Structurally robust underwater thruster

Abstract

This utility model discloses a structurally stable underwater thruster, including a body, a battery assembly, a front cover, and a waterproof ring. By setting a first right-angle structure at the tail end of the internal thread and a second right-angle structure at the head end of the internal thread, the external thread and internal thread are threaded together. The external thread is an annular rib. A third right-angle structure is set at the end of the annular rib near the battery assembly, and a limiting protrusion is set at the other end of the annular rib. The third right-angle structure cooperates with the first right-angle structure for limiting, and the limiting protrusion cooperates with the second right-angle structure for limiting. This underwater thruster can effectively limit the external and internal threads, facilitating the screwing of the front cover into place, preventing the front cover and body structure from becoming too loose, effectively enhancing the stability and sealing of the connection structure between the front cover and the body. Precise screwing endpoints avoid over-tightening, preventing thread stripping or deformation, reducing product defect rate, improving product quality, reducing assembly time, reducing worker hours, and meeting current needs.

Description

Technical Field

[0001] This utility model relates to the field of underwater propulsion technology, and in particular to a structurally stable underwater propulsion. Background Technology

[0002] With the continuous development of society and economy and the continuous improvement of people's living standards, more and more auxiliary tools are being manufactured and are constantly being innovated and improved. Underwater propulsion devices are auxiliary tools used by divers or underwater robots when they are working underwater.

[0003] An underwater propulsion device is a device specifically designed to generate thrust or propulsion in an underwater environment. It is primarily used to assist underwater movement, navigation, or water circulation. Its core working principle is to convert carried energy (such as batteries or fuel) into mechanical energy, which is then used to propel water through a specific propulsion mechanism (such as a propeller or jet pump system), thereby generating a reaction force to propel equipment or personnel forward. Based on the propulsion method, underwater propulsion devices can generally be divided into two types: propeller-driven underwater propulsion devices and jet-driven underwater propulsion devices.

[0004] Current underwater thrusters generally consist of a main body, a battery pack, and a front cover. The battery pack is housed in the mounting cavity of the main body, and the front cover is located at the front end of the main body. The front cover and main body are typically connected and secured by threads. While this structure is simple, during production, workers rely on torque feel to determine the tightening position when screwing the front cover onto the front end of the main body. If the screwing is not done correctly, the connection between the front cover and the main body can become too loose, resulting in an insufficiently secure and sealed connection. Over-tightening can cause the threads to strip or deform, leading to product damage, a high defect rate, poor product quality, and a short lifespan. Some manufacturers use additional testing tools to check if the front cover and main body are screwed on properly, but this involves more production steps, longer worker hours, inconvenience, higher production costs, and lower production efficiency, failing to meet current needs. Therefore, it is necessary to research a new technical solution to improve current underwater thrusters. Utility Model Content

[0005] In view of this, the present invention addresses the shortcomings of existing technologies, and its main objective is to provide a structurally stable underwater thruster. This effectively solves the problems of existing underwater thrusters where, during the production process, workers rely on torque feel to judge the tightening position when screwing the front cover onto the front of the main body. When the screwing is not tightened to the correct position, the structure of the front cover and the main body becomes too loose, resulting in an insufficiently stable and sealed connection. Over-tightening can easily cause the threads to strip or deform, leading to product damage, a high defect rate, poor product quality, and a short service life. Some manufacturers use additional testing tools to check if the front cover and the main body are screwed on properly, resulting in numerous production steps, long working hours, inconvenience, high production costs, and low production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A structurally robust underwater thruster includes a body, a battery assembly, a front cover, and a waterproof ring. The body has a forward-facing mounting cavity. The inner wall of the front end of the mounting cavity is provided with an internal thread. The tail end of the internal thread has a first right-angle structure, and the head end of the internal thread has a second right-angle structure. The battery assembly is disposed in the mounting cavity. The front cover is disposed at the front end of the body and covers the front opening of the mounting cavity. The rear end of the front cover is provided with an external thread, which is threaded to the internal thread. The external thread is an annular rib. The end of the annular rib near the battery assembly has a third right-angle structure, and the other end of the annular rib... A limiting protrusion is provided. This third right-angle structure cooperates with the first right-angle structure for limiting, and the limiting protrusion cooperates with the second right-angle structure for limiting. The cooperation between the third right-angle structure and the first right-angle structure, and the cooperation between the limiting protrusion and the second right-angle structure, can effectively limit the external and internal threads. Precise tightening endpoints prevent over-tightening, prevent thread stripping or deformation, and improve product quality. The limiting structure provides clear feedback on the tightening endpoint, eliminating the need for workers to rely on torque feel or additional testing tools, reducing assembly time, facilitating production assembly, improving production efficiency, and reducing labor costs. The waterproof ring is located between the front cover and the body.

