CN219299839U - Modularized leaf spring assembly - Google Patents

Abstract

The utility model discloses a modularized leaf spring assembly, which belongs to the field of parts of heavy-duty automobiles and comprises a first leaf spring and a second leaf spring, wherein the front section and the rear section of the first leaf spring and the second leaf spring are both S-shaped; the front section is arranged at one side of the first leaf spring and the second leaf spring, which is close to the lug; one side of the first leaf spring and the second leaf spring, which is far away from the lug, is a rear section; the S-shaped radians of the front sections of the first leaf spring and the second leaf spring are respectively larger than the S-shaped radians of the rear sections of the first leaf spring and the second leaf spring; the center of a circle of rotation that leaf spring S warp when can guaranteeing to brake coincides with the ball pivot center that steering column and knuckle arm are connected to optimize braking off tracking, there is great difference in height in first leaf spring, second leaf spring anterior segment simultaneously, thereby use two thickness 100 mm' S ductile iron spring holder less when guaranteeing higher suspension height, reach the purpose of reducing the weight indirectly, whole weight reduction is more obvious.

Description

Modularized leaf spring assembly

Technical Field

The utility model belongs to the field of parts of heavy-duty automobiles, and particularly relates to a modularized leaf spring assembly.

Background

The section of the leaf spring is long circular arc steel spring. In the most common configuration, the center of the arc provides the location of the axle, while the loops formed at either end are attached to the vehicle chassis. For very heavy vehicles, leaf springs may be made from a plurality of blades stacked together; when the leaf spring is installed in the automobile suspension and the vertical load is positive, each spring piece is stressed to deform and tends to arch upwards. At this time, the axle and the frame are brought close to each other. When the axle and frame are moved away from each other, the normal vertical load and deformation to which the leaf spring is subjected is gradually reduced, sometimes even reversed.

As the maturity of leaf spring assemblies increases and market demands are increasing, the demands of the market for leaf springs are increasing, and further demands are being made on leaf spring suspension performance, weight reduction, modularity and the like. Leaf springs have great potential in improving overall vehicle performance, weight reduction and modularity as the primary load bearing and resilient elements of the suspension.

The current suspension has the defects of more parts, heavy weight and scattered arrangement positions, the fuel consumption of the whole vehicle is increased due to the heavy weight of the whole vehicle, and the loading efficiency is low due to the scattered parts; when a vehicle is braked, the braking deviation can be caused by inaccurate arrangement of the deformed and rotated circle center positions of the plate springs S; meanwhile, when the vehicle is maintained after sale, the last root of the top plate spring of the jack can be used due to inconvenient maintenance, so that the abrasion of the plate spring is increased, and the service life of the plate spring is influenced. In summary, the existing leaf spring type suspension has the problems of heavy weight, low modularization degree, inconvenient maintenance, braking deviation and the like.

Disclosure of Invention

The utility model provides a modularized leaf spring assembly, which aims to solve the problems of heavy weight, scattered parts and deviation of suspension braking of the existing leaf spring assembly.

The technical scheme adopted for solving the technical problems is as follows: a modularized leaf spring assembly comprises a first leaf spring and a second leaf spring, wherein the front section and the rear section of the first leaf spring and the second leaf spring are both S-shaped; the front section is arranged at one side of the first leaf spring and the second leaf spring, which is close to the lug; one side of the first leaf spring and the second leaf spring, which is far away from the lug, is a rear section; the S-shaped radians of the front sections of the first leaf spring and the second leaf spring are respectively larger than the S-shaped radians of the rear sections of the first leaf spring and the second leaf spring; the center of a circle of rotation that leaf spring S warp when can guaranteeing to brake coincides with the ball pivot center that steering column and knuckle arm are connected to optimize braking off tracking, there is great difference in height in first leaf spring, second leaf spring anterior segment simultaneously, thereby use two thickness 100 mm' S ductile iron spring holder less when guaranteeing higher suspension height, reach the purpose of reducing the weight indirectly, whole weight reduction is more obvious.

