Waterproof motor with convenient output shaft connection
By designing a connecting sleeve and transmission components, the problem of cumbersome connection between the output shaft of the waterproof motor and other parts is solved, enabling tool-free quick connection and improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO DONGJIN ELETRICITY MASCH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-03
Smart Images

Figure CN224459521U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor technology, and in particular to a waterproof motor with convenient output shaft connection. Background Technology
[0002] In today's industrial production and daily life, electric motors are an indispensable power device, and their applications have extended to various fields. Among the many types of motors, waterproof motors occupy an irreplaceable position in special environments due to their unique protective performance. Whether it is underground pipe gallery drainage systems that are in a high-humidity environment for a long time, food processing workshops that are frequently exposed to water vapor, or outdoor fountain landscape facilities that need to withstand the test of wind and rain, waterproof motors ensure the continuous and stable operation of equipment under harsh working conditions with their excellent sealing and insulation properties, becoming a key technical support for ensuring the safety and efficiency of special scenario operations.
[0003] Most existing waterproof motors connect their output shafts to other components primarily using couplings. However, using couplings requires tools such as wrenches to tighten the bolts on the couplings. This process is not only cumbersome and time-consuming, but also more difficult to operate in some space-constrained situations. Utility Model Content
[0004] The purpose of this utility model is to solve the following shortcomings in the existing technology: most existing waterproof motors mainly use couplings to connect the output shaft to other components. However, when using couplings, tools such as wrenches are needed to tighten the bolts on the couplings. This process is not only cumbersome and time-consuming, but also more difficult to operate in some space-constrained situations. Therefore, a waterproof motor with convenient output shaft connection is proposed.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A waterproof motor with convenient output shaft connection includes a waterproof motor body, a connecting shaft, and an output shaft mounted on the waterproof motor body. One end of the output shaft is fitted with a connecting sleeve through an installation component, and one end of the connecting shaft is inserted into one end of the connecting sleeve. Keyways are symmetrically opened on the side of the connecting shaft.
[0007] The connecting sleeve has symmetrical mounting holes on its side. A positioning block is inserted into each of the two mounting holes. One end of the positioning block is inserted into the keyway. A right-angled trapezoidal block is fixedly installed at one end of each of the two positioning blocks. Mounting blocks are symmetrically fixedly installed on the side of the connecting sleeve. A push rod is horizontally slidably installed on each of the two mounting blocks. One end of the push rod slides in contact with the inclined surface of the right-angled trapezoidal block. The connecting sleeve is provided with a transmission assembly for driving the two push rods to move simultaneously.
[0008] Preferably, the surface of the connecting sleeve is partially threaded, and the transmission assembly includes an adjusting block threaded onto the connecting sleeve and a connecting ring rotatably mounted on the side of the adjusting block, with one end of each of the two push rods fixedly connected to the side of the connecting ring.
[0009] Preferably, a locking nut is threaded onto the connecting sleeve, and the side of the locking nut fits tightly against the side of the adjusting block.
[0010] Preferably, the mounting assembly includes a connecting flange fixedly sleeved on the output shaft and a plurality of connecting bolts. One end of the connecting sleeve has a plurality of threaded grooves, and one end of each of the plurality of connecting bolts is threaded into the plurality of threaded grooves.
[0011] Preferably, a limiting block is symmetrically fixedly installed at one end of the positioning block, and each of the two limiting blocks has a moving hole. A limiting rod is slidably installed in each of the two moving holes, and the limiting rod is fixedly installed on the connecting sleeve.
[0012] Preferably, a stop is fixedly installed at the end of the limiting rod away from the connecting sleeve, and the diameter of the stop is larger than the diameter of the moving hole.
[0013] The beneficial effects of this utility model are as follows:
[0014] When connecting the connecting shaft to the output shaft, insert one end of the connecting shaft into one end of the positioning sleeve, align the keyway with the positioning block, and through the cooperation of the transmission component, the push rod and the right-angled trapezoidal block, insert one end of the positioning block into the keyway, thereby completing the connection between the connecting shaft and the output shaft. The entire connection process does not require any additional tools and is simple and quick to operate. Attached Figure Description
[0015] Figure 1 A three-dimensional structural diagram of a waterproof motor with convenient output shaft connection proposed in this utility model;
[0016] Figure 2 A three-dimensional structural diagram of the output shaft, connecting sleeve, and connecting shaft;
[0017] Figure 3 This is a schematic diagram of a three-dimensional partial cross-sectional structure of the output shaft, connecting sleeve, and connecting shaft.
[0018] Figure 4 for Figure 2 Enlarged view of the structure at point A in the middle;
[0019] Figure 5 for Figure 3 Enlarged view of the structure at point B in the middle.
[0020] In the diagram: 1 Waterproof motor body, 2 Connecting shaft, 3 Output shaft, 4 Connecting sleeve, 5 Keyway, 6 Positioning block, 7 Right-angled trapezoidal block, 8 Mounting block, 9 Top rod, 10 Adjusting block, 11 Connecting ring, 12 Locking nut, 13 Connecting flange, 14 Connecting bolt, 15 Limiting block, 16 Limiting rod, 17 Stop block. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] Reference Figures 1-5 A waterproof motor with convenient output shaft connection includes a waterproof motor body 1, a connecting shaft 2, and an output shaft 3 mounted on the waterproof motor body 1. One end of the output shaft 3 is sleeved with a connecting sleeve 4 through an installation component. One end of the connecting shaft 2 is inserted into one end of the connecting sleeve 4. The connecting shaft 2 has keyways 5 symmetrically opened on its side. The connecting sleeve 4 has mounting holes symmetrically opened on its side. A positioning block 6 is inserted into each of the two mounting holes. One end of the positioning block 6 is inserted into the keyway 5. A right-angled trapezoidal block 7 is fixedly installed at one end of each of the two positioning blocks 6. Mounting blocks 8 are symmetrically fixedly installed on the side of the connecting sleeve 4. A push rod 9 is horizontally slidably installed on each of the two mounting blocks 8. One end of the push rod 9 slides in contact with the inclined surface of the right-angled trapezoidal block 7. The connecting sleeve 4 is provided with a transmission component for driving the two push rods 9 to move simultaneously.
[0023] The connecting sleeve 4 is installed on one end of the output shaft 3 of the waterproof motor via the mounting assembly. When the output shaft 3 is connected to the rotating shaft 2, one end of the rotating shaft 2 is inserted into one end of the connecting sleeve 4. The rotating shaft 2 is rotated so that the keyway 5 on the rotating shaft 2 is aligned with the positioning block 6. Then, the transmission assembly simultaneously drives the two push rods 9 to move towards the right-angled trapezoidal block 7. One end of the push rod 9 contacts the inclined surface of the right-angled trapezoidal block 7, while the positioning block 6 is slidably installed in the mounting hole. Under the action of the right-angled trapezoidal block 7, the positioning block 6 will move towards the keyway 5, and one end of the positioning block 6 will be inserted into the keyway 5. Under the action of the positioning block 6 and the keyway 5, the rotating shaft 2 is stably installed on one end of the connecting sleeve 4. The entire connection process does not require any additional tools and is simple and quick to operate.
[0024] The connecting sleeve 4 has a partial thread on its surface. The transmission assembly includes an adjusting block 10 threaded onto the connecting sleeve 4 and a connecting ring 11 rotatably mounted on the side of the adjusting block 10. One end of each of the two push rods 9 is fixedly connected to the side of the connecting ring 11. A locking nut 12 is threaded onto the connecting sleeve 4. The side of the locking nut 12 is tightly fitted to the side of the adjusting block 10. When it is necessary to move the two push rods 9 simultaneously, the adjusting block 10 is rotated by hand. Under the action of the thread, the adjusting block 10 drives the connecting ring 11 to move towards the rotating shaft 2. At the same time, the connecting ring 11 drives the two push rods 9 to move on the mounting block 8. When one end of the positioning block 6 is inserted into the keyway 5, the locking nut 12 is rotated to make one side of the locking nut 12 tightly fitted to one side of the adjusting block 10. Under the action of the locking nut 12, the adjusting block 10 can be prevented from loosening.
[0025] The mounting assembly includes a connecting flange 13 fixedly sleeved on the output shaft 3 and multiple connecting bolts 14. One end of the connecting sleeve 4 has multiple threaded grooves, and one end of each of the multiple connecting bolts 14 is threaded into the multiple threaded grooves. The connecting sleeve 4 is mounted on the connecting flange 13 by the multiple connecting bolts 14, which facilitates the installation and disassembly of the connecting sleeve 4.
[0026] A limiting block 15 is symmetrically fixedly installed on one end of the positioning block 6. Each of the two limiting blocks 15 has a moving hole, and a limiting rod 16 is slidably installed in each of the two moving holes. The limiting rod 16 is fixedly installed on the connecting sleeve 4. A stop block 17 is fixedly installed on the end of the limiting rod 16 away from the connecting sleeve 4. The diameter of the stop block 17 is larger than the diameter of the moving hole. The positioning block 6 is slidably installed on the limiting rod 16 through the limiting block 15, so that the positioning block 6 can move stably in the mounting hole. At the same time, the stop block 17 can prevent the positioning block 6 from falling out of the mounting hole.
[0027] In this invention, the connecting sleeve 4 is mounted on one end of the output shaft 3 of the waterproof motor via an installation assembly. When the output shaft 3 is connected to the rotating shaft 2, one end of the rotating shaft 2 is inserted into one end of the connecting sleeve 4. The rotating shaft 2 is rotated so that the keyway 5 on the rotating shaft 2 is aligned with the positioning block 6. Then, the transmission assembly simultaneously drives the two push rods 9 to move towards the right-angled trapezoidal block 7. One end of the push rod 9 contacts the inclined surface of the right-angled trapezoidal block 7, while the positioning block 6 is slidably installed in the mounting hole. Under the action of the right-angled trapezoidal block 7, the positioning block 6 will move towards the keyway 5, and one end of the positioning block 6 will be inserted into the keyway 5. Under the action of the positioning block 6 and the keyway 5, the rotating shaft 2 is stably installed at one end of the connecting sleeve 4. The entire connection process does not require additional tools and is simple and quick to operate.
[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A waterproof motor with convenient output shaft connection, comprising a waterproof motor body (1), a connecting shaft (2), and an output shaft (3) mounted on the waterproof motor body (1), characterized in that, One end of the output shaft (3) is fitted with a connecting sleeve (4) through an installation component, and one end of the connecting shaft (2) is inserted into one end of the connecting sleeve (4). The connecting shaft (2) has keyways (5) symmetrically opened on its side. The connecting sleeve (4) has symmetrical mounting holes on its side. A positioning block (6) is inserted into each of the two mounting holes. One end of the positioning block (6) is inserted into the keyway (5). A right-angled trapezoidal block (7) is fixedly installed at one end of each of the two positioning blocks (6). Mounting blocks (8) are symmetrically fixedly installed on the side of the connecting sleeve (4). A push rod (9) is horizontally slidably installed on each of the two mounting blocks (8). One end of the push rod (9) slides in contact with the inclined surface of the right-angled trapezoidal block (7). The connecting sleeve (4) is provided with a transmission assembly for driving the two push rods (9) to move simultaneously.
2. A water proof electric motor with easy output shaft connection as claimed in claim 1 wherein, The surface of the connecting sleeve (4) is partially threaded. The transmission assembly includes an adjusting block (10) threaded onto the connecting sleeve (4) and a connecting ring (11) rotatably mounted on the side of the adjusting block (10). One end of each of the two push rods (9) is fixedly connected to the side of the connecting ring (11).
3. A water-proof electric motor with easy output shaft connection according to claim 2, characterized in that, A locking nut (12) is threaded onto the connecting sleeve (4), and the side of the locking nut (12) is in close contact with the side of the adjusting block (10).
4. A water proof electric motor with easy output shaft connection as claimed in claim 1 wherein, The mounting assembly includes a connecting flange (13) fixedly sleeved on the output shaft (3) and a plurality of connecting bolts (14). One end of the connecting sleeve (4) is provided with a plurality of threaded grooves, and one end of the plurality of connecting bolts (14) is threaded into the plurality of threaded grooves respectively.
5. A water proof electric motor with easy output shaft connection as claimed in claim 1 wherein, One end of the positioning block (6) is symmetrically fixedly installed with a limiting block (15). Both limiting blocks (15) have moving holes, and both moving holes have a limiting rod (16) slidably installed in them. The limiting rod (16) is fixedly installed on the connecting sleeve (4).
6. A water proof electric motor with easy output shaft connection as claimed in claim 5 wherein, A stop (17) is fixedly installed at the end of the limiting rod (16) away from the connecting sleeve (4), and the diameter of the stop (17) is larger than the diameter of the moving hole.