, 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, and 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 demoulded.

[0039] Referring to 2, in one embodiment, 1°≤α≤5°, 5°≤β≤15°, β>α, α is, for example, 1°, 2°, 3°, 4°, 5°, etc., β is, for example, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, etc. In this way, within the above value range, the arrangement 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 lamp (the lens will not fall off from the connection with the lamp), but also ensure that the two sides of the through groove 22 will not be strained during demolding, and can also release stress to avoid cracking of the lens.

[0040] The performance of the technical solution provided in the embodiments of the present application is evaluated in conjunction with specific embodiments.

[0041] It should be noted that 20 samples were tested for each angle of the following embodiments. The screws were tightened in the threaded through hole 21 of the lens by automatic tightening and manual tightening, so as to form a comparison; the tightening torque when the screws were tightened automatically was 0.8Nm and the speed was 200LPM; the tightening torque when the screws were tightened manually was 1.2Nm and the speed was 500LPM. Observe whether the samples with different angles are cracked (visual inspection), and conduct a vibration test on the lens to record whether the lens falls off (visual inspection). Specific parameters and test results are detailed in Table 1.

[0042] Table 1

[0043]

[0044] It should be noted that, as can be seen from Table 1, the above table provides embodiments in which α is 1°, 2°, 3°, 4°, and 5°, and a comparative example in which α is 6°, and each α value corresponds to an embodiment in which β is 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, and 15°, and a comparative example in which β is 2°, 3°, 4°, and 16°; wherein, "×" in the table indicates that the product cannot be prepared, and "√" 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 the lens will also crack; when the values ​​of α and β are large, the lens will fall off during the vibration test, resulting in a fixation failure (i.e., the connection between the screw and the threaded through hole 21 fails). 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 during demolding, no strain will occur on both sides of the through groove 22, and at the same time, it can release stress and avoid cracking of the lens.

[0045] 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), and the actual product is more prone to scratches, which reduces the yield rate; when the difference between α and β is large, the first wall 2211 and the second wall 2222 are more inclined to be coplanar, and the resultant force between the first wall 2211 and the second wall 2222 and the mold will be larger. 22, the relative friction force between the first wall 2211 and the second wall 2222 and the mold will be smaller (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 during demolding, and some of the components will be offset, that is, the resultant force is smaller at this time), which can be more conducive to smooth demolding, but 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 will be more prone to vibration and fall off than when the difference between α and β is moderate. Therefore, the difference between α and β is moderate, and 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 lamp (the lens will not fall off from the connection with the lamp), and it can also ensure that the two sides of the through groove 22 will not be strained during demolding.

[0046] 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 strained during demolding. Preferably, d1=0.8, d2=1.2, and d3=1.6.

[0047] See also Figure 5 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, and 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 5 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°.

[0048] It should be noted that from Figure 5 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 5 The mounting portions 20 on both sides of the through slot 22 are pentagons, 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 as shown in the figure 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 5 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 to ensure the stability of the lens installation. The second groove section 222 with a larger groove width can avoid strain on both sides of the through groove 22 when the lens is demolded.

[0049] 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. In this way, within the above value range, the arrangement of the first groove section 221 and the second groove section 222 can ensure the stability of the connection between the lens and the lamp (the lens will not fall off from the connection with the lamp), and can also ensure that the two sides of the through groove 22 will not be strained during demoulding, and can also release stress to avoid cracking of the lens.

[0050] The performance of the technical solution provided in the embodiments of the present application is evaluated in conjunction with specific embodiments.

[0051] It should be noted that 20 samples were tested for each angle of the following embodiments. The screws were tightened in the threaded through hole 21 of the lens by automatic tightening and manual tightening, so as to form a comparison; the tightening torque when the screws were tightened automatically was 0.8Nm and the speed was 200LPM; the tightening torque when the screws were tightened manually was 1.2Nm and the speed was 500LPM. Observe whether the samples with different angles are cracked (visual inspection), and conduct a vibration test on the lens to record whether the lens falls off (visual inspection). Specific parameters and test results are detailed in Table 2.

[0052] Table 2

[0053]

[0054]

[0055] It should be noted that, as can be seen from Table 2, the above table provides embodiments where δ is 85°, 86°, 87°, 88°, and 89°, and a comparative example where α is 84°, and each δ value corresponds to an embodiment where γ is 95°, 96°, 97°, 98°, 99°, 100°, 101°, 102°, 103°, 104°, and 105°, and a comparative example where β is 92°, 93°, 94°, and 106°; wherein, "×" in the table indicates that the product cannot be prepared, and "√" in the table indicates that the lenses have passed the cracking test and the vibration test, and no lens has cracked or fallen off in the sample. In addition, it can be seen from the table that when the value of δ is large and the value of γ is small, the actual product will be strained, and the lens will also crack; when the value of δ is small and the value of γ is large, the lens will fall off during the vibration test, resulting in a fixation failure (i.e., the connection between the screw and the threaded through hole 21 fails). 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, no strain will occur on both sides of the through groove 22, and at the same time, it can release stress and avoid cracking of the lens.

[0056] 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 5 The groove wall on the left side of the middle, 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 f1 of the mold relative to the first wall 2211 and the friction f2 of the mold relative to the second wall 2222 tend to be collinear during demolding, and the resultant force is larger at this time), and the actual product is relatively more prone to scratches, reducing the yield rate; when the difference between δ and γ is large, there is a certain angle between the first wall 2211 and the second wall 2222, at this time, the first wall 2211 and the second wall 2 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 of the lens in the production process is higher.

[0057] See also 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 no strain will occur on both sides of the through groove 22 during demolding. Preferably, θ=173°.

