Installation device and installation method of self-locking check ring

Abstract

The invention provides a mounting device and method for a self-locking check ring, and relates to the technical field of vehicles, the mounting device for the self-locking check ring has a first working state and a second working state, and the mounting device comprises a guide column, a positioning part and a press fitting assembly; the guide column is used for penetrating through and expanding the self-locking check ring, and in the first working state, the positioning component is connected to the guide column and matched with the guide column so as to limit the self-locking check ring to rotate around the axis direction of the guide column; in the second working state, the positioning component is separated from the guide column, and the press-fitting assembly is connected to the guide column and used for press-fitting the self-locking check ring to the target component; the press-fitting assembly is provided with a press-fitting face used for press-fitting of the self-locking check ring, an avoiding notch is formed in the press-fitting face, and the projection of the self-locking check ring limiting piece can be located in the avoiding notch in the axis direction. The technical problem of how to avoid failure of the self-locking check ring is solved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically to a device and method for installing a self-locking retaining ring. Background Technology

[0002] Self-locking retaining rings, as a key mechanical fastening element, are widely used in various rotating machinery, transmission systems and bearing devices, mainly for axial positioning and preventing axial movement of components.

[0003] In the prior art 1, the installation method of the self-locking retaining ring is to place the self-locking retaining ring on a conical plug aligned with the shaft, and to expand it along the conical surface and slide it into the groove of the shaft by the plunger; for the inner ring, it is placed in a conical sleeve aligned with the hole, and to contract it along the conical surface and slide it into the groove of the hole by the plunger.

[0004] In prior art 2, firstly, the self-locking retaining ring is fitted onto the outer wall of the second auxiliary component, and a card is inserted into the two slots of the self-locking retaining ring. Then, the third auxiliary component is placed on top of the second auxiliary component. By pushing the third auxiliary component with the pressing member, the self-locking retaining ring on the second auxiliary component is pressed downwards and into the first auxiliary component located below, completing the installation.

[0005] In the existing technology, the self-locking retaining ring needs to be installed by press-fitting. However, during the press-fitting process, the limiting component of the retaining ring may yield and deform, which may lead to the failure of the self-locking retaining ring. Summary of the Invention

[0006] The purpose of this invention is to solve the technical problem of how to avoid the failure of the self-locking retaining ring.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] This application provides an installation device for a self-locking retaining ring. The installation device has a first working state and a second working state. The installation device includes a guide post, a positioning component, and a pressing assembly. The guide post is used to pass through and expand the self-locking retaining ring. In the first working state, the positioning component is connected to the guide post and cooperates with the guide post to restrict the rotation of the self-locking retaining ring around the axis of the guide post. In the second working state, the positioning component is separated from the guide post, and the pressing assembly is connected to the guide post. The pressing assembly is used to press the self-locking retaining ring onto the target component. The pressing assembly has a pressing surface for pressing the self-locking retaining ring, and a clearance notch is provided on the pressing surface. Along the axial direction, the projection of the self-locking retaining ring limiting component can be located within the clearance notch.

[0009] Based on the aforementioned technical features, in its first working state, the installation device, through the cooperation of the guide post and the positioning component, restricts the rotation of the self-locking retaining ring along the axial direction, thereby fixing the limiting component of the self-locking retaining ring in a fixed position. In its second working state, the installation device separates the positioning component from the guide post and connects the pressing assembly to the guide post, allowing the pressing surface of the pressing assembly to press the self-locking retaining ring. Because the limiting component of the self-locking retaining ring is fixed in position, during the installation of the pressing assembly, the projection of the limiting component in the axial direction can be positioned within the projection of the clearance notch in the axial direction. During the pressing process of the self-locking retaining ring by the pressing assembly, the pressing surface contacts the self-locking retaining ring and provides pressing force. Due to the existence of the clearance notch, the limiting component is avoided, preventing the pressing assembly from directly applying pressing force to the limiting component and effectively preventing yielding deformation of the limiting component.

[0010] In some embodiments, the positioning component includes: a positioning ring, a first limiting structure disposed on the positioning ring, and a second limiting structure; the positioning ring is used to carry a self-locking retaining ring, the first limiting structure is used to restrict the self-locking retaining ring from rotating around the axis; the second limiting structure is disposed on the positioning ring, and the guide post is provided with a third limiting structure. In the first working state, the positioning ring is sleeved on the guide post, and the third limiting structure cooperates with the second limiting structure to limit the positioning ring from rotating around the axis.

[0011] Based on the above technical features, the first limiting structure, the second limiting structure and the third limiting structure work together to keep the limiting component of the self-locking retaining ring in a known fixed position. When the operator uses the pressing assembly to press the self-locking retaining ring, the operator can quickly know the position of the limiting component so as to align the clearance notch with the limiting component.

[0012] In some embodiments, the positioning ring has a bearing surface for carrying a self-locking retaining ring, and a first limiting structure is disposed on the bearing surface, at least a portion of which can be located within the limiting groove of the self-locking retaining ring.

[0013] Based on the above technical features, by enabling at least a portion of the first limiting structure to be located within the limiting groove of the self-locking retaining ring, the first limiting structure can cooperate with the limiting groove of the self-locking retaining ring to provide stable limiting for the self-locking retaining ring. The structure is simple and the operation is convenient.

[0014] In some embodiments, the second limiting structure includes a protrusion structure disposed on the inner circumferential surface of the positioning ring; the third limiting structure includes a first recess structure disposed on the outer circumferential surface of the guide post. In the first working state, at least a portion of the protrusion structure is located within the first recess structure to limit the positioning ring from rotating in the direction of the circumferential axis.

[0015] Based on the above technical features, during the installation of the positioning ring, the positioning ring can be quickly installed and positioned by means of the protruding structure and the first recessed structure, thereby achieving the rapid installation and positioning of the limiting component.

[0016] In some embodiments, the positioning ring further includes: a first annular portion and a second annular portion; the first annular portion is provided with a bearing surface; the second annular portion is connected to the periphery of the first annular portion and is disposed around the bearing surface.

[0017] Based on the above technical features, it is possible to increase the convenience for operators to install the self-locking retaining ring on the positioning component, so as to prevent the self-locking retaining ring from separating from the positioning component due to external forces.

[0018] In some embodiments, the second annular portion has a through-hole structure extending radially along the second annular portion; the mounting device further includes a misalignment component, which can pass through the through-hole structure and can be located between two adjacent layers of retaining rings of the self-locking retaining ring, so that the limiting member and the limiting groove of the self-locking retaining ring are spaced apart along the axial direction.

[0019] Based on the above technical features, the through-hole structure and misaligned components enable the limiting component and the limiting groove of the self-locking retaining ring to be spaced apart along the axial direction, preventing the limiting component from entering the limiting groove during the pressing process, which would cause the self-locking retaining ring to self-lock.

[0020] In some embodiments, the guide post further includes: a first guide post segment, a second guide post segment, and a third guide post segment; the first guide post segment has a first end and a second end, and the radial dimension of the first guide post segment gradually increases from the first end to the second end; the second guide post segment is disposed at the first end of the first guide post segment, and a third limiting structure is disposed at the second guide post segment; in a first working state, a positioning ring is sleeved on the second guide post segment, and a self-locking retaining ring is sleeved on the first end; the third guide post segment is disposed at the second end of the first guide post segment, and the radial dimension of the third guide post segment is the same as the radial dimension of the second end of the first guide post segment.

[0021] Based on the above technical features, the first guide column section can effectively expand the self-locking retaining ring, and the second and third guide column sections have constant radial dimensions, which can provide sufficient space for the installation and pressing of the self-locking retaining ring, thereby increasing the stability of the installation device.

