CN109424921B - Light modulation mechanism - Google Patents
Light modulation mechanism Download PDFInfo
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- CN109424921B CN109424921B CN201710500928.XA CN201710500928A CN109424921B CN 109424921 B CN109424921 B CN 109424921B CN 201710500928 A CN201710500928 A CN 201710500928A CN 109424921 B CN109424921 B CN 109424921B
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Abstract
The present invention provides a dimming mechanism, comprising: the device comprises a light-emitting part, a transmission part and a limiting part; the light emitting part comprises a first light emitting module and a second light emitting module; the first light-emitting module and the second light-emitting module are arranged in parallel, and the second light-emitting module is connected with a rotating center on the limiting component; the transmission component is connected with the light-emitting component and can drive the second light-emitting module to rotate relative to the first light-emitting module around the rotation center; and the limiting component comprises a rotation center, is connected with the first light-emitting module and the second light-emitting module and limits the central axis of the rotation track of the second light-emitting module to coincide with the central axis of the rotation center. The dimming mechanism enables the second light-emitting module to rotate relative to the first light-emitting module around the central axis of the rotation center; not only the first and second light emitting modules are connected together so that they are not separated from each other; and the rotation track of the second light-emitting module can be limited, so that the light type adjustment with high precision is realized.
Description
Technical Field
The invention relates to the technical field of light type adjustment, in particular to a dimming mechanism.
Background
The existing car lamp dimming mechanism utilizes a mechanical transmission structure to adjust a far-near light optical system and a near-far light optical system, and changes the illumination visual field under different road conditions through the dimming mechanism so as to meet the illumination requirements under different road conditions and provide the best illumination effect for a driver. In order to meet the lighting requirements under different road conditions and improve the competitiveness of products, more and more automobiles are provided with AFS intelligent high beam systems, and intelligent control over light is achieved by utilizing sensors and mechanical dimming structures, so that the lighting requirements under different road conditions are met.
With the development of the technology, the lighting mechanism of the car lamp is also improved, and the appearance of the LED makes the adjusting system of the high beam and the low beam more intelligent. If the light-emitting structure of the LED is not in a single shape but is LED particles with alternate light and shade, and the effect of intersection of light and shade between two groups of LED modules needs to be achieved, the light type can not generate dark spots. Therefore, the existing AFS adjusting system cannot realize high-precision transmission between two modules by performing relative rotation adjustment on two sets of LED modules, so as to enable the two modules to rotate relatively.
Disclosure of Invention
In view of the above, the present invention is directed to a light adjusting mechanism to solve the problem that the light adjusting mechanism in the prior art cannot realize high-precision transmission between two modules.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a dimming mechanism comprising: the device comprises a light-emitting part, a transmission part and a limiting part; the light emitting part comprises a first light emitting module and a second light emitting module; the first light-emitting module and the second light-emitting module are arranged in parallel, and the second light-emitting module is connected with a rotation center on the limiting component; the transmission component is connected with the light-emitting component and can drive the second light-emitting module to rotate around the rotation center relative to the first light-emitting module; the limiting component comprises a rotation center, is connected with the first light-emitting module and the second light-emitting module, and limits the central axis of the rotation track of the second light-emitting module to be coincident with the central axis of the rotation center.
Further: the transmission member includes: the first transmission part, the second transmission part and the third transmission part; the first transmission part and the second transmission part are in gear transmission, so that the second transmission part can rotate along with the rotation of the first transmission part; the second transmission part and the third transmission part are in threaded transmission, so that the third transmission part can move up and down along the second transmission part along with the rotation of the second transmission part; the third transmission part and the second light emitting module are in curve transmission through a connecting rod, so that the second light emitting module rotates along with the up-and-down movement of the third transmission part.
Further, the first transmission portion includes: a first gear and a first rotating shaft; the first gear is arranged at one end of the first rotating shaft and rotates along with the rotation of the first rotating shaft; the second transmission portion with first transmission portion sets up perpendicularly, includes: the second gear is arranged at one end of the second rotating shaft; the second gear is meshed with the first gear and can drive the second rotating shaft to rotate along with the rotation of the first gear; the outer surface of the second rotating shaft is provided with a first thread; the third transmission portion includes: one end of the transmission rod is provided with a transmission base, a groove is formed in the transmission base, and a second thread is arranged on the surface of the groove; the second rotating shaft is arranged in the groove, a first thread on the outer surface of the second rotating shaft is meshed with a second thread on the surface of the groove, and the transmission rod can move up and down along the second rotating shaft along with the rotation of the second rotating shaft; the other end of the transmission rod and the second light-emitting module are in curve transmission through the connecting rod.
Further, the third transmission part further includes: the first fixing piece is connected with the end face of the transmission base and forms a through hole allowing the second rotating shaft to pass through with a groove in the transmission base, and the first fixing piece abuts against the second rotating shaft in the groove.
Further: the number of the first gears is two, the first gears are connected with the first rotating shaft, and a space is reserved between the two first gears; the number of the second transmission parts is two, and the second gears correspond to and are meshed with the first gears one by one; the number of the grooves is two, and the grooves and the second rotating shafts are arranged in a one-to-one correspondence mode.
Further: the other end of the transmission rod is provided with a transmission boss, the surface of the second light-emitting module, which is close to the first light-emitting module, is provided with a transmission limiting groove, the transmission boss is embedded into the transmission limiting groove and can move in the transmission limiting groove along with the movement of the transmission rod, and the second light-emitting module rotates along with the movement of the transmission rod. Further:
further: the transmission limiting groove is a semicircular limiting groove, and the semicircular limiting groove is far away from the second transmission part.
Further, the first transmission unit further includes: and the adjusting part is connected with the other end of the first rotating shaft and used for adjusting the number of rotating turns of the first rotating shaft.
Further, the position limiting component comprises: the limiting rod is arranged between the first light-emitting module and the second light-emitting module and connected with the first light-emitting module, and the center of the limiting rod is provided with the rotating center; two ends of the limiting rod extend to the outer side of the second light-emitting module respectively, and two ends of the limiting rod are provided with first limiting holes respectively; the second light-emitting module is provided with a circular limiting track, part of the limiting track is positioned inside the second light-emitting module, part of the limiting track is positioned outside the second light-emitting module, and the limiting track positioned outside the second light-emitting module penetrates through the first limiting holes at the two ends of the limiting rod; the circle center of the circular limiting track is located on the central axis of the rotating center.
Further, the rotation center includes: the second light-emitting module is provided with a limiting table, the size of the limiting table is matched with that of the second limiting hole, and the limiting table is embedded into the second limiting hole and can freely rotate in the second limiting hole.
Compared with the prior art, the dimming mechanism has the following advantages:
the transmission component of the dimming mechanism can enable the second light-emitting module to rotate relative to the first light-emitting module around the central axis of the rotation center; the limiting part not only connects the first light-emitting module and the second light-emitting module together, but also prevents the first light-emitting module and the second light-emitting module from being separated from each other; and the rotation track of the second light-emitting module can be limited, so that the light type adjustment with high precision is realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a first schematic structural diagram of a dimming mechanism according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a dimming mechanism according to an embodiment of the present invention;
fig. 3 is a first schematic structural diagram of a first light-emitting module, a transmission component and a limiting component of the dimming mechanism according to the embodiment of the present invention;
fig. 4 is a second schematic structural diagram of the first light-emitting module, the transmission component and the limiting component of the dimming mechanism according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second light emitting module of the dimming mechanism according to the embodiment of the invention;
FIG. 6 is a rear view of a second light module of the dimming mechanism of the present embodiment;
fig. 7 is a schematic structural diagram of a first transmission part of the dimming mechanism according to the embodiment of the invention;
fig. 8 is a schematic structural diagram of a second transmission part of the dimming mechanism according to the embodiment of the invention;
fig. 9 is a schematic structural diagram of a third transmission part of the dimming mechanism according to the embodiment of the invention;
fig. 10 is a schematic structural diagram of a first stator of the dimming mechanism according to the embodiment of the present invention;
fig. 11 is another schematic structural diagram of the first stator of the dimming mechanism according to the embodiment of the present invention;
fig. 12 is a schematic structural diagram of a housing of a first light-emitting module of the dimming mechanism according to the embodiment of the present invention;
fig. 13 is a schematic structural view of a first mounting case of the dimming mechanism according to the embodiment of the present invention;
fig. 14 is a schematic structural view of a second mounting case of the dimming mechanism according to the embodiment of the present invention;
fig. 15 is a schematic structural view of a limiting rod of the dimming mechanism according to the embodiment of the present invention;
fig. 16 is a schematic structural diagram of a first semicircular groove of the dimming mechanism according to the embodiment of the present invention;
fig. 17 is a schematic structural view of a second semicircular groove of the dimming mechanism according to the embodiment of the present invention;
fig. 18 is a schematic structural diagram of a second stator of the dimming mechanism according to the embodiment of the present invention;
fig. 19 is a schematic view of the rotation angle of the light adjusting mechanism according to the embodiment of the present invention;
fig. 20 is an enlarged schematic view at C of fig. 19.
Description of reference numerals:
1-a first light-emitting module, 2-a second light-emitting module, 3-a first transmission part, 4-a second transmission part, 5-a third transmission part, 6-a limiting component, 7-a first mounting shell, 8-a second mounting shell, 11-a first shell of the first light-emitting module, 12-a second shell of the first light-emitting module, 21-a first shell of the second light-emitting module, 22-a limiting table, 23-a transmission limiting groove, 24-a limiting track, 31-a first gear, 32-a first rotating shaft, 33-an adjusting part, 34-a first limiting groove, 41-a second gear, 42-a second rotating shaft, 43-a second limiting groove, 44-a third limiting groove, 51-a transmission base, 52-a transmission rod, 53-a groove, 54-a transmission boss, 55-a first fastener, 56-a first fixing piece, 61-a limiting rod, 62-a first limiting hole, 63-a second limiting hole, 64-a first semicircular groove, 65-a second semicircular groove, 66-a second fixing piece, 67-a second fastener, 561-a first arc-shaped piece, 562-a first strip-shaped piece, 563-a first clamping hole, 564-a first connecting piece, 641-a bulge, 651-a positioning hole, 661-a second arc-shaped piece, 662-a second strip-shaped piece, 663-a second clamping hole.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment of the invention discloses a dimming mechanism. This dimming mechanism includes: the light emitting component comprises a light emitting component, a transmission component and a limiting component.
The light emitting part includes a first light emitting module and a second light emitting module. The first light-emitting module and the second light-emitting module are arranged in parallel, and the second light-emitting module is connected with a rotating center on the limiting component. The first and second light emitting modules may be high beam modules.
And the transmission component is connected with the light emitting component and can drive the second light emitting module to rotate relative to the first light emitting module around the rotation center.
And the limiting component comprises a rotation center. The limiting component is connected with the first light-emitting module and the second light-emitting module and limits the central axis of the rotation track of the second light-emitting module to be coincident with the central axis of the rotation center.
Through the structural design, the transmission component of the dimming mechanism can enable the second light-emitting module to rotate relative to the first light-emitting module around the central axis of the rotation center; the limiting part not only connects the first light-emitting module and the second light-emitting module together, but also prevents the first light-emitting module and the second light-emitting module from being separated from each other; and the rotation track of the second light-emitting module can be limited, so that the light type adjustment with high precision is realized.
Specifically, the transmission part includes: the first transmission part, the second transmission part and the third transmission part. The first transmission part and the second transmission part are in transmission through gears, so that the second transmission part can rotate along with the rotation of the first transmission part. The second transmission part and the third transmission part are in transmission through threads, so that the third transmission part moves up and down along the second transmission part along with the rotation of the second transmission part. The third transmission part and the second light-emitting module are in curve transmission through the connecting rod, so that the second light-emitting module rotates along with the up-and-down movement of the third transmission part.
Therefore, through the structural design, the dimming mechanism enables the second transmission part to rotate through the rotation of the first transmission part; the third transmission part moves up and down through the rotation of the second rotation part; the second light emitting module can rotate around the central shaft of the rotation center through the up-and-down movement of the third transmission part, so that a rotation-up-and-down movement-rotation transmission mode is realized, and the rotation angle of the second light emitting module can be accurately adjusted through the transmission mode.
Referring to fig. 1 to 18, a dimming mechanism according to an embodiment of the present invention is shown. In a preferred embodiment of the present invention, as shown in fig. 7, the first transmission part 3 includes: a first gear 31 and a first shaft 32. The first gear 31 is provided at one end of the first rotating shaft 32 and rotates with the rotation of the first rotating shaft 32. Preferably, the first gear 31 is a bevel gear. In the preferred embodiment, for convenience of structural layout, the first transmission part 3 is located at the second housing 12 of the first light-emitting module 1. The second housing 12 of the first light-emitting module 1 is a housing adjacent to the first housing 11 of the first light-emitting module 1. The first housing 11 of the first light emitting module 1 faces the second light emitting module 2.
As shown in fig. 8, the second transmission part 4 is disposed perpendicular to the first transmission part 3. The second transmission portion 4 includes: a second gear 41 and a second shaft 42. The second gear 41 is provided at one end of the second rotation shaft 42. The second gear 41 is engaged with the first gear 31 and can rotate the second rotating shaft 42 with the rotation of the first gear 31. The outer surface of the second shaft 42 has a first thread. Preferably, the second gear 41 is a bevel gear, and the first rotating shaft 32 and the second rotating shaft 42 are perpendicular. In the preferred embodiment, the second transmission part 4 is located at the second housing 12 of the first light emitting module 1 for convenience of structural layout.
