Mounting clamp for self-locking check ring

Abstract

The utility model discloses an installation clamp of a self-locking check ring. A shaft sleeve is arranged on an installation shaft in a sleeving mode. A groove is formed in the mounting shaft; the gasket separates the upper layer and the lower layer of the self-locking check ring, and the self-locking check ring comprises a self-locking structure; the press-fitting cylinder is provided with a receding groove, and the self-locking structure located on the upper layer is located on the movement track of the receding groove. In a first state, the shaft sleeve sleeves the mounting shaft; in the second state, the gasket opens the self-locking check ring, and the shaft sleeve is sleeved with the self-locking check ring; in the third state, the press-fitting barrel is arranged on the shaft sleeve in a sleeving mode and moves towards the self-locking check ring till the press-fitting barrel abuts against the self-locking check ring, and the self-locking check ring is driven to move to the upper edge of the groove; the gasket is detached, and the press-fitting cylinder continues to move until the self-locking check ring is matched with the groove; according to the press-fitting cylinder, through the arrangement of the receding groove, the press-fitting cylinder cannot be pressed down to the position of the lock in the installation process, the effect of protecting the lock is achieved, and therefore it is guaranteed that the structure of the lock cannot be damaged, installation convenience is improved, and normal use of a product is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of tooling fixtures, specifically to an installation fixture for a self-locking retaining ring. Background Technology

[0002] For example, Chinese invention patent, publication number "CN117428445B", entitled "Installation Device and Method for Convenient Installation of Self-Locking Retaining Rings", discloses an installation device for installing self-locking retaining rings. As shown in the attached figure, the specific installation steps are as follows: The worker first puts the self-locking retaining ring onto the second auxiliary workpiece, and then inserts a card into the two slots (equivalent to lock holes) of the self-locking retaining ring. At this time, the self-locking retaining ring is squeezed by the barbs (equivalent to locks), causing the locking end of the self-locking retaining ring to be at an inclined angle and parallel. The pressing component pushes the third auxiliary component to press the self-locking retaining ring on the second auxiliary component downward and into the first auxiliary component. The self-locking retaining ring is pressed downward... During sliding, the second auxiliary component expands slightly with the taper of its side, then tightens after locking into the slot on the first auxiliary component. At this point, the two sets of stepped tips on the locking end of the self-locking retaining ring engage through bending the steps, while the barbs insert into the slot and push the card out. At this time, the locking end of the self-locking retaining ring is in a horizontal and parallel state, achieving a highly secure self-locking installation. Meanwhile, because the width of the slot on the first auxiliary component is the same as the thickness of the self-locking retaining ring, the slot on the first auxiliary component provides a limiting action for the self-locking of the self-locking retaining ring. When the self-locking retaining ring on the first auxiliary component expands due to external force, the slot can effectively press down on the barbs to prevent them from sliding out of the slot, achieving an effective self-locking state.

[0003] As attached Figure 1 As shown, the existing self-locking retaining ring has at least two layers, with notches at the ends of both the upper and lower layers. A self-locking structure is located near these notches, allowing the lock to engage with the keyhole. In practice, installation is performed using the aforementioned method. However, during actual use, it was found that because the lower layer's notch is installed into the groove before the upper layer's notch, the lower layer's self-locking structure does not deform due to its own restoring force. Conversely, the upper layer's self-locking structure, being installed later, has limited restoring force, preventing the lock from quickly engaging with the keyhole. The third auxiliary component applies pressure to the self-locking structure, easily causing deformation. Excessive force on the third auxiliary component can prevent the deformed lock from returning to its original shape (self-locking effect fails), severely impacting actual usage efficiency. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is how to prevent the upper lock from deforming and becoming unable to return to its original position during installation. To this end, a self-locking retaining ring installation clamp is provided, comprising:

[0005] A bushing, which is fitted onto a mounting shaft; the mounting shaft has a groove.

[0006] A gasket that separates the upper and lower layers of a self-locking retaining ring, wherein the self-locking retaining ring includes a self-locking structure;

[0007] A press-fitting cylinder, wherein the press-fitting cylinder is provided with a relief groove, and the self-locking structure located on the upper layer is located on the movement trajectory of the relief groove;

[0008] In the first state, the bushing is fitted onto the mounting shaft;

[0009] In the second state, the gasket opens the self-locking retaining ring and fits the self-locking retaining ring onto the bushing;

[0010] In the third state, the pressing cylinder, sleeved on the bushing, moves toward the self-locking retaining ring until the pressing cylinder abuts against the self-locking retaining ring and drives the self-locking retaining ring to the upper edge of the groove; the gasket is removed, and the pressing cylinder continues to move until the self-locking retaining ring engages with the groove.

