A locking fixed optical structure

Abstract

The present invention discloses a lock-fixed optical structure, comprising a heat sink, a light source board, a lens bracket and a lens group, wherein the light source board is fixed on the heat sink, the lens group is fixed on the lens bracket, two parallel sides of the lens bracket are provided with lock grooves, the lens bracket and the heat sink are connected to the lens bracket through a lock assembly, the lock assembly comprises an adjustment lock and a locking screw, one end of the adjustment lock is connected to the heat sink, the other end of the adjustment lock is inserted into the lock groove and can be adjusted back and forth in a straight line along the lens arrangement direction, and the other end of the adjustment lock has a screw hole perpendicular to the reciprocating adjustment direction of the adjustment lock and suitable for the locking screw to pass through, and the locking screw passes through the screw hole and abuts and fixes the lens bracket. The present invention can realize the distance adjustment between the lens bracket and the heat sink, and indirectly control the distance between the lens group and the light source board, and is simple to install and has a stable and reliable structure.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle lamps, and in particular to a lock-fixed optical structure, which is mainly used for lighting of a front lamp of a vehicle. Background Art

[0002] With the continuous development of automotive lighting technology, the requirements for lighting fixtures are becoming more and more precise. The distance between the light source board and the lens in the automotive lamp has a great influence on the lighting effect. Due to installation errors and structural differences of different models, the optimal distance between the lens and the light source board is usually not determined when each automotive lamp is installed. The current automotive lamp structure cannot adjust the distance between the lens and the light source board during installation, resulting in the lighting effect not being able to reach the optimal state. Therefore, it is necessary to design an optical module that can effectively adjust the lens position during installation so that the distance between the lens and the light source board reaches the optimal value and the best lighting effect is achieved. Summary of the invention

[0003] In order to solve the technical problem in the prior art that the distance between the lens and the light source panel cannot be adjusted during the installation process, resulting in the lighting effect not being able to reach the optimal state, the present invention provides a lock-fixed optical structure to solve the above problem.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a lock-fixed optical structure, including a heat sink, a light source board, a lens bracket and a lens group, the light source board is fixed on the heat sink, the lens group is fixed on the lens bracket, and the lens group includes a plurality of lenses arranged in sequence from the light source board to the outside; two parallel side surfaces of the lens bracket are provided with locking grooves, the lens bracket and the heat sink are connected to the lens bracket through a lock assembly, the lock assembly includes an adjustment lock and a locking screw, one end of the adjustment lock is connected to the heat sink, the other end of the adjustment lock is inserted into the locking groove and can be reciprocated linearly adjusted along the lens arrangement direction, and the other end of the adjustment lock has a screw hole that is perpendicular to the reciprocating adjustment direction of the adjustment lock and is suitable for the locking screw to pass through, and the locking screw passes through the screw hole and is abutted and fixed to the lens bracket.

[0005] Furthermore, bending hooks are provided on both sides of the radiator, and one end of the adjusting lock is provided with an outer sleeve suitable for inserting the bending hook, and the matching surface of the outer sleeve and the bending hook is perpendicular to the central axis of the locking screw and the adjustment direction of the adjusting lock in the locking groove.

[0006] Furthermore, the main board of the radiator is a rectangular panel, and the outer peripheral surface of the outer sleeve is a prismatic surface. When the adjustment lock is matched with the bending hook, the outer sleeve fits against the outer edge of the main board.

[0007] Furthermore, lock mounting parts are fixed on both sides of the lens bracket, and the lock groove is a U-shaped groove that passes through the outer surface of the lock mounting part, and the opening of the U-shaped groove faces the bottom surface of the lens bracket.

[0008] Furthermore, the adjustment lock includes a connecting plate connected to the outer sleeve and a limiting column extending from the end surface of the connecting plate in the direction of the relatively arranged adjustment lock, and the screw hole passes through the limiting column and the connecting plate.

[0009] Furthermore, the bending directions of the bending hooks on two parallel side surfaces of the heat sink are opposite.

[0010] Furthermore, the heat sink includes a main board and a plurality of fins fixed to the main board and arranged in an array.

[0011] Furthermore, the thickness of each fin is 0.5-0.8 mm, and the distance between adjacent fins is 3 mm-5 mm.