[0022] In some embodiments, the press-fit assembly includes: a press-fit body and a fourth limiting structure; the press-fit body has a press-fit surface, and the press-fit body is further provided with a second recessed structure recessed from the press-fit surface along the axial direction; the fourth limiting structure is disposed on the inner wall surface of the second recessed structure; the guide post has a fifth limiting structure, and in the second working state, the guide post is located in the second recessed structure, and the fourth limiting structure and the fifth limiting structure cooperate to limit the press-fit body from rotating about the axial direction.

[0023] Based on the above technical features, the first, second, third, fourth, and fifth limiting structures work together to arrange the limiting components and clearance notches of the self-locking retaining ring along the axial direction, which facilitates the blind installation of the installation device and the self-locking retaining ring by the operator and effectively increases the pressing efficiency of the self-locking retaining ring.

[0024] In some embodiments, the second recessed structure further has a bottom wall surface, which is disposed opposite to the pressing surface, and the fourth limiting structure is connected to the bottom wall surface; the fifth limiting structure includes a limiting hole extending along the axial direction, which is spaced apart from the axis of the guide post, and in the second working state, the fourth limiting structure is located in the limiting hole.

[0025] Based on the above technical features, the limiting hole and the guide post are spaced apart so that when the fourth limiting structure is located in the limiting hole, it can restrict the rotation of the press-fitting body, resulting in a simple and stable structure.

[0026] In some embodiments, the fourth limiting structure includes a guide rod and a limiting strip, the guide rod being connected to the bottom wall surface and the limiting strip being connected to the outer peripheral surface of the guide rod; the fifth limiting structure also includes a guide hole, the guide hole and the limiting hole being arranged radially along the guide post and communicating with each other, in the second working state, the limiting strip is located in the limiting hole and the guide rod is located in the guide hole.

[0027] Based on the above technical features, the fourth and fifth limiting structures can not only restrict the rotation of the pressing body, but also guide the pressing body, thereby increasing the ease of operation and stability of the installation device.

[0028] In some embodiments, the guide hole includes a guide section and a clearance section. The diameter of the guide section is adapted to the radial dimension of the guide rod. The limiting hole and the guide section are spaced apart along the radial direction of the guide post. The clearance section is located on the side of the guide section away from the bottom wall surface, and the diameter of the clearance section is larger than the diameter of the guide section.

[0029] Based on the above technical features, when the installation position of the self-locking retaining ring of the target component has a structure that interferes with the guide post, the structure that interferes with the guide post can be avoided and blocked by the avoidance section of the guide hole, so that the self-locking retaining ring can be smoothly installed on the target component.

[0030] In some embodiments, the press-fit assembly further includes an elastic element that is sleeved on the guide rod and located between the bottom wall surface and the guide post.

[0031] Based on the above technical features, during the pressing process, the pressing body and the guide post squeeze the elastic element to generate elastic force, thereby offsetting the inertial force of the pressing body during the pressing process and reducing the yield deformation of the self-locking retaining ring caused by inertial force during the pressing process.

[0032] This application also provides a method for installing a self-locking retaining ring. This method uses the self-locking retaining ring installation device provided in this application. The method includes: placing the self-locking retaining ring on a positioning component of the self-locking retaining ring installation device; fitting the positioning component with the self-locking retaining ring onto a guide post to restrict the self-locking retaining ring from rotating about its axis; separating the positioning component from the guide post and installing the pressing assembly of the self-locking retaining ring installation device onto the guide post, so that the projection of the self-locking retaining ring limiting member along the axis is located within the clearance notch; placing the guide post on a target component and driving the pressing surface to push the self-locking retaining ring to install the self-locking retaining ring onto the target component. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the self-locking retaining ring of this application;

[0034] Figure 2 This is a schematic diagram of the installation device for the self-locking retaining ring of this application;

[0035] Figure 3 This is a schematic diagram of the guide post and positioning components of the self-locking retaining ring mounting device of this application;

[0036] Figure 4 This is a schematic diagram of the self-locking retaining ring installation device press-fit assembly for pressing the self-locking retaining ring according to this application;

[0037] Figure 5 An exploded view of the positioning component of the mounting device for the self-locking retaining ring and the self-locking retaining ring of this application;

[0038] Figure 6 An exploded view of the positioning components and guide post of the mounting device for the self-locking retaining ring of this application;

[0039] Figure 7 This is a cross-sectional view of the positioning component of the mounting device for the self-locking retaining ring and the self-locking retaining ring of this application;

[0040] Figure 8 This is a structural diagram of the positioning component, the self-locking retaining ring, and the misalignment component of the mounting device for the self-locking retaining ring of this application;

[0041] Figure 9 For this application Figure 2 A partial schematic diagram of the H section;

[0042] Figure 10 This is a cross-sectional view of the positioning component, the self-locking retaining ring, and the misalignment component of the mounting device for the self-locking retaining ring of this application;

[0043] Figure 11 This is a cross-sectional view of the positioning components, the self-locking retaining ring, and the guide post of the mounting device for the self-locking retaining ring of this application;

[0044] Figure 12 This is an exploded view of the pressing assembly, guide post, and self-locking retaining ring of the self-locking retaining ring installation device of this application;

[0045] Figure 13 This is a cross-sectional view of the mounting device press-fit assembly, guide post, and self-locking retaining ring of the self-locking retaining ring of this application;

[0046] Figure 14 This is a partial schematic diagram of the mounting device for the self-locking retaining ring of this application installed on the target component.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Guide post; 101. Third limiting structure; 102. First guide post section; 103. Second guide post section; 104. Third guide post section; 105. Fifth limiting structure; 1051. Guide hole; 10511. Guide section; 10512. Clearance section; 1052. Limiting hole;

[0049] 2. Positioning component; 201. Positioning ring; 2011. First annular portion; 2012. Second annular portion; 20121. Through hole structure; 202. First limiting structure; 203. Second limiting structure; 204. Limiting cover;

[0050] 3. Press-fit assembly; 301. Clearance notch; 302. Press-fit body; 3021. Second recessed structure; 303. Fourth limiting structure; 3031. Guide rod; 3032. Limiting strip; 304. Elastic element;

[0051] 4. Self-locking retaining ring; 401. Limiting groove; 402. Limiting component;

[0052] 5. Misaligned component; 501. Insertion end;

[0053] 6. Target component; 601. Rotor gear shaft;

[0054] A. Axial direction; B. Bearing surface; C. First contact surface; D. Second contact surface; E. Limiting surface. Detailed Implementation

[0055] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0056] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0057] A self-locking retaining ring is a fastener with an elastic structure, primarily used for axial positioning and fixing of mechanical parts within shafts or holes, preventing axial movement or detachment during operation. It relies on its own elastic force to tightly adhere to the sidewall of the shaft or hole, achieving a reliable self-locking function and maintaining stability even in vibrating or impact-prone working environments. Self-locking retaining rings are widely used in vehicles, motors, transmissions, construction machinery, and various mechanical equipment. They are easy to install, requiring no additional threads or nuts, effectively simplifying assembly processes, reducing component weight, and improving connection reliability. For example, the target component can be a motor shaft or a load-bearing shaft of an automotive transmission; this application does not limit the specific target component to which the self-locking retaining ring is to be installed.