[0011] It also includes a ejector pin structure, wherein the ejector pin structure includes an ejector pin, and the ejector pin abuts against the upper surface of the upper layer of the self-locking retaining ring near the cut area.

[0012] The press-fit cylinder includes a through hole. In the fourth state, the ejector pin moves through the through hole toward the upper cut position of the self-locking retaining ring.

[0013] The ejector pin structure also includes an elastic element and an adjusting element. The ejector pin includes a lower limiting portion. The pressing cylinder has an upper chamber and a lower chamber on its side wall. The adjusting element is located in the upper chamber and cooperates with the upper end of the ejector pin. The ejector pin extends through the upper chamber to the lower chamber. The lower limiting portion is located in the lower chamber. The elastic element is located in the lower chamber and is sleeved on the ejector pin. The lower limiting portion abuts against the upper surface of the self-locking retaining ring near the cut area.

[0014] The lower limit portion is provided with an extension portion, which extends to abut against the upper cut edge of the self-locking retaining ring.

[0015] It also includes a positioning element, which is connected to the press-fit cylinder, and the lower end of the positioning element extends to abut against the upper cut edge of the self-locking retaining ring.

[0016] The bottom surface of the press-fit cylinder is provided with a positioning protrusion, and the press-fit cylinder is rotated until the positioning protrusion abuts against the upper cut edge of the self-locking retaining ring.

[0017] The bottom surface of the press cylinder is provided with a pressing part, which abuts against the self-locking retaining ring.

[0018] The bottom surface of the positioning protrusion extends beyond the bottom surface of the clamping part.

[0019] The bushing is provided with a limiting step, which abuts against the top surface of the mounting shaft, and the bottom surface of the limiting step is flush with the upper edge of the groove.

[0020] The gasket includes a partition, a connecting part, and a handle. The partition is horizontally connected to the connecting part, the handle is connected to the connecting part, and the partition extends to the self-locking retaining ring.

[0021] The technical solution of this utility model has the following advantages:

[0022] 1. The present invention provides an installation fixture for a self-locking retaining ring. The pressing cylinder, through the setting of the relief groove, prevents it from pressing down on the lock position during installation, thereby protecting the lock and ensuring that the lock structure is not damaged. This improves the convenience of installation and ensures the normal use of the product.

[0023] 2. This utility model provides an installation fixture for a self-locking retaining ring, with a pin device ensuring the upper cut position is properly installed. Alternatively, other methods can be used, such as using a tool to move down along the outer wall of the pressing cylinder to the upper surface of the self-locking retaining ring near the cut area, creating a pressure effect.

[0024] 3. The present invention provides an installation fixture for a self-locking retaining ring. With this structure, when the third state is pressed down, due to the presence of the clearance groove, the upper cut position of the self-locking retaining ring does not completely enter the groove (some part is still tilted upward). At this time, by pressing down the ejector pin, the ejector pin abuts against the upper surface near the cut area, so that the upper cut position of the self-locking retaining ring completely enters the groove.

[0025] 4. This utility model provides an installation fixture for a self-locking retaining ring. In this structure, the elastic element constantly applies a compressive force to the upper surface of the self-locking retaining ring near the notch area to prevent it from tilting. During installation, the elastic element is continuously in an energy-stored state before the bottom surface of the pressing cylinder abuts against the self-locking retaining ring. After the gasket is removed, the pressing cylinder continues to move, and the elastic element resets, allowing the upper notch of the self-locking retaining ring to quickly enter the groove. This structure provides automatic installation, saving an installation step compared to other structures and improving installation efficiency.

[0026] 5. The installation fixture for a self-locking retaining ring provided by this utility model has a positioning protrusion. When the installation shaft is located in a cavity, the installer cannot observe the position of the retaining ring. However, by rotating the pressing cylinder, when the positioning protrusion abuts against the upper cut edge of the self-locking retaining ring, the clearance groove is also located exactly above the upper self-locking structure of the self-locking retaining ring, thus achieving precise clearance.

[0027] 6. The self-locking retaining ring installation fixture provided by this utility model has a better pressing effect.

