Plate spring suspension

By introducing a damping sleeve of spring roll bearing and connecting sleeve into the leaf spring suspension on the frame, the problem of insufficient vibration and noise transmission in the prior art is solved, and a more effective damping effect is achieved, improving the comfort and noise control of the vehicle.

CN120134856APending Publication Date: 2025-06-13SUMITOMO RIKO CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202411815360.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-11-27
Filing Date
2024-12-11
Publication Date
2025-06-13

AI Technical Summary

Technical Problem

The existing leaf spring suspension on the frame has shortcomings in absorbing vibration and noise, especially in traditional leaf spring suspensions, where vibration and noise are easily transmitted to the frame, resulting in an unpleasant driving experience.

Method used

A suspension arrangement including spring roll bearings and a connecting sleeve is used, and is connected to the frame through a damping sleeve of the connecting sleeve, providing a multi-layered damping effect to absorb vibration.

Benefits of technology

The design provides excellent damping over a wide frequency range, significantly reducing vibration and noise conduction, improving vehicle comfort and noise levels.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120134856A_ABST
    Figure CN120134856A_ABST
Patent Text Reader

Abstract

The invention relates to a suspension (10, 10a, 10b) for a leaf spring (21) on a vehicle frame (50), in which a leaf spring link (16, 16a, 16b) is provided, by means of which a lug (20) of the leaf spring (21) is held, in which a spring lug bearing (22, 22a, 22b) is provided, which is embedded in the lug (20) of the leaf spring (21), in which a connecting section (14, 14a) is also provided, which connects the leaf spring link (16, 16a, 16b) to the vehicle frame (50), while at least one connecting sleeve (12, 12 ', 12a, 12a', 12b, 12b ') is provided, the invention relates to a connecting sleeve (12, 12 ', 12a, 12a', 12b, 12b '), by means of which the connecting section (14, 14a) can be assembled to the vehicle frame, said connecting sleeve (12, 12', 12a, 12a ', 12b, 12b') comprising a damping sleeve (34, 34a, 34b) which is inserted in a damping manner between the connecting section (14, 14a) and the vehicle frame (50).
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to a suspension for a leaf spring on a vehicle frame, wherein the leaf spring is held at its ends by leaf spring eyes. The spring eyes are assembled to the suspension via spring eye bearings, wherein the spring eye bearings are connected to the vehicle frame via connecting sections. The connecting sections are assembled to the vehicle frame. Background Art

[0002] Examples of the above type are disclosed in the prior art. Patent document EP0615869B1 discloses a single-sided suspension for a leaf spring on a vehicle frame, wherein a spring eye bearing is embedded in the leaf spring eye, and the spring eye bearing consists of an elastic sleeve and a metal sleeve vulcanized therein. The elastic sleeve is used to suppress vibrations and audible noises emitted by vehicle interconnecting components, or to offset impacts to a certain extent. The suspension proposed in this document is rigidly connected to the vehicle frame, and the frequency transmitted by the leaf spring is only transmitted to the vehicle frame in a damped manner through the elastic sleeve.

[0003] Patent document EP1600312A1 also discloses a leaf spring suspension, wherein a recess is provided in the vehicle frame or the recess is a separate component to accommodate the spring eye bearing, and the structure of the spring eye bearing is similar to that in the above prior art document. Here, only the layer sequence is exchanged, that is, the retaining pin is first surrounded by the elastic sleeve, and then the elastic sleeve is surrounded by the metal sleeve. Here, the spectrum from the leaf spring is also only damped by the elastic sleeve. Summary of the Invention

[0004] The object of the present invention is to propose a simple single-sided suspension for a leaf spring on a vehicle frame, which can advantageously absorb vibrations in the interference area, thereby damping the vibrations. The suspension should be embedded at both ends of the leaf spring.

[0005] According to the present invention, the suspension arrangement of the present invention includes at least one connecting sleeve, and the connecting section is fixed to the vehicle frame through the connecting sleeve. Advantageously, the suspension arrangement of the present invention includes a plurality of connecting sleeves, such as two, three or four connecting sleeves.

