Electric chair back small table plate based on planetary gear set

Abstract

The utility model relates to a motor self -locking electric chair back small table board based on planetary gear set, include: install the folding small table board of front row seat backrest backplate, connect four connecting rod folding mechanism of small table board and backrest backplate, drive four connecting rod folding mechanism's drive motor, drive motor is self -locking motor, and self -locking motor is connected with four connecting rod mechanism through planetary gear set, and planetary gear set is used for receiving the driving force of self -locking motor and gradually reduces the speed and enlarges the torque and drives four connecting rod mechanism, and planetary gear set includes: motor sun gear, primary planetary gear, primary planet carrier, primary output sun gear, secondary planetary gear, secondary planet carrier, output gear and internal toothed ring, and the utility model has the advantages that: through the motor is responsible for the conversion of electric energy into mechanical energy, and through the gradually reduced speed primary planetary gear, primary planet carrier, secondary planetary gear, secondary planet carrier realizes the amplification torque, protects self -locking motor, prolongs the service life.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and in particular to a self-locking electric chair back table based on a planetary gear set. Background Technology

[0002] Currently, most in-vehicle seatback tray tables are set to a fixed angle via manual or electric control. However, when adjusting the seat back angle or encountering inclines while driving, the tray table tilts, causing items to slip or cups to tip over. To address this issue, our company has developed a seatback tray table with an adjustable angle, allowing it to automatically adjust its angle along with the front seat. However, this design requires a motor-driven four-bar linkage to fold the tray table, necessitating a high torque output from the motor and resulting in a shorter motor lifespan. Utility Model Content

[0003] In view of the above problems, the purpose of this utility model is to provide a motor-driven self-locking electric chair back table based on a planetary gear set. By adding a planetary gear transmission structure to realize a motor-driven four-bar linkage mechanism, the shortcomings of the above-mentioned prior art are fundamentally overcome.

[0004] This utility model provides a self-locking electric chair back table based on a planetary gear set, comprising: a folding table installed on the backrest of the front seat, a four-bar folding mechanism connecting the table and the backrest, and a drive motor for driving the four-bar folding mechanism. The improvement is that the drive motor is a self-locking motor, which is connected to the four-bar mechanism via a planetary gear set. The planetary gear set receives the driving force of the self-locking motor and gradually reduces the speed to amplify the torque, driving the four-bar mechanism. The planetary gear set includes: a motor sun gear, a first-stage planetary gear, a first-stage planetary carrier, a first-stage output sun gear, a second-stage planetary gear, a second-stage planetary carrier, and an output... The motor comprises an output gear and an internal gear ring. The motor sun gear is press-fitted onto the output shaft of the self-locking motor. Three primary planetary gears are mounted on the primary planetary carrier and mesh with the motor sun gear and the internal gear ring. The primary output sun gear is mounted on the primary planetary carrier and rotates with it. Three secondary planetary gears are mounted on the secondary planetary carrier and mesh with the primary output sun gear and the internal gear ring. The output gear is mounted on the secondary planetary carrier and rotates with it. The output gear is fixedly connected to a four-bar linkage via the output shaft. The self-locking motor is used to self-lock the output shaft when the power is off or the motor stops running, preventing external forces from driving its rotation, thereby maintaining the load position unchanged.

[0005] The beneficial effects of this utility model are as follows:

[0006] 1. This utility model uses an electric motor to convert electrical energy into mechanical energy; and amplifies torque through a series of progressively slower planetary gears, a first-stage planetary carrier, a second-stage planetary gear, and a second-stage planetary carrier, thus protecting the self-locking motor and extending its service life.

[0007] 2. This utility model achieves the control of the small table to be suspended at any position through a self-locking motor. In addition, the self-locking motor is further protected by an electromagnetic brake to prevent the motor from bearing the weight of the small table for a long time, which would cause the motor to malfunction frequently.

[0008] 3. This utility model adopts a self-locking motor in conjunction with a planetary gear transmission method. Compared with helical gear transmission and self-locking, the kinetic energy loss is smaller, and the self-locking of the small table can be achieved. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this embodiment.

[0010] Figure reference numerals: 1. Self-locking motor; 2. Motor sun gear; 3. First-stage planetary gear; 4. First-stage planetary carrier; 5. First-stage output sun gear; 6. Second-stage planetary gear; 7. Second-stage planetary carrier; 8. Output gear; 9. Internal gear ring. Detailed Implementation

[0011] See Figure 1 As shown in this embodiment, a self-locking electric chair back table based on a planetary gear set is provided. It includes: a folding table mounted on the backrest of the front seat; a four-bar linkage connecting the table and the backrest; and a drive motor for driving the four-bar linkage. The drive motor is a self-locking motor 1, which is connected to the four-bar linkage via a planetary gear set. The planetary gear set receives the driving force from the self-locking motor 1 and gradually reduces the speed to amplify the torque, driving the four-bar linkage. The planetary gear set includes: a motor sun gear 2, a first-stage planetary gear 3, a first-stage planetary carrier 4, a first-stage output sun gear 5, a second-stage planetary gear 6, a second-stage planetary carrier 7, an output gear 8, and an internal gear ring 9. The motor sun gear 2 is press-fitted onto the self-locking... On the output shaft of motor 1, three primary planetary gears 3 are mounted on primary planetary carrier 4 and mesh with motor sun gear 2 and internal gear ring 9. The primary output sun gear 5 is mounted on primary planetary carrier 4 and rotates with primary planetary carrier 4. Three secondary planetary gears 6 are mounted on secondary planetary carrier 7 and mesh with primary output sun gear 5 and internal gear ring 9. The output gear 8 is mounted on secondary planetary carrier 7 and rotates with secondary planetary carrier 7. The output gear 8 is fixedly connected to a four-bar linkage through the output shaft. The self-locking motor 1 is used to self-lock the output shaft when the power is off or when it stops running, preventing external force from driving its rotation, thereby keeping the load position unchanged. Among them, motor sun gear 2, primary output sun gear 5, output gear 8, and internal gear ring 9 are coaxial.

[0012] Working principle: The self-locking motor 1 is responsible for converting electrical energy into mechanical energy; the motor sun gear 2 and the first-stage output sun gear 5 are used to transmit torque; the first-stage planetary gear 3, the first-stage planetary carrier 4, the second-stage planetary gear 6, and the second-stage planetary carrier 7 are used to reduce speed and amplify torque; the output gear 8 outputs work to the four-bar linkage mechanism, and the self-locking motor 1 realizes the folding of the small table in a low-power state.

[0013] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A self-locking electric chair back table based on a planetary gear set, comprising: A folding table mounted on the backrest of the front seat, a four-bar folding mechanism connecting the table to the backrest, and a drive motor driving the four-bar folding mechanism are characterized in that the drive motor is a self-locking motor, which is connected to the four-bar mechanism via a planetary gear set. The planetary gear set receives the driving force from the self-locking motor and gradually reduces the speed to amplify the torque, thereby driving the four-bar mechanism. The planetary gear set includes: a motor sun gear, a first-stage planetary gear, a first-stage planetary carrier, a first-stage output sun gear, a second-stage planetary gear, a second-stage planetary carrier, an output gear, and an internal gear ring. The three primary planetary gears are mounted on the output shaft of the self-locking motor and mesh with the primary planetary carrier and the motor sun gear and internal ring gear. The primary output sun gear is mounted on the primary planetary carrier and rotates with it. The three secondary planetary gears are mounted on the secondary planetary carrier and mesh with the primary output sun gear and internal ring gear. The output gear is mounted on the secondary planetary carrier and rotates with it. The output gear is fixedly connected to the four-bar linkage via the output shaft. The self-locking motor is used to self-lock the output shaft when the power is off or when it stops running, preventing external forces from driving its rotation, thereby maintaining the load position unchanged.

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