[0008] As a preferred embodiment, the main body includes a housing, a protective cover, a motor, and a propeller. The front end of the housing is provided with the aforementioned mounting cavity. The protective cover is located at the rear end of the housing and has a cavity. The outer side of the protective cover is provided with multiple guide holes, all of which communicate with the cavity. The rear end face of the protective cover is provided with multiple through slots, all of which communicate with the cavity. The motor is located at the rear end of the housing and is situated within the cavity. The motor is electrically connected to the battery assembly. The propeller is located at the output end of the motor and is driven to rotate by the motor, and is also situated within the cavity.

[0009] As a preferred embodiment, a first indicator block is provided on the outer front surface of the main body, and a second indicator block is provided on the outer rear surface of the front cover. The second indicator block corresponds to the first indicator block and is standardly aligned with the first indicator block so that the internal thread of the main body and the external thread of the front cover are accurately positioned.

[0010] As a preferred embodiment, the battery assembly includes a bracket and multiple battery cells. The bracket is provided with multiple fixing slots, which are evenly spaced circumferentially. The multiple battery cells are respectively disposed in their corresponding fixing slots and fixed in place.

[0011] As a preferred embodiment, the battery cell has a cylindrical structure, and correspondingly, the fixing groove also has a cylindrical structure.

[0012] As a preferred embodiment, the front cover includes a main body and a battery cover. The rear end of the main body is provided with a mounting cavity. The battery cover is set in the mounting cavity by ultrasonic welding, which is simple to operate and has a stable connection structure. The aforementioned external thread is provided at the rear end of the battery cover.

[0013] As a preferred embodiment, the rear end of the main body is provided with an annular groove that communicates with the mounting cavity, and the front end of the battery cover is provided with an extension that is disposed in the annular groove and adapted to the annular groove.

[0014] As a preferred embodiment, the rear end of the front cover is provided with an annular positioning groove, which is located next to the external thread. The waterproof ring is set in the annular positioning groove for fixation, which effectively enhances the stability of the connection structure between the waterproof ring and the front cover and helps to improve the waterproof sealing performance of the product.

[0015] As a preferred embodiment, the annular positioning groove is located on the front side of the external thread.

[0016] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0017] An internal thread is provided on the inner wall of the front end of the mounting cavity of the main body. The tail end of this internal thread has a first right-angle structure, and the head end has a second right-angle structure. An external thread is provided at the rear end of the front cover, and this external thread engages with the internal thread for threaded connection. This external thread is an annular rib. A third right-angle structure is provided at one end of the annular rib near the battery assembly, and a limiting protrusion is provided at the other end of the annular rib. The third right-angle structure engages with the first right-angle structure for limiting, and the limiting protrusion engages with the second right-angle structure for limiting. A waterproof ring is placed between the front cover and the main body. This underwater thruster structure features the engagement of the third and first right-angle structures, and the limiting protrusion engages with the second right-angle structure for limiting. With its coordinated design, it effectively limits the external and internal threads, ensuring a fixed number of locking turns, making operations more standardized, and facilitating the proper tightening of the front cover. This prevents the front cover and body from becoming too loose, effectively enhancing the stability and sealing of the connection between the front cover and body. Precise tightening endpoints prevent over-tightening, preventing thread stripping or deformation, and protecting the product from damage. This significantly reduces product defect rates, improves product quality, and extends product lifespan. The limiting structure provides clear feedback on the tightening endpoint, eliminating the need for workers to rely on torque feel or additional testing tools. This reduces assembly time and production steps, decreases worker hours, facilitates production, lowers labor costs, improves production efficiency, and meets current needs.