[0012] Furthermore, the lens group includes an inner lens, a middle lens and an outer lens arranged in sequence from the light source plate outward, the light incident surface of the inner lens is a plane and the light emitting surface is a convex surface, the middle lens is a hyperbolic lens, and the outer lens is a concave-convex lens.

[0013] Furthermore, a light shield is provided on the outer periphery of the inner lens.

[0014] The beneficial effects of the present invention are:

[0015] The lock-fixed optical structure described in the present invention utilizes a lock assembly to fix the lens bracket to the heat sink, wherein the adjustable lock can be connected to the heat sink and can adjust the position in the lock groove along the lens arrangement direction, and finally the adjustable lock is fixed to the lens bracket by a locking screw, thereby realizing the distance adjustment between the lens bracket and the heat sink, and indirectly controlling the distance between the lens group and the light source board, the installation is simple, and the structure is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 is a stereogram of a specific implementation of the lock-fixed optical structure of the present invention;

[0018] Figure 2 is an exploded view of a specific implementation of the lock-fixed optical structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the installation of the adjustment lock buckle and the radiator in the present invention;

[0020] Figure 4is a schematic diagram of a lens bracket in the present invention;

[0021] Figure 5 The figure is a schematic diagram of the matching relationship between the lens bracket and the lens group in the present invention. In the figure, 1, heat sink, 101, main board, 102, fin, 103, bending hook, 2, light source board, 3, lens bracket, 301, lock slot, 302, lock buckle mounting part, 4, lens group, 401, inner lens, 402, middle lens, 403, outer lens, 5, adjustment lock buckle, 501, outer sleeve, 502, connecting plate, 503, limit column, 6, locking screw, 7, light shield. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] like Figure 1-Figure 4 As shown, a locking fixed optical structure includes a heat sink 1, a light source board 2, a lens bracket 3 and a lens group 4, wherein the light source board 2 is fixed on the heat sink 1, and the lens group 4 is fixed on the lens bracket 3, and the lens group 4 includes a plurality of lenses arranged sequentially from the light source board 2 to the outside; two parallel sides of the lens bracket 3 are provided with locking grooves 301, and the lens bracket 3 and the heat sink 1 are connected to the lens bracket 3 through a locking assembly, and the locking assembly includes an adjustment lock 5 and a locking screw 6, one end of the adjustment lock 5 is connected to the heat sink 1, and the other end of the adjustment lock 5 is inserted into the locking groove 301 and can be adjusted back and forth in a straight line along the lens arrangement direction, and the other end of the adjustment lock 5 has a screw hole perpendicular to the reciprocating adjustment direction of the adjustment lock 5 and suitable for the locking screw 6 to pass through, and the locking screw 6 passes through the screw hole and abuts against the lens bracket 3 and is fixed. The material of the adjustment lock 5 is preferably PBT-GF30.

[0024] During installation, first fix the light source board 2 on the heat sink 1, and the lens group 4 on the lens bracket 3. Then place the heat sink 1 on the fixed fixture, and the lens bracket 3 on the movable fixture. By accurately adjusting the position of the movable fixture, the distance between the lens bracket 3 and the heat sink 1 reaches the specified value. Then connect the adjustment lock 5 between the lens bracket 3 and the heat sink 1. Since the two parallel sides of the lens bracket 3 are equipped with the adjustment lock 5, when the locking screw 6 is locked, one end of the adjustment lock 5 is fixed by the heat sink 1, and the adjustment locks 5 on both sides clamp the lens bracket 3 together to fix the lens bracket 3 and the adjustment lock 5. When the locking screw 6 is loosened, the adjustment lock 5 can move in the locking groove 301, so as to adjust the distance between the lens group 4 and the light source board 2 along the optical axis, compensate for the error in the processing or installation of the components, and achieve the best lighting effect. Usually, the error value is small, so the adjustment range of the adjustment lock 5 is preferably ±1mm.

