CN217532453U

CN217532453U - Buffer structure, suspension system and vehicle

Info

Publication number: CN217532453U
Application number: CN202122163896.3U
Authority: CN
Inventors: 李玉魁; 庄英武
Original assignee: Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Current assignee: Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-10-04
Anticipated expiration: 2031-09-08

Abstract

The utility model relates to a buffer technical field, this buffer structure specifically can be applied to vehicle suspension system, buffer structure includes upper and lower mount pad (1, 6), upper and lower permanent magnet (3, 4) and dust cover (8), goes up mount pad (1), goes up permanent magnet (3), lower permanent magnet (4), lower mount pad (6) from the top sets gradually, goes up permanent magnet (3) and installs in the recess of terminal surface under last mount pad (1), install in the recess of mount pad (6) up end down permanent magnet (4) down, the both ends of dust cover (8) respectively with last mount pad (1), mount pad (6) fixed connection down, dust cover (8) are made by elastic material. The buffer structure utilizes the principle that like poles of magnetic materials repel each other and the huge magnetic force of a powerful permanent magnet, and when the buffer structure is applied to an automobile chassis suspension system, the problems of impact feeling and unsmooth running of a vehicle when the vehicle runs on a bad road are well solved.

Description

Buffer structure, suspension system and vehicle

Technical Field

The utility model relates to a buffer technical field, concretely relates to buffer structure for vehicle suspension system.

Background

The automobile chassis can produce when receiving the impact and strike the sense, seriously influences passenger's comfort level, for improving the automobile ride comfort, installs the buffer block with elastic element parallel connection in the suspension system for alleviate and strike. The buffer block also can be regarded as suspension spring's replenishment sometimes, as the auxiliary spring, except alleviating the impact and improving the ride comfort, still has the effect that promotes chassis side direction support ability concurrently, has improved the control performance of vehicle.

The automobile suspension system is widely made of a buffer block made of polyurethane materials, and the buffer block is made of natural rubber materials, so that the shock resistance of the buffer block is better, and the application is wider. However, the stiffness curve of the bump stop is generally non-linear, with increasing compression, the slope of the stiffness curve also increases, and at the end of the compression stroke, the bump stop stiffness rises sharply, typically reaching thousands of newtons per millimeter.

When the automobile passes through an uneven road surface at a certain speed, the height difference of the road surface can cause the suspension stroke to generate large stretching and compression, and after the suspension stroke is compressed to the limit position, if the speed of wheels relative to the automobile body is still large at the moment, a driver can feel obvious impact feeling and influence the driving smoothness of the automobile. The mechanism that this kind of impact produced lies in when the suspension stroke is compressed to being close to extreme position, and suspension system's buffer block rigidity is very big, and whole system's rigidity is also very big, and the impact on road surface directly transmits the automobile body through the buffer block that rigidity is very big after being compressed this moment, and then causes the impact, greatly reduced the ride comfort of vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a buffer structure to solve the technical problem that traditional polyurethane or rubber buffer block obviously strikeed the sense under the compression limit state. An object of the present invention is also to provide a suspension system including the buffer structure and a vehicle including the suspension system.

For realizing the utility model discloses a purpose, according to the utility model discloses a first aspect provides a buffer structure, wherein, buffer structure includes upper and lower mount pad, upper and lower permanent magnet and dust cover, goes up mount pad, last permanent magnet, lower permanent magnet, mount pad from the top down sets gradually down, wherein, go up the permanent magnet and install in the recess of terminal surface under last mount pad, down the permanent magnet is installed in the recess of mount pad up end down, goes up permanent magnet and lower permanent magnet and sets up relatively, the both ends of dust cover respectively with go up the mount pad fixed connection down, with upper and lower permanent magnet seal in the dust cover, the dust cover is made by elastic material.

Optionally, the buffer structure further comprises an upper magnetic isolation plate and a lower magnetic isolation plate, the upper magnetic isolation plate is located between the upper mounting seat and the upper permanent magnet, and the lower magnetic isolation plate is located between the lower mounting seat and the lower permanent magnet. Optionally, the upper and lower magnetic-isolation plates are both concave, the upper magnetic-isolation plate covers the upper end surface of the upper permanent magnet, and the lower magnetic-isolation plate covers the lower end surface of the lower permanent magnet.

