A vehicle lamp angle adjuster

Abstract

The utility model relates to the technical field of automobile headlamp adjustment, particularly relates to a car light angle regulator, including the casing, screw drive mechanism, double gear, jacks and motor, and double gear is driven by motor, and screw drive mechanism is used for converting the rotary motion of double gear into the linear motion of jacks on the casing, and the both end surface center of double gear is equipped with gear shaft, and the casing includes first casing and second casing, and the first casing is equipped with bayonet clamp, and the second casing is equipped with clamping head, and when the first casing and second casing cover, bayonet clamp is surrounded with clamping head, so as to limit gear shaft between the both, solve the problem that the assembly maintenance of current car light regulator corresponding double gear is inconvenient.

Description

Technical Field

[0001] This utility model relates to the field of automotive headlight adjustment technology, and in particular to a headlight angle adjuster. Background Technology

[0002] As an important component of automobiles, headlights are increasingly being used in dimming systems due to the development of automotive safety lighting technology. In particular, headlight dimmers are used in automotive headlights. The working principle of this type of dimmer is that a motor inside the housing drives a double gear to rotate, which in turn drives a screw transmission mechanism to move. This mechanism then drives a push rod to extend or retract, and the ball joint on the push rod causes the reflector bowl of the headlight to swing back and forth on a rotation axis, thereby changing the distance of the light source and illuminating different areas of the vehicle.

[0003] In existing technologies, the positioning of double gears in automotive headlight dimming mechanisms often involves creating shaft holes in the housing, then inserting the gear shaft of the double gear into the corresponding shaft hole to achieve positioning between the housing and the double gear. However, this method has the following drawbacks:

[0004] The traditional method of connecting the shaft hole and the gear shaft requires overcoming the shaft hole fitting force when replacing double gears or related components. This is inconvenient to operate and repeated disassembly and assembly can easily damage the shaft hole. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a vehicle headlight angle adjuster that solves the problem of inconvenient assembly and maintenance of existing vehicle headlight adjusters with corresponding double gears.

[0006] To achieve the above objectives, the present invention provides a vehicle headlight angle adjuster, comprising a housing, a lead screw transmission mechanism, a double gear, a push rod, and a motor. The double gear is driven by the motor, and the lead screw transmission mechanism converts the rotational motion of the double gear into the linear motion of the push rod on the housing. Gear shafts are provided at the center of both ends of the double gear. The housing includes a first housing and a second housing. A latch is provided in the first housing, and a latch is provided in the second housing. When the first housing and the second housing are closed, the latch corresponds to and surrounds the latch to limit the gear shaft between them.

[0007] Furthermore, the bayonet includes a first positioning hole that fits with the gear shaft with clearance and a first guide opening that gradually expands outward along the first positioning hole to guide the gear shaft into the first positioning hole. The bayonet includes a mating surface that matches the shape of the first guide opening and an arc surface that matches the connection between the first positioning hole and the first guide opening.

[0008] By adopting the above technical solution, the first guide opening guides the gear shaft to slide smoothly into the first positioning hole during the assembly and closing of the housing, further reducing the assembly difficulty and precision requirements, making the closing process smoother, and the arc surface design ensures that the clamp head and the clamping hole accurately close the gear shaft after they are engaged.

[0009] Furthermore, the inner wall of the first housing is provided with two first extension ribs corresponding to the positions of the two gear shafts, with a snap-fit ​​on one of the first extension ribs and a slot on the other first extension rib for engaging the gear shaft.

[0010] By adopting the above technical solution, two "first extension ribs" are set in the first housing, and the bayonet and slot are arranged on them respectively, which disperses the support points of the gear shaft. This significantly improves the rigidity and strength of the local support of the gear shaft by the housing, effectively resisting the force and vibration transmitted by gear meshing. The slot provides a simple and effective way to position the gear shaft, which makes it easy to pre-install the double gear on the first housing and realize the positioning of the double gear. When the housing is closed, the bayonet head and the bayonet mouth correspond to each other and close, realizing a more stable two-point positioning.

