High load injection molded rod end bearing

Abstract

This invention provides a high-load injection-molded rod end spherical plain bearing, relating to the field of spherical plain bearing technology. It includes an injection-molded rod end body, comprising a bearing seat, an upper connecting part, a lower connecting part, and a foot. The upper connecting part is inserted inside the lower connecting part, and the distance between them is fine-tuned by an adjusting component within an adjusting section, thereby adjusting the length of the rod end body. After adjustment, adhesive is injected through an injection channel located between the foot and the upper connecting part to perform a secondary tightening of the finely adjusted structure, significantly improving the load-bearing capacity and stability of the rod end body. This invention, through the combination of a finely adjustable rod end body structure and adhesive injection reinforcement, improves the load-bearing capacity, structural stability, and adaptability to complex working conditions of the spherical plain bearing.

Description

Technical Field

[0001] This invention relates to the field of spherical bearing technology, and in particular to a high-load injection-molded rod end spherical bearing. Background Technology

[0002] As a key basic mechanical component, rod end bearings are widely used in linkages, push rods and support mechanisms in fields such as robotics, precision instruments, engineering machinery, and automobiles. They are used to connect components and transmit motion and force, while allowing a certain degree of angular oscillation.

[0003] Currently, in equipment using spherical plain bearings, unpredictable minor settlement may occur in the mounting foundation of the rod end bearing during long-term operation, or wear may occur in the connecting parts due to long-term vibration and impact. These factors can cause micron- or millimeter-level deviations in the relative positions between equipment components. The traditional solution is to compensate by replacing metal shims of different thicknesses or re-processing the connecting parts after shutdown. This process is cumbersome, time-consuming, and highly dependent on the operator's experience, making it difficult to guarantee compensation accuracy. Adjustable rod end bearings, on the other hand, adjust the length of the rod end body of the spherical plain bearing through thread adjustment. However, when applied to the rod end body of injection-molded parts, this adjustment can easily create a large internal cavity, affecting the overall load capacity of the spherical plain bearing. Furthermore, the lack of a secondary fastening matrix makes the threaded pair prone to loosening under continuous vibration or impact, which can lead to a decrease in preload and a gradual increase in the connection gap of the spherical plain bearing, thus affecting the accuracy of the equipment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a high-load injection-molded rod end spherical bearing, which improves the load strength, structural stability and adaptability to complex working conditions by combining a rod end body structure with micro-adjustable length with injection molding reinforcement.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] A high-load injection-molded rod end spherical bearing includes a bearing body, comprising: an injection-molded rod end body;

[0007] The rod end body includes: a bearing seat portion, an upper connecting portion, a lower connecting portion, and a foot portion. The bearing seat portion is used for mounting a bearing body. The upper connecting portion is integrally formed with the bearing seat portion and is inserted into the lower connecting portion. The bottom of the lower connecting portion is provided with a foot portion, and the surface of the lower connecting portion is provided with an adjustment portion. The lower connecting portion is internally threaded with an adjustment thread pair. The upper connecting portion is inserted into the adjustment thread pair, and the bottom surface of the adjustment thread pair abuts against the internal bottom surface of the adjustment thread pair. The lower connecting portion is integrally formed with the adjustment portion, and the lower connecting portion and the adjustment portion are internally provided with an adjustment element. The distance between the upper connecting portion and the lower connecting portion is adjusted by the adjustment element to adjust the overall length of the rod end body.

[0008] The rod end body is provided with an injection channel between the foot and the upper part of the joint. After the length of the rod end body is adjusted, the rod end body is tightened again by injecting glue into the injection channel to improve the load strength of the rod end body.

[0009] Furthermore, the bottom surface of the upper part of the joint is integrally formed with a plurality of first threaded tubes, and the surface of the lower part of the joint is integrally formed with an insertion sleeve corresponding to the number of the first threaded tubes. The first threaded tubes are slidably connected in the corresponding insertion sleeves. A first lead screw is inserted into a first slot on the surface of the insertion sleeve. The first lead screw is threadedly connected to the corresponding first threaded tube. A plurality of second lead screws are arranged in a circular array on the surface of the foot. The second lead screws are inserted into corresponding second slots on the surface of the foot. The bottom surface of the lower part of the joint is provided with a second threaded groove corresponding to the second lead screw. The second lead screw is threadedly connected to the lower part of the joint through the corresponding second threaded groove.

[0010] Furthermore, the adjusting component includes: a first rectangular groove communicating with the interior of the lower connecting part is provided inside the adjusting part; a rack is slidably connected in the first rectangular groove starting inside the adjusting part; an adjusting screw is rotatably connected in the first circular hole on the surface of the adjusting part through a first bearing; the adjusting screw is threadedly connected in the first threaded groove starting inside the rack; teeth are arranged in a ring array near the bottom position on the surface of the adjusting threaded pair; the teeth are integrally formed with the adjusting threaded pair; the rack is meshed with the teeth; and the teeth are slidably connected to the rack along the axial direction of the adjusting threaded pair.

[0011] Furthermore, the bottom surface of the upper part of the joint is fixedly connected with several C-shaped blocks in a ring array, the upper surface of the lower part of the joint is provided with a first constraint groove corresponding to the C-shaped blocks, the surface of the C-shaped blocks is symmetrically provided with protrusions, the inner wall of the first constraint groove is symmetrically provided with a second constraint groove, the bottom surface of the upper part of the joint is fixedly connected with an apron, and the apron is slidably connected to the lower part of the joint.

[0012] Furthermore, the dispensing channel includes:

[0013] A first channel is formed on the bottom surface of the upper part of the joint. The first channel is connected to the interior of one of the first threaded tubes and is used to inject adhesive into the interior of the corresponding first threaded tube and enter between the upper part of the joint and the lower part of the joint through the first channel.

[0014] Several glue flow channels are provided and arranged in a circular array on the surface of the adjusting threaded pair. Each glue flow channel has a first through hole inside, which allows the glue flowing out from the first channel to flow through the glue flow channel and the first through hole to the gap between the adjusting threaded pair and the lower part of the joint.

[0015] The second channel is formed inside the first constraint groove. The inner wall of the lower part of the joint is provided with an arc-shaped groove. The second channel and the interior of the arc-shaped groove are connected to each other, so that the glue flowing out from the first channel can flow through the second channel and the arc-shaped groove to the interior of the lower part of the joint.

[0016] The third channel is formed inside the second threaded groove. The diameter of the third channel is smaller than the diameter of the second threaded groove. The third channel is connected to the inside of the arc-shaped groove.

[0017] Furthermore, a support ring is provided between the upper and lower parts of the joint, and the C-shaped block is inserted into a corresponding clearance hole opened on the surface of the support ring. The upper surface of the support ring abuts against the bottom surface of the upper part of the joint, and the bottom surface of the support ring abuts against the lower part of the joint.

[0018] An elastic ring is provided inside the lower part of the joint. The upper surface of the foot, the bottom surface of the adjusting thread pair, and the inner wall surface of the lower part of the joint all abut against the elastic ring. The elastic ring is elastic. When the foot is fixedly connected to the lower part of the joint through the second screw, the elastic ring undergoes elastic deformation.

[0019] When the rod end body has not been adjusted in length for the first time, the elastic deformation of the elastic ring makes the adjusting thread pair less likely to rotate, and the setting of the support ring keeps the upper part of the connection and the lower part of the connection stable.

[0020] Before applying the adhesive, the support ring and the elastic ring are removed from the inside of the rod end body.

[0021] Furthermore, a connecting claw is fixedly connected to the upper surface of the foot, and the connecting claw is located inside the elastic ring.

[0022] Furthermore, the number of the first threaded tube, the insertion sleeve, and the first lead screw is at least three sets, and at least two sets are symmetrical about the central axis of the lower part of the joint;

[0023] The number of the second lead screws is at least four, and at least two of the second lead screws are symmetrical about the central axis of the lower part of the joint.

[0024] The above-described solution of the present invention has at least the following beneficial effects:

[0025] The above-mentioned solution of the present invention adjusts the distance between the upper and lower parts of the joint by adjusting the adjusting component, so that the overall length of the rod end body is adjustable, so as to effectively release or redistribute the internal stress caused by stress, thermal expansion, etc., thereby improving the applicability and service life of the joint bearing.

