Guide rail type double-lens switching driving assembly and switching method thereof

Abstract

The invention relates to the technical field of automobile headlamps, in particular to a guide rail type double-lens switching driving assembly and a switching method thereof.The guide rail type double-lens switching driving assembly comprises a lampshade, an inner barrel is arranged in the lampshade, and a first lens and a second lens are installed on the inner barrel; a lifting assembly is further arranged in the lampshade and can drive the first lens to slide in the radial direction of the inner barrel, the first lens is connected with the second lens through a linkage assembly, and when the first lens acts, the linkage assembly can drive the second lens to move in the direction opposite to the first lens in the radial direction of the inner barrel. Only one group of the first lens and the second lens is coaxial with the inner cylinder; a shielding assembly is arranged on the inner cylinder, when the lifting assembly acts, the driving assembly can drive the shielding assembly to act, the through groove is exposed and maintained in the exposed state, and after the assembly drives the first lens and the second lens to move to the stroke end, the driving assembly can drive the shielding assembly to shield the through groove.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive headlights, and specifically to a rail-type dual-lens switching drive assembly and a switching method thereof. Background Art

[0002] A bi-xenon lens is mostly used in xenon headlights that share one light source for low and high beams. There is a light-shielding plate inside the lens, and the low and high beams are realized by the up and down movement of the light-shielding plate. In this way, only one xenon bulb is needed to achieve the switching between low and high beams.

[0003] Currently, most automotive headlights use xenon headlights. When the driver switches between low and high beams, the vehicle's electronic control system will drive the up and down movement of the light-shielding plate to switch between low and high beams, and use the light-shielding plate to cut and block the upper half of the high beam light beam to achieve the low beam effect; this will cause waste of some of the blocked light, thereby reducing the utilization rate of light; when using the light-shielding plate to switch between low and high beams, the light beam will be blocked instantaneously and then released, which will result in a short but significant interruption of light. This short moment of darkness will cause the driver's perception of the road surface to suddenly disappear, thereby increasing the risk of instantaneous accidents. Summary of the Invention

[0004] The purpose of the present invention is to provide a rail-type dual-lens switching drive assembly and a switching method thereof to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A rail-type dual-lens switching drive assembly includes: a lamp housing, an inner cylinder is arranged inside the lamp housing, and a first lens and a second lens are installed on the inner cylinder; An elevating assembly is further arranged inside the lamp housing. The elevating assembly is connected to the first lens and can drive the first lens to slide along the radial direction of the inner cylinder. And the first lens is connected to the second lens through a linkage assembly. When the first lens moves, the linkage assembly can drive the second lens to move in the radial direction of the inner cylinder in the opposite direction to the first lens, so that the first lens and the second lens pass through a through groove opened on the inner cylinder, and only one group is coaxial with the inner cylinder; A shielding assembly is slidably arranged on the inner cylinder. The shielding assembly is connected to a driving assembly arranged inside the lamp housing. When the elevating assembly moves, the driving assembly can first drive the shielding assembly to move, expose the through groove and maintain it in the exposed state. After the assembly drives the first lens and the second lens to move to the end of the stroke, the driving assembly can drive the shielding assembly to shield the through groove.

[0006] The rail - type dual - lens switching drive assembly as described above: The lifting assembly includes a drive rod rotatably installed in the lamp housing. An elevating sleeve fixedly connected to the first lens is sleeved on the drive rod. A first protrusion is formed on the inner wall of the elevating sleeve, and the first protrusion is slidably disposed in a composite groove formed on the outer wall of the drive rod. When the drive rod rotates, the composite groove cooperates with the first protrusion to drive the elevating sleeve to drive the first lens to move up and down along the axial direction of the drive rod.

[0007] The rail - type dual - lens switching drive assembly as described above: The composite groove includes a spiral groove formed on the outer wall of the drive rod, and the head and tail ends of the spiral groove are respectively connected to a first horizontal groove and a second horizontal groove formed along the circumferential direction of the drive rod.

