CN113464604A - Leaf spring structure assembly and torsion beam suspension structure thereof - Google Patents
Leaf spring structure assembly and torsion beam suspension structure thereof Download PDFInfo
- Publication number
- CN113464604A CN113464604A CN202110641478.2A CN202110641478A CN113464604A CN 113464604 A CN113464604 A CN 113464604A CN 202110641478 A CN202110641478 A CN 202110641478A CN 113464604 A CN113464604 A CN 113464604A
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- leaf spring
- spring body
- bending
- torsion beam
- connecting bolt
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- 239000000725 suspension Substances 0.000 title claims abstract description 31
- 239000000872 buffer Substances 0.000 claims abstract description 44
- 238000005452 bending Methods 0.000 claims abstract description 22
- 230000035939 shock Effects 0.000 claims abstract description 16
- 238000013016 damping Methods 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 2
- 239000006096 absorbing agent Substances 0.000 abstract description 10
- 230000006835 compression Effects 0.000 abstract description 10
- 238000007906 compression Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000003139 buffering effect Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a leaf spring structure assembly and a torsion beam suspension structure thereof. This leaf spring structure assembly includes the leaf spring body, and the leaf spring body is buckled along length direction many times by a leaf spring and is formed, and the department of bending is the arc, and the both ends head of leaf spring body all is provided with connecting bolt, all is provided with the shock attenuation buffer block in every bending layer of leaf spring body, not only can provide good buffering damping effect, and the leaf spring body can provide tensile and compression spacing moreover. Adopt torsion beam suspension structure of above-mentioned leaf spring structure assembly, because elastic element has limit function, can cancel the tensile stopper and the spacing block structure of compression of shock absorber assembly, make back shock absorber structure simpler, improved back shock absorber stability of quality to pass the bolt mounting hole of spring dish through the connecting bolt on the leaf spring body, recycle the direct fixed connection of fixation nut, the part integrated level is high, and the installation is consuming time fewly, and it is big to connect the stress surface, and is not fragile.
Description
Technical Field
The invention relates to the field of vehicle door assembly, in particular to a leaf spring structure assembly and a torsion beam suspension structure thereof.
Background
The suspension is a general term for all force transmission connecting devices between a frame or a bearing type vehicle body and/or wheels of an automobile, and has the functions of transmitting force and torque between the wheels and the frame, buffering impact force transmitted to the frame or the vehicle body from an uneven road surface and reducing vibration caused by the impact force so as to ensure the smoothness and the steering stability of vehicle running.
Typical suspension structures include elastic elements, guide mechanisms, shock absorbers, snubbers, sway bars, and the like. The elastic element is in the form of a steel plate spring, an air spring, a spiral spring, a torsion bar spring and the like, the modern car suspension mostly adopts the spiral spring, and the individual high-grade cars use the air springs. The suspension can be divided into an independent suspension and a non-independent suspension, and the torsion beam suspension with the spiral spring as shown in fig. 1 is a typical non-independent suspension, has low price and simple process, and is widely introduced to the rear suspension of a passenger car. This structure has the following disadvantages:
1. a special compression limiting block and a special stretching limiting block are arranged inside the rear shock absorber assembly 13 to limit the movement of the vehicle body, so that the rear shock absorber assembly 13 is complex in structure;
2. the production and assembly process of the spiral spring 14 is complex, a special device spring coiling machine is needed for production, and in final assembly, the upper spring pad 15 and the lower spring pad 16 are required to be installed and are independent parts, and the time is long;
3. the spiral spring 14 is in line contact with the upper spring pad 15 and the lower spring pad 16, so that the contact area is small, the local stress is large, the early damage of the upper spring pad 15 and the lower spring pad 16 is easy to cause, and the problems of abnormal sound, dislocation and the like are caused;
4. the spiral spring 14 is made of spring steel metal material, has heavy weight, invariable structural rigidity with a certain value, fixed response to vibration and flexible change of vibration.
Disclosure of Invention
An object of the present invention is to provide a leaf spring structure assembly and a torsion beam suspension structure having the same, which can solve the problems described in the background art.