[0026] Secondary fastening is achieved by injecting glue through the glue injection channel. The glue fills the gaps in each part and forms a uniform reinforcement layer after solidification, thereby enhancing the overall load-bearing capacity and anti-loosening ability of the pole end.

[0027] By using C-shaped blocks, protrusions, and the first and second constraint grooves in conjunction with the sealing design of the apron edge, the connection stability and torsional resistance between the upper and lower parts of the joint are improved while facilitating assembly and adjustment.

[0028] The design of multiple channels, including the first channel, glue flow groove, second channel, arc groove, and third channel, ensures that the glue can penetrate evenly into the internal cavity of the rod end body, reducing the formation of cavities after the glue solidifies, and improving the bonding strength and structural consistency.

[0029] The rod end body is injection molded, which facilitates improved manufacturing efficiency, reduced costs, and is suitable for mass production. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure provided by the present invention.

[0031] Figure 2 This is a schematic diagram of the first lead screw in this invention.

[0032] Figure 3 This is a schematic diagram of the second lead screw in this invention.

[0033] Figure 4 This is a schematic diagram of the adjusting threaded pair in this invention.

[0034] Figure 5 This is a schematic diagram of the adjusting lead screw in this invention.

[0035] Figure 6 This is a schematic diagram of the protrusions in this invention.

[0036] Figure 7 This is a schematic diagram of the first channel in this invention.

[0037] Figure 8 This is a schematic diagram of the C-shaped block in this invention.

[0038] Figure 9 This is the present invention. Figure 4 Enlarged view of point A in the middle.

[0039] Figure 10 This is the present invention. Figure 8 Enlarged view of point B in the middle.

[0040] In the diagram: 101, bearing body;

[0041] 201. Bearing housing; 202. Upper part of the joint; 203. Lower part of the joint; 204. Foot; 205. Adjustment part; 206. Insertion sleeve; 207. First threaded tube; 208. First lead screw; 209. Second lead screw; 210. Adjusting threaded pair; 211. Tooth; 212. Rack; 213. Adjusting lead screw; 214. Glue flow groove; 215. First through hole; 216. C-block; 217. Protrusion; 218. First constraint groove; 219. Second constraint groove; 220. Skirt edge; 222. Second threaded groove;

[0042] 301, First channel; 302, Second channel; 303, Arc groove; 304, Third channel; 305, Support ring; 307, Connecting claw; 308, Elastic ring. Detailed Implementation

[0043] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0044] like Figures 1 to 10 As shown, an embodiment of the present invention provides a high-load injection-molded rod end spherical bearing, including a bearing body 101, comprising: an injection-molded rod end body;

[0045] The rod end body includes: a bearing seat portion 201, an upper connecting portion 202, a lower connecting portion 203, and a foot portion 204. The bearing seat portion 201 is used for mounting the bearing body 101. The upper connecting portion 202 is integrally formed with the bearing seat portion 201 and is inserted into the lower connecting portion 203. The bottom of the lower connecting portion 203 is provided with a foot portion 204. The surface of the lower connecting portion 203 is provided with an adjustment portion 205. The lower connecting portion 203 is internally threaded with an adjustment thread pair 210. The upper connecting portion 202 is inserted into the adjustment thread pair 210, and the bottom surface of the adjustment thread pair 210 abuts against the internal bottom surface of the adjustment thread pair 210. The lower connecting portion 203 is integrally formed with the adjustment portion 205. The lower connecting portion 203 and the adjustment portion 205 are internally provided with an adjustment element. The distance between the upper connecting portion 202 and the lower connecting portion 203 is adjusted by the adjustment element to adjust the overall length of the rod end body.

[0046] An adhesive injection channel is provided at the base 204 and the upper part 202 of the rod end. After the length of the rod end is adjusted, adhesive is injected into the adhesive injection channel to tighten the finely adjusted rod end a second time, thereby improving the load-bearing capacity of the rod end.

[0047] In this embodiment of the invention, during use, the upper part 202 and the lower part 203 are fixed. Before the first fine adjustment, the length of the rod end body is a fixed length. The bearing body 101 and the foot 204 are respectively installed at the corresponding rod end or drive shaft end. This is one of the usage states of the invention.

