Bidirectional telescopic stepper motor

Abstract

This application relates to a bidirectional telescopic stepper motor, comprising a dual-output-shaft stepper motor and telescopic mechanisms disposed on both output ends of the dual-output-shaft stepper motor. The telescopic mechanisms include a gearbox, a lead screw, a lead screw nut, a guide sleeve, and a telescopic rod. The gearbox is fixed outside the output end of the dual-output-shaft stepper motor. The lead screw is coaxially arranged with the output shaft of the dual-output-shaft stepper motor, with one end connected to the output shaft. The lead screw nut is threadedly connected to the lead screw. The guide sleeve is sleeved outside the lead screw nut and fixed to it. The telescopic rod is coaxially arranged with the lead screw, with one end fixed to the lead screw nut and the other end extending outside the gearbox. This utility model, by setting two specially designed telescopic mechanisms, can be used in the bending of display screens. Specifically, by extending and retracting the two ends of the motor output shaft, the bending or straightening of the screen is controlled, greatly improving its applicability. By adding a gearbox, the telescopic torque of the two telescopic rods is increased, ensuring safety during use.

Description

Technical Field

[0001] This application relates to the field of motor technology, and in particular to a bidirectional telescopic stepper motor. Background Technology

[0002] Currently, some motors used for folding displays are conventional lead screw motors, with a nut mounted on the motor shaft. The rotation of the lead screw shaft drives the nut to move back and forth. However, these types of motors are all single-axis outputs, which limits their applicability and reduces their extension torque. Utility Model Content

[0003] The purpose of this application is to provide a bidirectional telescopic stepper motor that can greatly increase telescopic torque, reduce telescopic vibration, and expand the scope of application.

[0004] To achieve the above objectives, this utility model provides a bidirectional telescopic stepper motor, comprising a dual-output-shaft stepper motor and telescopic mechanisms disposed on both output ends of the dual-output-shaft stepper motor. The telescopic mechanism includes a gearbox, a lead screw, a lead screw nut, a guide sleeve, and a telescopic rod. The gearbox is fixed outside the output end of the dual-output-shaft stepper motor. The lead screw is disposed inside the gearbox and coaxially disposed with the output shaft of the dual-output-shaft stepper motor. One end of the lead screw is connected to the output shaft and can rotate with the output shaft. The lead screw nut is sleeved on the lead screw and threadedly connected to the lead screw, and the lead screw nut can move along the lead screw. The guide sleeve is disposed inside the gearbox and can slide along the inner wall of the gearbox. The guide sleeve is sleeved outside the lead screw nut and fixed to the lead screw nut. The telescopic rod is coaxially disposed with the lead screw. One end of the telescopic rod is fixed to the lead screw nut, and the other end of the telescopic rod extends outside the gearbox.

[0005] To facilitate the simultaneous extension or retraction of the two telescopic rods, the two output shafts of the dual-output-shaft stepper motor rotate in opposite directions.

[0006] To further reduce the vibration of the entire motor, the gearbox is detachably connected to the dual-output-shaft stepper motor, and a shock-absorbing pad is provided at the connection between the gearbox and the dual-output-shaft stepper motor.

[0007] In order to limit the movement of the telescopic rod, a retaining ring is provided in the gearbox to limit the movement range of the guide sleeve.

[0008] In summary, this utility model has the following beneficial effects: the bidirectional telescopic stepper motor, by setting two specially designed telescopic mechanisms, is used in the bending of the display screen, that is, by extending and retracting the two ends of the motor output shaft, the bending or flattening of the screen is controlled, which greatly improves the scope of application. Compared with two sets of motors, the production cost is greatly reduced. At the same time, by adding a gearbox, the telescopic torque of the telescopic rods on both sides is increased, ensuring the safety during use. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the bidirectional telescopic stepper motor of this utility model;

[0010] Figure 2 This is a cross-sectional view of the bidirectional telescopic stepper motor of this utility model. Detailed Implementation

[0011] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0012] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0013] like Figure 1 , Figure 2 The bidirectional telescopic stepper motor shown includes a dual-output-shaft stepper motor 1 and telescopic mechanisms disposed on both output ends of the dual-output-shaft stepper motor 1. The two output shafts of the dual-output-shaft stepper motor 1 rotate in opposite directions, thereby enabling the two telescopic mechanisms to extend outward or retract inward simultaneously.

[0014] Specifically, the telescopic mechanism includes a gearbox 2, a lead screw 5, a lead screw nut 6, a guide sleeve 7, and a telescopic rod 4. The gearbox 2 is fixed to the output end of the dual-output-shaft stepper motor 1. The gearbox 2 and the dual-output-shaft stepper motor 1 are detachably connected by screws, and a shock-absorbing pad 3 is provided at the connection between the gearbox 2 and the dual-output-shaft stepper motor 1. The lead screw 5 is disposed inside the gearbox 2 and is coaxially arranged with the output shaft of the dual-output-shaft stepper motor 1. One end of the lead screw 5 is connected to the output shaft through a gear set and can rotate with the output shaft. The lead screw nut 6 is sleeved on the lead screw 4. The guide sleeve 7 is located inside the gearbox 2 and can slide along the inner wall of the gearbox 2. The guide sleeve 7 is fitted outside the lead screw nut 6 and fixed to the lead screw nut 6 with screws. The telescopic rod 4 is coaxial with the lead screw 5 and is fitted outside the lead screw 5. One end of the telescopic rod 4 is fixed to the lead screw nut 6, and the other end of the telescopic rod 4 extends outside the gearbox 2. In addition, a retaining ring 8 that can limit the movement range of the guide sleeve 7 is provided at one end of the gearbox 2, and an end cap 9 is provided at the other end of the gearbox 2.

[0015] In use, the dual-output-shaft stepper motor 1 drives the two output shafts to rotate simultaneously. One output shaft rotates in the forward direction and the other output shaft rotates in the reverse direction. The output shafts drive the two lead screws 5 to rotate through the gear set in the gearbox 2. The output torque is increased by the gear set. The two lead screws 5 drive the two lead screw nuts 6 and guide sleeves 7 to move, thereby causing the two telescopic rods 4 to extend outward or retract inward at the same time, ultimately controlling the display screen to bend or flatten.

[0016] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," "set up," "equipped with," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, principle and application direction of this application should be covered within the scope of protection of this application.

Claims

1. A bidirectional telescopic stepper motor, comprising a dual-output-shaft stepper motor and a telescopic mechanism disposed on both output ends of the dual-output-shaft stepper motor, characterized in that: The telescopic mechanism includes a gearbox, a lead screw, a lead screw nut, a guide sleeve, and a telescopic rod. The gearbox is fixed outside the output end of the dual-output-shaft stepper motor. The lead screw is disposed inside the gearbox and is coaxially arranged with the output shaft of the dual-output-shaft stepper motor. One end of the lead screw is connected to the output shaft and can rotate with the output shaft. The lead screw nut is sleeved on the lead screw and threadedly connected to the lead screw. The lead screw nut can move along the lead screw. The guide sleeve is disposed inside the gearbox and can slide along the inner wall of the gearbox. The guide sleeve is sleeved outside the lead screw nut and fixed to the lead screw nut. The telescopic rod is coaxially arranged with the lead screw. One end of the telescopic rod is fixed to the lead screw nut, and the other end of the telescopic rod extends outside the gearbox.

2. The bidirectional telescopic stepper motor according to claim 1, characterized in that: The two output shafts of the dual-output-shaft stepper motor rotate in opposite directions.

3. The bidirectional telescopic stepper motor according to claim 1, characterized in that: The gearbox is detachably connected to the dual-output-shaft stepper motor, and a shock-absorbing pad is provided at the connection between the gearbox and the dual-output-shaft stepper motor.

4. The bidirectional telescopic stepper motor according to claim 1, characterized in that: The gearbox is equipped with a retaining ring that limits the range of movement of the guide sleeve.

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