Durable joint assembly and reaction rod assembly

Abstract

According to the durable connector assembly and the reaction rod assembly, a pin roller installation space is reserved between a ball bowl and a supporting pin of the connector assembly, a plurality of pin rollers are movably assembled in the pin roller installation space, and the pin rollers are limited in the pin roller installation space through a limiting mechanism. The contact between the supporting pin and the elastic body is isolated through the matching of the pin roller and the ball bowl, so that the effect of protecting the elastic body is achieved. Compared with the prior art, the roller and the ball bowl are in spherical surface fit, the friction force between the roller and the ball bowl is very small, the roller can instantly roll or swing or slide under the action of external force, and the service life of the reaction rod assembly and the service life of the joint assembly of the reaction rod assembly can be effectively prolonged.

Description

Technical Field

[0001] The invention relates to a reaction rod assembly and a joint assembly of a vehicle chassis rear suspension balancing device. Background Art

[0002] The structure of the reaction rod assembly generally includes a rod body, a rod head fixedly connected to both ends of the rod body, and a joint assembly installed on the rod head.

[0003] The basic structure of the traditional joint assembly includes a support pin, an inner shell, an elastomer and an outer shell. The inner wall of the inner shell is a cylindrical hole that matches the support pin. The support pin is tightly fitted in the inner shell. Natural rubber and chemical raw materials are injected between the outer shell and the inner shell, and then heated and vulcanized to form an elastomer. The elastomer is solidified between the outer shell and the inner shell, and the elastic properties of the rubber are used to complete the shock absorption and balancing of the torsion joint and the support pin assembly. When in use, the outer shell is pressed into the mounting hole of the rod head of the reaction rod along the axial direction of the support pin, so that the outer shell is tightly fitted and embedded in the mounting hole of the rod head of the reaction rod.

[0004] When in use, the reaction rod assembly is connected to the vehicle frame and the vehicle axle respectively through the support pins of the joint assembly at its end, so that the frame and the axle are connected to form a relatively stable whole, ensuring that the vehicle chassis suspension can be stable and not shake when the vehicle is driving on uneven roads. When the vehicle is driving on uneven roads, the reaction rod assembly is always on different horizontal lines. Since the reaction rod assembly is in a triangular structure in the vehicle chassis suspension, the length of the reaction rod assembly will change when in use, so the joint assembly of the reaction rod assembly must meet the required use function, generally by designing an elastic body in the joint assembly. When the reaction rod assembly is subjected to external force, the support pin will drive the compressed elastic body to produce displacement, thereby achieving the requirement of telescopic change of the rod length in the reaction rod assembly.

[0005] The elasticity of this traditional joint assembly is achieved by using natural rubber that is heated and vulcanized to bond with the outer shell and the inner shell to form a relatively integrated whole. When the vehicle is traveling on an uneven road, the vehicle chassis suspension device is subjected to the uneven external force, and the support pin will move, rotate or / and swing accordingly, causing the rod body of the reaction rod assembly to have a tendency to expand and contract in length. At this time, the elastic deformation of the elastic body is used to offset this tendency of expansion and contraction in length, thereby protecting the rod body. However, the elastic body itself will be extremely stretched and squeezed, and the elastic body is easily fatigued and damaged, and has a very short service life.

[0006] In order to solve the problem that the elastic body is easy to fatigue and damage and has a short service life, the Chinese utility model patent CN201189811Y discloses an automobile reaction rod joint assembly, which has a cylindrical pin shaft, and its special feature is that it has a non-metallic spherical body that slides with the pin shaft, a spherical washer and a spherical spring retainer at the end of the spherical body, a ball bowl outside the spherical body, an elastic support body outside the ball bowl, and a spring retainer, a dust cover and a washer at the ends of the ball bowl and the elastic support body. The patent announcement claims that this automobile reaction rod joint assembly has a simple manufacturing process, low manufacturing cost, and parts that are not easily deformed and damaged, and a long service life. In fact, due to the large contact area between the non-metallic spherical body and the ball bowl, when a heavy vehicle is loaded, there is very large friction resistance and heavy pressure between the non-metallic spherical body and the ball bowl. When the loaded vehicle is traveling on an uneven road, the reaction rod joint assembly will be subjected to great impact force and directional twisting force when the vehicle turns. The friction between the non-metallic spherical body and the ball bowl is further aggravated, and the non-metallic spherical body and the ball bowl are very easy to wear, resulting in a very short service life of the reaction rod joint assembly. Summary of the invention

[0007] The object of the present invention is to provide a durable joint assembly and a reaction rod assembly, which can effectively increase the service life of the reaction rod assembly.

[0008] In order to achieve the above object, the present invention adopts the following technical solution: A durable joint assembly comprises a supporting pin, a roller, a ball bowl, and an elastomer; the supporting pin comprises a pin shaft body, which divides the cylindrical surface of the roller into an inner cylindrical surface and an outer cylindrical surface, and the outer cylindrical surface of the roller has an arc-shaped spherical surface area; the ball bowl is movably sleeved on the supporting pin, and the inner side surface of the ball bowl has an arc-shaped spherical surface area corresponding to the arc-shaped spherical surface area of ​​the outer cylindrical surface of each roller, and at least one circle of roller installation space surrounding the supporting pin is formed between the supporting pin and the arc-shaped spherical surface area of ​​the ball bowl; a plurality of rollers are movably assembled in each of the roller installation spaces, and the axial ends of each of the rollers completely fall into the roller installation space or extend out of the roller installation space, and after each of the rollers is assembled, the supporting pin can freely rotate and / or swing relative to the ball bowl, and a limiting mechanism for limiting the position of each of the rollers is provided on the supporting pin; the elastomer is surrounded and arranged on the outer side surface of the ball bowl.

[0009] Each of the rollers is distributed around the supporting pin in a circle, and a limit baffle is provided on the pin shaft body of the supporting pin to limit the two ends of each of the rollers respectively. There is a gap or a movable abutment between each of the limit baffles and the corresponding end of each of the rollers, and a gap is left between the limit baffle and the ball bowl in the radial direction and / or axial direction.

[0010] An annular boss is provided in the middle section of the pin shaft body of the supporting pin, and a first annular limit blind groove is provided on the surface of the annular boss, which surrounds the pin shaft body of the supporting pin and has a groove width less than or equal to or greater than the length of the roller. Part or all of the length direction of each roller is installed in the first annular limit blind groove, and the radial direction of each roller protrudes out of the first annular limit blind groove; a limit baffle is provided on the pin shaft body of the supporting pin for limiting the two ends of the roller respectively, and each limit baffle has a gap or moves against the corresponding end of each roller, and a gap is left between the limit baffle and the ball bowl in the radial direction or / and axial direction.

[0011] An annular protrusion is provided in the middle section of the pin shaft body of the supporting pin, and slopes extending toward the pin shaft body of the supporting pin are respectively provided at the axial ends of the annular protrusion, and each of the slopes is respectively provided with a second annular limiting blind groove which surrounds the pin shaft body of the supporting pin and has a groove width less than or equal to or greater than the length of the roller, and all or part of the length direction of each roller is installed in the second annular limiting blind groove and protrudes out of the second annular limiting blind groove in the radial direction; limiting baffles are provided on the pin shaft body of the supporting pin for limiting the outer ends of the rollers respectively, and there is a gap or movably abutting against each other between each of the limiting baffles and the corresponding ends of each of the rollers, and a gap is left between the limiting baffle and the ball bowl in the radial direction or / and the axial direction.

[0012] An annular protrusion is provided in the middle section of the pin shaft body of the supporting pin, and slopes extending toward the pin shaft body of the supporting pin are respectively provided at the axial ends of the annular protrusion, and each of the slopes is respectively spaced apart and provided with a second limiting blind groove surrounding the pin shaft body of the supporting pin, and the length of each of the second limiting blind grooves is less than or equal to or greater than the length of the roller, and part or all of each of the rollers is respectively correspondingly installed in the second limiting blind groove and protrudes out of the second limiting blind groove in the radial direction; limiting baffles are respectively provided on the pin shaft body of the supporting pin for limiting the outer ends of the rollers, and each of the limiting baffles has a gap or movably abuts against the corresponding ends of each of the rollers, and a gap is left between the limiting baffle and the ball bowl in the radial direction or / and the axial direction.

[0013] The limiting baffle has a blocking portion for blocking the corresponding ends of each of the rollers; the blocking portion is a flat plate structure, or a limiting hole is opened on the blocking portion corresponding to the corresponding ends of each of the rollers, or an annular limiting groove is opened on the blocking portion corresponding to the corresponding ends of each of the rollers.

[0014] The inner cylindrical surface of the roller has an arc-shaped spherical surface area; or, the inner cylindrical surface of the roller is a plane; or, the inner cylindrical surface of the roller is a concave semi-cylindrical surface.

[0015] The inner cylindrical surface of each roller has a concave arc-shaped spherical area, and the pin shaft body is provided with a protruding arc-shaped spherical area for matching with the inner cylindrical surface of each roller; each roller is distributed around the supporting pin in one or two circles.

[0016] The protruding arc-shaped spherical surface area is integrally formed on the supporting pin body; or, a shaft sleeve is sleeved on the pin shaft body, and the protruding arc-shaped spherical surface area is formed on the shaft sleeve.

[0017] The ball bowl is a split structure formed by splicing two or more ball bowls separately.

