CN209510982U - A kind of compound buffer stopper of novel elastic - Google Patents

Abstract

The utility model discloses a kind of compound buffer stopper of novel elastic, is related to the technical field of automobile parts, comprising: buffer stopper, the buffer stopper is rotary structure, and the buffer stopper is hollow structure；Two resilient inserts, two resilient inserts include the first resilient insert and the second resilient insert, first resilient insert and second resilient insert are rotary structure, the top of the buffer stopper is arranged in first resilient insert, and the middle part of the buffer stopper is arranged in second resilient insert.The utility model passes through the external elastic material for increasing different densities in buffer stopper, such as thermoplastic polyurethane elastomer or casting type polyurethane elastomer etc., for adjusting the rigidity held before, during and after buffer stopper curve, under the premise of guaranteeing intensity and the service life of buffer stopper, the NVH performance and rigidity for improving buffer stopper significantly cooperate the problem of cracking.

Description

A kind of compound buffer stopper of novel elastic

Technical field

The utility model relates to the technical field of automobile parts more particularly to the technical fields of automotive buffer block.

Background technique

Automotive buffer block is the device that can limit suspension maximum deformation quantity.It can mitigate axle to vehicle frame (or vehicle body) Direct collision, prevent elastic element from generating excessive deformation.The buffer stopper of Modern Car mostly uses greatly poromeric polyurethane material It is made.With the raising that automobile industry suspension and driver and passenger require NVH (noise, vibration and sound vibration roughness), respectively Requirement of the kind vehicle for buffer stopper product NVH and comfort is also correspondingly higher and higher.A kind of buffering block of material is usually only capable of A kind of specific performance curve is obtained, BH (Block heigh kills a residual altitude) has a specific range, usually It is 65%~80%.In this way, some special requirements cannot be realized, for example soft leading portion rigidity and rear end is required quickly to stop Position rigidity.Widespread practice is assembly rigid plastics reinforcing ring to improve the curve of product at present, but would generally be reduced so slow Rush the service life of block product.

Utility model content

In view of the above problems, a kind of NVH performance for being intended to improve buffer stopper is now provided, and intensity is high, the service life is long The compound buffer stopper of novel elastic.

Specific technical solution is as follows:

A kind of compound buffer stopper of novel elastic, wherein include:

Buffer stopper, the buffer stopper is rotary structure, and the buffer stopper is hollow structure；

Two resilient inserts, two resilient inserts include the first resilient insert and the second resilient insert, first elasticity Inserts and second resilient insert are rotary structure, and the top of the buffer stopper is arranged in first resilient insert, The middle part of the buffer stopper is arranged in second resilient insert.

A kind of above-mentioned compound buffer stopper of novel elastic, wherein the material of the buffer stopper is polyurathamc, described the The material of one resilient insert and second resilient insert is thermoplastic polyurethane elastomer (TPU) or casting type polyurethane bullet Property body (CPU).

The above-mentioned compound buffer stopper of a kind of novel elastic, wherein first resilient insert is interior embedded in the buffer stopper Surface.

A kind of above-mentioned compound buffer stopper of novel elastic, wherein the top and bottom annular array of second resilient insert point Several through-holes of two circles are furnished with, the buffer stopper forms interpenetrating structure through several through-holes and second resilient insert.

The above-mentioned compound buffer stopper of a kind of novel elastic, wherein the outer surface of second resilient insert is exposed to described Buffer stopper.

The good effect that above-mentioned technical proposal has compared with prior art is:

1. the utility model passes through the external elastic material for increasing some different densities in buffer stopper, such as thermoplastic poly Urethane elastomer or casting type polyurethane elastomer etc. are guaranteeing to delay for adjusting the rigidity held before, during and after buffer stopper curve It rushes the intensity of block and under the premise of the service life, improves the NVH performance of buffer stopper significantly.

2. being flexibly connected between the buffer stopper and resilient insert of the utility model using bullet, unlike rigid connection can be to buffering Block generates cutting equivalent damage, therefore significant the compression service life for improving buffer stopper.