[0058] like Figure 1 As shown, in some possible embodiments, the self-locking retaining ring 4 structure can be formed by two layers of stacked retaining rings formed by spirally winding a flat metal wire. A limiting groove 401 is provided on the first retaining ring, near the end of the metal wire. A limiting member 402 corresponding to the position of the limiting groove 401 is provided on the second retaining ring. The limiting member 402 is located near the middle of the metal wire. For example, the limiting member 402 can be a key, which can be formed by stamping the metal wire. When the metal wire is wound and in a free state, the limiting member 402 is embedded and resides inside the limiting groove 401. The limiting groove 401 can restrict the movement of the limiting member 402, thereby effectively limiting the relative sliding between the two layers of retaining rings, achieving a self-locking function, and preventing the ring body from failing under axial load, high-speed rotation, or vibration impact. It should be noted that the free state of the self-locking retaining ring 4 can be understood as the state of the self-locking retaining ring 4 when subjected to external force.

[0059] Taking the installation of a self-locking retaining ring on a shaft as an example, the process of installing the self-locking retaining ring onto the target component requires first expanding the retaining ring (increasing its diameter), then fitting it onto the target component, and finally contracting it (reducing its diameter) to tighten it onto the target component. In related technologies, adjacent layers of the self-locking retaining ring are first manually separated, then the retaining ring is fitted onto guide posts with gradually increasing radial dimensions, keeping it in an expanded state. Subsequently, a cylindrical component is fitted onto the guide post to push the self-locking retaining ring onto the target component. Because the cylindrical component applies force to all parts of the self-locking retaining ring, the limiting components of the retaining ring will undergo yielding deformation.

[0060] like Figures 2 to 4 As shown, the self-locking retaining ring installation device provided in this application may include: a guide post 1, a positioning component 2, and a pressing assembly 3; the guide post 1 is used to insert and expand the self-locking retaining ring. Specifically, after the self-locking retaining ring is fitted onto the guide post 1, the diameter of the self-locking retaining ring can be expanded by the guide post 1. For example, the guide post 1 may be a column with a circular cross-section, or it may be a column with a polygonal cross-section; this application does not limit the specific structure of the guide post 1. The guide post 1 can be inserted into the interior of the self-locking retaining ring 4 along its extending direction so that the self-locking retaining ring 4 coincides with the axis of the guide post 1.

[0061] The self-locking retaining ring mounting device has a first working state and a second working state. In the first working state, the positioning component 2 is connected to the guide post 1 and cooperates with the guide post 1 to restrict the self-locking retaining ring 4 from rotating about the axis A of the guide post 1. In the second working state, the positioning component 2 is separated from the guide post 1, and the pressing assembly 3 is connected to the guide post 1. The pressing assembly 3 is used to press the self-locking retaining ring 4 onto the target component 6.

[0062] In other words, in the first working state, the positioning component 2, in conjunction with the guide post 1, restricts the self-locking retaining ring 4 from rotating around the axis of the guide post 1. After the self-locking retaining ring 4 is restricted, the positioning component 2 can be disassembled, and the pressing assembly 3 can be installed to switch the installation device from the first working state to the second working state. The pressing assembly 3 can push the self-locking retaining ring 4 to move on the guide post 1, so that the self-locking retaining ring 4 expands on the guide post 1, and finally separates from the guide post 1 and is fitted onto the target component.

[0063] In some embodiments, the first working state can be understood as the working state when the self-locking retaining ring 4 is installed and positioned on the guide post 1, while the second working state can be understood as the process state in which the self-locking retaining ring 4 is to be pressed or is being pressed using the pressing assembly 3. The process of installing and positioning the self-locking retaining ring 4 on the guide post 1 using the positioning component 2, then removing the positioning component 2 and installing the pressing assembly 3 on the guide post 1 can be understood as the process of transitioning from the first working state to the second working state.

[0064] For example, the guide post 1 can be a column with a circular cross-section, or it can be a column with a polygonal cross-section. This application does not limit the specific structure of the guide post 1. The guide post 1 can be inserted into the interior of the self-locking retaining ring 4 along its extension direction so that the self-locking retaining ring 4 coincides with the axis of the guide post 1.

[0065] To ensure that the positioning component 2 does not affect the pressing assembly 3's pressing of the self-locking retaining ring 4, after the positioning component 2 positions the self-locking retaining ring 4, the positioning component 2 and the self-locking retaining ring 4 can be fitted together onto the guide post. Then, the positioning component 2 can be removed from the guide post, leaving the self-locking retaining ring 4 on the positioning post. Then, the pressing device can be connected to the guide post, and the self-locking retaining ring 4 can be moved by the pressing device to press the self-locking retaining ring onto the target component.

[0066] The self-locking retaining ring 4, after being positioned, needs to be separated from the positioning component 2, and then the positioning component 2 is disassembled. In some possible embodiments, after the self-locking retaining ring 4 is fitted onto the guide post 1 by the positioning component 2, since the self-locking retaining ring 4 is made of elastic metal wire, it will return to its original position due to its own elasticity, thus fixing the self-locking retaining ring 4 to the guide post 1 by its own elastic force. Then the positioning component 2 can be disassembled. In other embodiments, a limiting part can be provided on the guide component to restrict the movement of the self-locking retaining ring 4 along the axial direction A. Then the positioning component 2 is disassembled. During the pressing process of the self-locking retaining ring 4, the limiting part can be released from the self-locking retaining ring 4 to prevent the limiting part from affecting the pressing process.

[0067] The purpose of using the positioning component 2 in conjunction with the guide part to restrict the rotation of the self-locking retaining ring 4 around the axis A of the guide post 1 is to ensure that after the self-locking retaining ring 4 is installed on the guide post 1, the position of the limiting member 402 of the self-locking retaining ring 4 is fixed relative to the position of the guide post 1. Through the cooperation between the positioning component 2 and the guide post 1, the self-locking retaining ring 4 is limited while the limiting member 402 is fixed in a preset position, allowing the operator to clearly identify the position of the limiting member 402. After the position of the limiting member 402 of the self-locking retaining ring 4 is fixed to the guide post 1, the self-locking retaining ring 4 is installed on the guide post 1, and the positioning component 2 can be disassembled. Subsequently, the pressing assembly 3 is installed to switch the installation device from the first working state to the second working state.

[0068] One end face of the press-fit assembly 3 can serve as the press-fit surface. For example, the clearance notch 301 can be machined by a lathe, or it can be pre-formed on the mold during the forming of the press-fit assembly 3. The function of the press-fit assembly 3 is to push the self-locking retaining ring 4 located on the guide post 1 away from the guide post 1 and onto the target part 6, thereby achieving the installation of the self-locking retaining ring 4. For example, the press-fit assembly 3 can be a press-fit ring, which is sleeved on the guide post 1, and the end face of the press-fit ring near the self-locking retaining ring 4 can serve as the press-fit surface. The press-fit assembly 3 can also be a sliding bracket with a stop block, on which a press-fit surface is provided. The stop block slides relative to the guide post 1 through the sliding bracket to press-fit the self-locking retaining ring 4. The press-fit surface is provided with a clearance notch 301, and along the axial direction A, the projection of the self-locking retaining ring 4 limiting member 402 can be located within the clearance notch 301. This can be understood as the clearance notch 301 being spaced apart from the limiting member 402 of the self-locking retaining ring 4 along the axial direction A.

[0069] During the use of the installation device, the self-locking retaining ring 4 can be first installed on the guide post 1 through the positioning component 2. Due to the cooperation between the self-locking retaining ring 4 and the guide post 1, the limiting member 402 of the self-locking retaining ring 4 is located in a fixed position, preventing the self-locking retaining ring 4 from rotating. Since the self-locking retaining ring 4 is set on the guide post 1, the self-locking retaining ring 4 can be expanded so that the projection of the limiting member 402 along the axial direction A onto the adjacent retaining ring is located on the side of the limiting groove 401 near the end of the metal wire. This position can be the expansion position, and the self-locking retaining ring 4 is elastic. After the self-locking retaining ring 4 is expanded, it will generate a spring force that resets the self-locking retaining ring 4, so that the self-locking retaining ring 4 is restricted on the guide post 1 by the spring force. The positioning component 2 can then be disassembled, and the pressing assembly 3 can be installed on the guide post 1. Since the limiting component 402 of the self-locking retaining ring 4 is fixed by the positioning component 2 and the guide post 1, the clearance notch 301 of the pressing assembly 3 can be oriented towards the limiting component 402, so that the clearance notch 301, the expansion position, and the limiting component 402 are arranged along the axial direction A. When the pressing surface contacts the self-locking retaining ring 4, the pressing assembly 3 provides a force to the self-locking retaining ring 4, causing the self-locking retaining ring 4 to move. This will cause the expansion position of the metal wire to contact the limiting component 402. Since the side of the expansion position away from the limiting component 402 is the clearance notch 301, the pressing surface does not restrict the expansion position, so that the expansion position adapts to the elastic deformation of the limiting component 402, causing the clearance position of the metal wire to bulge into the clearance notch 301, effectively preventing the limiting component 402 from yielding during the pressing process of the self-locking retaining ring 4.

[0070] like Figures 5 to 7As shown, in some embodiments, the positioning component 2 includes: a positioning ring 201 and a first limiting structure 202 disposed on the positioning ring 201; the positioning ring 201 is used to carry the self-locking retaining ring 4. For example, the positioning ring 201 can be an annular plate or an annular block. The self-locking retaining ring 4 is placed on the positioning ring 201 so that when the guide post 1 passes through the positioning ring 201, the self-locking retaining ring 4 can pass through simultaneously. The first limiting structure 202 can restrict the self-locking retaining ring 4 so that the self-locking retaining ring 4 cannot rotate around the axis of the guide post 1. For example, the first limiting structure 202 can be a baffle, and the baffle and the limiting ring clamp the self-locking retaining ring 4 to restrict the self-locking retaining ring 4 from rotating around the axis A. The first limiting component can also be a clamping structure, which restricts the self-locking retaining ring 4 from rotating around the axis A by clamping. This application does not limit the specific structure of the first limiting structure 202, and it can be selected according to actual process and cost factors.

[0071] The positioning component 2 also includes a second limiting structure 203, which is disposed on the positioning ring 201. The guide post 1 is provided with a third limiting structure 101. The cooperation of the second limiting structure 203 and the third limiting structure 101 can restrict the rotation of the positioning component 2 around the axis of the guide post 1, thereby cooperating with the first limiting structure 202 to prevent the self-locking retaining ring 4 from rotating around the axis of the guide post 1. In some possible embodiments, the second limiting structure 203 can be a keyway disposed on the inner circumferential surface of the positioning ring 201, and the third limiting structure 101 can be a detachable key disposed on the guide post 1. The cooperation between the key and the keyway can restrict the rotation of the positioning ring 201 on the guide post 1. In other embodiments, the inner circumferential surface of the positioning ring 201 can form a rectangular area to constitute the second limiting structure 203, and the end of the guide component can be set as a rectangular column to constitute the third limiting structure 101. The rectangular column is set on the inner circumferential surface of the positioning ring 201 to restrict the positioning ring 201 from rotating around the axial direction A. This application does not limit the specific structure of the second limiting structure 203 and the third limiting structure 101, and they can be selected according to actual factors such as process and cost.

[0072] Based on the aforementioned technical features, the installation device provided in this application first limits the self-locking retaining ring 4 and the positioning ring 201 through the first limiting structure 202, preventing the self-locking retaining ring 4 from rotating relative to the positioning ring 201 around the axial direction A. Subsequently, the positioning ring 201 and the guide post 1 are limited by the second limiting structure 203 and the third limiting structure 101, preventing the positioning ring 201 from rotating relative to the guide post 1 around the axial direction A. Thus, the self-locking retaining ring 4 cannot rotate relative to the guide post 1 around the axial direction A. Through the combined action of the first limiting structure 202, the second limiting structure 203, and the third limiting structure 101, the limiting member 402 of the self-locking retaining ring 4 is held in a known fixed position. The limiting member 402 is held in a fixed position so that, in the second working state, the clearance notch 301 on the pressing surface and the limiting member 402 are aligned along the axial direction A, effectively preventing the limiting member 402 from yielding and deforming during the pressing process of the self-locking retaining ring 4.

[0073] like Figure 5 As shown, in some embodiments, the positioning ring 201 has a bearing surface B for supporting the self-locking retaining ring 4, and a first limiting structure 202 is disposed on the bearing surface B, which can be at least partially located within the limiting groove 401 of the self-locking retaining ring 4. For example, the positioning ring 201 may have a flat annular surface as the bearing surface B, which can fit against the surface of the self-locking retaining ring 4. In some possible embodiments, the first limiting structure 202 may be a protrusion that can be inserted into the limiting groove 401 of the self-locking retaining ring 4 to restrict the self-locking retaining ring 4 from rotating about the axial direction A. In other possible embodiments, the first limiting structure 202 may include a first protrusion and a second protrusion, the first protrusion being a larger protrusion disposed on the bearing surface B, and the second protrusion being smaller and disposed on the side of the first protrusion away from the bearing surface B. Because the first protrusion is relatively large, the operator can align the limiting groove 401 of the self-locking retaining ring 4 with the first protrusion during installation, and then make fine adjustments to allow the second protrusion to engage with the limiting groove 401 of the self-locking retaining ring 4. This enables rapid positioning of the self-locking retaining ring 4 and increases the ease of blind installation. By having the first limiting structure 202 engage with the limiting groove 401, the rotation of the self-locking retaining ring 4 around the axis A is restricted. This design is simple in structure and process, and easy to operate, allowing the operator to install the self-locking retaining ring 4 onto the positioning component 2 more quickly.

[0074] like Figure 5 , Figure 6 as well as Figure 7As shown, in some embodiments, the second limiting structure 203 includes a protrusion on the inner circumferential surface of the positioning ring 201; the third limiting structure 101 includes a first recess on the outer circumferential surface of the guide post 1. In the first working state, at least a portion of the protrusion is located within the first recess to restrict the positioning ring 201 from rotating about the axial direction A. For example, the second limiting structure 203 can be a key, and the third limiting structure 101 can be a groove. By placing the key in the groove, the rotation of the positioning ring 201 about the axial direction A is restricted, thereby fixing the limiting member 402 of the self-locking retaining ring 4 in a fixed position. With this configuration, during the installation of the positioning ring 201, the protrusion and the first recess can be used to quickly install and position the positioning ring 201, thereby achieving quick installation and positioning of the limiting member 402.

[0075] like Figure 5 As shown, in some embodiments, the positioning ring 201 further includes a first annular portion 2011 and a second annular portion 2012. In some possible embodiments, the first annular portion 2011 can be an annular plate, and one surface of the annular plate can serve as a bearing surface B. The second annular portion 2012 can be an annular frame, which is disposed around the periphery of the annular plate, allowing the bearing surface B to be connected to the inner wall of the annular frame. Exemplarily, the first annular portion 2011 and the second annular portion 2012 can be integrally formed, or they can be welded together. This application does not limit the specific connection method of the first annular portion 2011 and the second annular portion 2012. The second annular portion 2012 surrounding and disposed around the bearing surface B can provide radial restraint for the self-locking retaining ring 4 disposed on the bearing surface B, thereby increasing the convenience for the operator to install the self-locking retaining ring 4 onto the positioning component 2 and preventing the self-locking retaining ring 4 from separating from the positioning component 2 due to external forces.

