CN203393811U - Air-pressure type actuating device - Google Patents
Air-pressure type actuating device Download PDFInfo
- Publication number
- CN203393811U CN203393811U CN201320492256.XU CN201320492256U CN203393811U CN 203393811 U CN203393811 U CN 203393811U CN 201320492256 U CN201320492256 U CN 201320492256U CN 203393811 U CN203393811 U CN 203393811U
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- Prior art keywords
- air bag
- expansion joint
- sleeve
- air
- actuating device
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Abstract
An air-pressure type actuating device comprises a bellows-type air bag with a vent at the bottom and a sleeve for containing the air bag. In the air bag stretching and retracting direction, the outer diameter of expansion joints on the upper portion and the lower portion of the air bag is larger than that of an expansion joint in the middle of the air bag. The outer diameter of the expansion joints on the upper portion and the lower portion of the air bag is larger than that of the expansion joint in the middle of the air bag, so that contact face between the air bag and the sleeve is greatly reduced, sliding friction resistance does not exist or hardly exists between the air bag and the sleeve when the air bag is stretched and retracted, air discharging efficiency and stretching and retracting sensitivity of the air bag responding to the air pressure are greatly improved, and reliability of pneumatic control functions is greatly improved.
Description
Technical field
The utility model relates to gas control actuating unit, particularly a kind of vapour-pressure type actuating device.
Background technology
At bathroom flushing device, start control field, by adopting mechanical vertical compression, electronic or pneumatic control, and affected by flushing device environment for use, flushing device often adopts pneumatic control mode to open and close, a kind of gas control as disclosed in Chinese utility model patent (CN201214811Y) draining valve processed, in stroke generating means 7.2 on it, the air cell covering 5 at top entangles air vesicle 6, air vesicle 6 tops are connected fixing with air cell covering 5 tops, air cell covering 5 tops are connected by shadoof 9 with exposing between the conduit 14 of valve body 16, by to air-control device 7 and air vesicle 6 corresponding hole post air inlets, air vesicle 6 drum pressure of being bullied plays jacking air cell covering 5, the shadoof 9 of air cell covering 5 through being attached thereto draws high conduit 14, make draining valve open draining, because air bag 6 designs at present mostly adopt the structure that upper and lower diameter dimension is equal, air cell covering 5 is straight tube inner chamber, air bag 6 is inflated in stretching process, the diameter of the air bag 6 of carrying external pressure surpasses air cell covering 5 internal diameters, or air bag 6 side direction arch upward and crooked contact with air cell covering 5 inwalls, the periphery wall that causes air bag 6 when flexible with air cell covering 5(sleeve) the larger sliding-frictional resistance of internal perisporium generation, thereby reduced the charging efficiency of air bag 6, make air bag 6 under gas pressure, activate hoisting gasbag cover 5 sensitivitys and reduce, gas control effect is affected.
Utility model content
For addressing the above problem, the utility model is intended to propose a kind of vapour-pressure type actuating device, by the matching structure improvement to air bag and sleeve, air bag is compacter with coordinating of sleeve, when airbag aeration axial stretching, the air bag bending of can side direction not arching upward during air bag top bearing pressure, and small expanded radially, its periphery wall of the expansion joint of air bag also can or can not produce friction with sleeve internal perisporium hardly, greatly improves the charging efficiency of air bag and the sensitivity of jacking sleeve.
For reaching above-mentioned purpose, the utility model proposes a kind of vapour-pressure type actuating device, comprise that bellows-type air bag and that a bottom has air vent is for holding the sleeve of air bag, it is characterized in that: in the flexible direction of air bag, the expansion joint external diameter of air bag top and bottom is greater than the expansion joint external diameter at air bag middle part.
Described air bag top is to air bag middle part, and the outside dimension of expansion joint successively decreases section by section; Air bag bottom is to air bag middle part, and the outside dimension of expansion joint successively decreases section by section; Make air bag more steady at axial stretching.
The expansion joint external diameter on described air bag top is less than or equal to and equals sleeve diameter, and the expansion joint external diameter of air bag bottom is less than the expansion joint external diameter on air bag top; Make the expansion joint on air bag can axial stretching motion in sleeve, and expansion joint and sleeve wall not can or hardly can with sleeve in produce frictional resistance, the inflation/deflation efficiency of raising air bag and the sensitivity of jacking sleeve.
Described air bag middle part at least has an expansion joint, make expansion joint outer wall and the sleeve lining at middle part possess larger folding retractable space, and because middle part expansion joint external diameter is less than the expansion joint external diameter of air bag top and bottom, make air bag more steady in axial stretching direction, avoid air bag to produce axially arching upward bending and produce sliding-frictional resistance with sleeve lining, affect the sensitivity of air bag axial stretching motion in sleeve.
Described sleeve roof is plane, and described air bag roof is lower cancave cambered surface, increases the contact area with sleeve roof while making the inflation valve for spreading of air bag, thereby reduces the driving force that drives air bag to expand.
