CN204300218U - A kind of vibration damper with multiple dust-proof effect - Google Patents

Abstract

The utility model relates to a shock absorber with multiple dustproof functions, comprising an inner cylinder, an outer cylinder, a connecting rod, a piston valve, a bottom valve and an oil seal guide assembly, the oil seal guide assembly includes an oil seal seat and a guide, The outer wall of the top of the outer cylinder is provided with a dust cover, the upper end of the dust cover is provided with a buffer block sleeved on the connecting rod, the upper end of the buffer block is provided with a limit nut, and the upper end of the oil seal seat is extended with a A cover adapted to the top opening of the outer cylinder, the cover is fitted on the top opening of the outer cylinder, an annular gasket is provided between the buffer block and the limit nut, and the outer edge of the annular gasket faces An annular barrel is extended downward, and the end of the annular barrel away from the annular gasket is connected to the outer wall of the outer cylinder. The utility model has multiple dust-proof effects, can greatly improve the dust-proof effect of the shock absorber, and can well avoid the phenomenon that impurities enter the inner and outer cylinders and make the oil turbid under long-term use, so that the oil can be continuously maintained. Excellent shock absorption.

Description

A shock absorber with multiple dustproof functions

technical field

The utility model relates to the technical field of automobile shock absorbers, in particular to a shock absorber with multiple dustproof functions.

Background technique

In order to improve the stability of the car and make it more comfortable, a shock absorber is usually installed in the car suspension. Its working principle is that when the relative movement occurs between the frame and the axle, the piston in the shock absorber Moving up and down, the oil in the shock absorber cavity will repeatedly flow from one cavity to another cavity from different gaps. At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form a damping effect on the vibration. Force, the energy of the car vibration is converted into heat energy of the oil, and then the shock absorber absorbs and transforms it into the air.

The current shock absorber usually includes an inner cylinder, an outer cylinder, a connecting rod, a piston valve, a bottom valve and an oil seal guide assembly. The shock absorber composed of these parts can achieve a certain shock absorption effect, and the existing shock absorber In order to prevent a large amount of impurities from entering the inner and outer cylinders, a dust cover is usually placed on the outer wall of the top of the outer cylinder. However, the dustproof effect is still poor. After long-term use, impurities will enter the interior of the shock absorber and make the oil turbid. , thus affecting the shock absorption effect of the shock absorber, and even the phenomenon of shock absorption failure.

Utility model content

The technical problem to be solved by the utility model is to provide a shock absorber with multiple dust-proof effects, which solves the problem that the dust-proof effect of the existing shock absorber is poor, which easily affects the shock-absorbing effect of the shock absorber, and even occurs Insufficiency of shock failure.

In order to solve the technical problems existing in the background technology, the utility model adopts the following technical solutions: a shock absorber with multiple dustproof functions, including an inner cylinder, an outer cylinder, a connecting rod, a piston valve, a bottom valve and an oil seal guide Assembly, the connecting rod is set in the inner cylinder, the piston valve is sleeved on the bottom of the connecting rod, the bottom valve is fixed on the bottom of the inner cylinder, the oil seal guide assembly includes an oil seal seat and a guide, the The oil seal seat and the guide are respectively sleeved on the connecting rod, the outer wall of the top of the outer cylinder is provided with a dust cover, the upper end of the dust cover is provided with a buffer block which is sleeved on the connecting rod, and the upper end of the buffer block is provided There is a stop nut, the upper end of the oil seal seat is extended with a cover that fits the top opening of the outer cylinder, and the cover fits on the top opening of the outer cylinder, and the buffer block and the stop nut are provided There is an annular gasket, and the outer edge of the annular gasket extends downwards to form an annular cylinder, and the end of the annular cylinder away from the annular gasket is connected to the outer wall of the outer cylinder.

By adopting the above-mentioned technical scheme, the utility model extends the sealing cover on the oil seal seat and the annular cylinder on the annular gasket, so that the shock absorber has multiple dust-proof functions and can greatly improve the shock absorber performance. The excellent dustproof effect can also prevent impurities from entering the inner and outer cylinders and make the oil turbid under long-term use, so that the shock absorber can continue to maintain excellent shock absorption effect.

Further setting of the utility model: the end of the annular cylinder connected to the outer cylinder is provided with an annular clamping block, the outer wall of the outer cylinder is provided with an annular clamping groove adapted to the annular clamping block, and the annular cylinder The ring-shaped block on the upper cylinder is fitted in the ring-shaped groove on the outer cylinder.

By adopting the above technical solution, the connection between the annular cylinder and the outer cylinder can be made firmer, so as to prevent the annular cylinder from loosening, which is beneficial for the shock absorber to maintain a good dustproof effect.

A further setting of the utility model: the middle part of the connecting rod is provided with a limit assembly, the limit assembly includes a base and a limit block both made of rubber, the limit block is screwed on the base and the limit block side near the guide.

By adopting the above-mentioned technical scheme, by setting a limit device on the connecting rod, the phenomenon of direct friction or collision between the piston valve and the guide can be avoided when the stroke of the connecting rod is too large, and the piston valve and the guide can be protected. .

A further configuration of the utility model: the outer surface of the connecting rod is coated with a layer of electrophoretic coating.

By adopting the above technical solution, the outer surface of the connecting rod will have high density and the wear resistance and compression resistance will be greatly improved, which is beneficial to prolong the service life of the connecting rod.