3. the utility model bullet flexible material (such as: thermoplastic polyurethane elastomer or casting type polyurethane elastomer) can For each position of buffer stopper, bullet flexible material is placed on to the different location of buffer stopper, different-stiffness section can be obtained Performance curve, and elasticity is higher, therefore more easily can design and adjust the rigidity of buffer stopper, obtains preferably design Matching.

4. the utility model is since the material of buffer stopper and the material of resilient insert are elastic material, only rigidity is not Together, more preferable is restored for the elasticity of compression, unlike hard reinforcing ring etc. can bring rigid collision, made so as to preferably reduce The comfort level of occupant can be improved significantly since buffer stopper is used for suspension with noise.

It, can also be with 5. the material of the utility model resilient insert can be fitted together by way of assembly with buffer stopper It is put into mold by penetrating structure and buffer stopper directly vulcanizes together, in order to process, greatly reduce production Cost can simultaneously be effectively avoids the damage to buffer stopper.

Detailed description of the invention

Fig. 1 is the positive cross-sectional view of the buffer stopper of the utility model embodiment.

Fig. 2 is the sectional view along A-A of the second resilient insert of the buffer stopper of Fig. 1.

Fig. 3 is the pouring procedure schematic diagram of the utility model embodiment.

Fig. 4 is the static curve figure of the buffer stopper of the utility model embodiment manufacture.

In attached drawing: 1, buffer stopper；2, the first resilient insert；3, the second resilient insert；4, mold；5, through-hole.

Specific embodiment

The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model It limits.

Fig. 1 is the positive cross-sectional view of the buffer stopper of the utility model embodiment, shown in Figure 1.

A kind of compound buffer stopper of novel elastic, wherein include:

Buffer stopper 1, buffer stopper 1 is rotary structure, and buffer stopper 1 is hollow structure.

Two resilient inserts, two resilient inserts include the first resilient insert 2 and the second resilient insert 3,2 He of the first resilient insert Second resilient insert 3 is rotary structure, and the top of buffer stopper 1 is arranged in the first resilient insert 2, and the second resilient insert 3 is set It sets at the middle part of buffer stopper 1.

Continuing with shown in Figure 1, in a kind of preferred embodiment, the material of buffer stopper 1 is polyurathamc, first The material of resilient insert 2 and the second resilient insert 3 is thermoplastic polyurethane elastomer (TPU) or casting type polyurethane elastomer (CPU), the material of buffer stopper 1, the first resilient insert 2 and the second resilient insert 3 is elastic material, extensive for the elasticity of compression It is multiple more preferable, it unlike hard reinforcing ring etc. can bring rigid collision, therefore can preferably reduce using noise, because buffer stopper is used In suspension, it is possible to improve the comfort level of occupant significantly.

Further, in a kind of preferred embodiment, the density of buffer stopper 1 and first the 2, second elasticity of resilient insert are embedding The density of part 3 is different, and the change of density can bring different rigidity, by adjusting density, adjustable 1 curve of buffer stopper Before, during and after the rigidity held, for improving the NVH performance of buffer stopper 1.

Further, in a kind of preferred embodiment, the first resilient insert 2 and the setting of the second resilient insert 3 are slow The different location of block 1 is rushed, the performance curve of different-stiffness section can be obtained, and elasticity is higher, therefore can be more easily The rigidity of design and adjustment buffer stopper 1 obtains preferably design matching.

In a kind of preferred embodiment, the outer surface of the second resilient insert 3 is exposed to buffer stopper 1.

Further, Fig. 2 is the sectional view along A-A of the second resilient insert of the buffer stopper of Fig. 1, shown in Figure 2, In a kind of preferred embodiment, the A-A of the second resilient insert 3 to section in a ring, the top and bottom circular array of the second resilient insert 3 Column distribution has several through-holes 5 of two circles, and through-hole 5 is round hole, and buffer stopper 1 forms interpenetrating through several through-holes 5 and the second resilient insert 3 Structure, the purpose that through-hole 5 is opened up in the second resilient insert 3 is in order not to separate buffer stopper 1.

Further, in a kind of preferred embodiment, shape, quantity and distribution mode of through-hole 5 etc. are unrestricted, Through-hole 5 can be designed as to the shapes such as square hole, quantity can only have a circle, and distribution is also possible to uneven distribution.

In a kind of preferred embodiment, the first resilient insert 2 is embedded in the inner surface of buffer stopper 1.

Further, Fig. 3 be the utility model embodiment pouring procedure schematic diagram, it is shown in Figure 3, one kind compared with In good embodiment, resilient insert can be combined using different combinations with buffer stopper 1, and the first resilient insert 2 uses Be assembly mode, the second resilient insert 3 is put into mold 4 using the mode of casting by penetrating structure, is eased up The directly vulcanization together of block 1 is rushed, in order to process, production cost is greatly reduced, can simultaneously be effectively avoids to slow Rush the damage of block 1.

Further, in a kind of preferred embodiment, buffer stopper it is whole it is specific the production method is as follows:

1. it is shown in Figure 1, the first resilient insert 2 and the second resilient insert 3 are processed respectively；

2. it is shown in Figure 3, the second resilient insert 2 is put into mold 4, it is former that polyurethane is added from the upper end of mold 4 Material, urethane raw foaming, rises from through-hole 5 and the edge of the second resilient insert 2, while forming buffer stopper 1, with the second bullet Property inserts 3 is formed together an entirety；

3. the first resilient insert 2 is assembled on buffer stopper 1 by press fitting, it is whole to be combined into buffer stopper shown in FIG. 1.

In a kind of preferred embodiment, bullet is all made of between buffer stopper 1 and the first resilient insert 2, the second resilient insert 3 Flexible connection, unlike rigid connection can generate cutting equivalent damage, therefore significant the compression for improving buffer stopper 1 to buffer stopper 1 Service life.

Fig. 4 is the static curve figure of the buffer stopper of the utility model embodiment manufacture, as shown in figure 4, a kind of preferable In embodiment, wherein leading portion is curvilinear contact section, usually the straightway of relatively low stiffness ride；Middle section is knee of curve section, is led to It is often rolling controlling curve section；Latter end is that curve kills rigidity section, usually rapid increase straightway.

The foregoing is merely the utility model preferred embodiment, be not intended to limit the embodiments of the present invention and Protection scope should can appreciate that all in the utility model specification and diagram to those skilled in the art Hold made equivalent replacement and obviously change obtained scheme, the protection model of the utility model should all be included in In enclosing.

Claims (5)

1. a kind of compound buffer stopper of novel elastic characterized by comprising

Buffer stopper (1), the buffer stopper (1) is rotary structure, and the buffer stopper (1) is hollow structure；

Two resilient inserts, two resilient inserts include the first resilient insert (2) and the second resilient insert (3), first bullet Property inserts (2) and second resilient insert (3) be rotary structure, first resilient insert (2) setting is described slow Rush the top of block (1), middle part of the second resilient insert (3) setting in the buffer stopper (1).

2. the compound buffer stopper of a kind of novel elastic according to claim 1, which is characterized in that

The material of the buffer stopper (1) is polyurathamc, first resilient insert (2) and second resilient insert (3) Material be thermoplastic polyurethane elastomer or casting type polyurethane elastomer.

3. the compound buffer stopper of a kind of novel elastic according to claim 1, it is characterised in that

First resilient insert (2) is embedded in the inner surface of the buffer stopper (1).

4. the compound buffer stopper of a kind of novel elastic according to claim 1, which is characterized in that

Several through-holes of two circles (5), buffer stopper (1) warp is distributed in the top and bottom annular array of second resilient insert (3) Several through-holes (5) and second resilient insert (3) form interpenetrating structure.

5. the compound buffer stopper of a kind of novel elastic according to claim 1, which is characterized in that

The outer surface of second resilient insert (3) is exposed to the buffer stopper (1).