Heavy truck ball pin with surface even vulcanization

Abstract

The utility model relates to a heavy truck ball pin of surface even vulcanization belongs to heavy truck ball pin technical field, the heavy truck ball pin of surface even vulcanization, include: ball pin body and the ball seat of setting in its ball head part, protection subassembly, through setting up the buffer ring of rubber material in protection subassembly, can when the swing amplitude of pin rod of ball pin body is too big when the load of the hydraulic system of car is too big, buffer protection between pin rod and ball seat opening edge part, prevent mutual abrasion and influence operation smoothness, can also improve the service life and structural strength of ball pin body, through buffer ring is set up as the design of inverted flat top cone, and set up the pressure point of flat sphere on the surface of buffer ring, can when the edge of ball seat and pressure point contact, utilize the camber surface of pressure point to cooperate with the extrusion of slide strip to buffer ring, make buffer ring micro -range rotation, improve the pressure uniformity of buffer ring, reduce the fragile phenomenon of single part repeated pressure.

Description

Technical Field

[0001] This utility model relates to the field of heavy truck ball pin technology, and in particular to a heavy truck ball pin with uniformly vulcanized surface. Background Technology

[0002] Ball joints are key components in the suspension system of heavy-duty trucks, primarily used to connect the wheels and the chassis, bearing the vertical and lateral loads of the wheels. Through the cooperation of the ball joint and the sleeve, the ball joint enables the movement and support of the steering and suspension systems, ensuring smooth vehicle operation and handling performance.

[0003] Referring to the case "A Ball Pin" (publication number CN209458281U), this utility model discloses a ball pin, relating to the field of automotive parts technology. Its key technical features are: it includes an integrally fixed ball head and pin rod; the end of the pin rod facing away from the ball head is threaded; an arc-shaped transition surface is provided between the ball head and the pin rod; the spherical surface of the ball head smoothly transitions to the outer wall of the pin rod through the transition surface. The wall surface of the ball head facing away from the pin rod is a spherical end face, which is flat; an oil groove is formed at the center of the spherical end face. This ball pin, by providing a transition surface, significantly strengthens the structural strength between the ball head and the pin rod, making them less prone to breakage; the spherical end face and oil groove increase the oil storage space between the ball head and the ball head seat to ensure lubrication; and the pin hole, after installing a cotter pin, provides an anti-loosening effect for the bolt, resulting in high reliability.

[0004] Although the aforementioned ball pin has a transition surface to improve the structural strength between the ball head and the pin, if the hydraulic system of the car is subjected to a large load and the pin twists too much, it will come into contact with the edge of the ball seat and generate friction. Long-term operation will cause wear, affect the service life of the ball pin, and even lead to component damage. Utility Model Content

[0005] Therefore, it is necessary to provide a heavy-duty truck ball pin with a uniformly vulcanized surface to address the problem that the lack of a protective structure at the pin rod of the aforementioned ball pin makes it easy for the pin rod to come into contact with the ball seat and generate friction when the hydraulic system is overloaded.

[0006] A heavy-duty truck ball pin with uniformly vulcanized surface includes: a ball pin body and a ball seat sleeved on its ball head portion;

[0007] Protective component, wherein the protective component is sleeved on the surface of the ball pin;

[0008] The protective component includes a buffer ring fitted onto the surface of the ball pin body, and the surface of the buffer ring is provided with pressure points.

[0009] In one embodiment, the pressure points are arranged in a ring array and are of a flattened spherical design.

[0010] In one embodiment, the pressure points are arranged vertically, the arc-shaped edges of the pressure points correspond to the openings of the ball seats, and the surface of the buffer ring is provided with reinforcing strips between the multiple pressure points.

[0011] In one embodiment, the buffer ring has an inverted flat-topped cone shape when viewed from the front, and the buffer ring is made of rubber.

[0012] In one embodiment, the inner wall of the buffer ring is provided with a slide bar, the slide bar is sleeved on the surface of the ball pin body, and there are two slide bars evenly distributed inside the buffer ring, above and below.

[0013] In one embodiment, the ball head surface of the ball pin body is provided with a threaded groove, and multiple threaded grooves are provided in a circular array. The groove depth of the threaded groove is 0.3 mm, and the pitch of each threaded groove is 5 mm.

[0014] In one embodiment, the ball head surface of the ball pin body is provided with a vulcanized rubber layer, and the outer surface of the vulcanized rubber layer is in contact with the inner wall of the ball seat.

[0015] Beneficial effects

[0016] 1. By setting a rubber buffer ring in the protective component, when the hydraulic system of the car is overloaded and the pin of the ball pin body swings too much, the buffer protection between the pin and the edge of the ball seat opening can be provided to prevent mutual wear and affect the smoothness of operation. At the same time, it can also improve the service life and structural strength of the ball pin body.