Optionally, the center positions of the upper and lower permanent magnets are respectively provided with a through hole, the center positions of the upper and lower magnetism isolating plates are respectively provided with a through hole corresponding to the through hole, the center positions of the inner sides of the upper and lower mounting seats are respectively provided with a threaded blind hole corresponding to the through hole and the through hole, and the two fasteners respectively penetrate through the through hole, the through hole and the threaded blind hole for fastening.

Optionally, the dust cover is curved, and the inner surface of the dust cover is provided with a magnetic isolation material layer.

Optionally, the outer surface of the lower end of the upper mounting seat is provided with a circle of groove, the outer surface of the upper end of the lower mounting seat is provided with a circle of groove, the inner sides of the upper end and the lower end of the dust cover are respectively provided with a circle of protrusion, and the protrusions on the upper end and the lower end of the dust cover are respectively clamped with the grooves on the outer surfaces of the upper mounting seat and the lower mounting seat.

Optionally, through holes are symmetrically formed in two ends of the upper mounting seat, through holes are symmetrically formed in two ends of the lower mounting seat, and the upper end and the lower end of the buffer structure are respectively fixed through the through holes by the fasteners.

Optionally, the upper and lower mounting seats are made of aluminum alloy, copper alloy or other materials which are not easy to magnetize.

Additionally, the utility model also provides a suspension system, wherein, suspension system is last to install above scheme buffer structure.

Additionally, the utility model also provides a vehicle, wherein, the vehicle is provided with above scheme the suspension system.

Through the technical scheme, the utility model discloses the technological effect who reaches does: by utilizing the principle that like poles of magnetic materials repel each other and the huge magnetic force of a powerful permanent magnet, particularly the nonlinear characteristic that the magnetic force changes along with the distance between magnets, the buffer structure can be applied to an automobile chassis suspension system, and the problems of impact feeling and unsmooth running of a vehicle when the vehicle runs on a bad road are well solved. Through the reasonable design to buffer structure, avoided the magnetic pollution of powerful magnet to the surrounding environment to and technical problem such as mechanical wear, fatigue failure, abnormal sound, have very high practical value.

Drawings

Fig. 1 is an external view of a cushion structure according to an embodiment of the present invention;

fig. 2 is a sectional view of a cushion structure according to an embodiment of the present invention.

Description of the reference numerals

1 upper mounting seat and 2 upper magnetic isolation plate

3 upper magnet 4 lower magnet

5 lower magnetic isolation plate 6 lower mounting seat

7 fastener 8 dust cover

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

The utility model provides a buffer structure, wherein, buffer structure includes mount pad 1, mount pad 6 down, go up permanent magnet 3, lower permanent magnet 4, dust cover 8, go up mount pad 1, go up permanent magnet 3, lower permanent magnet 4, mount pad 6 sets gradually from the top down, it installs in the recess of terminal surface under last mount pad 1 to go up permanent magnet 3, lower permanent magnet 4 is installed in the recess of mount pad 6 up end down, it sets up with lower permanent magnet 4 relatively to go up permanent magnet 3, dust cover 8's both ends respectively with

last mount pad

1, 6 fixed connection of mount pad down, thereby with last permanent magnet 3 and lower permanent magnet 4 sealed in the dust cover, the dust cover is made by elastic material.

Wherein, go up

permanent magnet

3 and 4 optional powerful permanent magnets of lower permanent magnet, upper and lower powerful permanent magnet links to each other with two relative motion components through upper and lower mount pad respectively, and the centre is only connected through elastic dust cover 8, has avoided the emergence of problems such as friction, abnormal sound among the buffering process.

The upper and lower strong permanent magnets can generate nonlinear repulsion magnetic force, specifically, the slope of a repulsion magnetic force curve is continuously increased along with the increase of the compression amount, the repulsion magnetic force is sharply increased along with the reduction of the distance between two poles, and the impact problem caused by the similar rigid contact of the buffer structure at the compression limit can be avoided through reasonable calculation of the magnetic force and the type selection of the permanent magnets.

The dust cover 8 is made of an elastic material, and the elastic material in the present scheme belongs to a deformable material, and refers to a material which can be restored to an original state after an external acting force disappears, specifically, a material which can be restored to a final state which is the same as an original state within an instrument measurement error limit after the external acting force disappears within a certain limit range.

Wherein, buffer structure still includes upper magnetism-isolating plate 2, lower magnetism-isolating plate 5, and upper magnetism-isolating plate 2 is located between last mount pad 1 and the last permanent magnet 3, and lower magnetism-isolating plate 5 is located between mount pad 6 and lower permanent magnet 4 down.

The material of the magnetic isolation plate is thin plate material with magnetic isolation effect, such as iron, nickel, iron-nickel alloy, ferrite material, etc.

The upper magnetic isolation plate 2 and the lower magnetic isolation plate 5 are both concave, the upper magnetic isolation plate 2 covers the upper end face of the upper permanent magnet 3, and the lower magnetic isolation plate 5 covers the lower end face of the lower permanent magnet 4.

Preferably, the upper permanent magnet and the lower permanent magnet are disc bodies, the lower end of the upper mounting seat 1 and the upper end of the lower mounting seat 6 are cylinder structures, the lower end of the cylinder structure of the upper mounting seat 1 is provided with a circular groove matched with the upper permanent magnet 3, the upper end of the cylinder structure of the lower mounting seat 6 is provided with a circular groove matched with the lower permanent magnet 4, the upper magnetic isolation plate and the lower magnetic isolation plate are both concave and particularly in a circular cover shape and are respectively positioned between the upper mounting seat and the lower mounting seat and between the upper strong permanent magnet and the lower strong permanent magnet, the bottom edges of the upper magnetic isolation plate and the lower magnetic isolation plate are respectively attached to the mounting seat and the circular end face of the permanent magnet, the side edges of the upper magnetic isolation plate and the lower magnetic isolation plate are positioned between the side face of the circular groove of the mounting seat and the side face of the disc bodies of the permanent magnets, the function of the magnetic isolation plate is that the magnetic field is cut off, and the magnetic pollution of the buffer structure to the surrounding environment is reduced to the minimum.

Wherein, the upper and lower permanent magnet central point puts and opens the via hole respectively, and upper and lower magnetic shield central point department of putting corresponds the via hole and is equipped with the through-hole respectively, and upper and lower mount pad inboard center department corresponds via hole, through-hole are equipped with the screw thread blind hole respectively, and two fasteners 7 pass via hole, through-hole and screw thread blind hole respectively and fasten magnetic shield, permanent magnet, mount pad.

Preferably, the fastener is fastening screw, also can be other machinery field fasteners commonly used, and fastening screw's quantity can be one, also can be a plurality of, and when setting up a plurality of fastening screw, fastening screw uses buffer structure center pin as central symmetry and sets up, and at this moment, correspond fastening screw position on permanent magnet, magnetic shield, the mount pad and be provided with corresponding trompil/through-hole/blind hole, and fastening screw fixes permanent magnet, magnetic shield, mount pad three. The thread specification and the strength grade of the fastening screw need to be designed according to the stress conditions of the upper permanent magnet 3 and the lower permanent magnet 4, and in order to avoid loosening of the fastening thread and ensure the reliability of connection, special glue can be coated on the thread surface of the fastening screw and the nut contact surface.

The dustproof cover 8 is bent and can be wave-shaped, the inner surface of the dustproof cover is provided with a magnetic isolation material layer, and the magnetic isolation material and the dustproof cover jointly act to eliminate the problem of magnetic pollution of the powerful permanent magnet to the surrounding environment.

The dust cover 8 can also prevent pollutants such as sand, dust, muddy water and the like from entering the interior of the buffer structure; meanwhile, the dust cover 8 needs to have sufficient strength and toughness, so that the change of the internal space volume of the dust cover 8 can be absorbed through the elastic deformation of the dust cover 8 in the process of stretching and compressing the buffering structure.

Wherein, go up 1 lower extreme surface of mount pad and be equipped with the round recess, 6 upper end surfaces of lower mount pad are equipped with the round recess, and 8 upper ends of dust cover and lower extreme inboard respectively are equipped with the round arch, and 8 upper and lower end archs of dust cover respectively with

last mount pad

1, 6 surface groove joint of lower mount pad. Of course, other fixing means commonly used in the mechanical field may be used to fasten the two ends of the dust cover 8 to the upper and lower mounting seats, for example, fasteners such as screws and rivets may be used for connection.

Through holes are symmetrically formed in two ends of the upper mounting seat 1, through holes are symmetrically formed in two ends of the lower mounting seat 6, and the upper end and the lower end of the buffer structure are respectively fixed through fasteners through the through holes; specifically, the upper and lower mounting bases are identical in structure and function, but are mounted at different positions, and a fastening member such as a fastening bolt connects the upper and lower mounting bases with the two relatively moving members, respectively, through a through hole.

The upper and lower mounting seats are made of aluminum alloy, copper alloy or other materials which are not easy to magnetize, meanwhile, the mounting seat materials need to meet the strength requirement, the buffer structure and the relative motion component can be reliably connected, and the powerful permanent magnet and the dust cover 8 can be reliably fixed.

Additionally, the utility model also provides a suspension system, wherein, suspension system is provided with above scheme buffer structure, when setting up in suspension system, buffer structure and suspension spring are parallelly connected, replace existing polyurethane or rubber buffer block.

In addition, the utility model also provides a vehicle, which is provided with the suspension system of the proposal; at this time, the lower mounting seat 6 of the buffer structure is usually connected with a suspension swing arm or a torsion beam, and the upper mounting seat 1 is usually connected with a vehicle body girder; the materials and the sizes of the upper permanent magnet and the lower permanent magnet are calculated and determined according to the vehicle limit load working condition, so that the upper permanent magnet and the lower permanent magnet can provide enough magnetic force to enable a certain safety gap to be kept between the upper permanent magnet and the lower permanent magnet without contact under the vehicle limit load working condition, impact feeling caused by rigid contact is avoided, and running smoothness is guaranteed.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and the above-described buffer structure can be applied to other fields as well, in addition to the application to the automobile field. The technical concept of the utility model is in the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical characteristics.

In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The utility model provides a buffer structure, its characterized in that, buffer structure includes upper and lower mount pad (1, 6), upper and lower permanent magnet (3, 4) and dust cover (8), goes up mount pad (1), goes up permanent magnet (3), lower permanent magnet (4), lower mount pad (6) from the top sets gradually, wherein, go up in permanent magnet (3) install the recess of terminal surface under last mount pad (1), install in the recess of mount pad (6) up end down permanent magnet (4) down, go up permanent magnet (3) and lower permanent magnet (4) and set up relatively, the both ends of dust cover (8) respectively with go up mount pad (1) mount pad (6) fixed connection down, with upper and lower permanent magnet (3, 4) seal in dust cover (8), dust cover (8) are made by elastic material.

2. The buffer structure according to claim 1, further comprising an upper magnetic isolation plate (2) and a lower magnetic isolation plate (5), wherein the upper magnetic isolation plate (2) is located between the upper mounting seat (1) and the upper permanent magnet (3), and the lower magnetic isolation plate (5) is located between the lower mounting seat (6) and the lower permanent magnet (4).

3. The buffer structure according to claim 2, wherein the upper and lower magnetic isolation plates (2, 5) are both concave, the upper magnetic isolation plate (2) covers the upper end surface of the upper permanent magnet (3), and the lower magnetic isolation plate (5) covers the lower end surface of the lower permanent magnet (4).

4. A buffer structure according to claim 3, wherein the upper and lower permanent magnets (3, 4) are provided with through holes at their central positions, the upper and lower magnetism isolating plates (2, 5) are provided with through holes at their central positions corresponding to the through holes, the upper and lower mounting seats (1, 6) are provided with blind threaded holes at their inner centers corresponding to the through holes, and two fasteners (7) are fastened through the through holes and the blind threaded holes.

5. Cushioning structure according to claim 1, characterized in that the dust cover (8) is curved, the inner surface of which is provided with a layer of magnetic isolating material.

6. The buffer structure according to claim 5, wherein the outer surface of the lower end of the upper mounting seat (1) is provided with a circle of groove, the outer surface of the upper end of the lower mounting seat (6) is provided with a circle of groove, the inner sides of the upper end and the lower end of the dust cover (8) are respectively provided with a circle of bulge, and the bulges at the upper end and the lower end of the dust cover (8) are respectively clamped with the grooves on the outer surfaces of the upper mounting seat (1) and the lower mounting seat (6).

7. The buffer structure according to claim 1, wherein through holes are symmetrically formed at both ends of the upper mounting seat (1), through holes are symmetrically formed at both ends of the lower mounting seat (6), and the upper end and the lower end of the buffer structure are respectively fixed by fasteners through the through holes.

8. The buffer structure according to claim 7, wherein the upper and lower mounting seats (1, 6) are made of aluminum alloy or copper alloy.

9. A suspension system characterized in that a shock-absorbing structure according to any one of claims 1 to 8 is mounted on the suspension system.

10. A vehicle characterized in that it is provided with a suspension system according to claim 9.