In order to solve the technical problem, the leaf spring structure assembly comprises a leaf spring body, wherein the leaf spring body is formed by bending a leaf spring along the length direction for multiple times, the bending part is arc-shaped, connecting bolts are arranged at two ends of the leaf spring body, vibration isolating pads are arranged on the outer surfaces of two ends of the leaf spring body, and a damping buffer block is arranged on the inner side of each bending layer of the leaf spring body.
In above-mentioned leaf spring structure assembly, through bending the leaf spring and forming the elastic element main part, the shock attenuation buffer block that sets up between each bending layer can provide the compression spacing when the compression, bolt and other part fastening connection are passed through at the both ends of leaf spring body when tensile, self can provide tensile spacing, and then increase limit function for elastic element, and be equipped with the vibration isolator on each connecting surface, also improve elastic element's vibration isolation effect greatly, leaf spring body production simple process in addition, equipment input cost is low.
As an improvement of the leaf spring structure assembly, the included angles of the openings of all the bent layers of the leaf spring body are sequentially reduced from bottom to top. Make leaf spring structure assembly in whole elastic deformation within range, the rigidity of leaf spring body is crescent along with the increase of deflection, when the vibration to equidimension not, can make the deformation fluctuation of self less, guarantees better buffering connection effect.
As another improvement of the leaf spring structure assembly, each damping buffer block is fixedly bonded with the leaf spring body, each damping buffer block comprises a first buffer block arranged on a bending layer at two ends of the leaf spring body and a second buffer block arranged on a bending layer in the middle of the leaf spring body, the first buffer blocks and the connecting bolts are of an integrated structure, and the first buffer blocks are fixed on the inner surfaces of two ends of the leaf spring body. Design connecting bolt and first buffer block formula as an organic whole to along with first spacing bonding fix on the tip of leaf spring body, part quantity when reducing the installation improves efficiency.
For the aforesaid first buffer block with the technical scheme of connecting bolt formula structure as an organic whole, it is preferred be provided with the recess on the binding face of first buffer block, the tank bottom of recess be provided with the slotted hole of connecting bolt's nut looks adaptation, the inside of recess is provided with the welt, the welt with the recess can gomphosis each other, the welt the both ends head of leaf spring body all be provided with the bolt through-hole on the vibration isolation pad, first buffer block connecting bolt with the welt vulcanizes fixed as an organic whole. The nut of connecting bolt is embedded and fixed to the first buffer block, and along with the bonding of first buffer block is fixed, connecting bolt's screw rod is worn out from the both ends head inboard of leaf spring body, and increase threaded connection's lifting surface area improves joint strength, and design benefit has also improved the whole integrated level of leaf spring structure assembly.
In order to solve the technical problem, the torsion beam suspension structure utilizing the leaf spring structure assembly comprises a cross beam, wherein spring discs are arranged at two ends of the cross beam, a bolt mounting hole is formed in the middle of each spring disc, the rod part of each connecting bolt penetrates through the bolt mounting hole, and a fixing nut is arranged at the end part of each connecting bolt.
In the torsion beam suspension structure, the connecting bolt at the bottom end of the leaf spring structure assembly is fixed on a torsion beam suspension spring disc, so that a spiral spring fixed by using a spring lower pad in the prior art is replaced, the leaf spring structure assembly has the functions of compression and tension limiting, and can replace the functions of a compression limiting block and a tension limiting block in the rear shock absorber assembly, so that the rear shock absorber structure is simpler, and the quality stability of the rear shock absorber is improved. And the both ends face of leaf spring structure assembly laminates with automobile body erection support, torsion beam spring dish mutually respectively, and threaded fastening again increases the vibration that the vibration isolator was better kept apart on uneven road surface between the binding face to the spring upper padding, the lower structure of spring that has cancelled former suspension structure, make the part number reduce, production efficiency improves. In addition, the leaf spring structure assembly changes rigidity along with different deformation in the whole elastic deformation range, so that the change of the suspension stroke is small, and the riding is comfortable.
As an improvement of the torsion beam suspension structure, two groups of bolt mounting holes are formed in the middle of the spring disc, the two leaf spring structure assemblies are fixed on the spring disc through the fixing nuts, and the bending opening directions of the two leaf spring structure assemblies are perpendicular. The two leaf spring structure assemblies are vertically arranged on each spring disc, so that the rigidity of an elastic element between each spring disc and a vehicle body spring seat is doubled, more stable support is provided, and the lateral deflection resistance is stronger.
In conclusion, the leaf spring structure assembly and the torsion beam suspension structure have the advantages that the leaf spring body has the functions of stretching and compressing limiting, the integration level of parts is high, the installation time is short, the connection stress surface is large, and the torsion beam suspension structure is not easy to damage.
Drawings
In the drawings:
fig. 1 is a schematic view of a torsion beam suspension with a coil spring.
Fig. 2 is a schematic perspective view of the leaf spring structure assembly of the present invention.
Fig. 3 is a cross-sectional view of the leaf spring assembly of the present invention.
Fig. 4 is a schematic perspective view of a first buffer block according to the present invention.
Fig. 5 is a schematic view of a first buffer block of the present invention.
FIG. 6 is a cross-sectional view of a first buffer block according to the present invention.
Fig. 7 is a schematic structural view of the leaf spring body of the present invention.
FIG. 8 is a schematic view of the vibration isolator of the present invention.
FIG. 9 is a diagram illustrating a second buffer block structure according to the present invention.
Fig. 10 is a schematic view of a torsion beam suspension according to a first embodiment of the present invention.
Fig. 11 is a schematic view of a second torsion beam suspension according to the present invention.
Fig. 12 is a schematic view of the installation structure of the leaf spring structure assembly of the present invention.
In the figure: 1. a leaf spring body; 2. a connecting bolt; 3. a vibration isolator; 4. a shock-absorbing buffer block; 41. a first buffer block; 42. a second buffer block; 5. a groove; 6. a slot; 7. a liner plate; 8. a bolt through hole; 9. a cross beam; 10. a spring holder; 11. a bolt mounting hole; 12. fixing a nut; 13. a rear shock absorber assembly; 14. a coil spring; 15. an upper pad; 16. and (7) laying down the cushion.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.
Fig. 2 to 9 show a leaf spring structure assembly of the present invention. As shown in fig. 2, the leaf spring structure assembly comprises a leaf spring body 1, wherein the leaf spring body 1 is formed by bending a leaf spring along the length direction for multiple times, the bending part is arc-shaped, connecting bolts 2 are arranged at two ends of the leaf spring body 1, vibration isolating pads 3 are arranged on the outer surfaces of two ends of the leaf spring body 1, and a damping buffer block 4 is arranged on the inner side of each bending layer of the leaf spring body 1.
During the use, the leaf spring is buckled and is formed elastic element, and flat major structure can easily laminate with adapting unit, and then through connecting bolt 2 with the both ends difference fixed connection of leaf spring body 1, can enough provide tensile stress like this and can provide compressive stress again to when compressing, shock attenuation buffer block 4 can also provide the compression spacing, sets up vibration isolator 3 between the bolted connection face simultaneously, effectively improves buffering effect, increases the life of tie point.
Further, the opening included angles of the bending layers of the leaf spring body 1 are reduced from bottom to top in sequence. The leaf spring body 1 is in whole elastic deformation within range, and rigidity increases along with the deflection increase, makes suspension stroke change less all the time, has better damping performance.
The leaf spring body 1 is made of Fiber Reinforced Plastic (FRP), has high strength and light weight, is 50-60% lighter than the traditional metal spiral spring 14, and has obvious light weight effect. The cross section of the leaf spring body 1 is rectangular, and the four corners of the leaf spring are provided with rounding with the radius of 2-3 mm.
The vibration isolating pad 3 is made of rubber materials, the thickness of the vibration isolating pad is not more than 10mm, the vibration isolating pad 3 and the leaf spring body 1 are bonded, pressurized and fixed, the connection is firmer, and the rubber vibration isolating pad is adopted, so that a better vibration isolating effect is achieved.