As shown in fig. 9, the third transmission part 5 includes: a transmission rod 52. One end of the transmission lever 52 has a transmission base 51. Preferably, the driving lever 52 and the driving base 51 are perpendicular to each other to form an L-shape. The transmission base 51 is provided with a groove 53. The surface of the recess 53 has a second thread. The second shaft 42 is disposed in the groove 53, and the first thread of the outer surface of the second shaft 42 is engaged with the second thread of the surface of the groove 53, so that the transmission rod 52 can move up and down along the second shaft 42 with the rotation of the second shaft 42. The other end of the transmission rod 52 and the second light emitting module 2 are driven in a curve through a connecting rod. In the preferred embodiment, for convenience of structural layout, the transmission base 51 is also located at the second housing 12 of the first light-emitting module 1.
The transmission is realized in a combined mode of gear engagement and thread engagement, so that the transmission precision is improved, and the adjustment and control of small-stroke movement are facilitated; and, adopt the form of gear drive between first transmission portion 3 and the second transmission portion 4, guarantee transmission precision and bulk strength.
In addition, the second rotating shaft 42 may be disengaged from the groove 53 due to the force between the second rotating shaft 42 and the transmission base 51 during the rotation process; therefore, in order to make the transmission base 51 not easily separated from the second rotation shaft 42 during the rotation, the third transmission part 5 further includes: and a first fixing piece 56 for limiting the displacement of the second rotating shaft 42. The first fixing piece 56 is connected to an end surface of the transmission base 51, and forms a through hole allowing the second rotation shaft 42 to pass through with the groove 53 of the transmission base 51. The first fixing piece 56 abuts the second rotating shaft 42 in the groove 53, thereby preventing the second rotating shaft 42 from falling off from the groove 53, so that the first thread of the second rotating shaft 42 and the second thread of the groove 53 can be tightly engaged.
Specifically, as shown in fig. 10, the first fixing piece 56 according to an embodiment of the present invention has the following structure: the first fixing piece 56 is composed of a first arc-shaped piece 561 and first strip-shaped pieces 562 positioned at both ends of the first arc-shaped piece 561. The arc of the first arcuate tab 561 matches the arc of the groove 53. The first strip 562 is parallel to the end surface of the transmission base 51, and the first strip 562 is provided with a first clamping hole 563. The end surface of the transmission base 51 is provided with a first catch 55. The first catch 55 is preferably wedge-shaped. The first fastener 55 is inserted into the first fastener hole 563 to fixedly connect the first fixing piece 56 to the transmission base 51. The clamping mode can reduce the occupied space.
In order to stabilize the whole transmission process, it is preferable that the number of the first gears 31 is two and each is connected to the first rotating shaft 32. Specifically, two first gears 31 are provided at an end of the first shaft 32 at an interval. The number of the second transmission portions 4 is two, that is, the number of the second gears 41 and the second rotation shafts 42 is also two. Each second gear 41 is disposed at one end of each second rotating shaft 42. The two second rotating shafts 42 are arranged in parallel. The second gears 41 correspond to and mesh with the first gears 31 one to one. The number of the grooves 53 is two, and the grooves 53 are arranged in one-to-one correspondence with the second rotating shafts 42. Also, as shown in fig. 11, the first fixing piece 56 has two first arc-shaped pieces 561 arranged in one-to-one correspondence with the grooves 53. The two first arc-shaped pieces 561 may be connected by a first connection piece 564. The two first strip pieces 562 are respectively disposed at one ends of the two first arc-shaped pieces 561 opposite to the first connection pieces 564.
Specifically, the other end of the transmission rod 52 is provided with a transmission boss 54. The second light emitting module 2 is provided with a transmission limit groove 23 on the surface close to the first light emitting module 1. Specifically, in this embodiment, the transmission limiting groove 23 is disposed on the first housing 21 of the second light emitting module 2. The first housing 21 of the second light emitting module 2 faces the first housing 11 of the first light emitting module 1. The size of the transmission boss 54 matches the size of the transmission limit groove 23. The transmission boss 54 is embedded in the transmission limiting groove 23 and can move in the transmission limiting groove 23 along with the movement of the transmission rod 52. The second light emitting module 2 rotates with the movement of the driving lever 52.
Through the above structural design, the transmission boss 54 can only move in the space limited by the transmission limiting groove 23 due to the limitation of the transmission limiting groove 23. Due to the movement of the transmission boss 54, the transmission boss 54 applies force to the edge of the transmission limiting groove 23, thereby driving the second light emitting module 2 to rotate.
Specifically, the transmission limiting groove 23 is a semicircular limiting groove, and the semicircular limiting groove is far away from the second transmission part 4. The shape of the drive limiting groove 23 defines the angle by which the second light emitting module 2 can be rotated.