[0018] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the present utility model;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of another preferred embodiment of the present utility model;

[0021] Figure 3 This is a cross-sectional view of a preferred embodiment of the present invention;

[0022] Figure 4 This is an exploded view of a preferred embodiment of the present invention;

[0023] Figure 5 This is an exploded view from another angle of a preferred embodiment of the present invention;

[0024] Figure 6 This is a three-dimensional structural diagram of the battery cover in a preferred embodiment of the present invention;

[0025] Figure 7 This is a three-dimensional structural diagram of the outer shell in a preferred embodiment of the present utility model;

[0026] Figure 8 This is a partial structural schematic diagram of the battery assembly in a preferred embodiment of the present invention;

[0027] Figure 9 yes Figure 3 An enlarged view of position A in the middle.

[0028] Explanation of reference numerals in the attached diagram:

[0029] 10. Main body; 11. Mounting cavity

[0030] 111. Internal thread; 112. First right-angle structure

[0031] 113. Second right-angle structure; 12. Outer shell.

[0032] 13. Protective cover; 131. Cavity

[0033] 132. Flow guide hole; 133. Through groove

[0034] 14. Electric motor 15. Propeller

[0035] 101, First indicator block 20, Battery assembly

[0036] 21. Bracket 211. Fixing slot

[0037] 22. Battery cell 30. Front cover

[0038] 31. External thread 311. Annular rib

[0039] 312. Third right-angle structure; 313. Limiting protrusion.

[0040] 32. Main body 321. Mounting cavity

[0041] 322, Annular groove; 33, Battery cover

[0042] 331, Extension 301, Second Indicator Block

[0043] 302, Annular positioning groove; 40, Waterproof ring. Detailed Implementation

[0044] Please refer to Figures 1 to 9 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a body 10, a battery assembly 20, a front cover 30, and a waterproof ring 40.

[0045] The main body 10 has a forward-facing mounting cavity 11. The inner wall of the front end of the mounting cavity 11 is provided with an internal thread 111. The tail end of the internal thread 111 is provided with a first right-angle structure 112, and the head end of the internal thread 111 is provided with a second right-angle structure 113. In this embodiment, the main body 10 includes a housing 12, a protective cover 13, a motor 14, and a propeller 15. The front end of the housing 12 is provided with the aforementioned mounting cavity 11. The protective cover 13 is located at the rear end of the housing 12 and has a cavity 131. The outer surface of the protective cover 13... The protective cover 13 is provided with multiple flow guide holes 132, all of which are connected to the cavity 131. The rear end face of the protective cover 13 is provided with multiple through slots 133, all of which are connected to the cavity 131. The motor 14 is located at the rear end of the outer shell 12 and is located in the cavity 131. The motor 14 is electrically connected to the battery assembly 20. The propeller 15 is located at the output end of the motor 14 and is driven to rotate by the motor 14. The propeller 15 is located in the cavity 131. A first indicator block 101 is provided on the outer front end face of the main body 10.

[0046] The battery assembly 20 is disposed in the mounting cavity 11. In this embodiment, the battery assembly 20 includes a bracket 21 and a plurality of battery cells 22. The bracket 21 is provided with a plurality of fixing slots 211, which are evenly spaced circumferentially. The plurality of battery cells 22 are respectively disposed in the corresponding fixing slots 211 and fixed together. Specifically, the battery cell 22 is a cylindrical structure, and correspondingly, the fixing slot 211 is also a cylindrical structure.

[0047] The front cover 30 is disposed at the front end of the body 10 and covers the front opening of the mounting cavity 11. The rear end of the front cover 30 is provided with an external thread 31, which is threadedly connected with an internal thread 111. The external thread 31 is an annular rib 311. One end of the annular rib 311 near the battery assembly 20 is provided with a third right-angle structure 312, and the other end of the annular rib 311 is provided with a limiting protrusion 313. The third right-angle structure 312 cooperates with the first right-angle structure 112 for limiting, and the limiting protrusion 313 cooperates with the second... The right-angle structure 113, the third right-angle structure 312, and the second right-angle structure 113, along with the limiting protrusion 313, effectively limit the external thread 31 and the internal thread 111. Precise tightening at the endpoint prevents over-tightening, stripping or deforming the threads, and improves product quality. The limiting structure provides clear feedback on the tightening endpoint, eliminating the need for workers to rely on torque feel or additional testing tools. This reduces assembly time, facilitates production assembly, improves production efficiency, and reduces labor costs. Cost; In this embodiment, a second indicator block 301 is provided on the outer rear end surface of the front cover 30. The second indicator block 301 corresponds to the first indicator block 101 and is standardly aligned with the first indicator block 101 to accurately limit the internal thread 111 of the body and the external thread 31 of the front cover 30; The front cover 30 includes a main body 32 and a battery cover 33. The rear end of the main body 32 is provided with a mounting cavity 321. The battery cover 33 is ultrasonically welded into the mounting cavity 321, which is simple to operate and connects. The structure is stable, and the external thread 31 is provided at the rear end of the battery cover 33; the rear end of the main body 32 is provided with an annular groove 322, which communicates with the mounting cavity 321; the front end of the battery cover 33 is provided with an extension 331, which is provided in the annular groove 322 and is adapted to the annular groove 322; the rear end of the front cover 30 is provided with an annular positioning groove 302, which is located beside the external thread 31; specifically, the annular positioning groove 302 is provided on the front side of the external thread 31.

[0048] The waterproof ring 40 is disposed between the front cover 30 and the body 10. In this embodiment, the waterproof ring 40 is disposed in the annular positioning groove 302 for fixation, which effectively enhances the stability of the connection structure between the waterproof ring 40 and the front cover 30 and helps to improve the waterproof sealing performance of the product.

[0049] The manufacturing and assembly process of this embodiment is described in detail below:

[0050] First, prepare the outer shell 12, protective cover 13, motor 14, propeller 15, battery assembly 20, front cover 30, and waterproof ring 40. Next, install the propeller 15 to the output end of the motor 14, install the motor 14 to the rear end of the outer shell 12, and install the protective cover 13 to the rear end of the outer shell 12 to cover the motor 14 and propeller 15, thus forming the body 10. Then, install the battery assembly 20 into the mounting cavity 11 of the body 10. Next, install the waterproof ring 40 into the annular positioning groove 302 of the front cover 30. Finally, screw the front cover 30 onto the front end of the body 10. The external thread 31 of the front cover 30 is threaded to the internal thread 111 of the body 10. The third right-angle structure 312 is engaged with the first right-angle structure 112 for limiting, and the limiting protrusion 313 is engaged with the second right-angle structure 113 for limiting. Tighten until it is in place. At this time, the second indicator block 301 on the front cover 30 corresponds to the first indicator block 101 on the body 10.

