Vehicle-mounted display overturning driver with reset torque

Abstract

The utility model provides a vehicle-mounted display turnover driver with reset torque, which comprises a shell, a motor and an output shaft, the output shaft is rotatably connected with the shell, and a gear transmission mechanism is arranged between the output shaft and the motor; a torsion piece is arranged between the output shaft and the shell, one end of the torsion piece is connected with the output shaft, the other end of the torsion piece is connected with the shell, the torsion spring exerts reset torque on the output shaft, and the direction of the reset torque is opposite to the direction of gravity torque of the display screen. According to the utility model, the torsion piece is arranged between the output shaft and the shell, the torsion piece applies the reset torque which is opposite to the gravity torque of the display screen to the output shaft, and the reset torque can offset part of the gravity torque of the display screen, so that the driving torque required when the display screen is overturned upwards and reset is reduced; therefore, the requirements for the output torque and the output power of the motor are lowered, the requirements for the performance of the motor are lowered, and the cost of the motor and the overall manufacturing cost of the vehicle-mounted displayer are lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, and particularly relates to an external thread feeding structure for a sewing machine. Background Art

[0002] In some existing commercial vehicles, a vehicle-mounted display is installed on the top inside the vehicle. The vehicle-mounted display usually has a retractable function, that is, when in use, the display screen can be flipped downward for the passengers in the vehicle to view; when not in use, the display screen can be flipped upward to a state almost parallel to the roof plane to reset the display screen, so as to hide the display screen and reduce the occupation of the vehicle interior space.

[0003] Among them, the flipping of the display screen is realized by a driving device arranged in the base of the vehicle-mounted display. The driving device includes a housing, a motor, and an output shaft. The motor and the output shaft are connected by a gear transmission mechanism. The power of the motor is transmitted to the output shaft through the gear transmission mechanism and drives the output shaft to rotate. The output shaft is connected to the display screen, and the rotation of the output shaft drives the display to flip.

[0004] During the actual use of the vehicle-mounted display, when the display is driven by the driving device to flip upward and reset, the motor needs to overcome the gravity torque of the display screen. The load borne by the motor is relatively large, and the motor is required to have a large output torque and output power, which puts higher performance requirements on the motor and is not conducive to the cost control of the vehicle-mounted display; moreover, when the display is driven by the driving device to flip upward and reset, the gravity torque of the display screen will act between the gears in the gear mechanism, resulting in a large load on the gears during operation, which easily accelerates the wear of the gears, increases the clearance between the gears, and causes abnormal noises during the operation of the gears. Summary of the Invention

[0005] The purpose of the utility model is to solve the deficiencies of the prior art and provide a flipping driver for a vehicle-mounted display with a reset torque.

[0006] The purpose of the utility model is realized by the following technical solutions: A flipping driver for a vehicle-mounted display with a reset torque includes a housing, a motor, and an output shaft. The output shaft is rotatably connected to the housing, and a gear transmission mechanism is arranged between the output shaft and the motor;

[0007] A torsion member is arranged between the output shaft and the housing. One end of the torsion member is connected to the output shaft, and the other end of the torsion member is connected to the housing. The torsion spring applies a reset torque to the output shaft, and the direction of this reset torque is opposite to the direction of the gravity torque of the display screen.

[0008] Preferably, the torsion member is a torsion spring. The torsion spring is sleeved on the output shaft. One end of the torsion spring is connected to the housing, and the other end of the torsion spring is connected to the output shaft.

[0009] Preferably, a first connection groove is provided on the outer shell, and a second connection groove is provided on the output shaft. One end of the torsion spring is snapped into the first connection groove, and the other end of the torsion spring is snapped into the second connection groove.

[0010] Preferably, the gear transmission mechanism includes a worm provided on the motor, a worm gear provided in the outer shell and cooperating with the worm, and a final gear provided on the output shaft. A plurality of intermediate transmission gears are sequentially connected between the worm gear and the final gear.

[0011] Preferably, a shock-absorbing mounting bracket is provided on the outer shell, and the motor is provided on the shock-absorbing mounting bracket.