[0025] In a specific embodiment of the present invention, four locking components are provided, and two parallel sides of the lens bracket 3 and the heat sink 1 are respectively connected with two locking components. The specific structure and specific connection structure of the locking components are as follows:

[0026] Adjust the connection between the lock buckle 5 and the radiator 1:

[0027] like Figure 3 As shown, the heat sink 1 generally includes a main board 101 and a plurality of fins 102 fixed to the main board 101 and arranged in an array. Bending hooks 103 are provided on both sides of the main board 101. One end of the adjusting lock buckle 5 is provided with a jacket 501 suitable for inserting the bending hooks 103, and the mating surface of the jacket 501 and the bending hook 103 is perpendicular to the central axis of the locking screw 6 and the adjustment direction of the adjusting lock buckle 5 in the locking groove 301. The outer edge of the heat sink 1 and the bending hook 103 limit the jacket 501. After the jacket 501 and the bending hook 103 are matched, the adjusting lock buckle 5 can only move along the direction of the central axis of the jacket 501. Therefore, when the movable tool drives the lens bracket 3 to move to different positions, the position of the adjusting lock buckle 5 in the locking groove 301 will also change. The locking screw 6 can completely lock the adjusting lock buckle 5. Under the restriction of the side of the heat sink 1, the locked adjusting lock buckle 5 will not rotate around the central axis of the jacket 501.

[0028] As a preferred example, Figure 3 As shown, the outer peripheral surface of the outer sleeve 501 is a prismatic surface. When the adjustment lock buckle 5 is matched with the bending hook 103, the outer sleeve 501 fits with the outer edge of the main board 101.

[0029] Adjust the connection between the lock buckle 5 and the lens bracket 3:

[0030] like Figure 4As shown, the two sides of the lens holder 3 are fixed with a lock mounting part 302, and the lock groove 301 is a U-shaped groove that passes through the outer surface of the lock mounting part 302, and the opening of the U-shaped groove faces the bottom surface of the lens holder 3. The adjustment lock 5 includes a connecting plate 502 connected to the outer sleeve 501 and a limiting column 503 extending from the end surface of the connecting plate 502 to the direction of the oppositely arranged adjustment lock 5, and the screw hole passes through the limiting column 503 and the connecting plate 502. The outer diameter of the limiting column 503 is slightly smaller than the notch size of the lock groove 301. When the limiting column 503 slides into the lock groove 301, the connecting plate 502 can fit on the surface of the lock mounting part 302 to prevent the limiting column 503 from shaking.

[0031] Preferably, the bending hooks 103 on two parallel sides of the heat sink 1 are bent in opposite directions. When the lens bracket 3 is installed, the locking components on both sides exert opposite forces on the heat sink 1, which can prevent the locking components from detaching from the heat sink 1 along the central axis of the outer sleeve 501.

[0032] Lens group 4:

[0033] To ensure the lighting effect, the lens group 4 is preferably composed of three or more lenses, and the lens closest to the light source board 2 is made of glass. Specifically, the lens group 4 includes an inner lens 401, a middle lens 402 and an outer lens 403 arranged in sequence from the light source board 2 to the outside. The inner lens 401 is made of glass, the middle lens 402 is made of glass or PMMI material, and the outer lens 403 is made of PC material. Figure 2 and Figure 5 As shown, the light-entering surface of the inner lens 401 is a plane and the light-emitting surface is a convex surface. The incident light can be evenly dispersed to the light-emitting surface of the inner lens 401 through the plane. The middle lens 402 is a hyperbolic lens. The light-entering surface and the light-emitting surface of the middle lens 402 are both convex surfaces. The angle of the light beam emitted from the inner lens 401 is relatively large. The middle lens 402 can adjust the angle of the light beam and shape the light beam. The outer lens 403 is a concave-convex lens. The light-entering surface of the outer lens 403 is a concave surface and the light-emitting surface is a convex surface. The light beam can be emitted approximately horizontally. The inner lens 401 is made of optical glass material, and the middle lens 402 and the outer lens 403 are made of optical glass or high-temperature plastic.

[0034] Preferably, a shading hood 7 is provided on the periphery of the inner lens 401, and the shading hood 7 can be located on the periphery of the light-emitting surface of the inner lens 401 to block the light beams scattered outward. The shading hood 7 is made of a black, high-temperature resistant material with rough leather grain, preferably PBT-GF30 or PC-HT material, to eliminate the influence of stray light at the edge of the inner lens 401 on the optical structure light shape.