[0008] The rail - type dual - lens switching drive assembly as described above: The linkage assembly includes a rotating rod rotatably installed in the lamp housing. A first sliding rod and a second sliding rod are arranged on the rotating rod. The first sliding rod is slidably connected to a first sliding rail provided on the first lens, and the second sliding rod is slidably connected to a second sliding rail provided on the second lens.

[0009] The rail - type dual - lens switching drive assembly as described above: The drive assembly includes a driving member and a triggering member. The driving member includes a driven rod rotatably installed in the lamp housing. The driven rod is connected to the drive rod through a toothed belt, and a rotating groove is formed on the outer wall of the driven rod. When the driven rod rotates, the rotating groove cooperates with the triggering member to drive the triggering member to move up and down along the axial direction of the driven rod.

[0010] The rail - type dual - lens switching drive assembly as described above: The triggering member includes a socketing cylinder. The socketing cylinder is slidably disposed in the lamp housing and sleeved on the driven rod. A second protrusion is formed on the inner wall of the socketing cylinder, and the second protrusion is slidably disposed in the rotating groove. A pulley is installed on the outer wall of the socketing cylinder.

[0011] The rail - type dual - lens switching drive assembly as described above: The shielding assembly includes a shielding member and a moving structure. The shielding member includes a light - shielding frame slidably disposed on the inner cylinder. The light - shielding frame includes a first shielding plate and a second shielding plate fixedly connected.

[0012] The rail - type dual - lens switching drive assembly as described above: The moving structure includes a wedge - shaped block fixedly connected to the light - shielding frame. Two sets of insertion cavities are symmetrically formed along the length direction of the wedge - shaped block. Plugging rods fixed to the lamp housing are respectively inserted into the two sets of insertion cavities. Springs are slidably disposed on the plugging rods. One end of the spring abuts against the lamp housing, and the other end abuts against the wedge - shaped block.

[0013] A method for switching the driving assembly of a guide-rail type double-lens is also proposed. Using the guide-rail type double-lens switching driving assembly as described above, it includes the following steps: Step 1: In the initial state, it is default that the second lens is coaxial with the inner cylinder. At this time, it is in the low beam state. When it is necessary to switch to the high beam state, the vehicle electronic control system drives the driving rod to rotate for a certain time and then stops; Step 2: During the rotation of the driving rod, through the connection of the toothed belt, the driven rod rotates synchronously. At this time, under the cooperation of the compound groove with the driving rod and the driven rod with the rotating groove, the driven rod can first drive the socket cylinder to descend. During the descent, the pulley drives the wedge block to drive the light-shielding frame to slide relative to the inner cylinder, exposing the through groove. After the through groove is exposed, the driving rod, under the cooperation of the compound groove, drives the first lens to descend. At the same time, due to the cooperation of the linkage assembly, the second lens ascends; Step 3: When the driving rod drives the first lens to descend to the lowest position, the first lens is coaxial with the inner cylinder, and the high beam state is switched. Immediately afterwards, during the process that the driven rod and the rotating groove continue to cooperate to drive the socket cylinder to continue to descend, the pulley and the wedge block cooperate to drive the light-shielding frame to reset and shield the through groove to avoid light leakage from the inner cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are: By setting the lifting assembly and the linkage assembly, and using the cooperation between the two, the switching of the coaxial state of the first lens and the second lens with the inner cylinder can be quickly realized. And after the first lens or the second lens is coaxial with the inner cylinder, the lens coaxial with the inner cylinder can completely capture the light of the row lights, avoiding the brightness loss generated when the traditional light-shielding plate is used for shielding, thereby improving the lighting effect, providing a clearer road surface vision for the driver, and during the switching process, the lighting port can continuously emit light to provide lighting light for the driver without light interruption, thus improving driving safety; At the same time, by setting the driving assembly and the shielding assembly, during the process that the lifting assembly drives the first lens and the second lens to switch, the driving assembly and the shielding assembly can first expose the through groove on the inner cylinder so that the first lens and the second lens can be inserted into or removed from the inner cylinder, and after the switching is completed, the shielding assembly can shield the through groove so that the inner cylinder is in a closed state, thereby preventing light leakage from the inner cylinder and avoiding the weakening of the intensity of the light irradiated by the lighting port on the road surface, and sequentially providing the best lighting effect for the driver and improving the safety of night driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a guide-rail type double-lens switching driving assembly.

