A light guide nut

Abstract

A light guide nut is used to fix the end of the light guide, including a guide part, a lamp body assembly part, a light guide assembly part and a heat sink assembly part. The light guide nut is adapted to the light guide tube through the guide part; the light guide nut is limited in the radial direction of the light guide through the lamp body assembly part and the light guide assembly part; the light guide nut is limited in the axial direction of the light guide through the light guide assembly part; and the light guide nut is limited in the axial and radial directions and fixed through the heat sink assembly part. The light guide nut of the present invention effectively solves the problem of heat dissipation difficulty of LED at the end of the light guide by selecting PC-HT material and combining the setting of a certain distance between the light guide and the heat sink light source, and can well prevent the occurrence of phenomena such as light guide burning and fogging. At the same time, accurate positioning of the light guide is achieved through structural settings.

Description

Technical Field

[0001] The invention belongs to the field of automobile assembly parts, and in particular relates to a light guide nut. Background Art

[0002] With the popularization of LED lighting technology, light guides are often used as a common light-emitting form for DRL, PL, and FTSL. However, the existing installation of light guides has problems such as light guide movement, burning and fogging, and also brings problems such as difficulty in LED heat dissipation.

[0003] At the same time, since the gap between the light guide and the LED is only 1 to 2 mm, the gap is close, and the power of the LED light source is relatively large. How to dissipate the heat of the light guide is a difficult point in the design of light guide lighting.

[0004] The utility model application with application number: 201721662729.0 discloses "a fixing structure for co-positioning multiple optical conductors", including a multi-head optical conductor, an optical nut, a lamp body, a positioning pin and a heat sink with LEDs fixed thereon. The end of the lamp body is a U-shaped structure, the optical nut is arranged at the inner end of the lamp body, the multi-head optical conductor is inserted into the lamp body from the other end, the optical nut is sleeved at the end of the multi-head optical conductor, and the heat sink is sleeved at the outer end of the lamp body. The optical nut includes a chassis, a nut ring and a rotating plate. The chassis is arranged at the bottom of the nut ring, and the chassis is movably connected to the nut ring. The plurality of rotating plates are arranged on the outer wall of the nut ring, and the rotating plate and the nut ring are integrally formed. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a light guide nut, and its technical solution is as follows:

[0006] A light guide nut, used for fixing the end of a light guide, comprises a guide portion (1), and is characterized in that it also comprises:

[0007] A lamp body assembly part (2), a light guide assembly part (3) and a heat sink assembly part (4),

[0008] The light guide nut

[0009] Forming adaptation with the light guide through the guide part (1);

[0010] The lamp body assembly part and the light guide assembly part jointly form a limit for the light guide nut along the radial direction of the light guide;

[0011] The light guide assembly portion forms a limit on the light guide nut along the axial direction of the light guide;

[0012] The axial and radial limiting and fixing of the light guide nut are achieved through the heat sink assembly part.

[0013] A light guide nut according to the present invention is characterized in that:

[0014] A distance L is formed between the end face of the heat sink mounting portion of the optical nut and the end face of the heat sink provided in the LED light source, and the range of L is [8.5, 20] mm.

[0015] A light guide nut according to the present invention is characterized in that:

[0016] The optical nut is made of PC-HT material.

[0017] A light guide nut according to the present invention is characterized in that:

[0018] The guide portion is provided with a symmetrically opened opening (5), which extends from the starting end of the guide portion to the lamp body assembly portion, thereby facilitating the assembly of the light guide.

[0019] A light guide nut according to the present invention is characterized in that:

[0020] The lamp body assembly portion is arranged in a cylindrical ring shape, and bosses (6) are symmetrically arranged on the outer wall of the cylindrical ring;

[0021] The light guide assembly part is formed in the transition section from the lamp body assembly part to the heat sink assembly part and is hollowed out;

[0022] The hollowing is arranged in a counterclockwise direction along the radial direction of the light guide, and transitions from a first hollowing width area (7) to a second hollowing width area (8) through a slope surface;

[0023] The axial width of the first hollow width area (7) is greater than the axial width of the second hollow width area (8);

[0024] The lamp body assembly part and the light guide assembly part cooperate with each other through the boss (6) and the second hollow width area (8) to limit the degree of freedom of rotation of the light guide nut along the radial direction of the light guide and achieve positioning;

[0025] The second hollow width area (8) realizes the limitation and positioning of the degree of freedom of translation of the light guide nut along the axial direction of the light guide.

