CN2113969U - Lifting device - Google Patents
Lifting device Download PDFInfo
- Publication number
- CN2113969U CN2113969U CN 92204232 CN92204232U CN2113969U CN 2113969 U CN2113969 U CN 2113969U CN 92204232 CN92204232 CN 92204232 CN 92204232 U CN92204232 U CN 92204232U CN 2113969 U CN2113969 U CN 2113969U
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- China
- Prior art keywords
- tube body
- piston
- lower tube
- upper tube
- resistance
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Abstract
The utility model discloses a lifting device using gas as lifting power. The structure of the utility model comprises an upper tube body, a lower tube body, an inner tube, a piston and a valve rod. A blocking element is used by one end of the upper tube body to make the end of the upper tube body form sealed shape, the inner tube is arranged in the upper tube body, and an opening is formed on the other end of the upper tube body. One end of the lower tube body is in the shape of sealing, the blocking element provided with an axle hole is arranged in the other end of the lower tube body, and high-pressure gas is filled into the lower tube body. The valve rod whose one end is provided with a control switch is arranged in the inner tube. The structure is used, a valve is opened and closed by operating the control switch to control the piston to form two space filled with the gas in the lower tube body to elevate the upper tube body, and thus the lifting device is formed.
Description
The utility model relates to a kind of bont, and particularly a kind of gas that utilizes is as the bont that promotes power.
General bont is of a great variety, open the strut bar (claiming the elevator bar bar again) of usefulness as five gate-type automobile back doors, reach the strut bar of seat in the present office furniture, this type of bont (as Fig. 1) all is that utilization is oily, the mode of gas coexistence is compressed gas and accumulate lifting power, promptly push against piston to reduce the space that hydraulic oil can account for, and the space of causing trapped gas dwindles and is compressed, and form the pressure gas that accumulates energy, form the power that promotes when releasing with convenient external force.
The relevant gas that only utilizes is as the device that promotes power, strut bar (claiming lifting arm again) when finding has only five gate-type automobile back doors to open at present, its structure as shown in Figure 2, comprise rod tube 110 and piston rod 120, high pressure gas (being generally nitrogen) and a spot of oil are housed in the rod tube 110 to be used for lubricated, one end of rod tube 110 is provided with attaching parts 111, to be connected to the position of a body or vehicle body; The other end of rod tube 110 then is provided with a pair of fixed sealing ring 112 and 113 of the configuration that forward laps; Be provided with the air tight ring 114 of elasticity (being generally colloid) between two seal rings, fixed sealing ring 112 and 113 structure are to form ring depression 132 and 131 at central part, the body that utilizes rod tube 110 1 ends is with the roll-in in addition of suitable equipment, the tube wall of rod tube one end is embedded in the depression of two fixed sealing ring 112 and 113, and it is affixed to obtain desirable air-tightness.One end of piston rod 120 has a circular piston 121, and piston 121 is provided with through hole 122, and the other end then passes the sealing end of rod tube 110 and stretches out outside the rod tube 110, and forms attaching parts 123 on the other end of piston rod 120.
The operating principle of this kind lifting arm, see Fig. 3, because the attaching parts 111 and 123 of rod tube 110 and piston rod 120 is connected on two objects, for example, on the car door and vehicle body of automobile, firmly door is closed following time from the position of drawing back as the user, be equivalent to apply external force F, piston rod 120 is stretched in the rod tube 110, form two space I and II in the rod tube 110 and make, when piston 121 stretched into along with piston rod 120, the pressure in the space 1 was gradually greater than the pressure in the II of space, but because piston 121 is provided with through hole 122, therefore, gas in the I of space will enter the space II by through hole 122, and the pressure in two spaces is equated, i.e. P
I=P
II, the pressure of suffered gas is F on the contact surface of piston 121 and space I at this moment
I=P
IA
I, and area A wherein
I=π (D/2)
2, and the contact surface of piston 121 and space II, its area A
II=π (D/2)
2-π (d/2)
2, the power of institute's holding capacity is F
II=P
IIA
II, under condition of balance on force, F
I=F
II+ F.When the power F that puts on lifting arm one end removes, when just opening the lever gear door of car, because F
I＞F
II, piston 121 suffered clean power can be compeled to whole piston 121, and promote piston rod 120 and pass to the position of mentioning; Because through hole 122 is not very big,, and obtain the desirable process of mentioning again so the speed of mentioning can't be too fast.