[0011] Furthermore, the slot includes a second positioning hole that has a clearance fit with the gear shaft and a second guide opening that gradually expands outward along the second positioning hole to guide the gear shaft into the second positioning hole. A limiting protrusion is provided at the connection between the second guide opening and the second positioning hole, and the minimum distance between the two limiting protrusions is less than the diameter of the gear shaft.

[0012] By adopting the above technical solution, the design of the "limiting protrusion" facilitates the locking of the gear shaft within the second positioning hole after it is engaged with the slot and the gear shaft. This prevents the gear shaft from easily disengaging from the second positioning hole after entering through the second guide opening. During assembly, the gear shaft needs to be pushed open by the limiting protrusion to enter the second positioning hole. After entering, the limiting protrusion elastically recovers and locks the gear shaft in place. This greatly enhances the axial holding force of the gear shaft at the slot end, effectively preventing it from accidentally disengaging under vibration or impact, and improving the structural safety of the product during use.

[0013] Furthermore, the limiting protrusion and / or the position of the first extension rib corresponding to the second guide opening is made of solid elastic material.

[0014] By adopting the above technical solution and making the corresponding components into elastic materials, sufficient and recoverable elastic deformation can be ensured during the assembly process, allowing the gear shaft to smoothly open the limiting protrusion and enter the second positioning hole, and reliably spring back and lock after entering the position. At the same time, the elastic material also avoids damage caused by hard collisions and improves the durability of the locking.

[0015] Furthermore, the second housing is provided with a second extension rib, and the clamp is located at the end of the second extension rib away from the second housing.

[0016] By adopting the above technical solution, a "second extension rib" is set on the second shell, which helps the clamp head to cooperate more effectively with the clamping slot of the first shell to complete the encirclement and limiting. At the same time, the extension rib enhances the structural strength of the root of the clamp head, preventing the clamp head from breaking or deforming under force or repeated operation, and ensuring long-term reliable positioning.

[0017] Furthermore, the motor's output end is equipped with an output gear that meshes with the double gear, and the output gear is positioned in the opening direction of the first guide opening.

[0018] By adopting the above technical solution, the output gear can be used to limit the direction of movement of the double gear, thereby improving the stability of the gear shaft when it is fixed in the bayonet and slot.

[0019] Furthermore, the inner walls of the first and second housings are provided with fixing ribs corresponding to the motor position. When the first and second housings are closed, the fixing ribs will position the motor inside the housing.

[0020] By adopting the above technical solution, and by setting dedicated fixing ribs on the inner walls of the first and second housings, these fixing ribs work together to clamp or support the motor from multiple directions when the housing is closed. This eliminates the need for additional motor fixing brackets or screws, simplifies the structure, reduces the number of parts, and, more importantly, directly and firmly integrates the motor into the main structure of the housing, improving the rigidity and stability of the motor installation, reducing vibration and displacement during motor operation, thereby ensuring the stability of the meshing between the motor output gear and the double gear, and improving the performance and lifespan of the entire transmission system.

[0021] Furthermore, the lead screw transmission mechanism includes a gear plate and a lead screw tube. The gear plate has a threaded hole running through it axially, and the lead screw tube is movably screwed into the threaded hole. The push rod is fixed to one end of the lead screw tube.

[0022] By adopting the above technical solution, the double gear drives the toothed disc to rotate. The screw hole inside the toothed disc engages with the threaded screw tube, converting the rotational motion of the toothed disc into the linear motion of the screw tube, which in turn pushes the push rod fixed on the screw tube to extend and retract, thereby realizing the headlight angle adjustment function.

[0023] Furthermore, a limiting structure is provided between the lead screw tube and the inner wall of the housing, which is used to restrict the movement direction of the lead screw tube to its axial direction.

[0024] By adopting the above technical solution, a "limiting structure" is set between the lead screw tube and the inner wall of the housing. Its core function is to constrain the lead screw tube to move only in a straight line along its axial direction (i.e., the direction of extension and retraction of the push rod), strictly preventing the lead screw tube from radially deviating or rotating with the gear plate, and ensuring the straightness and accuracy of the push rod's movement trajectory.

[0025] Compared with the prior art, the advantages of this utility model are:

[0026] This invention utilizes the snap-fit ​​mechanism of the first housing and the snap-fit ​​head of the second housing to automatically close and constrain the gear shaft upon closing. This replaces the traditional method of inserting the gear shaft into a deep hole, significantly reducing assembly precision requirements. During use, precise alignment with the deep hole is unnecessary; approximate placement and closing automatically achieve positioning, improving assembly efficiency and convenience. Simultaneously, the snap-fit ​​structure provides more stable bidirectional limiting, effectively preventing axial movement and radial loosening of the gear shaft, thus enhancing the reliability, durability, and vibration resistance of the mechanism. Furthermore, it simplifies the housing structure, eliminating the need for high-precision deep holes, thereby effectively reducing mold costs and injection molding difficulty. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the regulator structure of this utility model.

[0028] Figure 2 This is an exploded view of the regulator structure of this utility model.

[0029] Figure 3 This is an enlarged view of the structure at point A in the figure of this utility model.

[0030] Figure 4 This is a schematic diagram of the second shell structure of this utility model.

[0031] Figure 5 This is an exploded view of the regulator structure of this utility model.

[0032] Figure 6 This utility model Figure 5 Enlarged view of the structure at point B in the middle.

[0033] Figure 7 This is a schematic diagram of the regulator structure of this utility model.

[0034] Figure 8 This is a schematic diagram of the regulator structure of this utility model.

[0035] In the picture:

[0036] 1. Housing; 11. First housing; 111. First extension rib; 1110. Bayonet; 1111. First positioning hole; 1112. First guide opening; 1112a. First inclined surface; 1112b. Second inclined surface; 1130. Slot; 1131. Second positioning hole; 1132. Second guide opening; 1133. Limiting protrusion.

[0037] 12 Second shell, 121 Second extension rib, 1210 Clip head, 1211 Arc surface, 1212 Mating surface;

[0038] 13 guide grooves;

[0039] 14. Fixing reinforcement.

[0040] 2 double gears, 21 gear shafts.

[0041] 3. Screw drive mechanism, 31. Gear plate, 310. Internal thread, 32. Screw tube, 321. Hook, 322. Guide foot, 32a. External thread, 33. Push rod.

[0042] 4. Sliding handle.

[0043] 5 motors, 51 output gears. Detailed Implementation

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0045] Reference Figure 1 , 2 3 and 4, a vehicle headlight angle adjuster, including a housing 1, a lead screw drive mechanism 3, a double gear 2, a push rod 33, and a motor 5. The housing 1 includes a first housing 11 and a second housing 12, which are detachably connected by a snap-fit ​​or bolt. A cavity is formed inside the housing 1, and the lead screw drive mechanism 3, the double gear 2, and the motor 5 are all located within the cavity. One end of the push rod 33 is movably inserted into the cavity and connected to the lead screw drive mechanism 3. The double gear 2 is driven to rotate by the motor 5. When wheel 2 rotates, it drives the lead screw transmission mechanism 3 to move, thereby driving the push rod 33 to reciprocate linearly on the housing 1, thus adjusting the car reflector. The two ends of the double gear 2 are provided with gear shaft 21. The first housing 11 is provided with a bayonet 1110, and the second housing 12 is provided with a locking head 1210. When the first housing 11 and the second housing 12 are closed, the bayonet 1110 and the locking head 1210 are closed to limit the gear shaft 21 between them, thus fixing the double gear 2.

[0046] In this embodiment, the gear shaft 21 is automatically constrained by the snap-fit ​​1110 of the first housing 11 and the snap-fit ​​1210 of the second housing 12 when they are closed, replacing the traditional method of inserting the gear shaft 21 into a deep hole. This significantly reduces the product assembly precision requirements. During use, precise alignment with the deep hole is unnecessary; only approximate placement is required, and automatic positioning is achieved upon closing, improving assembly efficiency and convenience. Simultaneously, the closing structure of the snap-fit ​​1210 and snap-fit ​​1110 provides more stable bidirectional limiting, effectively preventing axial movement and radial loosening of the gear shaft 21, thus enhancing the reliability, durability, and vibration resistance of the mechanism. Furthermore, it simplifies the structure of the housing 1, eliminating the need for high-precision deep holes, thereby effectively reducing mold costs and injection molding difficulty.