[0018] The ball bowl is obtained by circumferentially splicing the ball bowl parts, or axially splicing the ball bowl parts.

[0019] A ball bowl baffle is arranged along the outer side end of the ball bowl, and the outer side of the ball bowl and the ball bowl baffle enclose a receiving space. The elastomer is filled in the receiving space and protrudes out of the ball bowl baffle in the radial direction.

[0020] It also includes a roller mounting frame arranged in the installation space, and each of the rollers is movably mounted on the roller mounting frame. The outer cylindrical surface of each roller is exposed from the outer side surface of the roller mounting frame to correspond to the ball bowl, and the inner cylindrical surface of each roller is exposed from the inner side surface of the roller mounting frame to correspond to the support pin.

[0021] The support pin is sleeved with an isolation sleeve, and each roller is movably assembled between the isolation sleeve and the arc spherical surface area of ​​the ball bowl.

[0022] The outer movable sleeve of the ball bowl is provided with a sleeve for encircling each of the ball bowl parts; or, each of the ball bowl parts is connected together by a connecting mechanism.

[0023] A durable reaction rod assembly comprises a rod body, a rod head fixedly connected to the end of the rod body, and joint assemblies respectively installed in the rod heads. The joint assembly adopts the durable joint assembly as described above.

[0024] After adopting the above scheme, a durable joint assembly and reaction rod assembly of the present invention are provided, wherein the joint assembly has a roller installation space between the ball bowl and the support pin, and a plurality of rollers are movably mounted in the roller installation space, and the rollers are limited in the roller installation space by a limiting mechanism, and the support pin and the elastic body are separated by the cooperation of the rollers and the ball bowl, thereby achieving the function of protecting the elastic body. Compared with the prior art, in the present invention, the rollers and the ball bowl are spherically matched, and the contact area between them is small, and the friction force is very small. When an external force acts, the rollers can roll, swing or slide instantly, which can effectively improve the service life of the reaction rod assembly and its joint assembly.

[0025] Furthermore, the ball bowl adopts a split structure formed by splitting two or more ball bowls. The ball bowl splits can be spliced ​​circumferentially or axially. The ball bowl adopts a split structure, which allows the roller to be easily installed in the roller installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the first structure of the support pin in the present invention; Figure 2 It is a schematic diagram of the second structure of the support pin in the present invention; Figure 3 It is a schematic diagram of the third structure of the support pin in the present invention; Figure 4 It is a schematic diagram of the fourth structure of the support pin in the present invention; Figure 5 It is a fifth structural schematic diagram of the support pin in the present invention; Figure 6 is a sixth structural schematic diagram of the support pin in the present invention; Figure 7 is a seventh structural schematic diagram of the support pin in the present invention; Figure 8 is a schematic diagram of an eighth structure of the support pin in the present invention; Fig. 9 It is a schematic diagram of the first structure of the roller in the present invention; Fig.10 It is a schematic diagram of the second structure of the roller in the present invention; Fig.11 It is a schematic diagram of the third structure of the roller in the present invention; Fig.12 This is a schematic diagram of the first structure of the axial inner end surface of the blocking portion of the limit baffle in the present invention; Fig.13 A schematic diagram of a second structure of the axial inner end surface of the blocking portion of the position limiting baffle in the present invention; Fig.14 It is a third structural schematic diagram of the axial inner end surface of the blocking portion of the limit baffle in the present invention; Fig.15 This is a schematic diagram of the first structure of the ball bowl of the present invention; Fig.16 This is a schematic diagram of the second structure of the ball bowl of the present invention; Fig.17 It is a structural schematic diagram of the first embodiment of the joint assembly in the present invention; Fig.18 This is a structural schematic diagram of a second embodiment of a joint assembly in the present invention; Fig.19 This is a schematic structural diagram of a third embodiment of a joint assembly in the present invention; Fig. 20 It is a schematic diagram of the structure of the fourth and fifth embodiments of the joint assembly of the present invention; Fig.21 It is a schematic diagram of the structure of the sixth and seventh embodiments of the joint assembly of the present invention; Fig. 22 It is a structural schematic diagram of an eighth embodiment of a joint assembly in the present invention; Fig.23 It is a structural schematic diagram of a ninth embodiment of a joint assembly in the present invention; Fig.24 It is a schematic diagram of the structure of the joint assembly embodiment 10 and embodiment 11 of the present invention; Fig.25 It is a structural schematic diagram of a twelfth embodiment of a joint assembly in the present invention; Fig.26 It is a structural schematic diagram of a thirteenth embodiment of a joint assembly in the present invention; Fig. 27 It is a structural schematic diagram of a fourteenth embodiment of a joint assembly in the present invention; Fig.28 It is a structural schematic diagram of the fifteenth embodiment of the joint assembly in the present invention; Fig.29 It is a structural schematic diagram of a sixteenth embodiment of a joint assembly in the present invention; Fig.30 It is a structural schematic diagram of a seventeenth embodiment of a joint assembly in the present invention; Fig.31 It is a structural schematic diagram of Embodiment 18 of the joint assembly of the present invention; Fig.32 It is a structural schematic diagram of the reaction rod assembly in the present invention; Fig.33 is another structural schematic diagram of the reaction rod assembly in the present invention; Fig.34 for Fig.32 and Fig.33 Axial cross-section of the middle club head; Fig.35 for Fig.32 and Fig.33 The second axial cross-section of the middle club head; Fig.36 for Fig.32 and Fig.33 The third axial cross-section of the middle club head; Fig.37 for Fig.32 and Fig.33 The fourth axial cross-section of the middle club head; Fig.38 for Fig.32 and Fig.33 Fifth axial cross-section of the mid-club head. DETAILED DESCRIPTION

[0027] The invention discloses a durable joint assembly and a reaction rod assembly. The joint assembly is applied to the reaction rod assembly and is assembled on the rod head of the reaction rod assembly when in use.

[0028] In the present invention, both ends in the axial direction are referred to as "ends", and both ends in the radial direction are referred to as "sides".

[0029] In the present invention, in the axial direction, the direction toward the axial midpoint of the support shaft is considered as the inner side, and the direction away from the axial midpoint of the support shaft is considered as the outer side. In the radial direction, the direction toward the pin body of the support pin is considered as the inner side, and the direction away from the pin body of the support pin is considered as the outer side.

[0030] In the present invention, the "rotation" mentioned refers to rotational motion around the axial direction; the "swing" mentioned refers to one end of the axial direction moving along one radial side, while the other end of the axial direction moves toward the opposite radial side.

[0031] The present invention provides a durable joint assembly, comprising a supporting pin, a roller, a ball bowl, and an elastomer; the supporting pin has a pin shaft body, which divides the cylindrical surface of the roller into an inner cylindrical surface and an outer cylindrical surface, and the outer cylindrical surface of the roller has an arc-shaped spherical surface area; the ball bowl is movably sleeved on the supporting pin, and the inner side surface of the ball bowl has an arc-shaped spherical surface area corresponding to the arc-shaped spherical surface area of ​​the outer cylindrical surface of each roller, and at least one circle of roller installation space surrounding the supporting pin is formed between the supporting pin and the arc-shaped spherical surface area of ​​the ball bowl; a plurality of rollers are movably installed in each of the roller installation spaces, and the axial ends of each of the rollers completely fall into the roller installation space or extend out of the roller installation space, and after each of the rollers is installed, the supporting pin can freely rotate or / and swing relative to the ball bowl, and a limiting mechanism for limiting the position of each of the rollers is provided on the supporting pin; the elastomer is surrounded and arranged on the outer side surface of the ball bowl.

[0032] In a specific embodiment of the present invention, the support pin includes not only its pin body, but also includes an annular boss, annular convex edge or annular convex block when the pin body is provided with the annular boss, annular convex edge or annular convex block. Specifically, the support pin preferably has eight structural forms: The first structural form of the support pin 100 is as follows Figure 1 As shown, the support pin 100 has a pin shaft body 11 .

[0033] The second structural form of the support pin 100 is as follows Figure 2 As shown, the support pin 100 has a pin shaft body 11, and a ring-shaped boss 12 is provided in the middle section of the pin shaft body 11, and the surface of the ring-shaped boss 12 is a cylindrical surface.

[0034] The third structural form of the support pin 100 is as follows Figure 3 As shown, the supporting pin 100 has a pin shaft body 11, a ring boss 12 is provided in the middle section of the pin shaft body 11, a first ring-shaped limiting blind groove 121 surrounding the pin shaft body 11 is provided on the surface of the ring boss 12, and the first ring-shaped limiting blind groove 121 is perpendicular to the axial direction of the pin shaft body 11.

[0035] The fourth structural form of the support pin 100 is as follows Figure 4 As shown, the support pin 100 has a pin body 11, and a ring boss 12 is provided in the middle section of the pin body 11, and the table surface of the ring boss 12 is a cylindrical surface. The table surface of the ring boss 12 is provided with first position-limiting blind grooves 122 that surround the pin body 11 at intervals, and the extension direction of each first position-limiting blind groove 122 is parallel to the axial direction of the pin body 11.

[0036] The fifth structural form of the support pin 100 is as follows Figure 5 As shown, the support pin 100 has a pin body 11, a ring convex edge 13 is provided in the middle section of the pin body 11, and mounting grooves 131 are spaced apart at the outer diameter of the ring convex edge 13, which surround the pin body 11 and penetrate the axial direction of the ring convex edge 13.