From the above, automobile with lifting arm because controollable switch (as valve) itself can't be set, so this structure can not be used for chair, and the bont as if as chair must be that the lower end is fixed on the chair foot rest (as 100 among Fig. 1) with the piston rod end, and be fixed in seat support lower end 101 with the upper end, but because, the general about diameter that has only about 8mm of piston rod, for being used for carrying human body weight, steadiness is not good.
Therefore, main purpose of the present utility model is to provide a kind of gas that utilizes for promoting the bont of power, particularly is applied on the chair, and has the bont of preferable steadiness.
Principal character of the present utility model is with the bont of gas as lifting power, makes the piston two ends all have the thicker footpath of cutting, the steadiness when supporting with acquisition in order to connect the body of establishing with object.
Bont of the present utility model comprises: upper tube body, lower tube body, interior pipe, piston, valve rod;
One end of upper tube body is to utilize resistance to close element to be sealed and be the sealing shape, and the other end forms the opening shape;
One end of lower tube body is to utilize resistance to close element to be sealed and be the sealing shape, and the other end is articulated in the open end of aforementioned upper tube body, and is provided with a plurality of resistances that central authorities offer axis hole closes element in the end, is filled with high pressure gas in the lower tube body;
Be provided with interior pipe in the upper tube body, the resistance of an end of interior pipe and upper tube body one end is closed element and is set firmly, and the other end stretches through lower tube body resistance and close axis hole in the element, and is embedded with piston in lower tube body, and has an air extractor vent on tube wall;
Be provided with piston in the lower tube body, piston is separated into two spaces with lower tube body inside, and is embedded at interior pipe, offers a passage that gas is flowed through on it;
Be provided with valve rod in aforementioned in the pipe, an end of valve rod is stretched and is placed upper tube body and external master cock, and the other end is then stretched through the passage of piston and is arranged in lower tube body, and is provided with the keying of a valve control piston with control channel;
By above structure, when desiring upper tube body is descended, can first operation control switch, Open valve, make the high pressure gas passing piston in the lower tube body that the space in the lower tube body is diminished, high pressure gas via the passage of piston and on the pipe air extractor vent and enter in another space of lower tube body, accumulate more high-voltage gas, make the decline of upper tube body reach certain certain position up to the closing control switch; When desiring upper tube body is upwards promoted, operation control switch then, Open valve makes the air pressure of former more high pressure conditions be back to former lower tube body inner space, and makes piston be subjected to jacking, upwards promotes and drive upper tube body.
Effect of the present utility model is: the utility model is owing to reasonably utilize the difference of pressure on piston two sides, make bont have rational supporting construction, because piston two ends and object bonded assembly body have thicker cross-sectional plane, have preferable stability and intensity when bearing weight.
For achieving the above object and effect, now enumerate preferred embodiment and cooperate graphicly, after being described in more detail in, wherein diagram is respectively:
Fig. 1 is a bont organigram in the past;
Fig. 2 is a kind of bont organigram that utilizes gas;
Fig. 3 is a kind of bont operating principle scheme drawing that utilizes gas;
Fig. 4 is the organigram of the utility model embodiment;
Fig. 5 is the action scheme drawing of the utility model embodiment;
Fig. 6 is the scheme drawing that increases sleeve among the utility model embodiment;
Structure enlarged drawing when Fig. 7 is second valve opening of the utility model embodiment;
Structure enlarged drawing when Fig. 8 is second valve closing of the utility model embodiment.
The unitary construction of the utility model embodiment (as Fig. 4) mainly includes: upper tube body 1, lower tube body 2, interior pipe 3, piston 4, valve rod 5.
Upper tube body 1 is positioned at the top of unitary construction, is obstructed and closes element 11 sealings in inside, upper tube body 1 upper end, and periphery forms approximate oblique cone shape, so that match with seat support, its lower end forms the opening shape, so that lower tube body 2 is articulated in it;
Lower tube body 2 is positioned at the below of unitary construction, the lower end is provided with resistance and closes element 21 with sealed bottom, and close element 21 lower ends in resistance and convex with helicoid interlocking body 211(and be used for cooperating lock to establish) with the foot rest of chair, the upper end is hubbed at the open end of upper tube body 1, and with periphery and upper tube body 1 sliding the subsides, and in the upper end, be provided with a plurality of resistances and close element 22 so that the upper end is sealed, the centre that element 22 is closed in each resistance is provided with axis hole 23, wherein, being positioned at the resistance of below, to close the external diameter of the axis hole 231 diameter pipes 3 on the element 221 big, so that form passage; And lower tube body 2 volume inside 24 are filled with high pressure gas (being generally nitrogen);
Piston 4 can be done the slippage of tool leak tightness in lower tube body 2, and is provided with the flow through depressed part of passage 41 of the gases that can make in the lower tube body 2;
Manage in 3 in valve rod 5 is arranged at, the upper end is provided with the switch shape shown in the master cock 52(figure that is subjected to spring 51 bullets top and only is signal, during actual enforcement, can adopt multiple mode, as common lever), the lower end is provided with valve 53, is provided with resistance between valve rod 5 and the interior pipe 3 and closes element 54, overflows the outside to prevent that gas from letting out through interior pipe 3.
When embodiment desire of the present utility model is made down maneuver, as Fig. 5, can earlier master cock 52 be pressed down, valve rod 5 interlocking valves moved down and opened passage 41 on the piston 4 this moment, high pressure gas in the lower tube body 2 are entered in the interior pipe 3 via passage 41, and by air extractor vent 31 enter the resistance close in the axis hole 231 of element 221, upper tube body 1 was seated at the weight on the seat support via human body and compressed and move down this moment, because of interior pipe 3 and upper tube body 1 one interlock, so interior pipe will push against piston 4 and move down, and the gas in the lower tube body 2 is flowed into toward passage 41, flow into axis hole 231 through air extractor vent 31 again, with moving down of piston 4, gas can enter in the space 25, reach in certain certain position up to upper tube body, just can decontrol master cock 52, so that valve 53 closes, after valve 53 is closed, two spaces 24 in the lower tube body 2, gas in 25 just can not remake circulation, and reaches the quiescence of balance.
Because space 24 in the lower tube body 2, volume difference in 25, gas volume with amount can be than be subjected to bigger compression in space 24 in space 25, and form high pressure to accumulate restoring force, therefore, when upper tube body 1 is upwards promoted, as long as master cock 52 is pressed down, and Open valve 53, high pressure gas in the space 25 then, can be back in the space 24, and make the volume in space 24 increase ejector ram 4, carry and 1 rising of interlock upper tube body on the pipe 3 in causing, till the height of upper tube body 1 top seat support reaches required height, again master cock 52 is decontroled valve 53 is closed.
In addition because the gas of the utility model in space 25 is subjected to bigger compression, the high pressure restoring force of possible its formation of membership, make wherein gas overcome the elastic force of the spring 51 of master cock 52, and let out in valve 53 enters the space 24 of lower tube body 2, though cause the seat support of top to be positioned the below, desire to have the phenomenon that rises gradually.So the utility model also improves at these misgivings, mainly be on valve rod 5 except that having valve 53, the design that also has second valve, as shown in Figure 7, below valve rod 5, be provided with expansion section 55, and passage 41 places in the piston 4 are provided with the eck 42 of a contraction, and the internal diameter of eck 42 is greater than the former bar footpath of valve rod 5 and the bar footpath of expansion section 55; Below the eck 42 of piston 4, be provided with choke ring 7, choke ring 7 is to be made by elastic body, and be provided with the antelabium 71 of deflection internal diameter (promptly to valve rod 5) by the inner radius of central valve rod 5, antelabium 71 internal diameters under normal condition greater than the former bars of valve rod 5 footpath, but bar footpath less than expansion section 55, therefore, when valve 53 is opened, gas in the space 24 can flow through gap between the antelabium 71 of passage 41, choke ring 7 and the valve rod 5 former bars footpaths, and eck 42 and the valve rod 5 former bars gap between directly, and enter in the space 25; But when valve 53 resistance closed walks 41, as shown in Figure 8, antelabium 71 internal diameters of choke ring 7 are because of less than expansion section 55, can tightly restraint the expansion section of valve rod 5, and the high pressure gas in space 25 will impel antelabium 71 to compress the bar footpath of expansion section 55 when desiring to be back to space 24, form sealing more closely, high pressure gas can't be circulated, to reach the effect of location fully.
And for example shown in Figure 6, the utility model also can utilize sleeve 6 of interlocking body 211 interlockings in the lower end of lower tube body 2, make sleeve 6 lower ends form taper with in the foot rest that is embedded at chair, and sleeve 6 upper inner are provided with plastic bushing 61, and the outer circumferential side of plastic bushing 61 sealing label upper tube bodies 1, except that increasing steadiness, and can play decoration function.
Claims (4)
1, a kind of bont comprises: element is closed in upper tube body, lower tube body, piston, resistance; The element sealing is closed in the one end utilization resistance of upper tube body, and the other end is opening-like; One end of lower tube body is to utilize resistance to close the element sealing, and the other end is articulated in the open end of aforementioned upper tube body, and have a plurality of resistances that central authorities are provided with axis hole and close element in the end, described piston is positioned at the lower tube body that is filled with high pressure gas lower tube body is divided into two spaces, it is characterized in that:
Have the interior pipe that offers an air extractor vent on the tube wall in the described upper tube body, it is affixed that element is closed in the resistance of an end of interior pipe and upper tube body one end, and the other end stretches through lower tube body resistance and close axis hole in the element, and affixed with described piston in lower tube body; Described piston is to have the flow through piston of passage of gas;
Also have valve rod in above-mentioned in the pipe, an end of valve rod is stretched to place outside the upper tube body and connect and is established a master cock, and the other end is stretched through the passage of described piston and is arranged in lower tube body and connects a valve control piston;
When the described master cock Open valve of operation, high pressure gas in the lower tube body are passed piston, high pressure gas enter in another space of lower tube body via the passage of piston and the air extractor vent on the interior pipe, and up to the closing control switch, this moment, the decline of upper tube body reached a certain position; When operation control switch once more, during Open valve, the gas backstreaming of former more high pressure conditions is to former lower tube body inner space, and the jacking piston drives upper tube body and upwards promotes.
2, a kind of bont according to claim 1 is characterized in that: a plurality of resistances in the described lower tube body are closed in the element, and the resistance that is positioned at pipe upper vent hole corresponding position is closed shaft hole diameter external diameter of pipe on the element for big.
3, bont according to claim 1 is characterized in that: the end that described lower tube body does not articulate with described upper tube body, with a sleeve locking, the other end of described sleeve has and the sliding lining that pastes of upper tube body.
4, a kind of bont according to claim 1 is characterized in that: be provided with eck in the described piston, the valve rod lower end is provided with the expansion section simultaneously, and the internal diameter of described eck is greater than the expansion section; Be provided with the choke ring in addition below described eck, the choke ring is provided with antelabium on the direction of inner footpath, and the internal diameter of antelabium is slightly larger than described valve rod bar footpath, but less than expansion section bar footpath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92204232 CN2113969U (en) | 1992-03-16 | 1992-03-16 | Lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92204232 CN2113969U (en) | 1992-03-16 | 1992-03-16 | Lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2113969U true CN2113969U (en) | 1992-08-26 |
Family
ID=4950683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92204232 Granted CN2113969U (en) | 1992-03-16 | 1992-03-16 | Lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2113969U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995897A (en) * | 2017-12-29 | 2019-07-09 | 广东欧珀移动通信有限公司 | Functional unit, electronic device and its control method |
-
1992
- 1992-03-16 CN CN 92204232 patent/CN2113969U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995897A (en) * | 2017-12-29 | 2019-07-09 | 广东欧珀移动通信有限公司 | Functional unit, electronic device and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |