CN202646506U

CN202646506U - Idle-stroke-prevention hydraulic damper

Info

Publication number: CN202646506U
Application number: CN 201220143626
Authority: CN
Inventors: 孔亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-09
Filing date: 2012-04-09
Publication date: 2013-01-02
Anticipated expiration: 2022-04-09

Abstract

The utility model discloses an idle-stroke-prevention hydraulic damper. A gas storage cover is arranged in the damper, the gas storage cover is matched with other parts to form a cavity, and the cavity can store some gas inside and outside a working cylinder under an oil liquid final balance face. Compared with a similar damper without the gas storage cover, gas stored in the cavity can exhaust part of oil liquid inside and outside the working cylinder under the oil liquid final balance face out of the cavity, and the oil liquid final balance face inside and outside the working cylinder rises to prevent idle stroke from generating.

Description

A kind of anti-idle running hydraulic damper

Technical field

The utility model relates to a kind of double barreled hydraulic damper, relates in particular to a kind of anti-idle running hydraulic damper.

Background technique

As everyone knows, traditional double barreled hydraulic damper (for example being applied in the dydraulic shock absorber on the vehicle suspension) leaves standstill a period of time starts working again, damping force when initial is less than normal value, connecting rod repeatedly back and forth after, damping force just can return to normal value, claims that usually this damping force working procedure less than normal is idle running when initial.

In conjunction with shown in Figure 1, in the ordinary course of things, with regard to the utility model for the double barreled damper with regard to, in its when normal operation, fluid has been full of clutch release slave cylinder 4, as shown in Figure 2.

But damper is through leaving standstill after a while, under the pressure-acting that the clutch release slave cylinder 4 inside and outside fluid discrepancy in elevation produce, clutch release slave cylinder 4 inside and outside fluid can flow until internal and external equilibrium, gas enters clutch release slave cylinder 4 tops by the gap between guider 3 and the connecting rod 1, make the top of clutch release slave cylinder 4 become cavity, as shown in Figure 3.

Under state shown in Figure 3, namely damper is when leaving standstill after a while started working again, because clutch release slave cylinder 4 inner fluids are not full, the damping force that connecting rod 1 produces back and forth the time will be less than normal value, connecting rod repeatedly back and forth after, gases in the clutch release slave cylinder 4 are constantly discharged, and damping force just can return to normal value until clutch release slave cylinder 4 is interior when being full of fluid fully, and this is so-called idle running.

Idle running not only makes the service behaviour of damper unstable, also can produce such as problems such as abnormal sounds under certain conditions, and therefore anti-idle running ability is attached great importance to as basic performance index investigating the damper quality.Therefore, be necessary to design a kind of new damper, to overcome above-mentioned problem.

The utility model improves on the basis of traditional double barreled damper original structure, to improve the anti-idle running ability of damper.Reasonably using the utility model can also effectively reduce oil filling amount in the situation that do not change the original performance of damper, to reach the purpose of saving and environmental protection.

Summary of the invention

The purpose of this utility model is to provide a kind of preferably damper of anti-idle running ability that has.In order to achieve this end, the technological scheme that the utility model adopts is:

A kind of anti-idle running hydraulic damper, its inside is provided with storage cover, storage cover cooperates the formation chamber with other parts (such as clutch release slave cylinder or urceolus etc.), this chamber can be with some atmosphere storage below the final equilibrium surface of fluid inside and outside the clutch release slave cylinder, be stored in some gases in the chamber and its position was in inside and outside the clutch release slave cylinder part fluid below the final equilibrium surface of fluid has originally discharged chamber, thereby the final equilibrium surface of the inside and outside fluid of clutch release slave cylinder is raise and suppressed the generation of idle running.

According to a preferred embodiment of the present utility model, the storage cover of described damper inside is installed on the clutch release slave cylinder.

According to another preferred embodiment of the present utility model, the storage cover of described damper inside is installed on the guider.

According to other preferred embodiments of the present utility model, the storage cover of described damper inside is installed on other outer positions of clutch release slave cylinder.

Than traditional double barreled hydraulic damper without storage cover, storage cover cooperates the chamber that forms that the final equilibrium surface of the inside and outside fluid of clutch release slave cylinder is raise with other parts, thereby suppressed the generation of idle running, this differs from the structural feature of conventional hydraulic damper for the utility model.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is internal structure schematic diagram of the present utility model.

Fig. 2 is the traditional schematic internal view of double barreled hydraulic damper when normal operation.

Fig. 3 is the traditional schematic internal view of double barreled hydraulic damper after leaving standstill a period of time.

Fig. 4 is the schematic internal view of a preferred embodiment of the present utility model when normal operation.

Fig. 5 is the schematic internal view of a preferred embodiment of the present utility model after leaving standstill a period of time.

Fig. 6 is the schematic internal view of another preferred embodiment of the present utility model when normal operation.

Fig. 7 is the schematic internal view of another preferred embodiment of the present utility model after leaving standstill a period of time.

Among Fig. 1: 1. connecting rod; 2. oil sealing; 3. guider; 4. clutch release slave cylinder; 5. piston assembly; 6. bottom valve assembly; 7. outer barrel component; 8. storage cover.

Embodiment

In Fig. 1, the utility model damper inside is provided with storage cover 8, and the outer wall of its inwall and clutch release slave cylinder 4 forms a downward opening chamber.Though storage cover 8 be with clutch release slave cylinder 4 in conjunction with (preferred embodiment shown in Fig. 4,5) or with guider 3 in conjunction with (another preferred embodiment shown in Fig. 6,7), the sealing configuration that its connecting part is all adopted interference fit or adopted other is to guarantee that the gas in the chamber can not be by upwards discharge of connecting part.

During the utility model damper normal operation (being that clutch release slave cylinder 4 inside are full of fluid), the liquid level of clutch release slave cylinder 4 outsides should fall back to the end opening following (shown in Fig. 4,6) of storage cover 8, also can Self-discharged even have fluid to enter in the chamber that purpose is assurance storage cover 8 and clutch release slave cylinder 4 to be formed.After damper leaves standstill a period of time, from the clutch release slave cylinder 4 interior fluid that reflux out in clutch release slave cylinder 4 outer continuous risings, owing to having gas in the chamber, fluid can not enter chamber and can only enter space by the chamber, thereby the final equilibrium surface that makes clutch release slave cylinder 4 inside and outside fluid raises when comparing without storage cover 8, thereby has suppressed the generation of idle running.

Claims

1. anti-idle running hydraulic damper, it is characterized in that: inside is provided with the storage cover that is installed between clutch release slave cylinder and the urceolus, and storage cover cooperates with other parts and forms chamber, and this chamber can be with some atmosphere storage below the final equilibrium surface of fluid inside and outside the clutch release slave cylinder.