Lamp dimming mechanism and vehicle headlight assembly

Abstract

The present invention relates to a lamp dimming mechanism and a vehicle headlight assembly. The lamp dimming mechanism includes a dimming rod, a dimming member, a bracket, and a fastening member. The first dimming end of the dimming rod is used to be connected to the lamp body, and the bracket is used to be connected to the vehicle body. The dimming member, the bracket, and the fastening member are sequentially sleeved on the dimming rod along the direction away from the lamp body. An active gap is formed between the bracket and the dimming rod, and the bracket is ball-jointed with the dimming member. The fastening member cooperates with the second dimming end of the dimming rod to press the bracket against the dimming member, thereby restricting the relative movement between the bracket and the dimming member. The components of the present invention are small in size and compactly distributed, resulting in a small occupied space, being applicable to working conditions where the space is too small to accommodate a complete dimming structure, and expanding the application range of the lamp dimming mechanism. Since the adjustment of the relative position between the dimming member and the bracket in the lamp dimming mechanism is a continuous adjustment, continuous adjustment of the light pattern can be achieved, improving the accuracy of the light pattern.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive lamps, and particularly to a lamp dimming mechanism and a vehicle lamp assembly. Background Art

[0002] Automotive lamps are important functional components of vehicles. Due to the diverse requirements for functions, automotive lamps usually include parts such as a low-beam lamp unit structure, an auxiliary low-beam lamp unit structure, a high-beam lamp unit structure, and an auxiliary high-beam lamp unit structure. Based on traffic rules, in order to ensure safety during driving, it is usually necessary to design the irradiation light pattern of automotive lamps into a specific shape through a lamp dimming mechanism to ensure that the irradiation light illuminates the road ahead, thereby helping the driver quickly identify the road conditions on the side close to the driving side. At the same time, it is also necessary to ensure that the irradiation light does not cause glare to oncoming vehicles.

[0003] In current automotive lamps, as shown in FIGS. 1(a) and 1(b), the implementation form of the lamp dimming mechanism mainly adjusts the irradiation light by connecting a fulcrum nut 1 and a fulcrum screw 2 to a dimming bracket 3, resulting in a relatively large space occupied by the overall lamp dimming mechanism. However, due to the limited space of the body sheet metal structure and the gradually complex internal structure parts of the lamp, the space occupied by the headlamp body becomes larger, making it impossible to reserve enough space inside the lamp for the lamp dimming mechanism, that is, the conventional lamp dimming mechanism can no longer meet the installation requirements. Summary of the Invention

[0004] Based on this, in view of the problem that the above-mentioned lamp dimming mechanism occupies a relatively large space, it is necessary to provide a lamp dimming mechanism and a vehicle lamp assembly that can achieve irradiation light and occupy a smaller space.

[0005] A lamp dimming mechanism includes a dimming rod, a dimming member, a bracket, and a fastening member. The first dimming end of the dimming rod is used to be connected to the lamp body, and the bracket is used to be connected to the vehicle body;

[0006] The dimming member, the bracket, and the fastening member are sequentially sleeved on the dimming rod along the direction away from the lamp body;

[0007] An active gap is formed between the bracket and the dimming rod, and the bracket is ball-connected to the dimming member;

[0008] The fastening member cooperates with the second dimming end of the dimming rod to press the bracket against the dimming member, thereby restricting the relative movement between the bracket and the dimming member.

[0009] Preferably, in some embodiments of the present application, the active gap is an annular conical gap with the cone apex pointing to the lamp body.

[0010] Preferably, in some embodiments of the present application, the dimming member has a dimming convex surface facing the bracket, the bracket has a dimming concave surface adapted to the dimming convex surface, and the dimming convex surface abuts against the dimming concave surface.

[0011] Further, in some embodiments of the present application, the first fastening end of the fastening member is threadedly connected to the second dimming end of the dimming rod, and the second fastening end of the fastening member is ball-head connected to the bracket.

[0012] Further, in some embodiments of the present application, the lamp dimming mechanism further includes a mounting member disposed on the lamp body, and the mounting member is gear-connected or threadedly connected to the dimming rod.

[0013] Further, in some embodiments of the present application, a mounting boss is provided on the dimming rod; a mounting hole is formed on the side of the dimming member facing the lamp body; the mounting member abuts against the shoulder of the mounting boss to abut the end face of the mounting boss against the hole wall of the mounting hole.

[0014] Further, in some embodiments of the present application, a slot is formed on the side of the dimming member facing the lamp body, and a plug block adapted to the slot is provided on the mounting member; the plug block is inserted into the slot to limit the relative movement between the mounting member and the dimming member.

[0015] Further, in some embodiments of the present application, the lamp dimming mechanism further includes a locking member disposed between the bracket and the dimming member, and the locking member is used to limit the relative movement of the dimming member relative to the bracket.

[0016] Preferably, in some embodiments of the present application, the locking member includes:

[0017] A locking groove opened on the bracket, the opening of the locking groove faces the dimming member;

[0018] A locking block disposed on the dimming member, and the locking block is adapted to the locking groove.

[0019] A vehicle lamp assembly includes any one of the above lamp dimming mechanisms, a lamp body and a vehicle body. Among them, the lamp body is installed at the first dimming end of the dimming rod in the lamp dimming mechanism, and the vehicle body is installed on the bracket.

[0020] The above-mentioned lamp dimming mechanism, by adopting a multi-part splicing structure including a dimming rod, a dimming component, a bracket, and a fastening component, etc., to form a multi-angle internal dimming structure, ensures the dimming performance, assembly performance, and anti-vibration performance of the lamp body. At the same time, the component sizes are small and the distribution is compact, resulting in a small occupied space. Therefore, the above-mentioned multi-part multi-angle internal dimming structure is particularly suitable for working conditions where the space is too small to accommodate a complete dimming structure, expanding the application range of the lamp dimming mechanism and optimizing the overall structure. Finally, since the adjustment of the relative position between the dimming component and the bracket in the lamp dimming mechanism is a continuous adjustment, the continuous adjustment of the light pattern can be achieved, improving the accuracy of the light pattern.

[0021] The above-mentioned vehicle headlamp assembly ensures the dimming performance, assembly performance, and anti-vibration performance of the lamp body. At the same time, the components of the dimming mechanism in the above-mentioned vehicle headlamp assembly have small sizes and are compactly distributed, resulting in a small occupied space. Therefore, the above-mentioned multi-part multi-angle internal dimming structure is particularly suitable for working conditions where the space is too small to accommodate a complete dimming structure, expanding the application range of the lamp dimming mechanism and optimizing the structure of the vehicle headlamp assembly.

[0022] For the various specific structures, functions, and effects of the present application, further detailed descriptions will be made below in conjunction with the accompanying drawings. Description of the Drawings

[0023] Figure 1(a) is the front view of the lamp dimming mechanism 10 in the prior art;

[0024] Figure 1(b) is the rear view of the lamp dimming mechanism 10 in the prior art;

[0025] Figure 2 is the front view of the lamp dimming mechanism 10 of some embodiments of the present application;

[0026] Figure 3 is the exploded front view of the lamp dimming mechanism 10 of some embodiments of the present application;

[0027] Figure 4 is the right view of the lamp dimming mechanism 10 of some embodiments of the present application;

[0028] Figure 5 is the sectional view of the lamp dimming mechanism 10 of some embodiments of the present application along Figure 4 section A-A in;

[0029] Figure 6 is the exploded sectional view of the lamp dimming mechanism 10 of some embodiments of the present application;

[0030] Figure 7 is the exploded perspective view of the lamp dimming mechanism 10 of some embodiments of the present application.

