Rear swing lug assembly of automobile steel plate spring suspension
Through the steel plate integral stamping and casing bushing structure, the rear swing ear assembly of the rear swing ear assembly in the prior art is solved, and the rear swing ear assembly with simplified installation, high strength and good shock absorption and sound silence effect is achieved.
Patent Information
- Application Number
- CN202420110208.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-16
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-01-16
AI Technical Summary
The existing automotive steel sheet spring suspension rear swing ear assembly has a complex structure, a long installation time, uneven mechanical properties, prone to stress concentration and fatigue fracture, and lacks shock absorption and sound silence functions.
The rear swing ear bracket is made of a steel plate integrally stamped with a sleeve and a bushing. The bushing is sequentially from the outside to the inside. It is connected by vulcanization. The bushing has a "T" cross-section and a disc-shaped flip. It can absorb vibration and isolate noise through twisting, extrusion and deflection of the rubber body during use.
It realizes a rear swing ear assembly for automotive steel sheet spring suspension with simple structure, convenient installation, good shock absorption and sound silence, and has high strength and strong versatility.
Smart Images
Figure CN222554678U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a rear swing ear assembly of an automobile leaf spring suspension, and belongs to the technical field of automobile parts equipment. Background Art
[0002] The rear swing ear assembly of the automobile leaf spring suspension is the connecting part between the automobile leaf spring and the frame. The rear swing ear assembly, the leaf spring and the frame are rotating pairs, which bear and transmit the force and torque from the leaf spring, and satisfy the movement trajectory of the leaf spring through its own rotation and swing. At present, the rear swing ear assembly of the automobile leaf spring suspension generally uses three types: connecting plate structure rear swing ear, plate welding structure rear swing ear, and casting structure rear swing ear. Figure 1 : Its structure is complex, requiring a connecting plate bracket 1-1 and two leaf spring connecting plates 1-2. When in use, each component needs to be assembled one by one, which requires a lot of installation time and low efficiency; the rear swing ear of the plate welding structure is combined Figure 2 : Two leaf spring connecting plates 1-2 are welded to the connecting plate bracket 1-1. The uneven organization of this structure at the welding position is likely to cause uneven mechanical properties, stress concentration, and fatigue fracture; the rear swing ear of the casting structure - combined Figure 3 :The structure of the swing ear of the casting structure is similar to that of the plate welding structure, but the volume and weight of the connecting plate bracket 1-1 and the two leaf spring connecting plates 1-2 are obviously large, which is not conducive to lightweighting. In addition, the above three existing structures do not have rubber bushings, which obviously cannot deform and absorb energy, and cannot play the role of buffering, shock absorption, noise reduction and silencing. The utility model provides a rear swing ear assembly of an automobile leaf spring suspension - combined with Figure 4-Figure 9 :It is made of steel plate by integral stamping and is equipped with sleeves and bushings. It has the advantages of high strength, easy installation and good shock absorption and noise reduction effects. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and, on the basis of fully considering the purpose of use of the structure, provide a rear swing ear assembly of an automobile leaf spring suspension for bearing and connection, which has a simple structure, low cost, easy use and installation, and shock-absorbing and noise-reducing effects.
[0004] In order to solve the above technical problems, the utility model provides a rear swing ear assembly of a leaf spring suspension for an automobile, wherein the automobile has a frame, the leaf spring suspension has a leaf spring, and the rear swing ear assembly connects the frame and the leaf spring, and is characterized in that: the rear swing ear assembly comprises a rear swing ear bracket, a sleeve, two bushings and a plurality of bolts, the rear swing ear bracket is concave in cross section, and is composed of a left plate body and a right plate body relative to each other, and a back plate connecting the long sides of the left and right plate bodies, and a connecting hole for connecting the leaf spring is respectively provided on one side of the left and right plate bodies, Through holes for supporting the left and right ends of the plug-in sleeve are respectively provided on the other side of the left and right plate bodies, and the through holes are matched with the left and right ends of the outer wall of the sleeve to minimize the clearance and are welded at the matching positions so that the sleeve is installed on the rear swing ear bracket; the sleeve is a circular tube, and during assembly, the open ends on both sides of the sleeve remain flush with the outer side surfaces of the corresponding left and right folding plates, and the two bushings are matched on the left and right inner sides of the sleeve; one side of the rear swing ear bracket assembly is connected to the leaf spring by bolts through two connecting holes, and the other side of the rear swing ear bracket assembly is connected to the frame by bolts through two bushings.