[0048] When the rod or shaft connected by the present invention undergoes deformation, bending, or thermal expansion due to long-term use, resulting in significant internal stress, this internal stress is released or redistributed by finely adjusting the length of the rod end. Specifically, the position of the adjusting thread pair 210 inside the lower joint 203 is adjusted by the adjusting part 205 and the adjusting member inside the lower joint 203, thereby adjusting the distance between the upper joint 202 and the lower joint 203, and thus adjusting the overall length of the rod end. To further maintain the adjusted length and load-bearing capacity of the rod end, a secondary tightening is performed on the adjusted rod end by using a pre-reserved glue injection channel inside the rod end, thereby enhancing the stability and load-bearing capacity of the rod end.

[0049] The bottom surface of the upper part 202 is integrally formed with several first threaded tubes 207. The surface of the lower part 203 is integrally formed with insertion sleeves 206 corresponding to the number of first threaded tubes 207. The first threaded tubes 207 are slidably connected in the corresponding insertion sleeves 206. A first lead screw 208 is inserted into a first slot on the surface of the insertion sleeve 206. The first lead screw 208 is threadedly connected to the corresponding first threaded tube 207. The surface of the foot 204 is arranged in a ring array with several second lead screws 209. The second lead screws 209 are inserted into the corresponding second slots on the surface of the foot 204. The bottom surface of the lower part 203 is provided with a second threaded groove 222 corresponding to the second lead screw 209. The second lead screw 209 is threadedly connected to the lower part 203 through the corresponding second threaded groove 222.

[0050] In this embodiment of the invention, the connection between the upper part 202 and the lower part 203 is achieved by inserting the upper part 202 into the adjusting threaded pair 210 inside the lower part 203, while simultaneously inserting the first threaded tube 207 into the corresponding insertion sleeve 206, and inserting the corresponding first lead screw 208 into the insertion sleeve 206 and threadedly connecting it to the first threaded tube 207. The adjusting threaded pair 210 is threadedly connected inside the lower part 203, and before the first fine adjustment, the adjusting threaded pair 210 can move along the lower part 203. The axial direction of 3 can be moved upward or downward by a certain distance, which facilitates the fine adjustment of the length of the rod end body. In this embodiment, after the upper part 202 is fixed with the lower part 203 through the cooperation of the first lead screw 208, the first threaded tube 207 and the insertion sleeve 206, and before the first fine adjustment by the fine adjustment component, the position of the adjusting thread pair 210 is the initial position. The inner bottom surface of the adjusting thread pair 210 located in the initial position abuts against the upper part 202, so as to keep the relative position of the upper part 202 and the lower part 203 stable.

[0051] The adjusting component includes: an adjusting part 205 with a first rectangular groove communicating with the lower part 203; a rack 212 slidably connected in the first rectangular groove inside the adjusting part 205; an adjusting screw 213 rotatably connected in the first circular hole on the surface of the adjusting part 205 via a first bearing; the adjusting screw 213 threadedly connected in the first threaded groove inside the rack 212; and teeth 211 arranged in a ring array near the bottom of the surface of the adjusting threaded pair 210. The teeth 211 are integrally formed with the adjusting threaded pair 210, and the rack 212 meshes with the teeth 211. The teeth 211 are slidably connected with the rack 212 along the axial direction of the adjusting threaded pair 210.

[0052] In this embodiment of the invention, when adjusting the adjusting threaded pair 210, firstly, all the first lead screws 208 are removed from the inside of the insertion sleeve 206. Then, by rotating the adjusting lead screw 213, the rack 212 moves within the first rectangular groove. During this process, the rack 212 drives the adjusting threaded pair 210 to rotate. The rotation of the adjusting threaded pair 210, through its threaded engagement with the lower engagement part 203, causes the adjusting threaded pair 210 to move axially along the lower engagement part 203, i.e., the teeth 211... Sliding along the tooth groove of the rack 212, after adjustment, the distance between the lower engagement 203 and the upper engagement 202 is kept stable by the self-locking force between the threads of the rack 212 and the adjusting screw 213 and the self-locking force between the threads of the adjusting threaded pair 210 and the lower engagement 203. Then, the first screw 208 is reinstalled into the corresponding insertion sleeve 206 and the first threaded tube 207 to fix the adjusted lower engagement 203 and upper engagement 202. At this time, the fine adjustment action is completed.

[0053] The bottom surface of the upper part 202 is fixedly connected with several C-shaped blocks 216 in a ring array. The upper surface of the lower part 203 is provided with a first constraint groove 218 corresponding to the C-shaped blocks 216. The surface of the C-shaped blocks 216 is symmetrically provided with protrusions 217. The inner wall of the first constraint groove 218 is symmetrically provided with a second constraint groove 219. The bottom surface of the upper part 202 is fixedly connected with an apron edge 220, which is slidably connected to the lower part 203.

[0054] In this embodiment of the invention, during the process of inserting the upper part 202 into the lower part 203, the C-shaped block 216 is inserted into the first constraint groove 218. The protrusion 217 is squeezed by the inner wall of the first constraint groove 218, which forces the two protrusions of the C-shaped block 216 to deform in a direction that moves closer to each other until the protrusion 217 slides into the second constraint groove 219. The second constraint groove 219 is configured to extend along the axial direction of the first constraint groove 218, and the closer it is to the opening of the first constraint groove 218, the shallower the depth of the second constraint groove 219 along the radial direction of the first constraint groove 218. When the adjusting threaded pair 210 is in the initial position, the protrusion 217 is located in the second constraint groove 219 near the middle position.

[0055] When the adjusting threaded pair 210 moves downward, the distance between the upper surface of the lower engagement 203 and the bottom surface of the upper engagement 202 increases, and the protrusion 217 moves upward inside the second constraint groove 219, causing the two protrusions of the C-shaped block 216 to move towards each other, thereby increasing the friction between the protrusion 217 and the inner wall of the second constraint groove 219, so as to further enhance the stability of the relative position between the upper engagement 202 and the lower engagement 203.

[0056] When the adjusting threaded pair 210 moves upward, the distance between the upper surface of the lower engagement 203 and the bottom surface of the upper engagement 202 decreases, and the protrusion 217 moves downward inside the second constraint groove 219, causing the two protrusions of the C-block 216 to move away from each other, thereby increasing the gap between the two protrusions of the C-block 216, facilitating the passage of glue, and further enhancing the stability of the relative position between the upper engagement 202 and the lower engagement 203.

[0057] The apron edge 220 slides on the surface of the lower part 203 during the adjustment process to reduce glue overflow during the glue injection process.

[0058] The dispensing channel includes:

[0059] The first channel 301 is opened on the bottom surface of the upper part 202. The first channel 301 is connected to the interior of one of the first threaded tubes 207. It is used to inject glue into the corresponding first threaded tube 207 and enter the space between the upper part 202 and the lower part 203 through the first channel 301.

[0060] Several glue flow channels 214 are provided in a ring array on the surface of the adjusting threaded pair 210. Each glue flow channel 214 has a first through hole 215 inside, which is used to allow the glue flowing out from the first channel 301 to flow through the glue flow channel 214 and the first through hole 215 to the gap between the adjusting threaded pair 210 and the lower part 203.

[0061] The second channel 302 is opened inside the first constraint groove 218, and an arc groove 303 is opened on the inner wall surface of the lower part 203. The interior of the second channel 302 and the arc groove 303 are connected, so that the glue flowing out from the first channel 301 flows through the second channel 302 and the arc groove 303 to the interior of the lower part 203.

[0062] The third channel 304 is opened inside the second threaded groove 222. The diameter of the third channel 304 is smaller than the diameter of the second threaded groove 222. The third channel 304 is connected to the inside of the arc-shaped groove 303.

[0063] In this embodiment of the invention, before applying the adhesive, the first threaded tube 208 corresponding to the first threaded tube 207 communicating with the inside of the first channel 301 is taken out from the inside of the insertion sleeve 206, and the adhesive tube is placed into the first slot of the insertion sleeve 206. An elastic ring can be set at the outlet of the adhesive tube so that the part of the adhesive tube inserted into the first slot is relatively sealed to the outside. During the adhesive application process, the adhesive enters the inside of the first threaded tube 207 along the inner wall of the insertion sleeve 206 and enters the gap between the upper part 202 and the lower part 203 from the first channel 301.

[0064] A portion of the adhesive flowing out from the first channel 301 enters the area at the bottom of the adjusting thread pair 210 inside the lower part 203 through the adhesive flow groove 214 and the first through hole 215. It fills the internal threads on the inner wall of the lower part 203 inside the adhesive flow groove 214 and the gap between the lower part 203 and the adjusting thread pair 210, so that the bonding force between this portion of adhesive and the lower part 203 and the adjusting thread pair 210 is enhanced after solidification.

[0065] Part of the glue flowing out from the first channel 301 enters the first constraint groove 218 through the gap between the two protrusions of the C-shaped block 216, flows along the second channel 302 to the arc groove 303, and flows from the arc groove 303 to the interior of the lower joint 203 near the bottom of the adjusting thread pair 210, so that the bonding force between this part of the glue and the lower joint 203 is enhanced after solidification.

[0066] A portion of the adhesive flowing out from the first channel 301 enters the gap between the part of the upper part 202 located inside the adjusting threaded pair 210 and the adjusting threaded pair 210, so that the bonding force between this portion of adhesive and the upper part 202 and the adjusting threaded pair 210 is enhanced after the adhesive solidifies.

[0067] A portion of the glue entering the arc groove 303 flows through the third channel 304 into the second threaded groove 222, filling the gap between the threaded engagement of the second lead screw 209 and the second threaded groove 222, so that the second lead screw 209 is less likely to unravel inside the second threaded groove 222, and maintaining a stable connection between the foot 204 and the lower engagement part 203.

[0068] A support ring 305 is provided between the upper part 202 and the lower part 203. A C-shaped block 216 is inserted into a corresponding clearance hole on the surface of the support ring 305. The upper surface of the support ring 305 abuts against the bottom surface of the upper part 202, and the bottom surface of the support ring 305 abuts against the lower part 203.

[0069] The lower part 203 is equipped with an elastic ring plate 308. The upper surface of the foot 204, the bottom surface of the adjusting thread pair 210, and the inner wall surface of the lower part 203 all abut against the elastic ring plate 308. The elastic ring plate 308 is elastic. When the foot 204 is fixedly connected to the lower part 203 through the second screw 209, the elastic ring plate 308 undergoes elastic deformation.

[0070] Before the rod end body is adjusted for the first time, the elastic deformation of the elastic ring 308 makes it difficult for the adjusting thread pair 210 to rotate, and the setting of the support ring 305 keeps the upper part 202 and the lower part 203 of the engagement stable.

[0071] Before applying the adhesive, remove the support ring 305 and the elastic ring 308 from inside the rod end body.

[0072] In this embodiment of the invention, when the adjusting threaded pair 210 is in the initial position and no initial fine-tuning is performed, the gap between the upper surface of the upper part 202 and the bottom surface of the lower part 203 is eliminated by the support ring 305, thereby improving the overall strength between the upper part 202 and the lower part 203. During the process of fixing the foot 204 and the lower part 203 by the second lead screw 209, the deformation of the elastic ring 308 makes the adjusting threaded pair 210 and the elastic ring 308 have a large frictional force, further making the adjusting threaded pair 210 less prone to self-rotation, thereby improving the overall stability of the rod end body after fine-tuning.

[0073] Before applying the adhesive, remove the support ring 305 and the elastic ring 308 from inside the rod end body to allow more space for the adhesive.

[0074] The upper surface of the foot 204 is fixedly connected to a connecting claw 307, which is located inside the elastic ring 308.

[0075] In this embodiment of the invention, the engagement claw 307 is provided so that after the glue inside the lower engagement portion 203 located in the area below the adjusting thread pair 210 solidifies, the foot portion 204 is strengthened with the solidified glue through the engagement claw 307.

[0076] The number of the first threaded pipe 207, the insertion sleeve 206 and the first lead screw 208 is at least three sets, and at least two sets are symmetrical about the central axis of the lower part 203.

[0077] The number of second lead screws 209 is at least four, and at least two of the second lead screws 209 are symmetrical about the central axis of the lower coupling 203.