In the utility model, also comprise that one is built in the gaseous core in air bag with guide cylinder, an insertion air vent of sleeve socket, gaseous core bottom is fixedly connected with guide cylinder bottom, and sleeve slides up and down and coordinates with it in guide cylinder.By gaseous core, air bag is charged and discharged to air, the expansion joint that stretches out guide cylinder and air bag to realize the expansion joint spreading jacking sleeve of air bag shrinks the function that folds the sleeve indentation guide cylinder of pulling back.
Described air bag bottom also arranges an installation portion, and described air vent, in installation portion, also separately arranges an installation portion and tightens the sealing shroud being fixed on gaseous core; Gaseous core inserts air bag by air vent, then by tightening at installation portion socket sealing shroud, the air vent of air bag and gaseous core formation is sealedly connected and fixed.
The beneficial effects of the utility model are: the expansion joint external diameter of air bag top and bottom is greater than the expansion joint external diameter at air bag middle part, greatly reduce the contact surface of air bag and sleeve, while making air bag flexible and between sleeve, there is no or almost do not have sliding-frictional resistance, greatly improve the inflation/deflation efficiency of air bag and respond air pressure and flexible sensitivity, greatly improving the reliability of the utility model pneumatic control function.
Accompanying drawing explanation
Fig. 1 is three-dimensional assembling structure decomposing schematic representation of the present utility model.
Fig. 2 is the structural representation of the utility model air bag.
Fig. 3 is the structure cut-away view of the utility model air bag.
Fig. 4 is that the structure after the utility model assembling is cutd open schematic diagram.
Accompanying drawing sign in figure: 10. air bag; A. air bag top; B. air bag bottom; C. in the middle part of air bag; The expansion joint on 11. air bag tops; The expansion joint of 12. air bag bottoms; The expansion joint at 13. air bag middle parts; 14. times cancave cambered surfaces; 15. installation portions; 16. positioning clamping pin; 17. air vents; 20. sleeves; 21. barrel bores; 211. sleeve lining; 22. sleeve roofs; 23. spliced eyes; 30. guide cylinders; 40. gaseous cores; 50. sealing shrouds; 60. flexible pipes.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
A kind of vapour-pressure type actuating device as shown in Figure 1 and Figure 4, comprise a bellows-type air bag 10, one for hold air bag 10 sleeve 20, one and sleeve 20 guide cylinder 30, that the slides up and down socket gaseous core 40 and that is fixed on guide cylinder 30 bottoms and inserts air bag 10 air bag 10 sealing shroud 50 with gaseous core 40 sealings.
As shown in Figures 2 and 3, on air bag 10 of the present utility model is axial, be divided into air bag top A, air bag bottom B and be connected to the air bag middle part C between air bag top A, air bag bottom B, air bag top A has three joint expansion joints, the expansion joint 11 on air bag top is air bag top A top one joint, under the outer radial of the three joint expansion joints of air bag top A, successively decrease section by section successively, be air bag 10 tops to air bag middle part C, the outside dimension of expansion joint successively decreases, air bag 10 roofs are cancave cambered surface 14, in the middle of lower cancave cambered surface 14, fix a positioning clamping pin 16; Air bag bottom B has three joint expansion joints, the expansion joint 12 of air bag bottom is air bag bottom B lowermost end one joint, on the outer radial of the three joint expansion joints of air bag bottom B, successively decrease section by section successively, be air bag 10 bottoms to air bag middle part C, the outside dimension of expansion joint successively decreases, and air bag bottom also arranges an installation portion 15, the air vent 17 for communicating with air bag 10 inner chambers in the middle of installation portion 15; Air bag middle part C has four joint expansion joints 13, and wherein, the external diameter of the expansion joint 13 at air bag middle part is less than the expansion joint external diameter of air bag top A and air bag bottom B, and preferred, expansion joint 12 external diameters of air bag bottom are less than expansion joint 11 external diameters on air bag top.
As shown in Figure 1 and Figure 4, sleeve 20 of the present utility model has the barrel bore 21 that holds air bag 10, and sleeve top is the sleeve roof 22 of a plane, is provided with a spliced eye 23 in the middle of sleeve roof 22; Sleeve 20 internal diameters equal expansion joint 11 external diameters on air bag top.
Describe assembling of the present utility model below in detail.
As shown in Figure 1 and Figure 4, first gaseous core 40 is inserted to air bag 10 inner chambers by the air vent 17 on installation portion 15, gaseous core 40 is built in air bag 10, installation portion 15 is socketed on gaseous core 40, then by sealing shroud 50, be socketed in installation portion 15 outer walls, make to form and be tightly connected between air vent 17 and the installation portion 15 of air bag 10, then avoiding the air in air bag 10 to leak with the air inlet port that hand is blocked gaseous core 40 after air bag 10 inflation, then air bag 10 is upwards inserted in barrel bore 21, firmly pressuring gasbag 10 makes positioning clamping pin 16 on the lower cancave cambered surface 14 of air bag 10 roofs through the spliced eye 23 in the middle of sleeve roof 22, positioning clamping pin 16 is fixed with spliced eye 23 doggings, the expansion joint 11 that is A top, air bag top is connected and fixed with sleeve roof 22, make to be placed in sleeve 20 in air bag 10, expansion joint 11 edge and the sleeve roof 22 on air bag top contact mutually, and expansion joint 11 and the sleeve lining 211 on air bag top are affixed tactile, other expansion joint of air bag top A, the expansion joint of air bag bottom B and air bag middle part C all with sleeve lining 211 matched in clearance, then sleeve 20 is inserted in downwards in guide cylinder 30, sleeve 20 slides up and down and coordinates with guide cylinder 30, then pressing down gaseous core 40 makes gaseous core 40 be fixedly connected on guide cylinder 30 bottoms, complete assembly connection of the present utility model, then flexible pipe 60 and gaseous core 40 bottoms input air pressure used are connected and fixed, and can use.
