A motor transmission structure with simple structure and stable transmission

Abstract

The utility model discloses a simple structure, transmission stable motor drive structure relates to transmission structure technical field, including the casing and setting in the motor, first gear, screw rod and push block of casing, the output shaft of motor is connected with second gear, second gear is engaged with first gear, the diameter of second gear is less than the diameter of first gear, the centre of first gear is connected with screw rod, and the thread of screw rod surface is half circle, and push block is connected on screw rod, the motor drive structure of the application is used to push the displacement of smaller displacement of external structure and moves, and the simple structure is also low in production cost, and transmission is also very stable.

Description

Technical Field

[0001] This utility model relates to the field of transmission structure technology, specifically a motor transmission structure that is simple in structure and stable in transmission. Background Technology

[0002] A lead screw motor, also known as a linear motor, is a type of motor widely used in industrial automation. It converts rotational motion into linear motion, either internally or externally, primarily relying on the principle of helical transmission. Specifically, it contains a screw and a nut, either inside or outside the motor. When the motor rotates, the screw and nut exchange motion via the helical transmission principle. For every certain angle the motor rotates, the nut moves a certain distance along the screw's axial direction, thus achieving precise linear motion.

[0003] Most existing lead screw motors use multiple gears to address torque issues in order to bear heavy loads. However, lead screw motors have a complex structure and suffer from unstable transmission. Utility Model Content

[0004] This utility model discloses a simple and stable motor transmission structure to solve the technical problems of complex structure and unstable transmission.

[0005] To solve the above-mentioned technical problems, the present invention proposes the following optimized technical solution:

[0006] A simple and stable motor transmission structure is characterized by comprising a housing and a motor, a first gear, a lead screw, and a push block disposed within the housing. The output shaft of the motor is connected to a second gear, which meshes with the first gear. The diameter of the second gear is smaller than that of the first gear. The lead screw is connected to the center of the first gear, and the thread on the surface of the lead screw is a half-turn. The push block is connected to the lead screw.

[0007] Furthermore, it also includes a spring, which is sleeved on the lead screw, with its two ends abutting against the housing and the thread, respectively.

[0008] Furthermore, the push block includes a connecting part and a pushing part, the push block is connected to the lead screw through the connecting part, and the pushing part extends out of the housing.

[0009] Furthermore, the connecting part is loosely fitted onto the lead screw.

[0010] The present invention has the following advantages over the prior art:

[0011] The motor transmission structure of this utility model is mainly used to drive the movement of external structures with small displacements. It uses two gears of different sizes to mesh. The smaller gear drives the larger gear to rotate. The larger gear rotates at a small angle, which can cooperate with the lead screw to drive the push block to move a small displacement. In addition, the thread on the lead screw is only set to half a turn, which is also to adapt to the small displacement of the push block. Therefore, the motor transmission structure of this application is used to push the external structure to move with small displacements. It has a simple structure, low production cost, and stable transmission. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of the shell of this utility model.

[0014] In the diagram: 1. Housing; 2. Motor; 3. First gear; 4. Lead screw; 5. Push block; 6. Second gear; 7. Thread; 8. Spring; 9. Connecting part; 10. Pushing part. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] The motor drive structure provided in this application is mainly used in smart door locks to push the limit block in the clutch structure to move a small displacement.

[0017] See Figures 1-2 A simple and stable transmission structure for a motor 2 is characterized by comprising a housing 1 and a motor 2, a first gear 3, a lead screw 4, and a push block 5 disposed within the housing 1. A second gear 6 is connected to the output shaft of the motor 2, meshing with the first gear 3. The diameter of the second gear 6 is smaller than that of the first gear 3, specifically one-third the diameter of the first gear 3, meaning the rotation angle of the first gear 3 is much smaller than that of the second gear 6. This drives the lead screw 4 to rotate at a small angle. The lead screw 4 is connected to the center of the first gear 3, and the thread 7 on the surface of the lead screw 4 is a half-turn. The push block 5 is connected to the lead screw 4, and the half-turn thread 7 also drives the push block 5 to move with a small displacement.

[0018] The motor drive structure of this application is used to drive an external structure to move a small displacement. It has a simple structure, low production cost, and stable transmission.

[0019] In this embodiment, a spring 8 is also included, which is sleeved on the lead screw 4. The two ends of the spring 8 abut against the housing 1 and the thread 7, respectively. When the motor 2 drives the lead screw 4 to rotate through the first gear 3 and the second gear 6, the thread 7 of the lead screw 4 approaches the spring 8 to compress the spring 8. If the motor 2 malfunctions and cannot return the lead screw 4 to its original position in time, the rebound force of the spring 8 can return the lead screw 4 to its original position.

[0020] In this embodiment, the push block 5 includes a connecting part 9 and a pushing part 10. The push block 5 is connected to the lead screw 4 through the connecting part 9. The pushing part 10 extends outside the housing 1 and moves to push the external structure to move.

[0021] In this embodiment, the connecting part 9 is loosely fitted onto the lead screw 4. When the lead screw 4 rotates, the thread 7 on it pushes the connecting part 9, thereby moving the push block 5.

[0022] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A simple and stable motor transmission structure, characterized in that, The device includes a housing and a motor, a first gear, a lead screw, and a push block disposed within the housing. The output shaft of the motor is connected to a second gear, which meshes with the first gear. The diameter of the second gear is smaller than that of the first gear. The lead screw is connected to the center of the first gear, and the thread on the surface of the lead screw is a half-turn. The push block is connected to the lead screw.

2. The simple and stable motor transmission structure according to claim 1, characterized in that, It also includes a spring, which is sleeved on the lead screw, with its two ends abutting against the housing and the thread, respectively.

3. The simple and stable motor transmission structure according to claim 1, characterized in that, The push block includes a connecting part and a pushing part. The push block is connected to the lead screw through the connecting part, and the pushing part extends out of the housing.

4. The simple and stable motor transmission structure according to claim 3, characterized in that, The connecting part is loosely fitted onto the lead screw.

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