An electric motor gear box for a vehicle display

Abstract

The utility model provides a motor gear box for vehicle display, including motor, box, output shaft, pivot, the box is assembled from first box subassembly and second box subassembly, and the rotation cooperation between output shaft and box, be provided with mandrel on second box subassembly, and the integrated mould of mandrel and second box subassembly, be provided with central hole on pivot, pivot sleeve is established on mandrel and is rotated with mandrel cooperation, be provided with support recess on first box subassembly, and the one end of mandrel is inserted into support recess, be provided with worm wheel and first gear on pivot, be provided with second gear on output shaft, and first gear is engaged with second gear, and the upper connection of motor has worm. The utility model discloses can realize bigger reduction ratio, has improved output torque greatly, and the whole reduction mechanism only contains two gears, a worm and a worm wheel, and the part quantity is few, is convenient for assembling, and effectively reduces the overall volume of gear box, and the structure is small and exquisite compact, reduces the manufacturing cost of gear box.

Description

Technical Field

[0001] This utility model relates to the field of vehicle display technology, and in particular to a motor gearbox for vehicle displays. Background Technology

[0002] In-vehicle displays are being used more and more widely in some family cars or commercial vehicles. In-vehicle displays allow passengers to watch videos, enhancing their enjoyment of the car ride.

[0003] Existing in-vehicle displays typically consist of a base and a display screen mounted on the base. The base is fixed inside the vehicle, while the display screen can be flipped relative to the base by a drive mechanism. When needed, the display screen flips to the open position, allowing passengers to view the screen. After use, the display screen can be flipped into a storage recess on the base to achieve a stowed state, thus reducing its footprint in the vehicle's interior space.

[0004] Existing display screen flipping drive devices mainly include a motor and a gearbox. The output shaft of the gearbox is connected to the display screen, and the motor drives the output shaft of the gearbox to rotate, thereby causing the display screen to flip.

[0005] In order to achieve a larger reduction ratio, existing gearboxes have a large number of gears, resulting in a large overall size of the gearbox and occupying a large space in the display base, which is not conducive to the miniaturization of automotive displays. Secondly, existing gearboxes have a large number of rotating shaft components, and the shafts usually rely on bearings to maintain rotational engagement with the gearbox. This results in the gearbox requiring a large number of bearings, making assembly more complex and increasing manufacturing costs. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies and provide a motor gearbox for vehicle-mounted displays.

[0007] The purpose of this utility model is achieved through the following technical solution: a motor gearbox for an in-vehicle display, comprising a motor, a housing, an output shaft, and a rotating shaft. The housing is assembled from a first housing assembly and a second housing assembly. The output shaft is rotatably fitted to the housing. A spindle is provided on the second housing assembly, and the spindle is integrally formed with the second housing assembly. A central hole is provided on the rotating shaft, and the rotating shaft is sleeved on the spindle and rotatably fitted to the spindle. A support groove is provided on the first housing assembly, and one end of the spindle extends into the support groove. A worm gear and a first gear are provided on the rotating shaft, and a second gear is provided on the output shaft. The first gear and the second gear mesh. A worm is connected to the upper part of the motor, and the worm meshes with the worm gear.

[0008] Preferably, the first gear is integrally formed with the shaft, and the worm gear is interference-fitted with the shaft.

[0009] Preferably, the second housing assembly is provided with a bearing mounting groove, in which a bearing is provided, and one end of the output shaft is connected to the bearing; the first housing assembly is provided with an output shaft hole, through which the output shaft passes.

[0010] Preferably, a fixing post is provided on the inner side of the first housing assembly, and threaded holes are provided on the fixing post and the first housing assembly. A screw through hole corresponding to the threaded hole is provided on the second housing assembly. The first housing assembly and the second housing assembly are connected by a connecting screw, which passes through the screw through hole on the second housing assembly and is connected to the threaded hole.

[0011] Preferably, the first housing assembly is provided with motor mounting screw holes, and the motor is provided with connection holes corresponding to the motor mounting screw holes. The motor is connected to the first housing assembly by fixing screws, and the fixing screws pass through the motor mounting screw holes and are connected to the connection holes on the motor.

[0012] Preferably, the outer side of the housing is provided with a shock-absorbing sleeve.

[0013] Preferably, the central hole of the rotating shaft is provided with an oil storage groove on its wall, and an oil injection channel is provided in the rotating shaft. The oil injection channel and the oil storage groove are connected by a connecting channel, and one end of the oil injection channel passes through the end face of the rotating shaft.

[0014] The beneficial effects of this utility model are: 1. In this invention, the output power of the motor is first transmitted to the rotating shaft through a worm and a worm wheel, achieving a first-stage reduction. The rotational power of the rotating shaft is then transmitted to the output shaft through a first gear and a second gear, achieving a second-stage reduction. The worm and worm wheel can achieve a large reduction ratio, and combined with the reduction action of the first and second gears, a large reduction ratio can be achieved, significantly increasing the output torque. In this invention, the entire reduction mechanism contains only two gears, one worm, and one worm wheel. The number of parts is small, facilitating assembly and effectively reducing the overall size of the gearbox. The structure is compact and reduces the manufacturing cost of the gearbox.

[0015] 2. In this utility model, the rotating shaft is directly sleeved on the mandrel, and the installation of the rotating shaft does not require the use of bearings. This reduces the use of bearings, improves assembly efficiency, and reduces the overall manufacturing cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the present invention after removing the second housing component.

[0018] Figure 3 This is a structural schematic diagram of the first housing assembly.

[0019] Figure 4 This is a structural schematic diagram of the second housing assembly.

[0020] Figure 5 This is a structural diagram of the assembly of the shaft, worm gear, and first gear.

[0021] Figure 6 This is a schematic diagram of the structure of the rotating shaft and the first gear.

[0022] Figure 7 This is a sectional view of the rotating shaft.

[0023] In the diagram: 1. Motor; 2. First housing assembly; 2a. Output shaft hole; 2b. Support groove; 2c. Motor mounting screw hole; 2d. Fixing post; 2e. Threaded hole; 3. Second housing assembly; 3a. Spindle; 3b. Screw through hole; 3c. Bearing mounting groove; 4. Output shaft; 5. Shock absorber sleeve; 6. Worm gear; 7. Rotating shaft; 7a. Oil filling channel; 7b. Oil storage groove; 7c. Connecting channel; 8. Worm wheel; 9. First gear; 10. Second gear; 11. Bearing; 12. Base; 13. Mounting screw. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0025] like Figures 1 to 7 As shown, a gearbox for a motor 1 used in an in-vehicle display includes a motor 1, a housing, an output shaft 4, and a rotating shaft 7. The housing is assembled from a first housing assembly 2 and a second housing assembly 3. The output shaft 4 is rotatably engaged with the housing. A spindle 3a is provided on the second housing assembly 3, and the spindle 3a is integrally formed with the second housing assembly 3. The rotating shaft 7 is provided with a center hole, and the rotating shaft 7 is sleeved on the spindle 3a and rotatably engaged with the spindle 3a. A support groove 2b is provided on the first housing assembly 2, and one end of the spindle 3a extends into the support groove 2b. A worm gear 8 and a first gear 9 are provided on the rotating shaft 7, and a second gear 10 is provided on the output shaft 4. The first gear 9 and the second gear 10 mesh. A worm 6 is connected to the upper part of the motor 1, and the worm 6 meshes with the worm gear 8.

[0026] In this invention, the output power of the motor 1 is first transmitted to the rotating shaft 7 via the worm 6 and worm wheel 8, achieving a first-stage reduction. The rotational power of the rotating shaft 7 is then transmitted to the output shaft 4 via the first gear 9 and the second gear 10, achieving a second-stage reduction. The worm 6 and worm wheel 8 can achieve a large reduction ratio, and combined with the reduction effect of the first gear 9 and the second gear 10, a large reduction ratio is achieved, significantly increasing the output torque. In this invention, the entire reduction mechanism contains only two gears, one worm 6, and one worm wheel 8, resulting in fewer parts, easier assembly, and a significantly reduced overall gearbox volume. The compact structure reduces the manufacturing cost of the gearbox. In this invention, the rotating shaft 7 is directly mounted on the spindle 3a, eliminating the need for bearings 11 during installation. This reduces the use of bearings 11, improves assembly efficiency, and lowers the overall manufacturing cost. The spindle 3a is integrally formed with the second housing assembly 3, further reducing the number of parts and facilitating gearbox assembly.

[0027] In this invention, the first gear 9 is integrally formed with the rotating shaft 7, and the worm gear 8 is interference-fitted with the rotating shaft 7. This design balances the difficulty of machining while reducing the number of parts, thus improving assembly efficiency.

[0028] The second housing assembly 3 is provided with a bearing mounting groove 3c, in which a bearing 11 is provided, and one end of the output shaft 4 is connected to the bearing 11; the first housing assembly 2 is provided with an output shaft hole 2a, through which the output shaft 4 passes.

[0029] The inner side of the first housing assembly 2 is provided with a fixing post 2d, and the fixing post 2d and the first housing assembly 2 are provided with a threaded hole 2e. The second housing assembly 3 is provided with a screw through hole 3b corresponding to the threaded hole 2e. The first housing assembly 2 and the second housing assembly 3 are connected by a connecting screw. The connecting screw passes through the screw through hole 3b on the second housing assembly 3 and is connected to the threaded hole 2e.

[0030] The first housing assembly 2 has motor mounting screw holes 2c, and the motor 1 has connecting holes corresponding to the motor mounting screw holes 2c. The motor 1 is connected to the first housing assembly 2 by fixing screws, which pass through the motor mounting screw holes 2c and connect to the connecting holes on the motor 1. The connection of the motor 1 to the first housing assembly 2 by fixing screws facilitates the installation and removal of the motor 1.

[0031] A shock-absorbing sleeve 5 is provided on the outer side of the housing. When this utility model is installed on the base 12, the mounting screw 13 passes through the shock-absorbing sleeve 5 and connects to the base 12. The shock-absorbing sleeve 5 can provide a certain degree of shock absorption.

[0032] Furthermore, an oil storage groove 7b is provided on the wall of the central hole of the rotating shaft 7, and an oil injection channel 7a is provided in the rotating shaft 7. The oil injection channel 7a and the oil storage groove 7b are connected by a connecting channel 7c, and one end of the oil injection channel 7a passes through the end face of the rotating shaft 7. Since the rotating shaft 7 is sleeved on the spindle 3a, friction will occur between the rotating shaft 7 and the spindle 3a during rotation, causing wear on both the rotating shaft 7 and the spindle 3a. To reduce the wear on the spindle 3a and the rotating shaft 7, this utility model provides an oil storage groove 7b and an oil injection channel 7a on the rotating shaft 7. Lubricating grease is injected into the oil storage groove 7b through the oil injection channel 7a, so that a certain amount of lubricating grease can be stored in the oil storage groove 7b. The rotating shaft 7 can maintain a lubricated state for a long time during rotation, reducing the wear between the rotating shaft 7 and the spindle 3a.

[0033] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A motor gearbox for an in-vehicle display, characterized in that, The device includes a motor, a housing, an output shaft, and a rotating shaft. The housing is assembled from a first housing assembly and a second housing assembly. The output shaft is rotatably fitted to the housing. A spindle is integrally formed on the second housing assembly. The rotating shaft has a central hole and is fitted onto the spindle, rotatably fitting with it. A support groove is provided on the first housing assembly, and one end of the spindle extends into the support groove. A worm gear and a first gear are provided on the rotating shaft, and a second gear is provided on the output shaft, with the first gear meshing with the second gear. A worm is connected to the upper part of the motor, meshing with the worm gear. The first gear is integrally formed with the rotating shaft, and the worm gear is interference-fitted with the rotating shaft. An oil storage groove is provided on the wall of the central hole of the rotating shaft, and an oil injection channel is provided in the rotating shaft. The oil injection channel and the oil storage groove are connected by a connecting channel, and one end of the oil injection channel passes through the end face of the rotating shaft.

2. The motor gearbox for an in-vehicle display according to claim 1, characterized in that, The second housing assembly is provided with a bearing mounting groove, in which a bearing is installed, and one end of the output shaft is connected to the bearing; the first housing assembly is provided with an output shaft hole, through which the output shaft passes.

3. A motor gearbox for an in-vehicle display according to claim 1, characterized in that, The first housing assembly has a fixing post on its inner side, and the fixing post and the first housing assembly have threaded holes. The second housing assembly has a screw through hole corresponding to the threaded hole. The first housing assembly and the second housing assembly are connected by a connecting screw. The connecting screw passes through the screw through hole on the second housing assembly and is connected to the threaded hole.

4. A motor gearbox for an in-vehicle display according to claim 1, characterized in that, The first housing assembly is provided with motor mounting screw holes, and the motor is provided with connection holes corresponding to the motor mounting screw holes. The motor is connected to the first housing assembly by fixing screws, and the fixing screws pass through the motor mounting screw holes and are connected to the connection holes on the motor.

5. A motor gearbox for an in-vehicle display according to claim 1, characterized in that, The outer side of the housing is equipped with a shock-absorbing sleeve.

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