[0076] In some possible embodiments, when the self-locking retaining ring 4 is in a free state, there is a gap between the outer peripheral surface of the self-locking retaining ring 4 disposed on the positioning member 2 and the inner peripheral surface of the second annular portion 2012. Due to the existence of this gap, when the self-locking retaining ring 4 is installed on the guide post 1 along with the positioning member 2, the self-locking retaining ring 4 can expand within the second annular portion 2012 through the guide post 1, so that the self-locking retaining ring 4 generates an elastic force sufficient to restrict the self-locking retaining ring 4 on the guide post 1, and then the positioning member 2 can be disassembled. To prevent the self-locking retaining ring 4 from detaching from the positioning member 2, the guide post 1 can be lowered first, then the self-locking retaining ring 4 can be positioned above the positioning member 2, and the positioning member 2 can be installed on the guide post 1. After the self-locking retaining ring 4 is fixed on the guide post 1, the guide post 1 can be flipped over, and then pressed in by the pressing assembly 3.

[0077] In some possible embodiments, the positioning component 2 can also be a mounting bracket with a clamping structure to restrict the relative rotation of the self-locking retaining ring 4 relative to the positioning component 2. A retaining part can be provided on the guide post 1 to mount the positioning component 2 onto it. The retaining part holds the positioning component 2, thereby restricting its rotation relative to the guide post 1, and thus restricting the rotation of the self-locking retaining ring 4 around the axis A of the guide post 1. This application does not limit the specific structure of the guide post 1 and the positioning component 2; they can be selected according to actual needs such as process and cost.

[0078] like Figure 5 , Figure 7 as well as Figure 8 As shown, in some possible embodiments, the positioning component 2 may further include: a limiting cover 204, which has a double-layer stepped structure. The stepped surface of the first layer of the limiting cover 204 is the first contact surface C, and the stepped surface of the second layer is the limiting surface E. The second annular portion 2012 may have a second contact surface D. When the first contact surface C and the second contact surface D are in contact, the limiting surface E is opposite to the bearing surface B, and the distance between the limiting surface E and the bearing surface B is equal to the thickness of the self-locking retaining ring 4, and the distance from the first limiting structure 202 to the limiting surface E is equal to the thickness of the retaining ring plate of the self-locking retaining ring 4. After placing the self-locking retaining ring 4 on the bearing surface B and extending the first limiting structure 202 into the limiting groove 401, cover the positioning ring 201 with the limiting cover 204. The first contact surface C can contact the second contact surface D, and the self-locking retaining ring 4 can be accommodated between the limiting surface E and the bearing surface B to verify whether the first limiting structure 202 is inserted into the limiting groove 401. If the first limiting structure 202 is not inserted into the limiting groove 401, the position of the self-locking retaining ring 4 will be offset along the axial direction A, resulting in the first contact surface C not being able to fit with the second contact surface. In this case, the self-locking retaining ring 4 needs to be adjusted. After the limiting cover 204 verifies that the first limiting structure 202 is located in the limiting groove 401, the limiting cover 204 can be removed, and then the positioning ring 201 with the self-locking retaining ring 4 can be installed onto the guide post 1.

[0079] like Figures 2 to 7 As shown, in some possible embodiments, the self-locking retaining ring 4 may have two limiting grooves 401, which may be located at the first end and the second end of the metal wire, respectively. There are also two limiting members 402, which extend in opposite directions and are located on either side of the middle of the metal wire. Correspondingly, two clearance notches 301 need to be provided on the pressing surface. When the self-locking retaining ring 4 is placed on the bearing surface B, and the bearing surface B is parallel to the horizontal plane, the first limiting groove 401 of the self-locking retaining ring 4 is located above, while the second limiting groove 401 is located below. The first limiting structure 202 can be engaged within the second limiting groove 401 to fix the self-locking retaining ring 4.

[0080] Subsequently, the self-locking retaining ring 4 is installed on the guide post 1 via the positioning component 2. Due to the expansion of the self-locking retaining ring 4, the projection of the first limiting member 402 along the axial direction A is located at the position of the first limiting groove 401 near the first end of the metal wire. This position can be the first expansion position. At the same time, the projection of the second limiting member 402 along the axial direction A is located at the position of the second limiting groove 401 near the second end of the metal wire. This position can be the second expansion position. When in the second working state, the pressing surface contacts the self-locking retaining ring 4, so that the first clearance notch 301, the first expansion position of the metal wire, and the first limiting member 402 are arranged sequentially along the axial direction A. The first expansion position of the metal wire will abut against the first limiting member 402. Since the first clearance notch 301 does not restrict the first expansion position of the metal wire, elastic deformation occurs at the first expansion position of the metal wire, causing it to recess into the first clearance notch 301 to adapt to the shape of the first limiting member 402. This arrangement can prevent the first limiting member 402 from yielding and failing.

[0081] Simultaneously, the press-fit surface contacts the self-locking retaining ring 4, allowing the second clearance notch 301, the second limiting member 402, and the second expansion position to be arranged sequentially along the axial direction A. The second expansion position of the metal wire will abut against the second limiting member 402. Since the second clearance notch 301 does not restrict the second limiting member 402, the two areas on both sides of the second limiting member 402 will undergo elastic deformation to adapt to the shape of the second limiting member 402, causing the second limiting member 402 to move into the second clearance notch 301. This arrangement can prevent the second limiting member 402 from yielding and failing.

[0082] like Figure 8 , Figure 9 as well as Figure 10 As shown, in some embodiments, the second annular portion 2012 has a through-hole structure 20121 extending radially along the second annular portion 2012. Exemplarily, the through-hole structure 20121 can be a through-hole with an elongated cross-section or a through-hole with a circular cross-section. This application does not limit the specific structure of the through-hole structure 20121. The function of the through-hole structure 20121 is to connect the two sides of the second annular portion 2012 in the radial direction.

[0083] The mounting device also includes a misalignment component 5, which can pass through the through-hole structure 20121 and be located between two adjacent retaining ring plates of the self-locking retaining ring 4. In some possible embodiments, the misalignment component 5 can be a plate, the end of which can be provided with a guide structure. The plate is inserted into the through-hole structure 20121 and passes through the guide structure to allow the misalignment component 5 to penetrate between two adjacent retaining ring plates. In other possible embodiments, the self-locking retaining ring 4 can have two limiting members 402. The misalignment component 5 can be a plate with at least four ends. The misalignment component 5 can have two sets of insertion ends, each set of insertion ends having two insertion ends 501. The four insertion ends 501 can be arranged in a circle. Correspondingly, the second annular portion 2012 can be provided with four through hole structures 20121 that correspond one-to-one with the insertion ends 501. The insertion ends 501 can extend into the interior of the second annular portion 2012 through the corresponding through hole structures 20121 and be inserted between two adjacent retaining rings of the self-locking retaining ring 4. At the same time, the two insertion ends 501 of the first set can be located on both sides of the first limiting member 402. Correspondingly, the two insertion ends 501 of the second set can be located on both sides of the second limiting member 402, so that the limiting member and the limiting groove 401 of the self-locking retaining ring 4 are spaced apart along the axial direction A. This design effectively prevents the self-locking retaining ring 4 from being positioned in the positioning component 2, where the limiting member 402 of the self-locking retaining ring 4 is located in the limiting groove 401, thus preventing the self-locking retaining ring 4 from expanding after being installed in the guide part.