[0031] In the reference numerals:

[0032] Prior art

[0033] 1 - Fulcrum nut; 2 - Fulcrum screw; 3 - Dimming bracket;

[0034] This application

[0035] 10 - Lamp dimming structure; 100 - Dimming rod; 110 - First dimming end; 120 - Second dimming end; 130 - Mounting boss; 131 - Shoulder; 132 - End face; 140 - Rotation center; 200 - Dimming member; 210 - Dimming convex surface; 220 - Mounting hole; 221 - Hole wall; 230 - Slot; 300 - Bracket; 310 - Dimming concave surface; 320 - Fastening convex surface; 400 - Fastening member; 410 - First fastening end; 420 - Second fastening end; 421 - Fastening concave surface; 500 - Mounting member; 510 - Insert block; 600 - Locking member; 610 - Locking groove; 620 - Locking block; 20 - Lamp body; 21 - Radiator; 22 - Reflector; 23 - Circuit board; 24 - Mounting screw. Detailed implementation manners

[0036] The technical solutions in the embodiments of this application will be further clearly and completely described below in conjunction with the accompanying drawings. It should be noted that the following embodiments are only some preferred embodiments of this application and do not cover all embodiments covered by the technical solutions of this application.

[0037] It should be noted that in the description of this application, when an element is referred to as "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of this invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0039] When the structural dimensions of the body parts outside the lamp body are too large, resulting in limited external space for the lamp body and insufficient space to arrange a complete dimming mechanism, in order to ensure the assembly performance and vibration performance of the lamp body 20 on the vehicle body, the dimming requirements of the lamp body are realized by adopting a method of splicing multiple parts into the lamp dimming mechanism 10. As Figure 2 And Figure 3As shown in the figure, a dimming rod 100 is used to connect the fastening member 400, the bracket 300, the dimming member 200 and the lamp body 20, so that the lamp body 20 including the radiator can rotate in the horizontal / vertical direction around the rotation center, realizing the dimming inside the lamp. Finally, by locking the fastening member 400 to the bracket 300 and the dimming member 200, the vibration requirements are met.

[0040] According to Figure 2 and Figure 3 It can be known that in some embodiments of the present application, a lamp dimming mechanism 10 includes a dimming rod 100, a dimming member 200, a bracket 300 and a fastening member 400. Among them, the first dimming end 110 of the dimming rod 100 is used to connect with the lamp body 20, and the bracket 300 is used to connect with the vehicle body (not shown). The dimming member 200, the bracket 300 and the fastening member 400 are sequentially sleeved on the dimming rod 100 along the direction away from the lamp body 20. An activity gap (not marked) is formed between the bracket 300 and the dimming rod 100, and the bracket 300 is connected with the dimming member 200 by a ball head. The bracket 300 is in spherical contact with the dimming member 200. When the bracket 300 and the dimming member 200 rotate relative to each other along the contact surface, the dimming rod 100 rotates and moves relative to the bracket 300 within the range of the activity gap along its own axis, thereby adjusting the relative positions of the lamp body 20 connected to the first dimming end 110 and the vehicle body connected to the bracket 300. Specifically, when the position of the vehicle body is fixed, the above lamp dimming mechanism 10 can adjust the tilt angle of the lamp body 20 or the position where the lamp body 20 is located, so that the light pattern of the lamp body 20 is a preset light pattern. The fastening member 400 cooperates with the second dimming end 120 of the dimming rod 100 to, after the adjustment of the lamp body 20 is completed, press the bracket 300 against the dimming member 200, thereby restricting the relative movement between the bracket 300 and the dimming member 200. That is, by locking the lamp dimming mechanism 10 with the fastening member 400, the complex working conditions with external loads such as vibration are met, the stability of the lamp dimming mechanism 10 during use is improved, and the application range of the lamp dimming mechanism 10 is expanded. Among them, the dimming rod 100 can be an installation screw.

