CN215718056U - Pneumatic rotary damping device - Google Patents
Pneumatic rotary damping device Download PDFInfo
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- CN215718056U CN215718056U CN202122140208.1U CN202122140208U CN215718056U CN 215718056 U CN215718056 U CN 215718056U CN 202122140208 U CN202122140208 U CN 202122140208U CN 215718056 U CN215718056 U CN 215718056U
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- oil passing
- end disc
- air chamber
- piston
- damping device
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Abstract
The utility model provides a pneumatic rotary damping device, which solves the problem that rotating parts such as doors or windows and the like in the prior art are undamped. The pneumatic rotary damping device comprises a closed air chamber formed by a shell, wherein a movable piston and grease are arranged in the closed air chamber, a guide rod is hermetically matched at the middle position of the piston, the upper end of the guide rod extends out of the closed air chamber, and an oil passing structure for the grease to pass through is arranged on the piston. The rotary damping device is simple in integral structure and convenient to use, solves the problem that the rotary device does not have damping, can achieve the purpose of controlling the rotary damping speed by changing the depth or the diameter of a corresponding oil passing structure or the viscosity of grease, and is suitable for various doors and windows and various occasions needing rotary damping.
Description
Technical Field
The utility model relates to the technical field of pneumatic rotating devices for doors and windows, in particular to a pneumatic rotating damping device which is simple in structure and convenient to use and can provide damping for a rotating device.
Background
A floor spring and a door closer are automatic return door closing devices commonly used in the current market, a rotor and a shaft in a pneumatic floor spring in the prior art are of a split structure, when the pneumatic floor spring is used, a door or a window rotates to compress an internal closed air chamber, and when the door or the window returns, air pressure in the air chamber is released, Chinese invention patent CN113047719A discloses a pneumatic automatic return device, the compression of the closed air chamber is realized by utilizing the relative motion between an upper convex shaft and a lower convex shaft, so that greater air pressure is formed in the air chamber, when the door or the window returns, the air pressure in the closed air chamber is released, corresponding adjustment can be carried out according to doors with different weights arranged on the upper convex shaft, the return of different doors at different speeds is realized, different requirements are met, but the structural form of realizing the return of the door by simply utilizing the closed air chamber still has defects, the most obvious structure is that the pneumatic floor spring has no damping effect, namely, the return speed of the door is single, the utility model provides a feeling of stiffness, and is an improvement on the basis of the technical document.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pneumatic rotary damping device, which solves the problem that rotating parts such as doors or windows and the like in the prior art are undamped.
The technical scheme of the utility model is realized as follows: the utility model provides a pneumatic rotary damping device, includes the airtight air chamber that the casing formed, be equipped with mobilizable piston and grease in the airtight air chamber, the sealed cooperation in intermediate position of piston has the guide bar, the upper end of guide bar stretches out to airtight air chamber outside, it has the confession to open on the piston the oily structure of mistake that the grease passes through.
As a preferred embodiment, the piston comprises an upper end disc, a middle column and a lower end disc which are arranged from top to bottom, wherein an O-ring is sleeved on the middle column;
the inner diameter of the O-shaped ring is larger than the outer diameter of the central column, the height of the O-shaped ring is smaller than that of the central column, and the O-shaped ring is in sealing contact with the inner wall of the closed air chamber;
the outer diameters of the upper end disc and the lower end disc are both smaller than the inner diameter of the closed air chamber;
when the piston and the guide rod move in the closed air chamber, the grease passes through the oil passing structure.
As a preferred embodiment, the oil passing structure comprises a first oil passing groove or a first oil passing hole which is opened on the upper end disc;
the first oil passing groove is positioned on the lower surface of the upper end disc, and the O-shaped ring covers part of the first oil passing groove;
the first oil passing hole penetrates through the upper end disc from top to bottom, and the O-shaped ring and the first oil passing hole are arranged in a staggered mode.
As a preferred embodiment, the oil passing hole comprises a second oil passing groove or a second oil passing hole which is opened on the lower end disc;
the number of the second oil passing grooves is at least two, the second oil passing grooves are circumferentially and uniformly distributed at the outer edge of the lower end disc, the second oil passing grooves penetrate through the lower end disc from top to bottom, and the O-shaped rings cover part of the second oil passing grooves;
the number of the second oil passing holes is at least two, the second oil passing holes are circumferentially and uniformly distributed on the lower end disc, and the second oil passing holes penetrate through the lower end disc up and down and are arranged in a staggered mode with the O-shaped rings.