[0028] 7. The self-locking retaining ring installation fixture provided by this utility model has a limiting step, which improves the fixing stability between the bushing and the mounting shaft, facilitates the cooperation between the two, and the limiting step also plays a guiding role, allowing the self-locking retaining ring to quickly enter the groove.

[0029] 8. The present invention provides a self-locking retaining ring mounting fixture. When the mounting shaft is located in a cavity, the installer cannot observe the position of the retaining ring. With this structure, the gasket can be easily removed and disassembled. First, the gasket is moved outward along the radial direction of the mounting shaft to separate the partition from the self-locking retaining ring. Then, it is moved upward along the axial direction of the mounting shaft to quickly remove the gasket, achieving a reusable effect. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the self-locking retaining ring provided by this utility model;

[0032] Figure 2 A schematic diagram of the structure of the self-locking retaining ring provided by this utility model when it is opened;

[0033] Figure 3 This is a schematic diagram of the installation fixture for the self-locking retaining ring in Embodiment 1 of this utility model;

[0034] Figure 4 This is a cross-sectional view of the mounting fixture for the self-locking retaining ring in Embodiment 1 of this utility model;

[0035] Figure 5 This is a cross-sectional view from another angle of the self-locking retaining ring mounting fixture in Embodiment 1 of this utility model;

[0036] Figure 6 This is a schematic diagram of the structure of the self-locking retaining ring and the washer in Embodiment 1 of this utility model;

[0037] Figure 7 A schematic diagram of the structure of the gasket provided by this utility model;

[0038] Figure 8Top views and corresponding side views of different forms of the lock in the self-locking retaining ring provided by this utility model;

[0039] Figure 9 Top views of different shapes of the locking hole in the self-locking retaining ring provided by this utility model;

[0040] Figure 10 A schematic diagram of the structure of the mounting fixture for the self-locking retaining ring provided in Embodiment 2 of this utility model;

[0041] Figure 11 This is a schematic diagram of the installation fixture for the self-locking retaining ring in Embodiment 3 of this utility model;

[0042] Figure 12 This is a cross-sectional view of the mounting fixture for the self-locking retaining ring in Embodiment 3 of this utility model;

[0043] Figure 13 This is a cross-sectional view from another angle of the self-locking retaining ring mounting fixture in Embodiment 3 of this utility model;

[0044] Figure 14 A schematic diagram of the structure of the mounting fixture for the self-locking retaining ring provided in Embodiment 4 of this utility model;

[0045] Figure 15 This is a partial structural diagram of the mounting fixture for the self-locking retaining ring provided in Embodiment 4 of this utility model;

[0046] Figure 16 A cross-sectional view of the mounting fixture for the self-locking retaining ring provided in Embodiment 4 of this utility model;

[0047] Figure 17 A schematic diagram of the structure of the press-fit cylinder provided by this utility model;

[0048] Figure 18 A schematic diagram of another structure of the press-fitting cylinder provided by this utility model;

[0049] Figure 19 This is a schematic diagram of another structure of the press-fit cylinder provided by this utility model.

[0050] Explanation of reference numerals in the attached figures:

[0051] 11. Bushing; 12. Mounting shaft; 13. Self-locking retaining ring; 14. Washer; 15. Press-fitting cylinder; 16. Ejector pin; 17. Elastic element; 18. Positioning element; 111. Limiting step; 121. Groove; 131. Lock; 132. Lock hole; 133. Cutout; 141. Divider; 142. Connecting part; 143. Handle; 151. Relief groove; 152. Upper chamber; 153. Lower chamber; 154. Positioning protrusion; 155. Pressing part; 156. Through hole; 161. Adjusting element; 162. Lower limit part; 163. Extension part. Detailed Implementation

[0052] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0053] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0056] Example 1

[0057] This embodiment provides a self-locking retaining ring mounting fixture, as shown in the attached figure. Figures 1-9 As shown, it includes:

[0058] A bushing 11 is fitted onto a mounting shaft 12. The mounting shaft 12 has a groove 121, into which the self-locking retaining ring 13 is ultimately installed. It should be noted that the shaft diameter of the mounting shaft 12 is larger than the groove diameter of the groove 121. When the self-locking retaining ring 13 is installed in the groove 121, i.e., when the self-locking structure is working, the inner diameter of the self-locking retaining ring 13 is larger than the groove diameter of the groove 121, but smaller than the shaft diameter of the mounting shaft 12. In this case, the self-locking retaining ring 13 cannot detach from the groove 121.

