External hanging door rolling machine structure with built-in encoder
By embedding an encoder at the end of the main body of the external rolling door motor, the problems of complex mechanical limit structure and poor safety of the external rolling door motor are solved, and high-precision electronic limit and low-cost installation are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN ANLIN INTELLIGENT SCI & TECH
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-26
Smart Images

Figure CN224282476U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of external rolling door motor technology, and in particular, it relates to an external rolling door motor structure with an encoder built in. Background Technology
[0002] Existing roller shutters can be divided into two types based on their power systems: one uses a tubular motor, and the other uses an external motor. Due to the structural limitations of tubular motors, they are only suitable for low-load applications; the more commonly used roller shutters are equipped with external motors.
[0003] External roller shutter motors have high loads. To ensure that the roller shutter door's lifting position does not exceed the upper and lower limits and does not damage the bottom beam or door frame, the requirements for travel limit are becoming increasingly stringent. The internal structure of current external roller shutter motors is relatively mature, so most use external mechanical limiters to limit the travel of the external roller shutter motor. However, there is a disadvantage that the gears are exposed. This not only results in poor safety, but also requires pulling the positioning plate externally when adjusting the position of the travel gear, which is inconvenient. It also leads to the complex structure, high cost, and large size of the entire limit part.
[0004] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable and efficient external rolling door motor structure with built-in encoder. Utility Model Content
[0005] The purpose of this utility model is to provide an external rolling door motor structure with an encoder built-in. An installation part is added to the end of the rolling door motor body, and an absolute encoder is installed in the installation part to electronically limit the output shaft. The electronic limit has high accuracy, is easy to debug, and the built-in encoder has high security. Furthermore, it does not require structural modifications to the entire rolling door motor body and has low installation costs.
[0006] To achieve the above objectives, this utility model employs the following technical solution:
[0007] An external roller door motor structure with an encoder built-in includes a roller door motor body, a mounting part disposed at the end of the roller door motor body, and an encoder disposed on the mounting part; the mounting part includes a mounting main board and a cover plate disposed on the side of the mounting main board away from the roller door motor body, at least a portion of the encoder is located between the mounting main board and the cover plate, and the rotation shaft of the encoder is meshed with the output shaft on the roller door motor body.
[0008] As a preferred embodiment of this invention, the mounting motherboard is provided with a shaft hole for facilitating the passage of the output shaft.
[0009] As a preferred embodiment of this invention, both the encoder and the cover plate are positioned above the shaft hole.
[0010] As a preferred embodiment of this invention, the mounting motherboard is provided with a mounting slot, and at least a portion of the encoder is located within the mounting slot.
[0011] As a preferred embodiment of this invention, a mounting wing plate is provided on a section of the encoder away from the output shaft, and a limiting sidewall for connecting with the mounting wing plate is provided in the mounting groove.
[0012] As a preferred embodiment of this invention, the cover plate has an opening on its lower side facing the output shaft, and at least a portion of the encoder's rotation shaft is located at the opening.
[0013] As a preferred embodiment of this utility model, the mounting main board is provided with fixing bolts for connecting to the main body of the rolling door motor.
[0014] As a preferred embodiment of this invention, both the mounting motherboard and the cover plate are coated with a waterproof layer.
[0015] As a preferred embodiment of this invention, a first gear is provided on the output shaft, and a second gear for meshing with the first gear is provided on the rotating shaft.
[0016] As a preferred embodiment of this utility model, the mounting motherboard is a one-piece molded component.
[0017] The advantages of this utility model of an external rolling door motor structure with built-in encoder are as follows: an installation part is added to the end of the rolling door motor body, and an absolute encoder is installed in the installation part to electronically limit the output shaft. The electronic limit has high accuracy and is easy to debug. The built-in encoder has high security and does not require structural modification of the entire rolling door motor body, resulting in low installation cost. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of an encoder-integrated external rolling door motor structure according to the present invention;
[0019] Figure 2 This is a schematic diagram of the mounting part in one embodiment of an encoder-integrated external rolling door motor structure of the present invention;
[0020] Figure 3 This is a schematic diagram of the mounting part (with the cover plate hidden) in one embodiment of an external roller door motor structure with an encoder built in this utility model;
[0021] In the diagram: 1. Mounting section, 11. Mounting main board, 12. Cover plate, 111. Shaft hole, 112. Mounting groove, 113. Fixing bolt, 2. Encoder, 21. Rotating shaft, 3. Rolling door motor body, 31. Output shaft. Detailed Implementation
[0022] The following are specific embodiments of the present invention, which further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement and steps of the modules and steps set forth in these embodiments do not limit the scope of the present invention.
[0024] At the same time, it should be understood that, for ease of description, the process shown in the attached diagram is not performed in isolation, but rather involves multiple steps that overlap.
[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0026] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.
[0027] Techniques, methods, and systems known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.
[0028] Example 1: As Figures 1 to 3 As shown, this is only one embodiment of the present utility model. An external roller door motor structure with an encoder built-in includes a roller door motor body 3, a mounting part 1 disposed at the end of the roller door motor body 3, and an encoder 2 disposed on the mounting part 1. The mounting part 1 includes a mounting main board 11 and a cover plate 12 disposed on the side of the mounting main board 11 away from the roller door motor body 3. At least a portion of the encoder 2 is located between the mounting main board 11 and the cover plate 12. The rotating shaft 21 of the encoder 2 is meshed with the output shaft 31 on the roller door motor body 3.
[0029] In this utility model, the external rolling door motor directly adopts a conventional rolling door motor, and the mounting part 1 is directly installed at the end of the rolling door motor body 3. Of course, the mounting part 1 and the output shaft 31 are both located at the same end of the rolling door motor body 3. The encoder 2 is an absolute encoder, which is mounted on the mounting part 1. The rotating shaft 21 of the encoder 2 is meshed with the output shaft 31 on the rolling door motor body 3. The rotation of the output shaft 31 is recorded by the absolute encoder. After obtaining the reading of the absolute encoder when the upper and lower limits of the rolling door are reached, the two readings of the absolute encoder are limited so that when the output shaft 31 rotates, the absolute encoder reading must be between the two limited readings. Once the limited number is reached, the absolute encoder stops rotating (stops the unidirectional rotation in this direction) to limit the output shaft 31.
[0030] The mounting part 1 includes a mounting main board 11 and a cover plate 12 disposed on the side of the mounting main board 11 away from the rolling door motor body 3. The mounting main board 11 is directly connected to the end face of the rolling door motor body 3. After the encoder 2 is placed on the mounting main board 11, the cover plate 12 covers the mounting main board 11 to cover the encoder 2. At least a part of the encoder 2 is located between the mounting main board 11 and the cover plate 12, thus completing the "built-in" installation of the encoder 2.
[0031] This allows for the built-in installation of the encoder without altering the body structure of the external rolling door motor. It effectively limits the output shaft in two rotational directions. The encoder 2 has a basically built-in structure, with no large number of mechanical connection structures exposed. It is easy to install, adjust, and use, and the electronic limit accuracy is high, making the external rolling door motor more stable in use.
[0032] This utility model discloses an external rolling door motor structure with an encoder built-in. An installation part is added to the end of the rolling door motor body, and an absolute encoder is installed in the installation part to electronically limit the output shaft. The electronic limit has high accuracy and is easy to debug. The encoder is built-in, which has high security and does not require structural modification of the entire rolling door motor body, resulting in low installation cost.
[0033] Example 2, still as Figures 1 to 3 As shown, this is only one embodiment of the present utility model. Based on the first embodiment, in the external rolling door motor structure with encoder built-in of the present utility model, the mounting main board 11 is provided with a shaft hole 111 for facilitating the passage of the output shaft 31.
[0034] It should be noted that both the encoder 2 and the cover plate 12 are located above the shaft hole 111.
[0035] In other words, the output shaft 31 in the external rolling door motor is located below the encoder 2.
[0036] Furthermore, the cover plate 12 has an opening on its lower side facing the output shaft 31, that is, the opening faces downward. At least a portion of the rotating shaft 21 of the encoder 2 is located at the opening. The output shaft 31 is provided with a first gear, and the rotating shaft 21 is provided with a second gear for meshing with the first gear. In other words, the second gear on the rotating shaft 21 of the encoder 2 extends downward from inside the cover plate 12 to mesh with the first gear on the output shaft 31 below the encoder 2.
[0037] In this way, only the rotating shaft 21 that meshes with the output shaft of encoder 2 protrudes from below the opening, and the entire electronic part of encoder 2 is effectively protected inside the cover plate 12, preventing water and dust from falling directly onto encoder 2 and ensuring the safe and stable use of the electronic limit structure.
[0038] Example 3, still as Figures 1 to 3 As shown, this is only one embodiment of the present utility model. Based on any of the above embodiments, in the external roller door motor structure with encoder built-in of the present utility model, the mounting main board 11 is provided with a mounting groove 112, and at least a part of the encoder 2 is located in the mounting groove 112.
[0039] The encoder 2 has a mounting wing plate at a section away from the output shaft 31, and a limiting sidewall is provided in the mounting groove 112 for connecting with the mounting wing plate. That is, the mounting wing plate is fixed to the limiting sidewall with bolts to ensure the stable installation of the encoder 2.
[0040] Of course, the mounting main board 11 is provided with fixing bolts 113 for connecting with the rolling door motor body 3.
[0041] Furthermore, the surfaces of the mounting motherboard 11 and the cover plate 12 are coated with a waterproof layer to prevent water from entering the encoder 2.
[0042] Finally, the mounting motherboard 11 is a one-piece molded part, which ensures the structural stability of the mounting motherboard 11, and the mounting part has higher structural strength and longer service life.
[0043] This utility model discloses an external rolling door motor structure with an encoder built-in. An installation part is added to the end of the rolling door motor body, and an absolute encoder is installed in the installation part to electronically limit the output shaft. The electronic limit has high accuracy and is easy to debug. The encoder is built-in, which has high security and does not require structural modification of the entire rolling door motor body, resulting in low installation cost.
[0044] This utility model is not limited to the specific embodiments described above, and various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made to the above embodiments based on the technical essence of this utility model should be included within the protection scope of this utility model.
Claims
1. An external rolling door motor structure with an encoder built-in, characterized in that: The device includes a rolling door motor body (3), a mounting part (1) disposed at the end of the rolling door motor body (3), and an encoder (2) disposed on the mounting part (1); the mounting part (1) includes a mounting main board (11) and a cover plate (12) disposed on the side of the mounting main board (11) away from the rolling door motor body (3), at least a portion of the encoder (2) is located between the mounting main board (11) and the cover plate (12), and the rotating shaft (21) of the encoder (2) is meshed with the output shaft (31) on the rolling door motor body (3).
2. The encoder-embedded external rolling door motor structure according to claim 1, characterized in that: The mounting motherboard (11) is provided with a shaft hole (111) for the output shaft (31) to pass through.
3. The encoder-embedded external rolling door motor structure according to claim 2, characterized in that: The encoder (2) and the cover plate (12) are both located above the shaft hole (111).
4. The encoder-embedded external rolling door motor structure according to claim 1, characterized in that: The mounting motherboard (11) is provided with a mounting slot (112), and at least a portion of the encoder (2) is located in the mounting slot (112).
5. The encoder-embedded external rolling door motor structure according to claim 4, characterized in that: The encoder (2) has a mounting wing plate on a section away from the output shaft (31), and a limiting sidewall for connecting with the mounting wing plate is provided in the mounting groove (112).
6. The encoder-embedded external rolling door motor structure according to claim 1, characterized in that: The cover plate (12) has an opening on its underside facing the output shaft (31), and at least a portion of the rotating shaft (21) of the encoder (2) is located at the opening.
7. The encoder-embedded external rolling door motor structure according to claim 1, characterized in that: The mounting main board (11) is provided with fixing bolts (113) for connecting to the rolling door motor body (3).
8. The encoder-embedded external rolling door motor structure according to claim 1, characterized in that: The mounting motherboard (11) and cover plate (12) are both coated with a waterproof layer.
9. The encoder-embedded external rolling door motor structure according to claim 1, characterized in that: The output shaft (31) is provided with a first gear, and the rotating shaft (21) is provided with a second gear for meshing with the first gear.
10. The encoder-embedded external rolling door motor structure according to claim 1, characterized in that: The mounting motherboard (11) is a one-piece molded part.