CN2937643Y

CN2937643Y - Cylinder device

Info

Publication number: CN2937643Y
Application number: CN 200720018571
Authority: CN
Inventors: 崔惠美
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-07
Filing date: 2007-02-07
Publication date: 2007-08-22
Anticipated expiration: 2017-02-07

Abstract

The utility model relates to a device capable of adjusting the height of the chair, specifically speaking, relates to a damper only using the gas as the damping medium. This gas cylinder device comprises a push rod, a piston, a valve core, a guide sleeve, a skeleton, a compression bar, a cone stomata, an outer cylinder, an inner cylinder, a ring cavity, a sealing ring, a large-end clamping cover, a spacing ring, a washer and a metallic gasket and the guide sleeve comprises a lower guide sleeve, an internal guide sleeve and an upper guide sleeve. The lower guide sleeve is coated on the push rod and the internal guide sleeve is coated on an intermediate shaft. The upper guide sleeve is arranged below the skeleton and the upper guide sleeve and the skeleton are integrated with each other. A gas cylinder sealing device of the utility model has advantages that the sealing effect is excellent, the utility model wears well and endures abrasion, the integrative structure is convenient for installation, the anti-impact performance is good and each component is connected firm, etc and the utility model can be widely used for the gas cylinder sealing component of the seat.

Description

Cylinder assembly

Technical field

The utility model relates to a kind of device that can regulate chair height, relates in particular to the vibration damper of a kind of using gases as resisting medium.

Background technique

Cylinder assembly of the prior art, the seal arrangement of its push rod and piston is general to adopt one deck to seal with cylinder wall, the guide sleeve easy deformation that is hit, and also end face and Metal Contact are worn and torn easily; Because thereby seal action is played in the stressed generation distortion of sealing gasket, sealing gasket often needs and metal friction, is easy to damage, and seal is reduced greatly, needs often to change.

As Chinese publication CN2787918Y, it comprises urceolus, the top of urceolus is provided with needle-valve, the top of needle-valve is provided with loam cake, the inboard of needle-valve is provided with internal thread, at the outer side surface of loam cake corresponding outside thread is set, and the end face of needle-valve also is provided with ratchet, last covering corresponding ratchet is set, has better seal and shock resistance with this end face position contacting.Because needle-valve and guide sleeve are non-integrative-structure, fitting operation in process of production is very complicated, needs to install separately one by one, and the combination between each parts is easy to break away from, and working life is short, so the seal arrangement of cylinder piston has very big deficiency in the prior art.

Summary of the invention

The objective of the invention is to overcome above-mentioned defective, a kind of good sealing effect, the incorporate cylinder seal device of sealed member are provided.

For achieving the above object, the utility model adopts following technological scheme: it comprises push rod, piston, spool, guide sleeve, skeleton, depression bar, taper pore, urceolus, inner core, annular chamber, seal ring, major part Ka Gai, limited ring, jack shaft, end cap, metallic shim, guide sleeve comprises guide sleeve, interior guide sleeve and last guide sleeve down, following guide sleeve is enclosed within on the push rod, interior guide sleeve is enclosed within on the jack shaft, last guide sleeve is arranged on the below of skeleton, and last guide sleeve and skeleton are structure as a whole.

Two seal rings are set between following guide sleeve and the push rod from top to bottom, and two seal rings by following guide sleeve at interval; Two seal rings are set between interior guide sleeve and the inner core from top to bottom, and two seal rings by interior guide sleeve at interval; Between skeleton and the inner core multiple structure can be set: 1. two seal rings are set between skeleton and the inner core from top to bottom, and two sealed pictures by skeleton at interval; 2. a seal ring that is provided with between skeleton bottom and inner core closely is connected seal ring with skeleton with the sealing Cover Gasket; 3. can be that above two kinds of situations combine, one or two seal ring promptly is set between skeleton and inner core, and a seal ring that between skeleton bottom and inner core, is provided with, with the sealing Cover Gasket seal ring closely is connected with skeleton.Because all movable parts all adopt two-layer sealing, when the stressed generation deformation of one of them seal ring, play the effect of sealing, another is not stressed, and does not produce deformation; When a seal ring damaged, another can work on, and has relatively prolonged the working life of seal ring.

Two seal rings are set between skeleton and the spool from top to bottom, fix by two limited rings between two seal rings, do not connect between two limited rings, gas can free flow by the taper pore like this.Two protuberances that stagger mutually are set between depression bar and the skeleton, and one of them protuberance is arranged on the below of depression bar, and another protuberance is arranged on the top of skeleton, plays the qualification effect during to-and-fro motion like this between depression bar and skeleton, break-off can not take place.

Cylinder seal device of the present utility model has that good sealing effect, durable wear, integral structure are convenient to install, shock resistance is good and advantage such as connection each parts is fastening, can be widely used in the cylinder seal parts of seat.

Description of drawings

Fig. 1 is a whole sectional structure chart of the present utility model;

Fig. 2 is an A of the present utility model portion enlarged view among Fig. 1;

Fig. 3 is a B of the present utility model portion enlarged view among Fig. 1;

Fig. 4 is the C portion enlarged view of the utility model embodiment 1 among Fig. 1;

Fig. 5 is the C portion enlarged view of the utility model embodiment 2 among Fig. 1.

Embodiment

Embodiment 1

The utility model comprises urceolus 6 and inner core 5, form annular chamber 7 between urceolus 6 and the inner core 5, annular chamber 7 is the circulation passage of gas, push rod 1, piston 15, spool 10, guide sleeve, skeleton 11, depression bar 12, taper pore 14, seal ring 2, major part card lid 8, limited ring 17, jack shaft 18, end cap 19 and metallic shim 4 are set in the inner core 5, guide sleeve comprises guide sleeve 3, interior guide sleeve 9 and last guide sleeve 13 down, following guide sleeve 3 is enclosed within on the push rod 1, interior guide sleeve 9 is enclosed within on the jack shaft 18, and last guide sleeve 13 is structure as a whole with skeleton 11.

Be provided with from top to bottom between following guide sleeve 3 and the push rod 1 between two seal rings, 2, two seal rings 2 by following guide sleeve 3 intervals; Be provided with from top to bottom between interior guide sleeve 9 and the inner core 5 between two seal rings, 2, two seal rings 2 by interior guide sleeve 9 intervals; Be provided with from top to bottom between skeleton 11 and the inner core 5 between two seal rings, 2, two seal rings 2 by skeleton 11 intervals.Owing to adopt two-layer sealing, when one of them seal ring 2 stressed generation deformation, play the effect of sealing, another is not stressed, and does not produce deformation; When a seal ring 2 damaged, another can work on, and has relatively prolonged the working life of seal ring 2.

The upside of urceolus 6 and downside are all to in-flanges, metallic shim 4 is set on in-flanges, when

external impacts urceolus

6,4 buffer functions of metallic shim, avoided between urceolus 6 and the skeleton 11 and urceolus 6 and end cap 19 between direct the contact, can prevent the distortion of skeleton 11 and end cap 19 effectively.Be provided with from top to bottom between skeleton 11 and the spool 10 between two seal rings, 2, two seal rings 2 and fix by two limited rings 17, do not connect between the limited ring 17, gas can circulate smoothly in the taper pore like this.At jack shaft 18 upsides major part card lid 8 is set, major part card lid 8 is stuck on the packing ring 20, and packing ring 20 cooperates with interior guide sleeve 9.Two protuberances that stagger mutually 21 are set between depression bar 12 and skeleton 11, one of them protuberance 21 is arranged on the below of depression bar 12, another protuberance 21 is arranged on the top of skeleton 11, plays the qualification effect during to-and-fro motion like this between depression bar 12 and skeleton 11, break-off can not take place.

During actual the use, when push rod 1 and urceolus 6 are subjected in opposite directions pulling force, piston 15 with respect to inner core 5 to lower slider, piston 15 lower chamber gas be compressed, air pressure strengthens; And the cavity volume on piston 15 tops becomes big, and air pressure diminishes, so piston 15 is subjected to and glide direction opposite effect power, has stoped the further slip of piston 15, forms spring effect; When piston 15 arrives a certain position, the differential pressure action power of chamber and outer equilibrium of forces up and down, piston 15 moves and stops; After pulling force disappeared relatively, piston 15 upwards slided under the effect of pressure reduction, set back, and therefore the utlity model has good buffer function.When push rod 1 and urceolus 6 are subjected to relative pressure, have identical effect, just move and be subjected to force direction with aforementioned opposite.

In the time need regulating with the spacing of spool 10 to piston 15, depression bar 12 is depressed, promoting spool 10 moves down, the air inlet/outlet of skeleton 11 is communicated with, the chamber pressure up and down of cylinder is identical, but pressure surface is long-pending big owing to be bullied below the ratio above the piston 15, therefore the pressure that acts on the piston 15 is downward, this just causes the force unbalance that is subjected to of piston 15, and move down with respect to cylinder, the gas of lower chambers enters upper chamber by annular chamber 7 and taper pore 14 simultaneously, after piston 15 moves to the desired position, unclamp the pressure of depression bar 12, the relative movement of piston 15 stops; Move in the opposite direction if desired, need to press down-pressed pole 12 and spool 10, apply relative pressure with cylinder for simultaneously push rod 1, then piston 15 moves up with respect to cylinder, reach the desired position, unclamp the pressure of depression bar 12, the air inlet/outlet of skeleton 11 is closed, and the relative movement of piston 15 stops.

The utility model can be used for connecting two parts, cushions pulling force and pressure between them, and can regulate the distance between them.Urceolus 6 is fixedlyed connected with chair top, both can make chair have buffer function, the height of chair also can be regulated simultaneously, and its sealing effect is fine.

Embodiment 2

Cylinder assembly also comprises sealing Cover Gasket 16; the below of sealing Cover Gasket 16 is provided with dividing plate 22; and embodiment 1 difference is between skeleton 11 and the inner core 5 seal ring 2 not to be set; and a seal ring 2 that only between skeleton 11 bottoms and inner core 5, is provided with; with sealing Cover Gasket 16 seal ring 2 closely is connected with skeleton 11, dividing plate 22 separates air circulation duct, has changed the trend of air-flow; the direct impact of air-flow be can avoid like this, sealing Cover Gasket 16 and seal ring 2 protected sealing Cover Gasket 16.This kind structure not only plays fixation, and has good sealing effect.

Embodiment 3

The seal ring 2 that is provided with between skeleton 11 and the inner core 5 in conjunction with the embodiments 1 with embodiment's 2 dual modes, one or two seal ring 2 promptly is set between skeleton 11 and inner core 5, and a seal ring 2 that is provided with between skeleton 11 bottoms and inner core 5 closely is connected seal ring 2 with skeleton 11 with sealing Cover Gasket 16.

Claims

1. cylinder assembly, it comprises push rod, piston, spool, guide sleeve, skeleton, depression bar, taper pore, urceolus, inner core, annular chamber, seal ring, major part Ka Gai, limited ring, packing ring, metallic shim, guide sleeve comprises guide sleeve, interior guide sleeve and last guide sleeve down, following guide sleeve is enclosed within on the push rod, interior guide sleeve is enclosed within on the jack shaft, last guide sleeve is arranged on the below of skeleton, it is characterized in that guide sleeve and skeleton are structure as a whole.

2. cylinder assembly according to claim 1 is characterized in that being provided with between depression bar and the skeleton two protuberances that stagger mutually.

3. cylinder assembly according to claim 2 is characterized in that one of them protuberance is arranged on the below of depression bar, and another protuberance is arranged on the top of skeleton.

4. cylinder assembly according to claim 1 and 2 is provided with two seal rings between guide sleeve and the push rod under it is characterized in that from top to bottom, and two seal rings by following guide sleeve at interval.

5. cylinder assembly according to claim 1 and 2 is provided with two seal rings between guide sleeve and the inner core in it is characterized in that from top to bottom, and two seal rings by interior guide sleeve at interval.

6. cylinder assembly according to claim 5 is characterized in that being provided with from top to bottom between skeleton and the inner core two seal rings, and two seal rings by skeleton at interval.

7. cylinder assembly according to claim 5 is characterized in that cylinder assembly also comprises the sealing Cover Gasket, a seal ring that between skeleton bottom and inner core, is provided with, and the sealing Cover Gasket is connected seal ring with skeletal fixation.

8. according to claim 6 or 7 described cylinder assemblys, it is characterized in that two seal rings are set between skeleton and the spool from top to bottom, fix by two limited rings between two seal rings.