In a preferred embodiment, the upper end disc and the lower end disc are fixed together by a center pillar, or the upper end disc and the center pillar are fixed together, and the lower end disc and the center pillar are in a split structure.
In a preferred embodiment, through holes are formed in the middle positions of the upper end disc, the middle column and the lower end disc, and the guide rod is in sealing fit with the through holes.
After the technical scheme is adopted, the utility model has the beneficial effects that: according to the pneumatic rotary damping device, the movable piston and the grease are arranged in the closed air chamber, the oil passing structure for the grease to pass through is arranged on the piston, so that the guide rod can ensure normal work in the use process, the movement speed of the piston and the guide rod can be influenced by the grease, the liquid grease is additionally arranged on the basis that the rotation is realized only through gas in the prior art, the damping effect is realized, the passing speed of the grease is changed by changing the viscosity of the grease or/and the size of the oil passing structure, and the damping force is further changed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an open/close state according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a closed state according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram according to a first embodiment;
FIG. 4 is a schematic view of the piston of FIG. 3 with the lower end disc removed;
FIG. 5 is a schematic structural diagram of a split piston;
FIG. 6 is a schematic structural view of an integrated piston;
FIG. 7 is a schematic structural diagram of another embodiment;
FIG. 8 is a schematic view of the piston of FIG. 7 with the lower end disc removed;
FIG. 9 is a schematic view of a lower end disk;
FIG. 10 is a schematic view of another lower end disk;
in the figure: 1-a shell; 2-sealing the air chamber; 3-a piston; 31-upper end disc; 311-first oil passing groove; 312-a first oil passing hole; 32-a king post; 33-a lower end disc; 331-a second oil passing groove; 332-a second oil passing hole; 34-O-ring; 35-a through hole; 4-grease; 5-a guide rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, they are schematic diagrams of an open-close state and a closed state respectively, and the specific action principle and structure thereof refer to chinese utility model patent CN113047719A, which is not repeated herein. The utility model is further improved on the basis of the prior art, and the liquid grease is added on the basis of returning by only utilizing gas in the prior art, so that the harsh feeling of returning by only utilizing gas is eliminated, the damping effect is increased, and the use feeling of people is improved.
As shown in fig. 1 and 2, the utility model arranges a movable piston 3 and liquid grease 4 in a closed air chamber 2 formed by a shell 1, and also arranges a guide rod 5, wherein the guide rod 5 is connected on the piston 3 in a sealing way, and the upper end of the guide rod extends out of the closed air chamber 2 to push the above components to move. The piston 3 is also provided with an oil passing structure, when the utility model is switched between a figure 1 and a figure 2, the grease 4 can flow through the oil passing structure, so that the control of the rotating structure is realized by the grease, the damping effect is further realized, and the flowing speed of the grease 4 can be changed by controlling the viscosity of the grease 4 and the specific size of the oil passing structure, so as to control the speed of the rotary damping. The specific structure at the piston 3 will be described in detail below.
The first embodiment is as follows:
as shown in fig. 3 and 4, the piston 3 includes an upper end disc 31, a middle pillar 32 and a lower end disc 33, where the piston 3 is a split structure, that is, as shown in fig. 5, the upper end disc 31 and the middle pillar 32 are fixed as a whole, the lower end disc 33 is a single body, through holes 35 are formed at the middle positions of the upper end disc 31, the middle pillar 32 and the lower end disc 33, and the lower end of the guide rod 5 penetrates through the through holes 35 and is in sealing fit therewith.
The outer diameter of the center pillar 32 is smaller than the outer diameters of the upper end disc 31 and the lower end disc 33, the piston 3 formed by the three is dumbbell-shaped, and the outer diameters of the upper end disc 31 and the lower end disc 33 are smaller than the inner diameter of the closed air chamber 2, so that a gap is reserved between the upper end disc 31 and the closed air chamber 2, a gap is reserved between the lower end disc 33 and the closed air chamber 2, and grease 4 can flow from the gap.
The O-ring 34 is further sleeved on the center pillar 32, an outer diameter of the O-ring 34 is matched with the sealing air chamber 2, namely, the O-ring 34 is in sealing fit with the sealing air chamber 2, an inner diameter of the O-ring 34 is larger than an outer diameter of the center pillar 32, namely, a gap is also left between the O-ring 34 and the center pillar 32, the gap can allow the grease 4 to flow, in addition, the height of the O-ring 34 is also smaller than that of the center pillar 32, namely, the O-ring 34 can move between the upper end disc 31 and the lower end disc 33 along the center pillar 32.
As shown in fig. 4, the oil passing structure is a first oil passing groove 311 opened on the lower surface of the upper end disc 31, and a part of the first oil passing groove 311 is covered by the O-ring 34, and another part is located at the gap between the O-ring 34 and the middle column 32, so that the grease 4 can flow in or out from the first oil passing groove.
The oil passing structure further comprises second oil passing grooves 331 formed in the lower end disc 33, the number of the second oil passing grooves 331 is at least two (3 are shown in fig. 9), the second oil passing grooves 331 are circumferentially and uniformly distributed at the outer edge of the lower end disc 33 and vertically penetrate through the lower end disc 33, likewise, the O-ring 34 also covers a part of the second oil passing grooves 331, and the grease 4 can flow in or out from the uncovered part of the second oil passing grooves 331.
When the structure is in the open-close state shown in fig. 1, grease 4 is arranged above and below the piston 3, and when people rotate the device, the piston 3 and the guide rod 5 move upwards under the action of high-pressure gas in the closed air chamber 2, the O-ring 34 is in close contact with the lower end disc 33 at the moment, the O-ring 34 is separated from the upper end disc 31, the grease 4 above the piston 3 flows in from a gap between the upper end disc 31 and the closed air chamber 2, passes through a gap between the O-ring 34 and the middle column 32, and finally flows in from the second oil passing groove 331 at the outer edge of the lower end disc 33 to the position below the piston 3. Until the device is moved to the closed position shown in figure 2.
When the structure is in the closed state shown in fig. 2, grease 4 is only present under the piston 3, and when one rotates the device, the guide rod 5 presses down the piston 3 to move downwards under the action of the upper part, and the O-ring 34 is in close contact with the upper end disc 31, and the O-ring 34 is separated from the lower end disc 33. When the lower end disc 33 contacts the grease 4, the grease 4 flows in from the gap between the lower end disc 33 and the closed air chamber 2, passes through the gap between the O-ring 34 and the center pillar 32, enters the first oil passing groove 311 shown in fig. 4, flows to the gap between the upper end disc 31 and the closed air chamber 2 along the first oil passing groove 311, and finally flows to the upper side of the piston 3. Until the device is moved to the open and closed position shown in figure 1.
Example two:
the piston 3 in this embodiment is an integral structure shown in fig. 6, that is, the upper end disc 31, the center pillar 32 and the lower end disc 33 are fixed together, and the rest of the structure is the same as that in the first embodiment, and will not be described again.
Example three:
in this embodiment, the oil passing structure of the lower end disc 33 does not use the second oil passing groove 331, but uses the second oil passing holes 332 shown in fig. 10, the number of the second oil passing holes 332 is at least two (three are shown in the figure), the second oil passing holes 332 are circumferentially and uniformly distributed on the lower end disc 33, and the second oil passing holes 332 vertically penetrate through the lower end disc 33 and are staggered with the O-ring 34, that is, the second oil passing holes 332 are located right between the O-ring 34 and the middle column 32.
The rest of the structure of this embodiment is the same as that of the first embodiment, and will not be described herein again.
Example four:
the piston 3 of this embodiment does not adopt a split structure, but adopts an integrated structure shown in fig. 6, that is, the upper end disc 31, the center pillar 32 and the lower end disc 33 are fixed integrally.
The rest of the structure of this embodiment is the same as that of this embodiment, and is not described herein again.
Example five:
in this embodiment, the first oil passing groove 311 is not used in the upper end disc 31, but a first oil passing hole 312 shown in fig. 7 and 8 is used, and the first oil passing hole 312 extends up and down through the upper end disc 31 and is arranged in a staggered manner with the O-ring 34, that is, the first oil passing hole 312 is located right between the O-ring 34 and the middle pillar 32.