[0084] During the use of the installation device, the self-locking retaining ring 4 can be placed into the positioning component 2, and the adjacent two layers of retaining ring plates of the self-locking retaining ring 4 can be separated along the axial direction A by the misalignment component 5. The self-locking retaining ring 4 will clamp the misalignment component 5 due to its own restoring force. Then, the positioning component 2 with the self-locking retaining ring 4 is installed on the guide post 1, so that the self-locking retaining ring 4 expands until the projection of the limiting member 402 along the axial direction A is located within the expansion position of the metal wire. At this time, the self-locking retaining ring 4 can not achieve self-locking, and the limiting member 402 of the self-locking retaining ring 4 is fixed relative to the guide post 1, so that the positioning component 2 and the misalignment component 5 can be disassembled.

[0085] like Figure 2 and Figure 11In some embodiments, the guide post 1 further includes: a first guide post segment 102, a second guide post segment 103, and a third guide post segment 104; the first guide post segment 102 has a first end and a second end, and the radial dimension of the first guide post segment 102 gradually increases from the first end to the second end; in some possible embodiments, the first guide post segment 102 may be a frustum structure, the end of the frustum structure with a smaller area can be the first end of the first guide post segment 102, and the end of the frustum structure with a larger area can be the second end of the first guide post segment 102. When the self-locking retaining ring 4 is sleeved on the first guide post segment 102 from the first end of the first guide post segment 102, it then moves along the axial direction of the first guide post segment 102 towards the second end of the first guide post segment 102, so that the self-locking retaining ring 4 is expanded.

[0086] It should be noted that when the self-locking retaining ring 4 moves from a position with a smaller radial dimension to a position with a larger radial dimension in the first guide column section 102, the self-locking retaining ring 4 is expanded. During the expansion process, the main displacement of the self-locking retaining ring 4 is at the end of the metal wire constituting the self-locking retaining ring 4. The two ends move along the circumference of the guide component, and the limiting groove 401 moves with the ends, while the position of the limiting member 402 near the middle has almost no displacement.

[0087] The second guide post segment 103 is disposed at the first end of the first guide post segment 102. Exemplarily, the second guide post segment 103 and the first guide post segment 102 can be integrally formed, or they can be welded together. This application does not limit the specific connection method between the first guide post segment 102 and the second guide post segment 103. In some possible embodiments, the radial dimension of the second guide post segment 103 can be the same as the radial dimension of the first end of the first guide post segment 102. The third limiting structure 101 is disposed on the second guide post segment 103, and the radial dimension of the second guide post segment 103 can be adapted to the inner diameter of the positioning ring 201. The radial dimension of the second guide post segment 103 can be larger than the inner diameter of the self-locking retaining ring 4 in its normal state. During use, the limiting member 402 can be separated from the limiting groove 401 by the misalignment component 5, and the positioning ring 201 and the self-locking retaining ring 4 can be installed on the guide post 1. Since the radial dimension of the second guide post section 103 is larger than the inner diameter of the self-locking retaining ring 4 in its normal state, the projection of the limiting member 402 of the self-locking retaining ring 4 along the axial direction A can be located at the expansion position of the metal wire, so that the self-locking retaining ring 4 is fixed on the second guide post section 103, and the limiting member 402 of the self-locking retaining ring 4 is limited to a fixed position by the first limiting structure 202, the second limiting structure 203 and the third limiting structure 101. Subsequently, the self-locking retaining ring 4 can be pressed onto the first guide post section 102 by the pressing component, so that the self-locking retaining ring 4 expands in size on the first guide post section 102.

[0088] The third guide post segment 104 is disposed at the second end of the second guide post segment 103. For example, the second guide post segment 103 and the first guide post segment 102 may be integrally formed, or they may be welded together. This application does not limit the specific connection method between the first guide post segment 102 and the third guide post segment 104. In some possible embodiments, the radial dimension of the first guide post segment 102 may be the same as the radial dimension of the second end of the first guide post segment 102. The self-locking retaining ring 4 can be pressed from the first guide post segment 102 onto the third guide post segment 104 by a press-fitting component, so that the self-locking retaining ring 4 can maintain a sufficiently expanded state on the third guide post segment 104. This arrangement allows the self-locking retaining ring 4 to maintain an expanded state on the third guide post segment 104, providing sufficient space to precisely align the expanded self-locking retaining ring 4 with the groove position on the shaft.

[0089] like Figure 12 and Figure 13 As shown, in some embodiments, the press-fit assembly 3 includes: a press-fit body 302, which further includes a second recessed structure 3021 recessed along the axial direction A by the press-fit surface; for example, the press-fit body 302 may be a cylindrical structure with an opening on one side, the end face of the cylindrical structure with the opening can serve as the press-fit surface, and the interior of the press-fit body 302 can serve as the second recessed structure 3021. The press-fit body 302 may also be an annular frame, the end face of the annular frame in the thickness direction can serve as the press-fit surface, and the interior region of the annular frame can serve as the second recessed structure 3021. This application does not limit the specific structure of the press-fit assembly 3, and it can be selected according to process and cost requirements. In some possible embodiments, the radial dimension of the third guide post segment 104 of the guide post 1 can be adapted to the radial dimension of the second recessed structure 3021 so that the guide post 1 can be inserted into the second recessed structure 3021 so that the pressing body 302 can move along the length direction of the guide post 1, thereby enabling the pressing surface to push the self-locking retaining ring 4 to be pressed onto the target component 6.

[0090] The press-fit assembly 3 also includes a fourth limiting structure 303, which is disposed on the inner wall surface of the second recessed structure 3021. The guide post 1 has a fifth limiting structure 105. In the second working state, the guide post 1 is located within the second recessed structure 3021, and the fourth limiting structure 303 and the fifth limiting structure 105 cooperate to limit the movement. For example, the fourth limiting structure 303 can be a slot disposed within the second recessed structure 3021, and the fifth limiting structure 105 can be a protruding key disposed on the outer circumferential surface of the guide post 1. The cooperation between the protruding key and the slot restricts the rotation of the press-fit body 302 around the axial direction A. Alternatively, the fourth limiting structure 303 can be a protruding key disposed within the second recessed structure 3021, and the fifth limiting structure 105 can be a slot disposed on the guide post to restrict the rotation of the press-fit body 302 around the axial direction A. This application does not limit the specific structure of the fourth limiting structure 303 and the fifth limiting structure 105, and they can be selected according to the actual situation such as process and cost.

[0091] By cooperating with the fourth limiting structure 303 and the fifth limiting structure 105, the rotation of the pressing body 302 along the axial direction A can be restricted, while the clearance notch 301 can be positioned in a fixed position by the fourth limiting structure 303 and the fifth limiting structure 105. The first limiting structure 202, the second limiting structure 203 and the third limiting structure 101 have positioned the limiting member 402 of the self-locking retaining ring 4 in a fixed position relative to the guide post 1. In this way, the clearance notch 301 and the limiting member 402 can be aligned along the axial direction A. Therefore, during the pressing process of the self-locking retaining ring 4, the clearance notch 301 can prevent the limiting member 402 from being directly subjected to the pressing force of the pressing body 302. Meanwhile, the first limiting structure 202, the second limiting structure 203, the third limiting structure 101, the fourth limiting structure 303 and the fifth limiting structure 105 work together to arrange the limiting parts 402 and the clearance notch 301 of the self-locking retaining ring 4 along the axial direction A, which facilitates the blind installation of the installation device and the self-locking retaining ring 4 by the operator and effectively increases the pressing efficiency of the self-locking retaining ring 4.