[0037] The sixth structural form of the support pin 100 is as follows Figure 6 As shown, the support pin 100 has a pin body 11, a ring convex block 14 is provided in the middle section of the pin body 11, and ramps 141 extending toward the pin body 11 are respectively provided at both axial ends of the ring convex block 14, and the ramps 141 extend from both axial ends of the ring convex block 14 to connect with the pin body 11. The ramp 141 can be a conical ramp or a concave arc ramp.

[0038] The seventh structural form of the support pin 100 is as follows Figure 7As shown, the support pin 100 has a pin body 11, a ring convex block 14 is provided in the middle section of the pin body 11, and ramps 141 extending toward the pin body 11 are respectively provided at both axial ends of the ring convex block 14, and the ramps 141 extend from both axial ends of the ring convex block 14 to connect with the pin body 11. The ramp 141 can be a conical ramp or an inwardly concave arc ramp. A second annular position-limiting blind groove 1411 is respectively provided on each ramp 141 and surrounds the pin body 11.

[0039] The eighth structural form of the support pin 100 is as follows Figure 8 As shown, the support pin 100 has a pin body 11, and an annular protrusion 14 is provided in the middle section of the pin body 11. The axial ends of the annular protrusion 14 are respectively provided with slopes 141 extending toward the pin body 11, and the slopes 141 extend from the axial ends of the annular protrusion 14 to connect with the pin body 11. The slope 141 can be a conical slope or an inward concave arc slope. Second limiting blind grooves 1412 are spaced apart on each slope 141 and surround the pin body 11. The extension direction of each second limiting blind groove 1412 is parallel to the axial direction of the pin body 11 in the projection on the axial section of the pin body 11.

[0040] In the present invention, the outer cylindrical surface of the roller refers to the side cylindrical surface facing the ball bowl, and the inner cylindrical surface of the roller refers to the side cylindrical surface facing away from the ball bowl. The inner cylindrical surface and the outer cylindrical surface of the roller are for the static state. During operation, when the roller rolls, the relative position relationship between the inner cylindrical surface and the outer cylindrical surface will change.

[0041] In the present invention, the roller can meet the use requirements as long as its outer cylindrical surface has an arc-shaped spherical surface area. The following three structural forms are preferred: The first structural form of the roller 200 is as follows Fig. 9 As shown, the roller 200 is an arcuate spherical roller, that is, the entire cylindrical surface of the roller 200 is an arcuate spherical surface.

[0042] The second structural form of roller 200 is as follows Fig.10 As shown, the roller 200 is a half arc-shaped spherical roller, that is, the outer cylindrical surface 21 of the roller 200 is an arc-shaped spherical surface, and the inner cylindrical surface 22 of the roller is a plane.

[0043] The third structural form of roller 200 is as follows Fig.11 As shown, the outer cylindrical surface 21 of the roller 200 is an arcuate spherical surface, and the inner cylindrical surface 23 of the roller is a concave semi-cylindrical surface.

[0044] In the present invention, both axial ends of the roller 200 may be arc-shaped surfaces or flat surfaces.

[0045] In the present invention, the bowl preferably has three structural forms: The first structure of the bowl 300 is as follows Fig.15 As shown, the ball bowl 300 is a split structure formed by assembling two or more ball bowl segments 31; the ball bowl 300 is obtained by axially assembling the ball bowl segments 31.

[0046] The second structure of the bowl 300 is as follows Fig.16 As shown, the ball bowl 300 is a split structure formed by assembling two or more ball bowl segments 32; the ball bowl segments 32 are circumferentially assembled to obtain the ball bowl 300.

[0047] The third structure of the ball bowl 300 is an integral ball bowl.

[0048] In the present invention, the outer side of the ball bowl 300 can be a conventional cylindrical surface, and the elastic body 400 is directly coated on the outer side of the ball bowl 300. A ball bowl baffle 34 can also be set at the end of the outer side of the ball bowl 300. The elastic body 400 fills the space enclosed by the outer side of the ball bowl 300 and the ball bowl baffle 34 and protrudes out of the ball bowl baffle 34 in the radial direction. The ball bowl baffle 34 can be a flat plate structure or other structures.

[0049] Embodiment 1: The present invention provides a durable joint assembly, the embodiment of which is as follows Fig.17 As shown, it includes a supporting pin 100 , a roller 200 , a ball cup 300 , and an elastic body 400 .

[0050] The support pin 100 is made of Figure 1 In the first structure shown, the support pin 100 has a pin shaft body 11 .

[0051] The cylindrical surface of the roller 200 is divided into an inner cylindrical surface facing away from the ball bowl 300 and an outer cylindrical surface facing the ball bowl 300. The outer cylindrical surface of the roller 200 has an arc-shaped spherical surface area. Fig. 9 In the structure shown, the roller 200 is an arcuate spherical roller, that is, the entire cylindrical surface of the roller 200 is an arcuate spherical surface.

[0052] The ball bowl 300 is movably mounted on the pin body 11, and the inner side surface 33 of the ball bowl 300 has an arcuate spherical area corresponding to the arcuate spherical cylindrical surface of each roller 200. A roller installation space surrounding the pin body 11 is formed between the pin body 11 and the arcuate spherical area of ​​the ball bowl 300.

[0053] A plurality of rollers 200 are movably mounted in the roller installation space. The axial direction of each roller 200 is parallel to the axial direction of the pin body 11. The inner cylindrical surface of each roller 200 movably abuts against the pin body 11 and is distributed around the pin body 11. The outer cylindrical surface of each roller 200 movably abuts against the arc spherical surface area of ​​the inner side surface 33 of the ball bowl 300. Each roller 200 can be distributed closely or at intervals in the circumferential direction of the pin body 11. The axial ends of each roller 200 extend out of the coverage range of the ball bowl 300, and the axial ends of each roller 200 extend out of the roller installation space, and the roller installation space has a margin, so that after each roller 200 is assembled, the support pin 100 can freely rotate or / and swing relative to the ball bowl 300.

[0054] The pin body 11 is fixedly provided with stopper plates 500 at the axial ends of the rollers 200 for limiting the corresponding ends of the rollers 200. In this embodiment, the stopper plates 500 are designed as a flat plate structure. The axial inner end surface of the stopper portion of the stopper plates 500 is as follows: Fig.12 In the planar structure shown in FIG. 1 , the blocking portion of the limit baffle 500 is the portion of the limit baffle 500 corresponding to the corresponding end of each roller 200. There is a gap or active contact between the blocking portion of the limit baffle 500 and the corresponding end of each roller 200 in the axial direction, and the corresponding end of each roller 200 is limited by the axial inner end surface of the blocking portion. Of course, the axial inner end surface of the blocking portion of the limit baffle 500 can also be adopted as Fig.14 In the structure shown in the figure, an annular limiting groove 53 is provided on the axial inner end surface of the blocking portion of the limiting baffle 500 corresponding to the corresponding end of each roller 200, and there is a gap or a movable contact between the groove bottom of the annular limiting groove 53 and the corresponding end of each roller 200 in the axial direction, and the corresponding end of each roller 200 is limited by the annular limiting groove 53. When the rollers 200 are spaced apart, the axial inner end surface of the blocking portion of the limiting baffle 500 can be adopted as follows Fig.13In the structure shown, the corresponding ends of each roller 200 are arranged one by one with the limiting holes 52 on the axial inner end surface of the blocking portion of the limiting baffle 500. Each limiting hole 52 can be a blind hole or a through hole. When the limiting hole 52 is a blind hole, there is a gap or a movable abutment between the bottom of each limiting hole 52 and the corresponding end of each roller 200 in the axial direction. When the limiting hole 52 is a through hole, since the roller 200 is an arc spherical roller, its two ends in the axial direction are thinner and the middle section is thicker. The limiting hole 52 is set with a suitable caliber, so that the two ends of the roller 200 can be movably inserted into the through hole and the roller 200 will not escape completely, so that the corresponding ends of each roller 200 are limited by each limiting hole 52. For example, the diameter of the limiting hole 52 may be larger than the diameter of the corresponding end of the roller 200 (but smaller than the maximum diameter of each roller 200), so that space for the corresponding end of each roller 200 to move and swing can be reserved.

[0055] There is a gap 35 between the two axial end surfaces of the ball bowl 300 and the limit baffle 500 in the axial direction. There is a gap or a movable abutment between each limit baffle 500 and the corresponding end of each roller 200 in the axial direction, thereby leaving space for the roller 200 to move.

[0056] The elastic body 400 is disposed around the outer side of the bowl 300 .

[0057] In order to make the structure of the joint assembly more stable, a ball bowl baffle 34 can be set at the end of the outer side of the ball bowl 300, and the elastic body 400 is filled in the space enclosed by the outer side of the ball bowl 300 and the ball bowl baffle 34 and protrudes out of the ball bowl baffle 34 in the radial direction. The ball bowl baffle 34 can adopt an upright flat plate structure or other structures. In this embodiment, the outer side of the ball bowl 300 has a sloped ball bowl baffle 34 at the end. From the radial direction, the outer side of the ball bowl 300 and the ball bowl baffle 34 enclose a accommodating space with a diameter that decreases from large to small from the outside to the inside. The elastic body 400 is filled in the accommodating space and protrudes out of the ball bowl baffle 34 in the radial direction. When the support pin 100 is driven by an external force to move or swing the ball bowl 300, the sloped ball bowl baffle 34 can quickly reduce the volume of the accommodating space, increase the pressure, and prompt the elastic body 400 to quickly produce elastic deformation, so that the middle and rear axles of the vehicle can obtain stable buffering.