[0059] The washer 14 separates the upper and lower layers of the self-locking retaining ring 13. The self-locking retaining ring 13 includes a self-locking structure comprising a lock 131 and a lock hole 132. In its free state (uninstalled), the lock 131 is located inside the lock hole 132. At this time, the inner diameter of the self-locking retaining ring 13 is smaller than the diameter of the mounting shaft 12. If the self-locking retaining ring 13 is to be fitted onto the bushing 11, its inner diameter needs to be increased. In this case, the lock 131 will disengage from the lock hole 132 and slide outside. The washer 14 separates the upper and lower layers of the self-locking retaining ring 13, allowing the lock 131 to move outside the lock hole 132 (by increasing the inner diameter of the self-locking retaining ring 13), before the washer 14 is fitted onto the bushing 11.

[0060] The pressing cylinder 15 is provided with a relief groove 151. The self-locking structure located on the upper layer is situated on the movement trajectory of the relief groove 151. That is, when the pressing cylinder 15 is pressed down, the lock 131 and lock hole 132 located on the upper layer are on the movement trajectory of the relief groove 151, and the top surface of the relief groove 151 will not apply pressure to the lock 131 and lock hole 132 to make contact. In this embodiment, the length of the relief groove 151 can be equal to the length of the lock hole 132 from the side away from the cut 133 to the edge of the cut 133, or the length of the relief groove 151 can be greater than the length of the lock hole 132 from the side away from the cut 133 to the edge of the cut 133.

[0061] In the first state, the bushing 11 is fitted onto the mounting shaft 12. Here, the bushing 11 has a guiding effect. The shaft diameter of the bushing 11 is larger than the shaft diameter of the mounting shaft 12, but it cannot be infinitely large. Those skilled in the art can adjust the shaft diameter of the bushing 11 according to actual needs so that the bushing 11 can better play a guiding role.

[0062] In the second state, the washer 14 opens the self-locking retaining ring 13. The function of the washer 14 is to separate the upper and lower layers of the self-locking retaining ring 13, so that the lock 131 can move to the outside of the lock hole 132 (increasing the inner diameter of the self-locking retaining ring 13), and the self-locking retaining ring 13 is fitted onto the bushing 11. At this time, the washer 14 still cooperates with the self-locking retaining ring 13.

[0063] In the third state, the pressing cylinder 15, fitted onto the bushing 11, moves toward the self-locking retaining ring 13. In this embodiment, the pressing cylinder 15 moves downward along the axial direction of the bushing 11, that is, the pressing cylinder 15 moves along the bushing 11 until the pressing cylinder 15 abuts against the self-locking retaining ring 13. Specifically, this abuts means that the bottom surface of the pressing cylinder 15 abuts against the upper layer of the self-locking retaining ring 13 (the clearance groove 151 engages with the self-locking structure), and the pressing cylinder 15 drives the self-locking retaining ring 13 to move to the upper edge of the groove 121. The gasket 14 is removed, and at this time, the double-layer structure of the self-locking retaining ring 13 re-fits. The pressing cylinder 15 continues to move until the self-locking retaining ring 13 engages with the groove 121.

[0064] The press-fit cylinder 15, through the setting of the relief groove 151, prevents it from pressing down to the lock 131 position during installation, thus protecting the lock 131 and ensuring that the structure of the lock 131 is not damaged, improving the convenience of installation and ensuring the normal use of the product.

[0065] Specifically, as shown in the attached document Figures 1-7 As shown, it also includes a ejector pin structure, which includes an ejector pin 16. The ejector pin 16 abuts against the upper surface of the self-locking retaining ring 13 near the cut 133. The ejector pin 16 ensures that the upper cut 133 is properly installed. Due to the setting of the relief groove 151, the upper part of the self-locking retaining ring 13, that is, the section from the upper part of the self-locking retaining ring 13 abutting against the side wall of the relief groove 151 to the upper cut 133 of the self-locking retaining ring 13, will tilt upwards because no pressure is applied, and cannot enter the groove 121. By the action of the ejector pin 16, this length can be inserted into the groove 121, completing the assembly of the self-locking retaining ring 13. It should also be noted that when most of the self-locking retaining ring 13 (except for the area from the upper lock hole 132 to the upper cut 133) enters the groove 121, the lock 131 that mates with the upper lock hole 132 will first reset (when the self-locking retaining ring 13 enters the groove 121, the groove diameter is smaller than the shaft diameter of the bushing 11, and the self-locking retaining ring 13 will contract), the lock 131 will then be located axially below the upper lock hole 132. At this time, the ejector pin 16 will work without damaging the structure of the lock 131. Alternatively, other methods can be used, such as moving a tool along the outer wall of the press-fitting cylinder 15 to above the cut 133 to create a pressure effect.