[0026] A light guide nut according to the present invention is characterized in that:

[0027] The heat sink assembly part (4) is fixed to the heat sink via a provided ear shaft (9), thereby achieving positioning formed by limiting the axial translation freedom and radial translation freedom of the optical nut.

[0028] A light guide nut according to the present invention is characterized in that:

[0029] Reinforcing ribs (10) are provided on the heat sink assembly portion (4) and at both side ends of the ear shaft (9).

[0030] A light guide nut according to the present invention is characterized in that:

[0031] The reinforcing rib (10) is hollowed out and is used to increase elasticity, thereby strengthening the fastening and locking by increasing friction.

[0032] A light guide nut according to the present invention is characterized in that:

[0033] The guide portion (1), the lamp body assembly portion (2), the light guide assembly portion (3) and the heat sink assembly portion (4) of the light guide nut are integrally injection molded.

[0034] The light guide nut of the present invention is made of PC-HT material of the PC (polyglycolic acid ester) family, which has excellent impact resistance and transparency, good mechanical properties and electrical insulation properties, a wide range of operating temperatures, high dimensional stability and high creep resistance, and the light guide is arranged at a certain distance; while the material selection indirectly prevents heat accumulation, the light guide and the heat sink light source are arranged at a certain distance, which expands the heat accumulation space and is more conducive to heat dissipation; the combination of the two effectively solves the problem of difficult heat dissipation of LEDs at the ends of the light guides, and can well prevent the occurrence of phenomena such as burning and fogging of the light guide.

[0035] The light guide nut of the present invention achieves the positioning of the light guide nut as a whole through the combination of several assembly parts and the restriction of the corresponding degrees of freedom generated by cooperation, solves the phenomenon of light guide head movement, realizes the effective positioning of the light guide, and responds to the light effect from the installation end. In addition, the light guide nut of the present invention also achieves the uniformity and coordination of the overall positioning of the light guide nut through the light guide guide part, the lamp body assembly part, the light guide assembly part and the heat sink assembly part, and realizes the overall positioning of the light guide nut through the cooperation of various parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the present invention;

[0037] Figure 2 is a side view of the present invention;

[0038] Figure 3 It is an assembly schematic diagram of the present invention.

[0039] In the figure,

[0040] 1- is the guide part;

[0041] 2- is the lamp body assembly part;

[0042] 3- is the light guide assembly part;

[0043] 4- is the radiator assembly part;

[0044] 5- for opening;

[0045] 6- is a boss;

[0046] 7- is the first hollow width area;

[0047] 8- is the second hollow width area;

[0048] 9- is a trunnion;

[0049] 10- is the reinforcing rib. DETAILED DESCRIPTION

[0050] Next, a light guide nut of the present invention is further described in detail according to the accompanying drawings and specific implementation methods.

[0051] like Figure 1 , 2 , 3, a light guide nut for fixing the end of a light guide, comprising a guide portion (1), and:

[0052] A lamp body assembly part (2), a light guide assembly part (3) and a heat sink assembly part (4),

[0053] The light guide nut

[0054] Forming adaptation with the light guide through the guide part (1);

[0055] The lamp body assembly part and the light guide assembly part jointly form a limit for the light guide nut along the radial direction of the light guide;

[0056] The light guide assembly portion forms a limit on the light guide nut along the axial direction of the light guide;

[0057] The axial and radial limiting and fixing of the light guide nut are achieved through the heat sink assembly part.

[0058] in,

[0059] A distance L is formed between the end face of the heat sink mounting portion of the optical nut and the end face of the heat sink provided in the LED light source, and the range of L is [8.5, 20] mm.

[0060] in,

[0061] The optical nut is made of PC-HT material.

[0062] in,

[0063] The guide portion is provided with a symmetrically opened opening (5), which extends from the starting end of the guide portion to the lamp body assembly portion, thereby facilitating the assembly of the light guide.

[0064] in,

[0065] The lamp body assembly portion is arranged in a cylindrical ring shape, and bosses (6) are symmetrically arranged on the outer wall of the cylindrical ring;

[0066] The light guide assembly part is formed in the transition section from the lamp body assembly part to the heat sink assembly part and is hollowed out;

[0067] The hollowing is arranged in a counterclockwise direction along the radial direction of the light guide, and transitions from a first hollowing width area (7) to a second hollowing width area (8) through a slope surface;

[0068] The axial width of the first hollow width area (7) is greater than the axial width of the second hollow width area (8);

[0069] The lamp body assembly part and the light guide assembly part cooperate with each other through the boss (6) and the second hollow width area (8) to limit the degree of freedom of rotation of the light guide nut along the radial direction of the light guide and achieve positioning;

[0070] The second hollow width area (8) realizes the limitation and positioning of the degree of freedom of translation of the light guide nut along the axial direction of the light guide.