[0058] In this embodiment, the elastic body 400 is made of a harder elastic body (such as nylon), and accordingly, the bottom of the elastic body 400 has a recess 41 to leave space for elastic deformation of the elastic body 400. When the elastic body 400 is made of a softer elastic body (such as rubber, polyurethane), the bottom of the elastic body 400 may not be provided with a recess.

[0059] Embodiment 2: A durable joint assembly of the present invention, embodiment 2 is as follows Fig.18 As shown, the difference between this embodiment and the first embodiment is that each roller 200 is relatively short, each roller 200 completely falls within the coverage range of the ball bowl 300, and both axial ends of each roller 200 completely fall within the roller installation space. The limit baffle 500 adopts an L-shaped plate, and one arm of the L-shaped plate serves as a blocking portion 51 of the limit baffle 500. From the axial direction, the axial inner end of the blocking portion 51 extends into the axial end surface of the ball bowl 300 and is aligned with the corresponding end of each roller 200. There is a gap or they are movably abutted against each other, and there is a gap 37 in the radial direction between the minimum diameter of the ball bowl 300 and the blocking portion 51, and the other arm of the limit baffle 500 (L-shaped plate) is located outside the axial end surface of the ball bowl 300, that is, there is a gap 36 in the axial direction between the other arm of the limit baffle 500 (L-shaped plate) and the axial end surface of the ball bowl 300. When working, the other arm of the limit baffle 500 (L-shaped plate) can be used to limit the swing angle of the ball bowl 300.

[0060] Embodiment three: The present invention provides a durable joint assembly, the third embodiment of which is as follows Fig.19 As shown, the difference between this embodiment and the first embodiment is that the support pin 100 is as follows Figure 2 In the second structure shown, the middle section of the pin body 11 is provided with an annular boss 12, the table surface of the annular boss 12 is a cylindrical surface, the axial length of the table surface of the annular boss 12 is less than the length of the roller 200, and the axial ends of the table surface of the annular boss 12 are connected to the pin body 11 through an arc slope. A roller installation space surrounding the pin body 11 is formed between the annular boss 12 and the arc spherical surface area of ​​the bowl 300, and a plurality of rollers 200 are movably assembled in the roller installation space, the axial direction of each roller 200 is parallel to the axial direction of the pin body 11, each roller 200 is distributed around the table surface of the annular boss 12 in a circle, and the two ends extend out of the axial ends of the table surface of the annular boss 12 (and extend out of the axial ends of the bowl 300), and the arc slope of the annular boss 12 can provide swing space for the two ends of each roller 200. Each roller 200 can be distributed closely or at intervals.

[0061] Embodiment 4: The present invention provides a durable joint assembly, the fourth embodiment of which is as follows Fig. 20 As shown, the difference between this embodiment and the third embodiment is that the support pin 100 is as follows: Figure 3In the third structure shown, a first annular limiting blind groove 121 is provided on the surface of the annular boss 12, which surrounds the pin shaft body 11. The groove width of the first annular limiting blind groove 121 is less than or equal to or slightly larger than the length of the roller 200. Part or all of the length direction of each roller 200 is installed in the first annular limiting blind groove 121. The axial direction of each roller 200 is parallel to the axial direction of the pin shaft body 11 and protrudes out of the first annular limiting blind groove 121 in the radial direction.

[0062] In this embodiment, the groove bottom of the first annular limiting blind groove 121 adopts an inwardly concave arc spherical groove bottom that is compatible with the roller 200. The groove width of the first annular limiting blind groove 121 is smaller than the length of the roller 200. The two ends of the roller 200 extend out of the first annular limiting blind groove 121 (and extend to the outside of the two axial end surfaces of the ball bowl 300 respectively) and are limited by the limiting baffle 500.

[0063] Embodiment five: The present invention provides a durable joint assembly, embodiment 5 as shown in Fig. 20 As shown, the difference between this embodiment and the fourth embodiment is that the support pin 100 adopts Figure 4 In the fourth structure shown, the surface of the annular boss 12 is provided with first position-limiting blind grooves 122 that surround the pin body 11, and the extension direction of each first position-limiting blind groove 122 is parallel to the axial direction of the pin body 11. The length of the first position-limiting blind groove 122 is less than or equal to or slightly greater than the length of the roller 200, and the length direction of each roller 200 is placed along the length direction of the first position-limiting blind groove 122, and part or all of the length direction of each roller 200 is installed in the first position-limiting blind groove 122 and protrudes out of the first position-limiting blind groove 122 in the radial direction.

[0064] In this embodiment, the bottom of the first limiting blind groove 122 adopts an inwardly concave arc spherical groove bottom that is compatible with the roller 200. The length of the first limiting blind groove 122 is less than the length of the roller 200. The two ends of the roller 200 extend out of the first limiting blind groove 122 and are limited by the limiting baffle 500.

[0065] Embodiment six: The present invention provides a durable joint assembly, embodiment 6 is as follows Fig.21As shown, the difference between this embodiment and the fourth embodiment is that each roller 200 is relatively short and each roller 200 completely falls within the coverage of the bowl 300. The limit baffle 500 is an L-shaped plate, one arm of which serves as the blocking portion 51 of the limit baffle 500. From the axial direction, the axial inner end of the blocking portion 51 extends into the axial end surface of the bowl 300 and has a gap or movably abuts against the corresponding end of each roller 200, and there is a gap 37 in the radial direction between the minimum diameter of the bowl 300 and the blocking portion 51. The other arm of the limit baffle 500 (L-shaped plate) is located outside the axial end surface of the bowl 300, that is, there is a gap 36 in the axial direction between the other arm of the limit baffle 500 (L-shaped plate) and the axial end surface of the bowl 300. When working, the other arm of the limit baffle 500 (L-shaped plate) can be used to limit the swing angle of the bowl 300.

[0066] In this embodiment, the elastic body 400 is made of a softer elastic body, such as rubber or polyurethane, so that there is no need to set a recess at the bottom of the elastic body 400.

[0067] Embodiment seven: The present invention provides a durable joint assembly, embodiment 7 is as follows Fig.21 As shown, the difference between this embodiment and the fifth embodiment is that each roller 200 is relatively short and each roller 200 completely falls within the coverage of the bowl 300. The limit baffle 500 adopts an L-shaped plate, one arm of which serves as the blocking portion 51 of the limit baffle 500. From the axial direction, the axial inner end of the blocking portion 51 extends into the axial end surface of the bowl 300 and has a gap or movably abuts against the corresponding end of each roller 200, and there is a gap 37 in the radial direction between the minimum diameter of the bowl 300 and the blocking portion 51. The other arm of the limit baffle 500 (L-shaped plate) is located outside the axial end surface of the bowl 300, that is, there is a gap 36 in the axial direction between the other arm of the limit baffle 500 (L-shaped plate) and the axial end surface of the bowl 300. When working, the other arm of the limit baffle 500 (L-shaped plate) can be used to limit the swing angle of the bowl 300.

[0068] In this embodiment, the elastic body 400 is made of a softer elastic body, such as rubber or polyurethane, so that there is no need to set a recess at the bottom of the elastic body 400.

[0069] Embodiment eight: The present invention provides a durable joint assembly, embodiment 8 as shown in Fig. 22 As shown, the difference between this embodiment and the first embodiment is that the support pin 100 is as follows Figure 5In the fifth structure shown, the middle section of the pin body 11 is provided with an annular convex edge 13, and the outer diameter of the annular convex edge 13 is provided with an installation groove 131 which surrounds the pin body 11 and penetrates the annular convex edge 13 in the axial direction. The slot width of the installation groove 131 is slightly larger than the maximum diameter of the roller 200, which can provide space for the movable swing of the roller 200. Each roller 200 is respectively inserted into the installation groove 131 and protrudes from the outside of each installation groove 131 in the radial direction, and the axial ends of each roller 200 are respectively limited by the limit plate 500.

[0070] In this embodiment, when the elastic body 400 is made of a softer material, such as rubber or polyurethane, there is no need to set a recess at the bottom of the elastic body 400 .

[0071] Embodiment nine: The present invention provides a durable joint assembly, embodiment 9 is as follows Fig.23 As shown, the difference between this embodiment and the first embodiment is that the support pin 100 is as follows Figure 6 In the sixth structure shown, the middle section of the pin body 11 is provided with an annular protrusion 14, and the axial ends of the annular protrusion 14 are respectively provided with slopes 141 extending toward the pin body 11, and the slopes 141 extend from the axial ends of the annular protrusion 14 to connect with the pin body 11. The slopes 141 can be conical slopes or concave arc slopes. A circle of roller installation space is formed between the arc spherical area of ​​the inner side of the ball bowl 300 and the two slopes 141, and rollers 200 are movably mounted in each of the roller installation spaces. Specifically, the inner cylindrical surface of each roller 200 movably abuts against the corresponding slope 141 and is distributed around the pin body 11, and the outer cylindrical surface of each roller 200 movably abuts against the arc spherical area of ​​the inner side 33 of the ball bowl 300, and the projection of the axis of each roller 200 on the axial section of the pin body 11 is parallel to the axial direction of the pin body 11.

