Anti-off-modulation dimming structure

Abstract

The utility model discloses an anti-off-adjustment dimming structure, which comprises an adjusting part and a follow-up part, the adjusting part is used for inserting an adjusting tool and comprises a bevel gear, the bevel gear rotates clockwise and anticlockwise along with the rotation of the adjusting tool, and the follow-up part is meshed with the bevel gear; the adjusting screw rod penetrates through the follow-up part and rotates synchronously with the follow-up part; the action end and the follow-up part are arranged at an interval, the action end is in threaded connection with the adjusting screw rod, and the action end moves in the axial direction of the adjusting screw rod in the rotating process of the adjusting screw rod; at least two meshing positions exist between the follow-up part and the bevel gear, and the area, meshed with the bevel gear, of the follow-up part can generate elastic deformation to be disengaged from the bevel gear under the action of preset pressure. According to the utility model, through at least two meshing positions of the follow-up part and the bevel gear and in combination with the meshing area capable of elastically deforming on the follow-up part, the follow-up part and the bevel gear are prevented from being adjusted, separated and damaged by switching the meshing area when the adjusting screw rod is adjusted to a limit position.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle lamps and lanterns equipment technical field, especially a kind of anti-adjustment light adjusting structure. BACKGROUND

[0002] Vehicle lamps and lanterns need to be adjusted by light adjusting structure in application process, but the current light adjusting device structure is more complex, and the integration is poor, it is difficult to balance structural strength and production cost;And there is no obvious distance indication for the light adjusting distance of light adjusting support in single direction, when light adjusting, it is easy to screw and adjust to the limit position of single direction, and the operability is poor, and it is easy to produce the problems of rotation adjustment failure of light adjusting device or damage light adjusting device.

[0003] Therefore, how to improve the stability of the adjustment safety of light adjusting structure is a technical problem to be solved by the person skilled in the art. UTILITY MODEL CONTENT

[0004] Therefore, the purpose of the utility model is to provide an anti-adjustment light adjusting structure to improve the stability of the adjustment safety of light adjusting structure.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] An anti-adjustment light adjusting structure comprises:

[0007] An adjusting part and a follow-up part, the adjusting part is used for inserting adjusting tool and comprises bevel gear, the bevel gear rotates along its axial clockwise and counterclockwise rotation with the rotation of the adjusting tool, the follow-up part is engaged with the bevel gear and rotates with the bevel gear;

[0008] Adjusting screw, set through the follow-up part and rotate synchronously with the follow-up part;

[0009] Action end, set apart with the follow-up part and be connected with the adjusting screw, the action end moves along the axial direction of the adjusting screw in the process of adjusting screw rotation;

[0010] The follow-up part and the bevel gear have at least two meshing positions, and the meshing area of the follow-up part and the bevel gear can be elastically deformed to disengage the bevel gear when subjected to a predetermined pressure.

[0011] Preferably, in the above anti-adjustment light adjusting structure, the follow-up part comprises a fixed seat and an adjusting spring piece, the adjusting spring piece is annular knot and fixedly arranged on one side of the fixed seat, and the fixed seat is fixedly connected with the adjusting screw.

[0012] The protrusion on the adjusting spring is provided with a spring tooth, the bevel gear is provided with a plurality of sets of meshing grooves in the circumferential direction, the root of the spring tooth is matched with the meshing groove to realize the synchronous rotation of the fixed seat and the bevel gear, and when the fixed seat drives the adjusting screw to rotate to the limit position, the spring tooth is locked with the bevel gear, and when the rotating force of the bevel gear is greater than the preset pressure, the spring tooth is compressed to realize the switching of the meshing groove.

[0013] Preferably, in the above anti-adjustment light adjusting structure, two spring teeth are arranged on the adjusting spring, and the two spring teeth are located on the same diameter of the adjusting spring; a plurality of sets of meshing grooves are uniformly arranged in the circumferential direction of the bevel gear.

[0014] Preferably, in the above anti-adjustment light adjusting structure, a mounting groove is arranged on the fixed seat, and a connecting part provided with a barb structure is arranged on one side of the adjusting spring and is clamped and locked with the mounting groove.

[0015] Preferably, in the above anti-adjustment light adjusting structure, the adjusting part comprises a bevel gear and a mounting seat, the bevel gear is perpendicular to the axis of the bevel gear and is matched with the bevel gear, a adjusting groove is arranged on the side of the bevel gear away from the bevel gear to insert the adjusting tool for locking, and the bevel gear is rotatably arranged on the mounting seat.

[0016] Preferably, in the above anti-adjustment light adjusting structure, a limiting rib is arranged on the outer wall of the bevel gear, a limiting groove is arranged on the mounting seat to insert the limiting rib, and the limiting rib is clamped and limited from both sides in the axial direction of the bevel gear.

[0017] Preferably, in the above anti-adjustment light adjusting structure, the adjusting screw is arranged through the mounting seat, and a ring-shaped sealing ring is arranged on the adjusting screw in the region passing through the mounting seat, and the sealing ring is compressed by the adjusting screw and the mounting seat.

[0018] Preferably, in the above anti-adjustment light adjusting structure, the action end comprises a rotating ball, a fixed support and a connecting seat, the rotating ball is sleeved on the outer wall of the adjusting screw and is threadedly matched with the adjusting screw, the fixed support is used for clamping the rotating ball to limit the rotation of the rotating ball, the fixed support is locked and matched with the connecting seat, and the connecting seat is used for connecting a light adjusting support.

[0019] Preferably, in the above anti-adjustment light adjusting structure, a slide is arranged on the fixed support, the length direction of the slide is parallel to the axis of the adjusting screw, a limiting block is arranged on the rotating ball to slide into the slide and realize rotation limiting through the opposite two side walls of the slide.

[0020] Preferably, in the above-mentioned anti-adjustment dimming structure, the adjusting screw includes a threaded section and a connecting section. The threaded section is connected to the actuating end, and the connecting section is fixed to the follower part. The threaded section and the connecting section are isolated by a separator.

[0021] As can be seen from the above technical solution, the anti-disengagement dimming structure provided by this utility model receives the drive of the adjustment tool through the adjustment part and realizes the transmission direction through the bevel gear, so as to drive the rotation of the follower part; the follower part acts on the adjustment screw to rotate, and further drives the moving end on the adjustment screw to realize the position along the axial direction of the adjustment screw, and drives the dimming bracket to realize unidirectional position adjustment. It should also be noted that while the follower and bevel gear achieve meshing transmission, the follower and bevel gear have at least two meshing positions. When the dimming structure is in normal use, the follower only engages with a single meshing position on the bevel gear. When the dimming structure is adjusted to the one-way limit position, the follower and bevel gear can no longer rotate synchronously. At this time, if the operator continues to operate the adjustment part with the adjustment tool until the meshing area of ​​the follower and bevel gear is subjected to a preset pressure, the meshing area of ​​the follower with elastic deformation effect can produce elastic deformation to contact and mesh with the bevel gear. The bevel gear can then rotate and switch the meshing area with the follower, achieving the effect of skipped meshing. This avoids the problem of disengagement between the follower and bevel gear, as well as the problem of damage to the bevel gear when over-adjusted at the limit position. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the anti-modulation and anti-disconnection light-adjusting structure provided in the embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the adjustment section;

[0025] Figure 3 This is a schematic diagram of the assembly of the adjustment section;

[0026] Figure 4 This is a schematic diagram of the bevel gear and the follower.

[0027] Figure 5 for Figure 4 Assembly diagram;

[0028] Figure 6 A schematic diagram showing the assembly of the adjusting spring and the bevel gear;

[0029] Figure 7 Assembly diagram of adjusting screw and action end;

[0030] Figure 8 Assembly diagram of rotating ball and fixed support;

[0031] Figure 9 Structure diagram of adjusting screw.

[0032] Wherein, 10 - adjusting part;110 - bevel gear;1110 - meshing groove;120 - bevel gear;1210 - adjusting groove;1220 - limiting rib;130 - mounting seat;1310 - limiting groove;20 - follow-up part;210 - fixed seat;2110 - mounting groove;220 - adjusting spring piece;2210 - spring piece tooth;2220 - connecting part;30 - adjusting screw;310 - threaded section;320 - connecting section;330 - partition piece;40 - action end;410 - rotating ball;4110 - limiting block;420 - fixed support;4210 - slide;430 - connecting seat;50 - sealing ring. DETAILED DESCRIPTION

[0033] The core of the utility model lies in disclose a kind of anti-adjustment light adjusting structure, to improve the stability of the light adjusting structure adjustment security.