[0005] Furthermore, each through hole has a tubular flange extending from its periphery toward the inner side of the rear swing ear bracket, and the tubular flange is welded to the outer wall of the sleeve to maximize contact.
[0006] Furthermore, the two bushings are of the same hollow tubular structure, and each bushing is composed of an outer sleeve, a rubber body and an inner sleeve from the outside to the inside, and the rubber body is vulcanized correspondingly to the inner and outer sleeves; the cross-section of the bushing is "T"-shaped, and the lateral ends of the "T"-shaped bushing are respectively formed by the outer sleeve end and the rubber body end on the same side, which are circumferentially extended to form a disc-shaped flip surface. During use, the inner side surface of the disc-shaped flip surface is ensured to fit with the outer side surfaces of the corresponding left and right folding plates. The longitudinal end of the "T"-shaped bushing is completely located in the sleeve, and the torsion, extrusion and yaw deformation of the rubber body are used to absorb vibration and isolate noise during use.
[0007] Furthermore, the two sides of the back plate are transitioned with an arc surface at the junction with the long sides of the left and right plates, and a number of reinforcing ribs are arranged at intervals on the junctions of the long sides of the left and right plates with the two sides of the back plate, and the reinforcing ribs are composed of arc-shaped protrusions and are integrally formed with the adjacent areas; a bevel is added to the end of the long sides of the left and right plates on the same side as the two connecting holes, and the bevel is an obtuse-angled edge, which avoids damage to the human body or other parts during transportation, assembly and use by the right-angled edge; the bevel is conducive to the stress release of the material and reduces deformation; the end of the long sides of the left and right plates on the same side as the two through holes is provided with an arc end, and the arc end matches the sleeve beautifully, avoiding damage to the human body or other parts during transportation, assembly and use, and is conducive to releasing material stress, avoiding stress concentration, and saving materials.
[0008] Furthermore, two outer sides of the back plate are cut off in parallel to the outer sides to generate a rectangular weight reduction area, and a middle position of the back plate is cut off in a rectangular shape to generate a rectangular weight reduction area.
[0009] Furthermore, the rear swing ear bracket is made of rigid material and is made by integrally stamping a thin steel plate.
[0010] Furthermore, the outer sleeve and the inner sleeve of the sleeve and the bushing are both made of rigid material.
[0011] The beneficial effects of the utility model are as follows: one side of the structure uses bushings with rubber bodies at both ends, and is connected to the frame through bolts in the two bushings, and the two connecting holes on the other side are connected to the leaf springs through bolts, and each connecting part has a rotating motion pair, which is also suitable for connecting different leaf springs with the frame. Obviously, the installation is simple and convenient, and the versatility is strong; and the utility model also embodies a simple structure, light weight and high strength. After that, when the swing ear assembly is in use, the two bushings with rubber bodies are squeezed and deformed to absorb energy, which plays a role in buffering, shock absorption and noise reduction; at the same time, it can ensure the reasonable installation position of the automobile leaf spring suspension and the frame. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the rear swing ear of the connecting plate structure in the prior art.
[0013] Figure 2 It is a schematic diagram of the rear swing ear of the plate welding structure in the prior art.
[0014] Figure 3 It is a schematic diagram of the rear swing ear of the casting structure in the prior art.
[0015] Figure 4 This is a schematic diagram of the structure of the utility model.
[0016] Figure 5 It is a schematic diagram of the structure of the rear swing ear bracket of the utility model.
[0017] Figure 6 This is a schematic diagram of the casing structure of the utility model.
[0018] Figure 7 This is a schematic diagram of the bushing structure of the utility model.
[0019] Figure 8 It is a cross-sectional schematic diagram of the bushing of the utility model.
[0020] Fig. 9 This is a schematic diagram of the assembly of the utility model.