[0016] Figure 2 It is a schematic structural diagram inside the lamp housing in the guide-rail type double-lens switching driving assembly.

[0017] Figure 3 It is a schematic structural diagram of the linkage component in the guide rail type double-lens switching drive assembly.

[0018] Figure 4 It is a schematic structural diagram of the interior of the inner cylinder in the guide rail type double-lens switching drive assembly.

[0019] Figure 5 It is a schematic structural diagram of the cross-section of the first lens and the second lens in the guide rail type double-lens switching drive assembly.

[0020] Figure 6 It is a schematic structural diagram of the cooperation among the linkage component, the first lens and the second lens in the guide rail type double-lens switching drive assembly.

[0021] Figure 7 It is a schematic structural diagram of the cooperation between the lifting component and the driving component in the guide rail type double-lens switching drive assembly.

[0022] Figure 8 It is a schematic structural diagram of the lifting component in the guide rail type double-lens switching drive assembly.

[0023] Figure 9 It is a schematic structural diagram of the driving component and the shielding component in the guide rail type double-lens switching drive assembly.

[0024] Figure 10 It is a schematic structural diagram of the moving structure and the shielding member in the guide rail type double-lens switching drive assembly.

[0025] Figure 11 It is a schematic structural diagram of the moving structure in the guide rail type double-lens switching drive assembly.

[0026] Figure 12 It is a schematic structural diagram of the driving component in the guide rail type double-lens switching drive assembly.

[0027] In the figure: 1, lamp shade; 101, lighting opening; 2, inner cylinder; 201, through groove; 3, guide rail; 4, wedge block; 401, first inclined surface; 402, vertical surface; 403, second inclined surface; 404, insertion cavity; 5, driven rod; 501, rotation groove; 6, driving rod; 601, spiral groove; 602, first horizontal groove; 603, second horizontal groove; 7, light shielding frame; 701, first shielding plate; 702, second shielding plate; 703, first notch; 704, second notch; 8, rotating rod; 801, first sliding rod; 802, second sliding rod; 9, first lens; 901, first baffle; 10, second lens; 1001, second baffle; 11, lifting sleeve; 1101, first protrusion; 12, row of lamps; 13, first slide rail; 14, second slide rail; 15, toothed belt; 16, socket cylinder; 1601, second protrusion; 1602, slider; 17, pulley; 18, insertion rod; 19, spring; 20, synchronous pulley. Detailed implementation manners

[0028] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0029] The special term "exemplary" herein means "serving as an example, embodiment, or illustration". Any embodiment described as "exemplary" herein need not be construed as superior to or better than other embodiments.

[0030] In addition, for a better description of the present application, numerous specific details are given in the following detailed embodiments. Those skilled in the art should understand that the present application can be implemented without some specific details. In some instances, methods, means, and elements well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0031] Please refer to Figures , in an embodiment of the present invention, a guide rail type double-lens switching drive assembly includes: A lamp shade 1, an inner cylinder 2 is arranged inside the lamp shade 1, and a first lens 9 and a second lens 10 are installed on the inner cylinder 2; Preferably, please refer to ​, at one end of the inner cylinder 2 away from the lighting opening 101 of the lamp shade 1, an exhaust lamp 12 is provided, and the exhaust lamp 12 is connected to the vehicle electronic control system; and the first lens 9 is a concave lens, and the second lens 10 is a convex lens; when the exhaust lamp 12 is turned on and the light only passes through the first lens 9, due to the diverging characteristic of the concave lens, at this time, the lighting opening 101 can perform high beam illumination; when the light of the exhaust lamp 12 only passes through the second lens 10, due to the converging characteristic of the convex lens, at this time, the lighting opening 101 can perform low beam illumination; according to actual needs, by changing the coaxial state of the first lens 9 and the second lens 10, the high and low beams of the light can be freely switched, thereby improving the driving safety.