In order to avoid the interference between the second light emitting module 2 and the third transmission part 3 during the rotation process, the transmission limiting groove 23 is bent in a direction away from the second rotation part 4 (taking fig. 6 as an example, the transmission limiting groove 23 is a circular left circular part), and when the third transmission part 5 ascends, the second light emitting module 2 rotates counterclockwise.
In order to precisely control the rotation angle of the first rotating shaft 32, the first transmission part 3 further includes: and an adjusting portion 33. The adjusting portion 33 is connected to the other end of the first rotating shaft 32 for adjusting the number of rotations of the first rotating shaft 32. Specifically, the adjustment portion 33 may be manually adjusted, or may be automatically adjusted by connecting a mechanism such as a motor.
Since the embodiment of the present invention needs to ensure that the first rotating shaft 32 can only rotate around the axial direction of the first rotating shaft 32 and cannot move along the axial direction of the first rotating shaft 32 or perpendicular to the axial direction of the first rotating shaft 32, the first rotating shaft 32 needs to be limited. Specifically, the limit of the first rotating shaft 32 is realized by the following structure:
as shown in fig. 7, the outer surface of the first rotating shaft 32 is provided with at least one first stopper groove 34. Preferably, if only one first gear 31 is disposed on the first rotating shaft 32, the number of the first limiting grooves 34 is preferably two, and preferably two first limiting grooves are disposed at two ends of the first rotating shaft 32. Preferably, if two first gears 31 are provided on the first rotating shaft 32, the number of the first limiting grooves 34 is preferably three. The two first limiting grooves 34 are respectively located at positions close to the two first gears 31, and the third first limiting groove 34 is close to the other end of the first rotating shaft 32 connected with the adjusting part 33.
The dimming mechanism further includes: a first mounting shell 7. The first mounting case 7 covers the first transmission part 3 and is fixedly disposed on the second housing 12 of the first light-emitting module 1. Specifically, the first mounting case 7 may be fixed to the second housing 12 of the first light emitting module 1 by bolts. As shown in fig. 13, a first boss 71 is provided on the inner surface of the first mounting case 7 at a position corresponding to the first stopper groove 34. It should be understood that the number of the first bosses 71 is equal to the number of the first catching grooves 34. The first boss 71 is fitted into the first stopper groove 34. The first projection 71 is preferably semicircular and has a size matching the size of the first limit groove 34 so that it can be just inserted into the first limit groove 34.
As shown in fig. 12, a second boss 121 is disposed on the second housing 12 of the first light-emitting module 1 at a position corresponding to the first limiting groove 34. It should be understood that the number of the second bosses 121 is equal to the number of the first catching grooves 34. The second bosses 121 are fitted into the first catching grooves 34. The second protrusion 121 is preferably semicircular and has a size matched to the size of the first stopper groove 34 so that it can be just inserted into the first stopper groove 34.
Since the positions of the first bosses 71 and the second bosses 121 are fixed, after the first bosses 71 and the second bosses 121 are respectively embedded into the corresponding first limiting grooves 34, the first rotating shaft 32 can be limited to rotate only around the axial direction of the first rotating shaft 32, and cannot move in other directions. When the first boss 71 and the second boss 121 are both semicircular, the first boss 71 and the second boss 121 can be spliced into a complete circular ring, so that the limitation on the first rotating shaft 32 is facilitated.
Similarly, since the embodiment of the present invention needs to ensure that the second rotating shaft 42 can only rotate around the axial direction of the second rotating shaft 42 and cannot move along the axial direction of the second rotating shaft 42 or perpendicular to the axial direction of the second rotating shaft 42, the second rotating shaft 42 needs to be limited. Specifically, the limit of the second rotating shaft 42 is realized by the following structure:
as shown in fig. 8, the outer surface of one end of the second rotating shaft 42 close to the second gear 41 is provided with a second limiting groove 43, and the outer surface of the other end of the second rotating shaft 42 is provided with a third limiting groove 44.
As shown in fig. 13, the first mounting case 7 covers one end of the second rotating shaft 42 and the second gear 41. A third boss 72 is provided on the inner surface of the first mounting case 7 at a position corresponding to the second stopper groove 43, and the third boss 72 is inserted into the second stopper groove 42. The third projection 72 is preferably semicircular and has a size matching that of the second catching groove 43 so that it can be just inserted into the second catching groove 43.
The dimming mechanism further includes: a second mounting housing 8. The second mounting case 8 covers the other end of the second rotating shaft 42 and is fixedly disposed on the second housing 12 of the first light-emitting module 1. Specifically, the second mounting case 8 may be fixed to the second housing 12 of the first light emitting module 1 by bolts. As shown in fig. 14, a fourth boss 81 is provided on the inner surface of the second mounting case 8 at a position corresponding to the third stopper groove 44. The fourth boss 81 is fitted into the third stopper groove 44. The fourth protrusion 81 is preferably semicircular and has a size matched to the size of the third position-limiting groove 44 so that it can be just inserted into the third position-limiting groove 44.
As shown in fig. 12, a fifth boss 122 is disposed on the second housing 12 of the first light-emitting module 1 at a position corresponding to the second limiting groove 43. The fifth boss 122 is fitted into the second restriction groove 43. A sixth boss 123 is disposed on the second housing 12 of the first light-emitting module 1 at a position corresponding to the third limiting groove 44. The sixth boss 123 is fitted into the third stopper groove 44. The fifth projection 122 is preferably semicircular and has a size matched to the size of the second catching groove 43 so that it can be just inserted into the second catching groove 43. The sixth projection 123 is preferably semicircular and has a size matching that of the third catching groove 44 so that it can be just inserted into the third catching groove 44.
Since the positions of the third boss 72, the fourth boss 81, the fifth boss 122 and the sixth boss 123 are fixed, after the third boss 72, the fourth boss 81, the fifth boss 122 and the sixth boss 123 are respectively embedded into the corresponding limiting grooves, the second rotating shaft 42 can be limited to rotate around the axial direction of the second rotating shaft 42, but cannot move in other directions. When the third boss 72, the fourth boss 81, the fifth boss 122 and the sixth boss 123 are all semicircular, the third boss 72 and the fifth boss 122 can be spliced into a complete circular ring, and the fourth boss 81 and the sixth boss 123 can be spliced into a complete circular ring, so that the second rotating shaft 42 is more favorably limited.
Specifically, as shown in fig. 15, the stopper member 6 includes: a stopper rod 61. The limiting rod 61 is disposed between the first light emitting module 1 and the second light emitting module 2, and is connected to the first light emitting module 1. Specifically, in the present embodiment, the limiting rod 61 is disposed on the first housing 11 of the first light-emitting module 1. The center of the stopper rod 61 is provided with a rotation center. Both ends of the limiting rod 61 extend to the outer side of the second light emitting module 2, and both ends of the limiting rod 61 are provided with first limiting holes 62, respectively. The second light emitting module 2 is provided with a circular limit track 24. The limiting rail 24 is partially located inside the second light emitting module 2, partially located outside the second light emitting module 2, and the limiting rail 24 located outside the second light emitting module 2 is inserted into the first limiting holes 62 at the two ends of the limiting rod 61. The center of the circular stopper rail 24 is located on the central axis of the rotation center. The rotation center includes a second stopper hole 63 provided on the stopper rod 61. The second light emitting module 2 is provided with a limit table 22. Specifically, in the present embodiment, the limiting table 22 is disposed on the first housing 21 of the second light emitting module 2. The size of the limiting table 22 is matched with the size of the second limiting hole 63. The position limiting table 22 is inserted into the second position limiting hole 63 and can freely rotate in the second position limiting hole 63.
Therefore, the above structure limits that the limiting table 22 can only rotate around the central axis of the rotation center in the second limiting hole 63, and the limiting rail 24 penetrates through the first limiting hole 62, and also limits that the second light-emitting module 2 can only rotate around the central axis of the rotation center, thereby limiting the path of the relative movement of the first module 1 and the second module 2; and because the limiting rod 61 is fixed on the first light-emitting module 1, and the circular limiting rail 24 of the second light-emitting module 2 is inserted into the first limiting hole 62, which is equivalent to connecting the first light-emitting module 1 and the second light-emitting module 2 together, the positions of the two are relatively fixed.
Specifically, in a preferred embodiment, the first position-limiting hole 62 can be implemented by the following structure:
the first limiting hole 62 is formed by splicing a first semicircular groove 64 and a second semicircular groove 65. The first semicircular groove 64 is provided at the end of the stopper rod 61. As shown in fig. 16, a projection 641 is provided on an end surface of the first semicircular groove 64. As shown in fig. 17, the end surface of the second semicircular groove 65 is provided with a positioning hole 651. The end face of the first semicircular groove 64 and the end face of the second semicircular groove 65 are opposed. The protrusion 641 is inserted into the positioning hole 651 such that the first semicircular groove 64 and the second semicircular groove 65 are integrally formed.
Since the first semicircular groove 64 and the second semicircular groove 65 which are integrally formed are not fixedly connected, the second semicircular groove 65 is easily detached from the first semicircular groove 64 during use. Therefore, in order to solve the above problem, the limiting module 6 further includes: and a second fixing piece 66 for limiting the position of the second semicircular groove 65, thereby fixing the second semicircular groove 65 with the first semicircular groove 64. Specifically, as shown in fig. 18, the second fixing piece 66 is composed of a second arc-shaped piece 661 and two second strip-shaped pieces 662 arranged in parallel to each other. One end of each of the two second strip-shaped pieces 662 is connected to two ends of the second arc-shaped piece 661. The interval between the two second strip-shaped pieces 662 matches the diameters of the first semicircular groove 64 and the second semicircular groove 65, and the radian of the second arc-shaped piece 661 is the same as that of the second semicircular groove 65, so that the second arc-shaped piece 661 can be sleeved on the outer surface of the second semicircular groove 65, and the inner surface of the second arc-shaped piece 661 is in close contact with the outer surface of the second semicircular groove 65. The other end of the second strip 662 is fixedly connected with one end of the limiting rod 61, so that the second semicircular groove 65 is tightly abutted to the first semicircular groove 64, and the position of the second semicircular groove 65 is limited, so that the second semicircular groove cannot fall off. The other end of the second strip 662 is fixedly connected with one end of the limiting rod 61 by the following specific structure: the surface of the second strip 662 close to the other end is provided with a second clamping hole 663, and the two opposite surfaces of the other end of the limiting rod 61 connected with the second strip 662 are provided with second buckles 67. The second catch 67 is preferably wedge-shaped. The second buckle 67 is clamped in the second clamping hole 663, and the other end of the second strip 662 is fixedly connected with one end of the limiting rod 61. The clamping mode can reduce the occupied space.
Specifically, the transmission part, the first mounting shell 7 and the second mounting shell 8 have dry friction between surfaces, and a PMMA material can be selected. Although the surface of the limiting component 6 is dry friction, the motion intensity is not large and the motion is not frequent compared with the transmission component, so the material of the limiting component 6 is aluminum to reduce the friction force.
Specifically, the motion transmission ratio defined by the transmission component of the dimming mechanism of the embodiment of the invention is as follows:
the first transmission part 3 and the second transmission part 4 are in 1:1 transmission, that is, the first gear 31 rotates one circle, and the second gear 41 also rotates one circle. The thread pitch of the second transmission part 4 is a (e.g. 1mm), the second transmission part 4 rotates one turn, and the third transmission part 5 ascends or descends by a distance a (e.g. 1 mm). The influence of the ascending or descending of the third transmission part 5 on the rotation angle of the second light emitting module 2 is shown in table 1. The effect of the rotation of the second light emitting module 2 is shown in fig. 19 and 20. Wherein, a is a rotation center, B is a motion track of the transmission boss 54, and D is a rotation angle of the second light emitting module 2.
TABLE 1 Angle of rotation of the second light emitting module adjusted by the dimming mechanism
| Number of second gear wheel rotating turns | Distance of movement of the third transmission part | Rotation angle of the second |
| 1 | 1mm | 0.140° |
| 2 | 2mm | 0.526° |
| 3 | 3mm | 1.120° |
| 4 | 4mm | 1.912° |
| 5 | 5mm | 2.845° |
| 6 | 6mm | 3.954° |
| 7 | 7mm | 5.225° |
| 8 | 8mm | 6.664° |
| 9 | 9mm | 8.300° |
| 10 | 10mm | 10.119° |
| Maximum number of turns of second gear | Maximum movement distance of third transmission part | 11.189° |
In summary, the dimming mechanism according to the embodiment of the present invention realizes a transmission manner of rotation-up-down movement-rotation by providing the transmission member, and the transmission manner can more accurately adjust the rotation angle of the second light emitting module 2; the transmission is realized in a combined mode of gear engagement and thread engagement, so that the precision is improved, and the adjustment and control of small-stroke movement are facilitated; in addition, the limiting component 6 can limit the second light-emitting module 2 to rotate only around the central axis of the rotation center and can not move in other directions; and the relative positions of the first and second light emitting modules 1 and 2 are restricted by the stopper 6 so that they are not separated from each other.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A dimming mechanism, comprising: the device comprises a light-emitting part, a transmission part and a limiting part;
the light emitting part comprises a first light emitting module and a second light emitting module; the first light-emitting module and the second light-emitting module are arranged in parallel, and the second light-emitting module is connected with a rotation center on the limiting component;
the transmission component is connected with the light-emitting component and can drive the second light-emitting module to rotate around the rotation center relative to the first light-emitting module;
the limiting component comprises a rotation center, is connected with the first light-emitting module and the second light-emitting module, and limits the central axis of the rotation track of the second light-emitting module to be coincident with the central axis of the rotation center;
wherein the transmission member includes: the first transmission part, the second transmission part and the third transmission part; the first transmission part and the second transmission part are in gear transmission, so that the second transmission part can rotate along with the rotation of the first transmission part; the second transmission part and the third transmission part are in threaded transmission, so that the third transmission part can move up and down along the second transmission part along with the rotation of the second transmission part; the third transmission part and the second light emitting module are in curve transmission through a connecting rod, so that the second light emitting module rotates along with the up-and-down movement of the third transmission part.