[0035] Installation of lens bracket 3 and lens group 4: Figure 5As shown, the lens holder 3 has a boss surface for placing the inner lens 401, the light shield 7 is fixed in the lens holder 3, the middle lens 402 is provided with legs, mounted on the light shield 7, and the outer lens 403 is provided with a mounting surface on the periphery for fixing with the top of the lens holder 3. The inner lens 401 is fixed to the lens holder 3 by screws or welding, and the welding method uses ultrasonic welding or laser welding. The inner lens 401, the middle lens 402 and the outer lens 403 are positioned along the optical axis. The positioning method is to set two boss surfaces in the lens holder 3 to position the inner lens 401 and the middle lens 402 respectively, and the outer lens 403 is mounted on the middle lens 402. The optical axis positioning is achieved by the cooperation of the positioning hole and the positioning pin on the positioning contact surface. .

[0036] The heat sink 1 is used to dissipate heat from the light source board 2 to increase the service life of the light source board 2. In a specific embodiment of the present invention, the thickness of each fin 102 is 0.5-0.8 mm, and the distance between two adjacent fins 102 is 3 mm-5 mm.

[0037] In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments.

[0038] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A lock-fixed optical structure, Features: Comprising a heat sink (1), a light source board (2), a lens bracket (3) and a lens group (4), wherein the light source board (2) is fixed on the heat sink (1), the lens group (4) is fixed on the lens bracket (3), and the lens group (4) comprises a plurality of lenses arranged in sequence outward from the light source board (2); The lens bracket (3) is provided with locking grooves (301) on two parallel side surfaces, the lens bracket (3) and the heat sink (1) are connected to the lens bracket (3) via a locking assembly, the locking assembly comprising an adjusting locking buckle (5) and a locking screw (6), one end of the adjusting locking buckle (5) is connected to the heat sink (1), the other end of the adjusting locking buckle (5) is inserted into the locking groove (301) and can be adjusted reciprocatingly along the lens arrangement direction, and the other end of the adjusting locking buckle (5) has a screw hole perpendicular to the reciprocating adjustment direction of the adjusting locking buckle (5) and suitable for the locking screw (6) to pass through, and the locking screw (6) passes through the screw hole and abuts against the lens bracket (3) for fixation; Bending hooks (103) are provided on both sides of the radiator (1), one end of the adjusting lock buckle (5) is provided with an outer sleeve (501) suitable for inserting the bending hook (103), and the matching surface between the outer sleeve (501) and the bending hook (103) is perpendicular to the central axis of the locking screw (6) and the adjustment direction of the adjusting lock buckle (5) in the locking groove (301); Locking buckle mounting parts (302) are fixed on both sides of the lens bracket (3), the locking groove (301) is a U-shaped groove penetrating the outer surface of the locking buckle mounting part (302), and the opening of the U-shaped groove faces the bottom surface of the lens bracket (3); The adjusting lock buckle (5) comprises a connecting plate (502) connected to the outer sleeve (501) and a limiting column (503) extending from the end surface of the connecting plate (502) in the direction of the adjusting lock buckle (5) arranged opposite thereto, and the screw hole passes through the limiting column (503) and the connecting plate (502).

2. The locking and fixing optical structure according to claim 1, Features: The main board (101) of the heat sink (1) is a rectangular panel, the outer peripheral surface of the outer jacket (501) is a prism surface, and when the adjustment lock buckle (5) cooperates with the bending hook (103), the outer jacket (501) fits with the outer edge of the main board (101).

3. The locking and fixing optical structure according to claim 1, Features: The bending directions of the bending hooks (103) located on two parallel side surfaces of the heat sink (1) are opposite.

4. The locking and fixing optical structure according to claim 1, Features: The heat sink (1) comprises a main board (101) and a plurality of fins (102) fixed to the main board (101) and arranged in an array.

5. The locking and fixing optical structure according to claim 4, Features: The thickness of each fin (102) is 0.5-0.8 mm, and the distance between adjacent fins (102) is 3 mm-5 mm.

6. The locking and fixing optical structure according to claim 1, Features: The lens group (4) comprises an inner lens (401), a middle lens (402) and an outer lens (403) which are arranged in sequence outward from the light source plate (2); the light incident surface of the inner lens (401) is a plane surface and the light emitting surface is a convex surface; the middle lens (402) is a hyperbolic lens; and the outer lens (403) is a concave-convex lens.

7. The locking and fixing optical structure according to claim 6, Features: A light shield (7) is provided on the outer periphery of the inner lens (401).

Images