[0058] 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 are more likely 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 are more likely to be colinear during demolding, and the resultant force is larger at this time). The actual product is more likely to be scratched relative to θ=173°, which reduces the yield rate. When θ is too small, the first wall 2211 and the second wall 2222 are more likely to be coplanar. The resultant force of the relative friction between the first wall 2211 and the second wall 2222 and the mold will be smaller (there is an angle between the friction between the mold and the first wall 2211 and the friction between the mold and the second wall 2222 during demolding, and some of the components will be offset, that is, the resultant force is smaller at this time). Although it is more conducive to smooth demolding, 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, and the insufficient tightening force of the screw on the threaded through hole 21. After the lens is installed, it will be more likely to fall off due to vibration than when θ=173°. Therefore, θ=173° has a higher yield rate in the lens production process. It can ensure the stability of the connection between the lens and the headlight (the lens will not fall off from the connection with the headlight), and it can also ensure that the two sides of the through groove 22 will not be strained during demolding.

[0059] See also Figure 1 In one embodiment, the body 10 has a light incident surface 11 and a light emitting surface 12 that are disposed opposite to each other, and two mounting portions 20 are provided, and the two mounting portions 20 are respectively disposed at both ends of the length direction of the light incident surface 11. The mounting portion 20 is disposed on the light incident surface 11. Such an arrangement can reduce the space occupied by the lens in the length direction of the light incident surface 11 without affecting the light passing through the light incident surface 11, which is beneficial to the arrangement of other components inside the headlight.

[0060] 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.

[0061] In one embodiment, in the axial direction of the threaded through hole 21, the mounting portion 20 has two surfaces disposed opposite to each other, 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 In the present embodiment, the first surface 23 is perpendicular to the light incident surface 11. Such a configuration can limit the angle at which the lens is installed in the headlight. When installing the lens, the first surface 23 is brought into contact with the mounting surface on the headlight for installation, and then the screws are tightened and fixed. Because the first surface 23 is perpendicular to the light incident surface 11, after the lens is installed, the angle of the light incident surface 11 relative to the headlight is limited, the structure is simple, and the use is convenient; and the first surface 23 is perpendicular to the light incident surface 11, which is conducive to the processing and molding of the mold, and also facilitates the smooth demolding of the lens after production.

[0062] 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.

[0063] See also Figure 1 In one embodiment, the lens further includes a stabilizing portion 30, which is disposed on the opposite sides of the two mounting portions 20, and in the axial direction of the threaded through hole 21, the stabilizing portion 30 extends and protrudes from the second surface 24. By providing the stabilizing portion 30, the stability between the mounting portion 20 and the main body can be enhanced, the stability of the lens after installation is ensured, and the stability of the light can be ensured, which effectively improves the use effect of the headlight; in addition, the stabilizing portion 30, the main body and the mounting portion 20 will enclose an installation space ( Figure 1 When installing the screw, it is inevitable that the screw will fall off the screwdriver or other tightening tools. By setting the above-mentioned installation space, the screw can be separated from the light incident surface 11, that is, the screw that falls during the installation will not scratch the light incident surface 11, and will not affect the optical performance of the light incident surface 11 (lens), and the structure is simple. In addition, the screw that falls during the installation will preferentially fall into the above-mentioned installation space, which can prevent the screw from falling into the car light, avoid scratching the car light, and is more convenient to remove than the screw that falls into the inside of the car light.

[0064] 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 stabilizing portion 30 also extends downward (in a certain angle of view) from the convex portion 26 of the second surface 24, but is not limited thereto. Figure 1The stabilizing portion 30 extends from the mounting portion 20 to the main body, further strengthening the stable connection between the mounting portion 20 and the main body. A space is also formed 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 on 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), thereby ensuring the stability of the lens before tightening the screws and being able to locate the installation position of the threaded through hole 21.

[0065] In one embodiment, the mounting portion 20 is further provided with a positioning through hole 25, which is used to locate the mounting position of the threaded through hole 21. In actual products, a latch is provided at the position for mounting the lens on the headlight. When the lens is mounted, the latch is inserted into the positioning through hole 25, and the threaded through hole 21 is just at its mounting position. The structure is simple, and the lens mounting efficiency is effectively improved.

[0066] On the other hand, the present application also relates to a vehicle lamp, comprising any one of the aforementioned lenses.

[0067] 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, so that the stress when the screw is tightened can be released, thereby avoiding 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, 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 widths of the first groove section 221 and the second groove section 222 gradually increase 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) and can also avoid strain on the lens (threaded through hole 21) during demolding, thereby improving the product yield and reducing production costs.

[0068] In the various embodiments of the present application, if there is no special explanation and logical conflict, the terms or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships. In the present application, "at least one" means one or more, and "more" means two or more.

[0069] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

[0070] The lens and the headlight provided in the embodiments of the present application are introduced in detail above. 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, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A lens, characterized in that: include: The entity; and A mounting portion, disposed on the 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 penetrating 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 end of the first groove section away from the second groove section is d1㎜, the groove width dimension of the connection between the first groove section and the second groove section is d2㎜, and the groove width dimension of the end of the second groove section away from the first groove section is d3㎜, satisfying: d3>d2>d1.

2. The lens according to claim 1, wherein: The through slot has a symmetry 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, characterized in that 1°≤α≤5°，5°≤β≤15°。 4. The lens according to claim 3, characterized in that α＝3°，β＝10°。 5. The lens according to claim 4, characterized in that 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; The included angle between the first wall and the first surface is δ, and the included angle between the second wall and the second surface is γ, which satisfies: δ+γ>180°.

7. The lens according to claim 6, characterized in that 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: 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 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 sides of the two mounting portions, and in the axial direction along the threaded through hole, the stabilizing portion extends and protrudes from the second surface.

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

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

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