Lightweight automobile body and frame suspension structure

Abstract

The utility model relates to the technical field of automobile parts, in particular to a light automobile body and frame suspension structure. Comprising at least two same anti-vibration pads, a fastening bolt and a matching nut a, and a plurality of fastening bolts and matching nuts b, each anti-vibration pad is provided with a mounting seat, an inner sleeve, a rubber connecting body and an outer sleeve from inside to outside, and the mounting seats, the inner sleeves, the rubber connecting bodies and the outer sleeves are sequentially connected to form a revolving body with a coaxial through hole; the inner sleeve is provided with a wide opening and a narrow opening from top to bottom, the mounting seat is formed by integrally connecting a transverse disc and a longitudinal cylinder, and the longitudinal cylinder of the mounting seat is inserted into the wide opening of the inner sleeve to form integral connection; the rubber connector is connected with the inner sleeve and the outer sleeve; the outer sleeve is provided with a plurality of connecting holes which are respectively connected with a vehicle body end or a vehicle frame; according to the suspension structure, fastening bolts a simultaneously pass through coaxial through holes of the two anti-vibration pads and are locked by matching nuts to connect the two anti-vibration pads in series in an up-and-down symmetrical mode, and a plurality of fastening bolts b respectively pass through connecting holes and are locked by matching nuts to enable the two anti-vibration pads in the up-and-down symmetrical mode to be correspondingly and fixedly connected to the vehicle body end and the vehicle frame respectively. According to the structure, the two anti-vibration pads are connected in series for bearing and connection, the structure is reasonable, light weight is achieved, the reliability of the anti-vibration pads is improved, the service life of the anti-vibration pads is prolonged, meanwhile, the NVH performance of a vehicle is improved, and the riding comfort of the vehicle is more fully improved.

Description

Technical Field

[0001] The utility model relates to a light automobile body and frame suspension component, specifically a light automobile body and frame suspension structure, and belongs to the technical field of automobile parts assembly. Background Art

[0002] For vehicles with off-road needs, the road conditions are relatively bad and the ride comfort is worse than that on paved roads. Such vehicles are mainly non-load-bearing bodies. In order to improve the ride comfort of the vehicle, flexible suspension structures and elastic suspension structures are often arranged between the body and the frame.

[0003] At present, the light automobile body and frame using a vibration damping pad cannot well solve the problem of the suspension structure between the body and the frame that is both flexible and elastic. The light automobile body and frame suspension structure can improve the flexibility of the body and the frame by arranging several pairs of rubber vibration damping structures between the body and the frame, and can also solve the elastic connection between the body and the frame to a greater extent, and ultimately attenuate the vibration transmitted from the frame to the body by the powertrain, road surface, drive shaft and other excitations, thereby improving the vehicle's noise, vibration and harshness performance, that is, noise, vibration and harshness performance, referred to as NVH performance.

[0004] In order to improve the NVH performance of the vehicle, the body suspension system is required to have a relatively small stiffness. The vulcanized rubber of the vibration damping pad is relatively soft. The smaller stiffness of the vibration damping pad also brings a problem that the vulcanized rubber of the vibration damping pad is prone to cracking. It is difficult to design the vibration damping pad product to take into account both the reliability of the vibration damping pad and the NVH performance of the whole vehicle. The suspension structure of the light vehicle body and frame adopts a series structure of two vibration damping pads to reduce the overall stiffness of the body and frame suspension structure, thereby ultimately improving the comfort of the vehicle passengers. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art. On the basis of fully considering the purpose of the suspension structure, two vibration damping pads are connected in series, the stiffness of the suspension system is reduced, and the NVH performance of the vehicle is fully improved. A lightweight automobile body and frame suspension structure is provided for bearing and connection, which is lightweight and has a reasonable structure, and the reliability of the vibration damping pad is also improved.

