Tubular motor pressure relief structure

Abstract

The utility model provides a tubular motor pressure relief structure, which relates to the technical field of tubular motors, and comprises a gear box and a functional valve arranged at one end of the gear box far away from a motor sleeve, the functional valve comprises a mounting piece and a blocking piece arranged at one end of the mounting piece far away from the gear box, and a connecting channel communicated with the gear box is arranged in a bolt piece. The blocking piece comprises a blocking plate and a blocking ball connected with the blocking plate through a spring, and at least one part of the blocking ball is located in the connecting channel. According to the tubular motor pressure relief structure, the oil filling port and the pressure relief port of the oil-immersed gearbox are directly combined into one mounting hole, the functional valve is arranged in the mounting hole, lubricating oil can be filled into the gearbox when the functional valve is screwed off, the gearbox can be subjected to oil sealing when the functional valve is screwed down, and when the pressure in the gearbox is higher than a certain value, the functional valve is screwed off. The pressure overcomes the elastic force of the spring, high-pressure gas is discharged from a connecting channel of the functional valve, and safe and stable work of the oil-immersed gearbox is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of tubular motor technology, and in particular, to a pressure relief structure for a tubular 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 consist of a motor and a reducer. The motor's output shaft is connected to the reducer. The reducer's function is to reduce speed, increase torque, and lower the load / motor moment of inertia ratio while ensuring precise transmission. Current reducers commonly employ planetary or helical gear reductions. Planetary gear reductions are not suitable for oil-sealed gearboxes, requiring frequent lubrication, which is cumbersome and causes significant wear on the reduction mechanism. Conversely, helical gear reductions can be oil-sealed, allowing the entire reduction mechanism to be directly immersed in lubricating oil. A single lubrication cycle provides long-lasting lubrication with stable lubrication. For example, Chinese invention patent 202510123087.X provides an oil-immersed helical gear tubular motor structure, relating to the field of tubular motor technology. It includes a motor cylinder and a gearbox located within a motor sleeve. The motor cylinder has a motor shaft, and the gearbox has an output shaft. A reduction gear is installed inside the gearbox. Helical gear stripes are provided on the motor shaft, the reduction gear, 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 for better reduction effect, a simple structure, low maintenance cost, and effectively extended service life.

[0004] However, the above-mentioned oil-immersed helical gear tubular motor structure still has the following defects: an oil filling port is required to facilitate the addition of lubricating oil. At the same time, the high-speed friction of the gears in the gearbox causes the lubricating oil to generate high-temperature and high-pressure gas, which also requires a pressure relief port. Neither the oil filling port nor the pressure relief port can guarantee that the oil seal of the gearbox is stable under normal circumstances so that the lubricating oil will not leak out. Furthermore, the pressure relief port cannot guarantee that the pressure in the gearbox will only be relieved when it exceeds a certain value.

[0005] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable and efficient tubular motor pressure relief structure. Utility Model Content

[0006] The purpose of this utility model is to provide a tubular motor pressure relief structure that directly combines the oil filling port and pressure relief port of the oil-immersed gearbox into a single mounting hole. A functional valve is installed in the mounting hole. When the functional valve is unscrewed, lubricating oil can be added into the gearbox. When the functional valve is tightened, the gearbox is oil-sealed. When the pressure inside the gearbox exceeds a certain value, the pressure overcomes the spring force, and the high-pressure gas is released from the connection channel of the functional valve, ensuring the safe and stable operation of the oil-immersed gearbox.

[0007] To achieve the above objectives, this utility model employs the following technical solution:

[0008] A tubular motor pressure relief structure includes a gearbox and a functional valve disposed at one end of the gearbox away from the motor sleeve. The functional valve includes a mounting component and a blocking component disposed at one end of the mounting component away from the gearbox. The mounting component has a connection channel communicating with the gearbox. The blocking component includes a blocking plate and a blocking ball connected to the blocking plate by a spring. At least a portion of the blocking ball is located within the connection channel.

[0009] As a preferred embodiment of the present invention, the mounting component includes a mounting body and a threaded component disposed on the side of the mounting body near the gearbox. The gearbox is provided with a mounting hole, and the mounting hole is provided with an internal thread for connecting with the threaded component.

[0010] As a preferred embodiment of this invention, a washer is fitted on the outer side of the threaded component.

[0011] As a preferred embodiment of this utility model, the mounting body is provided with a connecting inner cylinder on the side away from the threaded component, and the blocking plate is provided with a connecting outer cylinder for connecting with the connecting inner cylinder on the side close to the mounting component.

[0012] As a preferred embodiment of this utility model, the outer side of the connecting inner cylinder is provided with a venting notch, and the connecting inner cylinder is provided with a venting groove for connecting the connecting channel and the venting notch.

[0013] As a preferred embodiment of this utility model, the mounting body is an external hexagonal component.

[0014] As a preferred embodiment of this invention, a blocking ring is provided inside the connecting channel, wherein the inner diameter of the blocking ball is smaller than the inner diameter of the connecting channel, and the inner diameter of the blocking ball is larger than the inner diameter of the blocking ring.

[0015] As a preferred embodiment of this invention, an outwardly extending wing plate is provided on the outer side of the blocking plate.

[0016] As a preferred embodiment of this utility model, rubber rings are provided between the extended wing plate and the connecting outer cylinder, and between the connecting outer cylinder and the mounting body, to provide protection during the transportation of the functional valve.

[0017] As a preferred embodiment of this utility model, both the mounting component and the baffle plate are integrally formed parts.

[0018] The beneficial effects of this utility model's tubular motor pressure relief structure are as follows: it directly combines the oil filling port and pressure relief port of the oil-immersed gearbox into a single mounting hole, and sets a functional valve in the mounting hole. Unscrewing the functional valve allows lubricating oil to be added into the gearbox, while tightening the functional valve seals the gearbox oil. Furthermore, when the pressure inside the gearbox exceeds a certain value, the pressure overcomes the spring force, and the high-pressure gas is released from the connection channel of the functional valve, ensuring the safe and stable operation of the oil-immersed gearbox. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the tubular motor pressure relief structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the disassembled structure of the gearbox and functional valve in one embodiment of a tubular motor pressure relief structure according to the present invention.

[0021] Figure 3 This is a cross-sectional view of the functional valve in one embodiment of a tubular motor pressure relief structure according to the present invention.

[0022] Figure 4 This is a schematic diagram of the mounting component in one embodiment of a tubular motor pressure relief structure according to this utility model;

[0023] Figure 5 This is a schematic diagram of the blocking component in one embodiment of a tubular motor pressure relief structure according to the present invention.

[0024] In the diagram: 3. Gearbox, 31. Mounting hole, 32. Motor sleeve, 1. Mounting part, 11. Mounting body, 12. Threaded part, 121. Washer, 13. Connecting inner cylinder, 131. Venting notch, 132. Venting groove, 14. Connecting channel, 141. Blocking ring, 2. Blocking part, 21. Blocking plate, 211. Outer wing plate, 22. Blocking ball, 23. Spring, 24. Connecting outer cylinder. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] Example 1: As Figures 1 to 5 The illustration shows only one embodiment of the present invention. A tubular motor pressure relief structure includes a gearbox 3 and a functional valve disposed at the end of the gearbox 3 away from the motor sleeve 32. The functional valve includes a mounting member 1 and a blocking member 2 disposed at the end of the mounting member 1 away from the gearbox 3. The mounting member 1 is provided with a connecting channel 14 communicating with the gearbox 3. The blocking member 2 includes a blocking plate 21 and a blocking ball 22 connected to the blocking plate 21 by a spring 23. At least a portion of the blocking ball 22 is located within the connecting channel 14. The gearbox 3 is provided with a mounting hole 31.

[0032] The oil-immersed tubular motor also includes a motor sleeve 32 and a gearbox 3. The motor shaft inside the motor sleeve 32 is connected to the helical gear reducer inside the gearbox 3, which reduces the speed of the motor shaft and transmits the speed to the output shaft inside the gearbox 3, thereby driving the object to rotate (e.g., the lifting and lowering of a roller shutter door). The gearbox 3 is sealed and filled with lubricating oil to continuously lubricate the helical gear reducer inside the gearbox 3, ensuring stable rotational transmission. In this utility model, an opening is made on the side of the gearbox 3 away from the motor sleeve 32 as a mounting hole 31. Before using the gearbox 3, lubricating oil is added into the gearbox 3 through the mounting hole 31. Then, a functional valve is screwed into the mounting hole 31 to complete the oil seal of the gearbox 3. The friction of the lubricating oil inside the gearbox 3 generates high-temperature and high-pressure gas until the pressure inside the gearbox 3 exceeds a certain value, at which point the high-pressure gas is released from the functional valve. In short, the mounting hole 31 and the functional valve serve the functions of oil filling, oil sealing, and pressure relief of the gearbox.

[0033] Specifically, the functional valve includes a mounting component 1 and a blocking component 2 disposed at one end of the mounting component 1 away from the gearbox 3. The mounting component 1 is provided with a connection channel 14 communicating with the gearbox 3. The blocking component 2 includes a blocking plate 21 and a blocking ball 22 connected to the blocking plate 21 by a spring 23. At least a portion of the blocking ball 22 is located within the connection channel 14.