[0078] In this embodiment of the invention, before applying adhesive, one of the first lead screws 208 is removed. The interior of the first threaded tube 207 corresponding to this first lead screw 208 is connected to the interior of the first channel 301. The first lead screws 208 symmetrical about the central axis of the lower part 203 are retained so that the lower part 203 and the upper part 202 remain relatively stable during the adhesive application process through the connection between the first lead screw 208 and the corresponding first threaded tube 207. The symmetrical arrangement of the first lead screws 208 ensures that the lower part 203 and the foot 204 are subjected to relatively uniform force during the adhesive application process.

[0079] During the glue injection process, two of the second lead screws 209 are removed, while at least one pair of second lead screws 209 symmetrical about the central axis of the lower joint 203 are retained, so that the lower joint 203 and the foot 204 maintain a relatively uniform force during the glue injection process.

[0080] During glue injection, glue is continuously injected into the insertion sleeve 206 until glue overflows from the second threaded grooves 222 corresponding to the two removed second lead screws 209. During this process, the two second threaded grooves 222 play a role in balancing the air pressure inside the glue injection channel. In order to further reduce the cavity formed after the glue solidifies in the glue injection channel inside the rod end body, after the glue overflows from the second threaded groove 222, glue is continuously injected, and one of the second threaded grooves 222 is blocked intermittently to change the flow direction of the glue inside the glue injection channel, thereby reducing the area of ​​the glue injection channel that is not filled with glue, and thus enhancing the bonding strength between the glue in the glue injection channel and the rod end body after solidification. After the glue injection is completed, the first lead screw 208 is first installed into the insertion sleeve 206 and the first threaded tube 207 for glue injection, and some glue is squeezed out through the second threaded groove 222. Then, the second lead screws 209 are installed into the corresponding two second threaded grooves 222 respectively. After the glue solidifies, the joint bearing can be used.

[0081] It should be noted that the foot 204 can be configured as either an internal thread or an external thread, as shown in the attached figure in this embodiment. Figure 2 As shown, it is set with an internal thread to facilitate the user to assemble the corresponding foot 204 as needed.

[0082] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high-load injection-molded rod end spherical bearing, comprising a bearing body (101), characterized in that, include: Injection-molded rod end body; The rod end body includes: a bearing seat (201), an upper connecting part (202), a lower connecting part (203), and a foot (204). The bearing seat (201) is used for mounting the bearing body (101). The upper connecting part (202) is integrally formed with the bearing seat (201). The upper connecting part (202) is inserted into the lower connecting part (203). The bottom of the lower connecting part (203) is provided with a foot (204). The surface of the lower connecting part (203) is provided with an adjustment part (205). The internal screw of the lower connecting part (203) is... The rod end is connected to an adjusting threaded pair (210). The upper part (202) is inserted inside the adjusting threaded pair (210), and the bottom surface of the adjusting threaded pair (210) abuts against the inner bottom surface of the adjusting threaded pair (210). The lower part (203) and the adjusting part (205) are integrally formed. The lower part (203) and the adjusting part (205) are provided with adjusting members inside. The distance between the upper part (202) and the lower part (203) is adjusted by adjusting the adjusting members to adjust the overall length of the rod end body. The rod end body is provided with an injection channel between the foot (204) and the upper joint (202). After the length of the rod end body is adjusted, the rod end body is tightened again by injecting glue into the injection channel to improve the load strength of the rod end body. The bottom surface of the upper part (202) is integrally formed with a plurality of first threaded tubes (207), and the surface of the lower part (203) is integrally formed with an insertion sleeve (206) corresponding to the number of the first threaded tubes (207). The first threaded tubes (207) are slidably connected in the corresponding insertion sleeves (206). A first screw (208) is inserted into a first slot on the surface of the insertion sleeve (206). The first screw (208) is threadedly connected to the corresponding first threaded tube (207). The surface of the foot (204) is arranged in a ring array with a plurality of second screws (209). The second screws (209) are inserted into the corresponding second slots on the surface of the foot (204). The bottom surface of the lower part (203) is provided with a second threaded groove (222) corresponding to the second screw (209). The second screw (209) is threadedly connected to the lower part (203) through the corresponding second threaded groove (222). The bottom surface of the upper part (202) is fixedly connected with a number of C-shaped blocks (216) in a ring array, and the upper surface of the lower part (203) is provided with a first constraint groove (218) corresponding to the C-shaped blocks (216). The dispensing channel includes: A first channel (301) is formed on the bottom surface of the upper part (202) of the joint. The first channel (301) is connected to the interior of one of the first threaded tubes (207) for injecting glue into the interior of the corresponding first threaded tube (207) and entering between the upper part (202) of the joint and the lower part (203) of the joint through the first channel (301). A plurality of glue-flowing grooves (214) are provided in a ring array on the surface of the adjusting threaded pair (210). Each glue-flowing groove (214) has a first through hole (215) inside, which is used to allow the glue flowing out from the first channel (301) to flow through the glue-flowing groove (214) and the first through hole (215) to the gap between the adjusting threaded pair (210) and the lower part of the joint (203); The second channel (302) is opened inside the first constraint groove (218), and the inner wall surface of the lower joint (203) is provided with an arc-shaped groove (303). The interior of the second channel (302) and the arc-shaped groove (303) are connected to each other, so that the glue flowing out from the first channel (301) can flow through the second channel (302) and the arc-shaped groove (303) to the interior of the lower joint (203). The third channel (304) is opened inside the second threaded groove (222). The diameter of the third channel (304) is smaller than the diameter of the second threaded groove (222). The third channel (304) is connected to the inside of the arc groove (303).