[0051] The key design feature of this utility model is:

[0052] An internal thread is provided on the inner wall of the front end of the mounting cavity of the main body. The tail end of this internal thread has a first right-angle structure, and the head end has a second right-angle structure. An external thread is provided at the rear end of the front cover, and this external thread engages with the internal thread for threaded connection. This external thread is an annular rib. A third right-angle structure is provided at one end of the annular rib near the battery assembly, and a limiting protrusion is provided at the other end of the annular rib. The third right-angle structure engages with the first right-angle structure for limiting, and the limiting protrusion engages with the second right-angle structure for limiting. A waterproof ring is placed between the front cover and the main body. This underwater thruster structure features the engagement of the third and first right-angle structures, and the limiting protrusion engages with the second right-angle structure for limiting. With its coordinated design, it effectively limits the external and internal threads, ensuring a fixed number of locking turns, making operations more standardized, and facilitating the proper tightening of the front cover. This prevents the front cover and body from becoming too loose, effectively enhancing the stability and sealing of the connection between the front cover and body. Precise tightening endpoints prevent over-tightening, preventing thread stripping or deformation, and protecting the product from damage. This significantly reduces product defect rates, improves product quality, and extends product lifespan. The limiting structure provides clear feedback on the tightening endpoint, eliminating the need for workers to rely on torque feel or additional testing tools. This reduces assembly time and production steps, decreases worker hours, facilitates production, lowers labor costs, improves production efficiency, and meets current needs.

[0053] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A structurally robust underwater thruster, characterized by: The device includes a main body, a battery assembly, a front cover, and a waterproof ring. The main body has a front-facing mounting cavity with an internal thread on the inner wall of its front end. The tail end of the internal thread has a first right-angle structure, and the head end of the internal thread has a second right-angle structure. The battery assembly is disposed in the mounting cavity. The front cover is disposed at the front end of the main body and covers the front opening of the mounting cavity. The rear end of the front cover has an external thread that engages with the internal thread. The external thread is an annular rib. One end of the annular rib near the battery assembly has a third right-angle structure, and the other end of the annular rib has a limiting protrusion. The third right-angle structure engages with the first right-angle structure for limiting, and the limiting protrusion engages with the second right-angle structure for limiting. The waterproof ring is disposed between the front cover and the main body.

2. The structurally robust underwater thruster of claim 1, wherein: The main body includes a shell, a protective cover, a motor, and a propeller. The front end of the shell has the aforementioned mounting cavity. The protective cover is located at the rear end of the shell and has a cavity. The outer side of the protective cover has multiple guide holes, all of which communicate with the cavity. The rear end face of the protective cover has multiple through slots, all of which communicate with the cavity. The motor is located at the rear end of the shell and is situated within the cavity. The motor is electrically connected to the battery assembly. The propeller is located at the output end of the motor and is driven to rotate by the motor. The propeller is also situated within the cavity.

3. The structurally robust underwater thruster of claim 1, wherein: A first indicator block is provided on the outer front surface of the main body, and a second indicator block is provided on the outer rear surface of the front cover, the second indicator block corresponding to the first indicator block.

4. The structurally robust underwater thruster of claim 1, wherein: The battery assembly includes a bracket and multiple battery cells. The bracket is provided with multiple fixing slots, which are evenly spaced around the circumference. The multiple battery cells are respectively disposed in the corresponding fixing slots and fixed in place.

5. The structurally robust underwater thruster of claim 4, wherein: The battery cell has a cylindrical structure, and correspondingly, the fixing slot also has a cylindrical structure.

6. The structurally robust underwater thruster of claim 1, wherein: The front cover includes a main body and a battery cover. The rear end of the main body is provided with a mounting cavity. The battery cover is set in the mounting cavity by ultrasonic welding. The external thread is provided at the rear end of the battery cover.

7. The structurally robust underwater thruster of claim 6, wherein: The rear end of the main body is provided with an annular groove, which communicates with the mounting cavity. The front end of the battery cover is provided with an extension, which is disposed in the annular groove and adapted to the annular groove.

8. The structurally robust underwater thruster of claim 1, wherein: The rear end of the front cover is provided with an annular positioning groove, which is located next to the external thread. The waterproof ring is set in the annular positioning groove and fixed in place.

9. The structurally robust underwater thruster of claim 8, wherein: The annular positioning groove is located on the front side of the external thread.

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