[0047] Reference Figure 2 , 34. As a specific embodiment of the bayonet 1110, the bayonet 1110 includes a first positioning hole 1111 that is clearance-fitted with the gear shaft 21 and a first guide opening 1112 that gradually expands outward along the first positioning hole 1111 to guide the gear shaft 21 into the first positioning hole 1111. The chuck 1210 includes a mating surface 1212 that is adapted to the shape of the first guide opening 1112 and an arc surface 1211 that is adapted to the connection between the first positioning hole 1111 and the first guide opening 1112. When the double gear 2 is installed in the housing 1... First, the gear shaft 21 can be pressed into the first positioning hole 1111 along the first guide opening 1112. Then, after the second housing 12 is closed with the first housing 11, the mating surface 1212 of the chuck 1210 is correspondingly attached to the first guide opening 1112, and the arc surface 1211 is correspondingly located at the connection between the first positioning hole 1111 and the second guide opening 1132. At this point, the circumference of the gear shaft 21 is surrounded by the first positioning hole 1111 and the arc surface 1211, and the gear shaft 21 is stably limited in the first positioning hole 1111.

[0048] In this embodiment, the first guide opening 1112 includes a first inclined surface 1112a and a second inclined surface 1112b. The two inclined surfaces unfold at an acute angle to form a funnel shape that guides the gear shaft 21 into the first positioning hole 1111. The mating surface 1212 of the chuck 1210 is correspondingly provided on both sides of the arc surface 1211. That is, after the chuck 1210 and the chuck 1110 are mated, the gear shaft 21 will be stably limited in the first positioning hole 1111. In this way, the positioning and installation of the double gear 2 can be quickly completed by disassembling and assembling the first housing 11 and the second housing 12.

[0049] In this embodiment, the bayonet 1110 can be directly formed on the first housing 11. Given the different sizes of the double gears 2 and the housing 1, in order to facilitate the contact between the bayonet 1110 and the gear shaft 21, a first extension rib 111 is formed on the inner wall of the first housing 11. The corresponding bayonet 1110 is located at the free end of the first extension rib 111. Similarly, a second extension rib 121 can be provided on the second housing 12 to set the bayonet 1210.

[0050] To further optimize the product structure and improve the ease of assembly of the double gear 2, in the above embodiment, since the double gear 2 has gear shafts 21 at both its upper and lower ends, two first extension ribs 111 are also provided on the inner wall of the first housing 11, and two second extension ribs 121 are also provided on the second housing 12. Two clips 1210 are formed at the free ends of the two second extension ribs 121. In this embodiment, referring to... Figure 5 One of the two first extension ribs 111 can have its slot 1110 replaced with a groove 1130, for example, a groove 1130 is set on the first extension rib 111 set at the upper end.

[0051] Specifically, refer to Figure 5 and 6 The slot 1130 includes a second positioning hole 1131 that has a clearance fit with the gear shaft 21 and a second guide opening 1132 that gradually expands outward along the second positioning hole 1131 to guide the gear shaft 21 into the second positioning hole 1131. A limiting protrusion 1133 is provided at the connection between the second guide opening 1132 and the inner wall of the second positioning hole 1131. The minimum distance between the two limiting protrusions 1133 is less than the diameter of the gear shaft 21. Thus, when the gear shaft 21 is assembled with the first housing 11, the gear shaft 21 is positioned within the second positioning hole 1131, and due to the limiting protrusion 1133... The presence of the limiting protrusion 1133 prevents the gear shaft 21 from easily disengaging from the second positioning hole 1131. During assembly, the gear shaft 21 needs to be pushed open by the limiting protrusion 1133 to enter the second positioning hole 1131. After entering, the limiting protrusion 1133 elastically recovers and locks the gear shaft 21. This greatly enhances the axial holding force of the gear shaft 21 at the end of the slot 1130, effectively preventing it from accidentally disengaging under vibration or impact, improving the structural safety of the product during use, and also facilitating the initial installation between the double gear 2 and the first housing 11, so that the second housing 12 can be closed with the first housing 11 later.

[0052] In this embodiment, the function of the limiting protrusion 1133 is to prevent the gear shaft 21, which has entered the second positioning hole 1131, from accidentally dislodging from the second positioning hole 1131. At the same time, it can effectively avoid the gear shaft 21 when it enters the second positioning hole 1131 through the second guide opening 1132, so that the gear shaft 21 can enter the second positioning hole 1131. The limiting protrusion 1133 is made of an elastic material, or the material of the second extension rib 121 corresponding to the position of the second guide opening 1132 is made of an elastic material, such as plastic, metal plate, etc. As long as the above-mentioned function of limiting the gear shaft 21 can be satisfied, the limiting protrusion 1133 can also be made of other materials, which will not be elaborated here.

[0053] In this embodiment, taking the first extension rib 111 as a solid elastic material as an example, the limiting protrusion 1133 can be provided as one, two, or more. Taking two as an example, the minimum distance between the two limiting protrusions 1133 is less than the diameter of the gear shaft 21, so that after the gear shaft 21 enters the second positioning hole 1131, the limiting protrusion 1133 can limit the gear shaft 21. Of course, the elastic coefficient of the second extension rib 121 is different. The minimum distance between the two limiting protrusions 1133 is preferably between the radius and diameter of the gear shaft 21. It can only ensure that when the gear shaft 21 passes through the second guide opening 1132, the gear shaft 21 can open the limiting protrusion 1133 to enter the second positioning hole 1131. After entering, the limiting protrusion 1133 elastically recovers and locks the gear shaft 21. The distance between the two limiting protrusions 1133 can also be larger or smaller.

[0054] To improve the stability of the double gear 2 when it is fixed in the slot 1130 and the bayonet 1110 via the gear shaft 21, in this embodiment, referring to... Figure 2 The output end of the motor 5 is provided with an output gear 51, which meshes with the double gear 2. The output gear 51 is set in the opening direction of the first guide opening 1112. In this way, the output gear 51 limits the movement direction of the double gear 2, thereby improving the structural stability of the double gear 2 after assembly.

[0055] In this embodiment, to facilitate the fixing of motor 5, refer to Figure 1 and 5 The inner walls of the first housing 11 and the second housing 12 are provided with fixing ribs 14 corresponding to the position of the motor 5. When the first housing 11 and the second housing 12 are closed, the fixing ribs 14 position the motor 5 inside the housing 1. In this way, by setting dedicated fixing ribs 14 on the inner walls of the first housing 11 and the second housing 12, when the housing 1 is closed, these fixing ribs 14 work together to clamp or support the motor 5 from multiple directions. This eliminates the need for additional motor 5 fixing brackets or screws, simplifies the structure, reduces the number of parts, and more importantly, it directly and firmly integrates the motor 5 into the main structure of the housing 1, improving the rigidity and stability of the motor 5 installation, reducing the vibration and displacement of the motor 5 during operation, thereby ensuring the stability of the meshing between the output gear of the motor 5 and the double gear 2, and improving the performance and life of the entire transmission system.

[0056] Based on the above embodiments, referring to Figure 7 and 8 The lead screw drive mechanism 3 includes a gear disc 31 and a lead screw tube 32. The gear disc 31 is rotatably mounted on the housing 1 and has a threaded hole axially penetrating its interior. The threaded hole has an internal thread 310. The lead screw tube 32 has an external thread 32a that is adapted to form a thread. The outer side of the gear disc 31 has a gear ring that meshes with the double gear 2. When the motor 5 drives the output gear 51 to rotate, the output gear 51 drives the double gear 2 to rotate, and the double gear 2 then drives the gear disc 31 to rotate. During the rotation of the gear disc 31, the lead screw tube 32 reciprocates linearly within it. The lower end of the push rod 33 is correspondingly installed at one end of the lead screw tube 32. Thus, the reciprocating linear motion of the lead screw tube 32 drives the linear motion of the push rod 33.

