Drive device and color wheel device

Abstract

The application relates to the technical field of color wheel, and provides a driving device, which comprises a shell, a motor and a heat-conducting element. The shell comprises a shell body and a mounting plate. The shell body forms a mounting space, and the mounting plate is mounted on the shell body and seals the mounting space. The motor is arranged in the mounting space. The motor comprises a connecting piece and a copper ring. The connecting piece is fixed to the mounting plate. The heat-conducting element is arranged between the copper ring and the mounting plate. By arranging the heat-conducting element, the heat-conducting element fills the gap between the motor and the mounting plate, the heat conductivity is improved, the heat generated by the motor during operation can be quickly transmitted to the mounting plate, and then is dissipated outward through the mounting plate, so that the heat accumulation is avoided, the working efficiency of the motor is affected, and the motor can be guaranteed to maintain a stable and good working state. In addition, the application further provides a color wheel device.

Description

Technical Field

[0001] This application relates to the field of color wheel technology, specifically to a driving device and a color wheel device. Background Technology

[0002] The color wheel module is a core component of laser phosphor technology, and the motor within it is crucial for stable operation. Temperature significantly impacts the motor's stability. When the motor operates at high speed under load, it accumulates heat rapidly. If this heat cannot be effectively dissipated, the motor's operating temperature can easily exceed specifications, leading to reduced efficiency or even failure. Therefore, ensuring the motor operates within its temperature specifications is critical. However, with the emergence of demands for smaller size and higher heat dissipation, the current primary method is to turbulent the air to accelerate airflow, allowing hot air to exchange heat with the casing. This method is insufficient to meet the higher heat dissipation requirements, necessitating a more efficient cooling approach. Utility Model Content

[0003] This application provides a driving device and a color wheel device to at least partially improve the above-mentioned technical problems.

[0004] The embodiments of this application are implemented through the following technical solutions.

[0005] In a first aspect, embodiments of this application provide a driving device, including a housing, a motor, and a heat-conducting element. The housing includes a shell and a mounting plate, the shell forming an installation space, the mounting plate being mounted on the shell and enclosing the installation space, the motor being disposed within the installation space, the motor including a connector and a copper ring, the connector being fixed to the mounting plate, and the heat-conducting element being disposed between the copper ring and the mounting plate.

[0006] In some embodiments, a first recessed platform is provided on the surface of the mounting plate facing the mounting space, and the heat-conducting element is disposed between the copper ring and the first recessed platform, and abuts against the copper ring and the first recessed platform.

[0007] In some embodiments, the heat-conducting element is a heat-conducting pad, the heat-conducting pad is annular, the first recess has a through hole, the output shaft of the motor passes through the through hole, and the heat-conducting pad is arranged around the output shaft.

[0008] In some embodiments, the surface of the mounting plate facing the mounting space is further provided with a second recessed platform, the first recessed platform being located within the second recessed platform, and the driving device further includes a first sealing ring, the first sealing ring abutting between the flange and the second recessed platform.

[0009] In some embodiments, the connector is a flange, the mounting plate has a plurality of first connection holes, the flange has a second connection hole that mates with the first connection holes, and the driving device further includes a plurality of screws, each screw passing through one of the first connection holes and one of the second connection holes, the plurality of screws being disposed on the outside of the first sealing ring.

[0010] In some embodiments, the motor is provided with a ribbon cable, and the surface of the mounting plate facing the mounting space is also provided with a cable groove, the ribbon cable being embedded in the cable groove and leading out of the mounting space.

[0011] In some embodiments, the drive device further includes a sealing gasket affixed to the surface of the mounting plate facing the mounting space and pressing against the ribbon cable.

[0012] In some embodiments, the drive device further includes a second sealing ring disposed at the connection between the housing and the mounting plate, the second sealing ring pressing against the ribbon cable.

[0013] In some embodiments, the housing is provided with a sealing groove, and the second sealing ring is embedded in the sealing groove and at least partially extends out of the sealing groove.

[0014] Secondly, embodiments of this application also provide a color wheel device, including a color wheel and the aforementioned driving device, wherein the output shaft of the driving device is connected to the color wheel and is used to drive the color wheel to rotate.

[0015] The driving device provided in this application embodiment, by setting a heat-conducting element between the copper ring and the mounting plate to fill the gap between the motor and the mounting plate, improves thermal conductivity. This allows for rapid transfer of heat generated by the motor during operation to the mounting plate, which then dissipates the heat outwards, preventing heat buildup in the motor and ensuring its efficiency. This ensures that the motor's speed always matches the set speed, maintaining a stable and efficient operating state. The color wheel device with the above-mentioned driving device can achieve long-term, continuous, and stable operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a driving device provided in an embodiment of this application.

[0018] Figure 2 This is a three-dimensional structural diagram of a driving device provided in an embodiment of this application.

[0019] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure along line AA in the middle.

[0020] Figure 4 This is a schematic diagram of the structure of a mounting plate in a driving device provided in an embodiment of this application.

[0021] Figure 5 This is a cross-sectional structural diagram of a mounting plate in a driving device provided in an embodiment of this application.

[0022] Figure 6 This is a schematic diagram of the structure of a motor in a drive device provided in an embodiment of this application.

[0023] Figure 7 yes Figure 1 A schematic diagram of the cross-sectional structure along line BB. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] In related technologies, the heat dissipation of the motor in the color wheel device is mainly achieved by directly attaching the motor flange to the metal housing and by accelerating and disturbing the airflow around the motor to conduct heat away. However, even if the flatness and roughness of the metal housing are well done, it is impossible to completely eliminate the air gap between the motor flange and the metal housing. The thermal conductivity of air is as low as 0.026W / mK, resulting in low heat conduction efficiency. This leads to heat accumulation, which affects the operation of the motor.

[0026] Please refer to the following: Figure 1 and Figure 2 This embodiment provides a driving device 10, including a housing 20, a motor 50, and a heat-conducting element 60. The motor 50 and the heat-conducting element 60 are both disposed inside the housing 20. The motor 50 is used to output power to the outside, and the heat-conducting element 60 is used to quickly conduct the heat generated by the motor 50 to the housing 20.

[0027] Please refer to the following: Figure 2 and Figure 3 The outer casing 20 includes a housing 30 and a mounting plate 40. The housing 30 forms an installation space 21. Specifically, the housing 30 includes a structural plate 31 and a side plate 32. The structural plate 31 is a generally plate-shaped structure, and its shape can be configured in any form; this embodiment does not limit this. The side plate 32 is an annular structure, connected to the edge of the structural plate 31 to form the installation space 21. The side of the side plate 32 away from the structural plate 31 is open. The side plate 32 and the structural plate 31 can be integrally formed, which facilitates improved sealing of the housing 30. Of course, in other embodiments, the side plate 32 and the structural plate 31 can also be connected by screwing, riveting, welding, etc.; this embodiment does not limit this.

[0028] The mounting plate 40 is installed on the housing 30 and encloses the installation space 21. Specifically, in this embodiment, the mounting plate 40 is installed on the side of the side plate 32 away from the structural plate 31, thereby enclosing the installation space 21. In this embodiment, the side of the side plate 32 away from the structural plate 31 is provided with a plurality of first fixing holes 22, and the mounting plate 40 is provided with a plurality of second fixing holes 45 that cooperate with the first fixing holes 22. The number of second fixing holes 45 is the same as the number of first fixing holes 22, and the plurality of second fixing holes 45 are provided in a one-to-one correspondence with the plurality of first fixing holes 22. The driving device 10 also includes screws 92, which are used to connect the mounting plate 40 and the housing 30 by passing through one first fixing hole 22 and one second fixing hole 45. Specifically, in this embodiment, a total of four first fixing holes 22 are provided at the four corners of the side plate 32, and four second fixing holes 45 are provided on the mounting plate 40. The connection and fixation between the mounting plate 40 and the housing 30 are achieved by four screws 92. It is understood that in other embodiments, the location and number of the first fixing hole 22 and the second fixing hole 45 may be in other forms, and this embodiment does not limit this.

[0029] Please refer to the following: Figure 4 and Figure 5 A first recessed platform 41 is provided on the surface of the mounting plate 40 facing the mounting space 21. The first recessed platform 41 has a through hole 43 that penetrates the mounting plate 40 and allows the output shaft 52 of the power supply 50 to extend out. The through hole 43 is approximately located in the middle of the first recessed platform 41. Depending on the specific requirements, in order to dissipate heat as quickly as possible, both the mounting plate 40 and the housing 30 can be made of materials with high thermal conductivity, such as metal materials like steel, iron, aluminum, copper, or their alloys. This embodiment does not limit this.

[0030] Please combine them together Figure 3 and Figure 6The motor 50 is disposed within the installation space 21. The motor 50 includes a connector 54 and a copper ring 51. The connector 54 is sleeved on the shaft of the motor 50, and the copper ring 51 is disposed in front of the connector 54. The connector 54 is fixed to the mounting plate 40. Specifically, in this embodiment, the connector 54 is a flange 55. In some other embodiments, the connector 54 may be other structures, which are not limited in this embodiment.

[0031] The mounting plate 40 has multiple first connection holes 46, and the flange 55 has second connection holes 56 that mate with the first connection holes 46. The drive device 10 also includes multiple screws 91, each screw 91 passing through one first connection hole 46 and one second connection hole 56, thereby connecting the flange 55 and the mounting plate 40 and fixing the motor 50 to the mounting plate 40. When the motor 50 is fixed to the mounting plate 40, the output shaft 52 of the motor 50 passes through the through hole 43, and the output shaft 52 is used to output power outward.

[0032] A heat-conducting element 60 is disposed between the copper ring 51 and the first recessed platform 41, and abuts against the copper ring 51 and the first recessed platform 41. Specifically, in this embodiment, the heat-conducting element 60 is a heat-conducting pad. In some other embodiments, the heat-conducting element 60 may also be configured with other structures, which are not limited in this embodiment.

[0033] In this embodiment, the thermal pad has a ring-shaped structure, and the ring-shaped thermal conductive element 60 is arranged around the output shaft 52. The ring-shaped thermal conductive element 60 facilitates assembly. The thermal conductive element 60 is attached to the surface of the copper ring 51 facing the mounting plate 40. During assembly, the thermal conductive element 60 is embedded in the first recess 41 and abuts against the space between the first recess 41 and the copper ring 51, thereby filling the gap between the copper ring 51 and the mounting plate 40 and achieving good heat transfer. Preferably, the thermal conductive element 60 can have a certain amount of compression when embedded between the first recess 41 and the copper ring 51. This arrangement can further expel the air between the first recess 41 and the copper ring 51, improving heat transfer efficiency.

[0034] The size of the heat-conducting element 60 can match the size of the copper ring 51. For example, the width of the heat-conducting element 60 is the same as the width of the copper ring 51. When set up, the heat-conducting element 60 completely covers the copper ring 51. The copper ring 51 can conduct heat, so that the heat of the copper ring 51 can be quickly transferred to the heat-conducting element 60 and then transferred to the mounting plate 40.

[0035] The heat-conducting element 60 can be made of a material with high thermal conductivity, such as copper, aluminum, or thermally conductive silicone. This embodiment does not limit this. In other embodiments, the heat-conducting element 60 can also be a non-integral structure, for example, it can be composed of multiple separate parts. This embodiment does not limit this.

[0036] In this embodiment, by setting a heat-conducting element 60, which abuts between the copper ring 51 and the mounting plate 40, and filling the gap between the motor 50 and the mounting plate 40, the thermal conductivity is improved. The heat generated by the motor 50 during operation can be quickly transferred to the mounting plate 40, and then dissipated outward through the mounting plate 40, exchanging heat with the air outside the mounting plate. This avoids the accumulation of heat in the motor 50, which would affect the working efficiency of the motor 50. This ensures that the speed of the motor 50 during operation can always match the set speed, maintaining a stable and good working state.

[0037] In related technologies, the interior and exterior of the motor 50 cavity are not sealed, which causes the heat dissipated to flow back into the cavity through the air, accelerating the accumulation of heat inside the cavity. To avoid the above-mentioned defects, in this embodiment, please refer again to... Figure 4 and Figure 5 The surface of the mounting plate 40 facing the mounting space 21 is also provided with a second recessed platform 42. The first recessed platform 41 is located inside the second recessed platform 42. That is, the size of the second recessed platform 42 is larger than that of the first recessed platform 41. At the same time, the depth of the first recessed platform 41 is deeper than that of the second recessed platform 42, forming a two-step structure.

[0038] Please refer to it again. Figure 3 The drive device 10 also includes a first sealing ring 70, which is a generally annular structure and abuts against the flange 55 and the second countersunk plate 42. The first sealing ring 70 seals the gap between the flange 55 and the mounting plate 40, preventing heat dissipated outward from flowing back into the mounting space 21 through the through hole 43. The first sealing ring 70 can be made of materials such as silicone or rubber. Preferably, the first sealing ring 70 can be made of a material with low thermal conductivity, such as rubber, so that heat dissipated outward is not easily conducted back into the mounting space 21 through the first sealing ring 70. In this embodiment, multiple screws used to connect the mounting plate 40 and the flange 55 are wrapped around the outside of the first sealing ring 70. The advantage of this arrangement is that the screws can provide a certain limiting effect on the first sealing ring 70, preventing misalignment or movement of the first sealing ring 70 during assembly, ensuring accurate assembly position, improving the sealing performance within the mounting space 21, and preventing heat backflow.

[0039] Furthermore, please refer again. Figure 3 The drive unit 10 also includes a second sealing ring 80, which is a generally annular structure. The second sealing ring 80 is disposed at the connection between the housing 30 and the mounting plate 40, and abuts against the side plate 32 of the housing 30 and the mounting plate 40. Together with the first sealing ring 70, it allows for a good seal between the mounting space 21 and the outside. Preferably, the second sealing ring 80 can be made of a material with low thermal conductivity, such as rubber, so that heat dissipated outwards is less likely to be reconducted into the mounting space 21 through the second sealing ring 80.

[0040] In this embodiment, to facilitate the installation of the second sealing ring 80, the housing 30 is provided with a sealing groove. Specifically, the sealing groove is provided on the surface of the side plate 32 facing the mounting plate 40. The second sealing ring 80 is embedded in the sealing groove and at least partially extends out of the sealing groove. The portion extending out of the sealing groove can abut against the mounting plate 40 to form a seal. In other embodiments, the sealing groove can also be provided on the surface of the mounting plate 40 facing the mounting space 21. Alternatively, both the surface of the mounting plate 40 facing the mounting space 21 and the surface of the side plate 32 facing the mounting plate 40 are provided with sealing grooves, which cooperate with each other. The second sealing ring 80 can be simultaneously embedded in the mounting groove on the surface of the mounting plate 40 facing the mounting space 21 and the sealing groove on the surface of the side plate 32 facing the mounting plate 40, thus achieving a better sealing effect.

[0041] See Figure 7 The motor 50 is also equipped with a ribbon cable 53, which connects to the motor 50 and is used to connect to an external power supply or PCBA (main board). The ribbon cable 53 needs to be led out of the housing. In this embodiment, the surface of the mounting plate 40 facing the mounting space 21 is also provided with a wire groove 44, which can extend to the outside of the housing 30. The ribbon cable 53 is embedded in the wire groove 44 and led out of the mounting space 21. This arrangement facilitates wiring and ensures the airtightness of the entire housing 20 by sealing the wire groove 44.

[0042] Specifically, in this embodiment, to ensure the sealing of the corresponding positions of the wire groove 44 and the housing 30, the second sealing ring 80 presses against the ribbon cable 53 to form a seal. Utilizing the deformable properties of the second sealing ring 80, it fills the space within the wire groove 44 not occupied by the ribbon cable 53, thereby improving the sealing performance.

[0043] To further improve the sealing performance caused by the wire groove 44, the drive device 10 may also include a sealing gasket 90. The sealing gasket 90 is affixed to the surface of the mounting plate 40 facing the mounting space 21. The sealing gasket 90 may be disposed adjacent to the wire groove 44, and the sealing gasket 90 presses against the ribbon cable 53, causing the ribbon cable 53 to run tightly against the wire groove 44, thereby further improving the sealing effect. Specifically, in this embodiment, the sealing gasket 90 abuts against the inner wall of the side shell and is affixed to the surface of the mounting plate 40 facing the mounting space 21, and the sealing gasket 90 is located in the area of ​​the mounting plate 40 where the wire groove 44 is disposed. The sealing gasket 90 may be formed of a flexible material, such as rubber. When the sealing gasket 90 presses against the ribbon cable 53, the deformable properties of the sealing gasket 90 can fill the space in the wire groove 44 not occupied by the ribbon cable 53 and the gaps in the ribbon cable 53 itself, thereby further improving the sealing performance.

[0044] By setting the first sealing ring 70, the second sealing ring 80, and the sealing gasket 90, the installation space 21 is isolated from the outside, blocking the path of heat that is conducted outward back into the installation space 21, avoiding ineffective heat loss, and further improving the heat dissipation effect of the motor 50.

[0045] This embodiment also provides a color wheel device (not shown), including a color wheel (not shown) and the aforementioned driving device 10. The color wheel may have multiple sections, and different sections may be filled with different colors of phosphor or may not be filled with phosphor. The output shaft 52 of the driving device 10 is connected to the color wheel and is used to drive the color wheel to rotate. During the rotation of the color wheel, when excitation light shines on different sections, different colors of light can be formed.

[0046] The color wheel device provided in this embodiment can be used directly for lighting, or applied to projection devices, or applied to vehicle lighting devices, etc. This embodiment does not limit it in this regard.

[0047] It should be noted that in this embodiment, the terms "first" and "second" are used only for distinction and are not used to emphasize their order or importance.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A driving device, characterized in that, include: The housing includes a shell and a mounting plate, the shell forming an installation space, and the mounting plate being mounted on the shell and enclosing the installation space; A motor, disposed within the mounting space, includes a connector and a copper ring; the connector is fixed to the mounting plate. A heat-conducting element is disposed between the copper ring and the mounting plate.

2. The driving device according to claim 1, characterized in that, The mounting plate has a first recessed platform on its surface facing the mounting space. The heat-conducting element is disposed between the copper ring and the first recessed platform and abuts against the copper ring and the first recessed platform.

3. The driving device according to claim 2, characterized in that, The heat-conducting element is a heat-conducting pad, which is annular. The first recess has a through hole, through which the output shaft of the motor passes, and the heat-conducting pad is arranged around the output shaft.

4. The driving device according to claim 3, characterized in that, The connector is a flange, and the surface of the mounting plate facing the mounting space is also provided with a second recessed platform. The first recessed platform is located inside the second recessed platform. The driving device also includes a first sealing ring, which abuts against the flange and the second recessed platform.

5. The driving device according to claim 4, characterized in that, The mounting plate has multiple first connection holes, the flange has a second connection hole that mates with the first connection holes, and the drive device also includes multiple screws, each screw passing through one of the first connection holes and one of the second connection holes, and the multiple screws are located on the outside of the first sealing ring.

6. The driving device according to claim 1, characterized in that, The motor is provided with a ribbon cable, and the surface of the mounting plate facing the mounting space is also provided with a wire groove, the ribbon cable being embedded in the wire groove and leading out of the mounting space.

7. The driving device according to claim 6, characterized in that, The drive device also includes a sealing gasket, which is affixed to the surface of the mounting plate facing the mounting space and presses against the ribbon cable.

8. The driving device according to claim 6, characterized in that, The drive device further includes a second sealing ring, which is disposed at the connection between the housing and the mounting plate, and presses against the ribbon cable.

9. The driving device according to claim 8, characterized in that, The housing is provided with a sealing groove, and the second sealing ring is embedded in the sealing groove and extends at least partially out of the sealing groove.

10. A color wheel device, characterized in that, It includes a color wheel and a driving device as described in any one of claims 1-9, the driving device being connected to the color wheel and used to drive the color wheel to rotate.

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