2. A dimming mechanism as claimed in claim 1, wherein:
the first transmission unit includes: a first gear and a first rotating shaft; the first gear is arranged at one end of the first rotating shaft and rotates along with the rotation of the first rotating shaft;
the second transmission portion with first transmission portion sets up perpendicularly, includes: the second gear is arranged at one end of the second rotating shaft; the second gear is meshed with the first gear and can drive the second rotating shaft to rotate along with the rotation of the first gear; the outer surface of the second rotating shaft is provided with a first thread;
the third transmission portion includes: one end of the transmission rod is provided with a transmission base, a groove is formed in the transmission base, and a second thread is arranged on the surface of the groove; the second rotating shaft is arranged in the groove, a first thread on the outer surface of the second rotating shaft is meshed with a second thread on the surface of the groove, and the transmission rod can move up and down along the second rotating shaft along with the rotation of the second rotating shaft; the other end of the transmission rod and the second light-emitting module are in curve transmission through the connecting rod.
3. The dimming mechanism of claim 2, wherein the third transmission part further comprises: the first fixing piece is connected with the end face of the transmission base and forms a through hole allowing the second rotating shaft to pass through with a groove in the transmission base, and the first fixing piece abuts against the second rotating shaft in the groove.
4. A dimming mechanism as claimed in claim 2, wherein:
the number of the first gears is two, the first gears are connected with the first rotating shaft, and a space is reserved between the two first gears;
the number of the second transmission parts is two, and the second gears correspond to and are meshed with the first gears one by one;
the number of the grooves is two, and the grooves and the second rotating shafts are arranged in a one-to-one correspondence mode.
5. A dimming mechanism as claimed in claim 2, wherein:
the other end of the transmission rod is provided with a transmission boss, the surface of the second light-emitting module, which is close to the first light-emitting module, is provided with a transmission limiting groove, the transmission boss is embedded into the transmission limiting groove and can move in the transmission limiting groove along with the movement of the transmission rod, and the second light-emitting module rotates along with the movement of the transmission rod.
6. A dimming mechanism as claimed in claim 5, wherein: the transmission limiting groove is a semicircular limiting groove, and the semicircular limiting groove is far away from the second transmission part.
7. The dimming mechanism of claim 2, wherein the first transmission part further comprises: and the adjusting part is connected with the other end of the first rotating shaft and used for adjusting the number of rotating turns of the first rotating shaft.
8. The dimming mechanism according to any one of claims 1 to 7, wherein the stopper member comprises:
the limiting rod is arranged between the first light-emitting module and the second light-emitting module and connected with the first light-emitting module, and the center of the limiting rod is provided with the rotating center; two ends of the limiting rod extend to the outer side of the second light-emitting module respectively, and two ends of the limiting rod are provided with first limiting holes respectively;
the second light-emitting module is provided with a circular limiting track, part of the limiting track is positioned inside the second light-emitting module, part of the limiting track is positioned outside the second light-emitting module, and the limiting track positioned outside the second light-emitting module penetrates through the first limiting holes at the two ends of the limiting rod; the circle center of the circular limiting track is located on the central axis of the rotating center.
9. The dimming mechanism of claim 8, wherein the center of rotation comprises: the second light-emitting module is provided with a limiting table, the size of the limiting table is matched with that of the second limiting hole, and the limiting table is embedded into the second limiting hole and can freely rotate in the second limiting hole.
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| CN201710500928.XA CN109424921B (en) | 2017-06-27 | 2017-06-27 | Light modulation mechanism |
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| JP2007335311A (en) * | 2006-06-16 | 2007-12-27 | Koito Mfg Co Ltd | Lamp for vehicle |
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| CN101725887A (en) * | 2008-10-29 | 2010-06-09 | 艾笛森光电股份有限公司 | Light source device capable of switching different color temperature surfaces |
| TW201128121A (en) * | 2010-02-08 | 2011-08-16 | Hon Hai Prec Ind Co Ltd | Illumination device |
| CN102555886A (en) * | 2010-12-10 | 2012-07-11 | 海洋王照明科技股份有限公司 | Vehicular lamp |
| CN103568931A (en) * | 2012-07-23 | 2014-02-12 | 现代摩比斯株式会社 | Head lamp for vehicle and vehicle comprising the same |
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