2. The high-load injection-molded rod end spherical bearing according to claim 1, characterized in that, The adjusting component includes: a first rectangular groove that communicates with the interior of the lower connecting part (203) is provided inside the adjusting part (205); a rack (212) is slidably connected in the first rectangular groove starting inside the adjusting part (205); an adjusting screw (213) is rotatably connected in the first circular hole opened on the surface of the adjusting part (205) through a first bearing; the adjusting screw (213) is threadedly connected in the first threaded groove starting inside the rack (212); teeth (211) are arranged in a ring array near the bottom position on the surface of the adjusting threaded pair (210); the teeth (211) are integrally formed with the adjusting threaded pair (210); the rack (212) is meshed with the teeth (211); and the teeth (211) are slidably connected with the rack (212) along the axial direction of the adjusting threaded pair (210).

3. The high-load injection-molded rod end spherical bearing according to claim 2, characterized in that, The surface of the C-shaped block (216) is symmetrically provided with protruding pimples (217), the inner wall of the first constraint groove (218) is symmetrically provided with a second constraint groove (219), the bottom surface of the upper part (202) is fixedly connected with an apron edge (220), and the apron edge (220) is slidably connected to the lower part (203).

4. The high-load injection-molded rod end spherical bearing according to claim 3, characterized in that, A support ring (305) is provided between the upper part (202) and the lower part (203). The C-shaped block (216) is inserted into the corresponding clearance hole opened on the surface of the support ring (305). The upper surface of the support ring (305) abuts against the bottom surface of the upper part (202), and the bottom surface of the support ring (305) abuts against the lower part (203). The lower connecting part (203) is provided with an elastic ring plate (308). The upper surface of the foot (204), the bottom surface of the adjusting thread pair (210) and the inner wall surface of the lower connecting part (203) all abut against the elastic ring plate (308). The elastic ring plate (308) is elastic. When the foot (204) is fixedly connected to the lower connecting part (203) through the second screw (209), the elastic ring plate (308) undergoes elastic deformation. When the rod end body is not adjusted for the first time, the elastic deformation of the elastic ring (308) makes it difficult for the adjusting thread pair (210) to rotate. The setting of the support ring (305) keeps the upper part (202) and the lower part (203) of the connection stable. Before applying the adhesive, the support ring (305) and the elastic ring (308) are removed from the inside of the rod end body.

5. The high-load injection-molded rod end spherical bearing according to claim 4, characterized in that, The upper surface of the foot (204) is fixedly connected to a connecting claw (307), which is located inside the elastic ring (308).

6. The high-load injection-molded rod end spherical bearing according to claim 5, characterized in that, The number of the first threaded tube (207), the insertion sleeve (206) and the first lead screw (208) is at least three sets, and at least two sets are symmetrical about the central axis of the lower part of the connection (203); The number of the second lead screw (209) is at least four, and at least two of the second lead screws (209) are symmetrical about the central axis of the lower part of the joint (203).

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