As a further improvement of the technical scheme, the spring leaf spring further comprises a rolling lug bushing, wherein the rolling lug bushing is pressed into the wrapping lug of the first leaf spring through interference fit; the ear-rolling bush is a steel pipe, and an elastic layer is arranged on the surface of the steel pipe. The plate spring assembly and the frame are in flexible connection, so that the comfort of the suspension is ensured, and the purpose of noise reduction is achieved.

As a further improvement of the technical scheme, the device further comprises an end rubber gasket, wherein the upper end and the lower end of the end rubber gasket are respectively in interference connection with the first leaf spring and the second leaf spring; metal pins are arranged on two sides of the end rubber gasket; wherein the end rubber gasket is formed by vulcanizing a 2mm steel plate and rubber; the abrasion between the plate reeds can be reduced, and meanwhile, the metal pin can prevent the plate spring from greatly moving forwards and backwards and from shifting left and right in a staggered manner.

As a further improvement of the technical scheme, the locking device further comprises a limiting block, and the limiting block is arranged on the first leaf spring through a locking mechanism. The locking mechanism comprises a center bolt and a center nut; the center bolt passes through the second leaf spring and the first leaf spring and fixes the limiting block on the first leaf spring through the center nut. The steel tube of the limiting block is vulcanized with rubber; the limiting block can play a role in limiting the larger dynamic deflection of the plate spring, the plate spring is prevented from being broken due to the fact that the plate spring exceeds limit stress caused by overlarge dynamic deflection, meanwhile, the limiting block is separated from the plate spring in advance, modularization integration is carried out, and the loading efficiency of the whole vehicle can be improved.

As a further improvement of the above technical solution, the device further comprises a damper lower bracket, wherein the damper lower bracket is arranged at the lower part of the limiting block, and the lower mounting point of the damper lower bracket is positioned on the first leaf spring; the lower mounting point of the shock absorber lower support is integrated with the plate spring in a modularized mode, and the shock absorber lower support is split-assembled with the plate spring in advance, so that the loading efficiency of the whole vehicle can be improved.

As a further improvement of the above technical solution, the device further comprises an intermediate pad, wherein the intermediate pad is installed between the first leaf spring and the second leaf spring; the jack cushion also comprises a jack cushion piece which is arranged on the second leaf spring, and a round hole is arranged on the bottom surface of the jack cushion piece. The round hole on the bottom surface of the jack gasket can provide the jack placement position to prevent the aggravation of the abrasion of the plate spring.

From the technical scheme, the beneficial effects of the utility model are as follows:

the back sections of the first leaf spring and the second leaf spring are designed into small S shapes, and the front sections are designed into large S shapes. The center of a circle of rotation that leaf spring S warp when can guaranteeing to brake coincides with the ball pivot center that steering column and knuckle arm are connected to optimize braking off tracking, there is great difference in height in first leaf spring, second leaf spring anterior segment (taking the ear side to be the anterior segment) simultaneously, thereby use two ball iron spring seats of thickness about 100mm less when guaranteeing higher suspension height, reach the purpose of falling heavy indirectly, and the leaf spring itself is the leaf spring, whole falling heavy is more obvious.

And (5) winding the lug bush. The plate spring and the frame are in soft connection, so that the comfort of the suspension is ensured, and the purpose of noise reduction is achieved.

An end rubber gasket. The metal pins are arranged on two sides and are in interference connection with the first leaf spring and the second leaf spring, so that abrasion between the leaf springs can be reduced, and meanwhile, the metal pins can prevent the leaf springs from larger front and back movement and left and right misplacement.

And integrating a limiting block. The limiting block can play a role in limiting the larger dynamic deflection of the plate spring, the plate spring is prevented from being broken due to the fact that the plate spring exceeds limit stress caused by overlarge dynamic deflection, meanwhile, the limiting block is separated from the plate spring in advance, modularization integration is carried out, and the loading efficiency of the whole vehicle can be improved.

And an integrated shock absorber lower bracket. The lower mounting point of the shock absorber is integrated with the plate spring in a modularized mode, and the shock absorber is split-assembled with the plate spring in advance, so that the loading efficiency of the whole vehicle can be improved.

And (5) designing a jack fulcrum. The bottom surface of the jack gasket is provided with a round hole, which can provide a jack placement position to prevent the abrasion of the plate spring from being aggravated.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a side view of the structure of the present utility model.