[0066] Specifically, as shown in the attached document Figures 1-7As shown, the ejector pin structure also includes an elastic element 17 and an adjusting element 161. The ejector pin 16 includes a lower limiting part 162. The pressing cylinder 15 has an upper chamber 152 and a lower chamber 153 on its side wall. The adjusting element 161 is located in the upper chamber 152. The adjusting element 161 cooperates with the upper end of the ejector pin 16 to form an adjustment effect. For example, the adjusting element 161 and the ejector pin 16 are connected by a thread. The adjusting element 161 is a nut. By adjusting the nut, the force applied to the upper surface of the self-locking retaining ring 13 near the cut 133 can be adjusted to ensure that the pressure does not cause plastic deformation of the lock 131, that is, the height of the lock 131 is pressed down. In addition, it can also be used for position adjustment. The ejector pin 16 has several position holes. The adjusting element 161 slides relative to the ejector pin 16 and can cooperate with different position holes. The ejector pin 16 extends through the upper chamber 152 to the lower chamber 153, and the lower limiting portion 162 is housed in the lower chamber 153. The ejector pin 16 can move axially relative to the press-fit cylinder 15, that is, the ejector pin 16 can move vertically up and down. The lower limiting portion 162 abuts against the upper cut 133 of the self-locking retaining ring 13. Due to the movement of the ejector pin 16, the lower limiting portion 162 can also move outside the lower chamber 153. The elastic element 17 is located in the lower chamber 153 and is sleeved on the ejector pin 16. The lower end of the elastic element 17 abuts against the lower limiting portion 162. When the press-fit cylinder 15 continues to move downward along the axial direction, the lower limiting portion 162 abuts against the upper surface of the self-locking retaining ring 13 near the cut 133 area. The ejector pin 16 moves upward, which compresses the elastic element 17, causing the elastic element 17 to continuously store energy. In this structure, the elastic element 17 constantly applies a compressive force to the upper surface of the self-locking retaining ring 13 near the cut 133 area to prevent it from warping. During installation, the elastic element 17 is in a continuously energized state before the bottom surface of the pressing cylinder 15 abuts against the self-locking retaining ring 13. After the gasket 14 is removed, the pressing cylinder 15 continues to move, and the elastic element 17 resets, allowing the upper cut 133 of the self-locking retaining ring 13 to quickly enter the groove 121. This structure provides automatic installation, saving an installation step compared to other structures and improving installation efficiency. It should be noted that the elasticity of the elastic element 17 will not deform the lock 131. Those skilled in the art can design the elasticity value of the elastic element 17 according to actual conditions to ensure that the lock 131 is not damaged while applying pressure. In this embodiment, the elastic element 17 can be a spring, an elastic rubber pad, an elastic silicone pad, or other elastic materials. During installation, the adjusting part 161 or the lower limit part 162 is set separately from the ejector pin 16. Only after the elastic part 17 is installed is it connected and fixed with the ejector pin 16.

[0067] Specifically, as shown in the attached document Figures 1-7As shown, the lower limit portion 162 is provided with an extension portion 163, which extends to abut against the edge of the upper cut 133 of the self-locking retaining ring 13. In this embodiment, the cross-section of the lower limit portion 162 is a U-shaped structure, that is, part of the lower limit portion 162 abuts against the upper surface of the self-locking retaining ring 13 near the cut 133, and the extension portion 163 is vertically downward, so that the extension portion 163 abuts against the edge of the upper cut 133 of the self-locking retaining ring 13, thereby achieving the effect of positioning and fixing. When the mounting shaft 12 is located in a chamber, the installer cannot observe the position of the retaining ring. In this case, the pressure cylinder 15 can be rotated. Since the pressure cylinder 15 and the ejector structure are linked, when the pressure cylinder 15 rotates, the ejector structure also rotates accordingly until the extension portion 163 abuts against the edge of the upper cut 133 of the self-locking retaining ring 13, thus achieving precise positioning. The remaining part of the lower limit portion 162 abuts against the upper surface of the self-locking retaining ring 13 near the cut 133.

[0068] Specifically, as shown in the attached document Figures 1-7 As shown, the bottom surface of the press cylinder 15 is provided with a pressing part 155, which abuts against the self-locking retaining ring 13. The relief groove 151 is connected to the lower chamber 153, and the relief groove 151 passes through the pressing part 155 axially downward.

[0069] Specifically, as shown in the attached document Figures 1-7 As shown, the bottom surface of the extension 163 extends beyond the bottom surface of the clamping part 155. In this embodiment, the extension 163 abuts against the edge of the cut 133, and the clamping part 155 abuts against the upper surface of the self-locking retaining ring 13 near the area of ​​the cut 133, with a height difference between the two.

[0070] Specifically, as shown in the attached document Figures 1-7 As shown, the bushing 11 is provided with a limiting step 111, which abuts against the mounting shaft 12. Here, the limiting step 111 abuts against the top surface of the mounting shaft 12, and the bottom surface of the limiting step 111 is flush with the upper edge of the groove 121. The limiting step 111 improves the fixing stability between the bushing 11 and the mounting shaft 12, facilitating their engagement. At this time, the bottom surface of the bushing 11 is flush with the upper edge of the groove 121, and they are coplanar. This means that once the self-locking retaining ring 13 passes the bottom surface of the bushing 11, it can enter the groove 121, serving as a guide.

[0071] Specifically, as shown in the attached document Figure 7As shown, the gasket 14 includes a partition 141, a connecting portion 142, and a handle 143. The partition 141 is horizontally connected to the connecting portion 142, and the handle 143 is connected to the connecting portion 142. The partition 141 extends to the self-locking retaining ring 13. When the mounting shaft 12 is located in a chamber, the installer cannot observe the position of the retaining ring. This structure of the gasket 14 facilitates removal and disassembly. First, the gasket 14 is moved outward along the radial direction of the mounting shaft 12, separating the partition 141 from the self-locking retaining ring 13. Then, it is moved upward along the axial direction of the mounting shaft 12, allowing the gasket 14 to be quickly removed, achieving a reusable effect. Furthermore, since the partition 141 is inserted between the two layers of the self-locking retaining ring 13, it is necessary to ensure that the raised height at the cut 133 is greater than the height of the lock 131 to avoid pressing on the lock 131 and lowering its height. Furthermore, the position of the self-locking retaining ring 13 can be determined by observing the height of the handle 143, thereby improving the judgment and allowing for better observation of whether the self-locking retaining ring 13 has moved to the upper edge of the groove 121. The handle 143 and the connecting part 142 can be vertically connected or obliquely connected.

[0072] Specifically, there are two partitions 141, each corresponding to one of the two cutouts 133. In this embodiment, the gasket 14 is integrally formed. Alternatively, there can be two gaskets 14 with identical structures, each corresponding to one cutout 133. The gasket 14 can be made of metal, plastic, or a flexible material such as steel wire. Furthermore, the partitions 141 and the connecting parts 142 can be detachably connected, for example, by using bolts or clips to secure them together.

[0073] Specifically, as shown in the attached document Figures 8-9 As shown, the lock 131 can be in the form of an oblique strip, a cylinder, a frustum, a trapezoid, a protrusion, etc. The lock hole 132 can also be in the form of an arc-shaped hole, an outward-facing notch, a round hole, etc. Those skilled in the art can adjust it according to actual needs to achieve a self-locking effect.

[0074] Example 2

[0075] This embodiment provides a self-locking retaining ring mounting fixture, as shown in the attached figure. Figure 10As shown, the difference between Embodiment 2 and Embodiment 1 lies in the positioning structure. Embodiment 1 uses an extension for positioning, while this embodiment uses a positioning element 18. The embodiment also includes a positioning element 18, which is connected to the press-fit cylinder 15. The lower end of the positioning element 18 extends to abut against the edge of the upper cut 133 of the self-locking retaining ring 13. In this embodiment, the upper end of the positioning element 18 is connected to the press-fit cylinder 15, or it can extend through the lower chamber 153 to the upper chamber 152 for fixation. The lower end of the positioning element 18 extends downward through the lower chamber 153 and the clearance groove 151, abutting against the edge of the upper cut 133 of the self-locking retaining ring 13. Here, the positioning element 18 can be an elastic structure, such as a spring or a plastic sheet. When the mounting shaft 12 is located in one chamber, the installer cannot observe the position of the retaining ring. Precise positioning can be achieved by rotating the press-fit cylinder 15 until the lower end of the positioning element 18 abuts against the edge of the upper cut 133 of the self-locking retaining ring 13. In addition, the lower end of the positioning member 18 abuts against the side of the lower limit portion 162. In this embodiment, the lower limit portion 162 does not have this structural feature of an extension.