Describe operating principle of the present utility model and concrete enforcement action below in detail.
As shown in Figure 4, to flexible pipe 60 input forced airs, forced air enters in bellows-type air bag 10 by gaseous core 40, the air bag top A that air bag 10 is axial, the expansion joint axial expansion of air bag bottom B and air bag middle part C is flexible, the expansion joint 11 at A top, air bag top upwards top gland cylinder 20 stretches out guide cylinder 30, because sleeve 20 roofs 22 are loaded with the pressure of bathroom controlled switch, therefore the suffered air pressure of air bag 10 is greater than atmospheric pressure, therefore can make the expansion joint 11 on the air bag 10 of rubber system, 12, 13 have small expanded support diametrically, because the expansion joint external diameter of the outer radial air bag middle part C of the expansion joint on air bag top A and air bag bottom B successively decreases, and the external diameter that is subject to the expansion joint 13 at the air bag middle part that air pressure has the greatest impact is less than the expansion joint external diameter of air bag top A and air bag bottom B, therefore except the expansion joint 11 and sleeve lining 221 compressions on air bag top, the expansion joint of air bag bottom B and air bag middle part C can not contact generation sliding-frictional resistance with sleeve lining 221, and air bag 10 can not be out of shape arch in the axial direction to sleeve lining 221, therefore the response speed of the 10 pairs of air pressure change of air bag in sleeve 20 is faster, makes the inflation/deflation efficiency of air bag 10 higher, the stretching motion of air bag 10 in sleeve 20 more steadily, sensitiveer.
Expansion joint joint number on the utility model air bag top A, air bag bottom B and air bag middle part C can need to adjust according to practical structures.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, those skilled in the art, in the situation that not departing from spirit and scope of the present utility model, can also make various conversion or variation.Therefore, all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (7)
1. a vapour-pressure type actuating device, comprise that bellows-type air bag and that a bottom has air vent is for holding the sleeve of air bag, it is characterized in that: in the flexible direction of air bag, the expansion joint external diameter of air bag top and bottom is greater than the expansion joint external diameter at air bag middle part.
2. a kind of vapour-pressure type actuating device as claimed in claim 1, is characterized in that: described air bag top is to air bag middle part, and the outside dimension of expansion joint successively decreases section by section; Air bag bottom is to air bag middle part, and the outside dimension of expansion joint successively decreases section by section.
3. a kind of vapour-pressure type actuating device as claimed in claim 1, is characterized in that: the expansion joint external diameter on described air bag top is less than or equal to sleeve diameter, and the expansion joint external diameter of air bag bottom is less than the expansion joint external diameter on air bag top.
4. a kind of vapour-pressure type actuating device as claimed in claim 1, is characterized in that: described air bag middle part at least has an expansion joint.
5. a kind of vapour-pressure type actuating device as claimed in claim 1, is characterized in that: described sleeve roof is plane, and described air bag roof is lower cancave cambered surface.
6. a kind of vapour-pressure type actuating device as claimed in claim 1, it is characterized in that: also comprise that one is built in the gaseous core in air bag with guide cylinder, an insertion air vent of sleeve socket, gaseous core bottom is fixedly connected with guide cylinder bottom, and sleeve slides up and down and coordinates with it in guide cylinder.
7. a kind of vapour-pressure type actuating device as claimed in claim 6, is characterized in that: described air bag bottom also arranges an installation portion, and described air vent, in installation portion, also separately arranges an installation portion and tightens the sealing shroud being fixed on gaseous core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492256.XU CN203393811U (en) | 2013-08-13 | 2013-08-13 | Air-pressure type actuating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492256.XU CN203393811U (en) | 2013-08-13 | 2013-08-13 | Air-pressure type actuating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203393811U true CN203393811U (en) | 2014-01-15 |
Family
ID=49905351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320492256.XU Expired - Lifetime CN203393811U (en) | 2013-08-13 | 2013-08-13 | Air-pressure type actuating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203393811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985068A (en) * | 2019-11-27 | 2020-04-10 | 中铁隧道局集团建设有限公司 | Novel tunnel secondary lining end water-stopping sealing dual-purpose water-stopping belt |
-
2013
- 2013-08-13 CN CN201320492256.XU patent/CN203393811U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985068A (en) * | 2019-11-27 | 2020-04-10 | 中铁隧道局集团建设有限公司 | Novel tunnel secondary lining end water-stopping sealing dual-purpose water-stopping belt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |
|
| CX01 | Expiry of patent term |