Fig. 2 is a cross-sectional view of the present utility model.

Fig. 3 is a top view of the present utility model.

The marks in the figure: 1. a first leaf spring; 2. a second leaf spring; 3. a ear-rolling bush; 4. an end rubber gasket; 5. a limiting block; 6. a lower bracket of the shock absorber; 7. an intermediate gasket; 8. jack pads; 9. a center bolt; 10. a center nut; 11. a metal pin; 12. ear-covering.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

Referring to fig. 1-3, the present utility model provides a modular leaf spring assembly (a double S-shaped modular variable cross-section two leaf spring assembly) comprising a first leaf spring 1 and a second leaf spring 2; the front section and the rear section of the first leaf spring 1 and the second leaf spring 2 are S-shaped; the side of the first leaf spring 1 and the second leaf spring 2, which is close to the ear, is a front section; the side of the first leaf spring 1 and the second leaf spring 2, which is far away from the ear, is a rear section; the S-shaped radians of the front sections of the first leaf spring 1 and the second leaf spring 2 are respectively larger than the S-shaped radians of the rear sections of the first leaf spring and the second leaf spring, so that the rotation circle center of the deformation of the leaf spring S and the center of the spherical hinge connected with the steering longitudinal pull rod and the steering knuckle arm are overlapped during braking, braking deviation is optimized, meanwhile, the front sections (the lug-covered side is the front section) of the first leaf spring 1 and the second leaf spring 2 have larger height difference, and therefore the purpose of weight reduction is indirectly achieved by using two spherical iron spring seats with the thickness of about 100mm while the height of a higher suspension is guaranteed, and the whole weight reduction of the scheme plate spring is obvious because the plate spring is a 2 leaf spring (the first leaf spring 1 and the second leaf spring 2).

The spring leaf spring also comprises a rolling lug bush 3, wherein the rolling lug bush 3 is pressed into the packing lug 12 of the first leaf spring 1 through interference fit; the ear-rolling bush 3 is a steel pipe, and the surface of the steel pipe is provided with an elastic layer. The plate spring assembly and the frame are in flexible connection, so that the comfort of the suspension is ensured, and the purpose of noise reduction is achieved.

The device further comprises an end rubber gasket 4, wherein the upper end and the lower end of the end rubber gasket 4 are respectively in interference connection with the first leaf spring 1 and the second leaf spring 2; metal pins 11 are arranged on two sides of the end rubber gasket 4; wherein the end rubber gasket 4 is formed by vulcanizing a 2mm steel plate and rubber; the abrasion between the plate reeds can be reduced, and meanwhile, the metal pin can prevent the plate spring from greatly moving forwards and backwards and from shifting left and right in a staggered manner.

The device further comprises a limiting block 5, and the limiting block 5 is arranged on the first leaf spring 1 through a locking mechanism. The locking mechanism comprises a center bolt 9 and a center nut 10; the center bolt 9 passes through the second leaf spring 2 and the first leaf spring 1 and fixes the stopper 5 to the first leaf spring 1 by the center nut 10. The steel tube of the limiting block is vulcanized with rubber; the steel pipe is mainly used for facilitating the screwing of nuts; the limiting block 5 can play a role in limiting the larger dynamic deflection of the plate spring, so that the plate spring is prevented from being broken due to the fact that the plate spring exceeds the limit stress caused by the overlarge dynamic deflection, meanwhile, the limiting block 5 is separated from the plate spring in advance, modularization integration is carried out, and the loading efficiency of the whole vehicle can be improved.

Still include shock absorber lower carriage 6, shock absorber lower carriage 6 sets up in the lower part of stopper 5 and shock absorber lower carriage 6's lower mounting point is located first leaf spring 1. In this scheme, the shock absorber lower carriage is 8mm sheet metal component, with shock absorber lower carriage 6's lower mounting point and leaf spring modularization integrated, in advance with the leaf spring partial shipment, can improve whole car loading efficiency.