The beneficial effects of the utility model are: the utility model has multiple dust-proof effects, can greatly improve the dust-proof effect of the shock absorber, and can well prevent impurities from entering the inner and outer cylinders and causing the oil to become dirty under long-term use. The phenomenon of turbidity, so that the excellent shock absorption effect can be continuously maintained.

Description of drawings

FIG. 1 is a structural schematic diagram of a shock absorber with multiple dustproof functions according to the present invention.

Detailed ways

As shown in Figure 1, a shock absorber with multiple dust-proof functions according to the embodiment of the utility model includes an inner cylinder 1, an outer cylinder 2, a connecting rod 3, a piston valve 4, a bottom valve 5 and an oil seal guide assembly 6. The connecting rod 3 is set in the inner cylinder 1, the piston valve 4 is sleeved on the bottom of the connecting rod 3, the bottom valve 5 is fixed on the bottom of the inner cylinder 1, and the oil seal guide assembly 6 includes an oil seal seat 61 and a guide 62. The oil seal seat 61 and the guide 62 are respectively sleeved on the connecting rod 3, the outer wall of the top of the outer cylinder 2 is provided with a dust cover 7, and the upper end of the dust cover 7 is provided with a buffer block 8 which is sleeved on the connecting rod 3, and The upper end of the buffer block 8 is provided with a limit nut 9, and further, a cover 10 adapted to the top opening of the outer cylinder 2 is extended on the upper end of the oil seal seat 61, and the cover 10 is closed to the top opening of the outer cylinder 2, further An annular gasket 11 is provided between the buffer block 8 and the limit nut 9, and the outer edge of the annular gasket 11 extends downwards with an annular cylinder 12, and the end of the annular cylinder 12 away from the annular gasket 11 is connected to the outer On the outer wall of the cylinder 2, the shock absorber extends the cover 10 on the oil seal seat 61 and the annular cylinder 12 on the ring gasket 11, so that the shock absorber has multiple dust-proof functions and can The dust-proof effect of the shock absorber is greatly improved, and it can also prevent impurities from entering the inner and outer cylinders 1 and 2 to make the oil turbid under long-term use, so that the shock absorber can continue to maintain excellent shock absorption Effect.

In this embodiment, one end of the annular cylinder 12 connected to the outer cylinder 2 is provided with an annular clamp 121, and the outer wall of the outer cylinder 2 is provided with an annular clamping groove 21 adapted to the annular clamp 121. The ring block 121 on the 12 is clamped in the ring groove 21 on the outer cylinder 2, so that the connection between the ring 12 and the outer cylinder 2 can be made firmer, so as to avoid the ring 12 from becoming loose. phenomenon, which is conducive to the shock absorber to maintain a good dust-proof effect.

In this embodiment, the middle part of the connecting rod 3 is provided with a limiting assembly, which includes a base 13 and a limiting block 14, both of which are made of rubber. The limiting block 14 is screwed on the base 13 and the limiting block 14 is close to One side of the guide 62, by setting a limit device on the connecting rod 3, can avoid direct friction or collision between the piston valve 4 and the guide 62 when the stroke of the connecting rod 3 is too large, and can protect the piston valve 4. And the role of the guide 62.

In this embodiment, the outer surface of the connecting rod 3 is coated with a layer of electrophoretic coating, so that the outer surface of the connecting rod 3 will have high density and the wear resistance and compression resistance will be greatly improved, which is beneficial to prolong the service life of the connecting rod 3 .

Claims (4)

1. one kind has the vibration damper of multiple dust-proof effect, comprise inner cylinder tube, outer cylinder, connecting rod, piston valve, bottom valve and oil sealing guidance set, described connecting rod is arranged in inner cylinder tube, described piston valve is sheathed on the bottom of connecting rod, described bottom valve is fixed on bottom inner cylinder tube, described oil sealing guidance set comprises oil sealing base and guider, described oil sealing base and guider are sheathed on connecting rod respectively, described outer cylinder top outer wall is provided with dust-proof cover, described dust-proof cover upper end is provided with buffer stopper and is sheathed on connecting rod, described buffer stopper upper end is provided with stop nut, it is characterized in that: the upper end extension of described oil sealing base is provided with the capping with outer cylinder open top adaptation, described capping is covered on outer cylinder open top, annular gasket is provided with between described buffer stopper and stop nut, described annular gasket outer rim is provided with circular cylinder to downward-extension, described circular cylinder is connected on outer cylinder outer wall away from one end of annular gasket.

2. a kind of vibration damper with multiple dust-proof effect according to claim 1, it is characterized in that: one end that described circular cylinder is connected to outer cylinder is provided with annular fixture block, described outer cylinder outer wall is provided with the annular slot with annular fixture block adaptation, and the annular fixture block on described circular cylinder is installed in the annular slot on outer cylinder.

3. a kind of vibration damper with multiple dust-proof effect according to claim 1, it is characterized in that: the middle part of described connecting rod is provided with limit assembly, described limit assembly comprises the base and limiting stopper made by rubber, described limiting stopper to be bolted on base and limiting stopper near the side of guider.

4. a kind of vibration damper with multiple dust-proof effect according to claim 1, is characterized in that: the outer surface of described piston rod has one deck electrophoretic coating.