[0034] After the function valve is unscrewed, lubricating oil can be added to the mounting hole 31;

[0035] After the function valve is screwed into the mounting hole 31, the mounting part 1 is inserted into the mounting hole, and the connecting channel 14 inside the mounting part 1 is blocked by the blocking ball 22, thus completing the oil seal of the gearbox 3.

[0036] When the pressure inside the gearbox 3 continues to increase and the pressure exceeds that of the spring 23, the spring 23 will be compressed, causing the blocking ball 22 to release its obstruction of the connecting channel 14. At this time, the high-pressure gas can escape from the side of the blocking ball 22 through the connecting channel 14, thus completing the depressurization of the gearbox 3.

[0037] Of course, the pressure relief reduces the pressure inside the gearbox 3. When the pressure is less than the pressure of the spring 23, the spring 23 continues to push the blocking ball 22 to block the connecting channel 14, and the gearbox 3 continues to maintain the oil seal state.

[0038] In summary, this utility model provides a tubular motor pressure relief structure that directly combines the oil filling port and pressure relief port of an oil-immersed gearbox into a single mounting hole. A functional valve is installed in the mounting hole. Unscrewing the functional valve allows lubricating oil to be added into the gearbox, while tightening it seals the gearbox oil. Furthermore, when the pressure inside the gearbox exceeds a certain value, the pressure overcomes the spring force, and the high-pressure gas is released from the connection channel of the functional valve, ensuring the safe and stable operation of the oil-immersed gearbox.

[0039] Example 2, still as Figures 1 to 5 As shown, this is only one embodiment of the present utility model. Based on the first embodiment, in the tubular motor pressure relief structure of the present utility model, the mounting component 1 includes a mounting body 11 and a threaded component 12 disposed on the side of the mounting body 11 near the gearbox 3. The mounting hole 31 is provided with an internal thread for connecting with the threaded component 12.

[0040] Here, the threaded part 12 on the side of the mounting body 11 near the gearbox 3 can be engaged with the internal thread in the mounting hole 31. The mounting body 11 is an external hexagonal part, and an internal hex wrench can be used to turn the mounting body 11, thereby screwing the threaded part 12 into or out of the mounting hole 31.

[0041] Of course, a washer 121 is fitted on the outside of the threaded part 12. When the threaded part 12 is screwed into the mounting hole 31, the washer 121 is located at the connection between the mounting hole 31 and the threaded part 12, which further ensures the sealing of the threaded connection.

[0042] Example 3, still as Figures 1 to 5 As shown, this is only one embodiment of the present utility model. Based on the first embodiment, in the tubular motor pressure relief structure of the present utility model, the mounting body 11 is provided with a connecting inner cylinder 13 on the side away from the threaded part 12, and the blocking plate 21 is provided with a connecting outer cylinder 24 for connecting with the connecting inner cylinder 13 on the side close to the mounting part 1.

[0043] The connecting channel 14 passes through the mounting body 11, the threaded part 12, and the connecting inner cylinder 13.

[0044] In other words, the outer cylinder 24 is fitted to the outside of the inner cylinder 13 to complete the connection between the inner cylinder 13 and the outer cylinder 24, thereby completing the connection between the mounting part 1 and the blocking part 2.

[0045] The connection between the inner cylinder 13 and the outer cylinder 24 can be a threaded connection, a snap-fit ​​connection, or an interference fit connection.

[0046] Furthermore, the outer side of the connecting inner cylinder 13 is provided with a venting notch 131, and the connecting inner cylinder 13 is provided with a venting groove 132 for connecting the connecting channel 14 and the venting notch 131. In fact, the outer side of the connecting inner cylinder 13 is a ring structure with at least one cut plane, so that there is a gap between the connecting inner cylinder 13 and the connecting outer cylinder 24 as a venting notch 131. The venting notch 131 is directly connected to the outside, and the venting groove 132 on the connecting inner cylinder 13 can connect the connecting channel 14 and the venting notch 131. So once the blocking ball 22 fails to block the connecting channel 14, the high-pressure gas in the gearbox 3 will be discharged to the outside through the connecting channel 14, the venting groove 132 and the venting notch 131 in sequence, thus completing the depressurization of the gearbox 3.

