CN204592112U - Back axle mass bumper - Google Patents
Back axle mass bumper Download PDFInfo
- Publication number
- CN204592112U CN204592112U CN201520106495.6U CN201520106495U CN204592112U CN 204592112 U CN204592112 U CN 204592112U CN 201520106495 U CN201520106495 U CN 201520106495U CN 204592112 U CN204592112 U CN 204592112U
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- China
- Prior art keywords
- riser
- mass inertia
- inertia block
- rubber
- mass
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- Vehicle Body Suspensions (AREA)
Abstract
A kind of back axle mass bumper, comprise screw rod, mass inertia block, absorber rubber, mounting bracket, mounting bracket is made up of base plate and riser, riser is provided with spacing hole, mass inertia block is arranged at riser both sides respectively, each mass inertia block is provided with center hole, and mass inertia block is connected by absorber rubber sulfuration with between riser; Screw rod is inserted in pad, nut, yielding rubber cover, this screw rod is through the spacing hole of the center hole of mass inertia block, absorber rubber, riser, and make yielding rubber cover be positioned at the spacing hole of riser, by pad and nut, two mass inertia blocks, two absorber rubbers and riser are locked together, and the lateral compression of adjustable absorber rubber or tensile buckling amount.The utility model can reduce vibration noise, and can carry out rigidity after rubber curing forming and freely adjust, Safety performance is good, can improve car load NVH performance, shortens the R&D cycle of vehicle or vibration damper product, is easy to apply.
Description
Technical field
The utility model relates to a kind of vibration damper, particularly relates to a kind of back axle mass bumper.
Background technique
Along with vehicle ride comfort and noise requirements improve constantly, solve the main research that automobile back driving axle vibration noise problem has become domestic automobile industry NVH engineer.Back driving axle produces the reason of vibration noise to be had multiple, and wherein main reason is because the vibration of engine crankshaft unbalance inertia force is transmitted by transmission shaft torsional oscillation, back axle or near to vibrate with Huang Xia mechanism, tire etc. and produce coupling resonance.Under existence conditions, installation quality vibration damper on back driving axle reduces or eliminates back axle vibration noise less expensive and effective means.
natural frequency and the vehicle rear axle rumble spectrum of design and Mass Control vibration damper match, the principle utilizing excitation force and inertial force reaction to offset is to reduce amplitude, and meanwhile, rubber produces interior frictional heat due to vibration deformation, vibrational energy is decayed, reaches and reduce vibration noise object.By vibration damper natural frequency theoretical formula:
(f: natural frequency, k: absorber rubber rigidity, m: mass inertia block quality), in mass inertia block quality owing to being subject to assembly space, the condition restrictions such as working life and oscillating body gross mass immobilize in situation, control the rigidity of absorber rubber, just can reach the object of Mass Control vibration damper natural frequency, according to dynamic absorber principle, when mass bumper natural frequency is identical with excited frequency or close, vibration damper just can reach best reduction vibration noise effect, this just requires that the rigidity of absorber rubber must control in less scope, but, existing vibration damper is in manufacturing process, because rubber product manufacture is as refining glue, the impact that the manufacturing processs such as sulfuration are deteriorated, manufactured by absorber rubber body rigidity out cannot 100% to meet the demands, up-to-standard rate is lower, and reject cannot carry out doing over again reprocessing, the waste caused is larger.
Simultaneously, existing mass bumper mainly adopts the basic structure principle of mass inertia block+absorber rubber+mounting bracket, the spacing setting that little consideration is applicable to, cause in actual use, particularly vehicle is in anxious acceleration and deceleration, emergency braking or vibration larger time, mass inertia block make under effect of inertia absorber rubber easily produce ultralimit distortion tear, under extreme conditions, mass inertia block unfettered deviate from and injure mounting bracket, surrounding tubular members, even drop to ground or be transmitted axle, the parts such as tire hit and fly and injure pedestrian and other vehicle below, there is potential safety hazard.
