Long-life anti-friction automobile steel plate spring

Abstract

The utility model relates to the technical field of automobile accessories, and discloses a long-service-life anti-friction automobile steel plate spring which comprises a plurality of spring pieces, the middle ends of the spring pieces are connected through a positioning assembly, the left ends and the right ends of the spring pieces are connected through limiting assemblies, the outer walls of the spring pieces are fixedly connected with a plurality of ejector blocks, and the ejector blocks are fixedly connected with the outer walls of the spring pieces. The top block on the upper side is connected with the top block on the lower side through a plurality of locking assemblies, the left end and the right end of the spring piece on the upper side are fixedly connected with spring eyes, and each locking assembly comprises a connecting shaft located on the outer wall of the top block on the bottom side. According to the utility model, the upper side top block and the lower side top block are respectively clamped between the bolt and the spring pieces and between the connecting shaft and the spring pieces, so that the connection among the plurality of spring pieces is fixed, and the friction among the spring pieces is avoided; and meanwhile, positioning between the spring pieces can be achieved through matching between the positioning shafts and the positioning holes and matching between the limiting shafts and the limiting holes, and the spring pieces can be conveniently installed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a long-life anti-friction automobile leaf spring. Background Art

[0002] A leaf spring is one of the most widely used elastic elements in an automobile suspension. It is an approximately equal-strength elastic beam composed of several alloy spring leaves with the same width but different lengths (the thickness can be the same or different). Since the leaf spring is composed of several elastic alloy plates and has a strong load-bearing capacity, it is widely used in the suspension of load-carrying vehicles.

[0003] After retrieval, a kind of automobile leaf spring assembly with the publication number CN219774666U includes a leaf spring body. The leaf spring body includes several spring leaves and a center bolt. The several spring leaves are stacked in sequence and fixed by the center bolt. A plurality of limiting frames are sleeved at both ends of the leaf spring body. A plurality of limiting grooves are symmetrically opened on both sides of the side end of the leaf spring body. At both inner ends of the limiting frame, there are blocks adapted to the limiting grooves. A fastening bolt is threadedly connected to the top opening of the limiting frame. On the one hand, the utility model reduces the moving friction between the spring leaves through the limiting structure, and on the other hand, by injecting lubricating oil to increase the lubricity of the contact surface, the friction is reduced to achieve the purpose of long-term use.

[0004] Based on the above patent, the bending movement of the leaf spring mentioned in its background art will cause sliding friction between the two ends and the adjacent leaf surfaces. The mutual dislocation between two leaf springs will generate a large noise. The phenomenon of continuous friction will reduce the service life of the leaf spring and damage the paint surface of the leaf spring, resulting in oxidation and rusting. In view of this, aiming at this technical problem, the present application proposes a long-life anti-friction automobile leaf spring. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the disadvantages existing in the prior art, and a long-life anti-friction automobile leaf spring is proposed. The connection between multiple spring leaves is fixed by the upper top block and the lower top block respectively clamping between the bolt and the spring leaf and between the connecting shaft and the spring leaf, so as to avoid large displacement between the spring leaves, which may cause friction and affect the service life. At the same time, the positioning between the spring leaves can be realized through the cooperation between the positioning shaft and the positioning hole, and then the cooperation of the limiting shaft and the limiting hole, which is convenient for its installation.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A long-life anti-friction automotive leaf spring, comprising a plurality of spring leaves, the middle ends of the plurality of spring leaves are connected by a positioning assembly, and the left and right ends of the plurality of spring leaves are connected by a limiting assembly. A plurality of top blocks are fixedly connected to the outer walls of the plurality of spring leaves, and the upper top blocks are connected to the lower top blocks by a plurality of locking assemblies. The left and right ends of the upper spring leaves are fixedly connected with coil ears.

[0007] Further, the locking assembly includes a connecting shaft located on the outer wall of the bottom top block, and fixing plates are fixedly connected to both the front and rear ends of the connecting shaft.

[0008] Further, the closer sides of the two fixing plates are respectively arranged on the front and rear sides of the spring leaf, and bolt holes are opened at the tops of the two fixing plates.

[0009] Further, bolts are arranged inside the two bolt holes, nuts one are threadedly connected to the rear ends of the bolts, and the outer wall of the bottom side of the bolts is arranged on the outer wall of the top top block.

[0010] Further, the positioning assembly includes a positioning shaft located at the middle end of the bottom spring leaf, a positioning hole is provided at the middle end of the spring leaf, and the positioning shaft is arranged inside the positioning hole.

[0011] Further, the limiting assembly includes two limiting holes located on the outer wall of the spring leaf, limiting shafts are arranged inside the two limiting holes, clamping grooves are arranged at the bottom ends of the front limiting shaft and the top ends of the rear limiting shaft, and clamping shafts are fixedly connected to the top ends of the front limiting shaft and the bottom ends of the rear limiting shaft.

[0012] Further, the front clamping shaft and the rear clamping shaft are respectively arranged inside the rear clamping groove and the front clamping groove.

[0013] Further, nuts two are threadedly connected to the separated ends of the two clamping shafts.

[0014] The present utility model has the following beneficial effects:

[0015] 1. In the present utility model, by the upper top block and the lower top block being respectively clamped between the bolt and the spring leaf and between the connecting shaft and the spring leaf, and at the same time, in cooperation with the insertion between the limiting shaft and the limiting hole, and the fixation between the two limiting shafts, the connection between the plurality of spring leaves is fixed, preventing large displacements between the spring leaves from causing friction and affecting the service life.

[0016] 2. In the present utility model, through the cooperation between the positioning shaft and the positioning hole, and in combination with the limiting shaft and the limiting hole, and then through the cooperation of the clamping shaft and the clamping groove with nut two, the positioning between the spring pieces is realized, which is convenient for their installation, improves the installation efficiency of the spring pieces, and at the same time can avoid the misalignment of the installation of the spring pieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a perspective view of a long-life anti-friction automotive leaf spring proposed by the present utility model;

[0018] Figure 2 FIG. is a schematic structural view of a spring piece of a long-life anti-friction automotive leaf spring proposed by the present utility model;

[0019] Figure 3 FIG. is a schematic structural view of a limiting shaft of a long-life anti-friction automotive leaf spring proposed by the present utility model.

[0020] LEGEND DESCRIPTION:

[0021] 1. Spring piece; 2. Eyelet; 3. Fixed plate; 4. Top block; 5. Bolt; 6. Nut one; 7. Positioning hole; 8. Limiting hole; 9. Positioning shaft; 10. Bolt hole; 11. Connecting shaft; 12. Nut two; 13. Limiting shaft; 14. Clamping groove; 15. Clamping shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Referring to Figures 1 - 3 , an embodiment provided by the present utility model: a long-life anti-friction automotive leaf spring includes a plurality of spring pieces 1. The middle ends of the plurality of spring pieces 1 are connected by a positioning shaft 9. The left and right ends of the plurality of spring pieces 1 are connected by the insertion between a limiting shaft 13 and a limiting hole 8. A plurality of top blocks 4 are fixedly connected to the outer walls of the plurality of spring pieces 1. The upper top blocks 4 are connected to the lower top blocks 4 through a plurality of fixed plates 3 and a connecting shaft 11. The left and right ends of the upper spring piece 1 are fixedly connected with eyelets 2. The two adjacent sides of the two fixed plates 3 are respectively arranged on the front and rear sides of the spring piece 1. Bolts 5 are arranged at the tops of the two fixed plates 3. The outer wall of the bottom side of the bolt 5 is arranged on the outer wall of the top side top block 4;

[0024] Specifically, by sleeving multiple spring plates 1 on the outer wall of the positioning shaft 9 in sequence through the positioning shaft 9, and then realizing the positioning and installation between the installations of the multiple spring plates 1 through the insertion between the limiting shaft 13 and the limiting hole 8, it is convenient to improve the installation efficiency between the multiple spring plates 1, avoid misalignment in the connection between the multiple spring plates 1, cause displacement between the subsequent multiple spring plates 1 to cause friction, and thus cause wear of the spring plates 1. After the multiple spring plates 1 are installed and connected, the connection shaft 11 and the bolt 5 can be connected to the top block 4 respectively, and then with the cooperation of the fixing plate 3, a stable fixed connection relationship is formed between the multiple spring plates 1, avoiding large displacement between the multiple spring plates 1 to cause friction, and facilitating the improvement of the service life of the automotive leaf spring.

[0025] Referring to Figures 1 - 3 , the connection shaft 11 located on the outer wall of the bottom-side top block 4, both the front and rear ends of the connection shaft 11 are fixedly connected with fixing plates 3, the closer sides of the two fixing plates 3 are respectively arranged on the front and rear sides of the spring plate 1, bolt holes 10 are opened at the tops of the two fixing plates 3, bolts 5 are arranged inside the two bolt holes 10, a first nut 6 is threadedly connected to the rear end of the bolt 5, the bottom-side outer wall of the bolt 5 is arranged on the outer wall of the top-side top block 4, the positioning shaft 9 at the middle end of the bottom-side spring plate 1, a positioning hole 7 is arranged at the middle end of the spring plate 1, and the positioning shaft 9 is arranged inside the positioning hole 7. There are two limiting holes 8 on the outer wall of the spring plate 1, limiting shafts 13 are arranged inside the two limiting holes 8, clamping grooves 14 are arranged at the bottom end of the front-side limiting shaft 13 and the top end of the rear-side limiting shaft 13, clamping shafts 15 are fixedly connected to the top end of the front-side limiting shaft 13 and the bottom end of the rear-side limiting shaft 13, the front-side clamping shaft 15 and the rear-side clamping shaft 15 are respectively arranged inside the rear-side clamping groove 14 and the front-side clamping groove 14, and a second nut 12 is threadedly connected to the separated ends of the two clamping shafts 15;

[0026] Specifically, by the top blocks 4 on the upper and lower sides being respectively clamped between the bolt 5 and the connection shaft 11, and then by the two fixing plates 3 being clamped on the front and rear sides of the spring plate 1, the fixation between the multiple spring plates 1 is realized, avoiding displacement between the multiple spring plates 1 to cause friction. The positioning shaft 9 on the bottom-side spring plate 1 passes through the multiple spring plates 1 in sequence to position the multiple spring plates 1, and then through the insertion between the limiting shaft 13 and the limiting hole 8, the connection installation between the multiple spring plates 1 is fixed, which is convenient to improve the installation efficiency between the multiple spring plates 1. At the same time, misalignment in the connection between the multiple spring plates 1 can be avoided, causing misalignment during subsequent use and causing friction to affect the service life.

[0027] Working principle: The connection between multiple upper spring plates 1 is achieved by successively passing the multiple upper spring plates 1 through the positioning shaft 9. Then, the limiting shaft 13 is inserted into the interior of the limiting hole 8, and the limiting shaft 13 is rotated so that the two limiting shafts 13 are clamped together through the engagement between the clamping groove 14 and the clamping shaft 15. Then, the two limiting shafts 13 are fixed by the second nut 12. Further, the connection shaft 11 and the bolt 5 cooperate to clamp between the top block 4 and the spring plate 1, so as to fix the multiple spring plates 1 together, and prevent displacement between the multiple spring plates 1 from causing friction and affecting the service life of the automotive leaf spring.

[0028] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A long-life anti-friction automobile leaf spring, comprising a plurality of spring leaves (1), characterized in that: The middle ends of the plurality of spring sheets (1) are connected via a positioning assembly, the left and right ends of the plurality of spring sheets (1) are connected via a limit assembly, the outer walls of the plurality of spring sheets (1) are fixedly connected with a plurality of top blocks (4), the upper top block (4) is connected to the lower top block (4) via a plurality of locking assemblies, and the left and right ends of the upper spring sheet (1) are fixedly connected with a coil ear (2).

2. The long-life anti-friction automobile leaf spring according to claim 1, characterized in that: The locking assembly comprises a connecting shaft (11) located on the outer wall of the top block (4) at the bottom side, and the front and rear ends of the connecting shaft (11) are fixedly connected to a fixing plate (3).

3. The long-life anti-friction automobile leaf spring according to claim 2, characterized in that: The adjacent sides of the two fixing plates (3) are respectively arranged on the front and rear sides of the spring sheet (1), and the top ends of the two fixing plates (3) are provided with bolt holes (10).

4. The long-life anti-friction automobile leaf spring according to claim 3, characterized in that: Bolts (5) are arranged inside the two bolt holes (10), and a nut (6) is threadedly connected to the rear end of the bolt (5), and the outer wall of the bottom side of the bolt (5) is arranged on the outer wall of the top block (4) on the top side.

5. The long-life anti-friction automobile leaf spring according to claim 1, characterized in that: The positioning assembly comprises a positioning shaft (9) located at the middle end of the spring sheet (1) at the bottom side, a positioning hole (7) is provided at the middle end of the spring sheet (1), and the positioning shaft (9) is arranged inside the positioning hole (7).

6. The long-life anti-friction automobile leaf spring according to claim 1, characterized in that: The limiting assembly comprises two limiting holes (8) located on the outer wall of the spring sheet (1), a limiting shaft (13) is arranged inside the two limiting holes (8), a clamping groove (14) is arranged at the bottom end of the front limiting shaft (13) and the top end of the rear limiting shaft (13), and a clamping shaft (15) is fixedly connected to the top end of the front limiting shaft (13) and the bottom end of the rear limiting shaft (13).

7. The long-life anti-friction automobile leaf spring according to claim 6, characterized in that: The front clamping shaft (15) and the rear clamping shaft (15) are respectively arranged inside the rear clamping groove (14) and the front clamping groove (14).

8. The long-life anti-friction automobile leaf spring according to claim 6, characterized in that: The two ends of the two clamping shafts (15) separated from each other are both threadedly connected with nuts (12).

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