[0076] Specifically, the positioning element 18 is an elastic structure, 1. flexibly positioning the upper cut; 2. the upper cut can move to the right (along the circumference) together with the positioning element 18, which facilitates the installation of the self-locking retaining ring 13 into the groove.

[0077] Example 3

[0078] This embodiment provides a self-locking retaining ring mounting fixture, as shown in the attached figure. Figures 11-13 As shown, the difference between Embodiment 3 and Embodiment 1 lies in the positioning structure. Embodiment 1 uses an extension 163 for positioning, while this embodiment uses a positioning protrusion 154. The bottom surface of the press-fit cylinder 15 has a positioning protrusion 154, which is a part of the press-fit cylinder 15. The press-fit cylinder 15 rotates until the positioning protrusion 154 abuts against the edge of the upper cut 133 of the self-locking retaining ring 13. With the positioning protrusion 154, when the mounting shaft 12 is located in a chamber, the installer cannot observe the position of the retaining ring. Therefore, by rotating the press-fit cylinder 15, when the positioning protrusion 154 abuts against the edge of the upper cut 133 of the self-locking retaining ring 13, the clearance groove 151 is also precisely positioned above the upper self-locking structure of the self-locking retaining ring 13, achieving precise clearance.

[0079] Specifically, as shown in the attached document Figures 11-13 As shown, the bottom surface of the pressing cylinder 15 is provided with a pressing part 155, which abuts against the self-locking retaining ring 13, and the clearance groove 151 is located between the positioning protrusion 154 and the pressing part 155. The pressing part 155 better achieves a pressing effect.

[0080] Specifically, as shown in the attached document Figures 11-13As shown, the bottom surface of the positioning protrusion 154 extends beyond the bottom surface of the pressing part 155. In this embodiment, the positioning protrusion 154 abuts against the edge of the cut 133, and the pressing part 155 abuts against the top surface of the cut 133, with a height difference between the two.

[0081] Example 4

[0082] This embodiment provides a self-locking retaining ring mounting fixture, as shown in the attached figure. Figures 14-19 As shown, in this embodiment, the difference between Embodiment 4 and Embodiment 1 lies in the different ejector pin structures and the different structures in which the ejector pin structure cooperates with the press cylinder 15.

[0083] Specifically, the press-fit cylinder 15 includes a through hole 156, which axially penetrates the press-fit cylinder 15. In the fourth state, the ejector pin 16 passes through the through hole 156 and moves toward the upper cut 133 of the self-locking retaining ring 13. With this structure, when the cylinder is pressed down in the third state, due to the presence of the relief groove 151, the upper cut 133 of the self-locking retaining ring 13 does not completely enter the groove 121 (a portion of it is still tilted upwards, forming a raised effect). At this time, by pressing down with the ejector pin 16, the upper cut 133 of the self-locking retaining ring 13 is completely inserted into the groove 121. It should also be noted that when most of the self-locking retaining ring 13 (except for the area from the upper lock hole 132 to the upper cut 133) enters the groove 121, the lock 131 that mates with the upper lock hole 132 will first reset (when the self-locking retaining ring 13 enters the groove 121, the groove diameter is smaller than the shaft diameter of the bushing 11, and the self-locking retaining ring 13 will shrink), that is, it will be located axially below the upper lock hole 132. At this time (that is, the fourth state), the ejector pin 16 works without damaging the structure of the lock 131. In this embodiment, the upper end of the through hole 156 is a countersunk hole structure, and the top of the ejector pin 16 is also provided with a stepped protrusion. The stepped protrusion and the countersunk hole cooperate to form a limiting effect.