As shown in fig. 3, each of the shock absorbing buffers 4 is bonded and pressed to the leaf spring body 1, and each of the shock absorbing buffers 4 includes a first buffer 41 disposed on a bent layer at both ends of the leaf spring body 1 and a second buffer 42 disposed on a bent layer in the middle of the leaf spring body 1. The first buffer block 41 and the connecting bolt 2 are of an integrated structure. The first buffer blocks 41 are fixed on the inner surfaces of the two ends of the leaf spring body 1, and the second buffer blocks 42 are uniformly fixed on the top plate or the bottom plate of each bending layer of the leaf spring body 1.
As shown in fig. 4-6, the nut of the connecting bolt 2 is inserted into the slot 6, and then the liner 7 is covered in the groove 5, and the first buffer block 41, the connecting bolt 2 and the liner 7 are vulcanized into a whole. As shown in fig. 7 and 8, the two ends of the leaf spring body 1 and the vibration isolator 3 are respectively provided with corresponding bolt through holes 8, the vulcanized structure is bonded and fixed on the inner side surfaces of the two ends of the leaf spring body 1 in a pressurized manner, and the rod part of the connecting bolt 2 penetrates out to the outer side for convenient connection and installation.
As shown in fig. 9, the second buffer block 42 is in the shape of a circular truncated cone, and the larger surface of the second buffer block 42 is fixed on the inner top surface of the bending layer of the leaf spring body 1, when the leaf spring body 1 is compressed, when the top plate and the bottom plate of the bending layer approach each other and the second buffer block 42 is pressed, the maximum compression amount is reached, corresponding to the shortest compression limit value of the elastic element.
As shown in fig. 10, the torsion beam suspension structure using the leaf spring structure assembly according to the first aspect of the present invention includes a cross beam 9, spring discs 10 are disposed at both ends of the cross beam 9, a bolt mounting hole 11 is disposed in the middle of the spring disc 10, a rod of the connecting bolt 2 penetrates through the bolt mounting hole 11, and a fixing nut 12 is disposed at an end of the connecting bolt.
In use, the coil spring 14 is replaced with the leaf spring structural assembly as compared to the prior art. As shown in fig. 12, the bottom end of the leaf spring body 1 passes through the bolt mounting hole 11 of the spring holder 10 by the connecting bolt 2 and is then fixed by the fixing nut 12, so that the installation is completed and the operation is simple. The fixing nut 12 is a welded nut, and the welding enables the fixing to be firmer.
Further, as shown in fig. 11, two sets of bolt mounting holes 11 are provided in the middle of the spring holder 10, and two leaf spring structure assemblies arranged perpendicular to each other are fixed on the spring holder 10 by fixing nuts 12. The rigidity of the elastic element between the spring disc and the vehicle body spring seat is doubled, more stable support is provided, and the lateral deviation resistance is stronger
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a leaf spring structure assembly, its characterized in that, includes leaf spring body (1), leaf spring body (1) is buckled along length direction by a leaf spring and is formed many times, and the department of bending is the arc, the both ends head of leaf spring body (1) all is provided with connecting bolt (2), the both ends surface of leaf spring body (1) all is provided with vibration isolator (3), every layer inboard of bending of leaf spring body (1) all is provided with shock attenuation buffer block (4).
2. A leaf spring structural assembly according to claim 1, wherein the included angles of the openings of the bent layers of the leaf spring body (1) decrease from bottom to top.
3. A leaf spring arrangement assembly according to claim 1, characterised in that the leaf spring body (1) is rectangular in cross-section and rounded at four corners.
4. A leaf spring structural assembly according to claim 1, characterised in that the vibration isolator (3) is made of rubber material and has a thickness not exceeding 10mm, and the vibration isolator (3) is adhesively fixed to the leaf spring body (1).