[0072] In this embodiment, the axial inner end surface of the blocking portion of the limiting baffle 500 can be formed as follows: Fig.14 In the structure shown, the axial inner end surface of the blocking portion of the limiting baffle 500 is provided with an annular limiting groove 53. In this embodiment, the annular limiting groove 53 is a blind groove, and there is a gap or a movable abutment between the corresponding end of each roller 200 and the groove bottom of the annular limiting groove 53, and the groove width of the annular limiting groove 53 is slightly larger than the diameter of the corresponding end of each roller 200.

[0073] Embodiment ten: The present invention provides a durable joint assembly, embodiment 10 is as follows Fig.24 As shown, the difference between this embodiment and the ninth embodiment is that the support pin 100 is as follows: Figure 7In the seventh structure shown, each slope 141 is provided with a second annular position-limiting blind groove 1411 that surrounds the pin body 11. The groove width of the second annular position-limiting blind groove 1411 is less than or equal to or slightly greater than the length of the roller 200, and each roller 200 is partially or completely installed in the second annular position-limiting blind groove 1411 in the length direction and protrudes out of the second annular position-limiting blind groove 1411 in the radial direction, and the projection of the axis of each roller 200 on the axial section of the pin body 11 is parallel to the axial direction of the pin body 11.

[0074] In this embodiment, the groove bottom of the second annular limiting blind groove 1411 adopts an inwardly concave arc spherical groove bottom that is compatible with the roller 200. The groove width of the second annular limiting blind groove 1411 is smaller than the length of the roller 200. The length direction portion of each roller 200 is installed in the second annular limiting blind groove 1411, and the outer end of each roller 200 extends out of each second annular limiting blind groove 1411 and is limited by the limiting baffle 500.

[0075] Embodiment eleven: The present invention provides a durable joint assembly, the eleventh embodiment of the present invention is as follows: Fig.24 As shown, the difference between this embodiment and the tenth embodiment is that the support pin 100 adopts Figure 8 In the eighth structure shown, each slope 141 is provided with a second position-limiting blind groove 1412 which surrounds the pin body 11, and the projection of the extension direction of each second position-limiting blind groove 1412 on the axial section of the pin body 11 is parallel to the axial direction of the pin body 11. The length of the second position-limiting blind groove 1412 is less than or equal to or slightly greater than the length of the roller 200, and the length direction of each roller 200 is placed along the length direction of the second position-limiting blind groove 1412, and part or all of the length direction of each roller 200 is installed in the second position-limiting blind groove 1412 and protrudes out of the second position-limiting blind groove 1412 in the radial direction.

[0076] In this embodiment, the bottom of the second limiting blind groove 1412 adopts an inwardly concave arc spherical groove bottom that is compatible with the roller 200. The length of the second limiting blind groove 1412 is less than the length of the roller 200. The outer ends of the rollers 200 extend out of the second limiting blind groove 1412 and are limited by the limiting baffle 500.

[0077] Embodiment 12: The present invention provides a durable joint assembly, the twelfth embodiment of the present invention is as follows: Fig.25As shown, the difference between this embodiment and the tenth embodiment or the eleventh embodiment is that the groove width of the second annular limiting blind groove 1411 or the length of the second limiting blind groove 1412 is slightly larger than the length of the roller 200, and the length direction of the roller 200 completely falls into the second annular limiting blind groove 1411 or the second limiting blind groove 1412. Each roller 200 is relatively short, and each roller 200 completely falls within the coverage range of the ball bowl 300. Both axial ends of each roller 200 completely fall within the roller installation space. The limit baffle 500 adopts an L-shaped plate, and one arm of the L-shaped plate serves as a blocking portion 51 of the limit baffle 500. From an axial point of view, the axial inner end of the blocking portion 51 extends into the axial end surface of the ball bowl 300 and has a gap or movably abuts against the corresponding end of each roller 200, and there is a gap 37 in the radial direction between the minimum diameter of the ball bowl 300 and the blocking portion 51. The other arm of the limit baffle 500 (L-shaped plate) is located outside the axial end surface of the ball bowl 300, that is, there is a gap 36 in the axial direction between the other arm of the limit baffle 500 (L-shaped plate) and the axial end surface of the ball bowl 300. When working, the other arm of the limit baffle 500 (L-shaped plate) can be used to limit the swing angle of the ball bowl 300.

[0078] In this embodiment, the elastic body 400 is made of a softer elastic body, such as rubber or polyurethane, so that there is no need to set a recess at the bottom of the elastic body 400.

[0079] Embodiment 13: The present invention provides a durable joint assembly, the thirteenth embodiment is as follows Fig.26 As shown, the difference between this embodiment and the twelfth embodiment is that the bowl 300 adopts Fig.15 In the first structure shown, the ball bowl 300 is a split structure formed by assembling two ball bowl split bodies 31, and the two ball bowl split bodies 31 are assembled axially to obtain the ball bowl 300. After assembly, the two ball bowl split bodies 31 can be overlapped together or there can be a gap between them. In this embodiment, there is a gap between the two ball bowl split bodies 31 along the axial direction, and the outer movable sleeve of the ball bowl 300 is provided with a sleeve 38 for encircling each ball bowl split body 31, so that each ball bowl split body 31 is limited in the sleeve 38; or, the ball bowl split bodies 31 can also be connected together by a connecting mechanism (such as a screw).

[0080] In this embodiment, in order to make room for the sleeve 38 to be installed, the bowl baffle 34 is an upright flat plate structure.

[0081] Embodiment 14: The present invention provides a durable joint assembly, the fourteenth embodiment is as follows Fig. 27 As shown, the difference between this embodiment and the seventh embodiment is that the bowl 300 adopts Fig.15In the first structure shown, the ball bowl 300 is a split structure formed by assembling two ball bowl parts 31, and each ball bowl part 31 is assembled along the axial direction to obtain the ball bowl 300. After assembly, the two ball bowl parts 31 can be overlapped together or there can be a gap between them. In this embodiment, there is a gap between the two ball bowl parts 31 along the axial direction, and the outer movable sleeve of the ball bowl 300 is provided with a sleeve 38 for encircling each ball bowl part 31, so that each ball bowl part 31 is limited in the sleeve 38; or, the ball bowl parts 31 can also be connected together by a connecting mechanism (such as a screw).

[0082] In this embodiment, in order to make room for the sleeve 38 to be installed, the bowl baffle 34 is an upright flat plate structure.

[0083] Embodiment 15: The present invention provides a durable joint assembly, the fifteenth embodiment of which is as follows Fig.28 As shown, the difference between this embodiment and the first embodiment is that the inner cylindrical surface and the outer cylindrical surface of each roller 200 are both in the shape of a concave arc spherical surface, a protruding arc spherical surface area 15 for matching with the inner cylindrical surface of each roller 200 is provided on the pin shaft body 11, and the inner side surface 33 of the ball bowl 300 has a protruding arc spherical surface area 331 corresponding to the outer cylindrical surface of each roller 200, and each roller 200 is distributed in a circle around the support pin 100.

[0084] In this embodiment, the concave-convex matching roller 200 and the pin shaft body 11 can already achieve axial limiting, so the limiting baffle can be omitted; of course, in order to obtain a better axial limiting effect, an axial limiting mechanism can also be set (for example, refer to the other embodiments in which the limiting baffle 500 is set, and the limiting baffle is set in the same way).

[0085] In this embodiment, the protruding arc-shaped spherical area 15 can be integrally formed on the pin body 11; or, a sleeve can be sleeved on the pin body 11, and the protruding arc-shaped spherical area is formed on the sleeve. If the protruding arc-shaped spherical area is formed by a sleeve, the sleeve is preferably limited in the axial direction by an axial limiting component to prevent axial movement.

[0086] In order to enable the ball bowl 300 to rotate and swing better, each roller 200 preferably has a rotating body structure with a consistent overall structure, that is, the entire cylindrical surface of the roller 200 is a concave arc spherical surface.

[0087] In this embodiment, the outer side surface of the ball bowl 300 is a cylindrical surface, and the elastic body 400 is directly coated on the outer side surface thereof.

[0088] Embodiment 16: The present invention provides a durable joint assembly, embodiment 16 as shown in Fig.29As shown, the difference between this embodiment and the fifteenth embodiment is that each roller 200 is distributed in two circles around the support pin 100, and the inner side surface 33 of the ball bowl 300 has two circles of protruding arc-shaped spherical areas 332 corresponding to the outer cylindrical surfaces of each roller 200.

[0089] Embodiment 17: The present invention provides a durable joint assembly, embodiment 17 as shown in Fig.30 As shown, the difference between this embodiment and the first embodiment is that: an annular mounting platform 16 is provided on the pin body 11, and an annular mounting groove 161 is provided on the annular mounting platform 16, and each roller 200 is installed in the annular mounting groove 161, and the axial direction of each roller 200 is consistent with the axial direction of the support pin 100, and the axial direction of each roller 200 is limited by the groove wall of the annular mounting groove 161. The inner cylindrical surface and the outer cylindrical surface of each roller 200 are both in the shape of a protruding arc spherical surface, and the groove bottom of the annular mounting groove 161 is in the shape of a recessed arc spherical surface that matches the inner cylindrical surface of the roller 200.