[0006] In order to solve the above technical problems, the utility model provides a light automobile body and frame suspension structure, which is characterized by: comprising at least two identical vibration damping pads, an a fastening bolt and a matching nut, a plurality of b fastening bolts and matching nuts, a vibration damping pad having a mounting seat, an inner sleeve, a rubber connector and an outer sleeve from the inside to the outside, and being sequentially connected to form a rotating body with a coaxial through hole; the inner sleeve is funnel-shaped, and has a wide mouth and a narrow mouth from top to bottom; the mounting seat is integrally connected by a transverse disc and a longitudinal cylinder, and the longitudinal direction of the mounting seat is The cylinder is inserted into the wide opening of the inner sleeve to form an integral connection; the rubber connector is correspondingly connected to the inner sleeve and the outer sleeve; the outer sleeve is provided with a plurality of connection holes connected to the vehicle body end or the vehicle frame respectively; the automobile body and frame suspension structure: a fastening bolts pass through the coaxial through holes of the two vibration damping pads at the same time and are locked by matching nuts to connect the two vibration damping pads in series in an upper and lower symmetrical manner, and a plurality of b fastening bolts pass through the respective connection holes and are locked by matching nuts to fix the upper and lower symmetrical vibration damping pads to the vehicle body end and the vehicle frame respectively.

[0007] Furthermore, the inner sleeve, the rubber connector and the outer sleeve are integrated into one after vulcanization; the vibration damping pad is shear-type and has an upper disc and a lower disc structure, wherein the diameter of the lower disc is greater than the diameter of the upper disc, thereby increasing the stability of the vibration damping pad.

[0008] Furthermore, the cross-section of the mounting seat is "T"-shaped, and the cylindrical side wall of the mounting seat and the inner wall of the inner sleeve are connected by interference fit. The pull-out force of the interference fit is greater than or equal to 3500 Newtons, which can ensure a reliable connection between the inner sleeve and the mounting seat and prevent abnormal noise due to vibration.

[0009] Furthermore, the narrow opening of each inner sleeve expands outwardly in the circumferential direction to form an assembly platform, so that when the upper and lower symmetrical vibration damping pads are connected in series, the two assembly platform planes can be fitted together without gaps to the maximum extent; the assembly platform has no borders or intersections with the rubber connector on the vibration damping pad, thus avoiding interference of the rubber connector when the upper and lower vibration damping pads move up and down; when the upper and lower vibration damping pads are connected in series symmetrically, a fastening bolt is connected to the narrow openings of the two inner sleeves in a socket-type connection, and at the same time supports the fixation of a fastening bolt, and a fastening bolt and its matching nut work together to form an extrusion force on the upper and lower vibration damping pads.

[0010] Furthermore, each outer sleeve structure is spindle-shaped, and a rectangular platform is integrally formed around the outer sleeve; there are at least four connecting holes, which are located inside the four corners of the rectangular platform and are symmetrically arranged front, back, left and right to ensure stability in the connection of the vibration damping pad and reliability during use.

[0011] Furthermore, in the automobile body and frame suspension structure: in the automobile body and frame suspension structure: the upper vibration damping pad is fixedly connected to the body end through its four connecting holes respectively through b fastening bolts and matched nuts therewith, and the lower vibration damping pad is fixedly connected to the frame through its four connecting holes respectively through b fastening bolts and matched nuts therewith.

[0012] Furthermore, the mounting seat and the inner sleeve are made of high-strength aluminum alloy No. 12 aluminum material, and the outer sleeve is made of low-carbon steel material.

[0013] Furthermore, the a fastening bolt is an M16 hexagonal flange bolt with a strength grade of 10.9; the b fastening bolt is an M10 hexagonal flange bolt with a strength grade of 8.8.

[0014] The beneficial effects of the utility model are as follows: its structure mainly adopts two identical and upper and lower symmetrical vibration damping pads which are connected in series symmetrically, so as to better attenuate the vibration transmitted from the frame to the vehicle body, and its effect is obviously better than the structure of a single vibration damping pad, and the structure is ingeniously conceived, easy to assemble, and reliable to use, which reduces the overall stiffness of the suspension system and improves the ride comfort of the vehicle. Since the displacement of the single vibration damping pad is reduced, the reliability and service life of the vibration damping pad are improved, and the manufacturing cost is not high; it meets the research and development and production requirements of vehicle components, can ensure the reasonable spatial position of the vehicle body and frame, and has passed the test and production verification to meet the production process requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of the utility model shock-absorbing pad.

[0016] Figure 2 for Figure 1 Center section view.

[0017] Figure 3 for Figure 1 Top view.

[0018] Figure 4 It is a schematic diagram of the vehicle body and frame suspension structure of the utility model.

[0019] Explanation of the accompanying drawings: A-body end, B-frame, 1-shock pad, 2-a fastening bolt, 3-b fastening bolt, 11-mounting seat, 12-inner sleeve, 121-assembly platform, 13-rubber connector, 14-outer sleeve, 141-rectangular platform, k-coaxial through hole, q-connecting hole. Implementation

[0020] This embodiment provides a light automobile body and frame suspension structure, the structure is as follows Figure 1-Figure 4As shown, it includes at least two identical vibration damping pads 1, a fastening bolt 2 and a matching nut, a plurality of fastening bolts 3 and matching nuts, and a vibration damping pad 1 has a mounting seat 11, an inner sleeve 12, a rubber connector 13 and an outer sleeve 14 from the inside to the outside, and is sequentially connected to form a rotating body with a coaxial through hole k, as shown in FIG. Figure 1 , 2 As shown; In this embodiment, Figure 2 , 4 : The inner sleeve 12 is funnel-shaped, and has a wide mouth and a narrow mouth from top to bottom; the mounting seat 11 is connected as a whole by a transverse disc and a longitudinal cylinder, and the longitudinal cylinder of the mounting seat 11 is inserted into the wide mouth of the inner sleeve 12 to form an integral connection, and the rubber connector 13 is connected to the inner sleeve 12 and the outer sleeve 14 correspondingly, and the inner sleeve 12, the rubber connector 13 and the outer sleeve 14 are integrated after vulcanization, and the vibration damping pad 1 is shear-shaped and forms an upper disc and a lower disc structure, wherein the diameter of the lower disc is larger than the diameter of the upper disc, such as Figure 1 , 2 As shown, this lays the foundation for stability and reliability during use and can reduce the overall stiffness of the suspension system; the outer sleeve 14 is in a spindle shape, and a plurality of connection holes q are provided on the outer sleeve 14 to be connected to the vehicle body end A or the frame B respectively, and a rectangular platform 141 is integrally formed around the outer sleeve 14; further combined Figure 1 , 3 : There are at least four connection holes q, which are located inside the four corners of the rectangular platform 141 and are symmetrically arranged in the front, rear, left and right directions to ensure the stability of the connection between the two vibration damping pads 1 and the reliability during use. Figure 4 : a fastening bolts 2 pass through the coaxial through holes k of the two vibration damping pads 1 at the same time and are tightened by matching nuts to connect the two vibration damping pads symmetrically in series, and a plurality of b fastening bolts 3 pass through the connecting holes q respectively and are tightened by matching nuts to fix the upper and lower symmetrical vibration damping pads to the vehicle body end A and the vehicle frame B respectively.

[0021] Further integration Figure 2 , 4The cross section of the mounting seat 11 is "T" shaped, and the cylindrical side wall of the mounting seat 11 and the inner wall of the inner sleeve 12 are connected by interference fit. The pull-out force of the interference fit is greater than or equal to 3500 Newtons, which can ensure that the inner sleeve 12 and the mounting seat 11 are reliably connected to prevent abnormal noise caused by vibration. The narrow opening of each inner sleeve 12 expands outward in the circumferential direction to form an assembly platform 121, which is convenient for the two assembly platforms 121 to fit together without gaps when the upper and lower symmetrical vibration damping pads are connected in series; the assembly platform 121 has no borders or intersections with the rubber connector 13 on the vibration damping pad 1, which avoids the interference of the rubber connector 13 when the upper and lower vibration damping pads move up and down; when the upper and lower vibration damping pads are connected in series symmetrically, a fastening bolt 2 is connected with the narrow openings of the two inner sleeves 12 by socket-type, and at the same time supports the fixation of a fastening bolt 2, and a fastening bolt 2 and its matching nut work together to form an extrusion force on the upper and lower vibration damping pads.

[0022] The automobile body and frame suspension structure are specifically assembled and implemented with reference to Figure 4 :The upper vibration damping pad 1 is connected to the vehicle body end A through its four connection holes q respectively by fastening bolts 3 b and matching nuts, and the lower vibration damping pad 1 is connected to the vehicle frame B through its four connection holes q respectively by fastening bolts 3 b and matching nuts. Figure 4 It can be seen that two identical vibration damping pads 1 are connected in series to reduce the overall stiffness of the suspension system, and can also solve the elastic connection between the vehicle body and the frame to a greater extent, and ultimately attenuate the vibration transmitted from the frame to the vehicle body by excitations such as the powertrain, road surface, and drive shaft, thereby improving the ride comfort of the vehicle and the NVH performance of the vehicle; it also further improves the level of commonality of parts and reduces production costs.

