CN208802045U - Bushings, Frame Components, Vehicles - Google Patents

Abstract

The utility model provides a bush, frame subassembly, vehicle. Wherein the bushing (1) has an inner tube (13), an elastomer (12) and an outer tube (11), wherein the inner tube (13) has an axial through-opening (131), wherein the inner tube (13) is connected to the outer tube (11) by means of the elastomer (12), characterized in that an outer tube projection is provided on the inner side of the outer tube (11), which is formed at least at the end of the outer tube (11) in the axial direction of the bushing (1).

Description

Bushing, chassis assembly, vehicle

Technical field

The utility model relates to bushing and carriage frame fields, in particular to a kind of bushing, have the bushing With the chassis assembly of the vehicle frame, the vehicle with the bushing and/or the chassis assembly.

Background technique

Bushing, particularly subframe bushing are essential components on passenger car platform, not with vehicle performance Disconnected to be promoted, the shock insulation shock-absorbing functions that subframe rubber bushing is played play an increasingly important role.Rubber bushing is mentioned The elastic characteristic and attenuation characteristic of confession can substantially reduce the noise and vibration of vehicle body, have become indispensable in vehicle performance A part.

Traditional rubber bushing generally uses the composite construction of inner tube, rubber and outer tube.As the day of this requirement drops in loss of weight Benefit improves, and outer tube is generally made of nylon plastic material and passes through rubber and inner tube is connected with each other.

For the bonding strength for ensuring rubber bushing Yu subframe sleeve, the mode of interference fit is generallyd use to ensure bushing Extrusion force request after press fitting is (after bushing press-mounting enters subframe, it is desirable to which it all not deviate under the effect of any external load. The performance requirement for embodying this is exactly extrusion pressure).However, in the actual production process, the stability of indentation and wanting for extrusion pressure Seeking Truth is contradictory.Very few interference fit will lead to that extrusion pressure is inadequate, and to will lead to press fitting difficult for excessive interference fit, makes It obtains bushing and is easily deformed cracking, so that the fatigue endurance performance to part can also have adverse effect on.Especially plastic outer tube In the case where, the characteristics of intensity is low, and size is due to Shooting Technique be easy fluctuation cause it is unstable so that this problem is especially It is prominent.

Utility model content

The purpose of this utility model is to provide a kind of bush structures, to overcome the cooperation of bushing magnitude of interference and press fitting stability Between contradiction.

In addition, the utility model also aims to solution or alleviates other technical problems existing in the prior art.

The utility model by provide a kind of bushing, the chassis assembly with the bushing and the vehicle frame, have it is described The vehicle of bushing and/or the chassis assembly solves the above problems, specifically, one side according to the present utility model, mentions For:

A kind of bushing, the bushing have inner tube, elastomer and outer tube, wherein and said inner tube has axially through aperture, Said inner tube passes through the elastomer and the outer tube assembly connection, wherein outer tube boss is equipped at the inside of the outer tube, At least construction is in the end along the bushing axial direction of the outer tube.

Optionally, a kind of embodiment according to the present utility model, the outer tube boss are arranged each other side-by-side or staggeredly On the inside.

Optionally, a kind of embodiment according to the present utility model, the outside of the outer tube also has outer tube recess portion, described Outer tube recess portion is arranged corresponding to the outer tube boss.

Optionally, a kind of embodiment according to the present utility model, the outer tube recess portion have been correspondingly formed at least one and have opened Window in the outside of the outer tube.

Optionally, a kind of embodiment according to the present utility model, the bushing also have inner tube coating member, said inner tube Coating member is arranged between said inner tube and the elastomer and coats the outer peripheral edge of said inner tube.

Optionally, a kind of embodiment according to the present utility model, partially place has said inner tube coating member therebetween Inner tube coating member boss, and said inner tube coating member boss is outwardly protruded along the radial direction of the bushing.

Optionally, a kind of embodiment according to the present utility model, axial direction of the outer tube boss in the bushing It sees and said inner tube coating member boss interlaced arrangement.

Optionally, a kind of embodiment according to the present utility model, the side of the elastomer and the outer tube boss and The structure of the outer tube recess portion matchingly designs.

Optionally, a kind of embodiment according to the present utility model, described elastomer itself has elastomer aperture, described Elastomer aperture is through-hole and/or the elastomer has elastomer groove, and the elastomer groove construction is in the elastomer The side edge along the bushing axial direction.

Optionally, a kind of embodiment according to the present utility model, said inner tube are adopted using metal and/or the outer tube Plastics are used using rubber and/or said inner tube coating member with plastics and/or the elastomer.

Another aspect according to the present utility model, the utility model provide a kind of chassis assembly, the chassis assembly tool There is vehicle frame, the vehicle frame has sleeve, wherein the chassis assembly also has any of the above-described kind of bushing, wherein the bushing warp By the outer tube and the sleeve connection.

It is according to the present utility model in another aspect, the utility model provides a kind of vehicle, wherein the vehicle have it is upper State any bushing and/or any of the above-described kind of chassis assembly.

Provided bushing, has the bushing and/or the vehicle at the chassis assembly with the bushing and the vehicle frame The usefulness of the vehicle of frame component includes: that bushing, particularly subframe bush structure are simple, can meet bushing performance Under the premise of, outer tube overall diameter fluctuation tendency is controlled by the structure design of outer tube: increasing the outer of interference fit effective coverage Pipe outside diameter is to improve press fitting intensity；Reduce assembly the initial segment and ending segment outer pipe outside diameter be conducive to bushing gently be pressed into and finally The size Control in press fitting stage.

Detailed description of the invention

With reference to attached drawing, the above-mentioned and other feature of the utility model be will become obvious, wherein

Fig. 1 and Fig. 2 respectively illustrates a kind of schematical cross-sectional view of embodiment of bushing according to the present utility model；

Fig. 3 and Fig. 4 respectively illustrates a kind of schematic diagram of embodiment of outer tube recess portion according to the present utility model；

Fig. 5 shows a kind of schematic diagram of embodiment of elastomer aperture according to the present utility model.

Specific embodiment

It is readily appreciated that, technical solution according to the present utility model, in the case where not changing the utility model in essence spirit, this field Those skilled in the art can propose the various structures mode and implementation that can be replaced mutually.Therefore, implement in detail below Mode and attached drawing are only the exemplary illustrations to the technical solution of the utility model, and are not to be construed as the complete of the utility model Portion or be considered as defines or limits technical solutions of the utility model.

It mentions in the present specification or up, down, left, right, before and after, front, the back side, top, the bottom that may mention etc. Positional terms are defined relative to each construction shown in the drawings, they are opposite concepts, and it is therefore possible to can root Correspondingly changed according to different location locating for it, different use states.So also should not be by these or others side Position term is construed to restricted term.In addition, term " first ", " second ", " third " etc. or similar statement be only used for description with Purpose is distinguished, the relative importance of corresponding component is not understood to indicate or imply.

With reference to Fig. 1 and Fig. 2, they respectively illustrate a kind of signal of embodiment of bushing 1 according to the present utility model The cross-sectional view of property.The bushing 1 has inner tube 13, elastomer 12 and outer tube 11, wherein said inner tube 13 has axially through opening Hole 131, said inner tube 13 pass through the elastomer 12 and 11 assembly connection of outer tube, wherein at the inside of the outer tube 11 Equipped with outer tube boss, at least construction is in the end along 1 axial direction of bushing of the outer tube 11.The outer tube as a result, Boss can also carry out structure at any part on the inside, at for example intermediate position simultaneously other than in the end It makes.It should be appreciated that the outer tube boss at these positions is not necessarily the same, for example in its specification, size, protrusion side To, convex shape etc..The outer tube boss can be arranged in each other side-by-side or staggeredly on the inside as a result, thus Such as it can be realized the effect for adjusting the thickness of the outer tube 11.Shown in figure to be, said inner tube 13 is led at its outer side It crosses the elastomer 12 to connect at the inside of the outer tube 11 with the outer tube 11, wherein the outer tube boss construction is in institute State outer tube 11 along 1 axial direction of bushing edge and along the radial direction of the bushing 1 it is inwardly projecting.As a result, The elastomer 12 can correspondingly be arranged at the position of the outer tube boss, for example with the outer tube boss The concave portion that profile matches, to accommodate the outer tube boss.In this regard, the side of the elastomer 12 can with it is described The structure of outer tube boss matchingly designs.

It should be noted that " pipe " word is construed broadly to mean, it not only include cylindric, hollow and elongated object Body can also cover non-cylindrical, such as prism-shaped and/or flat-shaped object, in addition, column also should not Seeking Truth it is proper Cylinder body shape, but can allow for being retrofited on its basis, such as chamfering, flange, aperture, bending, local size variation Etc. supplementary features.The perforation aperture 131 is moved towards along the axial direction of said inner tube 13.Vehicle frame lining is used as in the bushing 1 In the case where set, vehicle frame and vehicle body for being attached by the perforation aperture 131 with collective effects such as such as threaded fasteners. Said inner tube 13 is connect at the inner peripheral of the outer tube 11 with the outer tube 11 at its outer peripheral edge by the elastomer 12, It include the bushing 1 from-inner-to-outer as shown in Figure as a result, said inner tube 13, the elastomer 12 and the outer tube 11 And they are ring-type, are in hollow tubular.In addition, the elastomer 12 has also coated the lower edges of the outer tube 11, by , when being carried outward by axis, the elastomer 12 can provide buffering for the bushing 1 for this, be conducive to the fatigue of the bushing 1 Endurance quality and in vehicle performance.In addition, " boss " should also be as broadly understood, not only includes the step of protrusion, also can Cover the protrusion different from step shape.Similarly, the outer tube boss is inwardly projecting simultaneously along the radial direction of the bushing 1 The direction for not meaning that protrusion is strictly radial direction, but sees protrude along radial direction on the whole.In this regard, such as It is described in figure like that, the outer tube boss be rendered as in sectional view it is trapezoidal, the biggish bevel edge of gradient relatively in, gradient compared with Small or even radially side is relatively outer.It should be appreciated that the specific embodiment of outer tube boss can also be according to reality Situation and/or to the bushing 1 it is entire requirement, such as rigid requirements and retrofit.In addition, Fig. 1 be to the bushing 1 into Cross-sectional view made of 90 degree of corner cuttings of row, has e.g. cut out the section view of a quadrant using the center of the bushing 1 as origin Figure, thus seems that Fig. 1 left and right sides is asymmetrical.

In the implementations shown in the figures, the outer tube boss includes outer tube upper boss 111 and outer tube lower boss 112, they be respectively configured at the outer tube 11 along the lower edges of 1 axial direction of bushing and along the bushing 1 Radial direction it is inwardly projecting, thus the middle section of the outer tube 11 is relatively thin.In addition, the outer tube upper boss 111 Protrusion distance (that is their thickness) with the outer tube lower boss 112 along the radial direction of the bushing 1 is kept Unanimously, to guarantee symmetry.Boss is arranged simultaneously in both sides, can effectively increase axial rigidity, improves the fatigue of the bushing 1 Endurance quality.In addition, the outer tube boss and the outer tube boss are from the transition of the outer tube basal plane of Qi Chu protrusion (in figure The transition of namely internally positioned gradient biggish trapezoidal hypotenuse and vertical edge) gentle structure is used, to realize smoothly Load change, and optionally the gentle structure is also noted that for example in the size of 1 axial direction of bushing with following Said inner tube coating member boss 141 corresponding size it is corresponding.It should be appreciated that the embodiment of the outer tube boss can It retrofits according to the actual situation.