[0041] It can be understood that the light pattern refers to the angle and shape of the light emitted by automotive lamps, which can be characterized by the illumination position of the light of the automotive lamps projected onto a certain vertical plane. Specifically, the light pattern can be the illumination position projected onto a certain vertical plane after the first lamp unit structure and the second lamp unit structure are matched. When the vehicle drives on the right side, in order to avoid the influence of the illumination of automotive lamps on the sight and safety of oncoming vehicles, the light pattern is characterized by a lower left bright-dark cut-off line and a higher right bright-dark cut-off line, so that it will neither affect oncoming vehicles nor prevent clearly seeing pedestrians and vehicles on the right road. On the contrary, when the vehicle drives on the left side, the light pattern is characterized by a lower right bright-dark cut-off line and a higher left bright-dark cut-off line. The light pattern is generally adjusted by adjusting the tilt angle of the lamp unit structure.

[0042] Preferably, in some embodiments of the present application, as Figure 3 shown, the lamp body 20 includes a radiator 21, a reflector 22, a circuit board 23 and mounting screws 24 that are connected to each other. Among them, the dimming rod 100 is installed on the radiator 21.

[0043] The above-mentioned lamp dimming mechanism 10, by adopting a multi-part splicing composition multi-angle internal dimming structure such as a dimming rod 100, a dimming member 200, a bracket 300 and a fastening member 400, ensures the dimming performance, assemblability and vibration resistance of the lamp body 20. At the same time, the component sizes are small and the distribution is compact, resulting in a small occupied space. Therefore, the above multi-part composition multi-angle internal dimming structure is particularly suitable for working conditions where the space is too small to accommodate a complete dimming structure, expanding the application range of the lamp dimming mechanism 10 and optimizing the overall structure. Finally, since the adjustment of the relative position between the dimming member 200 and the bracket 300 in the lamp dimming mechanism 10 is a continuous adjustment, the continuous adjustment of the light pattern can be realized, improving the accuracy of the light pattern.

[0044] In some embodiments of the present application, according to Figure 4 and Figure 5 it can be known that the moving gap is a conical annular gap with the cone apex pointing to the lamp body 20. The dimming rod 100 can rotate arbitrarily in three-dimensional space around the cone apex of the conical annular gap. That is, the rotation center 140 of the dimming rod 100 is the cone apex of the conical annular gap.

[0045] Preferably, in some embodiments of the present application, the cone apex of the conical annular gap is located on the axis of the dimming rod 100. That is, the rotation center 140 of the dimming rod 100 is located on the axis of the dimming rod 100.

[0046] In the above-mentioned lamp dimming mechanism 10, the moving gap is an annular gap between cones, which is convenient for restricting the extreme rotation position of the dimming rod 100, preventing the lamp body 20 from slipping off the bracket 300 during the dimming process, and improving the overall stability of the lamp dimming mechanism 10. Further, when the apex of the annular gap between cones is located on the axis of the dimming rod 100, it is convenient to control the rotation of the dimming rod 100 in all directions, reducing the dimming difficulty of the lamp body 20.

[0047] Specifically, in some embodiments of the present application, according to Figure 6 and Figure 7 it can be known that the dimming member 200 has a dimming convex surface 210 facing the bracket, the bracket 300 has a dimming concave surface 310 adapted to the dimming convex surface 210, and the dimming convex surface 210 is in contact with the dimming concave surface 310.

[0048] In order to expand the dimming range of the lamp body 20 and improve the dimming accuracy of the lamp body 20, in some embodiments of the present application, according to Figure 5 , Figure 6 and Figure 7 it can be known that the above-mentioned dimming convex surface 210 and dimming concave surface 310 are arranged around the dimming rod 100, so that the adjustment of the lamp body 20 in all directions can be in spherical contact.