[0006] The advantage of this suspension arrangement of the present invention is that the existing spring eye bearings are combined with one or more connecting sleeves, which can provide unexpectedly good damping in a quite large frequency range, which may otherwise cause unpleasant vibrations and noises, especially in motor vehicles with traditional leaf spring suspensions. This applies to both internal combustion engine-powered vehicles and electric motor-powered vehicles or hybrid vehicles, because during operation, not only the engine, especially the gearbox and its gears, will also generate noises and vibrations within the audible range.

[0007] According to the present invention, a suspension for a leaf spring on a vehicle frame is proposed. The suspension has a leaf spring link (by which the leaf spring eye is held), a spring eye bearing embedded in the leaf spring eye, a connecting section connecting the leaf spring link to the vehicle frame, and at least one connector (by which the connecting section can be assembled to the vehicle frame). It is characterized in that the connector has a damping sleeve interposed in a damping manner between the connecting section and the vehicle frame.

[0008] In particular, two connectors of the above type are arranged on each of the left and right sides of the connecting section, or four connectors are provided, preferably two connectors are arranged on each of the left and right sides of the connecting section.

[0009] By the arrangement of the spring eye bearing and the connecting sleeve, the spectrum of the propagated vibration can be restricted. Importantly, the configuration and mass of the suspension according to the present invention contribute to ensuring that the natural frequency of the suspension according to the present invention is suitable for preventing interference vibrations or noises generated by devices other than the leaf spring.

[0010] The damping sleeve of the connecting sleeve is advantageously configured to be elastically deformable vertically and / or horizontally, thereby enabling damping characteristics to be provided. In the case of multiple connecting sections and multiple damping sleeves, the damping sleeves can also be designed differently to adapt to specific vibrations or spectra that may come from vibration sources or noise sources.

[0011] Advantageously, a support sleeve can be provided, the connecting section is attached to the support sleeve, and the support sleeve is placed on the connecting sleeve. In this way, the damping sleeve can be more evenly stressed.

[0012] On the other hand, for vertical assembly, it is advantageous to provide a abutting sleeve, the connecting section laterally abuts against the abutting sleeve, and the abutting sleeve laterally abuts against the connecting sleeve.

[0013] If an abutting sleeve is provided, the abutting sleeve can be vertically narrower than the damping sleeve.

[0014] The advantage of using the abutting sleeve is that there is a vertical gap between the abutting sleeve and the vehicle frame and / or between the abutting sleeve and the outer flange.

[0015] Advantageously, the support sleeve can be designed to be narrower than the damping sleeve in the transverse direction (here in the x direction), that is, the damping sleeve protrudes from both ends of the particularly hollow cylindrical support sleeve. In this way, the vibration transmitted by the leaf spring can be kept away from the connecting section, thereby minimizing vibrations and noises.

[0016] In this regard, it is advantageous that there is a lateral gap between the support sleeve and the vehicle frame and / or between the support sleeve and the outer flange of the connecting sleeve. This helps to eliminate the contact for vibration and noise transmission.

[0017] Advantageously, the leaf spring link can be arranged at least substantially vertically below at least one connecting sleeve such that the center of the leaf spring link is at least approximately vertically located below the connecting section. In this way, sometimes the huge forces on the suspension of the present invention can act in a similar manner, so that one or more damping sleeves of, for example, the connecting sleeve are subjected to a more uniform load. Other components of the suspension of the present invention will also bear a more uniform mechanical stress due to this configuration, thereby reducing wear and also helping to avoid damage.

[0018] In this regard, the leaf spring link and / or the leaf spring eye bearing are advantageously designed to be substantially symmetric about the vertical direction (here the y-direction), so that the dimensions of the leaf spring eyes in the lateral direction with respect to the vertical are at least approximately equal. According to the present invention, this arrangement helps to guide the load substantially vertically into the suspension, eliminating the lever effect that may cause overloading and wear.

[0019] Advantageously, the spring eye bearing has an intermediate sleeve made of a damping material such as rubber. Therefore, it is advantageous that the damping sleeve accommodated in the connecting sleeve is also made of a damping material. In this regard, the damping material should have resilience characteristics and should also preferably have permanent resilience characteristics as much as possible so that the suspension of the present invention can function for a long time.

[0020] The connector can be implemented in a variety of different configurations to perform its intended function. The cross-sectional perimeter of the damping sleeve is equal, or it can be narrower towards its center and higher in the side regions. This design helps to center the support sleeve when the connector is pressed into the support sleeve. On the other hand, a damping sleeve with a uniform diameter (uniform in the direction of the cylindrical axis of symmetry of the connecting sleeve except for the edge region) can damp vibrations and noises more uniformly over the entire circumferential extension range. If the thickness of the damping sleeve is different in the direction of the cylindrical axis of the connecting sleeve, the support sleeve, which is part of the connecting section, should also match the shape of the damping sleeve.

[0021] The outer lateral spring and the inner lateral spring provided along the direction of the cylindrical axis of symmetry of the connecting sleeve on the edge of the connecting sleeve can also be designed differently. In the direction of the cylindrical axis of the connecting sleeve, the above-mentioned lateral springs can be wider or narrower, of equal width or unequal width.

[0022] Another aspect that can bring better assembly effects is the design of the connecting sleeve, that is, the connecting sleeve is composed of two halves, which can be symmetric or asymmetric. These two halves are plugged together, and thus the damping sleeve can be centered on the combined section or half of the inner sleeve of the connecting sleeve. During the pressing process, the damping sleeve only needs to bear slight stress. The connecting sleeve is fixed to the connecting section and the vehicle frame by bolts (such as bolts), thereby joining the two sections or halves of the inner sleeve. Description of the Drawings

[0023] The present invention will be described in detail below with reference to the accompanying drawings through embodiments.

[0024] Figure 1 Shows a partial central vertical cross-sectional view of an embodiment of the suspension of the present invention.

[0025] Figure 2 Shows a vertical cross-sectional view of another embodiment of the suspension of the present invention.

[0026] Figure 3 Shows according to Figure 1 and Figure 2 a vertical cross-sectional view of the connecting sleeve applied in the illustrated embodiment.

[0027] Figure 4 Shows the perspective view of the leaf spring fixing arrangement completed on the vehicle frame using the suspension shown in Figure 1 .

[0028] Figure 5 Shows the perspective view of the leaf spring fixing arrangement completed on the vehicle frame using the suspension shown in Figure 2 .

[0029] Figures 6a to 6c Shows a longitudinal sectional view of the connecting sleeve along the cylindrical axis of the connecting sleeve ( Figure 6a and Figure 6b ) and a perspective view ( Figure 6c ).

[0030] Figures 7a to 7c Shows Figures 6a to 6c the corresponding view.

[0031] Figures 8a to 8c Shows Figures 6a to 6c the corresponding connecting sleeve view.

[0032] Figures 9a to 9d Shows a longitudinal sectional view of two parts or two half inner sleeves of the connecting sleeve applying the damping sleeve of the present invention (the damping sleeve is also formed by two parts) ( Figure 9a and Figure 9b ) and a perspective view of a part of the inner sleeve ( Figure 9c and Figure 9d ).

[0033] Figures 10a to 10c Shows an exemplary schematic diagram and a frequency transmission spectrum that can reflect the motion system of the present invention, where Figure 10a schematically shows the double-mass spring system or the so-called double vibration isolation system of the present invention, Figure 10b shows a schematic diagram of a simple mass spring system for the aforementioned prior art suspension, Figure 10c shows Figure 10a and 10b the transmission spectrum schematically arranged in

[0034] Figure 11 Shows a partial cross-sectional view of another embodiment of the suspension of the present invention.

[0035] Figure 12 shows Figure 11 an overview perspective view of the suspension shown in the installed state.

[0036] Explanation of reference numerals

[0037] 10, 10a, 10b: suspension; 12, 12', 12a, 12a', 12b, 12b': connecting sleeve; 14: connecting section; 14a: double connecting section; 14b: extension; 15: corner section; 16, 16a, 16b: leaf spring link; 20: leaf spring eye; 21: leaf spring; 22, 22a, 22b: leaf spring eye bearing; 24, 24a, 24b: intermediate sleeve; 26, 26a, 26b: fitting sleeve; 30, 30a: support sleeve; 30b: abutting sleeve; 31, 31a, 31b: inner sleeve; 31a1, 31a2: partial inner sleeve; 32, 32a, 32b: outer flange; 33: partial through-hole; 34, 34a, 34b: damping sleeve; 40a: vertical spring; 41a: horizontal spring; 42a: outer lateral spring; 43b: outer horizontal spring; 44a: inner clearance; 46a: inner lateral spring; 47b: inner horizontal spring; 48a, 48b: outer clearance; 49: rib; 50: vehicle frame; 51: attachment plane; 52: connecting bolt pin; 54: retaining bolt pin; 54a: spring bolt pin. Detailed Description of the Invention

[0038] Figure 1 An embodiment of the suspension 10 is shown, in which two different damping systems are used to isolate interference frequencies and noise. One damping system includes a leaf spring eye bearing 22 that is embedded in a leaf spring eye 20 of a leaf spring 21 to be held. The leaf spring eye bearing 22 includes an intermediate sleeve 24 and a fitting sleeve 26 that can perform the function of an inner sleeve. The intermediate sleeve 24 is disposed between the fitting sleeve 26 and the leaf spring eye 20. A bolt can be inserted into the fitting sleeve 26 to fasten the leaf spring eye 20 to a leaf spring link 16, which in turn is fastened to the vehicle frame 50 through a connecting section 14.

[0039] The intermediate sleeve 24 can be made of a permanently elastic material, such as rubber or vibration-absorbing plastic, and is particularly used as a spring element or a rubber spring.

[0040] The second damping component is provided by the connecting sleeves 12, 12'. Two such connecting sleeves 12, 12' can be seen in the figure. In a particularly advantageous embodiment, four such connecting sleeves 12, 12' can be provided, which can be fastened to the vehicle frame 50 by bolts (not shown in this figure).

[0041] The connection sleeves 12, 12' can be designed to be the same or different, such as in terms of their dimensions, material selection, and specifications, so as to attenuate different frequency spectra, that is, to exhibit different natural frequencies. In this way, specific frequency spectra can be attenuated.

[0042] The connection sleeves 12, 12' have damping sleeves 34 provided on the inner sleeves 31. The damping sleeves can be made of damping materials, such as vibration-absorbing rubber or plastic. For example, the damping sleeve 34 can be vulcanized, glued, press-fitted onto the inner sleeve 31, etc.

[0043] The connecting section 14 is connected to the support sleeve 30, and the support sleeve 30 is sleeved on the outer periphery of the damping sleeves 34 of the connection sleeves 12, 12'. The damping sleeves 34 can be in the form of rubber springs or spring elements. The connection sleeves 12, 12' can be press-fitted into the support sleeve.

[0044] As shown in the figure, a force F acts on the suspension 10 in the vertical direction (Y direction). The distance between the lateral center (X direction) and the lateral center of the connection sleeves 12, 12' will result in uneven loads and lever forces, which may cause an increase in unilateral stress. The following will refer to Figure 3 One of its embodiments will be used to describe the connection sleeves 12, 12' in detail.

[0045] Figure 2 The suspension 10a according to another embodiment of the present invention is shown. The suspension 10a is designed in the same way with respect to the spring eye bearings 22a and the connection sleeves 12a, 12a'.

[0046] The leaf spring link 16a is designed to be symmetric about the double connecting section 14a and the extension 14b of the double connecting section 14a in the lateral X direction. In this way, Figure 1 the shown lever force can be minimized, and a uniform load can be provided, especially the load on the elastic components 24a, 34a.

[0047] Such as Figure 2 shown, the bolts 52, 54 are used both to fix the leaf spring eye 20 to the suspension of the present invention and to fix the suspension of the present invention to the vehicle frame 50.

[0048] Figure 3 The connection sleeve 12a available according to the present invention is shown. Of course, the connection sleeve 12a can also be designed differently, so as to be able to compensate for, for example, Figure 1 the lever force that may occur in the shown embodiment. For example, the entire connection sleeve 12a can be approximately conical or stepped, and the damping sleeve 34a can also be conical or only conical on one side. In this way, the lever force and vibration frequency spectrum that need to be balanced can be absorbed in an optimized manner.

[0049] Refer to Figure 3, the extension part 14b or the connecting section 14 is joined to the connecting sleeve 12a through the support sleeve 30a. A gap 44a is left between the extension part 14b or the connecting section 14 and the vehicle frame 50. A section 46a of the damping sleeve 34a can extend into the gap 44a, thereby serving as the inner lateral spring 46a. A corresponding gap 48a can be provided on the outside as the outer gap 48a, thereby providing the outer lateral spring 42a. The outer lateral spring 42a can abut against the outer flange 32a of the connecting sleeve 12a, so that two spring devices are provided in the lateral direction, namely the outer lateral spring 42a and the inner lateral spring 46a, and both of these spring devices have a damping effect. The damping sleeve 34a also extends between the inner sleeve 31a and the support sleeve 30a, thereby providing a vertical spring device. A connecting bolt 52 designed as a bolt, for example, fixes the connecting sleeve 12a and the suspensions 10, 10a of the present invention to the vehicle frame 50.

[0050] Figure 4 The vehicle frame 50 is shown. According to the present invention, the leaf spring 21 is assembled to the vehicle frame 50 through the spring eye 20. Here, the suspension 10 used according to the present invention is generally as Figure 1 shown, and the connecting sleeves 12, 12' can be used, as shown in FIGS. 6 to 9 below.

[0051] From Figure 5 it can be seen another embodiment of the present invention. The technical solution shown in this figure basically corresponds to Figure 4 the technical solution shown. Figure 2 The suspension 10a shown is used to hold the leaf spring 21 on the vehicle frame 50 in a damped manner. The connecting sleeves 12a, 12a' can be designed according to the connecting sleeves described in the present disclosure, or can be designed according to the modifications referring to the present disclosure.

[0052] Figures 6a to 6c An embodiment of the connecting sleeve of the present invention is shown. The inner sleeve 31a has been pressed into the damping sleeve 34a. The inner sleeve 31a has an outer flange 32a, and this outer flange 32a helps to prevent the damping sleeve 34a pressed onto the inner sleeve 31a from moving downward along the cylinder axis direction during operation. The damping sleeve 34a has an outer lateral spring 42a and an inner lateral spring 46a, aiming to make Figure 6b the support sleeve 30a shown not have metal contact with other components of the suspension of the present invention. Figure 6c A perspective view of an embodiment of the damping sleeve 34a is shown.

[0053] Figures 7a to 7c Corresponds to Figures 6a to 6c, but shows a damping sleeve 34a that tapers conically from both ends towards the center. This damping sleeve 34a is pressed onto the inner sleeve 31a, and at this time, the formed inner sleeve 31a has no outer flange. The slightly conical shape of the damping sleeve 34a continues the shape of the support sleeve 30a. In addition, an outer lateral spring 42a and an inner lateral spring 46a are also provided here to prevent direct contact between the metal components of the suspension of the present invention.

[0054] Figures 8a to 8c Another embodiment of the connecting sleeve of the present invention is also shown. Here, an outer flange 32a is provided on the inner sleeve 31a, and the damping sleeve 34a is uniformly formed along the longitudinal section of the connecting sleeve cylinder axis. In addition, an inner lateral spring 46a and an outer lateral spring 42 are also provided to buffer or isolate vibration between the support sleeve 30a and the metal components of the suspension of the present invention.

[0055] Figures 9a to 9d Still another embodiment of the connecting sleeve is shown. Here, it is formed by two sections, which can be called partial inner sleeves 31a1 and 31a2. The damping sleeve 34a can also be formed by two sections or segments, but it can also be in one piece.

[0056] For assembly purposes, the two partial inner sleeves 31a1 and 31a2 are connected to each other at the attachment plane 51, and thus can be mechanically fixed by pin bolts such as bolts (not shown). The provided ribs 49 will help prevent the damping sleeve 34a from twisting, and the support sleeve 30a is centered on Figures 9a to 9c the shown connecting sleeve. Figure 9d The position of the support sleeve 30a relative to Figures 9a to 9d the shown connecting sleeve is shown, but the damping sleeve 34a is not shown in this figure. The connecting pin or bolt passes through the central through-hole 33 to fasten the two partial inner sleeves 31a1 and 31a2 through the partial through-hole 33.

[0057] Figures 9a to 9d The embodiment shown in may show advantages during assembly, as additional damping characteristics can be provided as long as, for example, additional damping elements are introduced along the attachment plane 51.

[0058] Figures 10a to 10c Three systems for absorbing force and vibration are shown. Figure 10b Shows the situation when only one spring eye bearing 22, 22a (i.e., only one fitting is responsible for damping) is provided. It can be seen from Figure 10c that the vibration transmitted here is the largest, especially in the audible or tactile range, and may be extremely disturbing.

[0059] Figure 10aA dual system showing two embodiments of the present invention is provided with two damping systems. One damping system is provided by the connection sleeves 12, 12', 12a, 12a' of the present invention, while the other damping system is provided by the spring eye bearings 22, 22a.

[0060] From Figure 10c it can be seen that according to Figure 10b the maximum transmission value of the curve is almost eliminated, while Figure 10a the vibration or noise transmission shown occurs within this range. According to Figure 10a the maximum value at the starting point of the frequency curve is in a very low frequency range and thus has little practical effect in reality.

[0061] In summary, the dual damping system of the present invention has unexpectedly high vibration damping effect, especially for the vibration generated by the transmission gears, such as the vibration in the range of 400 Hz to 700 Hz, which is a frequency range that can be both heard and felt.

[0062] Figure 11 Another embodiment of the suspension 10b of the present invention is shown. The suspension 10b is vertically fixed to the vehicle frame 50 in the Y-axis direction.

[0063] Here, connection sleeves 12b, 12b' are provided which are vertically fixed to the vehicle frame 50. The associated structure of the leaf spring 21 (see Figure 12 ) with the leaf spring eye 20 is held on the vehicle frame 50 by the connecting bolt pins 52. In principle, each of the connection sleeves 12b, 12b' has the same design as the above-mentioned connection sleeves, except that the above-mentioned connection sleeves are horizontally oriented, while the connection sleeves in this embodiment are vertically oriented.

[0064] The lateral spring 41a is realized through the damping sleeve 34b, and at the same time, the outer horizontal spring 43b and the inner horizontal spring 47b in the outer gap 48b and the inner gap 44b are realized. Since the abutting sleeve 30b is shorter than the inner sleeve 31b in the vertical direction, the outer gap 48b and the inner gap are generated. A damping sleeve preferably made of materials such as elasto-permanent plastic and rubber is inserted, especially press-fitted, between the abutting sleeve 30b and the inner sleeve 31b. The outer flange 32b on one side and the base provided by the vehicle frame 50 limit the extension of the damping sleeve 34b. Figure 12 The leaf spring shown together with Figure 11 the leaf spring eye 20 shown and the components provided thereon (such as the leaf spring eye bearing 22b, the intermediate sleeve 24b and the fitting sleeve 26b) are held on the connecting section 14 by the retaining bolt pins 54, and its design is the same as that of other embodiments of the present invention described above.

[0065] Figure 12 Shows Figure 11The illustrated embodiment is in the mounting position on the vehicle frame 50. The connecting sleeves 12b, 12b' are vertically oriented. Here, two suspensions 10b are employed, and each suspension 10b is held on the vehicle frame 50 by two connecting sleeves 12b, 12b'. The leaf spring 21 is fastened to the vehicle frame 50 via the leaf spring eye 20 and the corresponding suspension 10b.

Claims

1. A suspension (10, 10a, 10b) for a leaf spring (21) on a vehicle frame (50), comprising the following features: A leaf spring connecting rod (16, 16a, 16b), through which the ear (20) of the leaf spring (21) is held; A spring ear bearing (22, 22a, 22b), wherein the spring ear bearing (22, 22a, 22b) is embedded in the ear (20) of the leaf spring (21); a connecting section (14, 14a) connecting the leaf spring link (16, 16a, 16b) to the vehicle frame (50); and at least one connecting sleeve (12, 12', 12a, 12a', 12b, 12b'), by means of which the connecting section (14, 14a) can be assembled to the vehicle frame (50), It is characterized in that The connecting sleeve (12, 12', 12a, 12a', 12b, 12b') is provided with a damping sleeve (34, 34a, 34b), and the damping sleeve (34, 34a, 34b) is inserted between the connecting section (14, 14a) and the vehicle frame (50) in a damping manner.

2. The suspension (10, 10a, 10b) according to claim 1, characterized in that The damping sleeve (34, 34a, 34b) is designed with a vertical spring (40a; 43b, 47b) and / or a transverse spring (42a, 46a; 41a).

3. The suspension (10, 10a, 10b) according to any one of claims 1 and 2, characterized in that A supporting sleeve (30, 30a) is provided, the connecting section (14) is attached to the supporting sleeve (30, 30a), and the supporting sleeve (30, 30a) is placed on the connecting sleeve (12, 12', 12a, 12a').

4. The suspension (10, 10a, 10b) according to any one of claims 1 and 2, characterized in that A contact sleeve (30b) is provided, the connecting section (14) laterally contacts the contact sleeve (30b), and the contact sleeve (30b) laterally contacts the connecting sleeve (12b, 12b').

5. The suspension (10, 10a) according to claim 3, characterized in that The support sleeve (30, 30a) is laterally narrower than the damping sleeve (34, 34a).

6. The suspension (10, 10a, 10b) according to claim 4, characterized in that The abutment sleeve (30b) is vertically narrower than the damping sleeve (34b).

7. The suspension (10, 10a, 10b) according to any one of claims 3 and 5, characterized in that A gap (44a, 48a) is laterally provided between the support sleeve (30, 30a) and the vehicle frame (50) and / or between the support sleeve (30, 30a) and the outer flange (32, 32a).

8. The suspension (10, 10a, 10b) according to any one of claims 4 and 6, characterized in that A gap (44b, 48b) is vertically provided between the abutment sleeve (30b) and the vehicle frame (50) and / or between the abutment sleeve (30b) and the outer flange (32b).

9. The suspension (10, 10a) according to any one of claims 1 to 8, characterized in that The leaf spring link (16, 16a) is at least substantially vertically arranged below at least one of the connecting sleeves (12a, 12a', 12b), so that the center of the leaf spring link (16, 16a) is substantially vertically located below the connecting section (14, 14a).

10. The suspension (10, 10a, 10b) according to any one of claims 1 to 8, characterized in that The leaf spring link (16a) and / or the spring lug bearing (22a) are substantially symmetrical with respect to the vertical direction (y), so that the leaf spring lugs (20) extend at least approximately equally in the transverse direction (x) with respect to the vertical direction (y).

11. The suspension (10, 10a, 10b) according to any one of claims 1 to 10, characterized in that The spring lug bearing (22, 22a) comprises an intermediate sleeve (24, 24a, 24b) made of a vibration-damping material, and / or the damping sleeve (34, 34a) is made of a vibration-damping material.

Citation Information

Patent Citations

  • Support bracket for maintenance free mounting of the leaf spring mounting eye in automotive vehicles, in particular commercial vehicles

    EP0615869B1

  • Leaf spring retaining bracket

    EP1600312A1