[0057] In this embodiment, to prevent the lead screw tube 32 from rotating circumferentially during the engagement of the toothed disc 31 with the lead screw tube 32, the direction of movement is limited to its axial direction. A limiting structure is provided between the lower end of the lead screw tube 32 and the first housing 11. See the specific details below. Figure 5The lower end of the lead screw tube 32 is provided with a guide foot 322. The inner wall of the first housing 11 is provided with a guide groove 13 along the axial direction of the lead screw tube 32. The guide foot 322 is slidably disposed in the guide groove 13. Thus, when the gear plate 31 meshes with the lead screw tube 32 and rotates, the lead screw tube 32 can only produce linear motion and does not rotate circumferentially due to the restriction of the guide foot 322 and the guide groove 13.

[0058] In this embodiment, in order to facilitate accurate detection of the movement of the push rod 33 and indirectly obtain the degree of adjustment of the light angle after the displacement of the push rod 33, a sliding potentiometer is also provided inside the housing 1. The sliding potentiometer is connected to the internal circuit of the regulator. The lower end of the lead screw tube 32 also has a hook 321, which is connected to the sliding handle 4 of the sliding potentiometer. In this way, the physical quantity of the displacement of the lead screw tube 32 is converted into an electrical signal by the sliding potentiometer, which makes it easy to intuitively monitor and obtain the real-time adjustment angle of the regulator for the light, effectively improving the intelligence level of the product.

[0059] Although the preferred embodiments of the present invention have been described in detail above, it should be clearly understood that various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle headlamp angle adjuster comprising a housing, a screw drive mechanism, a double gear, a jacking rod and a motor, the double gear being driven by the motor, the screw drive mechanism being used to convert the rotary motion of the double gear into the linear motion of the jacking rod on the housing, characterized in that, The double gear has a gear shaft at the center of both ends. The housing includes a first housing and a second housing. The first housing has a latch, and the second housing has a latch. When the first housing and the second housing are closed, the latch and the latch surround each other to limit the gear shaft between them. ​ 2. The vehicle lamp angle adjuster according to claim 1, characterized by The bayonet includes a first positioning hole that is clearance-fitted with the gear shaft and a first guide opening that gradually expands outward along the first positioning hole to guide the gear shaft into the first positioning hole. The bayonet includes a mating surface that is adapted to the shape of the first guide opening and an arc surface that is adapted to the connection between the first positioning hole and the first guide opening.

3. The vehicle lamp angle adjuster according to claim 1 or 2, characterized by The inner wall of the first housing is provided with two first extension ribs corresponding to the positions of the two gear shafts. The bayonet is provided on one of the first extension ribs, and the other first extension rib is provided with a slot for engaging the gear shaft.

4. The vehicle lamp angle adjuster according to claim 3, characterized by The slot includes a second positioning hole that has a clearance fit with the gear shaft and a second guide opening that gradually expands outward along the second positioning hole to guide the gear shaft into the second positioning hole. A limiting protrusion is provided at the connection between the second guide opening and the second positioning hole, and the minimum distance between the two limiting protrusions is less than the diameter of the gear shaft.

5. The vehicle lamp angle adjuster according to claim 4, characterized by The limiting protrusion and / or the position of the first extension rib corresponding to the second guide opening is made of solid elastic material.

6. The vehicle lamp angle adjuster according to claim 1 or 2, characterized by The second housing is provided with a second extension rib, and the clamp head is located at the end of the second extension rib away from the second housing.

7. The vehicle lamp angle adjuster according to claim 2, characterized by The output end of the motor is provided with an output gear that meshes with the double gear, and the output gear is positioned in the opening direction of the first guide opening.

8. The vehicle lamp angle adjuster according to claim 1, characterized by The inner walls of the first housing and the second housing are provided with fixing ribs corresponding to the position of the motor. When the first housing and the second housing are closed, the fixing ribs position the motor inside the housing.

9. The vehicle lamp angle adjuster according to claim 1, characterized by The lead screw transmission mechanism includes a gear plate and a lead screw tube. The gear plate has a threaded hole extending through it axially. The lead screw tube is movably screwed into the threaded hole, and the push rod is fixed to one end of the lead screw tube.

10. The vehicle lamp angle adjuster according to claim 9, characterized by A limiting structure is provided between the lead screw tube and the inner wall of the housing, the limiting structure being used to restrict the movement direction of the lead screw tube to its axial direction.

Images