[0049] It can be understood that in some other embodiments of the present application, the dimming member 200 has a dimming concave surface (not shown) with an opening facing the bracket, the bracket 300 has a dimming convex surface (not shown) adapted to the dimming concave surface, and the dimming concave surface is in contact with the dimming convex surface to realize the ball joint connection between the dimming member 200 and the bracket 300.

[0050] Specifically, in some embodiments of the present application, as Figure 5 shown, the first fastening end 410 of the fastening member 400 is threadedly connected to the second dimming end 120 of the dimming rod 100, and the second fastening end 420 of the fastening member 400 is ball-jointed to the bracket 300.

[0051] In the above-mentioned lamp dimming mechanism 10, the fastening member 400 is ball-jointed to the bracket 300, which is convenient for the fastening member 400 to adapt to the dimming rod 100 at various rotation angles, and at the same time ensures that the fastening member 400 is in surface contact with the bracket 300, improving the stability of the overall structure.

[0052] Specifically, in some embodiments of the present application, as Figure 6As shown, the fastening first end 410 includes fastening internal threads, and the dimming second end 120 includes dimming external threads adapted to the fastening internal threads. By adjusting the threaded connection position between the fastening internal threads and the dimming external threads, the fastening member 400 adjusts the relative position between the fastening second end 420 and the bracket 300. After the dimming member 200 drives the lamp body 20 to complete dimming, the bracket 300 is pressed against the dimming member 200, thereby restricting the relative movement between the dimming member 200 and the bracket 300 after dimming is completed.

[0053] To reduce the installation difficulty of the lamp dimming mechanism 10 on the lamp body 20, in some embodiments of the present application, such as Figure 6 and Figure 7 shown, the lamp dimming mechanism 10 further includes a mounting member 500 provided on the lamp body 20, and the mounting member 500 is in gear connection or threaded connection with the dimming rod 100. Specifically, the dimming first end 110 of the dimming rod 100 includes a first gear, and the mounting member 500 includes a second gear adapted to the connecting external threads. The mounting member 500 and the dimming rod 100 are snap-connected by gears. Alternatively, the dimming first end 110 of the dimming rod 100 includes connecting external threads, and the mounting member 500 includes connecting internal threads adapted to the connecting external threads. The mounting member 500 and the dimming rod 100 are threadedly connected.

[0054] To reduce the number of components and lower the installation difficulty of the lamp dimming mechanism 10 on the lamp body 20, in some embodiments of the present application, the mounting member 500 is integrally formed with the lamp body 20.

[0055] To further restrict the relative movement between the dimming rod 100 and the lamp body 20 and improve the overall structural stability of the lamp dimming mechanism 10 after dimming is completed, according to Figure 6 and Figure 7 it can be seen that in some embodiments of the present application, the dimming rod 100 is provided with a mounting boss 130, the side of the dimming member 200 facing the lamp body is provided with a mounting hole 220, and the mounting member 500 abuts against the shoulder 131 of the mounting boss 130 to abut the end face 132 of the mounting boss 130 against the hole wall 221 of the mounting hole 220, thereby restricting the relative movement between the dimming rod 100 and the lamp body 20 along the axis of the dimming rod 100.

[0056] To reduce the friction between components and improve the effective utilization rate of energy, as Figure 7 shown, in some preferred embodiments, the mounting boss 130 is a spherical boss, and the mounting hole 220 is a spherical hole, realizing the ball contact between the mounting boss 130 and the dimming member 200, thereby realizing the rotational connection between the mounting boss 130 and the dimming member 200, improving the degree of freedom of rotation of the lamp body 20, and reducing the dimming difficulty of the lamp body 20.