[0032] A lifting assembly is further provided in the lamp shade 1, the lifting assembly is connected to the first lens 9, and can drive the first lens 9 to slide along the radial direction of the inner cylinder 2, and the first lens 9 is connected to the second lens 10 through a linkage assembly. When the first lens 9 moves, the linkage assembly can drive the second lens 10 to move in the radial direction of the inner cylinder 2 in the opposite direction to the first lens 9, so that the first lens 9 and the second lens 10 pass through the through groove 201 opened on the inner cylinder 2, and only one group is coaxial with the inner cylinder 2; Specifically, please refer to ​ , there are two groups of the above-mentioned through grooves 201, and the arc angles of the two groups of through grooves 201 are 180°, so that when the lifting assembly acts, any one of the first lens 9 and the second lens 10 can be inserted into the inner cylinder 2 and kept coaxial with the inner cylinder 2 to realize the high and low beam switching of the light.

[0033] Particularly, due to the cooperation between the groove wall of the through groove 201 and the first lens 9 and the second lens 10, the first lens 9 and the second lens 10 can only be lifted and lowered along the radial direction of the inner cylinder 2, so that when the lifting assembly acts, the coaxial state of the first lens 9 and the second lens 10 with the inner cylinder 2 can be switched.

[0034] Compared with the traditional method of switching between high and low beams by a light shield, the present invention utilizes the cooperation between the lifting assembly and the linkage assembly to quickly complete the switching between high and low beams. After the switching is completed, the first lens 9 or the second lens 10 can completely capture the light of the exhaust lamp 12. Therefore, the lighting effect can be improved and the driving safety can be ensured. At the same time, during the switching process, the light of the exhaust lamp 12 can continuously provide lighting light for the driver through the lighting opening 101, thereby improving the driving safety.

[0035] In detail, please refer to ​ 、 ​ 、 ​ 、 ​ 、 ​, the lifting assembly includes a driving rod 6 rotatably installed in the lamp housing 1. A lifting sleeve 11 fixedly connected to the first lens 9 is sleeved on the driving rod 6. A first protrusion 1101 is formed on the inner wall of the lifting sleeve 11. The first protrusion 1101 is slidably arranged in a composite groove formed on the outer wall of the driving rod 6. When the driving rod 6 rotates, the composite groove cooperates with the first protrusion 1101 to drive the lifting sleeve 11 to drive the first lens 9 to lift along the axial direction of the driving rod 6; The composite groove includes a spiral groove 601 formed on the outer wall of the driving rod 6. The head and tail ends of the spiral groove 601 are respectively connected to a first horizontal groove 602 and a second horizontal groove 603 formed along the circumferential direction of the driving rod 6; In the initial state, the second lens 10 is coaxial with the inner cylinder 2. When the row lamp 12 is turned on, the low beam is emitted from the lighting port 101 (as ​ shown in the state); at this time, the first protrusion 1101 is located at the stroke end of the first horizontal groove 602. When it is necessary to switch the light to the high beam state, the driving rod 6 is driven to rotate counterclockwise by the vehicle electronic control system (refer to ​ , ​ description). During this process, the first protrusion 1101 first slides in the first horizontal groove 602 until the first protrusion 1101 contacts the spiral groove 601. With the continuous rotation of the driving rod 6, the cooperation between the spiral groove 601 and the first protrusion 1101 can force the lifting sleeve 11 to drive the first lens 9 to descend along the axial direction of the driving rod 6. At the same time, under the connection and cooperation of the linkage assembly, the descending first lens 9 can synchronously drive the second lens 10 to rise along the axial direction of the driving rod 6; until the first protrusion 1101 is combined with the second horizontal groove 603, the first lens 9 descends to be coaxial with the inner cylinder 2, and the second lens 10 moves to the outside of the inner cylinder 2; subsequently, during the rotation of the driving rod 6, the first protrusion 1101 will slide in the second horizontal groove 603 until the first protrusion 1101 moves to the stroke end of the second horizontal groove 603, and then the driving rod 6 stops rotating. At this time, the high beam is emitted from the lighting port 101.

[0036] Specifically, please refer to ​ , ​ , ​ , the linkage assembly includes a rotating rod 8 rotatably installed in the lamp housing 1. A first sliding rod 801 and a second sliding rod 802 are arranged on the rotating rod 8. The first sliding rod 801 is slidably connected to a first sliding rail 13 arranged on the first lens 9. The second sliding rod 802 is slidably connected to a second sliding rail 14 arranged on the second lens 10; In the initial state, the first sliding rod 801 and the second sliding rod 802 are respectively located at the stroke ends of the first sliding rail 13 and the second sliding rail 14 near the rotation axis end of the rotating rod 8. Combining the above, when the first lens 9 descends, the first sliding rail 13 presses the first sliding rod 801 downward, causing the rotating rod 8 to rotate counterclockwise. During this process, the first sliding rod 801 slides within the first sliding rail 13, and the second sliding rod 802 slides within the second sliding rail 14, and the second lens 10 is lifted upward. Until the first lens 9 descends to the lowest height and is coaxial with the inner cylinder 2, the second lens 10 rises to the highest position, and the concave lens mirror surface is completely separated from the inner cylinder 2, realizing the switching of the light from the low beam state to the high beam state, thereby providing a relatively clear field of vision for the vehicle owner during driving.

[0037] Further, please refer to ​ 、 ​ 、 ​ 、 ​ 、 ​ 、 ​ 、 ​ 、 ​ 、 ​ A shielding component is slidably arranged on the inner cylinder 2, and the shielding component is connected to a driving component arranged in the lamp housing 1. When the lifting component acts, the driving component can first drive the shielding component to act, expose the through groove 201 and maintain it in the exposed state. After the component drives the first lens 9 and the second lens 10 to move to the stroke ends, the driving component can drive the shielding component to shield the through groove 201.

[0038] The driving component includes a driving part and a triggering part. The driving part includes a driven rod 5 rotatably installed in the lamp housing 1. The driven rod 5 is connected to the driving rod 6 through a toothed belt 15, and a rotating groove 501 is formed on the outer wall of the driven rod 5. When the driven rod 5 rotates, the rotating groove 501 cooperates with the triggering part to drive the triggering part to move up and down along the axial direction of the driven rod 5. Specifically, please refer to ​ 、 ​ 、 ​ 、 ​, on both the driving rod 6 and the driven rod 5, a synchronous pulley 20 is coaxially arranged. The two groups of synchronous pulleys 20 are connected by a toothed belt 15. With the cooperation of the toothed belt 15 and the synchronous pulley 20, the driven rod 5 can rotate synchronously with the driving rod 6. And during the rotation of the driven rod 5, the triggering member can cooperate with the shielding assembly. Before the first lens 9 descends, the through groove 201 is first exposed and maintained in the exposed state, so that the first lens 9 and the second lens 10 can be inserted into or removed from the inner cylinder 2; and after the positions of the first lens 9 and the second lens 10 are stabilized, the shielding assembly is driven to shield the through groove 201, so that the wall of the inner cylinder 2 returns to the airtight state, avoiding light leakage from the inner cylinder 2, thereby reducing the irradiation intensity of the lighting port 101.

[0039] The triggering member includes a sleeved cylinder 16. The sleeved cylinder 16 is slidably arranged in the lamp shade 1, sleeved on the driven rod 5, and a second protrusion 1602 is formed on the inner wall of the sleeved cylinder 16. The second protrusion 1602 is slidably arranged in the rotating groove 501, and a pulley 17 is installed on the outer wall of the sleeved cylinder 16; Specifically, please refer to ​ , ​ , a slider 1601 is arranged on the sleeved cylinder 16. The slider 1601 is slidably connected with a guide rail 3 arranged on the inner wall of the lamp shade 1. With the cooperation of the guide rail 3 and the slider 1601, the sleeved cylinder 16 can only move up and down along the axial direction of the driven rod 5.

[0040] The shielding assembly includes a shielding member and a moving structure. The shielding member includes a light-shielding frame 7 slidably arranged on the inner cylinder 2. The light-shielding frame 7 includes a first shielding plate 701 and a second shielding plate 702 fixedly connected; Specifically, please refer to ​ , ​ , ​ , ​ , a first notch 703 and a second notch 704 are respectively formed on the first shielding plate 701 and the second shielding plate 702. The first notch 703 and the second notch 704 are adapted to a first baffle 901 arranged on the first lens 9 and a second baffle 1001 arranged on the second lens 10; when the lifting assembly and the linkage assembly cooperate to drive the first lens 9 or the second lens 10 to rise to the highest position, the first baffle 901 or the second baffle 1001 can shield the first notch 703 or the second notch 704, and at the same time cooperate with the first shielding plate 701 and the second shielding plate 702, so that the wall of the inner cylinder 2 is in an airtight state, avoiding light leakage, so that the light intensity will not be weakened.

[0041] The movable structure includes a wedge-shaped block 4 fixedly connected to the light shielding frame 7, and the wedge-shaped block 4 has two groups of plug-in cavities 404 symmetrically opened along its length direction. The two groups of plug-in cavities 404 are respectively inserted with plug-in rods 18 fixed to the lampshade 1. A spring 19 is slidably provided on the plug-in rod 18, and one end of the spring 19 abuts against the lampshade 1, and the other end abuts against the wedge-shaped block 4; Preferably, see ​ 、 ​ 、 ​ , the wedge block 4 is set to be an "isosceles trapezoid" structure, such as ​ As shown, it includes a first inclined surface 401, a vertical surface 402, and a second inclined surface 403. In particular, in the initial state, the spring 19 is in a compressed state, pushing the wedge block 4 to move toward the driven rod 5. At this time, the first inclined surface 401 contacts the pulley 17, and the first shield 701 and the second shield 702 can shield the through slot 201.

[0042] In combination with the above, when the driving rod 6 rotates, the driven rod 5, connected to the toothed belt 15, rotates synchronously with the driving rod 6. At this time, the rotating groove 501 cooperates with the second protrusion 1602 to force the sleeve 16 to descend along the axis of the driven rod 5. In detail, during the sliding of the first protrusion 1101 along the first horizontal groove 602, the pulley 17 following the sleeve 16 descends cooperates with the first inclined surface 401 to push the wedge block 4 and the light shielding frame 7 to move toward the right (refer to FIG. ​ ), when the first protrusion 1101 is engaged with the spiral groove 601, the pulley 17 contacts the vertical surface 402. At this time, the first baffle 701 and the second baffle 702 are completely offset from the through groove 201. Subsequently, when the driving rod 6 drives the lifting sleeve 11 to drive the first lens 9 to descend, the pulley 17 slides along the vertical surface 402, which can maintain the state of the wedge block 4 and the light shielding frame 7 unchanged, so that the first lens 9 and the second lens 10 can be inserted into or removed from the inner cylinder 2. When the first lens 9 descends to the lowest position After that, the driving rod 6 continues to rotate, driving the driven rod 5 to rotate. During this process, the sleeve tube 16 continues to descend, and the pulley 17 contacts the second inclined surface 403. At the same time, the spring 19 releases its elastic potential energy, which can push the wedge block 4 and the light-shielding frame 7 to reset; until the driving rod 6 stops rotating, the driven rod 5 drives the sleeve tube 16 to descend to the lowest position with the cooperation of the rotating groove 501. At this time, the light-shielding frame 7 cooperates with the second baffle 1001 to completely shield the through groove 201 to prevent light leakage from the inner tube 2.

[0043] A method for switching a guide rail type dual lens switching drive assembly is also proposed, which uses the guide rail type dual lens switching drive assembly as described above and includes the following steps: Step 1: In the initial state, it is default that the second lens 10 is coaxial with the inner cylinder 2. At this time, it is in the low beam state. When it is necessary to switch to the high beam state, the vehicle electronic control system drives the drive rod 6 to rotate for a certain period of time and then stops. Step 2: During the rotation of the drive rod 6, through the connection of the toothed belt 15, the driven rod 5 rotates synchronously. At this time, with the cooperation of the composite groove with the drive rod 6 and the driven rod 5 with the rotating groove 501, the driven rod 5 can first drive the socket cylinder 16 to descend. During the descending process, the pulley 17 drives the wedge block 4 to drive the light-shielding frame 7 to slide relative to the inner cylinder 2, exposing the through groove 201. After the through groove 201 is exposed, the drive rod 6 drives the first lens 9 to descend under the cooperation of the composite groove. At the same time, due to the cooperation of the linkage assembly, the second lens 10 ascends. Step 3: When the drive rod 6 drives the first lens 9 to descend to the lowest position, the first lens 9 is coaxial with the inner cylinder 2, and the high beam state is switched. Immediately, during the process that the driven rod 5 continues to drive the socket cylinder 16 to descend in cooperation with the rotating groove 501, the pulley 17 and the wedge block 4 cooperate to drive the light-shielding frame 7 to reset and shield the through groove 201 to prevent light leakage from the inner cylinder 2.

[0044] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0045] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A guide rail type double-lens switching drive assembly, comprising: Lamp shade (1), an inner cylinder (2) is arranged inside the lamp shade (1), and a first lens (9) and a second lens (10) are installed on the inner cylinder (2); characterized in that: An elevating assembly is further arranged inside the lamp shade (1), the elevating assembly is connected to the first lens (9), and can drive the first lens (9) to slide along the radial direction of the inner cylinder (2), and the first lens (9) is connected to the second lens (10) through a linkage assembly. When the first lens (9) moves, the linkage assembly can drive the second lens (10) to move in the radial direction of the inner cylinder (2) in the opposite direction to the first lens (9), so that the first lens (9) and the second lens (10) pass through a through groove (201) opened on the inner cylinder (2), and only one group is coaxial with the inner cylinder (2); A shielding assembly is slidably arranged on the inner cylinder (2), the shielding assembly is connected to a driving assembly arranged inside the lamp shade (1). When the elevating assembly moves, the driving assembly can first drive the shielding assembly to move, expose the through groove (201) and maintain it in the exposed state. After the assembly drives the first lens (9) and the second lens (10) to move to the end of the stroke, the driving assembly can drive the shielding assembly to shield the through groove (201).

2. The rail - type dual - lens switching drive assembly according to claim 1, characterized in that, The elevating assembly includes a driving rod (6) rotatably installed inside the lamp shade (1), an elevating sleeve (11) fixedly connected to the first lens (9) is sleeved on the driving rod (6), a first protrusion (1101) is formed on the inner wall of the elevating sleeve (11), and the first protrusion (1101) is slidably arranged in a composite groove opened on the outer wall of the driving rod (6). When the driving rod (6) rotates, the composite groove cooperates with the first protrusion (1101) to drive the elevating sleeve (11) to drive the first lens (9) to move up and down along the axial direction of the driving rod (6).

3. The rail type double-lens switching drive assembly according to claim 2, characterized in that, The composite groove includes a spiral groove (601) opened on the outer wall of the driving rod (6), and the head and tail ends of the spiral groove (601) are respectively connected to a first horizontal groove (602) and a second horizontal groove (603) opened along the circumferential direction of the driving rod (6).