The rest of the structure of this embodiment is the same as that of the first embodiment, and will not be described herein again.
Example six:
the piston 3 of this embodiment adopts an integrated structure shown in fig. 6, and the rest of the structure is the same as that of the fifth embodiment, and is not described again here.
Example seven:
in this embodiment, the oil passing structure on the lower end disc 33 adopts the second oil passing hole 332 shown in fig. 10, and the rest of the structure is the same as that of the fifth embodiment, which is not described again.
Example eight:
the piston 3 of this embodiment adopts an integrated structure shown in fig. 6, and the rest of the structure is the same as that of the seventh embodiment, and is not described again here.
The rotary damping device is simple in integral structure and convenient to use, solves the problem that the rotary device does not have damping, can achieve the purpose of controlling the rotary damping speed by changing the depth or the diameter of a corresponding oil passing structure or the viscosity of grease, and is suitable for various doors and windows and various occasions needing rotary damping.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a pneumatic rotary damping device, includes the airtight air chamber that the casing formed which characterized in that: the oil filter is characterized in that a movable piston and oil are arranged in the closed air chamber, a guide rod is hermetically matched at the middle position of the piston, the upper end of the guide rod extends out of the closed air chamber, and an oil passing structure for the oil to pass through is arranged on the piston.
2. The aerodynamic rotational damping device of claim 1, wherein: the piston comprises an upper end disc, a middle column and a lower end disc which are arranged from top to bottom, wherein an O-shaped ring is sleeved on the middle column;
the inner diameter of the O-shaped ring is larger than the outer diameter of the central column, the height of the O-shaped ring is smaller than that of the central column, and the O-shaped ring is in sealing contact with the inner wall of the closed air chamber;
the outer diameters of the upper end disc and the lower end disc are both smaller than the inner diameter of the closed air chamber;
when the piston and the guide rod move in the closed air chamber, the grease passes through the oil passing structure.
3. The aerodynamic rotational damping device of claim 2, wherein: the oil passing structure comprises a first oil passing groove or a first oil passing hole which is formed in the upper end disc;
the first oil passing groove is positioned on the lower surface of the upper end disc, and the O-shaped ring covers part of the first oil passing groove;
the first oil passing hole penetrates through the upper end disc from top to bottom, and the O-shaped ring and the first oil passing hole are arranged in a staggered mode.
4. The aerodynamic rotation damping device of claim 2 or 3, wherein: the oil passing hole comprises a second oil passing groove or a second oil passing hole which is formed in the lower end disc;
the number of the second oil passing grooves is at least two, the second oil passing grooves are circumferentially and uniformly distributed at the outer edge of the lower end disc, the second oil passing grooves penetrate through the lower end disc from top to bottom, and the O-shaped rings cover part of the second oil passing grooves;
the number of the second oil passing holes is at least two, the second oil passing holes are circumferentially and uniformly distributed on the lower end disc, and the second oil passing holes penetrate through the lower end disc up and down and are arranged in a staggered mode with the O-shaped rings.
5. The aerodynamic rotational damping device of claim 2, wherein: the upper end disc and the lower end disc are fixed into a whole through a center pillar, or
The upper end disc and the middle column are fixed into a whole, and the lower end disc and the middle column are of a split structure.
6. The aerodynamic rotational damping device of claim 2, wherein: the middle positions of the upper end disc, the middle column and the lower end disc are all provided with through holes, and the guide rods are in sealing fit with the through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122140208.1U CN215718056U (en) | 2021-09-06 | 2021-09-06 | Pneumatic rotary damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122140208.1U CN215718056U (en) | 2021-09-06 | 2021-09-06 | Pneumatic rotary damping device |
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| Publication Number | Publication Date |
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| CN215718056U true CN215718056U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122140208.1U Active CN215718056U (en) | 2021-09-06 | 2021-09-06 | Pneumatic rotary damping device |
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| CN (1) | CN215718056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700694A (en) * | 2022-04-11 | 2022-07-05 | 承德特耐力门控科技有限公司 | Production process of pneumatic door closer |
-
2021
- 2021-09-06 CN CN202122140208.1U patent/CN215718056U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700694A (en) * | 2022-04-11 | 2022-07-05 | 承德特耐力门控科技有限公司 | Production process of pneumatic door closer |
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