[0021] Explanation of the drawings: A-frame, B-leaf spring, C-rear swing ear assembly, 1-1-connecting plate bracket, 1-2-leaf spring connecting plate, 1-rear swing ear bracket, 11-left plate body or right plate body, 12-back plate, 13-connecting hole, 14-through hole, 15-tubular flange, 16-arc end, 17-bevel, 18-reinforcement rib, 19-rectangular weight reduction area, 2-sleeve, 3-bushing, 31-outer sleeve, 32-rubber body, 33-inner sleeve, 34-disc-shaped flip-over. DETAILED DESCRIPTION
[0022] This embodiment provides a rear swing ear assembly of a leaf spring suspension for an automobile, the structure of which is as follows: Figure 4-Figure 9 As shown, the vehicle has a frame A, a rear swing ear assembly C connecting the frame A and the leaf spring B, and a Figure 4 , Figure 5 , Figure 6 , Figure 7 The rear swing ear assembly C includes a rear swing ear bracket 1, a sleeve 2, two bushings 3 and a plurality of bolts. The rear swing ear bracket 1 is concave in cross section, and is composed of a left plate 11, a right plate 11 and a back plate 12 connecting the two long sides of the left and right plates. The left and right plates are respectively provided with a connecting hole 13 for connecting the leaf spring B on one side, and the left and right plates are respectively provided with a through hole 14 on the other side for supporting the left and right ends of the plug-in sleeve 2. The through hole 14 is matched with the left and right ends of the outer wall of the sleeve to minimize the clearance and is welded at the matching position so that the sleeve 2 is installed on the rear swing ear bracket 1, wherein each through hole 14 extends a tubular flange 15 with its periphery toward the inner side of the rear swing ear bracket 1, and the tubular flange 15 is welded to the outer wall of the sleeve 2 to maximize the contact. In this embodiment, combined with Figure 5 and Figure 8 : The sleeve 2 is a round tube. During assembly, the open ends of the sleeve 2 on both sides are kept flush with the corresponding left and right outer sides of the folded plates. The two bushings 3 are assembled on the left and right inner sides of the sleeve 2; combined Fig. 9 : One side of the rear swing ear bracket assembly C is connected to the leaf spring B by bolts through two connecting holes 13, and the other side of the rear swing ear bracket assembly C is connected to the frame A by bolts through two bushings 3.
[0023] In this embodiment, the Figure 6 , Figure 7 and Figure 8: The two bushings 3 are of the same hollow tubular structure, and each bushing 3 is composed of an outer sleeve 31, a rubber body 32 and an inner sleeve 33 from the outside to the inside, and the rubber body is vulcanized and connected to the inner and outer sleeves accordingly; the cross-section of the bushing is "T"-shaped, and the lateral ends of the "T"-shaped bushing are respectively formed by the ends of the outer sleeve 31 and the rubber body 32 on the same side, which are circumferentially extended to form a disc-shaped flip surface 34. During use, ensure that the inner side surface of the disc-shaped flip surface 34 is in contact with the outer side surfaces of the corresponding left and right folding plates. The longitudinal end of the "T"-shaped bushing is located in the sleeve 2. When in use, the torsion, extrusion and yaw deformation of the rubber body are used to absorb vibration and isolate noise.
[0024] Further, combined with Figure 4 , 8 : The two sides of the back plate 12 are transitioned with arc surfaces at the junctions with the long sides of the left and right plates. The long sides of the left and right plates are respectively provided with a plurality of reinforcing ribs 18 at intervals at the junctions with the two sides of the back plate 12. The reinforcing ribs 18 are composed of arc-shaped protrusions and are formed integrally with the adjacent areas. A bevel 17 is added to the ends of the long sides of the left and right plates on the same side as the two connecting holes 13. The bevel 17 is an obtuse edge, which prevents the right-angled edge from causing damage to the person or other parts during transportation, assembly and use. The bevel is conducive to the stress release of the material and reduces deformation. The ends of the long sides of the left and right plates on the same side as the two through holes 14 are provided with arc ends. The arc ends 16 match the sleeve 2 beautifully, avoid damage to the person or other parts during transportation, assembly and use, and are conducive to releasing material stress to avoid stress concentration and save materials. However, in order to better reduce weight, the two outer sides of the back plate 12 are cut parallel to the outer sides to generate a rectangular weight reduction area 19, and the middle position of the back plate 12 is cut rectangular to generate a rectangular weight reduction area 19.
[0025] In addition, in the above implementation, the rear swing ear bracket 1 is preferably made of rigid material, which is stamped from a thin steel plate as a whole; and the outer sleeve 31 and the inner sleeve 33 of the sleeve 2 and the bushing 3 are both made of rigid material, so as to increase the strength of the rear swing ear assembly C.
[0026] Compared with existing technology Figure 1-Figure 3 The structure of the utility model is very different, and it is designed based on making full use of material properties and deeply optimizing the structure, making the design more reasonable, and ultimately having the advantages of light weight, high strength and practicality. The utility model fully considers the purpose of the rear swing ear assembly, supports mass and limits displacement, and is used for bearing and vibration reduction at the same time, and also increases the flexibility of the connection; it can also better ensure that the requirements of convenient and fast assembly, safety and reliability are met. According to the needs of the structural layout or the performance of the whole vehicle, it can be combined with Fig. 9 The concave opening shown can be used on the top, and the concave opening can also be used on the bottom; it can be used with both a few-piece leaf spring and a multi-piece leaf spring.
[0027] In addition to the above embodiments, the utility model may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.
Claims
1. A rear swing ear assembly of a leaf spring suspension for an automobile, wherein the automobile has a frame, the leaf spring suspension has a leaf spring, and the rear swing ear assembly connects the frame and the leaf spring, characterized in that: The rear swing ear assembly includes a rear swing ear bracket, a sleeve, two bushings and a plurality of bolts. The rear swing ear bracket has a concave cross-section, and is composed of a left plate body, a right plate body relative to each other, and a back plate connecting the long sides of the left and right plate bodies. The left and right plate bodies respectively have connecting holes for connecting leaf springs on one side, and the left and right plate bodies respectively have through holes on the other side for bearing the left and right ends of the plug-in sleeve. The through holes are matched with the left and right ends of the outer wall of the sleeve to minimize the clearance and are welded at the matching positions so that the sleeve is installed on the rear swing ear bracket; the sleeve is a circular tube, and during assembly, the open ends on both sides of the sleeve remain flush with the corresponding outer sides of the left and right folding plates, and the two bushings are matched with the left and right inner sides of the sleeve; one side of the rear swing ear bracket assembly is connected to the leaf spring by bolts through the two connecting holes, and the other side of the rear swing ear bracket assembly is connected to the frame by bolts through the two bushings.
2. The rear swing ear assembly of an automobile leaf spring suspension according to claim 1, characterized in that: Each through hole has a tubular flange correspondingly extending from its periphery toward the inner side of the rear swing ear bracket, and the tubular flange is welded to the outer side wall of the sleeve in a maximized contact.
3. The rear swing ear assembly of an automobile leaf spring suspension according to claim 1, characterized in that: The two bushings are of the same hollow tubular structure, and each bushing is composed of an outer sleeve, a rubber body and an inner sleeve from the outside to the inside, and the rubber body is vulcanized and connected to the inner and outer sleeves accordingly; the cross-section of the bushing is "T"-shaped, and the lateral ends of the "T"-shaped bushing are respectively formed by the outer sleeve end and the rubber body end on the same side, which are circumferentially extended outward to form a disc-shaped flip surface. During use, ensure that the inner side surface of the disc-shaped flip surface is in contact with the outer side surfaces of the corresponding left and right folding plates, and the longitudinal end of the "T"-shaped bushing is completely located in the sleeve.
4. The rear swing ear assembly of an automobile leaf spring suspension according to claim 1, characterized in that: The two sides of the back plate are transitioned with an arc surface at the intersection with the long sides of the left and right plates. A number of reinforcing ribs are arranged at intervals on the intersections of the long sides of the left and right plates with the two sides of the back plate. The reinforcing ribs are composed of arc-shaped protrusions and are integrally formed with the adjacent areas; a bevel is added to the end of the long side of the left and right plates on the same side as the two connecting holes; and an arc-shaped end is set at the end of the long side of the left and right plates on the same side as the two through holes.
5. The rear swing ear assembly of an automobile leaf spring suspension according to claim 1, characterized in that: The two outer sides of the back plate are cut off in parallel to the outer sides to generate a rectangular weight reduction area, and the middle position of the back plate is cut off in a rectangular shape to generate a rectangular weight reduction area.
6. The rear swing ear assembly of an automobile leaf spring suspension according to claim 1, characterized in that: The rear swing ear bracket is made of rigid material and is formed by integrally stamping a thin steel plate.
7. The rear swing ear assembly of an automobile leaf spring suspension according to claim 1, characterized in that: The outer sleeve and the inner sleeve of the sleeve and the bushing are both made of rigid material.