[0092] like Figure 12 and Figure 13 As shown, in some embodiments, the second recessed structure 3021 further has a bottom wall surface, which is disposed opposite to the pressing surface, and the fourth limiting structure 303 is connected to the bottom wall surface; in some possible embodiments, the pressing body 302 can be a cylindrical body, and one end of the pressing body 302 is provided with an opening structure, and the inner wall of the pressing body 302 relative to the opening structure can serve as the bottom wall surface. For example, the fourth limiting structure 303 can be a protruding key or a rod, and the fourth limiting structure 303 can be welded to the pressing body 302, or the fourth limiting structure 303 and the pressing body 302 can be integrally formed.

[0093] The fifth limiting structure 105 includes a limiting hole 1052 extending along the axial direction A. The limiting hole 1052 is spaced apart from the axis of the guide post 1. In the second working state, the fourth limiting structure 303 is located within the limiting hole 1052. In some possible embodiments, the extending direction of the limiting hole 1052 may be the same as the axial direction A of the guide post 1. The spaced-apart arrangement of the limiting hole 1052 and the axis of the guide post 1 can be understood as the axis of the limiting hole 1052 and the axis of the guide post 1 being radially spaced apart. In some possible embodiments, the limiting hole 1052 may be located on the end face of the second guide segment away from the first guide post segment 102. By inserting the fourth limiting structure 303 into the fifth limiting structure 105, the rotation of the pressing body 302 along the axial direction A is restricted. This configuration is simple, convenient to operate, and effectively increases the pressing efficiency of the self-locking retaining ring 4 by the operator.

[0094] like Figure 12 and Figure 13 As shown, in some embodiments, the fourth limiting structure 303 includes a guide rod 3031 and a limiting strip 3032. The guide rod 3031 is disposed on the bottom wall surface. In some possible embodiments, one end of the guide rod 3031 is connected to the bottom wall surface of the press-fit body 302. For example, the guide rod 3031 may be welded to the press-fit body 302, or it may be integrally formed with the press-fit body 302. The extending direction of the guide rod 3031 may be parallel to the axial direction A of the guide portion. The limiting strip 3032 is connected to the outer peripheral surface of the guide rod 3031. In some embodiments, the limiting strip 3032 may be a protrusion on the guide rod 3031 that protrudes perpendicular to the extending direction of the guide rod 3031. For example, the limiting strip 3032 may be integrally formed with the guide rod 3031, or the limiting strip 3032 may be connected to the guide rod 3031 by welding. This application does not limit the specific connection method between the limiting strip 3032 and the guide rod 3031, which can be determined according to cost or process requirements.

[0095] The fifth limiting structure 105 also includes a guide hole 1051, which, along with the limiting hole 1052, is arranged radially along the guide post 1 and is connected to the limiting hole 1052. In some possible embodiments, the guide hole 1051 and the guide post 1 may be on the same axis. In other possible embodiments, the axis of the guide hole 1051 and the axis of the guide post 1 may also be arranged radially spaced along the guide post 1. The guide hole 1051 and the limiting hole 1052 are connected, so that the guide hole 1051 and the limiting hole 1052 form an irregularly shaped hole. The cross-section of the irregularly shaped hole perpendicular to the extension direction can be adapted to the cross-section perpendicular to the extension direction of the composite structure formed by the limiting strip 3032 and the guide rod 3031. In the second working state, the guide rod 3031 is located in the guide hole 1051 to guide the movement of the press-fit body 302 on the guide post 1. At the same time, in the second working state, the limiting strip 3032 is located in the limiting hole 1052 to restrict the rotation of the press-fit body 302 along the axis A.

[0096] like Figures 11 to 14 As shown, in some embodiments, the guide hole 1051 includes a guide section 10511 and a clearance section 10512. The diameter of the guide section 10511 is adapted to the radial dimension of the guide rod 3031 so that the guide hole 1051 of the guide section 10511 can limit the guide rod 3031, allowing the guide section 10511 to cooperate with the guide rod 3031 to guide the movement of the press-fit body 302 carrying the guide rod 3031. The limiting hole 1052 and the guide section 10511 are spaced apart along the radial direction of the guide post 1 so that the limiting hole 1052 can cooperate with the limiting strip 3032 to prevent the press-fit body 302 from rotating around the axial direction A. The clearance section 10512 is located on the side of the guide section 10511 away from the bottom wall surface. When the mounting position of the self-locking retaining ring 4 on the target component 6 is obstructed, the obstruction can be accommodated by the clearance section 10512 so that the guide post 1 can avoid the obstruction and prevent the self-locking retaining ring 4 from being unable to be press-fitted due to the presence of the obstruction.

[0097] In some possible embodiments, target component 6 can be a coaxial integrated electric drive with a helical gear rotor featuring an integrated design. This rotor has a rotor gear shaft 601, resulting in a large axial load on the bearings, necessitating the fixing of the inner and outer bearing rings on the motor side. The outer ring is simply and cost-effectively fixed using a retaining ring, while the inner ring requires a self-locking retaining ring 4 to prevent axial movement of the rotor under high-speed conditions. Since the bearings and retaining rings need to be installed into the housing from the side away from the rotor gear shaft 601 before rotor assembly, the self-locking retaining ring 4 must be installed into the inner ring groove of the rotor from the helical gear side in the assembled state. However, due to the limitations of the integrated structure, a reducer component needs to be arranged on the rotor gear shaft 601 side, resulting in strict constraints on the installation depth and radial space of the self-locking retaining ring 4. Furthermore, it must pass through the rotor gear shaft 601 and avoid the housing, making installation difficult. In this way, the rotor gear shaft 601 can be accommodated through the clearance section 10512 with a larger aperture. During operation, the guide post 1 with the self-locking retaining ring 4 can be sleeved from the clearance section 10512 onto the rotor gear shaft 601. Then, the press-fit assembly 3 is installed on the guide post 1, and the self-locking retaining ring 4 on the guide post 1 is press-fitted onto the rotor shaft.

[0098] like Figure 13 As shown, in some embodiments, the press-fit assembly 3 further includes an elastic element 304, which is sleeved on the guide rod 3031 and located between the bottom wall surface and the guide post 1. Exemplarily, the elastic element 304 can be a spring or an air bladder. This application does not limit the specific structure of the elastic element 304; it can be selected based on factors such as process and cost. In some possible embodiments, the elastic element 304 can be a spring, sleeved on the guide rod 3031. In other embodiments, the elastic element can also be a cylindrical rubber component, latex component, etc. During the press-fitting process, the press-fitting body 302 compresses the elastic element 304 against the guide post 1, causing the elastic element 304 to generate elastic force to counteract the inertial force of the press-fitting body 302 during the press-fitting process, reducing the yield deformation of the self-locking retaining ring 4 caused by inertial force during the press-fitting process.

[0099] This application also provides a method for installing a self-locking retaining ring. This installation method uses the self-locking retaining ring installation device provided in this application. First, the self-locking retaining ring 4 is placed on the positioning component 2 of the self-locking retaining ring installation device. The positioning component 2 with the self-locking retaining ring 4 is then fitted onto the guide post 1 to restrict the rotation of the self-locking retaining ring 4 around the axial direction A. The positioning component 2 is separated from the guide post 1, and the pressing assembly 3 of the self-locking retaining ring installation device is installed on the guide post 1 so that the projection of the limiting member 402 of the self-locking retaining ring 4 along the axial direction A is located within the clearance notch 301. The guide post 1 is placed on the target component 6, and the pressing surface is driven to push the self-locking retaining ring 4 to install the self-locking retaining ring 4 onto the target component 6. This effectively avoids the limiting member 402 of the self-locking retaining ring 4 from yielding failure due to pressing, and also increases the installation efficiency of blind-installation of the self-locking retaining ring 4. For details regarding the installation device and usage method of the self-locking retaining ring, please refer to the description of the self-locking retaining ring installation device provided in this application, which will not be repeated here.

[0100] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A self-locking retaining ring mounting device, characterized in that, The self-locking retaining ring mounting device has a first working state and a second working state. The mounting device includes: a guide post (1), a positioning component (2), and a pressing assembly (3). The guide post (1) is used to pass through and expand the self-locking retaining ring (4). In the first working state, the positioning component (2) is connected to the guide post (1) and cooperates with the guide post (1) to restrict the self-locking retaining ring (4) from rotating around the axis (A) of the guide post (1). In the second working state, the positioning component (2) is separated from the guide post (1), the pressing assembly (3) is connected to the guide post (1), and the pressing assembly (3) is used to press the self-locking retaining ring (4) onto the target component (6); The press-fit assembly (3) has a press-fit surface for pressing the self-locking retaining ring (4), and an avoidance notch (301) is provided on the press-fit surface. Along the axial direction (A), the projection of the self-locking retaining ring (4) limiting member (402) can be located within the avoidance notch (301).

2. The self-locking retaining ring mounting device according to claim 1, characterized in that, Positioning component (2) includes: The positioning ring (201) and the first limiting structure (202) disposed on the positioning ring (201) are provided. The positioning ring (201) is used to carry the self-locking retaining ring (4), and the first limiting structure (202) is used to restrict the self-locking retaining ring (4) from rotating about the axis direction (A). The second limiting structure (203) is disposed on the positioning ring (201), and the guide post (1) is provided with a third limiting structure (101). In the first working state, the positioning ring (201) is sleeved on the guide post (1), and the third limiting structure (101) cooperates with the second limiting structure (203) to limit the positioning ring (201) from rotating around the axis (A).

3. The self-locking retaining ring mounting device according to claim 2, characterized in that, The positioning ring (201) has a bearing surface (B) for bearing the self-locking retaining ring (4), and the first limiting structure (202) is disposed on the bearing surface (B), and at least a portion of the first limiting structure (202) can be located in the limiting groove (401) of the self-locking retaining ring (4).

4. The self-locking retaining ring mounting device according to claim 2, characterized in that, The second limiting structure (203) includes a protrusion structure disposed on the inner circumferential surface of the positioning ring (201); The third limiting structure (101) includes a first recessed structure disposed on the outer peripheral surface of the guide post (1). In the first working state, at least a portion of the protruding structure is located within the first recessed structure to restrict the positioning ring (201) from rotating about the axial direction (A).

5. The self-locking retaining ring mounting device according to claim 3, characterized in that, The positioning ring (201) also includes: A first annular portion (2011) is provided with the bearing surface (B); The second annular portion (2012) is connected to the periphery of the first annular portion (2011) and is disposed around the bearing surface (B).

6. The self-locking retaining ring mounting device according to claim 5, characterized in that, The second annular portion (2012) has a through-hole structure (20121) extending radially along the second annular portion (2012); The installation device further includes a misalignment component (5), which can be inserted through the through hole structure (20121) and can be located between two adjacent layers of retaining rings of the self-locking retaining ring (4) so ​​that the limiting member (402) and the limiting groove (401) of the self-locking retaining ring (4) are spaced apart along the axial direction (A).

7. The self-locking retaining ring mounting device according to claim 2, characterized in that, The guide post (1) also includes: A first guide post segment (102) has a first end and a second end, and the radial dimension of the first guide post segment (102) gradually increases from the first end to the second end. The second guide post segment (103) is disposed at the first end of the first guide post segment (102), and the third limiting structure (101) is disposed at the second guide post segment (103). In the first working state, the positioning ring (201) is sleeved on the second guide post segment (103), and the self-locking retaining ring (4) is sleeved on the first end. The third guide post segment (104) is disposed at the second end of the first guide post segment (102), and the radial dimension of the third guide post segment (104) is the same as the radial dimension of the second end of the first guide post segment (102).

8. The self-locking retaining ring mounting device according to claim 1, characterized in that, The press-fit assembly (3) includes: The pressing body (302) has the pressing surface and is further provided with a second recessed structure (3021) recessed from the pressing surface along the axial direction (A); A fourth limiting structure (303) is disposed on the inner wall surface of the second recessed structure (3021); The guide post (1) has a fifth limiting structure (105). In the second working state, the guide post (1) is located in the second recessed structure (3021), and the fourth limiting structure (303) cooperates with the fifth limiting structure (105) to limit the rotation of the press-fit body (302) around the axis direction (A).

9. The self-locking retaining ring mounting device according to claim 8, characterized in that, The second recessed structure (3021) also has a bottom wall surface, which is disposed opposite to the pressing surface, and the fourth limiting structure (303) is connected to the bottom wall surface; The fifth limiting structure (105) includes a limiting hole (1052) extending along the axial direction (A), the limiting hole (1052) being spaced apart from the axis of the guide post (1), and in the second working state, the fourth limiting structure (303) is located inside the limiting hole (1052).

10. The self-locking retaining ring mounting device according to claim 9, characterized in that, The fourth limiting structure (303) includes a guide rod (3031) and a limiting strip (3032). The guide rod (3031) is connected to the bottom wall surface, and the limiting strip (3032) is connected to the outer peripheral surface of the guide rod (3031). The fifth limiting structure (105) further includes a guide hole (1051), the guide hole (1051) and the limiting hole (1052) are arranged radially along the guide post (1), and the guide hole (1051) and the limiting hole (1052) are in communication. In the second working state, the limiting strip (3032) is located in the limiting hole (1052), and the guide rod (3031) is located in the guide hole (1051).

11. The self-locking retaining ring mounting device according to claim 9, characterized in that, The guide hole (1051) includes a guide section (10511) and a clearance section (10512). The diameter of the guide section (10511) is adapted to the radial dimension of the guide rod (3031). The limiting hole (1052) and the guide section (10511) are spaced apart along the radial direction of the guide post (1). The clearance section (10512) is located on the side of the guide section (10511) away from the bottom wall surface. The diameter of the clearance section (10512) is larger than the diameter of the guide section (10511). And / or, the press-fit assembly (3) further includes an elastic element (304), which is sleeved on the guide rod (3031) and located between the bottom wall surface and the guide post (1).

12. A method for installing a self-locking retaining ring, characterized in that, The installation method uses the self-locking retaining ring installation device according to any one of claims 1-11, and the installation method includes: The self-locking retaining ring (4) is placed on the positioning component (2) of the mounting device for the self-locking retaining ring; The positioning component (2) with the self-locking retaining ring (4) is fitted onto the guide post (1) to restrict the self-locking retaining ring (4) from rotating about the axis (A); Separate the positioning component (2) from the guide post (1) and install the press-fit assembly (3) of the self-locking retaining ring mounting device on the guide post (1) so that the projection of the self-locking retaining ring (4) limiting member (402) along the axial direction (A) can be located within the clearance notch (301); The guide post (1) is placed on the target component (6), and the pressing surface is driven to push the self-locking retaining ring (4) to install the self-locking retaining ring (4) onto the target component (6).

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