A connection structure for an oil-sealed motor

Abstract

This utility model provides a connection structure for an oil-sealed motor, relating to the field of tubular motor technology. It includes a gearbox, a motor cylinder, and a connector for connecting the gearbox and the motor cylinder. The gearbox is filled with lubricating oil. The connector includes connecting bolts. Sealing rings are provided at the connections between the gearbox and the motor cylinder and the connecting bolts. The motor cylinder has a first bolt hole for easy passage of the connecting bolt, which is filled with sealant. This utility model provides sealing rings at the connections between the gearbox and the motor cylinder and the connecting bolts, and also applies sealant to the ends of the connecting bolts at the motor cylinder, effectively ensuring stable sealing within the motor cylinder. This results in a good oil seal within the motor cylinder and high safety.

Description

Technical Field

[0001] This utility model relates to the field of tubular motor technology, and in particular, it relates to a connection structure for an oil-sealed motor. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque and convert electrical energy into mechanical energy, serving as a power source for electrical appliances or various machines. There are many types of electric motors, such as tubular motors. As a small type of motor, tubular motors are widely used in roller shutters, roller blinds, garage doors, awnings, etc., and have good performance.

[0003] Existing tubular motors typically employ a continuous oiling lubrication method, where lubricating oil is added to the gears inside the gearbox at regular intervals. However, this requires the motor gearbox to be opened and filled with oil multiple times, resulting in poor gearbox structural stability. Furthermore, the lubrication effect inside the gearbox differs significantly between when lubricating oil is first added and after prolonged use. Over time, this leads to severe gear wear and reduced safety.

[0004] A new type of oil-sealed tubular motor has been developed, which directly seals the gearbox and pre-fills it with lubricating oil to continuously and stably lubricate the gears. For example, Chinese invention patent 202510123087X provides an oil-immersed helical gear tubular motor structure, which relates to the field of tubular motor technology. It includes a motor cylinder and a gearbox located inside a motor sleeve. The motor cylinder has a motor shaft, and the gearbox has an output shaft. A reduction component is installed inside the gearbox. Helical gear stripes are provided on the motor shaft, the reduction component, and the output gear. The gearbox has a cover, and a first skeleton oil seal is provided at the connection between the cover and the motor shaft. A second skeleton oil seal is provided at the connection between the gearbox and the output shaft. A first sealing gasket is provided at the connection between the gearbox and the cover. The gearbox is filled with lubricating oil. This invention seals the gearbox, fills it with lubricating oil, and uses helical gear reduction instead of planetary reduction in the formed oil seal structure, providing continuous and stable lubrication. It has low vibration and noise, a large helical gear reduction ratio, better deceleration effect, simple structure, low maintenance cost, and effectively extended service life.

[0005] However, the above-mentioned oil-immersed helical gear tubular motor structure has the following defects: the gearbox and motor cylinder are connected by the same bolt, which will lead to poor sealing effect. Moreover, the lubricating oil is located inside the gearbox, and the gear friction will generate high temperature, which will produce high temperature and high pressure gas. This gas is not only high pressure, but also corrosive. It will continuously cause corrosion and compression at the connection between the gearbox and motor cylinder and the bolt, and the sealing effect will gradually deteriorate, leading to lubricating oil leakage and poor safety.

[0006] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable and efficient connection structure for oil-sealed motors. Utility Model Content

[0007] The purpose of this utility model is to provide a connection structure for an oil-sealed motor. Sealing rings are provided at the connection points between the gearbox and the motor barrel and the connecting bolts. The ends of the connecting bolts at the motor barrel are also sealed with glue, which effectively ensures the sealing stability of the motor barrel, and provides a good oil seal effect and high safety inside the motor barrel.

[0008] To achieve the above objectives, this utility model employs the following technical solution:

[0009] A connection structure for an oil-sealed motor includes a gearbox, a motor cylinder, and a connector for connecting the gearbox and the motor cylinder. The gearbox is filled with lubricating oil. The connector includes a connecting bolt. A sealing ring is provided at the connection points between the gearbox, the motor cylinder, and the connecting bolt. The motor cylinder has a first bolt hole for facilitating the passage of the connecting bolt, and the first bolt hole is filled with sealant.

[0010] As a preferred embodiment of this invention, a sealing end plate is provided at one end of the motor cylinder near the gearbox.

[0011] As a preferred embodiment of this utility model, the sealing end plate is provided with a second bolt hole for facilitating the passage of the connecting bolt, and a second sealing ring is provided at the connection between the connecting bolt and the second bolt hole.

[0012] As a preferred embodiment of this utility model, a first sealing ring is provided at the connection point between the connecting bolt and the first bolt hole.

[0013] As a preferred embodiment of this invention, the end of the connecting bolt is provided with an annular plate, the outer diameter of which is the same as the outer diameter of the first bolt hole.

[0014] As a preferred embodiment of this invention, a screwing head is provided on the side of the annular plate away from the connecting bolt.

[0015] As a preferred embodiment of this invention, the outer diameter of the screwing head is smaller than the outer diameter of the annular plate, and at least a portion of the sealant is located between the screwing head and the inner wall of the first bolt hole.

[0016] The beneficial effects of the connection structure for an oil-sealed motor of this utility model are as follows: sealing rings are provided at the connection points between the gearbox and the motor barrel and the connecting bolts, and the ends of the connecting bolts at the motor barrel are also sealed with glue, which effectively ensures the sealing stability of the motor barrel, and the oil sealing effect inside the motor barrel is good and the safety is high. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the connection structure for an oil-sealed motor according to the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the connection structure for an oil-sealed motor according to the present invention (gearbox hidden).

[0019] Figure 3 This is a schematic diagram of the connecting bolt in one embodiment of the connecting structure for an oil-sealed motor according to the present invention;

[0020] In the diagram: 1. Connecting bolt, 11. First sealing ring, 12. Second sealing ring, 13. Annular plate, 14. Tightening head, 2. Gearbox, 21. First bolt hole, 22. Sealing adhesive, 3. Motor cylinder, 31. Sealing end plate. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Example 1: As Figures 1 to 3 The diagram shown is merely one embodiment of the present invention. A connection structure for an oil-sealed motor includes a gearbox 2, a motor cylinder 3, and a connector for connecting the gearbox 2 and the motor cylinder 3. The gearbox 2 is filled with lubricating oil. The connector includes a connecting bolt 1. Sealing rings are provided at the connection points between the gearbox 2 and the motor cylinder 3 and the connecting bolt 1. The motor cylinder 2 is provided with a first bolt hole 21 for facilitating the passage of the connecting bolt 1. The first bolt hole 21 is filled with sealant 22.

[0028] In this invention, sealing rings are provided at the connection points between the gearbox and the motor barrel and the connecting bolts. The ends of the connecting bolts at the motor barrel are also sealed with glue, which effectively ensures the stable sealing of the motor barrel, provides good oil sealing effect inside the motor barrel, and ensures high safety.

[0029] Example 2, 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 a connection structure for an oil-sealed motor of the present utility model, at the connection between the connecting bolt 1 and the motor cylinder 3, a sealing end plate 31 is provided at the end of the motor cylinder 3 near the gearbox 2. The sealing end plate 31 is provided with a second bolt hole for facilitating the passage of the connecting bolt 1. A second sealing ring 12 is provided at the connection between the connecting bolt 1 and the second bolt hole.

[0030] 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 connection structure for an oil-sealed motor of the present utility model, a first sealing ring 11 is provided at the connection between the connecting bolt 1 and the gearbox 2, and at the connection between the connecting bolt 1 and the first bolt hole 21.

[0031] The end of the connecting bolt 1 is provided with an annular plate 13. The outer diameter of the annular plate 13 is the same as the inner diameter of the first bolt hole 21. The annular plate 13 just fills the entire first bolt hole 21, which provides strength support.

[0032] It should be noted that the annular plate 13 also serves as a limiting device. The side of the first bolt hole 21 near the inside of the gearbox is provided with a protruding plate extending into the inside of the first bolt hole 21. The diameter of the first bolt hole 21 located at the protruding plate is smaller than the outer diameter of the annular plate 13, so that the first sealing ring 11 is just clamped between the annular plate 13 and the protruding plate. It can also limit the position of the connecting bolt 1 inserted into the gearbox 2.

[0033] The annular plate 13 is provided with a screwing head 14 on the side away from the connecting bolt 1. The screwing head 14 is provided with an internal hexagonal screwing groove, and the connecting bolt 1 can be screwed in for installation using a hexagonal wrench.