In a kind of optional embodiment, the outside of the outer tube 11 also has outer tube recess portion, the outer tube recess portion pair The setting of outer tube boss described in Ying Yu.Wherein, " correspondence " word is construed broadly to mean, such as can include that the outer tube recess portion is set Set within the outer tube boss or between embodiment, also can include the mixing, etc. of both embodiments, thus The effect for adjusting the thickness of the outer tube 11 is realized in various ways.In embodiment shown in figure, the outer tube boss And the part where the outer tube recess portion is roughly the same with the not average thickness of their part.In addition, the outer tube 11 The outside opposite with middle section is not provided with recess structure, so that the average thickness of entire outer tube 11 keeps roughly the same. The reason of this set is mainly to require to be determined by the Shooting Technique of the outer tube 11.Specifically, Shooting Technique requires The defects of part thickness is uniform as far as possible, not there is excessive variation, is otherwise easy to appear cracking, contracting hole, lack of fill.In addition, Also similarly with the outer tube boss, the outer tube recess portion includes outer tube upper recess 113 and outer tube lower recess 114.With reference to Fig. 3 and 4, they respectively illustrate a kind of schematic diagram of embodiment of outer tube recess portion according to the present utility model, it can be seen that It is that the outer tube recess portion is correspondingly formed at least one, in figure is the multiple outside for being opened in the outer tube 11, optionally peripheries Window at edge, they are rendered as honeycomb on the whole.And the outer tube recess portion is rendered as enclosed concave portion.It should manage Solution, the outer tube upper recess 113 and the outer tube lower recess 114 and its window can arrange and two-by-two in rows each other It is spaced apart, thus the outer tube recess portion has been accordingly divided into multiple sub- outer tube recess portions.It should be appreciated that the outer tube recess portion, Outer tube upper recess 113 described herein and the outer tube lower recess 114 and its window can also have different height each other Degree or depth or the peripherally length in direction are also not necessarily intended to arrangement in a row, such as they can be staggered cloth in the height direction It sets or with interval different from each other (such as peripherally the interval in direction, along interval of short transverse etc.), or even quantitatively Can also change, specifically using which kind of embodiment can according to the actual situation depending on, the vehicle frame for example to be connected with Structure of vehicle body, and/or the requirement to the rigidity on different directions etc..In addition, the concrete shape of window is also not necessarily limited to rectangle, Also can be retrofited according to above-mentioned actual conditions, such as chamfering, be configured to other polygonal shapes, circle, ellipse, when It so also can be different from each other.The benefit of enclosed outer tube recess portion is to try to increase effective contact area of bushing outer tube, improves The stability of part indentation Extrusion.Similarly, the side of the elastomer 12 can also be with the structure of the outer tube recess portion Matchingly design.

In embodiment shown in the figure, the bushing 1 also has inner tube coating member 14, said inner tube coating member 14 It is arranged between said inner tube 13 and the elastomer 12 and coats the outer peripheral edge of said inner tube 13.Said inner tube packet as a result, Covering part 14 also is annular, is in hollow tubular, and said inner tube 13 connects via said inner tube coating member 14 and the elastomer 12 Connect (optionally said inner tube 13 and said inner tube coating member 14 link into an integrated entity), so again via the elastomer 12 with it is described Outer tube 11 connects.By the setting of said inner tube coating member 14 allow the operator to have biggish design freedom with In the rigidity and load change of the entire bushing 1 of adjustment in three directions.

About 14 specific embodiment of said inner tube coating member, said inner tube coating member 14 has at part therebetween Inner tube coating member boss 141, and said inner tube coating member boss 141 is outwardly protruded along the radial direction of the bushing 1.By This, the elastomer 12 being connected with said inner tube coating member 14 can match at said inner tube coating member boss 141 The elastomer recess that ground is constructed, for example matched with the profile with said inner tube coating member boss 141, to accommodate State inner tube coating member boss 141.It should be appreciated that the outer tube boss or the outer tube upper boss 111 and the outer tube lower part Boss 112 it is positioned opposite to each other with said inner tube coating member boss 141 and protrude position it is also different.However similarly It is that specific protruding parts can retrofit and/or the quantity of these boss is also able to carry out variation, such as described outer Multiple convex shapes, the also different outer tube upper boss of degree are arranged in 11 top of pipe, and in the outer of lower disposed different number Pipe lower boss, said inner tube coating member boss 141 are also similarly capable of with different number and convex shape, degree difference, To adjust the load characteristic of entire bushing 1 in various ways.In addition, optional and show, said inner tube coating member Boss 141 is smooth transition, that is to say, that the protrusion contour curve of said inner tube coating member boss 141 is smooth, thus Make load change of the bushing 1 when being pressed into sleeve it is gentle (bushing 1 with its outer tube 11 and sleeve cooperation, can Selection of land is interference fitted, so that generating elastic pressure between the piece surface after assembly, to obtain the connection of fastening, has structure letter List can bear the advantages of biggish axial force, torque and dynamic loading).In terms of the embodiment of these boss also it is optional simultaneously And show, the outer tube boss the axial direction of the bushing 1 see with said inner tube coating member boss 141 interlock cloth It sets.Similarly, in the case where multiple boss, these boss can whole interlaced arrangements or a part of arrangement interlaced with each other, The characteristics of interlaced arrangement, is to enable to preload to be applied on said inner tube coating member boss 141, to guarantee the elastomer 12 rigidity and intensity when by outer load.

Referring to figs. 2 and 5, they respectively illustrate a kind of signal of embodiment of bushing 1 according to the present utility model A kind of schematic diagram of embodiment of the cross-sectional view and elastomer aperture 121 according to the present utility model of property.As seen from the figure, institute Elastomer 12 itself is stated with elastomer aperture 121, the elastomer aperture 121 is through-hole, and the elastomer 12 has Elastomer groove 122, the construction of elastomer groove 122 is in the side along 1 axial direction of bushing of the elastomer 12 Place.Wherein, " elastomer 12 itself has elastomer aperture 121 " indicates that the elastomer aperture 121 does not refer in by being in The empty cricoid elastomer 12 is formed by the intermediate throughholes surrounded in other words, and refer to the elastomer 12 itself or It says possessed by ontology relative to the additional through-hole of above-mentioned intermediate throughholes.For example, the elastomer aperture 121 can be the bullet A part of property 12 main reinforcement of body.In addition, the elastomer groove 122 is also understood as being by the axial direction of the elastomer 12 The lip relative to each other of side is formed by.The lip on one side extends to the elastomer 12 or said inner tube coating member 14 Top and the bottom, the lip of another side extend to the top and the bottom of the inner or outer side of the outer tube 11.Similarly, it should be understood that described Elastomer aperture 121 and the elastomer groove 122 be dedicated to adjusting the bushing 1 three directions, namely XYZ to it is rigid Rigidity ratio on degree and these directions.In a kind of optional embodiment, the opening direction of the elastomer aperture 121 It is consistent with vehicle front-rear direction, this can be effectively reduced bushing rigidity, improves vehicle in comfort in the front-back direction.And it can Choosing, the direction of the elastomer groove 122 is consistent with vehicle left and right directions, is designed, is met by the structure of this groove The rigidity requirement of vehicle left and right directions is alleviated because of stiffness variation caused by aperture.It should be appreciated that their configuration (quantity, shape The parameters such as shape, size, position) it can be retrofited according to different rigidity/rigidity proportion requirement, it is also not excluded for described The case where elastomer aperture 121 is not through-hole, can also be provided with certainly multiple has that different from each other or part is identical matches The elastomer aperture set or elastomer groove.In addition, by can also be seen that in Fig. 1, it is following in the outer tube 11 of the bushing 1 Collar flange is configured at edge, the collar flange is outwardly protruded along the radial direction of the bushing 1.The collar flange is used for It is positioned when installing the bushing 1 with described sleeve pipe.It should be appreciated that the collar flange is exemplary, positioning method It is without being limited thereto.

In terms of the material of each component, optionally, said inner tube 13 uses metal, and the outer tube 11 uses plastics, described Elastomer 12 is using rubber or natural rubber (rubber is that spring-like is the same, is capable of providing elasticity and decaying), said inner tube packet Part 14 is covered using plastics.It should be appreciated that " use " word not only refers to that its signified component can be made of relevant material, It also contemplated the component and can be made of the multiple material containing the material, such as composite material.In this case, in described Pipe 13 can be linked into an integrated entity with said inner tube coating member 14 by plastic, and the said inner tube 13 of metal can be added by cold-drawn Work is made, and the cold-drawn refers to reach certain shape and certain mechanical property for metal material, at material Drawing is carried out under normal temperature condition, has the advantages that dimensional accuracy height and surface smoothness are good compared to thermoforming.Described outer In the case that pipe 11 has plastics, optionally, the outer tube 11 has nylon plastic(s), and increases glass fibre as auxiliary material (the plastic nylon material that optional or PA66 adds glass), that is to say, that thus the outer tube 11 of plastics is by nylon and glass Hollow cylindrical structure is made in glass fiber injection.Injection molding is a kind of method of industrial products production moulding, have yield it is big, at This low advantage.In this regard, the bushing 1 is in processing, the said inner tube 13 of metal and the outer tube of plastics 11 are fixed together by the vulcanization of the elastomer 12 with rubber, so that 1 lighter in weight of the bushing, has saved cost simultaneously Improve integral strength, vulcanization also known as crosslinking, curing.The cross-linking aids such as vulcanizing agent and promotor are added in rubber, certain Temperature, under pressure condition, linear macromolecule is made to be changed into the process of tridimensional network.Rubber after over cure changes The defects of intrinsic intensity is low, elasticity is small, chill hot sticky, easy to aging, and wearability, anti-swelling, heat resistance etc. have It is obviously improved, expands application range.

It should be noted that vulcanization can have an impact the size of plastic outer tube 11, and the utility model is just utilized This point.Specifically, due to consideration that the size distortion of 11 sulfuration process of plastic outer tube, the biggish region of average thickness are inside It shrinks, reduces the outer pipe outside diameter of about 1 two sides of bushing suitably.Wherein, the diminution of downside size is conducive to the bushing Stability and centering size when 1 initial press fitting process, and then be conducive to the gently indentation of bushing 1；And the contracting of upside size It is small, cause the magnitude of interference for being pressed final stage to reduce, press fitting is outer to be carried to reduce.In press fitting final stage, improve described outer Pipe 11 is because of stress release space caused by interference deformation.Further, since the size in view of 11 sulfuration process of plastic outer tube becomes Shape, the lesser region of average thickness expand outwardly, and increase the outer pipe outside diameter among the bushing 1 suitably.Wherein, increase is outer Diameter size improves value of interference fit, guarantees during press-loading device most stable of middle section, the bushing 1 and connected set Cylinder precision-fit, improves the press fitting intensity of the bushing 1.It can be seen that the utility model is due to consideration that plastic outer tube 11 The size distortion of sulfuration process reduces the outer pipe outside diameter of upper and lower two sides suitably, and the outer pipe outside diameter among the bushing 1 is appropriate Increase, guarantees the bushing 1 and connected sleeve precision-fit, the press fitting intensity of the bushing 1 is improved, by vulcanizing Journey and structure Design guidance outer diameter tolerance change as required.According to test data, 80mm diameter bushing, be preferred for In the case where the bushing of subframe, extrusion pressure can be improved 5%, and stability can be improved 30%.

In terms of the size design of each part, illustratively, 112 thickness of outer tube lower boss is not less than 10mm, The depth of the outer tube lower recess 114 is not less than 5mm.It should be appreciated that thickness and width are along 1 radial direction of bushing The size of measurement is only made to distinguish to be used herein.111 thickness of outer tube upper boss is not less than 8mm, and on the outer tube The depth of portion's recess portion 113 is not less than 4mm.It can be seen that the size of these recess portions and boss can choose different, it is special It is not that the outer tube lower boss 112, the outer tube lower recess 114 are than on the outer tube upper boss 111, the outer tube The reason of size of portion's recess portion 113 is big, this set is that the bushing 1 is by related with car weight pre- downwards when in use It carries, upside stress can be bigger, and thus the relevant boss in upside, recess portion are significantly arranged.Optionally, the outer tube recess portion It can be configured with chamfering, the radius of the chamfering is not less than 1mm, this can well as seen from Figure 4, that is to say, that described Chamfering is rendered as the chamfering of radial direction of the window along the bushing 1 on 11 outer peripheral edge of outer tube, certain polygon Window while while between chamfering be also feasible.In addition, said inner tube coating member boss 141 optionally possesses rounded corner 1411, to improve the fatigue behaviour of rubber spring, that is elastomer 12；The gentle structure among outer tube Thickness is not more than 4mm.It should be appreciated that the configuration of the size of above-mentioned each part, shape feature (such as chamfering etc.) can be according to institute It states rigidity/rigidity ratio actual requirement of bushing 1 and retrofits.

It should be understood that the bushing 1 of the utility model can be installed in carriage frame, that is to say, that the utility model A kind of chassis assembly is further related to, the chassis assembly has vehicle frame, and the vehicle frame has sleeve, wherein the chassis assembly is also With any of the above-described kind of bushing 1, wherein the bushing 1 is via the outer tube 11 and the sleeve connection.For example, by the lining Set 1 is arranged on vehicle body, is pressed in the sleeve of vehicle frame, so that vehicle frame is connected with vehicle body by the bushing 1.It needs to illustrate It is that the vehicle frame not only includes subframe, also can for example covers other vehicle frames, such as unit frame.Furthermore the bushing 1 And/or the chassis assembly can be installed on various vehicles, including gasoline car, diesel vehicle, car, lorry, car, electric car Etc..Therefore, the theme of the utility model, which also aims to, protects each of the bushing 1 and/or chassis assembly for being installed with the utility model Kind vehicle.

In conclusion the bushing of the utility model can overcome bushing magnitude of interference to cooperate the lance between press fitting stability Shield；Structure is simple, the fluctuation of outer tube overall diameter can be controlled by the structure design of outer tube under the premise of meeting bushing performance Trend: increasing the outer pipe outside diameter of interference fit effective coverage, improves press fitting intensity；Reduce the outer tube of assembly the initial segment and ending segment Outer diameter is conducive to bushing and is gently pressed into, and the size Control in final press fitting stage.

It should be understood that all above preferred embodiments are all illustrative and not restrictive, those skilled in the art The various remodeling or deformation that member makes particular embodiments described above under the design of the utility model all should be practical at this In novel legal scope.

Claims (12)

1. A bushing (1), the bushing (1) having an inner tube (13), an elastomer (12) and an outer tube (11), wherein the inner tube (13) has an axial through opening A hole (131), the inner tube (13) is assembled and connected to the outer tube (11) through the elastic body (12), characterized in that an outer tube protrusion is provided on the inner side of the outer tube (11) A table, which is constructed at least at the end of the outer tube (11) in the axial direction of the bushing (1). 2. The bushing (1) according to claim 1, characterized in that the outer tube bosses are arranged on the inner side beside each other or staggered. 3 . The bushing ( 1 ) according to claim 1 , characterized in that, the outer side of the outer tube ( 11 ) further has an outer tube recess, and the outer tube recess is provided corresponding to the outer tube boss. 4 . 4 . The bushing ( 1 ) according to claim 3 , wherein the outer tube recess is correspondingly formed with at least one window opened at the outer side of the outer tube ( 11 ). 5 . 5. The bushing (1) according to claim 1, characterized in that, the bushing (1) further has an inner tube covering member (14), and the inner tube covering member (14) is arranged at the between the inner tube (13) and the elastic body (12) and cover the outer periphery of the inner tube (13). 6. The bushing (1) according to claim 5, characterized in that the inner tube covering (14) has an inner tube covering boss (141 ) at a middle portion thereof, and the inner tube covering (14) The tube cover boss (141) protrudes outward in the radial direction of the bushing (1). 7 . The bushing ( 1 ) according to claim 6 , wherein the outer tube boss is viewed from the axial direction of the bushing ( 1 ) with the inner tube covering member boss ( 141 ). 8 . ) are staggered. 8 . The bushing ( 1 ) according to claim 3 , wherein the side portion of the elastic body ( 12 ) is designed to match the structures of the outer tube boss and the outer tube recess. 9 . 9 . The bushing ( 1 ) according to claim 1 , wherein the elastomer ( 12 ) itself has an elastomer opening ( 121 ), and the elastomer opening ( 121 ) is a through hole, and 9 . /or the elastomer ( 12 ) has an elastomer groove ( 122 ) formed on the side of the elastomer ( 12 ) in the axial direction of the bush ( 1 ) edge. 10. The bushing (1) according to claim 5, characterized in that the inner tube (13) is made of metal, and/or the outer tube (11) is made of plastic, and/or the elastomer ( 12) Use rubber, and/or the inner tube covering (14) use plastic. 11. A frame assembly, the frame assembly having a frame, the frame having a sleeve, characterized in that the frame assembly further has the lining according to any one of claims 1-10 A sleeve (1), wherein the bushing (1) is connected to the sleeve via the outer tube (11). 12. A vehicle, characterized in that it has a bushing (1) according to any one of claims 1-10 and/or a frame assembly according to claim 11.