5. The leaf spring structure assembly according to claim 1, wherein each damping buffer block (4) is fixedly bonded with the leaf spring body (1), the damping buffer blocks (4) comprise first buffer blocks (41) arranged at two bending layers at two ends of the leaf spring body (1) and second buffer blocks (42) arranged at a middle bending layer of the leaf spring body (1), the first buffer blocks (41) and the connecting bolts (2) are of an integral structure, and the first buffer blocks (41) are fixed on inner surfaces of two ends of the leaf spring body (1).
6. A leaf spring structure assembly according to claim 5, characterized in that, be provided with recess (5) on the binding face of first buffer block (41), the tank bottom of recess (5) be provided with slotted hole (6) of the nut looks adaptation of connecting bolt (2), the inside of recess (5) is provided with welt (7), welt (7) with recess (5) can gomphosis each other, welt (7), the both ends head of leaf spring body (1), all be provided with bolt through-hole (8) on vibration isolator (3), first buffer block (41), connecting bolt (2) and welt (7) vulcanize fixed as an organic whole.
7. A leaf spring structural assembly according to claim 5, characterised in that the second bump stop (42) is truncated cone shaped and the larger face of the second bump stop (42) is fixed to the inner top face of the bent layer of the leaf spring body (1).
8. Torsion beam suspension construction utilising a leaf spring construction assembly according to any of claims 1-7, characterised in that it comprises a cross beam (9), that both ends of the cross beam (9) are provided with spring discs (10), that the middle part of the spring discs (10) is provided with bolt mounting holes (11), and that the bottom end of the connecting bolt (2) has its shank extending through the bolt mounting holes (11) and being fastened by means of fixing nuts (12).
9. The torsion beam suspension structure according to claim 8, wherein the fixing nut (12) is a weld nut.
10. The torsion beam suspension structure according to claim 8, wherein two sets of the bolt mounting holes (11) are formed in the middle of the spring plate (10), two leaf spring assemblies are fixed to the spring plate (10) through the fixing nuts (12), and the bending openings of the two leaf spring assemblies are perpendicular to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110641478.2A CN113464604B (en) | 2021-06-09 | 2021-06-09 | Leaf spring structure assembly and torsion beam suspension structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110641478.2A CN113464604B (en) | 2021-06-09 | 2021-06-09 | Leaf spring structure assembly and torsion beam suspension structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113464604A true CN113464604A (en) | 2021-10-01 |
| CN113464604B CN113464604B (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110641478.2A Active CN113464604B (en) | 2021-06-09 | 2021-06-09 | Leaf spring structure assembly and torsion beam suspension structure thereof |
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| Country | Link |
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| CN (1) | CN113464604B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000240718A (en) * | 1999-02-18 | 2000-09-05 | Mitsubishi Electric Corp | Vibration damping device for compressor |
| CN105751843A (en) * | 2016-04-26 | 2016-07-13 | 东风商用车有限公司 | Compound rigidity suspension system |
| CN109398015A (en) * | 2017-12-14 | 2019-03-01 | 刘守银 | Cross break plate spring assembly and independent suspension structure |
| CN209191631U (en) * | 2018-11-13 | 2019-08-02 | 广西电子高级技工学校 | A kind of rear suspension |
| CN111619299A (en) * | 2020-06-03 | 2020-09-04 | 中国第一汽车股份有限公司 | Suspension assembly on passenger car |
-
2021
- 2021-06-09 CN CN202110641478.2A patent/CN113464604B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000240718A (en) * | 1999-02-18 | 2000-09-05 | Mitsubishi Electric Corp | Vibration damping device for compressor |
| CN105751843A (en) * | 2016-04-26 | 2016-07-13 | 东风商用车有限公司 | Compound rigidity suspension system |
| CN109398015A (en) * | 2017-12-14 | 2019-03-01 | 刘守银 | Cross break plate spring assembly and independent suspension structure |
| CN209191631U (en) * | 2018-11-13 | 2019-08-02 | 广西电子高级技工学校 | A kind of rear suspension |
| CN111619299A (en) * | 2020-06-03 | 2020-09-04 | 中国第一汽车股份有限公司 | Suspension assembly on passenger car |
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| Publication number | Publication date |
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| CN113464604B (en) | 2022-04-29 |
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