[0017] 2. By setting the buffer ring as an inverted flat-top conical design and setting the flat spherical pressure point on the surface of the buffer ring, when the edge of the ball seat contacts the pressure point, the arc surface of the pressure point can be used to cooperate with the slider to squeeze the buffer ring, so that the buffer ring rotates slightly, improving the uniformity of the pressure on the buffer ring and reducing the easy damage caused by repeated pressure on a single part. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2This is a schematic diagram of the internal structure of the ball seat of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the protective component of this utility model;

[0022] Figure 4 This is a front-view structural diagram of the buffer ring of this utility model;

[0023] Figure 5 This is a schematic diagram showing the disassembled surface structure of the ball head of the ball pin body of this utility model.

[0024] Figure label:

[0025] 1. Ball seat; 2. Ball pin body; 3. Protective components; 301. Buffer ring; 302. Sliding strip; 303. Pressure point; 304. Reinforcing strip; 4. Threaded groove; 5. Vulcanized rubber layer. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0031] The following is combined with Figures 1-5 The present invention describes the heavy truck ball pin body 2 with uniformly vulcanized surface.

[0032] In one embodiment, a heavy truck ball pin with uniformly vulcanized surface includes: a ball pin body 2 and a ball seat 1 sleeved on its ball head portion;

[0033] Protective component 3 is sleeved on the surface of ball pin body 2;

[0034] like Figure 2 , Figure 3 and Figure 4 As shown, the protective component 3 includes a buffer ring 301 fitted onto the surface of the ball pin body 2. The surface of the buffer ring 301 is provided with pressure points 303. Multiple pressure points 303 are arranged in a ring array and are flattened spherical in shape. The buffer ring 301 has an inverted flat-top cone shape when viewed from the front. The material of the buffer ring 301 is rubber. The inner wall of the buffer ring 301 is provided with a slide bar 302. The slide bar 302 is fitted onto the surface of the ball pin body 2. There are two slide bars 302, which are evenly distributed on the upper and lower sides of the inside of the buffer ring 301.

[0035] If the hydraulic system of the car is overloaded and the pin of the ball pin body 2 swings too much, the pin of the ball pin body 2 will first drive the buffer ring 301 to move closer to the opening edge of the ball seat 1. At this time, the pressure point 303 on the surface of the buffer ring 301 will contact the opening edge of the ball seat 1. Under the influence of pressure, the pressure part of the rubber buffer ring 301 will shrink and buffer the squeezing force.

[0036] When the edge of the opening of the ball seat 1 comes into contact with the pressure point 303, since the opposing position of the pressure point 303 and the edge of the opening of the ball seat 1 is pointed and cannot provide a stable fulcrum when the two come into contact, the pressure point 303 will slip off from the contact point with the edge of the opening of the ball seat 1, thereby forming an eccentric compression on the buffer ring 301. At this time, the buffer ring 301 will rotate slightly through the slider 302, so that the other pressure point 303 is aligned with the edge of the opening of the ball seat 1.

[0037] When the pressure point 303 slips out, it can also relieve the pressure between the pin rod of the ball pin body 2 and the ball seat 1, reduce the pressure on the pressure point 303, and transfer the pressure to the rubber ring.

[0038] In this way, when the pin drives the buffer ring 301 to press against the edge of the ball seat 1 opening, other pressure points 303 can be used for support, which can reduce the easy damage caused by repeated pressure on a single part.

[0039] The pressure point 303 is arranged vertically, and the arc-shaped edge of the pressure point 303 corresponds to the opening of the ball seat 1. A reinforcing strip 304 is provided on the surface of the buffer ring 301 and between multiple pressure points 303.

[0040] like Figure 5 As shown, the ball head surface of the ball pin body 2 is provided with a threaded groove 4. Multiple threaded grooves 4 are provided in a ring array. The groove depth of the threaded groove 4 is 0.3mm, and the pitch of each threaded groove 4 is 5mm.

[0041] A vulcanized rubber layer 5 is provided on the ball head surface of the ball pin body 2, and the outer surface of the vulcanized rubber layer 5 is in contact with the inner wall of the ball seat 1.

[0042] A threaded groove 4 and a vulcanized rubber layer 5 are provided on the ball head surface of the ball pin body 2. The vulcanized rubber layer 5 covers the surface of the ball head, and the threaded groove 4 is also filled with vulcanized rubber. In actual use, the threaded groove 4 can not only bite and prevent the vulcanized rubber layer 5 from falling off or shifting, but also the regular distribution of the threaded groove 4 makes the rubber layer thickness more consistent, so that it can deform evenly when under force, avoid local overload, and make the shock absorption effect more stable.

[0043] Through the vulcanized rubber layer 5: When the vehicle passes over bumpy roads or is subjected to impact loads, the rubber layer can absorb vibration and impact force, reduce hard collisions between the metal ball head and the ball seat 1, reduce component wear and noise, and the rubber layer is softer than metal, which can reduce direct friction between the ball head and the ball pin body 2, avoid premature wear of the metal surface, and extend service life.

[0044] The steps for setting the vulcanized rubber layer 5 on the ball head surface of the ball pin body 2 are as follows: First, the pre-treated ball pin body 2 is fixed in the lower mold of the mold, the upper mold is closed to form a closed cavity, and then the compound rubber is injected through the injection port. At the same time, the hydraulic equalization system applies an equalization pressure of 12MPa, and then the temperature is raised to 160℃ and held for 20 minutes. The spiral groove structure guides the rubber to flow in a directional manner. Finally, after cooling and opening the mold, the electroplated copper layer and the rubber form a chemical bond with a bonding strength of 25MPa, thus forming the vulcanized rubber layer 5.

[0045] It should be noted that: before processing the above-mentioned vulcanized rubber layer 5, the ball pin body 2 needs to be sandblasted, and the surface roughness should be controlled within Ra3.2-6.3μm. At the same time, the mold should be preheated to 80℃ to reduce the temperature gradient, and the preheating time should not be less than 30 minutes. The injection speed should be controlled at 50g / s to avoid turbulence and air bubbles. During the pressure holding stage, the pressure fluctuation should not exceed 5% of the rated value.

[0046] Working principle: In actual use, if the hydraulic system of the car is overloaded, causing the pin of the ball pin body 2 to swing excessively, the pin of the ball pin body 2 will first drive the buffer ring 301 to move closer to the opening edge of the ball seat 1. At this time, the pressure point 303 on the surface of the buffer ring 301 will contact the opening edge of the ball seat 1. Under the influence of pressure, the rubber buffer ring 301 will buffer the compressive force. At the same time, the opening edge of the ball seat 1 contacts the smooth pressure point 303, utilizing the arc shape of the pressure point 303. When the pressure point 303 and the buffer ring 301 are squeezed, the buffer ring 301 will rotate slightly through the slider 302 after being squeezed eccentrically, so that the other pressure point 303 is aligned with the edge of the opening of the ball seat 1. At the same time, it can also relieve the pressure between the pin of the ball pin body 2 and the ball seat 1. In this way, when the pin drives the buffer ring 301 to squeeze the edge of the opening of the ball seat 1 again, it can be supported by other pressure points 303, which can reduce the easy damage caused by repeated pressure on a single part.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A heavy-duty truck ball pin with uniformly vulcanized surface, characterized in that, include: Ball pin body (2) and ball seat (1) fitted onto its ball head portion; Protective component (3), which is sleeved on the surface of the ball pin; The protective component (3) includes a buffer ring (301) fitted onto the surface of the ball pin body (2), and the surface of the buffer ring (301) is provided with pressure points (303).

2. The heavy truck ball pin with uniform surface vulcanization according to claim 1, characterized in that, The pressure points (303) are arranged in a ring array and are of multiple shapes. The pressure points (303) are designed in a flattened spherical shape.

3. The heavy truck ball pin with uniform surface vulcanization according to claim 1, characterized in that, The pressure point (303) is arranged vertically, and the arc-shaped edge of the pressure point (303) corresponds to the opening of the ball seat (1). The surface of the buffer ring (301) and the space between the multiple pressure points (303) are provided with reinforcing strips (304).

4. The heavy truck ball pin with uniform surface vulcanization according to claim 1, characterized in that, The buffer ring (301) has an inverted flat-top cone shape when viewed from the front, and the material of the buffer ring (301) is rubber.

5. The heavy truck ball pin with uniform surface vulcanization according to claim 1, characterized in that, The inner wall of the buffer ring (301) is provided with a slide bar (302), the slide bar (302) is sleeved on the surface of the ball pin body (2), and there are two slide bars (302) evenly distributed on the upper and lower sides of the buffer ring (301).

6. The heavy truck ball pin with uniform surface vulcanization according to claim 1, characterized in that, The ball head surface of the ball pin body (2) is provided with a threaded groove (4). The threaded groove (4) is arranged in a ring array with multiple grooves. The groove depth of the threaded groove (4) is 0.3 mm, and the pitch of each threaded groove (4) is 5 mm.

7. The heavy truck ball pin with uniform surface vulcanization according to claim 1, characterized in that, The ball head surface of the ball pin body (2) is provided with a vulcanized rubber layer (5), and the outer surface of the vulcanized rubber layer (5) is in contact with the inner wall of the ball seat (1).

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