Non-standard threaded retainer ring mounting tool for fixing bearing and electric driving device thereof

By designing a custom-made non-standard threaded retaining ring installation tool and its electric drive device, the problems of easy slippage of the clamp tip and inconsistent installation were solved, realizing an automated and precise installation process, and improving efficiency and safety.

CN223998339UActive Publication Date: 2026-03-17BEIJING HEGUANG FEIYI ELECTROMECHANICAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-25
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

Existing non-standard threaded retaining ring installation tools suffer from problems such as the pliers tip easily slipping out, inconsistent installation firmness, and low efficiency of manual installation.

Method used

A non-standard threaded retaining ring installation tool was designed, comprising a main body and an electric drive unit. The main body is equipped with a snap-fit ​​structure to connect with the electric drive unit, and is equipped with a motor, reducer and torque sensor to achieve automated installation and monitor torque, ensuring installation firmness.

Benefits of technology

It effectively solves the problems of easy slippage of the pliers tips and inconsistent installation, realizes the automation and precision of the installation process, improves installation efficiency and safety, and expands the application range of the tool.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a non-standard threaded retainer ring installation tool and electric drive device for bearing fixation, which comprises a main body, the head end of the main body is provided with a clamping structure corresponding to a clamp hole of a non-standard threaded retainer ring, and the tail end of the main body is used for being connected with the electric drive device so as to receive rotation power. The clamping structure comprises an installation disc coaxially connected with the main body, and the installation disc is further provided with a clamping column matched with a clamp hole of the non-standard spiral check ring in a male-female mode. According to the utility model, a customized non-standard threaded check ring mounting tool is adopted, so that the problems that the plier tips are easy to slip and the mounting firmness is inconsistent are effectively solved. And under the synergistic effect of the electric drive device, automation of the installation process is achieved, and the installation efficiency is remarkably improved. Meanwhile, through the arrangement of the torque sensor, torque control in the installation process is ensured, it is guaranteed that the firmness of the product always meets the standard requirement, safety risks caused by too tight or too loose installation are avoided, and the installation accuracy and reliability are further enhanced.
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Description

Technical Field

[0001] This utility model relates to the technical field of achieving rapid fastening of threaded retaining rings for non-standard bearings. Specifically, it relates to an installation tool for non-standard threaded retaining rings for bearing fixing and its electric drive device. Background Technology

[0002] Non-standard threaded retaining rings are custom-designed fixing components tailored to the specific needs of a particular product or bearing structure. Their primary function is to provide axial positioning, ensuring the bearing structure remains stable during operation and preventing axial movement, thereby improving the bearing's stability and safety. Non-standard threaded retaining rings for bearings have a wide range of applications, suitable for various mechanical equipment with stringent requirements for high precision and stability, such as in the automotive, aerospace, and precision instrument industries.

[0003] Non-standard threaded retaining rings are made of high-strength materials, such as stainless steel or carbon steel, and their hardness and wear resistance are improved through heat treatment. They are designed as closed annular structures, with external threads on the outer circumference that match the internal threads of the shaft hole for specific products. Two through-holes (such as...) are located at opposite positions on the diameter of the annulus. Figure 1 (As shown).

[0004] When installing non-standard threaded retaining rings, it is essential to ensure the bearing surface is clean and free of foreign objects to avoid affecting the tightening effect of the threaded retaining ring. Simultaneously, appropriate threaded retaining rings and corresponding installation tools should be selected based on the bearing's specifications and dimensions, and the threaded retaining ring should be tightened into the shaft hole according to the specified helical direction to ensure the bearing structure is secure and stable.

[0005] Currently, the installation of non-standard threaded retaining rings still relies on ordinary bearing retaining ring installation tools—circlip pliers (such as...). Figure 2 (As shown). During operation, use the two tips of the snap ring pliers to insert into the two plier holes of the non-standard bearing threaded retaining ring, and then rotate it to the designated position.

[0006] However, in practical applications, the applicant discovered the following problems with manually installing non-standard threaded retaining rings using snap ring pliers:

[0007] 1. Since snap ring pliers are a general-purpose tool, the pliers tip may slip out of the pliers hole when installing the spiral retaining ring, which may damage the appearance of the product.

[0008] 2. After manual installation, the firmness of the retaining ring is difficult to maintain consistently, which may pose a potential safety risk;

[0009] 3. In the mass production stage, manual installation is inefficient and makes it difficult to conduct accurate quantitative inspection of the products. Utility Model Content

[0010] The purpose of this utility model is to provide a non-standard threaded retaining ring installation tool for bearing fixing and its electric drive device, so as to solve the problems of easy slippage of the clamp tip, inconsistent installation firmness, and low efficiency of manual installation in the existing non-standard threaded retaining ring installation tools.