[0084] As attached Figure 18 As shown, there is one clearance groove 151, which is mainly for the left-hand self-locking retaining ring 13;

[0085] As attached Figure 19 As shown, there is one relief groove 151. The difference between it and the left-hand self-locking retaining ring 13 mentioned above is that the relief groove 151 is in a different position. This mainly refers to the right-hand self-locking retaining ring 13.

[0086] As attached Figure 17 As shown, the number of clearance slots 151 can also be two, allowing for the installation of both left-hand and right-hand self-locking retaining rings 13, achieving a universal effect. It should be noted that when the position of the clearance slot 151 changes, the corresponding ejector pin 16 also needs to be adjusted accordingly.

[0087] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A mounting jig for a self-locking retaining ring (13), characterized in that, include: A bushing (11) is fitted onto a mounting shaft (12); the mounting shaft (12) is provided with a groove (121); Gasket (14), wherein the gasket (14) separates the upper and lower layers of the self-locking retaining ring (13), wherein the self-locking retaining ring (13) includes a self-locking structure; Pressing cylinder (15), the pressing cylinder (15) is provided with a relief groove (151), and the self-locking structure located on the upper layer is located on the movement trajectory of the relief groove (151); In the first state, the bushing (11) is sleeved on the mounting shaft (12); In the second state, the gasket (14) opens the self-locking retaining ring (13) and puts the self-locking retaining ring (13) onto the bushing (11); In the third state, the pressing cylinder (15) is sleeved on the bushing (11) and moves toward the self-locking retaining ring (13) until the pressing cylinder (15) abuts against the self-locking retaining ring (13) and drives the self-locking retaining ring (13) to move to the upper edge of the groove (121); the gasket (14) is removed, and the pressing cylinder (15) continues to move until the self-locking retaining ring (13) engages with the groove (121).

2. The mounting jig for a self-locking check ring according to claim 1, wherein It also includes a ejector pin structure, which includes an ejector pin (16) that abuts against the upper surface of the upper layer of the self-locking retaining ring (13) near the cut (133).

3. The mounting jig for a self-locking check ring according to claim 2, wherein The press-fit cylinder (15) includes a through hole (156). In the fourth state, the ejector pin (16) moves through the through hole (156) toward the upper cut (133) of the self-locking retaining ring (13).

4. The mounting jig for a self-locking check ring according to claim 2, wherein The ejector pin structure also includes an elastic element (17) and an adjusting element (161). The ejector pin (16) includes a lower limiting part (162). The pressing cylinder (15) has an upper chamber (152) and a lower chamber (153) on its side wall. The adjusting element (161) is located in the upper chamber (152) and cooperates with the upper end of the ejector pin (16). The ejector pin (16) extends through the upper chamber (152) to the lower chamber (153). The lower limiting part (162) is located in the lower chamber (153). The elastic element (17) is located in the lower chamber (153) and is sleeved on the ejector pin (16). The lower limiting part (162) abuts against the upper surface of the self-locking retaining ring (13) near the cut (133).

5. The mounting jig for a self-locking check ring according to claim 4, wherein The lower limit portion (162) is provided with an extension portion (163), which extends to abut against the edge of the upper cut (133) of the self-locking retaining ring (13).

6. The mounting jig for a self-locking check ring according to claim 1, wherein It also includes a positioning element (18), which is connected to the press-fit cylinder (15), and the lower end of the positioning element (18) extends to abut against the edge of the upper cut (133) of the self-locking retaining ring (13).

7. The mounting jig for a self-locking check ring according to claim 1, wherein The bottom surface of the press cylinder (15) is provided with a positioning protrusion (154), and the press cylinder (15) is rotated until the positioning protrusion (154) abuts against the edge of the upper cut (133) of the self-locking retaining ring (13).

8. The mounting jig for a self-locking check ring according to claim 5 or 6 or 7, characterized in that, The bottom surface of the press cylinder (15) is provided with a pressing part (155), which abuts against the self-locking retaining ring (13).

9. The mounting jig for a self-locking check ring according to claim 1, wherein The bushing (11) is provided with a limiting step (111), which abuts against the top surface of the mounting shaft (12), and the bottom surface of the limiting step (111) is flush with the upper edge of the groove (121).

10. The mounting jig for a self-locking check ring according to claim 1, wherein The gasket (14) includes a partition (141), a connecting part (142), and a handle (143). The partition (141) is horizontally connected to the connecting part (142), and the handle (143) is connected to the connecting part (142). The partition (141) extends to the self-locking retaining ring (13).

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