A V-type thrust rod

Abstract

The utility model discloses a V type thrust rod, including first pole body and second pole body, one end of first pole body is equipped with first connecting part, one end of second pole body is equipped with second connecting part, and first connecting part is connected with second connecting part to make first pole body and second pole body present V type, wherein, the first end surface of first connecting part sets up the outer convex stopper, and the second end surface of second connecting part sets up the inner recessed stopper of embedding with outer convex stopper, and outer convex stopper and inner recessed stopper are in the embedding position, and the first end surface and second end surface are pasted and coaxial. The utility model discloses a embedding stopper is used instead of screw connection and is combined together with two pole bodies, improves the positioning accuracy, and reduces the weight simultaneously.

Description

Technical Field

[0001] This utility model relates to automotive parts, and in particular to a V-shaped thrust rod. Background Technology

[0002] In heavy-duty commercial vehicle suspension systems, V-type thrust rods are commonly used components. Their main function is to transfer loads and maintain the posture of the chassis and axle. A V-type thrust rod generally consists of a V-type thrust rod housing and a torque core. Currently, existing V-type thrust rods are typically manufactured by connecting the two rods using screws. This connection method has the following drawbacks: screw connections require the design of flanges, bolts, nuts, and washers, adding extra weight; screw connections rely on the fit between the bolt and bolt hole for alignment during positioning, resulting in assembly gaps and making it difficult to guarantee positioning accuracy. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a V-shaped thrust rod, which connects the two rods of the V-shaped thrust rod through a fitting stop, thus solving the problems of increased weight and low positioning accuracy caused by screw connections.

[0004] To achieve the above objectives, this utility model provides a V-shaped thrust rod, including a first rod body and a second rod body. One end of the first rod body is provided with a first connecting portion, and one end of the second rod body is provided with a second connecting portion. The first connecting portion and the second connecting portion are connected to make the first rod body and the second rod body form a V shape. The first end face of the first connecting portion is provided with an outwardly protruding stop; the second end face of the second connecting portion is provided with an inwardly concave stop that fits into the outwardly protruding stop. When the outwardly protruding stop and the inwardly concave stop are in the fitting position, the first end face and the second end face are in contact and coaxial.

[0005] The outer periphery of the convex stop and / or the concave stop is provided with a first bevel.

[0006] The cross-sections of the convex stop and the concave stop are circular, elliptical, or rounded polygonal.

[0007] The first neck of the first connecting portion is key-connected to the second neck of the second connecting portion.

[0008] A first keyway is provided on the third end face of the first neck, and the first keyway is located on the first axis of the first rod. A second keyway is provided on the fourth end face of the second neck, and the second keyway is located on the second axis of the second rod. The first keyway and the second keyway are arranged opposite to each other.

[0009] The first keyway and the second keyway have the same size, and a flat key is provided in the first keyway and the second keyway.

[0010] A second bevel is provided on the outer periphery of the third end face and / or the fourth end face.

[0011] The first connecting part is provided with a first through seat hole for accommodating the first torque rubber core; the second connecting part is provided with a second through seat hole for accommodating the first torque rubber core.

[0012] Both the first through-hole and the second through-hole are provided with a first annular groove, and the first torque core is fixed by a first snap ring.

[0013] The first rod has a third seat hole at the other end, and the second rod has a fourth seat hole at the other end. The third seat hole and the fourth seat hole are stepped holes, and the second torque core is fixed by a second snap ring.

[0014] The first bevel and the second bevel are for welding.

[0015] As can be seen from the above solutions, the advantages of this utility model are:

[0016] The V-shaped thrust rod of this utility model uses an externally convex stop and an internally concave stop to connect the first rod body and the second rod body together. On the one hand, it plays a self-positioning role, ensuring the concentricity of the first rod body and the second rod body, with high precision and good consistency. On the other hand, the use of the interlocking stop to replace the screw connection in the prior art reduces the weight of the overall structure.

[0017] The V-shaped thrust rod of this invention is welded through a first bevel and a second bevel, which solves the problem of relatively low connection rigidity caused by the possible loosening of bolts in screw connections.

[0018] In this invention, the first neck of the first connecting part and the second neck of the second connecting part are keyed together in the V-shaped thrust rod, so that the first connecting part and the second connecting part cannot rotate relative to each other around the axis of the seat hole, thereby improving the connection stability. Attached Figure Description

[0019] Figure 1A This is a first-view structural diagram of the rod forging of this utility model;

[0020] Figure 1B This is a second-view structural diagram of the rod forging of this utility model;

[0021] Figure 2A This is a cross-sectional view of the first rod of this utility model;

[0022] Figure 2B This is a bottom view of the first rod of this utility model;

[0023] Figure 2C This is a perspective view of the first rod of this utility model;

[0024] Figure 3A This is a cross-sectional view of the second rod of this utility model;

[0025] Figure 3B This is a bottom view of the second rod of this utility model;

[0026] Figure 3C This is a perspective view of the second rod of this utility model;

[0027] Figure 4 This is a structural diagram of the aluminum alloy V-shaped housing welding assembly of this utility model;

[0028] Figure 5 This is a structural diagram of the aluminum alloy V-shaped housing assembly of this utility model;

[0029] Figure 6 This is a cross-sectional view of the V-shaped thrust rod of this utility model;

[0030] Figure 7 This is a perspective view of the V-shaped thrust rod of this utility model;

[0031] In the attached figures, the following labels are used:

[0032] 1-V-type thrust rod;

[0033] 1a - First rod;

[0034] 10-First connecting part;

[0035] 100 - First end face;

[0036] 101 - Outwardly convex stop;

[0037] 102 - First through hole;

[0038] 103 - First neck;

[0039] 104 - Third end face;

[0040] 105 - First keyway;

[0041] 1b - Second rod;

[0042] 11-Second connecting part;

[0043] 110 - Second end face;

[0044] 111-Concave stop;

[0045] 112 - Second through hole;

[0046] 113 - Second neck;

[0047] 114 - Fourth end face;

[0048] 115 - Second keyway;

[0049] 12 - First bend;

[0050] 120 - First welding point;

[0051] 13-First annular groove;

[0052] 14-flat key;

[0053] 15 - Second bend;

[0054] 150 - Second welding point;

[0055] 16-First fixing part;

[0056] 160 - Third hole;

[0057] 17-Second fixing part;

[0058] 170 - Fourth hole;

[0059] 18 - Second annular groove;

[0060] 19-Middle connecting section;

[0061] 20-First snap ring;

[0062] 21-Second snap ring;

[0063] 30 - First Torque Core;

[0064] 31 - Second Torque Core.

[0065] L1 - First axis line;

[0066] L2 - Second axis;

[0067] L3 - Third axis. Detailed Implementation

[0068] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of this utility model, but it is not intended to limit the scope of protection of the appended claims of this utility model.

[0069] References to "embodiment," "another embodiment," "this embodiment," etc., in the specification refer to embodiments that may include specific features, structures, or characteristics, but not every embodiment must include these specific features, structures, or characteristics. Furthermore, such expressions do not refer to the same embodiment. Moreover, when describing specific features, structures, or characteristics in conjunction with embodiments, whether or not explicitly described, it is indicated that incorporating such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0070] The specification and subsequent claims use certain terms to refer to specific components or parts. Those skilled in the art will understand that users or manufacturers may use different names or terms to refer to the same component or part. This specification and claims do not distinguish components or parts by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout the specification and claims are open-ended and should be interpreted as "including but not limited to". Furthermore, the term "connection" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connections via other means.

[0071] It should be noted that in the description of this utility model, terms such as “inner,” “outer,” and “approximately” indicate the orientation or positional relationship or parameters based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, a specific size, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0072] One embodiment of this utility model provides a V-shaped thrust rod, which solves the problems of increased weight and low positioning accuracy caused by screw connections in the prior art.

[0073] The technical solution of this utility model aims to solve the above problems. The overall concept is as follows: The housing of the V-shaped thrust rod is made of aluminum alloy. A rod blank is made by forging. After machining, the blank is made into two different rod parts, namely the first rod and the second rod, each of which occupies half of the V-shaped thrust rod housing. Matching positioning stops and keyways are machined on the end faces of the two rod parts. The connecting parts of the two rods, namely the first connecting part and the second connecting part, are joined and welded. After welding, a solution aging treatment is performed to obtain an aluminum alloy V-shaped thrust rod housing. A torsion core is inserted into the mounting hole of the housing and fixed with a snap ring, thus completing the manufacturing of the aluminum alloy V-shaped thrust rod.

[0074] like Figures 1A to 7 As shown, where, Figure 6 This is a cross-sectional view of the V-shaped thrust rod 1 provided in this embodiment. Figure 7 This is a perspective view of the V-shaped thrust rod 1 provided in this embodiment. Figures 2A to 2C This is a structural diagram of the first rod 1a of the V-shaped thrust rod 1. Figures 3A to 3C This is a structural diagram of the second rod 1b of the V-shaped thrust rod 1.

[0075] The V-shaped thrust rod 1 includes a first rod 1a and a second rod 1b with different structures. One end of the first rod 1a is provided with a first connecting part 10, and one end of the second rod 1b is provided with a second connecting part 11. The first connecting part 10 and the second connecting part 11 are connected to make the first rod 1a and the second rod 1b form a V shape.

[0076] The first end face 100 of the first connecting portion 10 is provided with a convex stop 101; the second end face 110 of the second connecting portion 11 is provided with a concave stop 111. The convex stop 101 and the concave stop 111 are fitted together, and in the fitted position, the first end face 100 and the second end face 111 are in contact and coaxial. The cross-sectional profiles of the convex stop 101 and the concave stop 111 are circular, elliptical, or rounded polygons, such as rounded rectangles or rounded hexagons. In this embodiment, the cross-sectional profiles of the convex stop 101 and the concave stop 111 are circular.

[0077] In the existing technology, the screw connection of the V-type thrust rod relies on the friction force generated by the preload of the bolt to transmit the load. Under alternating loads, especially impact loads, the bolts may loosen, posing a risk of failure, and the connection stiffness is relatively low.

[0078] Therefore, in this embodiment, both the convex stop 101 and the concave stop 111 are provided with a first bevel 12 on their outer periphery. The first bevel 12 is, for example, a weld joint. After the convex stop 101 and the concave stop 111 are fitted together, welding is performed at the first bevel 12 to fix the first rod 1a and the second rod 1b. The first weld point 120 of the first bevel 12 is as follows: Figure 4 As shown. Preferably, the convex stop 101 is provided with a first thread 1010 (e.g., an external thread), and the concave stop 111 is provided with a second thread 1110 (e.g., an internal thread). When the convex stop 101 and the concave stop 111 are engaged, they are also threadedly connected by the first thread 1010 and the second thread 1110 to enhance stability. In other embodiments, the first bevel 12 is provided only on the outer periphery of the convex stop 101 or only on the outer periphery of the concave stop 111.

[0079] The first connecting part 10 is provided with a first through seat hole 102; the second connecting part 11 is provided with a second through seat hole 112. The inner diameters of the first through seat hole 102 and the second through seat hole 112 are the same. The convex stop 101 and the concave stop 111 are in the fitting position. The first through seat hole 102 and the second through seat hole 112 communicate to form a first mounting hole. The first mounting hole is used to accommodate the first torque core 30.

[0080] Specifically, a first annular groove 13 is provided on both sides of the first mounting hole (i.e., on both sides away from the connection between the first through seat hole 102 and the second through seat hole 112). Figure 5The first torque core 30 is fixed by the first snap ring 20.

[0081] To prevent the first connecting portion 10 and the second connecting portion 11 from rotating relative to the third axis L3 of the first mounting hole, the first neck 103 of the first connecting portion 10 and the second neck 113 of the second connecting portion 11 are keyed together. Examples of keyed connections include flat key connections, semi-circular key connections, and spline connections.

[0082] The first neck 103 includes a third end face 104 coplanar with the first end face 100, and the second neck 113 includes a fourth end face 114 coplanar with the second end face 111. Preferably, the third end face 104 is provided with a first keyway 105, and the fourth end face 114 is provided with a second keyway 115. The first keyway 105 is located on the first axis L1 of the first rod 1a, and the second keyway 115 is located on the second axis L2 of the second rod 1b. The first keyway 105 and the second keyway 115 are arranged opposite to each other and have the same dimensions. The interiors of the first keyway 105 and the second keyway 115 are rectangular spaces, connected by a flat key 14. When the first keyway 105 and the second keyway 115 are connected by the flat key 14, the third end face 104 and the fourth end face 114 are in contact and fit together.

[0083] To improve the stability of the V-shaped thrust rod 1, this embodiment provides second bevels 15 on the outer periphery of both the third end face 104 and the fourth end face 114. The second bevel 15 is, for example, a weld joint. After the convex stop 101 and the concave stop 111 are fitted together, welding is also performed at the second bevel 15. The second weld point 150 of the second bevel 15 is as follows: Figure 4 As shown. In other embodiments, the second bevel 15 is provided only on the outer periphery of the third end face 104 or only on the outer periphery of the fourth end face 114.

[0084] In other embodiments, the first bevel 12 and the second bevel 15 are, for example, a high-strength adhesive joint, a combination of a high-strength adhesive joint and a weld joint, or other types of connections.

[0085] It should be noted that, due to Figure 4 , Figure 5 and Figure 6 The diagram shows a partial cross-sectional view of the structure. The first welding point 120 and the second welding point 150 appear as a single point. In reality, these two welding points form a complete circle or approximately a complete circle. Specifically, the first welding point 120 is a circle along the outer side of the convex stop 101 and the concave stop 111, and the second welding point 150 is a circle along the outer side of the third end face 104 and the fourth end face 114.

[0086] The other end of the first rod 1a is the first fixing part 16, which has a third seat hole 160. The other end of the second rod 1b is the second fixing part 17, which has a fourth seat hole 170. Both the third seat hole 160 and the fourth seat hole 170 are stepped holes. The side with the larger diameter has a second annular groove 18. The second torque core 31 is fixed by the second snap ring 21.

[0087] The cross-section of the connecting section 19 between the first rod 1a and the second rod 1b is cross-shaped. The cross-shaped cross-section effectively increases the cross-sectional area of ​​the rod in the middle and causes the material to concentrate away from the neutral axis, thereby enhancing the tensile strength and bending strength of the rod.

[0088] The process of making V-shaped thrust rod 1 is as follows:

[0089] like Figure 1A and Figure 1B First, according to the design dimensions, rod forgings 1c for the first rod 1a and the second rod 1b need to be prepared. Rod forging 1c is made of aluminum alloy, and one rod forging 1c is approximately half the size of the V-shaped thrust rod 1. One end of rod forging 1c has a larger outer diameter and will be connected as a whole through fitting and welding in later processes. After welding, a seat hole for installing the first torque core 30 will be machined, which can be called the welded end. The other end has a smaller outer diameter, and a seat hole for installing the second torque core 31 will be machined in later processes, which can be called the fixed end. The cross-section of the middle connecting section 19 of rod forging 1c is cross-shaped.

[0090] like Figures 2A to 3C As shown, two rod forgings 1c are respectively machined into a first rod 1a and a second rod 1b. The first end face 100 of the first connecting portion 10 of the first rod 1a has an outwardly protruding stop 101, and the second end face 110 of the second connecting portion 11 of the second rod 1b has an inwardly recessed stop 111. A first keyway 105 and a second keyway 115 are respectively formed on the third end face 104 of the first connecting portion 10 and the fourth end face 114 of the second connecting portion 11, that is, both rods have keyways of the same size at the same position relative to the axis of the welding end seat hole. A first bevel 12 is machined around the outer side of the outwardly protruding stop 101 and the inwardly recessed stop 111.

[0091] The convex stop 101 of the first rod 1a and the concave stop 111 of the second rod 1b are fitted together to ensure that the first through seat hole 102 and the second through seat hole 112 at the welding end are coaxial. At this time, the first keyway 105 and the second keyway 115 are combined to form a keyway. A flat key 14 is placed in the key, and the flat key 14 fixes the position of the two rods (including the first rod 1a and the second rod 1b) so that they cannot rotate relative to each other around the third axis L3 of the first mounting hole.

[0092] The assembly of the first rod 1a and the second rod 1b is placed in a welding fixture, and welded around the first bevel 12 and the second bevel 15. After welding, the two rods are connected as a whole, which can be called an aluminum alloy V-shaped shell welded assembly. Figure 4 The aluminum alloy V-shaped housing welded assembly undergoes solution strengthening treatment.

[0093] The reinforced V-shaped housing welded assembly has welding and fixing holes machined on a machine tool, including a first through-hole 102, a second through-hole 112, a third hole 160, and a fourth hole 170. The finished product can be called an aluminum alloy V-shaped housing assembly. Figure 5 The welding end seat holes, namely the first through seat hole 102 and the second through seat hole 112, are through holes, each with a first annular groove 13 at both ends; the fixed end seat holes, namely the third seat hole 160 and the fourth seat hole 170, are stepped holes, with a second annular groove 18 on the side with the larger diameter.

[0094] The first torque core 30 is inserted into the welding end seat hole and fixed at both ends with the first retaining spring 20. The second torque core 31 is inserted into the fixing end seat hole and fixed with the second retaining spring 21. This completes the entire manufacturing process of the aluminum alloy V-shaped thrust rod 1 with a cross-section connecting rod. Figure 6 and Figure 7 .

[0095] The key points of this utility model are as follows: First, the rod body (including the first rod body 1a and the second rod body 1b) blank is formed by forging, and the middle connecting section 19 of the rod body has a cross-shaped cross section; after the material is forged by the mold, its internal structure is significantly refined and dense, and the material strength is significantly improved. The cross-shaped cross section effectively increases the cross-sectional area of ​​the middle part of the rod body and causes the material to concentrate in the direction away from the neutral axis, thereby enhancing the tensile strength and bending strength of the rod body; the density of aluminum alloy material is much lower than that of steel, so the increased volume does not bring a significant increase in weight. Therefore, the rod body formed by forging has both lightweight and high strength characteristics; Second, the rod body is formed by fitting and welding. The joint has both a circular stop for positioning and a flat key connection, which makes the connection reliable and stable. After welding, the weld strength can be greatly improved by solution aging strengthening treatment. Therefore, this utility model has both the lightweight characteristics of existing aluminum alloy V-type thrust rods and the stronger load-bearing capacity. It can be applied not only to high-speed logistics freight tractors, but also to other types of tractors, and even to engineering dump trucks such as urban construction waste trucks. This greatly expands the application range of aluminum alloy V-type thrust rods and is of great significance to the lightweight design of commercial vehicle suspension systems.

[0096] This invention employs a manufacturing method that involves split forging of the rod body followed by assembly welding, enabling the production of aluminum alloy V-shaped thrust rods. The forged rod body possesses excellent strength, solving not only the problem of the heavy weight of current steel V-shaped thrust rods, which prevents weight reduction, but also the issues of poor load-bearing capacity and narrow application range of existing aluminum alloy V-shaped thrust rods. It is a new type of aluminum alloy V-shaped thrust rod product with good lightweight effect and strong load-bearing capacity. The application of this product will greatly improve the performance of commercial vehicle suspension systems.

[0097] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms fall within the protection scope of the present invention.

Claims

1. A V-shaped thrust rod, comprising a first rod body and a second rod body, wherein one end of the first rod body is provided with a first connecting portion, and one end of the second rod body is provided with a second connecting portion, wherein the first connecting portion and the second connecting portion are connected to form a V-shape between the first rod body and the second rod body, characterized in that, The first end face of the first connecting part is provided with an outwardly protruding stop; The second end face of the second connecting part is provided with an inwardly recessed stop that fits into the outwardly protruding stop; When the convex stop and the concave stop are in the fitting position, the first end face and the second end face are in contact and coaxial.

2. The V-shaped thrust rod according to claim 1, characterized in that, The outer periphery of the convex stop and / or the concave stop is provided with a first bevel.

3. The V-shaped thrust rod according to claim 1, characterized in that, The cross-sections of the convex stop and the concave stop are circular, elliptical, or rounded polygonal.

4. The V-shaped thrust rod according to any one of claims 1 to 3, characterized in that, The first neck of the first connecting portion is key-connected to the second neck of the second connecting portion.

5. The V-shaped thrust rod according to claim 4, characterized in that, A first keyway is provided on the third end face of the first neck, and the first keyway is located on the first axis of the first rod. A second keyway is provided on the fourth end face of the second neck, and the second keyway is located on the second axis of the second rod. The first keyway and the second keyway are arranged opposite to each other.

6. The V-shaped thrust rod according to claim 5, characterized in that, The first keyway and the second keyway have the same size, and a flat key is provided in both the first keyway and the second keyway.

7. The V-shaped thrust rod according to claim 5, characterized in that, A second bevel is provided on the outer periphery of the third end face and / or the fourth end face.

8. The V-shaped thrust rod according to any one of claims 1 to 3, characterized in that, The first connecting part is provided with a first through seat hole for accommodating the first torque rubber core; the second connecting part is provided with a second through seat hole for accommodating the first torque rubber core.

9. The V-shaped thrust rod according to claim 8, characterized in that, The first through-hole and the second through-hole are provided with a first annular groove, and the first torque rubber core is fixed by a first snap ring.

10. The V-shaped thrust rod according to any one of claims 1 to 3, characterized in that, The first rod has a third seat hole at the other end, and the second rod has a fourth seat hole at the other end; the third seat hole and the fourth seat hole are stepped holes, and the second torque core is fixed by a second snap ring.

11. The V-shaped thrust rod according to claim 2, characterized in that, The first bevel is a weld joint.

12. The V-shaped thrust rod according to claim 7, characterized in that, The second bevel is a weld joint.

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