[0057] In order to further restrict the relative movement between the dimming rod 100 and the lamp body 20, so as to improve the stability of the overall structure of the lamp dimming mechanism 10 after dimming is completed, in some embodiments of the present application, such as Figure 7 As shown, on the side of the dimming member 200 facing the lamp body 20, a slot 230 is provided. Among them, the opening of the slot 230 faces the lamp body 20, and an insertion block 51 adapted to the slot 230 is provided on the mounting member 500. The insertion block 510 is inserted into the slot 230 to restrict the relative movement between the mounting member 500 and the dimming member 200. The above-mentioned lamp dimming mechanism 10 can restrict the relative movement between the dimming rod 100 and the lamp body 20 along the axial direction of the dimming rod 100 through the cooperation of the slot 230 and the insertion block 51, and restrict the rotation of the dimming rod 100 relative to the lamp body 20 along the axial direction of the dimming rod 100.

[0058] In order to reduce the installation difficulty, in some embodiments of the present application, the opening direction of the slot 230 is parallel to the axial direction of the dimming rod 100.

[0059] In some embodiments of the present application, such as Figure 7 As shown, there are a total of 4 groups of slots 230, which are distributed around the mounting hole 220; at the same time, there are a total of 4 groups of insertion blocks 510, which are distributed around the mounting member 500, and the positions of the slots 230 and the insertion blocks 510 are opposite to each other respectively, realizing the stable connection between the mounting member 500 and the dimming member 200.

[0060] In order to further restrict the relative movement between the dimming rod 100 and the lamp body 20, so as to improve the stability of the overall structure of the lamp dimming mechanism 10 after dimming is completed, in some embodiments of the present application, such as Figure 7 As shown, the lamp dimming mechanism 10 further includes a locking member 600 provided between the bracket 300 and the dimming member 200. Among them, the locking member 600 is used to restrict the relative movement of the dimming member 200 relative to the bracket 300.

[0061] In some embodiments of the present application, such as Figure 7 As shown, the locking member 600 includes a matching locking groove 610 and a locking block 620. Among them, the locking groove 610 is opened on the bracket 300, the opening of the locking groove 610 faces the dimming member 200, and the locking block 620 is provided on the dimming member 200. The locking member 600 is used to restrict the relative movement of the dimming member 200 relative to the bracket 300.

[0062] In some embodiments of the present application, such as Figure 7As shown, the locking groove 610 is an arc groove with an opening facing the lamp body, and the locking block 620 is an arc block adapted to the arc groove. The arc groove and the arc block cooperate to limit the rotation of the light-dimming member 200 relative to the bracket 300 around the axis of the light-dimming rod 100, and to limit the movement of the light-dimming member 200 along the axial and radial directions of the light-dimming rod 100. The above-mentioned lamp dimming mechanism 10 of the lamp realizes the locking of the bracket 300 and the light-dimming member 200 through the cooperation of the arc groove and the arc block. At the same time, when the fastening member 400 is loosened, the light-dimming rod 100 can drive the light-dimming member 200 and the lamp body 20 to rotate in the radial direction, reducing the dimming difficulty of the lamp dimming mechanism 10.

[0063] A vehicle headlight assembly, as Figure 7 shown, includes any one of the above-mentioned lamp dimming mechanisms 10, a lamp body 20 and a vehicle body. Among them, the lamp body 20 is installed at the first dimming end 110 of the light-dimming rod 100 in the lamp dimming mechanism 10, and the vehicle body is installed on the bracket 300.

[0064] The above-mentioned vehicle headlight assembly ensures the dimming performance, assembly performance and anti-vibration performance of the lamp body. At the same time, the component sizes of the dimming mechanism in the above-mentioned vehicle headlight assembly are small and the distribution is compact, resulting in a small occupied space. Therefore, the multi-part multi-angle internal dimming structure is especially suitable for working conditions where the space is too small to accommodate a complete dimming structure, expanding the application range of the lamp dimming mechanism and optimizing the structure of the vehicle headlight assembly.

[0065] In some embodiments of the present application, the assembly method of the above-mentioned vehicle headlight assembly includes:

[0066] Step 1: Install the installation member 500 on the lamp body 20 and install the bracket 300 on the vehicle body. It can be understood that when the installation member 500 and the lamp body 20 are integrally formed, and the bracket 300 and the vehicle body are integrally formed, step 1 does not need to be performed.

[0067] Step 2: Install the first dimming end 110 of the light-dimming rod 100 on the installation member 500.

[0068] Step 3: Sleeve the light-dimming member 200 on the light-dimming rod 100 and complete the installation of the limiting components between the light-dimming member 200 and the installation member 500. For example, the installation member 500 abuts against the shoulder 131 of the installation boss 130 in the light-dimming rod 100 until the end face 132 of the installation boss 130 abuts against the hole wall 221 of the installation hole 220 on the light-dimming member 200. For another example, insert the insertion block 510 on the installation member 500 into the slot 230 on the light-dimming member 200.

[0069] Step 4: Pass the second dimming end 120 of the light-dimming rod 100 through the through hole of the bracket 300 to pass the light-dimming rod 100 through the bracket 300.

[0070] Step 5: Drive the lamp body 20 by adjusting the light adjusting column 100 to complete the light adjustment of the lamp body 20.

[0071] Step 6: Screw the fastening member 400 to the second light adjusting end 120 of the light adjusting column 100 until the bracket 300 is tightly pressed against the light adjusting member to complete the assembly of the vehicle lamp assembly.

[0072] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0073] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A lighting dimmer mechanism, characterized in that It includes a dimming rod, a dimming member, a bracket and a fastening member. The first dimming end of the dimming rod is used to be connected to the lamp body, and the bracket is used to be connected to the vehicle body; The dimming member, the bracket and the fastening member are sequentially sleeved on the dimming rod along the direction away from the lamp body; There is an active gap formed between the bracket and the dimming rod. The active gap is an annular conical gap with the cone tip pointing to the lamp body. The bracket is ball-jointed with the dimming member, and the dimming member and the bracket respectively have a dimming convex surface and a dimming concave surface; The fastening member cooperates with the second dimming end of the dimming rod to abut the bracket against the dimming member by abutting the dimming convex surface against the dimming concave surface, thereby restricting the relative movement between the bracket and the dimming member.

2. The lighting dimmer mechanism according to claim 1, wherein The first fastening end of the fastening member is threadedly connected to the second dimming end of the dimming rod, and the second fastening end of the fastening member is ball-jointed with the bracket.

3. The lamp dimming mechanism according to claim 1, characterized in that, The lamp dimming mechanism further includes a mounting member provided on the lamp body, and the mounting member is gear-connected or threadedly connected to the dimming rod.

4. The lighting dimmer mechanism according to claim 3, wherein, There is a mounting boss provided on the dimming rod; there is a mounting hole opened on the side of the dimming member facing the lamp body; the mounting member abuts against the shoulder of the mounting boss to abut the end face of the mounting boss against the hole wall of the mounting hole.

5. The lighting dimmer mechanism according to claim 4, characterized in that, There is a slot opened on the side of the dimming member facing the lamp body, and the mounting member is provided with a plug block adapted to the slot; the plug block is inserted into the slot to restrict the relative movement between the mounting member and the dimming member.

6. The lighting dimmer mechanism according to claim 1, wherein The lamp dimming mechanism further includes a locking member provided between the bracket and the dimming member, and the locking member is used to restrict the relative movement of the dimming member relative to the bracket.

7. The lighting dimmer mechanism according to claim 6, characterized in that The locking member includes: A locking groove opened on the bracket, and the opening of the locking groove faces the dimming member; A locking block provided on the dimming member, and the locking block is adapted to the locking groove.

8. A vehicle lamp assembly, characterized in that, It includes the lamp dimming mechanism, the lamp body and the vehicle body according to any one of claims 1 to 7, wherein the lamp body is installed at the first dimming end of the dimming rod in the lamp dimming mechanism, and the vehicle body is installed on the bracket.

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