[0090] In this embodiment, the axial position of each roller 200 is limited by the groove wall of the annular mounting groove 161, and there is no need to set up a limiting mechanism (such as a limiting baffle). Of course, in order to improve the limiting effect, a limiting mechanism can also be set up (for example, referring to other embodiments in which a limiting baffle 500 is set up, a limiting baffle is set up in the same way).

[0091] In order to enable the ball bowl 300 to rotate and swing better, each roller 200 preferably has a rotating body structure with a consistent overall structure, that is, the entire cylindrical surface of the roller 200 is a protruding arc-shaped spherical surface.

[0092] In this embodiment, the outer side surface of the ball bowl 300 is a cylindrical surface, and the elastic body 400 is directly coated on the outer side surface thereof.

[0093] Embodiment 18: The present invention provides a durable joint assembly, the eighteenth embodiment of which is as follows Fig.31 As shown, the difference between this embodiment and embodiment seventeen is that: the outer side surface of the annular mounting platform 16 on the pin shaft body 11 is provided with two circles of shallow grooves 162, and the groove bottoms of the two circles of shallow grooves 162 are in the shape of a concave arc spherical surface that matches the inner cylindrical surface of the roller 200, and each roller 200 is distributed in two circles around the supporting pin 100. The two circles of rollers 200 are respectively installed in the two circles of shallow grooves 162, and the projection of the axis of each roller 200 on the axial section of the pin shaft body 11 is parallel to the axial direction of the pin shaft body 11.

[0094] In this embodiment, the concave-convex matching roller 200 and shallow groove 162 can already achieve axial limiting, so the limiting baffle can be omitted; of course, in order to obtain a better axial limiting effect, an axial limiting mechanism can also be set (for example, referring to other embodiments in which a limiting baffle 500 is set, the limiting baffle is set in the same way).

[0095] In order to enable the ball bowl 300 to rotate and swing better, each roller 200 preferably has a rotating body structure with a consistent overall structure, that is, the entire cylindrical surface of the roller 200 is a protruding arc-shaped spherical surface.

[0096] In this embodiment, the outer side surface of the ball bowl 300 is a cylindrical surface, and the elastic body 400 is directly coated on the outer side surface thereof.

[0097] The present invention provides a durable reaction rod assembly, comprising a rod body, a rod head fixedly connected to the end of the rod body, and a joint assembly respectively installed in the rod head, wherein the joint assembly adopts a durable joint assembly as described in the above embodiments. Of course, in the durable reaction rod assembly of the present invention, the joint assembly is not limited to the structures described in the above embodiments, and the above embodiments are merely examples for clearly explaining the structure of the joint assembly, and are not intended to limit the structure of the joint assembly.

[0098] The present invention is a durable reaction rod assembly, as a specific embodiment, such as Fig.32 As shown, it includes a rod body 700, a rod head 61 and a joint assembly, the rod body 700 adopts a straight rod structure, and the rod head 61 is fixedly connected to both ends of the rod body 700. The rod body 700 and each rod head 61 are connected by a conventional method, such as welding or riveting, and each rod head 61 and the rod body 700 can also adopt an integrally formed structure.

[0099] The present invention is a durable reaction rod assembly, as another specific embodiment, such as Fig.33 As shown, the rod body 700 includes a rod head 61 and a joint assembly. The rod body 700 adopts a V-shaped rod structure, and the rod body 700 is V-shaped with three ends, and the three ends are respectively connected to the rod heads 61. The rod body 700 and each rod head 61 are connected by a conventional method, such as welding or riveting. Each rod head 61 and the rod body 700 can also adopt an integrally formed structure.

[0100] Fig.34 It is an axial cross-sectional view of the club head portion of the present invention, where the club head portion includes the club head 61, the joint assembly, and some necessary accessories required for assembling the joint assembly into the club head 61, such as a club head baffle, an oil seal, a retaining spring, etc.

[0101] like Fig.34 As shown, the joint assembly is assembled in the mounting hole of the rod head 61, and a convex edge 611 is provided at one end of the mounting hole of the rod head 61, and a clamping groove for installing a clamping ring is provided at the other end. This joint assembly adopts any one of the durable joint assemblies in the above-mentioned embodiments 1 to 12.

[0102] During assembly, two rod head baffles 62 and 63 , two oil seals 64 and 65 , and a retaining ring 66 are required.

[0103] First, the oil seal 64 is embedded in the end of the mounting hole of the rod head 61 having the convex edge 611 and abutted against the convex edge 611. The outer diameter of the skeleton of the oil seals 64 and 65 is larger than the inner diameter of the convex edge 611, so that the skeleton of the oil seal 64 is clamped by the convex edge 611, and the sealing lip of the rubber body of the oil seal 64 is sealed and connected with the pin shaft body 11. Then, the rod head baffle 62 is embedded in the mounting hole of the rod head 61 and abutted against the skeleton of the oil seal 64.

[0104] After the rod head baffle 62 is installed, the durable joint assembly described above is inserted into the mounting hole of the rod head 61, and the outer peripheral surface of the elastic body 400 in the radial direction is matched and tightly clamped in the mounting hole of the rod head 61, and at least one end of the pin shaft body 11 of the support pin 100 extends out of the mounting hole of the rod head 61. Then the rod head baffle 63 and the oil seal 65 are inserted in sequence, and the sealing lip of the rubber body of the oil seal 65 is sealed and connected with the pin shaft body 11. The outer diameter of the ball bowl 300 should be larger than the inner diameter of the rod head baffles 62 and 63 and smaller than the outer diameter of the rod head baffles 62 and 63, so that the axial ends of the ball bowl 300 and the elastic body 400 are blocked by the rod head baffles 62 and 63, and finally the clamping spring 66 is installed in the clamping groove to complete the installation of the joint assembly.

[0105] When the reaction rod assembly of the present invention is working, when the vehicle is traveling on an uneven road surface, external force is transmitted from one axial end of the support pin 100, and the support pin 100 is swung in all directions such as up and down, front and back under the action of the external force, thereby driving the roller 200 to rotate axially and swing radially in the installation space between the support pin 100 and the arc spherical area of ​​the ball bowl 300. The support pin 100 and the elastomer 400 are separated by the combination of the ball bowl 300 and the roller 200, thereby preventing the external force from directly stretching and squeezing the elastomer 400. The elastomer 400 will not be stretched or squeezed by the external force and produce elastic fatigue and damage, thereby extending the service life of the elastomer.

[0106] In the present invention, the roller 200 and the ball bowl 300 are matched to separate the support pin 100 and the elastic body 400, thereby protecting the elastic body 400. Compared with the prior art, in the present invention, the roller 200 and the ball bowl 300 are matched with each other in a spherical manner, and the contact area between them is small, and the friction force is very small. When an external force acts, the roller 200 can roll, swing or slide instantly, which can effectively improve the service life of the reaction rod assembly and its joint assembly.

[0107] like Figure 35-38 The figure shows an embodiment in which the joint assembly in Embodiment 15 to Embodiment 17 is applied to a reaction rod assembly.

[0108] In various embodiments of the present invention, the roller 200 may be selected as follows: Figure 9-11 In Figure 28-30 Any one of the structural forms can be selected, and other structures can also be selected. For example, as long as there is a matching arc spherical area between the roller 200 and the ball bowl 300, the cylindrical surface of the roller 200 extending outside the ball bowl 300 can be of other shapes. The two axial ends of the roller 200 can be arc-shaped or flat-cut. In order to enable the ball bowl 300 to better achieve rotation and swing, each roller 200 preferably has a rotating body structure with the same overall structure, that is, the entire cylindrical surface of the roller 200 is an arc spherical surface. The axial outer end of the roller 200 can fall within the range of the ball bowl 300, or it can be flush with the axial ends of the ball bowl 300, or it can extend out of the axial ends of the ball bowl 300.

[0109] In each embodiment of the present invention, a roller mounting frame installed in the installation space can also be provided, the roller mounting frame is movably mounted on the support pin 100, each roller 200 is movably mounted on the roller mounting frame, the outer cylindrical surface of each roller 200 is exposed from the outer side surface of the roller mounting frame and is matched with the ball bowl 300, and the inner cylindrical surface of each roller 200 is exposed from the inner side surface of the roller mounting frame and is matched with the support pin 100 in the manner of the above embodiments, so that each roller 200 can rotate freely on the roller mounting frame. In the present invention, the roller mounting frame used can adopt the existing conventional roller mounting frame. The roller mounting frame is added in the present invention only to connect each roller 200 into a relatively movable whole to improve the structural stability of the joint assembly. After each roller 200 is installed on the roller mounting frame, it can also be arranged in coordination with the support pin 100 in the various distribution modes described above.

[0110] In the present invention, when the inner cylindrical surface 23 of the roller is a concave semi-cylindrical surface, the axial ends of the roller 200 can adopt a flush structure, and the circumferential edges of each roller 200 match each other. A plurality of rollers 200 are circumferentially assembled to form an arc-shaped spherical surface with an outer cylindrical surface as a closed loop, and the inner cylindrical surface forms a hollow cylindrical surface that matches the pin shaft body 11.

[0111] In various embodiments of the present invention, the bowl 300 can be made of Figure 15-16 and Figure 26-27 The split structure shown in the figure can also be an integral structure. Fig.15 or Fig.16 or Fig.26 or Fig. 27 The split structure shown is more conducive to the installation of the roller 200. Specifically, when the ball bowl 300 adopts an axially spliced ​​structure of two ball bowl splits 31, during installation, one of the ball bowl splits 31 can be sleeved on the support pin 100 first, and then each roller 200 can be installed. After each roller 200 is installed, the other ball bowl split 31 can be sleeved on the support pin 100 and spliced ​​together, which can effectively avoid the problem that the middle section of the roller 200 (where the diameter is larger) cannot enter due to the openings at both ends of the axial direction of the roller installation space being too small. When the ball bowl 300 adopts a circumferentially assembled structure of two ball bowl parts 32, during installation, a viscous lubricant such as butter can be first applied to the inner side surface of each ball bowl part 32, and then each roller 200 is adhered to the inner side surface of each ball bowl part 32 in a set direction, and then each ball bowl part 32 with the roller 200 adhered is assembled to the outside of the support pin 100. This can also effectively avoid the problem that the openings at the axial ends of the roller installation space are too small, resulting in the middle section of the roller 200 (where the diameter is larger) being unable to enter.

[0112] In various embodiments of the present invention, the outer side surface of the ball bowl 300 may also be a cylindrical surface, and the elastic body 400 is directly coated on the outer side surface thereof.

[0113] In various embodiments of the present invention, the elastomer 400 may be a common softer elastomer, such as rubber. The elastomer 400 may also be modified from a hard material, such as nylon, polyurethane, polyvinyl chloride, etc., which are modified from chemical raw materials. Of course, materials such as nylon, polyurethane, polyvinyl chloride, etc. may also be modified to obtain a softer elastomer. When a harder elastomer is used, a recess 41 may be provided at the bottom of the elastomer 400 to leave space for elastic deformation of the elastomer 400. When a softer elastomer is used, no recess may be provided at the bottom of the elastomer.

[0114] In various embodiments of the present invention, the limiting baffle 500 is used to limit the roller 200 to prevent the roller 200 from completely jumping out of the bowl 300, and when the roller 200 completely falls within the coverage of the bowl 300 in the axial direction, the limiting baffle 500 is also used to limit the swing angle of the bowl 300. Therefore, the structure of the limiting baffle 500 can adopt a variety of structures, such as a flat plate structure, an L-shaped plate, or other structures. When the roller 200 completely falls within the coverage of the bowl 300 in the axial direction, the axial inner end of the blocking portion 51 of the limiting baffle 500 extends into the coverage of the bowl 300 and has a gap or movably abuts against the corresponding end of each roller 200, and there is a gap between the blocking portion 51 and the minimum diameter of the bowl 300 in the radial direction. When the two axial ends of the roller 200 extend out and fall into the coverage range of the ball bowl 300, the blocking portion 51 of the limit baffle 500 is located outside the axial ends of the ball bowl 300, and there is a gap in the axial direction between the blocking portion 51 of the limit baffle 500 and the two axial end surfaces of the ball bowl 300.

[0115] In various embodiments of the present invention, when the roller 200 completely falls within the coverage of the bowl 300 in the axial direction, an inner baffle (or convex edge) may be provided on the support pin 100 near the two axial ends of the roller 200, and an outer baffle may be provided on the support pin 100 outside the two axial ends of the bowl 300. The roller 200 is limited by the inner baffle (or convex edge), and there is a gap in the radial direction between the inner baffle (or convex edge) and the minimum diameter of the bowl 300, and there is a gap in the axial direction between the baffle and the two axial end surfaces of the bowl 300, and the baffle can be used to limit the swing angle of the bowl 300.

[0116] In various embodiments of the present invention, the axial inner end surface of the blocking portion 51 of each limit baffle 500 preferably has the following three structures. In various embodiments of the present invention, the axial inner end surface of the blocking portion of the limit baffle 500 can adopt any one of the three structures.

[0117] The first structure of the axial inner end surface of the blocking portion of the limiting baffle 500 is as follows: Fig.12 As shown, the axial inner end surface of the blocking portion of the limiting baffle 500 is a flat plate structure.

[0118] The second structure of the axial inner end surface of the blocking portion of the limiting baffle 500 is as follows: Fig.13 As shown, the axial inner end surface of the blocking portion 51 of each limiting baffle 500 is a flat plate structure, and a limiting hole 52 is provided on the axial inner end surface of the blocking portion 51 corresponding to the corresponding end of each roller 200. The limiting hole 52 can be a through hole or a blind hole. Fig.13The one shown in the figure is a blind hole. When the limiting holes 52 are blind holes, the diameter of each limiting hole 52 is slightly larger than the diameter of the corresponding end of each roller 200, and there is a gap or a movable abutment between the corresponding end of each roller 200 and the bottom of each limiting hole 52. The limiting holes 52 can also be set as trumpet holes with a small mouth and a large inside, leaving a larger space for the corresponding end of each roller 200 to move and swing. When the limiting holes 52 are through holes, since the roller 200 is an arc-shaped spherical roller, its two ends in the axial direction are thinner and the middle section is thicker. The limiting holes 52 are set with a suitable diameter, so that the two ends of the roller 200 can be movably inserted into the through hole and the roller 200 will not jump out completely, so that the corresponding ends of each roller 200 are limited by each limiting hole 52. For example, the diameter of the limiting hole 52 may be larger than the diameter of the corresponding end of the roller 200 (but smaller than the maximum diameter of each roller 200), so that space for the corresponding end of each roller 200 to move and swing can be reserved.

[0119] The third structure of the axial inner end surface of the blocking portion of the limiting baffle 500 is as follows: Fig.14 As shown, the axial inner end face of the blocking portion 51 of each limiting baffle 500 is a flat plate structure, and an annular limiting groove 53 is provided on the axial inner end face of the blocking portion 51 corresponding to the corresponding end of each roller 200. The annular limiting groove 53 is a blind groove, and the groove width of each annular limiting groove 53 is slightly larger than the diameter of the corresponding end of each roller 200, and a gap is left between the corresponding end of each roller 200 and the groove bottom of each annular limiting groove 53 or they are movably abutted against each other. The annular limiting groove 53 can also be set to a structure with a small mouth and a large inside, leaving a larger space for the corresponding end of each roller 200 to move and swing.

[0120] In the embodiments of the present invention, the annular limiting grooves, the annular limiting blind grooves and the mounting grooves for mounting the roller 200 may have groove bottoms that are concave arcuate spherical groove bottoms that match the roller 200, or conventional flat groove bottoms, or convex arcuate groove bottoms. When the groove bottoms are concave arcuate spherical groove bottoms that match the roller 200, regardless of whether the two ends of the roller 200 extend outside the groove, the concave arcuate spherical groove bottom has a certain limiting effect on the roller 200, and the limiting baffle 500 may not be provided. Of course, a better limiting effect can be obtained by providing the limiting baffle 500.

[0121] Theoretically, any rolling body can be used in conjunction with the ball bowl. In the present invention, rollers are selected as rolling bodies because they have a large bearing pressure in the radial direction, which can further improve the reliability of the structure while satisfying the requirement of low friction, and further ensure the service life of the reaction rod assembly.

[0122] In Examples 1 to 8 of the present invention, as well as Examples 14, 15 and 17, in order to more clearly reflect the structural relationship between the various components, the axial direction of each roller 200 is set to be parallel to the axial direction of the support pin 100. In fact, the axial direction of each roller 200 may also be non-parallel to the axial direction of the support pin 100, as long as the outer cylindrical surface of each roller 200 and the inner surface of the ball bowl 300 satisfy the spherical matching relationship, each roller 200 and the ball bowl 300 can move normally relative to each other.

[0123] In Embodiments 9 to 12 of the present invention, as well as Embodiment 13, Embodiment 16 and Embodiment 18, in order to more clearly reflect the structural relationship of the various components, the projection of the axis of each roller 200 on the axial section of the supporting pin 100 is parallel to the axial direction of the supporting pin 100. In fact, the projection of the axis of each roller 200 on the axial section of the supporting pin 100 may also be non-parallel to the axial direction of the supporting pin 100, as long as the outer cylindrical surface of each roller 200 and the inner surface of the ball bowl 300 satisfy the spherical matching relationship, each roller 200 and the ball bowl 300 can move normally relative to each other.

[0124] In the present invention, the pin body 11 of the supporting pin 100 can adopt a variety of structures. For example, the pin body 11 passes through the part outside the axial ends of the ball bowl 300, and can adopt a structure with one end thick and the other end thin; for example, the connecting holes set on the part of the pin body 11 passing through the axial ends of the ball bowl 300 can be set with one connecting hole or multiple connecting holes at one end, and the number of connecting holes at the two ends can be the same or different; for example, the two ends of the pin body 11 pass through the corresponding axial end faces of the ball bowl 300, a connecting hole is set at one end, and no connecting hole is set at the other end.

[0125] In the present invention, the rod body of the reaction rod may adopt a common structure such as an X-rod, a cross-rod, etc. in addition to the straight rod structure and the V-rod structure in the above embodiments.

[0126] In the present invention, a spacer sleeve may be sleeved on the support pin 100, the inner side of the spacer sleeve matches the support pin 100, and the outer side of the spacer sleeve may be a cylindrical surface. In order to make the spacer sleeve more compatible with the roller 200, the outer side of the spacer sleeve preferably adopts a shape that matches the inner cylindrical surface of each roller 200. Each roller 200 is movably assembled between the spacer sleeve and the arc spherical area of ​​the bowl 300. The spacer sleeve may be movably sleeved on the support pin 100 or may be fixedly sleeved on the support pin 100. When the movably sleeved method is adopted, a limit device may be provided in the axial direction of the support pin 100 to limit the axial sliding of the spacer sleeve.

[0127] In the present invention, the "arc spherical surface" (including protruding and concave "arc spherical surfaces") mentioned herein defines shapes including spherical surfaces and shapes close to spherical surfaces. The drawings of the present invention are only schematic diagrams of the structures of the embodiments. The size ratios and shapes of the drawings are only to help understand the text description. If there is any discrepancy between the drawings and the text description, the text description shall prevail.

[0128] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other changes or modifications in different structural forms can be made based on the above description, and it is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A durable joint assembly, characterized in that: The present invention comprises a supporting pin, a roller, a ball bowl, and an elastomer; the supporting pin comprises a pin shaft body, which divides the cylindrical surface of the roller into an inner cylindrical surface and an outer cylindrical surface, and the outer cylindrical surface of the roller has an arc-shaped spherical surface area; the ball bowl is movably sleeved on the supporting pin, and the inner side surface of the ball bowl has an arc-shaped spherical surface area corresponding to the arc-shaped spherical surface area of ​​the outer cylindrical surface of each roller, and at least one circle of roller installation space surrounding the supporting pin is formed between the supporting pin and the arc-shaped spherical surface area of ​​the ball bowl; a plurality of rollers are movably assembled in each of the roller installation spaces, and the axial ends of each of the rollers completely fall into the roller installation space or extend out of the roller installation space, and after each of the rollers is assembled, the supporting pin can freely rotate and / or swing relative to the ball bowl, and a limiting mechanism for limiting the position of each of the rollers is arranged on the supporting pin; the elastomer is surrounded and arranged on the outer side surface of the ball bowl.

2. A durable joint assembly according to claim 1, characterized in that: Each of the rollers is distributed around the supporting pin in a circle, and a limit baffle is provided on the pin shaft body of the supporting pin to limit the two ends of each of the rollers respectively. There is a gap or a movable abutment between each of the limit baffles and the corresponding end of each of the rollers, and a gap is left between the limit baffle and the ball bowl in the radial direction and / or axial direction.

3. A durable joint assembly according to claim 1, characterized in that: An annular boss is provided in the middle section of the pin shaft body of the supporting pin, and a first annular limit blind groove is provided on the surface of the annular boss, which surrounds the pin shaft body of the supporting pin and has a groove width less than or equal to or greater than the length of the roller. Part or all of the length direction of each roller is installed in the first annular limit blind groove, and the radial direction of each roller protrudes out of the first annular limit blind groove; a limit baffle is provided on the pin shaft body of the supporting pin for limiting the two ends of the roller respectively, and each limit baffle has a gap or moves against the corresponding end of each roller, and a gap is left between the limit baffle and the ball bowl in the radial direction or / and axial direction.

4. A durable joint assembly according to claim 1, characterized in that: An annular protrusion is provided in the middle section of the pin shaft body of the supporting pin, and slopes extending toward the pin shaft body of the supporting pin are respectively provided at the axial ends of the annular protrusion, and each of the slopes is respectively provided with a second annular limiting blind groove which surrounds the pin shaft body of the supporting pin and has a groove width less than or equal to or greater than the length of the roller, and all or part of the length direction of each roller is installed in the second annular limiting blind groove and protrudes out of the second annular limiting blind groove in the radial direction; limiting baffles are provided on the pin shaft body of the supporting pin for limiting the outer ends of the rollers respectively, and there is a gap or movably abutting against each other between each of the limiting baffles and the corresponding ends of each of the rollers, and a gap is left between the limiting baffle and the ball bowl in the radial direction or / and the axial direction.

5. A durable joint assembly according to claim 1, characterized in that: An annular protrusion is provided in the middle section of the pin shaft body of the supporting pin, and slopes extending toward the pin shaft body of the supporting pin are respectively provided at the axial ends of the annular protrusion, and each of the slopes is respectively spaced apart and provided with a second limiting blind groove surrounding the pin shaft body of the supporting pin, and the length of each of the second limiting blind grooves is less than or equal to or greater than the length of the roller, and part or all of each of the rollers is respectively correspondingly installed in the second limiting blind groove and protrudes out of the second limiting blind groove in the radial direction; limiting baffles are respectively provided on the pin shaft body of the supporting pin for limiting the outer ends of the rollers, and each of the limiting baffles has a gap or movably abuts against the corresponding ends of each of the rollers, and a gap is left between the limiting baffle and the ball bowl in the radial direction or / and the axial direction.

6. A durable joint assembly according to any one of claims 2-5, characterized in that: The limiting baffle has a blocking portion for blocking the corresponding ends of each of the rollers; the blocking portion is a flat plate structure, or a limiting hole is opened on the blocking portion corresponding to the corresponding ends of each of the rollers, or an annular limiting groove is opened on the blocking portion corresponding to the corresponding ends of each of the rollers.

7. A durable joint assembly according to any one of claims 1 to 5, characterized in that: The inner cylindrical surface of the roller has an arc-shaped spherical surface area; or, the inner cylindrical surface of the roller is a plane; or, the inner cylindrical surface of the roller is a concave semi-cylindrical surface.

8. A durable joint assembly according to claim 1, characterized in that: The inner cylindrical surface of each roller has a concave arc-shaped spherical area, and the pin shaft body is provided with a protruding arc-shaped spherical area for matching with the inner cylindrical surface of each roller; each roller is distributed around the supporting pin in one or two circles.

9. A durable joint assembly according to claim 8, characterized in that: The protruding arc-shaped spherical surface area is integrally formed on the pin shaft body; or, a shaft sleeve is sleeved on the pin shaft body, and the protruding arc-shaped spherical surface area is formed on the shaft sleeve.

10. A durable joint assembly according to any one of claims 1, 2, 3, 4, 5, 8, and 9, characterized in that: The ball bowl is a split structure formed by splicing two or more ball bowls separately.

11. A durable joint assembly according to claim 10, characterized in that: The ball bowl is obtained by circumferentially splicing the ball bowl parts, or axially splicing the ball bowl parts.

12. A durable joint assembly according to any one of claims 1, 2, 3, 4, 5, 8, and 9, characterized in that: A ball bowl baffle is arranged along the outer side end of the ball bowl, and the outer side of the ball bowl and the ball bowl baffle enclose a receiving space. The elastomer is filled in the receiving space and protrudes out of the ball bowl baffle in the radial direction.

13. A durable joint assembly according to any one of claims 1, 2, 3, 4, 5, 8, and 9, characterized in that: It also includes a roller mounting frame arranged in the installation space, and each of the rollers is movably mounted on the roller mounting frame. The outer cylindrical surface of each roller is exposed from the outer side surface of the roller mounting frame to correspond to the ball bowl, and the inner cylindrical surface of each roller is exposed from the inner side surface of the roller mounting frame to correspond to the support pin.

14. A durable joint assembly according to any one of claims 1, 2, 3, 4, 5, 8, and 9, characterized in that: The support pin is sleeved with an isolation sleeve, and each of the rollers is movably assembled between the isolation sleeve and the arc-shaped spherical surface area of ​​the ball bowl.

15. A durable joint assembly according to claim 10, characterized in that: The outer movable sleeve of the ball bowl is provided with a sleeve for encircling each of the ball bowl parts; or, each of the ball bowl parts is connected together by a connecting mechanism.

16. A durable reaction rod assembly, comprising a rod body, a rod head fixedly connected to the end of the rod body, and a joint assembly respectively installed in the rod head, characterized in that: The joint assembly adopts a durable joint assembly as described in any one of claims 1, 2, 3, 4, 5, 8, and 9.

17. A durable reaction rod assembly according to claim 16, characterized in that: The limiting baffle has a blocking portion for blocking the corresponding ends of each of the rollers; the blocking portion is a flat plate structure, or a limiting hole is opened on the blocking portion corresponding to the corresponding ends of each of the rollers, or an annular limiting groove is opened on the blocking portion corresponding to the corresponding ends of each of the rollers.

18. A durable reaction rod assembly according to claim 16, characterized in that: The ball bowl is a split structure formed by splicing two or more ball bowls separately.

19. A durable reaction rod assembly according to claim 18, characterized in that: The ball bowl is obtained by circumferentially splicing the ball bowl parts, or axially splicing the ball bowl parts.

20. A durable reaction rod assembly according to claim 16, characterized in that: A ball bowl baffle is arranged along the outer side end of the ball bowl, and the outer side of the ball bowl and the ball bowl baffle enclose a receiving space. The elastomer is filled in the receiving space and protrudes out of the ball bowl baffle in the radial direction.

21. A durable reaction rod assembly according to claim 16, characterized in that: It also includes a roller mounting frame arranged in the installation space, and each of the rollers is movably mounted on the roller mounting frame. The outer cylindrical surface of each roller is exposed from the outer side surface of the roller mounting frame to correspond to the ball bowl, and the inner cylindrical surface of each roller is exposed from the inner side surface of the roller mounting frame to correspond to the support pin.

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