[0011] To achieve the above objectives, the present invention first provides the following technical solution:

[0012] A non-standard threaded retaining ring installation tool for bearing fixing, the key features of which are: a main body, the first end of the main body having a snap-fit ​​structure corresponding to the clamp hole of the non-standard threaded retaining ring, and the end of the main body being used to connect to an electric drive device to receive rotational power.

[0013] Furthermore, the snap-fit ​​structure includes a mounting plate coaxially connected to the main body, and the mounting plate is also provided with snap pins that mate with the male and female of the non-standard spiral retaining ring clamp holes.

[0014] Furthermore, the locking post, the mounting plate, and the main body are integrally formed.

[0015] Furthermore, the main body adopts a cylindrical structure, and its end is connected to an electric drive device through a connector or interface.

[0016] Furthermore, the end of the main body is machined into a hexagonal prism structure, and this hexagonal prism structure serves as a connector for the electric drive device.

[0017] Furthermore, a through mounting hole is provided in the radial direction of the main body, which is used to insert a manual crank to achieve manual installation when an electric drive device cannot be used.

[0018] This utility model also discloses an electric drive device, the key feature of which is: a housing with a handle, in which a motor, a reducer, an output shaft, and a torque sensor are integrated; the motor provides rotational power, which is then transmitted to the output shaft after being reduced in speed and increased in torque by the reducer; the output shaft has a connecting part that connects to the end of the non-standard threaded retaining ring installation tool body described above; the torque sensor is integrated into the reducer or the output shaft to monitor the torque during the tightening process in real time, and when the torque reaches a predetermined threshold, the power output of the motor is cut off.

[0019] Furthermore, a trigger is also provided on the housing, which is connected to the control circuit of the motor to turn on the motor.

[0020] Furthermore, a trigger is also provided on the housing, which is connected to the control circuit of the motor to turn on the motor.

[0021] Compared with the prior art, the significant advantages of this utility model are:

[0022] This utility model employs a customized non-standard threaded retaining ring installation tool, effectively solving the problems of easy slippage of the pliers tips and inconsistent installation firmness. With the synergy of the electric drive unit, the installation process is automated, significantly improving installation efficiency. Simultaneously, the configuration of a torque sensor ensures torque control during installation, guaranteeing that the product's firmness always meets standard requirements and avoiding safety risks caused by excessively tight or loose installation, further enhancing installation accuracy and reliability. Furthermore, the design of this installation tool and its electric drive unit fully considers the convenience and flexibility of actual operation. For example, the hexagonal prism structure at the end of the main body facilitates quick connection to power tools, and the manual crank allows for smooth installation even without an electric drive unit, greatly expanding the tool's application range and practicality. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a non-standard threaded retaining ring in the prior art;

[0025] Figure 2 This is a schematic diagram of the structure of a snap ring pliers in the prior art;

[0026] Figure 3 This is a perspective view of the non-standard threaded retaining ring installation tool for bearing fixing in Example 1;

[0027] Figure 4 This is a bottom view of the non-standard threaded retaining ring installation tool for bearing fixing in Example 1;

[0028] Figure 5 This is a top view of the non-standard threaded retaining ring installation tool for bearing fixing in Example 1;

[0029] Figure 6 This is a front view of the non-standard threaded retaining ring installation tool for bearing fixing in Example 1;

[0030] Figure 7 This is a schematic diagram of the electric drive device in Example 2;

[0031] The numbers in the diagram are: 1-Main body, 2-Snap-fit ​​structure, 201-Mounting plate, 202-Snap-fit ​​post, 101-Connector, 102-Mounting hole, 3-Housing, 4-Motor, 5-Reducer, 6-Torque sensor, 7-Output shaft, 701-Connecting part, 8-Trigger trigger, 9-Battery, 10-Control circuit. Detailed Implementation

[0032] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0033] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] Figure 3 and Figure 6 The first embodiment of the present invention is shown: a non-standard threaded retaining ring installation tool for bearing fixing, including a main body 1, wherein the first end of the main body 1 is provided with a snap-fit ​​structure 2 corresponding to the clamp hole of the non-standard threaded retaining ring, and the end of the main body 1 is used to connect an electric drive device to receive rotational power.