[0071] in,

[0072] The heat sink assembly part (4) is fixed to the heat sink via a provided ear shaft (9), thereby achieving positioning formed by limiting the axial translation freedom and radial translation freedom of the optical nut.

[0073] in,

[0074] Reinforcing ribs (10) are provided on the heat sink assembly portion (4) and at both side ends of the ear shaft (9).

[0075] in,

[0076] The reinforcing rib (10) is hollowed out and is used to increase elasticity, thereby strengthening the fastening and locking by increasing friction.

[0077] in,

[0078] The guide portion (1), the lamp body assembly portion (2), the light guide assembly portion (3) and the heat sink assembly portion (4) of the light guide nut are integrally injection molded.

[0079] Embodiment and working process:

[0080] Working process

[0081] The light guide passes through the opening of the guide part of the light guide nut, enters the light guide nut, and passes through the lamp body assembly part, the light guide assembly part and the heat sink assembly part in sequence, until it completely passes through the hollow part of the light guide nut and reaches the adapter on the heat sink.

[0082] Then manually rotate the light guide nut so that each of its assembly parts reaches a position that matches the corresponding parts at each set position: the joint between the guide part and the lamp body assembly part is used to realize the axial translation positioning of the lamp body. At the same time, when the boss of the lamp body assembly part rotates to match the convex point at the corresponding position on the lamp body, the limit protrusion set on the light guide for limiting the axial translation freedom of the light guide and the radial rotation freedom of the light guide is also rotated to the light guide assembly part and matched with it; at the same time, the heat sink assembly part is also fixed to the heat sink through the ear axis. After the assembly is completed, the light guide and the heat sink form an assembly distance of spacing L. This distance can expand the heat accumulation space and provide the necessary external environment for heat dissipation. Combined with the material selection of the light guide nut, the two are combined to prevent heat accumulation at the end of the light guide and prevent the light guide from burning and fogging.

[0083] Example 1

[0084] In this embodiment, the first hollow width area 7 is arranged in a trapezoidal shape, and the second hollow width area is arranged in a rectangular shape. In the direction in which the first hollow width area 7 extends to the second hollow width area 8, the spacing between the first hollow width areas is arranged to gradually decrease.

[0085] When the light guide enters the guide part of the light guide nut through the opening of the guide part of the light guide nut, the light guide nut is continuously pushed until the light guide passes through the lamp body mounting part 2 of the light guide nut and reaches the first hollow width area 7 of the light guide mounting part 3 of the light guide nut, and then the light guide nut is rotated so that the light guide nut and the light guide produce relative rotational motion along the radial direction of the light guide until the protrusion of the light guide reaches the second hollow width area 8 of the light guide mounting part 3, at which time the boss on the lamp body mounting part also reaches a position adapted to the convex point at the corresponding position of the lamp body, and through the cooperation of the second hollow width area and the convex point at the corresponding position of the lamp body, the rotational freedom of the light guide nut along the radial direction of the light guide is restricted, thereby realizing the radial positioning of the light guide nut; at the same time, the second hollow width area 8 also realizes the restriction of the freedom of the light guide nut to translate along the axial direction of the light guide, thereby realizing the positioning of the light guide nut in this direction.

[0086] Example 2

[0087] In this embodiment, reinforcing ribs 10 are provided at both side ends of the ear shaft 9 of the radiator assembly portion 4, and the reinforcing ribs 10 are hollowed out and used to increase elasticity, thereby strengthening the fastening and locking by increasing friction.

[0088] When the light guide reaches the axial position matched with each assembly part through the light guide nut, the light guide nut is rotated to make it produce radial relative rotational motion with the light guide nut, thereby completing the assembly of the light guide nut and the light guide. During the rotation process, when the lamp body and the lamp body assembly part of the light guide nut form an adaptive installation, the reinforcing ribs 10 arranged on both side ends of the ear axis can form a certain elastic deformation, thereby raising it by 1-2mm and directly pressing it on the corresponding position of the lamp body. Through this part of the setting, the friction between the light guide nut and the lamp body can be increased, and the fastening and locking of the lamp body and the light guide nut lamp body assembly part can be strengthened by increasing the friction (that is, strengthening the fastening of the light guide nut and the lamp body along the axial translation of the light guide).