[0034] In order to make the personnel in the technical field better understand the utility model scheme, the utility model embodiment is described below with reference to the drawings, and besides, the embodiment shown below does not have any limiting effect on the utility model content recited in claim. In addition, the entire content of the constitution represented in the following embodiment is not limited to the solution of the utility model recited in claim.

[0035] As Figures 1-9 As shown in the utility model embodiment provides a kind of anti-adjustment light adjusting structure, to realize accurate light adjusting operation by closely fitting mechanical transmission structure, specifically, the anti-adjustment light adjusting structure mainly includes adjusting part 10, follow-up part 20, adjusting screw 30 and action end 40. Wherein, adjusting part 10 is the input end of anti-adjustment light adjusting structure, it is used for adjusting tool, such as cross screwdriver or inner hex, insertion adjustment, adjusting tool is inserted into adjusting part 10 after with adjusting part 10 lock to when operating personnel exert rotating operation, driving adjusting part 10 rotates. And need to be explained, adjusting part 10 includes bevel gear 110, bevel gear 110 is realized rotating direction adjustment by the tooth structure of its side, and can be rotated along its own central axis direction clockwise and counterclockwise with the rotation of adjusting tool, the setting of bevel gear 110 makes that operating personnel can be operated on light adjusting structure by tool outside, and provides power base.

[0036] On this basis, the follower 20 is engaged with the bevel gear 110 to realize synchronous rotation under the driving of the bevel gear 110, and power input is realized through the bevel gear 110; on the basis of this structure, the adjusting screw 30 is arranged through the follower 20 and is fixedly connected with the follower 20 to keep synchronous rotation. The above structure can meet that the follower 20 rotates when the bevel gear 110 rotates, thereby driving the adjusting screw 30 to rotate to complete power input of the adjusting screw 30. It needs to be explained that rotation of the adjusting screw 30 is a core power transmission path for realizing the dimming function, and the adjusting screw 30 converts its rotation into axial movement of the action end 40 along the adjusting screw 30 through the threaded connection with the action end 40. Specifically, the action end 40 is arranged in space with the follower 20 and is threadedly connected with the adjusting screw 30, and the action end 40 is provided with a limiting structure on the periphery to form a screw structure with the adjusting screw 30, that is, the action end 40 moves along the axial direction of the adjusting screw 30 in the rotation process of the adjusting screw 30; and the action end 40 is one end connected with the dimming support, and the parameter of the dimming device is changed through the linear movement of the action end 40.

[0037] On the basis of the above structure, the anti-adjusting-and-dimming structure provided in the embodiments of the utility model has at least two meshing positions between the follower 20 and the bevel gear 110, that is, the follower 20 and the bevel gear 110 have at least two meshing states; at the same time, the region of the follower 20 meshing with the bevel gear 110 has an elastic deformation function, which can be an elastic piece made of metal or plastic material and has an elastic deformation function. On this basis, in the process of normal use, the follower 20 and the bevel gear 110 keep the meshing state and rotate synchronously, and when the adjusting screw 30 is adjusted in one direction to the limit position, the follower 20 fixedly connected with the adjusting screw 30 cannot continue to rotate, at this time, the region of the follower 20 meshing with the bevel gear 110 is subjected to pressure action when the bevel gear 110 is continuously driven by the adjusting tool, the meshing region of the follower 20 and the bevel gear 110 can produce elastic deformation to disengage from the bevel gear 110 when subjected to the preset pressure, at this time, the bevel gear 110 can rotate relative to the follower 20 under the driving of the adjusting tool, and after rotating by a certain angle, the bevel gear 110 is engaged with the follower 20 through another meshing position to keep the effective structure form of the anti-adjusting-and-dimming structure.

[0038] It should be noted that the preset pressure of the engagement area of the follow-up part 20 with the bevel gear 110 in the above embodiment is set by selecting different follow-up parts 20 by the operator, and the preset pressure is required to be not too small to avoid the disengagement of the follow-up part 20 and the bevel gear 110 under normal operation, and the preset pressure is required to be not too large to avoid the wear of the follow-up part 20 and the bevel gear 110 when the adjusting screw 30 is rotated to the limit position. The setting of the preset pressure makes the use of the anti-disengagement and dimming structure more secure, that is, when the adjusting tool is still operated after the adjusting screw 30 is adjusted to the limit position, the bevel gear 110 can be disengaged and adjusted again to engage the follow-up part 20, thereby avoiding the relative wear and disengagement failure of the two, and the sound or force of re-engagement can prompt the operator to adjust to the position, thereby avoiding the continuous adjustment to damage the anti-disengagement and dimming structure, and improving the reliability and durability of the dimming structure.

[0039] Further, in some embodiments of the present application, the follow-up part 20 comprises a fixed seat 210 and an adjusting spring 220, wherein the adjusting spring 220 is an annular structure and is fixedly arranged on one side of the fixed seat 210, so that the adjusting spring 220 and the fixed seat 210 form a whole, thereby enhancing the stability of the structure. The fixed seat 210 is fixedly connected with the adjusting screw 30, thereby ensuring the synchronous rotation relationship between the adjusting screw 30 and the follow-up part 20. As for the engagement structure of the follow-up part 20 and the bevel gear 110, the adjusting spring 220 is provided with spring teeth 2210 in the embodiment, and the bevel gear 110 is provided with a plurality of engagement grooves 1110 in the circumferential direction, and the root of the spring teeth 2210 can cooperate with any one of the engagement grooves 1110 to realize the synchronous rotation of the fixed seat 210 and the bevel gear 110. The engagement and cooperation mode not only ensures the accuracy of transmission, but also makes the engagement teeth have a plurality of engagement positions on the bevel gear 110 by the plurality of engagement grooves 1110. On this basis, when the fixed seat 210 drives the adjusting screw 30 to rotate to the limit position, the spring teeth 2210 will be locked with the bevel gear 110 to avoid the over-adjustment of the adjusting screw 30, and when the rotating force of the bevel gear 110 is greater than the preset pressure due to other factors such as operator error, the spring teeth 2210 will be compressed to be unlocked with the bevel gear 110 to rotate relatively, and when the bevel gear 110 rotates to the next engagement groove 1110 aligned with the engagement teeth, the engagement and cooperation is realized again. The above elastic switching mechanism not only improves the flexibility of the dimming structure, but also effectively prevents the damage of the components caused by over-adjustment.

[0040] In order to further optimize the layout of the spring teeth 2210 on the adjusting spring 220 and the distribution of the meshing grooves 1110 on the bevel gear 110, in some embodiments of the present application, two spring teeth 2210 are arranged on the adjusting spring 220, and the two spring teeth 2210 are located on the same diameter of the adjusting spring 220. This symmetrical layout not only improves the balance of the structure, but also enhances the stability when the spring teeth 2210 mesh with the bevel gear 110. At the same time, the bevel gear 110 is uniformly provided with a plurality of meshing grooves 1110 in the circumferential direction, and this uniform distribution design makes the adjusting spring 220 and the bevel gear 110 need to rotate the same distance in the process of single meshing switching, and has a more smooth meshing switching effect, further enhances the durability of the structure, and prolongs the service life of the light adjusting structure.

[0041] Further, for the fixation of the fixed seat 210 and the adjusting spring 220, in some embodiments of the present application, the fixed seat 210 is provided with a mounting groove 2110, and the adjusting spring 220 is provided with a connecting part 2220 with a barb structure on one side, and is locked by the connecting part 2220 and the mounting groove 2110. The clamping and locking mode not only realizes the firm connection between the adjusting spring 220 and the fixed seat 210, but also facilitates assembly and disassembly, improves production efficiency and maintenance convenience, and at the same time, the above structure can also improve the integration of the adjusting spring 220 and the fixed seat 210, reduce the space occupation of the follower 20, and improve the fine design of the anti-adjusting and light adjusting structure.

[0042] For the adjusting part 10 connected with the adjusting tool, in order to meet the convenient use of the adjusting tool and reduce the structural damage to the bevel gear 110 for transmission, in some embodiments of the present application, the adjusting part 10 comprises a bevel gear 110, and further comprises a bevel gear 120 and a mounting seat 130, wherein the bevel gear 120 is perpendicular to the axis of the bevel gear 110 and is engaged with the bevel gear 110, and the vertical engagement design makes the insertion direction of the adjusting tool perpendicular to the rotation axis of the bevel gear 110, which provides a more convenient operation mode for the operator. At the same time, the bevel gear 120 is provided with an adjusting groove 1210 on the side away from the bevel gear 110, which is used for inserting and locking the adjusting tool, so that the operator has enough external operation space to realize the adjusting operation of the light adjusting structure, and improves the convenience and accuracy of the light adjusting.

[0043] On this basis, the bevel gear 120 is rotatably assembled on the mounting seat 130 to meet the rotation transmission requirement of the bevel gear 120, and the mounting seat 130 provides stable support for the bevel gear 120. It should be noted that, in some embodiments of the present application, in order to ensure the assembly stability of the bevel gear 120 and the mounting seat 130, a limiting rib 1220 is protruded on the outer wall of the bevel gear 120, the limiting rib 1220 is annular structure and is arranged around the outer wall of the bevel gear 120, and a limiting groove 1310 is formed on the mounting seat 130 for inserting the limiting rib 1220. When the bevel gear 120 is installed, the limiting rib 1220 of the bevel gear 120 is clamped into the two limiting grooves 1310, so that the bevel gear 120 can be clamped and limited from both sides in the axial direction, and the assembly on the mounting seat 130 is realized, and the bevel gear 120 retains the freedom of rotation along the axis, and the transmission effect on the bevel gear 110 can be realized.

[0044] It should be noted that the above structure not only ensures the stable rotation of the bevel gear 120, but also effectively prevents the displacement of the bevel gear 120 in the axial direction, thereby improving the stability and reliability of the dimming structure. The cooperation of the limiting rib 1220 and the limiting groove 1310 makes the connection between the bevel gear 120 and the mounting seat 130 more firm, reduces the risk of loosening or damage of the components caused by external force, and further prolongs the service life of the dimming structure.

[0045] Further, in some embodiments of the present application, the adjusting screw 30 is arranged through the mounting seat 130, and an annular sealing ring 50 is arranged in the area where the adjusting screw 30 passes through the mounting seat 130. The sealing ring 50 is made of elastic material and is compressed by the outer wall of the adjusting screw 30 and the inner wall of the mounting seat 130, thereby achieving good sealing effect. The design of the sealing structure not only prevents dust, impurities and the like from entering the inside of the dimming structure, but also effectively prevents the leakage of lubricating oil and the like, thereby improving the reliability and service life of the dimming structure.

[0046] Further, in the anti-adjusting and dimming structure provided by the embodiment of the utility model, the action end 40 is used for connecting the dimming support, and specifically comprises a rotating ball 410, a fixed support 420 and a connecting seat 430, wherein the rotating ball 410 is sleeved on the outer wall of the adjusting screw 30 and is threadedly matched with the adjusting screw 30, and simultaneously, the fixed support 420 is used for clamping the rotating ball 410 to limit the rotation of the rotating ball 410, so that the rotating ball 410 can move along the adjusting screw 30 in the axial direction under the rotation of the adjusting screw 30, thereby realizing the dimming function. The fixed support 420 is locked with the connecting seat 430, and the connecting seat 430 is used for connecting the dimming support to realize the driving of the dimming support to realize the dimming requirement. The above-mentioned connecting mode not only realizes the firm connection between the action end 40 and the dimming support, but also facilitates the installation and disassembly, and improves the assembly and maintenance convenience of the dimming structure.

[0047] It should be noted that the rotating ball 410 for realizing the axial movement of the adjusting screw 30 can also adopt a sliding support structure to directly cooperate with the adjusting screw 30 to realize the sliding requirement of the adjusting screw 30 in the axial direction.

[0048] It should be further noted that in some embodiments of the utility model, a sliding channel 4210 is formed on the fixed support 420, and the length extension direction of the sliding channel 4210 is parallel to the axis of the adjusting screw 30. Correspondingly, a limiting block 4110 is protrusively arranged on the rotating ball 410, the limiting block 4110 can slide into the sliding channel 4210, and the rotation limiting of the rotating ball 410 is realized through the two opposite side walls of the sliding channel 4210. The stability of the rotating ball 410 during the movement in the axial direction of the adjusting screw 30 is ensured, and unnecessary rotation of the rotating ball 410 during the movement is effectively prevented, thereby improving the accuracy and reliability of the dimming structure.

[0049] In addition, it should be noted that in some embodiments of the utility model, in order to clearly show the application area of the adjusting screw 30, reduce the assembly difficulty, and avoid the problem of reverse assembly of the adjusting screw 30, the adjusting screw 30 comprises a threaded section 310 and a connecting section 320 arranged in sequence in the axial direction, the threaded section 310 is connected with the action end 40, and the connecting section 320 is fixed with the follower 20. The segmented design makes the adjusting screw 30 better adapt to different connection requirements, improves the flexibility and universality of the dimming structure, and simultaneously the threaded section 310 and the connecting section 320 are isolated through a separation piece 330 to ensure the independence between the threaded section 310 and the connecting section 320, and effectively prevent mutual interference therebetween, thereby improving the movement independence of the corresponding structures on the threaded section 310 and the connecting section 320 during the dimming process of the dimming structure, and avoiding problems such as collision interference.

[0050] The terms "first", "second", "left", "right", and the like as used in the description and the claims of the utility model and the above drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can include steps or units not listed.

[0051] The above description of disclosed embodiments enables those skilled in the art to make or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tamper-evident dimming structure, comprising: include: The adjustment part and the follower part are provided. The adjustment part is used for inserting an adjustment tool and includes a bevel gear. The bevel gear rotates clockwise and counterclockwise along its axis as the adjustment tool rotates. The follower part meshes with the bevel gear and rotates with the bevel gear. An adjusting screw is installed through the follower and rotates synchronously with the follower; The actuating end is spaced apart from the follower and threadedly connected to the adjusting screw. The actuating end moves along the axial direction of the adjusting screw during the rotation of the adjusting screw. The follower part and the bevel gear have at least two meshing positions, and the meshing area of ​​the follower part and the bevel gear can undergo elastic deformation when subjected to a preset pressure to disengage from the bevel gear.

2. The anti-modulation light-blocking structure as described in claim 1, characterized in that, The follower part includes a fixed base and an adjusting spring. The adjusting spring is an annular knot and is fixedly disposed on one side of the fixed base. The fixed base is fixedly connected to the adjusting screw. The adjusting spring is provided with spring teeth protruding on it, and the bevel gear is provided with multiple sets of meshing grooves in its circumferential direction. The root of the spring teeth cooperates with the meshing grooves to realize the synchronous rotation of the fixed seat and the bevel gear. When the fixed seat drives the adjusting screw to rotate to the limit position, the spring teeth lock with the bevel gear. When the rotational force of the bevel gear is greater than the preset pressure, the spring teeth are compressed to realize the switching of the meshing grooves.

3. The anti-modulation light-blocking structure as described in claim 2, characterized in that, The adjusting spring is provided with two spring teeth, and the two spring teeth are located on the same diameter of the adjusting spring; the bevel gear is provided with multiple sets of meshing grooves evenly in the circumferential direction.

4. The anti-modulation light-blocking structure as described in claim 2, characterized in that, The fixed base has an installation groove, and one side of the adjusting spring has a connecting part with a barbed structure that extends out and engages with the installation groove for locking.

5. The anti-modulation light-blocking structure as described in claim 1, characterized in that, The adjustment part includes a bevel gear and a mounting base. The bevel gear is perpendicular to the axis of the bevel gear and meshes with the bevel gear. An adjustment groove is provided on the side of the bevel gear facing away from the bevel gear for the adjustment tool to be inserted and locked. The bevel gear is rotatably mounted on the mounting base.

6. The anti-modulation light-blocking structure as described in claim 5, characterized in that, The outer wall of the bevel gear is provided with a limiting rib, and the mounting base is provided with a limiting groove for the insertion of the limiting rib, and the limiting rib is engaged and limited from both sides in the axial direction of the bevel gear.

7. The anti-modulation light-blocking structure as described in claim 5, characterized in that, The adjusting screw passes through the mounting base, and an annular sealing ring is provided on the adjusting screw in the area where it passes through the mounting base. The sealing ring is pressed together by the adjusting screw and the mounting base.

8. The anti-modulation light-blocking structure as described in claim 1, characterized in that, The actuating end includes a rotating ball, a fixed bracket, and a connecting seat. The rotating ball is sleeved on the outer wall of the adjusting screw and threadedly engaged with the adjusting screw. The fixed bracket is used to hold the rotating ball in place to limit its rotation. The fixed bracket is locked to the connecting seat, which is used to connect to the dimming bracket.

9. The anti-modulation light-blocking structure as described in claim 8, characterized in that, The fixed bracket is provided with a slide rail, the length direction of which is parallel to the axis of the adjusting screw. The rotating ball is provided with a limit block to slide into the slide rail and achieve rotational limitation through the opposite side walls of the slide rail.

10. The anti-modulation structure as described in any one of claims 1-9, characterized in that, The adjusting screw includes a threaded section and a connecting section. The threaded section is connected to the actuating end, and the connecting section is fixed to the follower part. The threaded section and the connecting section are isolated by a separator.

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