[0012] Preferably, the shock-absorbing mounting bracket includes a bottom plate, and the bottom plate is connected to the outer shell by a first connecting screw; the motor is connected to the bottom plate by a second connecting screw; a shock-absorbing pad is provided between the bottom plate and the outer shell.

[0013] Preferably, a connecting column is provided on the outer side of the outer shell, and a threaded hole is provided on the connecting column; a first connecting hole corresponding to the connecting column is provided on the bottom plate. The shock-absorbing pad is annular, the shock-absorbing pad is snap-fitted into the first connecting hole, the shock-absorbing pad is sleeved on the connecting column, and the first connecting screw passes through the shock-absorbing pad and is connected to the threaded hole on the connecting column.

[0014] Preferably, the worm gear is provided on a rotating shaft, and a silica gel shaft sleeve is provided between one end of the rotating shaft and the outer shell; a shaft hole corresponding to the rotating shaft is provided on the bottom plate, and the other end of the rotating shaft is rotationally matched with the shaft hole.

[0015] Preferably, the bottom plate is in an "L" shape.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. In the present utility model, a torsion member is provided between the output shaft and the outer shell, and the torsion member applies a reset torque to the output shaft in a direction opposite to the gravity torque of the display screen. This reset torque can offset part of the gravity torque of the display screen, reduce the driving torque required for the display screen to flip upward and reset, thereby reducing the requirements for the output torque and output power of the motor, further reducing the requirements for the performance of the motor, and thus reducing the cost of the motor and the overall manufacturing cost of the in-vehicle display.

[0018] 2. By offsetting part of the gravity torque of the display screen through the reset torque, the load borne by the gear transmission mechanism can be reduced, thereby reducing the wear between the gears and reducing the abnormal noise generated during the operation of the gears. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the present utility model.

[0020] Figure 2This is a schematic structural view of the present utility model after removing the second housing assembly.

[0021] Figure 3 This is a schematic structural view of the housing.

[0022] Figure 4 This is a schematic view when the motor is installed on the shock-absorbing mounting bracket.

[0023] Figure 5 This is a schematic structural view of the bottom plate.

[0024] Figure 6 This is a schematic structural view of the shock pad.

[0025] In the figure: 1. Outer shell, 1-1. First outer shell assembly, 1-1a. First connection groove, 1-1b. Connection column, 1-1c. Threaded hole, 1-1d. Through hole, 1-2. Second outer shell assembly, 2. Motor, 3. Output shaft, 3-1. Second connection groove, 4. Torsion spring, 5. Bottom plate, 5-1. First connection hole, 5-2. Shaft hole, 5-3. Second connection hole, 6. Shock pad, 6-1. Annular groove, 7. First connection screw, 8. Worm, 9. Worm gear, 10. Final stage gear, 11. Intermediate transmission gear, 12. Silicone bushing, 13. Rotating shaft, 14. Second connection screw. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the protection scope of the present utility model.

[0027] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present utility model.

[0028] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one element can be one, and in other embodiments, the number of the element can be multiple. The term "one" should not be construed as limiting the quantity.

[0029] Such as Figures 1-6As shown in the figure, a vehicle-mounted display flipping driver with a reset torque includes a housing 1, a motor 2, and an output shaft 3. The output shaft 3 is rotatably connected to the housing, and a gear transmission mechanism is provided between the output shaft 3 and the motor 2;

[0030] A torsion member is provided between the output shaft 3 and the housing 1. One end of the torsion member is connected to the output shaft 3, and the other end of the torsion member is connected to the housing. A torsion spring 4 applies a reset torque to the output shaft 3, and the direction of this reset torque is opposite to the direction of the gravity torque of the display screen.

[0031] In the present utility model, a torsion member is provided between the output shaft 3 and the housing 1. The torsion member applies a reset torque to the output shaft 3 that is opposite to the direction of the gravity torque of the display screen. This reset torque can offset part of the gravity torque of the display screen, reducing the driving torque required for the display screen to flip upward and reset. As a result, the requirements for the output torque and output power of the motor 2 are reduced, thereby reducing the requirements for the performance of the motor 2, and thus reducing the cost of the motor 2 and the overall manufacturing cost of the vehicle-mounted display. Moreover, by offsetting part of the gravity torque of the display screen with the reset torque, the load borne by the gear transmission mechanism can be reduced, thereby reducing the wear between the gears and the abnormal noise generated during the operation of the gears.

[0032] Among them, the torsion member is a torsion spring 4. The torsion spring 4 is sleeved on the output shaft 3. One end of the torsion spring 4 is connected to the housing, and the other end of the torsion spring 4 is connected to the output shaft 3. A first connection groove 1-1a is provided on the housing, and a second connection groove 3-1 is provided on the output shaft 3. One end of the torsion spring 4 is snapped into the first connection groove 1-1a, and the other end of the torsion spring 4 is snapped into the second connection groove 3-1.

[0033] The housing 1 is a split structure. The housing 1 is composed of a first housing component 1-1 and a second housing component 1-2, and the first housing component 1-1 and the second housing component 1-2 are connected by bolts.

[0034] The gear transmission mechanism includes a worm 8 provided on the motor 2, a worm gear 9 provided in the housing and meshing with the worm 8, and a final gear 10 provided on the output shaft 3. There are several intermediate transmission gears 11 connected in sequence between the worm gear 9 and the final gear 10. By driving the worm 8 to rotate by the motor 2, the worm 8 drives the worm gear 9 to rotate. When the worm gear 9 rotates, it drives the final gear 10 to rotate under the transmission of the intermediate transmission gears 11, thereby driving the output shaft 3 to rotate. Among them, the worm gear 9, the final gear 10, and the intermediate transmission gears 11 are all provided in the housing.

[0035] The housing 1 is provided with a shock-absorbing mounting bracket, and the motor 2 is arranged on the shock-absorbing mounting bracket. In the traditional structure, the motor 2 is directly fixedly mounted on the housing. Since the motor 2 generates vibrations during operation, this direct fixed mounting method will directly transmit the vibrations of the motor 2 to the housing, thereby exacerbating the vibrations of the housing and the internal gear transmission mechanism. The vibrations will cause the contact between the gears in the internal gear transmission mechanism to become unstable, increase the friction between the tooth surfaces, thereby accelerating the wear rate of the gear surfaces and reducing the service life of the gears. In the present utility model, by providing a shock-absorbing mounting bracket on the housing and mounting the motor 2 on the shock-absorbing mounting bracket, part of the vibrations generated by the motor 2 can be isolated, thereby reducing the jitter of the housing and the internal gear transmission mechanism, ensuring the normal operation of the gear transmission mechanism, and reducing the impact on the gear transmission mechanism caused by the vibrations of the motor 2.

[0036] Specifically, the shock-absorbing mounting bracket includes a bottom plate 5, and the bottom plate 5 is connected to the housing through a first connecting screw 7; the motor 2 is connected to the bottom plate 5 through a second connecting screw 14; a shock-absorbing pad 6 is provided between the bottom plate 5 and the housing. The shock-absorbing pad 6 enables the bottom plate 5 to have a certain degree of floating relative to the housing. In this embodiment, the shock-absorbing pad 6 is made of silica gel. The bottom plate 5 is in an "L" shape.

[0037] Among them, a connecting column 1-1b is provided on the outer side of the housing 1, and a threaded hole 1-1c is provided on the connecting column 1-1b; a first connecting hole 5-1 corresponding to the connecting column 1-1b is provided on the bottom plate 5. The shock-absorbing pad 6 is in a ring shape, and the shock-absorbing pad 6 is snap-fitted in the first connecting hole 5-1. The shock-absorbing pad 6 is sleeved on the connecting column 1-1b, and the first connecting screw 7 passes through the shock-absorbing pad 6 and is connected to the threaded hole 1-1c on the connecting column 1-1b.

[0038] Among them, an annular groove 6-1 is provided on the outer side of the shock-absorbing pad 6, and the edge of the first connecting hole 5-1 is snapped into the annular groove 6-1 on the shock-absorbing pad 6. A second connecting hole 5-3 is provided on the bottom plate 5, and the second connecting screw 14 passes through the second connecting hole 5-3 and is connected to the motor 2.

[0039] The worm wheel 9 is arranged on the rotating shaft 13. A silica gel shaft sleeve 12 is provided between one end of the rotating shaft 13 and the housing; a shaft hole 5-2 corresponding to the rotating shaft 13 is provided on the bottom plate 5, and the other end of the rotating shaft 13 is rotationally matched with the shaft hole 5-2. A through hole 1-1d through which the rotating shaft 13 can pass is provided on the housing. The silica gel shaft sleeve 12 realizes the rotational connection between one end of the rotating shaft 13 and the housing, and the silica gel shaft sleeve 12 enables one end of the rotating shaft 13 to have a certain degree of floating; the other end of the rotating shaft 13 is matched with the shaft hole 5-2 on the bottom plate 5, and the other end of the rotating shaft 13 and the motor 2 both float synchronously with the bottom plate 5.

[0040] The present utility model is not limited to the above-mentioned optimal implementation mode. Any person can obtain other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in its shape or structure, as long as it has a technical solution identical or similar to the present application, it falls within the protection scope of the present utility model.

Claims

1. A vehicle display flip driver with reset torque, characterized in that: It includes a housing, a motor, and an output shaft, wherein the output shaft is rotatably connected to the housing, and a gear transmission mechanism is provided between the output shaft and the motor; A torsion piece is provided between the output shaft and the housing, one end of the torsion piece is connected to the output shaft, and the other end of the torsion piece is connected to the housing. The torsion spring applies a reset torque to the output shaft, and the direction of the reset torque is opposite to the gravity torque of the display screen.

2. The vehicle-mounted display flip driver with reset torque according to claim 1, characterized in that: The torsion member is a torsion spring, which is sleeved on the output shaft, one end of the torsion spring is connected to the housing, and the other end of the torsion spring is connected to the output shaft.

3. The vehicle-mounted display flip driver with reset torque according to claim 2, characterized in that: The housing is provided with a first connecting groove, the output shaft is provided with a second connecting groove, one end of the torsion spring is clamped into the first connecting groove, and the other end of the torsion spring is clamped into the second connecting groove.

4. The vehicle-mounted display flip driver with reset torque according to claim 1, characterized in that: The gear transmission mechanism comprises a worm arranged on the motor, a worm wheel arranged in the housing and matched with the worm, and a final gear arranged on the output shaft. A plurality of intermediate transmission gears connected in sequence are arranged between the worm wheel and the final gear.

5. The vehicle-mounted display flip driver with reset torque according to claim 4, characterized in that: The shell is provided with a shock-absorbing mounting bracket, and the motor is arranged on the shock-absorbing mounting bracket.

6. The vehicle-mounted display flip driver with reset torque according to claim 5, characterized in that: The shock-absorbing mounting bracket comprises a bottom plate, which is connected to the outer shell via a first connecting screw; the motor is connected to the bottom plate via a second connecting screw; and a shock-absorbing pad is arranged between the bottom plate and the outer shell.

7. The vehicle-mounted display flip driver with reset torque according to claim 6, characterized in that: A connecting column is provided on the outer side of the shell, and a threaded hole is provided on the connecting column; a first connecting hole corresponding to the connecting column is provided on the bottom plate, the shock-absorbing pad is annular, the shock-absorbing pad is clamped in the first connecting hole, the shock-absorbing pad is sleeved on the connecting column, and the first connecting screw passes through the shock-absorbing pad and is connected to the threaded hole on the connecting column.

8. The vehicle-mounted display flip driver with reset torque according to claim 6, characterized in that: The worm gear is arranged on the rotating shaft, and a silicone sleeve is arranged between one end of the rotating shaft and the shell; an axis hole corresponding to the rotating shaft is arranged on the bottom plate, and the other end of the rotating shaft is rotatably matched with the axis hole.

9. The vehicle-mounted display flip driver with reset torque according to claim 6, characterized in that: The bottom plate is in an "L" shape.

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