[0047] Example 4, still as Figures 1 to 5 The illustration shown is only one embodiment of this utility model. Based on Embodiment 1, in the tubular motor pressure relief structure of this utility model, a blocking ring 141 is provided inside the connecting channel 14. The inner diameter of the blocking ball 22 is smaller than the inner diameter of the connecting channel 14, and the inner diameter of the blocking ball 22 is larger than the inner diameter of the blocking ring 141. The blocking ball 22 is located inside the connecting channel 14, and the outer diameter of the blocking ball 22 is slightly smaller than the inner diameter of the connecting channel 14. The elastic force of the spring 23 presses the blocking ball 22 against the blocking ring 141, thus blocking the connecting channel 14. When the high-pressure gas pushes the blocking ball 22 away from the blocking ring 141, the high-pressure gas can pass through the blocking ring 141 and leak out from the gap between the blocking ball 22 and the connecting channel 14.

[0048] Furthermore, an outwardly extending wing plate 211 is provided on the outer side of the blocking plate 21.

[0049] Therefore, rubber rings are provided between the extended wing plate 211 and the connecting outer cylinder 24, and between the connecting outer cylinder 24 and the mounting body 11, to protect the functional valve during transportation. The rubber rings are formed in a figure-eight shape, with two circular rubber rings respectively fitted between the extended wing plate 211 and the connecting outer cylinder 24 and between the connecting outer cylinder 24 and the mounting body 11. During transportation, the rubber rings can protect the functional valve from vibration and external force damage. It should be noted that when the functional valve is in use, the rubber rings must be removed so that the gas at the vent 131 can be discharged normally.

[0050] Finally, both the mounting component 1 and the baffle plate 21 are integrally molded parts. Integral molding parts are easy to manufacture, have high structural strength, and have a long service life.

[0051] This utility model discloses a tubular motor pressure relief structure that directly combines the oil filling port and pressure relief port of an oil-immersed gearbox into a single mounting hole. A functional valve is installed in the mounting hole. Unscrewing the functional valve allows lubricating oil to be added into the gearbox, while tightening it seals the gearbox oil. When the pressure inside the gearbox exceeds a certain value, the pressure overcomes the spring force, and the high-pressure gas is released from the connection channel of the functional valve, ensuring the safe and stable operation of the oil-immersed gearbox.

[0052] 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 tubular motor pressure relief structure, characterized by: The utility model provides a kind of function valve, including gear box (3) and the function valve being arranged at the end of the gear box (3) away from motor sleeve, the function valve includes mounting piece (1) and the blocking piece (2) being arranged at the end of the mounting piece (1) away from the gear box (3), the connecting channel (14) being arranged in the mounting piece (1) is communicated with the gear box (3), the blocking piece (2) includes blocking plate (21) and the blocking ball (22) being connected with the blocking plate (21) by spring (23), at least a part of the blocking ball (22) is located in the connecting channel (14).

2. A tubular motor pressure relief structure according to claim 1, wherein: The mounting piece (1) includes mounting body (11) and threaded part (12) being arranged at the side of the mounting body (11) close to the gear box (3), the mounting hole (31) is arranged on the gear box (3), and internal thread for being connected with the threaded part (12) is arranged in the mounting hole (31).

3. A tubular motor pressure relief structure according to claim 2, wherein: Threaded part (12) outside is equipped with washer (121).

4. A tubular motor pressure relief structure according to claim 2, wherein: The side of the mounting body (11) away from the threaded part (12) is provided with connecting inner cylinder (13), and the side of the blocking plate (21) close to the mounting piece (1) is provided with connecting outer cylinder (24) for being connected with the connecting inner cylinder (13).

5. A tubular motor pressure relief structure according to claim 4, wherein: Connecting inner cylinder (13) outside is provided with air release gap (131), and air release groove (132) for communicating the connecting channel (14) with air release gap (131) is arranged on the connecting inner cylinder (13).

6. A tubular motor pressure relief structure according to claim 2, wherein: The mounting body (11) is outer hexagonal piece.

7. A pipe motor pressure relief structure according to claim 2, wherein: Blocking ring (141) is arranged in the connecting channel (14), the inner diameter of the blocking ball (22) is less than the inner diameter of the connecting channel (14), and the inner diameter of the blocking ball (22) is greater than the inner diameter of the blocking ring (141).

8. A pipe motor pressure relief structure according to claim 4, wherein: Blocking plate (21) outside is provided with outer extension wing plate (211).

9. A tubular motor pressure relief structure according to claim 8, wherein: Rubber ring for playing the role of protection when function valve is transported is arranged between the outer extension wing plate (211) and the connecting outer cylinder (24) and between the connecting outer cylinder (24) and mounting body (11).

10. A tubular motor pressure relief structure as claimed in claim 1, wherein: The mounting piece (1) and blocking plate (21) are integrally formed.

Images