[0023] In the above embodiment, the mounting seat 11 and the inner sleeve 12 are preferably made of high-strength aluminum alloy No. 12 aluminum material, and the outer sleeve 14 is preferably made of low-carbon steel material; a fastening bolt 2 is an M16 hexagonal flange bolt with a strength grade of 10.9; b fastening bolt 3 is an M10 hexagonal flange bolt with a strength grade of 8.8.

[0024] The utility model is designed on the basis of making full use of material properties and deeply optimizing the structure, making the design more reasonable, and ultimately having the advantages of being lightweight and practical. The utility model fully considers the purpose of suspension, supports mass and limits displacement, and is used for bearing and vibration reduction at the same time, and can also increase the connection flexibility; it can also better ensure that the requirements of convenient and fast assembly, safety and reliability are met. According to the needs of structural layout or the performance of the whole vehicle, multiple vibration damping pads can also be used to form a new suspension structure of the body and frame, which improves the level of commonality of parts and reduces production and manufacturing costs.

[0025] 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 lightweight automobile body and frame suspension structure, characterized in that: The invention comprises at least two identical vibration damping pads, an a fastening bolt and a matching nut, and a plurality of b fastening bolts and matching nuts. The vibration damping pad has a mounting seat, an inner sleeve, a rubber connector and an outer sleeve from the inside to the outside, and is sequentially connected to form a rotating body with a coaxial through hole; the inner sleeve is funnel-shaped, and has a wide mouth and a narrow mouth from top to bottom; the mounting seat is integrally connected by a transverse disc and a longitudinal cylinder, and the longitudinal cylinder of the mounting seat is inserted into the wide mouth of the inner sleeve to form an integral connection; the rubber connector is correspondingly connected to the inner sleeve and the outer sleeve; the outer sleeve is provided with a plurality of connecting holes respectively connected to the vehicle body end or the vehicle frame; the automobile body and vehicle frame suspension structure: the a fastening bolt passes through the coaxial through holes of the two vibration damping pads at the same time and is locked by the matching nut to connect the two vibration damping pads in series in an upper and lower symmetrical manner, and the plurality of b fastening bolts pass through the respective connecting holes and are locked by the matching nut to fix the upper and lower symmetrical vibration damping pads respectively to the vehicle body end and the vehicle frame.

2. A lightweight automobile body and frame suspension structure according to claim 1, characterized in that: The inner sleeve, the rubber connector and the outer sleeve are integrated into one after vulcanization; the vibration damping pad is shear-type and has an upper disc and a lower disc structure, wherein the diameter of the lower disc is greater than the diameter of the upper disc.

3. A lightweight automobile body and frame suspension structure according to claim 1, characterized in that: The cross section of the mounting seat is "T"-shaped, and the cylindrical side wall of the mounting seat and the inner wall of the inner sleeve are connected by interference fit, and the pull-out force of the interference fit is greater than or equal to 3500 Newtons.

4. A lightweight automobile body and frame suspension structure according to claim 1, characterized in that : The narrow opening of each inner sleeve expands outward in the circumferential direction to form an assembly platform. The assembly platform has no borders or intersections with the rubber connector on the vibration damping pad. When the upper and lower vibration damping pads are connected in series symmetrically, a fastening bolt is connected to the narrow openings of the two inner sleeves in a socket-type connection. A fastening bolt and its matching nut work together to form an extrusion force on the upper and lower vibration damping pads at the same time.

5. A lightweight automobile body and frame suspension structure according to claim 1, characterized in that: Each outer sleeve structure is spindle-shaped, and a rectangular platform is integrally formed around the outer sleeve. There are at least four connecting holes, which are located inside the four corners of the rectangular platform and are symmetrically arranged in front, back, left and right.

6. A lightweight automobile body and frame suspension structure according to claim 5, characterized in that: In the automobile body and frame suspension structure: the upper vibration damping pad is connected to the vehicle body end by respectively passing b fastening bolts through its four connection holes and cooperating with matching nuts, and the lower vibration damping pad is connected to the vehicle frame by respectively passing b fastening bolts through its four connection holes and cooperating with matching nuts.

7. A lightweight automobile body and frame suspension structure according to claim 1, characterized in that: The mounting seat and the inner sleeve are made of No. 12 aluminum material of high-strength aluminum alloy, and the outer sleeve is made of low-carbon steel material.

8. A lightweight automobile body and frame suspension structure according to claim 1, characterized in that: The a fastening bolt is an M16 hexagonal flange bolt with a strength grade of 10.9; the b fastening bolt is an M10 hexagonal flange bolt with a strength grade of 8.8.

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