4. The rail-type dual-lens switching drive assembly according to claim 2, wherein, The linkage assembly includes a rotating rod (8) rotatably installed inside the lamp shade (1), a first sliding rod (801) and a second sliding rod (802) are arranged on the rotating rod (8), the first sliding rod (801) is slidably connected to a first sliding rail (13) arranged on the first lens (9), and the second sliding rod (802) is slidably connected to a second sliding rail (14) arranged on the second lens (10).

5. The rail-type dual-lens switching drive assembly according to claim 2, wherein, The driving assembly includes a driving member and a triggering member. The driving member includes a driven rod (5) rotatably mounted in the lamp housing (1). The driven rod (5) is connected to the driving rod (6) through a toothed belt (15). A rotating groove (501) is formed on the outer wall of the driven rod (5). When the driven rod (5) rotates, the rotating groove (501) cooperates with the triggering member to drive the triggering member to move up and down along the axial direction of the driven rod (5).

6. The rail-type dual-lens switching drive assembly according to claim 5, characterized in that, The triggering member includes a sleeved cylinder (16). The sleeved cylinder (16) is slidably arranged in the lamp housing (1) and sleeved on the driven rod (5). A second protrusion (1602) is formed on the inner wall of the sleeved cylinder (16). The second protrusion (1602) is slidably arranged in the rotating groove (501). A pulley (17) is mounted on the outer wall of the sleeved cylinder (16).

7. The rail-type dual-lens switching drive assembly according to claim 2, wherein The shielding assembly includes a shielding member and a moving structure. The shielding member includes a light-shielding frame (7) slidably arranged on the inner cylinder (2). The light-shielding frame (7) includes a first shielding plate (701) and a second shielding plate (702) fixedly connected together.

8. The rail-type dual-lens switching drive assembly according to claim 7, characterized in that, The moving structure includes a wedge block (4) fixedly connected to the light-shielding frame (7). Two sets of insertion cavities (404) are symmetrically formed in the wedge block (4) along its length direction. Insertion rods (18) fixed to the lamp housing (1) are respectively inserted into the two sets of insertion cavities (404). A spring (19) is slidably arranged on the insertion rod (18). One end of the spring (19) abuts against the lamp housing (1), and the other end abuts against the wedge block (4).

9. A switching method for a guide rail type dual-lens switching drive assembly, which uses a guide rail type dual-lens switching drive assembly as described in claim 1, characterized in that, It includes the following steps: Step 1: In the initial state, it is default that the second lens (10) is coaxial with the inner cylinder (2). At this time, it is in the low beam state. When it is necessary to switch to the high beam state, the vehicle electronic control system drives the driving rod (6) to rotate for a certain time and then stops; Step 2: During the rotation of the driving rod (6), through the connection of the toothed belt (15), the driven rod (5) rotates synchronously. At this time, under the cooperation of the composite groove with the driving rod (6) and the cooperation of the driven rod (5) with the rotating groove (501), the driven rod (5) can first drive the sleeved cylinder (16) to descend. During the descending process, the pulley (17) drives the wedge block (4) to drive the light-shielding frame (7) to slide relative to the inner cylinder (2), exposing the through groove (201). After the through groove (201) is exposed, the driving rod (6) drives the first lens (9) to descend under the cooperation of the composite groove. At the same time, due to the cooperation of the linkage assembly, the second lens (10) ascends; Step 3: When the driving rod (6) drives the first lens (9) to descend to the lowest position, the first lens (9) is coaxial with the inner cylinder (2), and the high beam state is switched. Immediately, during the process that the driven rod (5) and the rotating groove (501) continue to cooperate to drive the sleeved cylinder (16) to continue descending, the pulley (17) cooperates with the wedge block (4) to drive the light-shielding frame (7) to reset and shield the through groove (201) to prevent light leakage from the inner cylinder (2).

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