[0035] like Figure 4 and Figure 6 As shown, in a specific implementation, the snap-fit ​​structure 2 includes a mounting plate 201 coaxially connected to the main body 1. The mounting plate 201 also has a snap-fit ​​post 202 that mates with the male and female holes of a non-standard spiral retaining ring pliers. To facilitate tool processing and ensure the structural strength of the tool, the snap-fit ​​post 202, the mounting plate 201, and the main body 1 are integrally formed. Furthermore, to ensure the tool can stably transmit rotational power, the main body 1 is made of high-strength alloy material to ensure it is not easily deformed or damaged during long-term use. In addition, the surface of the main body 1 undergoes special treatment to increase its corrosion resistance and wear resistance, further extending the tool's service life.

[0036] from Figure 3 and Figure 5As can be seen, in this embodiment, the main body 1 adopts a cylindrical structure, and its end is connected to the electric drive device through a connector 101 or interface. The end of the main body 1 is machined into a hexagonal prism structure, and this hexagonal prism structure serves as the connector 101 for connecting to the electric drive device. This design not only facilitates a quick and stable connection with the electric drive device, but also effectively prevents loosening or detachment during rotation. Simultaneously, the hexagonal prism structure also allows the operator to manually rotate the device using tools such as torque wrenches when necessary, increasing the tool's flexibility and practicality. In other embodiments, the connector 101 can also be a threaded connector 101, connecting to the electric drive device through a threaded engagement to improve the stability and reliability of the connection. Specifically, to facilitate tool operation in confined spaces, the length and diameter of the main body 1 can be flexibly designed according to actual needs, ensuring that the tool can smoothly enter and act on the non-standard threaded retaining ring used for bearing fixing.

[0037] During installation, the operator simply aligns the snap-fit ​​structure 2 of the installation tool with the pliers hole of the non-standard threaded retaining ring, and then uses the electric drive to provide rotational power to easily complete the installation of the retaining ring. Due to the male-female mating design of the snap-fit ​​structure 2 and the pliers hole, the problem of the pliers tip easily slipping out is effectively avoided, improving the accuracy and safety of the installation.

[0038] Furthermore, this invention also considers various situations that may arise during actual operation. For example, in cases where an electric drive device cannot be used, the operator can manually install the tool by inserting a manual crank into the mounting hole 102 radially opened in the main body 1. This design not only ensures the normal use of the tool in special circumstances but also improves the tool's emergency response capability and adaptability.

[0039] Figure 7 A second embodiment of the present invention is shown: an electric drive device, including a housing 3 with a handle, wherein a motor 4, a reducer 5, an output shaft 7 and a torque sensor 6 are integrated in the housing 3. The motor 4 provides rotational power, which is transmitted to the output shaft 7 after being reduced in speed and increased in torque by the reducer 5. The output shaft 7 has a connecting part 701 that connects to the end of the non-standard threaded retaining ring installation tool body 1 described above. The torque sensor 6 is integrated into the reducer 5 or the output shaft 7 and is used to monitor the torque during the tightening process in real time. When the torque reaches a predetermined threshold, the power output of the motor 4 is cut off.

[0040] Furthermore, to ensure stable operation of the electric drive unit in various environments, a battery 9 is also installed inside the housing 3 to provide power to the motor 4. The design of the battery 9 eliminates the limitation of the electric drive unit to an external power source, thereby improving the portability and flexibility of the tool. In addition, the battery level of the battery 9 can be displayed in real time via an indicator light on the housing 3, allowing operators to easily monitor the battery status and recharge it promptly, avoiding insufficient power during operation. Specifically, a trigger 8 is also provided on the housing 3, which is connected to the control circuit 10 of the motor 4 to start the motor 4.

[0041] In operation, the operator can connect the output shaft 7 of the electric drive unit to the end of the main body 1 of the installation tool by holding the handle on the housing 3. Then, align the snap-fit ​​structure 2 with the clamp hole of the non-standard threaded retaining ring and gently press the trigger 8. The motor 4 will then start and provide rotational power. As the motor 4 rotates, the reducer 5 reduces the power and increases the torque before transmitting it to the output shaft 7, thereby driving the installation tool to rotate and install. During the installation process, the torque sensor 6 monitors the torque in real time during tightening. When the torque reaches a predetermined threshold, the motor 4 will automatically cut off the power output, thereby ensuring the firmness and accuracy of the installation.

[0042] In this embodiment, a battery 9 is also provided inside the housing 3, which provides power to the motor 4. The battery 9 is preferably a rechargeable lithium battery for long-term use and easy recharging. Furthermore, a charging interface is provided on the housing 3, which is electrically connected to the battery 9 for charging. This design not only improves the portability and endurance of the electric drive device but also allows operators to conveniently charge the tool anytime and anywhere, ensuring continuous and efficient work. In addition, to further improve the safety and stability of the electric drive device, key components such as the motor 4, reducer 5, output shaft 7, and torque sensor 6 are all made of high-quality materials and have undergone rigorous testing and verification to ensure stable and reliable operation during use. Simultaneously, the design of the housing 3 also fully considers heat dissipation and protection performance to prevent malfunctions or safety accidents caused by overheating or external damage.

[0043] In summary, this utility model employs a customized non-standard threaded retaining ring installation tool, effectively solving the problems of easy slippage of the pliers tips and inconsistent installation firmness. With the synergistic effect of the electric drive device, the installation process is automated, significantly improving installation efficiency. Simultaneously, the configuration of the torque sensor 6 ensures torque control during installation, guaranteeing that the product's firmness always meets standard requirements, avoiding safety risks caused by excessively tight or loose installation, and further enhancing the accuracy and reliability of the installation. Furthermore, the design of this installation tool and its electric drive device fully considers the convenience and flexibility of actual operation. For example, the hexagonal prism structure of the main body 1 facilitates quick connection to power tools, and the manual crank allows for smooth installation even without an electric drive device, greatly expanding the tool's application range and practicality.

[0044] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-standard thread retainer installation tool for bearing retention, characterized by: The application relates to a non-standard screw thread retainer installation tool, which comprises a main body, the front end of the main body is provided with a clamping structure corresponding to the jaw hole of the non-standard screw thread retainer, and the tail end of the main body is used for connecting an electric driving device to receive rotary power.

2. The non-standard thread retainer installation tool for bearing fixation according to claim 1, characterized in that: The clamping structure comprises a mounting disc coaxially connected with the main body, and a clamping column matched with the jaw hole of the non-standard screw thread retainer is further arranged on the mounting disc.

3. The non-standard thread retainer installation tool for bearing retention according to claim 2, wherein: The clamping column, the mounting disc and the main body are integrally formed.

4. The non-standard thread retainer installation tool for bearing fixation according to any one of claims 1 to 3, characterized in that: The main body adopts a cylindrical structure, and the tail end of the main body is connected with the electric driving device through a joint or an interface.

5. The non-standard thread retainer installation tool for bearing retention according to claim 4, wherein: The tail end of the main body is processed into a hexagonal prism structure, and the hexagonal prism structure is used as a joint for connecting the electric driving device.

6. The non-standard thread retainer installation tool for bearing fixation according to claim 1 or 5, characterized in that: A through mounting hole is arranged on the main body in the radial direction, and the mounting hole is used for inserting a manual rocker to realize manual installation when the electric driving device cannot be used.

7. An electric drive device characterized by comprising: The application relates to a non-standard screw thread retainer installation tool, which comprises a main body, the front end of the main body is provided with a clamping structure corresponding to the jaw hole of the non-standard screw thread retainer, and the tail end of the main body is used for connecting an electric driving device to receive rotary power.

8. The electrical drive device of claim 7, characterized in that: The clamping structure comprises a mounting disc coaxially connected with the main body, and a clamping column matched with the jaw hole of the non-standard screw thread retainer is further arranged on the mounting disc.

9. The electric drive device according to claim 7 or 8, characterized in that: The clamping column, the mounting disc and the main body are integrally formed. The main body adopts a cylindrical structure, and the tail end of the main body is connected with the electric driving device through a joint or an interface. The tail end of the main body is processed into a hexagonal prism structure, and the hexagonal prism structure is used as a joint for connecting the electric driving device. A through mounting hole is arranged on the main body in the radial direction, and the mounting hole is used for inserting a manual rocker to realize manual installation when the electric driving device cannot be used. The application relates to a non-standard screw thread retainer installation tool, which comprises a main body, the front end of the main body is provided with a clamping structure corresponding to the jaw hole of the non-standard screw thread retainer, and the tail end of the main body is used for connecting an electric driving device to receive rotary power. The clamping structure comprises a mounting disc coaxially connected with the main body, and a clamping column matched with the jaw hole of the non-standard screw thread retainer is further arranged on the mounting disc. The clamping column, the mounting disc and the main body are integrally formed. The main body adopts a cylindrical structure, and the tail end of the main body is connected with the electric driving device through a joint or an interface. The tail end of the main body is processed into a hexagonal prism structure, and the hexagonal prism structure is used as a joint for connecting the electric driving device. A through mounting hole is arranged on the main body in the radial direction, and the mounting hole is used for inserting a manual rocker to realize manual installation when the electric driving device cannot be used.