Publication number is that the Chinese invention patent of CN103615489A proposes a kind of mass bumper with elastic spacing structure, it increases elastic spacing by or periphery position upper and lower at mass block and arranges, mass block restriction is moved within the specific limits, mass block under limited conditions can be avoided to fly out.But this organization plan also has obvious deficiency, one is that structure is more complicated, component and the manufacturing process of needs are relatively many, need the operations such as several rubber parts sulfuration respectively (as above, lower limit block rubber, the sulfuration of work block rubber), welding (being connected with mounting base as installed side plate), fastening assembling, two is that after sulfuration, rubber stiffness cannot adjust, and reject effectively can not be done over again and be reprocessed, and 100% cannot meet natural frequency requirement, cost is higher, has promoted the use of narrow limitation.
Summary of the invention
The technical problems to be solved in the utility model is: provide one can carry out rigidity after rubber curing forming and freely adjust, and has again when can prevent mass inertia block in vehicle travels and comes off or hit the back axle mass bumper flown out.
The technological scheme solved the problems of the technologies described above is: a kind of back axle mass bumper, comprise screw rod, mass inertia block, absorber rubber, for supporting absorber rubber and the mounting bracket with automobile axle assembly connection,
Described mounting bracket is made up of base plate and riser, and riser is provided with spacing hole;
Described mass inertia block has two, is symmetricly set in the riser both sides of mounting bracket respectively, and each mass inertia block is provided with center hole, and is connected by described absorber rubber sulfuration between mass inertia block and the riser of mounting bracket; The cavity being convenient to nut screwing clamping operation is provided with in the middle part of absorber rubber;
Described screw rod is inserted in multiple pad, multiple nut, yielding rubber cover, this screw rod is through the spacing hole of the center hole of mass inertia block, absorber rubber, riser, and make yielding rubber cover be positioned at the spacing hole of riser, pad and nut is made to be positioned at the both sides of each mass inertia block, by being positioned at pad inside mass inertia block and two mass inertia blocks, two absorber rubbers and riser are locked together by nut, regulate lateral compression or the tensile buckling amount of absorber rubber by being positioned at pad outside mass inertia block and nut.
Further technological scheme of the present utility model is: described mounting bracket is provided with pilot hole on base plate, and the junction surface of riser both sides and absorber rubber is provided with auxiliary hole.
Described mass inertia block is cuboid or square body or cylindrical body.
The described external diameter of yielding rubber cover and the gap of spacing hole internal diameter are 2.5mm ~ 5mm.
Owing to adopting said structure, the back axle mass bumper of the utility model compared with prior art, has following beneficial effect:
1. can reach and reduce vibration noise object:
Due to the utility model comprise screw rod, mass inertia block, absorber rubber, for supporting absorber rubber and the mounting bracket with automobile axle assembly connection, by the setting rigidity of absorber rubber and the quality of mass inertia block, the vibration frequency that the natural frequency value of mass bumper and back axle can be made to produce noise close to or consistent, the reverse inertial force of mass inertia block when resonating is utilized to offset vibration force, rubber produces frictional heat with attenuation vibration energy when vibration deformation simultaneously, thus reaches the object reducing vibration noise.
2. can carry out rigidity after rubber curing forming freely to adjust:
Because the utility model is inserted in multiple pad on screw rod, multiple nut, yielding rubber cover, this screw rod is through the center hole of mass inertia block, absorber rubber, the spacing hole of riser, and make yielding rubber cover be positioned at the spacing hole of riser, pad and nut is made to be positioned at the both sides of each mass inertia block, by being positioned at pad inside mass inertia block and nut by two mass inertia blocks, two absorber rubbers and riser are locked together, lateral compression or the tensile buckling amount of absorber rubber is regulated by being positioned at pad outside mass inertia block and nut, thus can improve or reduce absorber rubber and the perpendicular directional stiffness of adjustable deformation direction, reach the object of adjustment natural frequency, guarantee that the final energy 100% of mass bumper natural frequency value meets code requirement, reduce reject loss.
3. Safety performance is good:
The utility model constitutes an elastic spacing structure by the spacing hole on mounting bracket riser, the screw rod be fastenedly connected with two mass inertia blocks, yielding rubber cover, thus mass inertia block can be limited in yielding rubber cover external diameter and spacing hole internal diameter interstice coverage in move, avoid absorber rubber and produce the amount of deformation exceeding designing requirement, even if when serious, absorber rubber produces unexpected damage, mass inertia block also can not come off or be hit and fly out, stop potential safety hazard, its Safety performance is better.
4. can improve car load NVH performance:
Because the utility model is provided with yielding rubber cover in the riser spacing hole of mounting bracket, the buffering of being overlapped by this yielding rubber and damping effect can also reduce the spacing noise contacting or collide generation, reach the object improving car load NVH performance.
5. can shorten the R&D cycle of vehicle or vibration damper product:
The utility model freely adjusts owing to can carry out rigidity after rubber curing forming, make automobile main frame maker or vibration damper manufacturing enterprise when the test of product exemplar and checking, by lasting adjustment and the NVH dependence test of mass bumper rubber stiffness, the optimum matching scheme of rumble spectrum can be found out within very short time, thus greatly shorten the R&D cycle of vehicle or vibration damper product.
6. structure is simple, cost is low, up-to-standard rate is high, long service life, be easy to apply:
Of the present utility model relatively simple for structure, cost is lower, and spacingly arranges structure owing to adopting rigidity to be in harmonious proportion, and also has that up-to-standard rate is high, the feature of long service life, is easy to apply.
7. using scope is wide:
The utility model is spacing because employing rigidity can be in harmonious proportion arranges structure, except the vibration and noise reducing coupling that can be applicable to automobile axle, the vibration and noise reducing coupling of the association areas such as each position of automobile and lathe, train, engineering machinery, track traffic, building can also be applied to, expand using scope further.
Below, in conjunction with the accompanying drawings and embodiments the technical characteristics of the back axle mass bumper of the utility model is further described.
Accompanying drawing explanation
Fig. 1 ~ Fig. 3: the structural representation of the back axle mass bumper of the utility model:
Fig. 1: plan view, the plan view of Fig. 2: Fig. 1, the left view of Fig. 3: Fig. 1.
Fig. 4: the structural representation of mounting bracket described in embodiment one.
In above-mentioned figure:
1-screw rod; 2-pad; 3-mass inertia block; 4-absorber rubber;
5-mounting bracket; 51-base plate, 511-pilot hole,
52-riser, 521-spacing hole, 522-auxiliary hole;
6-nut; 7-yielding rubber cover.
Embodiment
embodiment one:
A kind of back axle mass bumper, shown in Fig. 1 ~ Fig. 3, comprise screw rod 1, there is the mass inertia block 3 that can produce inertia displacement of enough weight, absorber rubber 4, for supporting absorber rubber 4 and the mounting bracket 5 with automobile axle assembly connection,
Described mounting bracket 5 is made up of base plate 51 and riser 52, and riser 52 is provided with spacing hole 521;
Described mass inertia block 3 has two, be symmetricly set in riser 52 both sides of mounting bracket 5 respectively, this mass inertia block 3 is cuboid, each mass inertia block 3 is provided with center hole, internal diameter and the screw rod 1 of center hole match, and are connected by described absorber rubber 4 sulfuration between mass inertia block 3 and the riser 52 of mounting bracket 5; Absorber rubber 4 cross section is also rectangular, is provided with the cavity being convenient to nut screwing clamping operation in the middle part of this absorber rubber 4.
Described screw rod 1 is inserted in 4 pads 2, 3 nuts 6, yielding rubber cover 7, this screw rod 1 is through the center hole of mass inertia block 3, absorber rubber 4, the spacing hole 521 of riser 52, and make yielding rubber cover 7 be positioned at the spacing hole 521 of riser 52, pad 2 and nut 6 is made to be positioned at the both sides of each mass inertia block 3, by being positioned at pad 2 inside mass inertia block 3 and nut 6 by two mass inertia blocks 3, two absorber rubbers 4 and riser 52 are locked together, lateral compression or the tensile buckling amount of absorber rubber 4 is regulated by being positioned at pad 2 outside mass inertia block 3 and nut 6, to reach the object of adjustment absorber rubber 4 rigidity.
Described mounting bracket 5 is provided with pilot hole 511 on base plate 51, auxiliary hole 522(is provided with see Fig. 4) at the junction surface of riser 52 both sides and absorber rubber 4, auxiliary hole 522 is provided with 4, by each 2 settings in the both sides of spacing hole 521, the bonding by Vulcanization intensity of absorber rubber 4 and mounting bracket 5 so that rubber hot vulcanization is flowed, improved.
The described yielding rubber cover external diameter of 7 and the gap of spacing hole 521 internal diameter are determined according to the work shift amount of mass inertia block 3 and the effective deformation amount of absorber rubber 4, are generally 2.5mm ~ 5mm.
One as the present embodiment one converts, and described mass inertia block 3 also can be square body or cylindrical body; Correspondingly, the cross section of absorber rubber 4 also can be square or circular.
As another conversion of the present embodiment one, under assurance function and working life prerequisite, the quantity of auxiliary hole 522 can also arrange more or less.
Claims (4)
1. a back axle mass bumper, is characterized in that: comprise screw rod (1), mass inertia block (3), absorber rubber (4), for supporting absorber rubber (4) and the mounting bracket (5) with automobile axle assembly connection,
Described mounting bracket (5) is made up of base plate (51) and riser (52), and riser (52) is provided with spacing hole (521);
Described mass inertia block (3) has two, be symmetricly set in riser (52) both sides of mounting bracket (5) respectively, each mass inertia block (3) is provided with center hole, and is connected by described absorber rubber (4) sulfuration between mass inertia block (3) and the riser (52) of mounting bracket (5); Absorber rubber (4) middle part is provided with the cavity being convenient to nut screwing clamping operation;
Described screw rod (1) is inserted in multiple pad (2), multiple nut (6), yielding rubber cover (7), this screw rod (1) is through the center hole of mass inertia block (3), absorber rubber (4), the spacing hole (521) of riser (52), and make yielding rubber cover (7) be positioned at the spacing hole (521) of riser (52), pad (2) and nut (6) is made to be positioned at the both sides of each mass inertia block (3), by be positioned at mass inertia block (3) inner side pad (2) and nut (6) by two mass inertia blocks (3), two absorber rubbers (4) and riser (52) are locked together, lateral compression or the tensile buckling amount of absorber rubber (4) is regulated by the pad (2) and nut (6) being positioned at mass inertia block (3) outside.
2. back axle mass bumper according to claim 1, it is characterized in that: described mounting bracket (5) is provided with pilot hole (511) on base plate (51), the junction surface of riser (52) both sides and absorber rubber (4) is provided with auxiliary hole (522).
3. back axle mass bumper according to claim 1, is characterized in that: described mass inertia block (3) is cuboid or square body or cylindrical body.
4. the back axle mass bumper according to claim 1 or 2 or 3, is characterized in that: the external diameter of described yielding rubber cover (7) and the gap of spacing hole (521) internal diameter are 2.5mm ~ 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520106495.6U CN204592112U (en) | 2015-02-13 | 2015-02-13 | Back axle mass bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520106495.6U CN204592112U (en) | 2015-02-13 | 2015-02-13 | Back axle mass bumper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204592112U true CN204592112U (en) | 2015-08-26 |
Family
ID=53928266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520106495.6U Expired - Fee Related CN204592112U (en) | 2015-02-13 | 2015-02-13 | Back axle mass bumper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204592112U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696407A (en) * | 2015-02-13 | 2015-06-10 | 柳州金鸿橡塑有限公司 | Rear axle mass shock absorber |
| CN105114500A (en) * | 2015-08-27 | 2015-12-02 | 航天材料及工艺研究所 | Low-temperature-resistant durable vibration rubber shock absorber |
| CN114263704A (en) * | 2021-12-28 | 2022-04-01 | 浙江极氪智能科技有限公司 | Vibration absorbing device, panoramic sunroof and automobile |
| CN114962546A (en) * | 2022-06-09 | 2022-08-30 | 北京汽车集团越野车有限公司 | Frequency-adjustable rear axle vertical vibration absorption assembly, automobile, method and device |
-
2015
- 2015-02-13 CN CN201520106495.6U patent/CN204592112U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696407A (en) * | 2015-02-13 | 2015-06-10 | 柳州金鸿橡塑有限公司 | Rear axle mass shock absorber |
| CN105114500A (en) * | 2015-08-27 | 2015-12-02 | 航天材料及工艺研究所 | Low-temperature-resistant durable vibration rubber shock absorber |
| CN114263704A (en) * | 2021-12-28 | 2022-04-01 | 浙江极氪智能科技有限公司 | Vibration absorbing device, panoramic sunroof and automobile |
| CN114962546A (en) * | 2022-06-09 | 2022-08-30 | 北京汽车集团越野车有限公司 | Frequency-adjustable rear axle vertical vibration absorption assembly, automobile, method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20170213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |