CN203892439U

CN203892439U - Damper

Info

Publication number: CN203892439U
Application number: CN201420279029.3U
Authority: CN
Inventors: 杜信廷
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-05-28
Filing date: 2014-05-28
Publication date: 2014-10-22
Anticipated expiration: 2024-05-28

Abstract

The utility model relates to a damper. The damper comprises a cylinder, a piston rod, a first piston, a second piston, a clamping ring, a fixing ring and a strong magnet. According to the damper, the cylinder comprises an inner cylinder body and an outer cylinder body; due to the fact that screw holes are formed in the inner cylinder body, the double-piston technical structure is adopted and the fixing ring and the strong magnet are additionally arranged, the range of damping of the damper is internally adjusted before the damper is used so that a small-damping gear and a large-damping gear can be available when the damper is in use; adjustment can be conducted according to shaking of a vehicle body, and thus the driving comfort is improved; due to the fact that the two pistons and the fixing ring are arranged, it is guaranteed that the piston rod and the cylinder are coaxial all the time when the damper is in use, and the technical problem that the service life of a damper is short due to excessive local manual force caused by deviation of the piston rod is avoided.

Description

A kind of vibration damper

Technical field

The utility model relates to a kind of vibration damper, is specifically related to the vibration damper that a kind of adjustable damping life-span grows.

Background technique

Vibration damper is widely used in vehicle manufacture.The damping that vibration damper produces is too small, the less stable of vehicle, and the travelling comfort of the excessive vehicle of damping is poor.In actual production, according to different needs, need to produce the vibration damper of various different damping.Because inner core and the urceolus of vibration damper cylindrical shell are integrated, therefore, generally need many molds just can satisfy the demands, cause cost of production to increase.And vibration damper in actual use, be not in Vertical direction, to be stretched or compressed.When vibration damper is in the time being stretched or compressed sideling, because piston rod tilts, therefore the impact force of piston rod and cylindrical shell madial wall increases, thereby accelerates the wearing and tearing of vibration damper, has a strong impact on the working life of vibration damper.

Model utility content

For solving above technical problem, the purpose of this utility model is to provide a kind of adjustable damping, and the vibration damper grown of life-span.

The technical solution of the utility model is: cylindrical shell, described cylindrical shell comprises urceolus and inner core, described urceolus is cylindrical structure, bottom seal, described inner core is cylindrical structure, its bottom open-ended, and the upper end of described inner core offers some screws in vertical direction successively, described urceolus is connected by described screw with inner core, has formed oil storage cylinder and the inner casing of cylindrical shell;

Partition, is positioned at the below of described inner core screw bottom;

Piston rod, inserts from described cylindrical shell upper end portion, and described inner casing is divided into upper cylinder half and lower cylinder, and described piston rod can move up and down in the internal vertical direction of cylindrical shell;

First piston, is connected with the underpart of piston rod, and described first piston comprises rebound valve and flowing valve, and the diameter of described first piston is less than the diameter of inner casing;

The second piston, described the second piston is connected with piston rod, is positioned at the top of first piston, the diameter of described the second piston and the equal diameters of inner casing;

Snap ring, is connected with the sidewall of lower cylinder, the equal diameters of its diameter and piston;

Base, is positioned at lower cylinder bottom portion, and described base comprises compression valve and recuperation valve, and described base is connected with snap ring;

Retaining ring, is not offset its position for fixed piston rod.

Vibration damper described in the utility model can be adjusted voluntarily as required the damping scope of vibration damper before installation, and after installing, has and produce the gear of two dampings when violent with vibrations vibrations are slight, increases the travelling comfort of driving.By double-piston and retaining ring are set, ensure piston rod in use coaxial all the time with cylindrical shell, avoid piston rod occur be offset cause in local hand excessive, thereby the working life of vibration damper shorter technical problem.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model vibration damper.

Fig. 2 is P of the present utility model portion partial enlarged drawing.

Fig. 3 is the urceolus of the utility model cylindrical shell and the Placement schematic diagram of inner core.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the utility model is further described.

Please refer to Fig. 1, Fig. 1 is the structural representation of the utility model vibration damper.Described vibration damper comprise cylindrical shell 111, inner core, urceolus the first joint 1, the second joint 2, piston rod 3, dust-proof cover 4, piston 6, piston 23, snap ring 222, oil sealing 21, retaining ring 22, with base 13.

The inner core of described cylindrical shell 111 and urceolus have been connected to form oil storage cylinder 12 and inner casing 121, and the bottom of described oil storage cylinder 12 is communicated with the bottom of inner casing 121.

Described piston rod 3, the inside of inserting cylindrical shell 111 from the top portion of described cylindrical shell 111, described piston rod 3 can move up and down in the internal vertical direction of cylindrical shell 111.

Described piston 6 is connected with the underpart of piston rod 3, and described inner casing is divided into upper cylinder half 5 and lower cylinder 11.The left end of described piston 6, is provided with rebound valve 7.The right-hand member of described piston 6 is provided with flowing valve 8, and the diameter of described piston 6 is slightly less than the diameter of inner casing 121.

Described piston 23 is positioned at the top of piston rod 3, and the diameter of its diameter and inner casing 121 is suitable, and described piston 23 can slide in vertical direction together with piston rod 3.The distance of described piston 23 and piston 6 is greater than the length of described snap ring 222.

Described oil sealing 21 is fixed on the joint of cylindrical shell 111 and piston rod 3, and its effect makes to prevent fluid leakage.For fixed piston rod 3, ensure that piston rod 3 is coaxial all the time at the volley with cylindrical shell 111, this use is novel at the outer increase retaining ring 22 of oil sealing 21, for fixed piston rod 3.

The utility model is provided with a snap ring 222 in the bottom of described cylindrical shell 111, described snap ring 222 is connected with the sidewall of lower cylinder 11, the equal diameters of its diameter and piston 6;

Because the diameter of piston 6 is slightly less than the diameter of inner casing 121, easily cause piston rod to be offset, for solving this technical problem, vibration damper described in the utility model has added piston 23 above piston 6, the equal diameters of the diameter of described piston and inner casing 121.Fix by retaining ring 22 and the two point of piston 23, ensure that piston 6 of the present utility model ensures all the time axial coaxial with cylindrical shell 111 in movement process, avoid vibration damper in the time there is skew, piston rod is also offset, cause the inwall local pressure of cylindrical shell 111, cause shorter technical problem in working life.

Described base 13 is positioned at lower cylinder bottom portion, and described base is provided with compression valve 9 and recuperation valve 10, and described base 13 is connected with snap ring 222.

Described dust-proof cover 4 is connected with described piston rod 3 tops, covers the top of described cylindrical shell, prevents that dust from entering vibration damper inside from the top of cylindrical shell 111, affects the working life of vibration damper.

Described the first joint 1 is connected with the top of piston rod 3, and described vibration damper is connected with vehicle frame by the first joint 1.Described the second joint 2 is connected with the bottom of cylindrical shell 111, and described the second joint 2 is for connecting vehicle bridge.

The utility model vibration damper in use, the first joint 1 connecting vehicle frame of described vibration damper, the second joint 2 connects vehicle bridge.In the time that vibration damper is compressed, piston rod 3 is descending, and the volume of upper cylinder half 5 increases, and the volume of lower cylinder 11 reduces.Now, flowing valve 8 is opened, and the fluid of lower cylinder 11 enters upper cylinder half 5 by flowing valve 8; Meanwhile, compression valve 9 is opened, and fluid enters oil storage cylinder 12 by compression valve 9, damping function when described flowing valve 8 makes vibration damper produce compression with compression valve 9 to the throttling action of fluid.

In the time that vibration damper is stretched, piston rod 3 is up, and the volume of upper cylinder half 5 reduces, and the volume of lower cylinder 11 increases.Now, the fluid of upper cylinder half 5 enters lower cylinder 11 by rebound valve 6, opens recuperation valve 10 simultaneously, and fluid enters lower cylinder 11 by oil storage cylinder 12.Damping function when described rebound valve 6 makes vibration damper produce stretching exercise with recuperation valve 10 to the throttling action of fluid.

Especially, because the diameter of piston 6 is slightly less than the internal diameter of cylindrical shell 111, therefore, above snap ring 222, piston 6 is formed with passage 221 and passage 220 (please refer to Fig. 2 partial enlarged drawing) with cylindrical shell 111.

In the time that piston rod 3 moves above snap ring 222, the now effect of passage 221 is equivalent to rebound valve 7, and the effect of passage 220 is equivalent to flowing valve 8, and now, the damping function that vibration damper produces is less.

In the time that piston rod 3 enters snap ring 222 and once moves, due to the equal diameters of diameter and the piston 6 of snap ring 222, therefore passage 221 disappears with passage 220, and the damping that now vibration damper produces is larger.

Please continue to refer to Fig. 3, Fig. 3 is the urceolus of the utility model cylindrical shell and the Placement schematic diagram of inner core.The inner core 63 of vibration damper described in the utility model has some screws 61 in vertical direction, and described inner core 62 adopts the fastening pieces such as bolt to be connected by screw 62 with urceolus 64.Below screw 62 bottom, be also provided with partition 62, all screws 62 are cut off on fluid, can avoid adopting different screws to connect and bring the technical problem of leakage of oil.Adopt described structure, vibration damper described in the utility model is before using, by the artificial adjustment inner core 62 of some screws 62 energy and the difference of height of urceolus 64 bottoms, the i.e. size of passage between oil storage cylinder 12 and inner casing 121.Thus, in the time that exchange occurs fluid between oil storage cylinder and interior thick stick 121, flow velocity changes, and the damping that vibration damper produces is different.Therefore, this shock damper replaces the structure of traditional shock absorber urceolus and the processing of inner core one by the split-type structural of described urceolus and inner core, damping adjustment range is within the specific limits wider, can adapt to larger damping range of needs, the needed mould of manufacturer still less, thereby reduced cost of production.

To sum up, the scope of vibration damper described in the utility model capable of regulating damping before use, in use, has had in the time that vibrations are slightly violent with vibrations and has produced the gear of two dampings, increases the travelling comfort of driving.And by double-piston and retaining ring are set, ensure piston rod in use coaxial all the time with cylindrical shell, avoid piston rod occur be offset cause in local hand excessive, thereby the working life of vibration damper shorter technical problem.And in the bottom of cylindrical shell, strong magnet has been installed, the impurity in absorption fluid, makes the working life of vibration damper longer.

These are only mode of execution of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. a vibration damper, is characterized in that, described vibration damper comprises:

Cylindrical shell, described cylindrical shell comprises urceolus and inner core, described urceolus is cylindrical structure, bottom seal, described inner core is cylindrical structure, its bottom open-ended, and the upper end of described inner core offers some screws in vertical direction successively, described urceolus is connected by described screw with inner core, has formed oil storage cylinder and the inner casing of cylindrical shell;

Partition, is positioned at the below of described inner core screw bottom;

Retaining ring, is not offset its position for fixed piston rod.