[0089] The light guide nut of the present invention is made of PC-HT material of the PC (polyglycolic acid ester) family, which has excellent impact resistance and transparency, good mechanical properties and electrical insulation properties, a wide range of operating temperatures, high dimensional stability and high creep resistance, and the light guide is arranged at a certain distance; while the material selection indirectly prevents heat accumulation, the light guide and the heat sink light source are arranged at a certain distance, which expands the heat accumulation space and is more conducive to heat dissipation; the combination of the two effectively solves the problem of difficult heat dissipation of LEDs at the ends of the light guides, and can well prevent the occurrence of phenomena such as burning and fogging of the light guide.

[0090] In the above two embodiments, the light guide protrusion is rectangular with rounded corners, and its axial length is set to 3±0.05mm; its radial length is set to 2.5±0.05mm; the opening diameter range of the guide part of the light guide nut is the light guide diameter plus 0.05 to 0.07mm; the single-sided gap between the light guide and the light guide nut is set to 0.28mm-0.32mm (preferably 0.3mm).

[0091] The light guide nut of the present invention achieves the positioning of the light guide nut as a whole through the combination of several assembly parts and the restriction of the corresponding degrees of freedom generated by cooperation, solves the phenomenon of light guide head movement, realizes the effective positioning of the light guide, and responds to the light effect from the installation end. In addition, the light guide nut of the present invention also achieves the uniformity and coordination of the overall positioning of the light guide nut through the light guide guide part, the lamp body assembly part, the light guide assembly part and the heat sink assembly part, and realizes the overall positioning of the light guide nut through the cooperation of various parts.

Claims

1. A light guide nut for fixing the end of a light guide, comprising a guide portion (1), characterized in that Also included are: A lamp body assembly part (2), a light guide assembly part (3) and a heat sink assembly part (4), The light guide nut Forming adaptation with the light guide through the guide part (1); The lamp body assembly part and the light guide assembly part jointly form a limit for the light guide nut along the radial direction of the light guide; The light guide assembly portion forms a limit on the light guide nut along the axial direction of the light guide; The axial and radial positioning and fixation of the light guide nut are achieved through the heat sink assembly. The optical nut is made of PC-HT material; The guide portion is provided with a symmetrical opening (5), which extends from the starting end of the guide portion to the lamp body assembly portion, so as to facilitate the assembly of the light guide; The lamp body assembly portion is arranged in a cylindrical ring shape, and bosses (6) are symmetrically arranged on the outer wall of the cylindrical ring; The light guide assembly part is formed in the transition section from the lamp body assembly part to the heat sink assembly part and is hollowed out; The hollowing is arranged in a counterclockwise direction along the radial direction of the light guide, and transitions from a first hollowing width area (7) to a second hollowing width area (8) through a slope surface; The axial width of the first hollow width area (7) is greater than the axial width of the second hollow width area (8); The lamp body assembly part and the light guide assembly part cooperate with each other through the boss (6) and the second hollow width area (8) to limit the degree of freedom of rotation of the light guide nut along the radial direction of the light guide and achieve positioning; The second hollow width area (8) realizes the limitation and positioning of the degree of freedom of translation of the light guide nut along the axial direction of the light guide.

2. The optical nut according to claim 1, characterized in that: A distance L is formed between the end face of the heat sink mounting portion of the optical nut and the end face of the heat sink provided in the LED light source, and the range of L is [8.5, 20] mm.

3. The optical nut according to claim 1, characterized in that: The heat sink assembly part (4) is fixed to the heat sink via a provided ear shaft (9), thereby achieving positioning formed by limiting the axial translation freedom and radial translation freedom of the optical nut.

4. The optical nut according to claim 3, characterized in that: Reinforcing ribs (10) are provided on the heat sink assembly portion (4) and at both side ends of the ear shaft (9).

5. The optical nut according to claim 4, characterized in that: The reinforcing rib (10) is hollowed out and is used to increase elasticity.

6. The optical nut according to claim 1, characterized in that: The guide portion (1), the lamp body assembly portion (2), the light guide assembly portion (3) and the heat sink assembly portion (4) of the light guide nut are integrally injection molded.

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