A kind of vibration damper
Technical field
The utility model relates to vapour and to rub accessory technical field, is specially a kind of vibration damper.
Background technique
Concussion when vibration damper rebounds after being mainly used to suppress spring shock-absorbing and the impact from road surface.Through uneven road surface, although shock-absorbing spring can filter the vibrations on road surface, spring self also has to-and-fro motion, and vibration damper is just used to suppress this spring to jump.Vibration damper is too soft, and vehicle body will vertical bounce, and vibration damper will bring too large resistance too firmly, hinders spring normally to work.About in the retrofit process of suspension system, hard vibration damper will be arranged in pairs or groups mutually with hard spring, and the hardness of spring is closely bound up with car weight, and therefore heavier car generally adopts harder vibration damper.
Traditional shock absorber needs the elastic force overcoming spring in the process of assembling, could be stuck between the first positioning seat and the second positioning seat by the two ends of spring, and assembling difficulty, reduces working efficiency.Meanwhile, the internal diameter of the both ends of the spring in traditional vibration damper is smaller, and two ends are toward on middle direction, and internal diameter is increasing, and such design can make spring easily radial deformation occur when stressed.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of assembling simple vibration damper.
For achieving the above object, the utility model provides following technological scheme: a kind of vibration damper, comprise piston assembly, piston assembly comprises piston rod, one end of described piston assembly is connected with the first positioning seat, the other end is connected with the second positioning seat, described piston assembly is provided with the projection of several runway shapes, the first described positioning seat is provided with several protruding adaptive locating slots, described first positioning seat is provided with the first bumping post of cylindrical shape, described second positioning seat is provided with the second bumping post of cylindrical shape, described piston assembly outer cover is provided with spring, conflict with the first positioning seat and be connected in one end of spring, the other end is conflicted with the second positioning seat and is connected, the second segment spring that spring comprises first paragraph spring and is connected with first paragraph spring, the pitch of first paragraph spring and the pitch of second segment spring are than being 1.1-1.4, described first paragraph spring is wait diameter spring, first paragraph spring comprises first lap steel wire and the second circle steel wire, first lap steel wire comprises head end head, head end head and second encloses steel wire weld, second segment spring comprises the 3rd circle steel wire and the 4th circle steel wire, second segment spring is Spring capable of diameter varying, and become large gradually from the 4th circle steel wire toward internal diameter the direction of the 3rd circle steel wire, 4th circle steel wire comprises end head, end head and the 3rd encloses steel wire weld.
Further, described fixed protruding number is two, and lays respectively at the opposite side of piston assembly.
Further, described piston rod slidably connects cushion pad, the stressed pad that described cushion pad comprises cylindrical shape and the round table-like loose power pad be connected with stressed pad, the radius of described loose power pad is identical with the radius of stressed pad bottom surface, and the loose radius of power pad upper bottom surface and the radii ratio of loose power pad bottom surface are 3:4.
Contrast the deficiencies in the prior art, the beneficial effect that the technological scheme that the utility model provides is brought: 1. cushion pad of the present utility model effectively can play the effect of buffering, prevent piston assembly to be subject to irreversible infringement simultaneously, when being subject to very large external force, cushion pad is close to the cylinder body of piston assembly, round table-like loose power pad can be partially submerged in cylinder body, play buffering, the effect of loose power, prevent spring from occurring irreversible infringement, and the internal diameter of cylinder body is between the upper bottom surface diameter and bottom surface diameter of loose power pad, prevent whole cushion pad from entering in cylinder body.2. in assembly process of the present utility model, first positioning seat is enclosed within piston assembly outside, projection is made to block locating slot, at cover upper spring, spring is conflicted with the first locating column be connected, and one end that the first bumping post stretches into spring is inner, prevent spring from radially sliding, finally and the second positioning seat is conflicted with spring and is connected on the piston rod by fixing for the second positioning seat, and second blocks the other end inside stretching into spring, prevent spring from radially sliding, in whole assembly process, do not need the elastic force overcoming spring, assembling simply improves working efficiency.3. the spring of the present utility model second segment spring that comprises first paragraph spring and be connected with first paragraph spring, the pitch of first paragraph spring and the pitch ratio of second segment spring are set to 1.1-1.4, and the phenomenon of radial deformation occurs effectively to prevent second segment spring from occurring when bearing external force.4. head end head and second are enclosed steel wire weld by the utility model, and end head and the 3rd encloses steel wire weld, make head end steel wire and end steel wire stressed more even.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of spring.
Fig. 3 is the G portion enlarged diagram of Fig. 1.
Fig. 4 is the structural representation of cushion pad.
Embodiment
With reference to Fig. 1-Fig. 4, the utility model is described further.
A kind of vibration damper, comprise piston assembly, piston assembly comprises piston rod 11, one end of described piston assembly is connected with the first positioning seat 12, the other end is connected with the second positioning seat 13, described piston assembly is provided with the projection 14 of several runway shapes, the first described positioning seat 12 is provided with the locating slot 121 of several protruding 14 adaptations, described first positioning seat 12 is provided with the first bumping post 121 of cylindrical shape, described second positioning seat 13 is provided with the second bumping post 131 of cylindrical shape, described piston assembly outer cover is provided with spring 2, conflict with the first positioning seat 12 and be connected in one end of spring 2, the other end is conflicted with the second positioning seat 13 and is connected, the second segment spring 22 that spring 2 comprises first paragraph spring 21 and is connected with first paragraph spring 21, the pitch of first paragraph spring 21 and the pitch of second segment spring 22 are than being 1.1-1.4, described first paragraph spring 21 is for waiting diameter spring, first paragraph spring 21 comprises first lap steel wire 211 and the second circle steel wire 212, first lap steel wire 211 comprises head end head 2111, head end head 2111 and second encloses steel wire 212 and welds, second segment spring 22 comprises the 3rd circle steel wire 221 and the 4th circle steel wire 222, second segment spring 22 is Spring capable of diameter varying, and become large gradually from the 4th circle steel wire 222 toward internal diameter the direction of the 3rd circle steel wire 221, 4th circle steel wire 222 comprises end head 2221, end head 2221 and the 3rd encloses steel wire 221 and welds.
In assembly process, first positioning seat 12 is enclosed within piston assembly outside, protruding 14 are made to block locating slot 121, at cover upper spring 2, spring 2 is conflicted with the first locating column be connected, and one end that the first bumping post 121 stretches into spring 2 is inner, prevent spring 2 from radially sliding, finally the second positioning seat 13 is fixed on piston rod 11, and the second positioning seat 13 is conflicted with spring 2 and is connected, the other end that second bumping post 131 stretches into spring 2 is inner, prevent spring 2 from radially sliding, in whole assembly process, do not need the elastic force overcoming spring 2, assembling simply improves working efficiency.
The second segment spring 21 that spring 2 comprises first paragraph spring 21 and is connected with first paragraph spring 21, the pitch of first paragraph spring 21 and the pitch ratio of second segment spring 22 are set to 1.1-1.4, and the phenomenon of radial deformation occurs effectively to prevent second segment spring 22 from occurring when bearing external force.
Head end head 2111 and second is enclosed steel wire 212 weld, end head 2221 and the 3rd encloses steel wire 221 and welds, make head end steel wire and end steel wire stressed more even.
Further, the described fixed number of protruding 14 is two, and lays respectively at the opposite side of piston assembly.
The number of protruding 14 is two, and the number of protruding 14 is identical with the number of locating slot 121, plays the effect of evenly location, meanwhile, also can according to actual conditions, the number of protruding 14 is set to four, and the number of locating slot 121 is also four.
Further, described piston rod 11 slidably connects cushion pad 3, the stressed pad 31 that described cushion pad 3 comprises cylindrical shape and the round table-like loose power pad 32 be connected with stressed pad 31, the radius of described loose power pad 32 is identical with the radius of stressed pad 31 bottom surface, and the loose radius of power pad 32 upper bottom surface and the radii ratio of loose power pad 32 bottom surface are 3:4.
When vibration damper is subject to powerful external force, cushion pad 3 effectively can play the effect of buffering, prevent piston assembly to be subject to irreversible infringement simultaneously, when being subject to very large external force, cushion pad 3 is close to the cylinder body of piston assembly, round table-like loose power pad 32 can be partially submerged in cylinder body, play the effect of buffering, loose power, prevent spring 2 from occurring irreversible infringement, and the internal diameter of cylinder body is between the upper bottom surface diameter and bottom surface diameter of loose power pad 32, prevent whole cushion pad 3 from entering in cylinder body.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, those skilled in the art carries out common change and replaces should being included in protection domain of the present utility model within the scope of technical solutions of the utility model.