CN210565960U - Air pressure bar - Google Patents
Air pressure bar Download PDFInfo
- Publication number
- CN210565960U CN210565960U CN201921137774.3U CN201921137774U CN210565960U CN 210565960 U CN210565960 U CN 210565960U CN 201921137774 U CN201921137774 U CN 201921137774U CN 210565960 U CN210565960 U CN 210565960U
- Authority
- CN
- China
- Prior art keywords
- outer tube
- piston
- unit
- tube unit
- accommodating space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000004308 accommodation Effects 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Abstract
A pneumatic rod comprises an outer tube unit, an inner tube unit and a piston unit. A first accommodating space is defined inside the outer pipe unit; the inner pipe unit is arranged in the first accommodating space in an airtight mode, defines a second accommodating space and a flow channel for communicating the first accommodating space with the second accommodating space; the piston unit divides the second accommodating space into a first area and a second area which are spaced, and the first area is communicated with the flow channel and filled with high-pressure gas. When the piston unit moves outwards relative to the outer pipe unit, the piston of the piston unit pushes the gas in the first area and compresses the gas to the first accommodating space through the flow channel, and restoring force for enabling the piston unit to retract in the outer pipe unit is accumulated.
Description
Technical Field
The utility model relates to a damping device especially relates to an utilize gas compression characteristic's atmospheric pressure stick.
Background
Conventional pressure bars generally include an outer tube defining a chamber, a piston axially movable within the chamber, and a piston rod connected to the piston. The outer tube is filled with gas with specific pressure, the piston is positioned at the upper end of the outer tube, and the piston rod penetrates out of the upper end of the outer tube from the piston. The piston rod is driven by external force to move towards the lower end of the outer pipe, and compresses the gas filled in the outer pipe, so that elastic pressure is accumulated. When the external force is removed, the elastic pressure can push the piston to the upper end of the outer tube, so as to generate the effect of buffering and shock absorption or elastic reset. Currently, the gas cylinder is designed to push the piston rod outwards relative to the outer tube when the external force is removed, and the piston rod is not designed to retract inwards relative to the outer tube when the external force is removed.
Disclosure of Invention
An object of the utility model is to provide an air pressure bar of new-type structure.
The utility model discloses a pneumatic rod contains outer tube unit, inner tube unit, and piston unit. A first accommodating space extending in the vertical axial direction is defined in the outer pipe unit; the inner pipe unit is arranged in the first accommodating space in an airtight mode, a second accommodating space extending in the vertical axial direction is defined in the inner pipe unit, and a flow channel radially penetrates through one end of the inner pipe unit and is communicated with the first accommodating space and the second accommodating space; the piston unit comprises a piston which is arranged in the second accommodating space in an airtight mode and divides the second accommodating space into a first area and a second area which are spaced, and a piston rod which is connected with the piston and axially extends through the first area and penetrates out of the inner tube unit and the outer tube unit, and the first area is communicated with the flow channel and is filled with high-pressure gas.
The utility model discloses a pneumatic rod, the inner tube unit have airtight set up in base, airtight in the outer tube unit set up in the outer tube unit and be located the footstock of base top, and airtight install in the base with between the footstock and with the base with the footstock defines out jointly the inner tube of second accommodation space, the footstock is worn to be equipped with the runner, the piston rod is certainly the piston shaft is past to extend outward the footstock is worn out outside the outer tube.
The utility model discloses a pneumatic rod, the outer tube unit includes the outer tube, and installs the air lock of outer tube, outer tube top portion supplies the piston rod is worn to establish, outer tube bottom portion is equipped with the confession the hole of aerifing of the detachable liftoff airtight installation of air lock, the airtight stopper of base adorn in outer tube bottom portion to have the intercommunication aerify the hole with the intercommunication way of first accommodation space.
The beneficial effects of the utility model reside in that: the first area and the first accommodating space are communicated through the flow passage, when the piston rod moves outwards under the action of external force and drives the piston to compress gas in the first area, the gas in the first area can be compressed from the flow passage to the first accommodating space and accumulate a restoring force, the second area can also generate negative pressure suction force due to the enlarged space, and when the external force is removed, the piston can be pushed by the restoring force to move towards the second area, so that the piston unit moves inwards relative to the outer pipe unit constantly.
Drawings
Other features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings, in which:
FIG. 1 is a cross-sectional view illustrating one embodiment of the air pressure bar of the present invention;
FIG. 2 is an enlarged partial cross-sectional view illustrating a relationship between a first receiving space, a second receiving space and a flow passage according to the embodiment; and
fig. 3 is a view similar to fig. 1, illustrating a usage pattern when a piston unit of the embodiment is moved.
Detailed Description
Referring to fig. 1, 2 and 3, an embodiment of the pneumatic rod of the present invention includes an outer tube unit 1, an inner tube unit 2, and a piston unit 3.
The outer tube unit 1 includes an outer tube 11 extending axially upward and downward, and an air plug 12 detachably mounted on the outer tube 11, the outer tube 11 defines a first accommodating space 10 extending axially, and an inflation hole 110 coaxially penetrating and communicating with the first accommodating space 10 is disposed at a lower end of the outer tube 11. The air plug 12 is detachably and airtightly installed in the air charging hole 110 to close the air charging hole 110.
The inner tube unit 2 is disposed in the first accommodating space 10, and includes a base 21 hermetically disposed in the bottom end portion of the outer tube 11, a top seat 22 hermetically disposed in the top end portion of the outer tube 11, and an inner tube 23 installed between the base 21 and the top seat 22 and radially spaced from the outer tube 11. The base 21, the top seat 22 and the inner tube 23 together define a second accommodating space 20 spaced apart from the first accommodating space 10. The base 21 has a communication channel 210 communicating the inflation hole 110 with the first accommodation space 10, and the top seat 22 has a flow channel 220 radially penetrating and communicating the first accommodation space 10 and the second accommodation space 20.
The piston unit 3 includes a piston 31, and a piston rod 32 connected to the piston 31. The piston 31 is axially movably and airtightly mounted in the inner tube 23, and divides the second accommodating space 20 into a first area 201 and a second area 202 which are axially spaced, the first area 201 is located above the second area 202 and adjacent to the top seat 22 and communicated with the flow passage 220, and the second area 202 is adjacent to the base 21. The piston rod 32 extends axially outward from the piston 31 through the first region 201 and the top seat 22 and out of the top end of the outer tube 11.
During manufacturing, the piston 31 abuts against the base 21 to make the volume of the first area 201 larger than that of the second area 202, and the first accommodating space 10 is filled with high-pressure gas from the inflation hole 110, the high-pressure gas is filled into the first accommodating space 10 and the first area 201 through the communication channel 210 and the flow channel 220, and then the inflation hole 110 is sealed by the gas plug 12.
In use, an external force is applied to drive the piston rod 32 to protrude upwards relative to the outer tube 11, so that the piston rod 32 drives the piston 31 to displace upwards relative to the inner tube 23, at this time, the piston 31 compresses the high-pressure gas in the first region 201, and the high-pressure gas flows to the first accommodating space 10 through the flow channel 220 and is compressed to accumulate a restoring force; at the same time, the volume of the second region 202 gradually increases to form a negative pressure. When the external force is removed, the restoring force and the negative pressure act simultaneously to drive the piston 31 to move downward, thereby driving the piston rod 32 to retract downward into the outer tube 11.
It should be particularly noted that the structure of the inner tube unit 2 is not limited to the embodiment, and in other variations of the embodiment, the inner tube unit 2 may not have the base 21 so that the inflation hole 110 can be directly communicated with the first accommodation space 10, or the flow channel 220 directly penetrates through the inner tube 23 to communicate the first area 201 and the first accommodation space 10, neither of which affects the operation and function of the air pressure rod of the present invention.
To sum up, the utility model discloses pneumatic rod's efficiency lies in: when the piston rod 32 is protruded out of the outer tube 11 under the action of external force, the piston 31 is driven to compress the gas in the first region 201 and the first accommodating space 10 to accumulate pressure to generate a restoring force, and the second region 202 is expanded to generate a negative pressure, so that when the external force is removed, the piston 31 is constantly driven to drive the piston rod 32 to automatically retract, thereby achieving the purpose of the present invention.
The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the description of the present invention are still within the scope of the present invention.
Claims (3)
1. A gas cylinder, comprising: inner tube unit and piston unit, the inside second accommodation space that defines upper and lower axial extension of inner tube unit, the piston unit including airtight set up in the second accommodation space and will the piston of second accommodation space partition for spaced first district and second district, and connect piston and axial extension pass first district is worn out the outer piston rod of inner tube unit, its characterized in that: the air pressure rod further comprises an outer tube unit, a first containing space extending in the vertical axial direction is defined in the outer tube unit, the inner tube unit is arranged in the first containing space in an airtight mode and is provided with a flow channel which penetrates through one end portion of the inner tube unit in the radial direction and is communicated with the first containing space and the first area, and high-pressure gas is filled in the first area.
2. The gas cylinder according to claim 1, wherein: the inner tube unit is provided with a base which is arranged in the outer tube unit in an airtight mode, a top seat which is arranged in the outer tube unit in an airtight mode and is located above the base, and an inner tube which is arranged between the base and the top seat and is defined with the base and the top seat together to form a second containing space, the top seat is provided with the flow channel in a penetrating mode, and the piston rod extends outwards in the axial direction of the piston through the top seat and penetrates out of the outer tube.
3. The gas cylinder according to claim 2, wherein: the outer tube unit comprises an outer tube and an air plug arranged on the outer tube, the top end of the outer tube supplies the piston rod to penetrate through, the bottom end of the outer tube is provided with an inflation hole for the air plug to be detachably and airtightly arranged, the base airtight plug is arranged at the bottom end of the outer tube and is provided with a communication channel for communicating the inflation hole with the first accommodating space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921137774.3U CN210565960U (en) | 2019-07-18 | 2019-07-18 | Air pressure bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921137774.3U CN210565960U (en) | 2019-07-18 | 2019-07-18 | Air pressure bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210565960U true CN210565960U (en) | 2020-05-19 |
Family
ID=70622572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921137774.3U Expired - Fee Related CN210565960U (en) | 2019-07-18 | 2019-07-18 | Air pressure bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210565960U (en) |
-
2019
- 2019-07-18 CN CN201921137774.3U patent/CN210565960U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200519 |