[0034] Of course, the outer diameter of the screwing head 14 is smaller than the outer diameter of the annular plate 13. At least a portion of the sealant 22 is located between the screwing head 14 and the inner wall of the first bolt hole 21, and another portion of the sealant 22 is located on the side of the screwing head 14 away from the annular plate 13, so that the sealant 22 is flush with the outer surface of the gearbox 2.

[0035] Example 4, still as Figures 1 to 3 The above is only one embodiment of the present invention. Based on any of the above embodiments, in the connection structure for an oil-sealed motor of the present invention, the entire tubular motor consists of a motor cylinder that houses the motor and a gearbox 2 for reducing the speed of the motor rotation. The gearbox 2 is connected to the motor cylinder 3. The motor cylinder adopts a conventional motor cylinder structure, and the gearbox 2 has been improved. The motor shaft of the motor in the motor cylinder extends from the motor cylinder into the gearbox. The gearbox is provided with an output shaft connected to the motor shaft. The output shaft extends from the end of the gearbox 2 away from the motor cylinder 3 to drive the roller shutter door.

[0036] In this utility model, the gearbox 2 is in a sealed state and is oil-sealed and oil-immersed. Specifically, a sealing end plate 31 is provided at one end of the motor cylinder 3 near the gearbox 2, and a sealing gasket is provided at the connection between the gearbox 2 and the sealing end plate 31 of the motor cylinder 3; a skeleton oil seal is provided at the connection between the sealing end plate 31 and the motor shaft; a skeleton oil seal is also provided at the connection between the gearbox 2 and the output shaft; and the gearbox 2 is filled with lubricating oil.

[0037] Since both the output shaft and the motor shaft are rotating parts, the skeleton oil seal, which seals the output shaft and the motor shaft, is a representative seal widely used in rotating shaft parts. The skeleton oil seal is a type of seal and one of the commonly used sealing ring series. It is mainly used for sealing the oil in mechanical components. The skeleton oil seal is a component used to prevent oil from leaking from the gaps in the machine. The skeleton oil seal consists of three parts: the oil seal rubber elastomer, the reinforcing skeleton, and the self-tightening spring. The rubber elastomer consists of the bottom, waist, cutting edge, and sealing lip. Usually, the actual inner diameter of the skeleton oil seal is smaller than the shaft diameter, with a certain "interference fit" to enable the skeleton oil seal to have sealing performance.

[0038] This utility model discloses a connection structure for an oil-sealed motor. Sealing rings are provided at the connection points between the gearbox and the motor barrel and the connecting bolts. The ends of the connecting bolts at the motor barrel are also sealed with glue, which effectively ensures the sealing stability of the motor barrel, provides good oil sealing effect inside the motor barrel, and ensures high safety.

[0039] 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. A connection structure for an oil-sealed motor, characterized in that: The device includes a gearbox (2), a motor cylinder (3), and a connector for connecting the gearbox (2) and the motor cylinder (3). The gearbox (2) is filled with lubricating oil. The connector includes a connecting bolt (1). A sealing ring is provided at the connection between the gearbox (2) and the motor cylinder (3) and the connecting bolt (1). The motor cylinder (3) is provided with a first bolt hole (21) for the connecting bolt (1) to pass through. The first bolt hole (21) is filled with sealant (22).

2. The connection structure for an oil-sealed motor according to claim 1, characterized in that: A sealing end plate (31) is provided at one end of the motor cylinder (3) near the gearbox (2).

3. The connection structure for an oil-sealed motor according to claim 2, characterized in that: The sealing end plate (31) is provided with a second bolt hole for the connecting bolt (1) to pass through, and a second sealing ring (12) is provided at the connection between the connecting bolt (1) and the second bolt hole.

4. The connection structure for an oil-sealed motor according to claim 1, characterized in that: A first sealing ring (11) is provided at the connection between the connecting bolt (1) and the first bolt hole (21).

5. A connection structure for an oil-sealed motor according to claim 1, characterized in that: The end of the connecting bolt (1) is provided with an annular plate (13), the outer diameter of which is the same as the inner diameter of the first bolt hole (21).

6. A connection structure for an oil-sealed motor according to claim 5, characterized in that: A screwing head (14) is provided on the side of the annular plate (13) away from the connecting bolt (1).

7. A connection structure for an oil-sealed motor according to claim 6, characterized in that: The outer diameter of the screwing head (14) is smaller than the outer diameter of the annular plate (13), and at least a portion of the sealant (22) is located between the screwing head (14) and the inner wall of the first bolt hole (21).

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