The middle gasket 7 is arranged between the first leaf spring 1 and the second leaf spring 2; the jack cushion also comprises a jack cushion 8, wherein the jack cushion 8 is arranged on the second leaf spring 2, and a round hole is arranged on the bottom surface of the jack cushion 8. The middle pad 7 and the jack pad 8 are 2mm sheet metal parts, and the jack pad 8 is an arc bending part; the round hole on the bottom surface of the jack gasket 8 can provide a jack placement position to prevent the plate spring from being worn.

As can be seen from the above, the rear sections of the first leaf spring 1 and the second leaf spring 2 are designed into small S shapes, and the front sections are designed into large S shapes. The center of a circle of rotation that leaf spring S warp when can guaranteeing to brake coincides with the ball pivot center that steering column and knuckle arm are connected to optimize braking off tracking, there is great difference in height in first leaf spring 1, second leaf spring 2 anterior segment (taking the package ear side to be the anterior segment) simultaneously, thereby use two ball iron spring bases of thickness about 100mm less when guaranteeing higher suspension height, reach the purpose of falling heavy indirectly, and the leaf spring itself is 2 leaf springs, whole falling heavy is more obvious.

And a rolling lug bush 3. The plate spring and the frame are in soft connection, so that the comfort of the suspension is ensured, and the purpose of noise reduction is achieved.

An end rubber gasket 4. The metal pins 11 are arranged on two sides and are in interference connection with the first leaf spring 1 and the second leaf spring 2, so that abrasion between the leaf springs can be reduced, and meanwhile, the metal pins can prevent the leaf springs from larger front and back movement and left and right misplacement.

And a limiting block 5 is integrated. The limiting block 5 can play a role in limiting the larger dynamic deflection of the plate spring, so that the plate spring is prevented from being broken due to the fact that the plate spring exceeds the limit stress caused by the overlarge dynamic deflection, meanwhile, the limiting block 5 is separated from the plate spring in advance, modularization integration is carried out, and the loading efficiency of the whole vehicle can be improved.

An integrated damper sub-mount 6. The lower mounting point of the shock absorber is integrated with the plate spring in a modularized mode, and the shock absorber is split-assembled with the plate spring in advance, so that the loading efficiency of the whole vehicle can be improved.

And (5) designing a jack fulcrum. The bottom surface of the jack gasket 8 is provided with a round hole, which can provide a jack placement position to prevent the abrasion of the plate spring from being aggravated.

The terms "upper", "lower", "outside", "inside", and the like in the description and in the claims of the present utility model and in the above drawings, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A modular leaf spring assembly comprising a first leaf spring and a second leaf spring; the spring is characterized in that the front section and the rear section of the first leaf spring and the second leaf spring are both S-shaped; the front section is arranged at one side of the first leaf spring and the second leaf spring, which is close to the lug; one side of the first leaf spring and the second leaf spring, which is far away from the lug, is a rear section; the S-shaped radians of the front sections of the first leaf spring and the second leaf spring are respectively larger than the S-shaped radians of the rear sections of the first leaf spring and the second leaf spring.

2. The modular leaf spring assembly of claim 1 further comprising a coil bushing that is press fit into the lug of the first leaf spring by an interference fit.

3. The modular leaf spring assembly of claim 2 wherein the lug bushing is a steel tube and the surface of the steel tube is provided with an elastomeric layer.

4. The modular leaf spring assembly of claim 1 further comprising end rubber shims having upper and lower ends in interference engagement with the first and second leaf springs, respectively.

5. The modular leaf spring assembly of claim 4 wherein the end rubber shims have metal pins on both sides.

6. The modular leaf spring assembly of claim 1 further comprising a stop block mounted to the first leaf spring by a locking mechanism.

7. The modular leaf spring assembly of claim 6 wherein the locking mechanism comprises a center bolt and a center nut; the center bolt passes through the second leaf spring and the first leaf spring and fixes the limiting block on the first leaf spring through the center nut.

8. The modular leaf spring assembly of any one of claims 1-7 further comprising a damper subframe disposed in a lower portion of the stopper and having a lower mounting point on the first leaf spring.

9. The modular leaf spring assembly of any one of claims 1-7 further comprising an intermediate shim mounted between the first leaf spring and the second leaf spring.

10. The modular leaf spring assembly of any one of claims 1-7 further comprising a jack pad mounted to the second leaf spring and having a circular aperture in a bottom surface thereof.

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