CN107521704B - Injection device and air door assembly thereof - Google Patents
Injection device and air door assembly thereof Download PDFInfo
- Publication number
- CN107521704B CN107521704B CN201710640268.5A CN201710640268A CN107521704B CN 107521704 B CN107521704 B CN 107521704B CN 201710640268 A CN201710640268 A CN 201710640268A CN 107521704 B CN107521704 B CN 107521704B
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- air door
- clamp plate
- pressing plate
- air
- door clamp
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- 238000002347 injection Methods 0.000 title claims abstract description 52
- 239000007924 injection Substances 0.000 title claims abstract description 52
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 238000009423 ventilation Methods 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 description 17
- 238000005452 bending Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D25/00—Emergency apparatus or devices, not otherwise provided for
- B64D25/08—Ejecting or escaping means
- B64D25/14—Inflatable escape chutes
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to an injection device and an air door assembly thereof, wherein the injection device comprises a shell, the shell is provided with an air door end, an air door assembly is arranged in the air door end, the air door assembly comprises an end cover, an air door hole is formed in the end cover, an air door pressing plate which can open and close the air door hole through rotation is arranged on the inner side of the end cover, the air door pressing plate is provided with a pressure bearing surface for forming pressure difference on the air door pressing plate to control the opening and closing of the air door pressing plate, and an elastic device which can apply force to the air door pressing plate to close the air door pressing plate is. When the opening angle of the air door pressing plate is larger, the acting force provided by the elastic device to the air door pressing plate and forcing the air door pressing plate to close is larger, and the sufficient closing pressure of the air door pressing plate under the condition of larger opening angle can be ensured.
Description
Technical Field
The invention relates to an injection device and an air door assembly thereof.
Background
The civil aircraft emergency evacuation slide is an important system for ensuring that personnel on an aircraft can safely and quickly evacuate the aircraft under the condition that the aircraft needs emergency landing due to an accident, is directly related to the life safety of the personnel, and is an indispensable key device of the civil aircraft. The emergency evacuation slide is generally provided with a high-pressure gas cylinder to inflate the emergency evacuation slide and ensure sufficient gas pressure when the emergency evacuation slide is used, but because the gas quantity of the high-pressure gas cylinder is insufficient and the like, the gas pressure when the emergency evacuation slide is used cannot be met only by the high-pressure gas cylinder, and an injection device is needed to be provided to ensure the gas pressure when the emergency evacuation slide is used by utilizing the atmosphere.
The Chinese patent application with the application publication number of CN 102039993A and the application publication number of 2011.05.04 discloses an injection device for a life-saving air bag, which comprises a shell, wherein one end of the shell is a gas inlet end used for communicating a high-pressure gas inlet, the other end of the shell is a gas outlet end used for communicating the air bag, the last end of the shell is a damper end used for communicating the outside atmosphere, and the three ends are communicated with each other; the air door assembly is arranged on the air door end and comprises an end cover arranged on the air door end, an air door hole is formed in the end cover, an air door pressing plate capable of opening and closing the air door hole through elastic deformation under the action of air pressure on two sides of the air door hole is fixed on the inner side of the end cover, semicircular pressing iron is embedded into semicircular parts at two ends of the air door pressing plate and can completely cover the corresponding air door hole, and a groove with a groove surface facing the inner side of the air door is formed between the middle fixing part and the semicircular parts at the two ends; the damper assembly further includes a damper closing mechanism for maintaining the wind pressure plate in a closed state trend, the damper closing mechanism including a magnet block disposed on the end cap. The air door pressing plate is kept in a closed state by the aid of the attraction force of the magnet blocks and the magnets embedded in the air door pressing plate, and the air door pressing plate is closed by the aid of air pressure and the magnet attraction force after the life-saving air bag is inflated.
The injection device can be used for injecting high-pressure gas into the high-pressure inflation bottle from the gas inlet end when the lifesaving air bag is inflated, the air door end generates air pressure difference and opens the air door pressing plate by utilizing the injection principle, external atmosphere enters the injection device and is discharged from the gas outlet end along with the high-pressure gas, and the air door pressing plate is closed by utilizing the air pressure difference between the air bag and the atmosphere and the suction force of the magnet after the lifesaving air bag is inflated. However, when the opening angle of the air door pressing plate is large, the suction force between the magnet block and the air door pressing plate is reduced, the effective area of the air acting on the air door pressing plate is also reduced, and sufficient closing pressure cannot be provided for the air door pressing plate.
Disclosure of Invention
The invention aims to provide an air door component which can provide enough closing pressure for an air door pressure plate when the opening angle of the air door pressure plate is larger; the invention also provides an injection device using the air door component.
In order to solve the technical problem, a first technical scheme of the injection device provided by the invention is as follows: the utility model provides an injection apparatus, includes the casing, and the casing has the air of introduction and is the air door end, be equipped with air door subassembly in the air door end, this air door subassembly includes the end cover, is equipped with the air door hole on the end cover, and the end cover inboard is equipped with through rotating in order to open and shut the air door clamp plate in the air door hole, the air door clamp plate have be used for forming the pressure differential above that with the bearing surface that the control air door clamp plate opened and shut, air door clamp plate inboard is equipped with to apply the resilient means who forces the air door clamp plate to close.
The technical scheme has the beneficial effects that: when the opening angle of the air door pressing plate is larger, the acting force provided by the elastic device to the air door pressing plate and forcing the air door pressing plate to close is larger, and the sufficient closing pressure of the air door pressing plate under the condition of larger opening angle can be ensured.
The second technical scheme of the injection device is as follows: on the basis of the first technical scheme of the injection device, the air door pressing plate comprises a fixed part and a semicircular part, wherein the middle of the fixed part is fixed on the support, two ends of the semicircular part can respectively rotate around the fixed part to open and close an air door hole, and the pressure bearing surfaces are end surfaces on two sides of the semicircular part.
The technical scheme has the beneficial effects that: the air door hole is opened and closed in a mode of rotating from two sides through the matching of the semicircular part and the fixed part, so that the air door is convenient to open.
The third technical scheme of the injection device is as follows: on the basis of the second technical scheme of the injection device, the elastic device comprises a spring and a connecting rod mechanism which is connected with the spring and is used for driving the air door pressing plate to open and close.
The technical scheme has the beneficial effects that: the air door pressing plate is provided with closing pressure in a mode of matching the connecting rod mechanism with the spring, and the air door pressing plate is simple in structure and convenient to use.
The fourth technical scheme of the injection device is as follows: on the basis of the third technical scheme of the injection device, the connecting rod mechanism comprises a sliding guide sleeve which is in jacking assembly with the spring and can axially move along the compression direction of the spring, and a connecting rod, one end of which is fixed on the bearing surface of the air door pressure plate, and the other corresponding end of which is arranged on the sliding guide sleeve.
The technical scheme has the beneficial effects that: the sliding guide sleeve facilitates the connection of the connecting rod mechanism and the spring, and meanwhile, the pressure borne by the spring is more uniform.
The fifth technical scheme of the injection device is as follows: on the basis of the fourth technical scheme of the injection device, the connecting rod mechanism comprises at least one group of connecting rod groups, and each connecting rod group comprises two connecting rods which are arranged in a crossed mode.
The technical scheme has the beneficial effects that: the connecting rods are arranged in a crossed mode, so that the stroke of the connecting rods can be increased, and the closing pressure provided for the air door pressing plate is enhanced.
The sixth technical scheme of the injection device is as follows: on the basis of the fifth technical scheme of the injection device, the elastic device further comprises a spring seat used for bearing the corresponding end of the spring, a guide rod is arranged on the spring seat, and the sliding guide sleeve moves axially along the guide rod.
The technical scheme has the beneficial effects that: the spring seat facilitates installation of the spring, and the guide rod enables the spring not to deviate in the direction during compression.
The seventh technical scheme of the injection device is as follows: on the basis of the sixth technical scheme of the injection device, a semicircular iron weight is embedded in the air door pressing plate, a groove with a groove surface deviating from the air door pressing plate is arranged between the semicircular part and the fixed part of the air door pressing plate, rubber is vulcanized outside the semicircular iron weight and the groove, and fabric is arranged in a rubber layer of the groove part.
The technical scheme has the beneficial effects that: the semicircular iron weights increase the strength of the air door pressing plate, the groove enables the air door pressing plate to be opened and closed more conveniently, the rubber increases the toughness of a bending part when the air door pressing plate is opened and closed, and the fabric increases the strength of the bending part when pure rubber is used.
The eighth technical scheme of the injection device of the invention is as follows: on the basis of any one of the first technical scheme to the seventh technical scheme of the injection device, the end cover comprises a sealing ring which is detachably assembled and a support which is radially arranged on the sealing ring, and the sealing ring and the support are matched to form an air door hole.
The technical scheme has the beneficial effects that: the sealing ring and the injection device are detachably assembled, so that the air door assembly is more convenient to install and disassemble.
The ninth technical scheme of the injection device is as follows: on the basis of the eighth technical scheme of the injection device, the injection device further comprises an air outlet end provided with a nozzle assembly, and the elastic device is fixed on the nozzle assembly.
The technical scheme has the beneficial effects that: the elastic device is directly fixed on the nozzle, so that the connecting structure of the elastic device is simplified, and the processing is convenient.
The first technical scheme of the air door component of the invention is as follows: the utility model provides an air door subassembly, includes the end cover, is equipped with the air door hole on the end cover, and the end cover inboard is equipped with through rotating in order to open and shut the air door clamp plate in air door hole, the air door clamp plate has and is used for forming the pressure differential above that in order to control the bearing surface that the air door clamp plate opened and shut, air door clamp plate inboard is equipped with and exerts the resilient means who forces the air door clamp plate to close the effort to the air door clamp plate.
The technical scheme has the beneficial effects that: when the opening angle of the air door pressing plate is larger, the acting force provided by the elastic device to the air door pressing plate and forcing the air door pressing plate to close is larger, and the sufficient closing pressure of the air door pressing plate under the condition of larger opening angle can be ensured.
The second technical scheme of the air door component of the invention is as follows: on the basis of the first technical scheme of the air door assembly, the air door pressing plate comprises a fixed part and a semicircular part, the middle of the fixed part is fixed on the support, two ends of the semicircular part can respectively rotate around the fixed part to open and close the air door hole, and the pressure bearing surfaces are two side end surfaces of the semicircular part.
The technical scheme has the beneficial effects that: the air door hole is opened and closed in a mode of rotating from two sides through the matching of the semicircular part and the fixed part, so that the air door is convenient to open.
The third technical scheme of the air door component of the invention is as follows: on the basis of the second technical scheme of the air door assembly, the elastic device comprises a spring and a connecting rod mechanism which is connected with the spring and is used for driving the air door pressing plate to open and close.
The technical scheme has the beneficial effects that: the air door pressing plate is provided with closing pressure in a mode of matching the connecting rod mechanism with the spring, and the air door pressing plate is simple in structure and convenient to use.
The fourth technical scheme of the air door component of the invention is as follows: on the basis of the third technical scheme of the air door assembly, the connecting rod mechanism comprises a sliding guide sleeve which is in jacking assembly with the spring and can axially move along the compression direction of the spring, and a connecting rod, one end of the connecting rod is fixed on the pressure bearing surface of the air door pressure plate, and the other corresponding end of the connecting rod is arranged on the sliding guide sleeve.
The technical scheme has the beneficial effects that: the sliding guide sleeve facilitates the connection of the connecting rod mechanism and the spring, and meanwhile, the pressure borne by the spring is more uniform.
The fifth technical scheme of the air door component comprises the following steps: on the basis of the fourth technical scheme of the air door assembly, the connecting rod mechanism comprises at least one group of connecting rod groups, and each connecting rod group comprises two connecting rods which are arranged in a crossed mode.
The technical scheme has the beneficial effects that: the connecting rods are arranged in a crossed mode, so that the stroke of the connecting rods can be increased, and the closing pressure provided for the air door pressing plate is enhanced.
The sixth technical scheme of the air door component of the invention is as follows: on the basis of the fifth technical scheme of the air door assembly, the elastic device further comprises a spring seat used for bearing the corresponding end of the spring, a guide rod is arranged on the spring seat, and the sliding guide sleeve moves axially along the guide rod.
The technical scheme has the beneficial effects that: the spring seat facilitates installation of the spring, and the guide rod enables the spring not to deviate in the direction during compression.
The seventh technical scheme of the air door component of the invention is as follows: on the basis of the sixth technical scheme of the air door assembly, a semicircular iron weight is embedded in the air door pressing plate, a groove with a groove surface deviating from the air door pressing plate is arranged between the semicircular part and the fixing part of the air door pressing plate, rubber is vulcanized outside the semicircular iron weight and the groove, and fabric is arranged in the rubber layer of the groove part.
The technical scheme has the beneficial effects that: the semicircular iron weights increase the strength of the air door pressing plate, the groove enables the air door pressing plate to be opened and closed more conveniently, the rubber increases the toughness of a bending part when the air door pressing plate is opened and closed, and the fabric increases the strength of the bending part when pure rubber is used.
The eighth technical scheme of the air door component of the invention is as follows: in any one of the first to seventh aspects of the damper assembly of the present invention, the end cap includes a detachably fitted seal ring and a bearing radially provided on the seal ring, and the seal ring and the bearing cooperate to form the damper opening.
The technical scheme has the beneficial effects that: the sealing ring can be disassembled, so that the air door assembly can be more conveniently assembled and disassembled.
Drawings
Fig. 1 is a schematic structural view of an injection device according to embodiment 1 of the present invention;
FIG. 2 is a top view of the induction apparatus of the present invention of FIG. 1;
FIG. 3 is a left side view of the induction apparatus of the present invention of FIG. 1;
fig. 4 is a schematic structural view of an open state of a damper in embodiment 1 of the injection apparatus according to the present invention;
fig. 5 is a schematic structural view of a damper assembly of embodiment 1 of the injection apparatus of the present invention;
FIG. 6 is a sectional view taken along A-A of the damper assembly of FIG. 5;
FIG. 7 is a schematic view of an air inlet valve of the injector of the present invention;
FIG. 8 is a schematic view of a nozzle assembly of the induction apparatus of the present invention;
fig. 9 is a top view of the nozzle assembly of fig. 8.
The respective symbols in the figure: 1. an air duct; 2. an intake valve; 3. an air inlet joint; 4. a nozzle assembly; 5. a housing; 6. a seal ring; 7. a support; 8. a damper pressing plate; 9. pressing iron of the air door; 10. pressing iron; 11. connecting blocks; 12. riveting; 13. a cushion pad; 14. a sliding guide sleeve; 15. a connecting rod; 16. a spring; 17. a guide bar; 18. a spring seat; 19. a nozzle; 20. a pin; 21. rubber; 22. a fabric; 23. a groove; 24. a valve body; 25. a seal ring; 26. a limiting guide sleeve; 27. a valve body spring; 28. a valve core; 29. an air inlet nozzle.
Detailed Description
An embodiment 1 of the injection device of the present invention is shown in fig. 1 to 9, and includes a three-way housing 5, one end of the housing 5 is a gas inlet end communicated with a high-pressure gas inlet, one end is a gas outlet end for discharging gas, and the last end is a damper end communicated with the outside atmosphere, and the three ends are communicated with each other.
Be equipped with air inlet connector 3 on the inlet end of casing 5, the one end welding of air inlet connector 3 is on casing 5, corresponding other end threaded connection has admission valve 2, admission valve 2 includes valve body 24, be equipped with the pipeline that is used for communicateing the casing inside in the valve body 24, be equipped with the check valve that makes gas can only follow pipeline air inlet to gas outlet one-way flow in the pipeline, this check valve includes that the integrative suction nozzle 29 that sets up of one end that air inlet connector was kept away from to valve body 24 and along pipeline extending direction clearance fit, sliding assembly's case 28, case 28 and suction nozzle 28 have mutual thrust complex thrust terminal surface, the one end that the suction nozzle was kept away from to case 28 is equipped with spacing guide pin bushing 26, the roof pressure is equipped with the valve body spring 27 that is used for making case 28 top tighten suction nozzle 29 between spacing guide pin bushing 26 and the case.
The end of giving vent to anger of casing 5 is connected with tuber pipe 1, is provided with nozzle assembly 4 in the end of giving vent to anger, and in this embodiment, nozzle assembly 4 welds on casing 5, also can fix on the casing through bolt etc. in other embodiments, and evenly distributed has 18 nozzles 19 on nozzle assembly's the terminal surface, and the efficiency of multiplicable giving vent to anger is in order to adapt to the bigger induction apparatus of volume, and nozzle 19 stretches into tuber pipe 1, and tuber pipe 1 can be connected with the equipment that needs to aerify.
The air door end of the shell 5 is internally provided with an air door assembly, the air door assembly comprises an end cover formed by a sealing ring 6 and a support 7 radially arranged on the sealing ring, the sealing ring 6 is detachably assembled with the shell 5 through a pin 20 arranged on the outer side of the sealing ring, and the sealing ring 6 is matched with the support 7 to form an air door hole; the inner side of the sealing ring is provided with an air door pressing plate 8 which is opened and closed through rotation, the two ends of the air door pressing plate 8 are semicircular parts which are opened and closed through elastic deformation, the middle part of the air door pressing plate 8 is a fixed part which is connected with the supporting 7, the air door pressing plate 8 is provided with a bearing surface which is used for forming pressure difference on the bearing surface to control the opening and closing of the air door pressing plate 8, the bearing surface in the embodiment is a semicircular part, the semicircular part of the air door pressing plate 8 can completely cover the corresponding air door hole, the fixed part of the air door pressing plate 8 is embedded with a pressing iron 10, the fixed part fixedly connects the pressing iron 10, the air door pressing plate 8 and the supporting 7 through screws, the semicircular part of the air door pressing plate 8 is embedded with a semicircular air door pressing iron 9, a groove 23 is arranged between the fixed part and the semicircular part of the air door pressing plate 8, the outer layer, so as to increase the strength of the bending part when pure rubber is used; the air door assembly also comprises an elastic device which is arranged on the inner side of the air door pressing plate 8 and applies acting force to the pressure-bearing surface of the air door pressing plate 8 to force the air door pressing plate 8 to close, the elastic device comprises a spring 16 and a connecting rod mechanism which is connected with the spring 16 and is used for driving the air door pressing plate 8 to open and close, the elastic device also comprises a spring seat 18, the spring seat 18 is fixed on the nozzle assembly 4 so as to simplify the structure of the spring seat, the spring seat 18 is provided with a guide rod 17 which extends axially, the connecting rod mechanism comprises a sliding guide sleeve 14 which is assembled with the spring 16 in a jacking way and can axially move along the compression direction of the spring and a connecting rod 15, one end of the sliding guide sleeve is fixed on the pressure-bearing surface of the air door pressing plate 8, the other corresponding end of the sliding guide sleeve 14 is arranged on the connecting rod 15, the semicircular parts of the air door pressing plates 8 are respectively provided with a connecting block 11, the connecting blocks 11 are fixed on the air door pressing plates 8 through rivets 12, and connecting rods 15 are respectively fixedly connected with the corresponding connecting blocks 11; the semicircular part of the air door pressing plate is provided with a buffer cushion 13, and the buffer cushion 13 can buffer the contact pressure between the air door pressing plate and the spring seat after the air door pressing plate is opened.
When the injection device is used, an air pipe at an air outlet end is connected with equipment to be inflated, an air inlet nozzle of an air inlet valve at the air inlet end is connected with a high-pressure air bottle, the high-pressure air bottle is opened to fill high-pressure air into the injection device, the high-pressure air enters the equipment to be inflated at a high speed from a nozzle of the injection device, negative pressure is formed in a cavity of the injection device, air and the cavity of the injection device form an air pressure difference, pressure generated by the air pressure difference acts on the air door pressure plate to open the air door pressure plate, and external air enters the equipment to be inflated together with the high-pressure air; when the valve core is inflated to a state that the pressure of gas in the equipment and the pressure of the valve body spring are greater than the pressure of high-pressure gas, the valve core is contacted with the gas inlet nozzle to form a block, and the high-pressure gas is prevented from flowing backwards; when the internal pressure of the equipment needing inflation and the spring pressure of the air door opening and closing device are equal to or greater than the external atmospheric pressure, the air door pressing plate closes the air door hole and is kept closed by the spring pressure to prevent the air from flowing out of the air door hole.
The embodiment 2 of the injection device of the present invention is different from the embodiment 1 only in that: a fixed rod is arranged in the injection device, and the spring seat is fixed on the fixed rod.
The embodiment 3 of the injection device of the present invention is different from the embodiment 1 only in that: the fabric in the rubber layer of the groove portion is omitted and the bent portion of the damper pressure plate maintains strength by means of the rubber.
The embodiment 4 of the injection device of the present invention is different from the embodiment 1 only in that: the air door pressure plate is two split semicircular door plates with two sides hinged on the sealing ring and the middle part pressed on the support.
The embodiment 5 of the injection device of the present invention is different from the embodiment 1 only in that: the end cover and the shell are integrally arranged, and a semicircular air door hole is formed in the middle of the end cover.
The embodiment 6 of the injection device of the present invention is different from the embodiment 1 only in that: the spring seat of the elastic device is omitted, and the spring is directly pressed and assembled on the nozzle assembly.
The embodiment 8 of the injection device of the present invention is different from the embodiment 1 only in that: the elastic device comprises a spring seat fixed on the injection device, and oblique springs are respectively jacked and assembled between the spring seat and the two semicircular parts of the air door pressing plate.
The invention also provides an embodiment of the air door assembly, which is shown in fig. 1 to 6, and the specific structure of the embodiment is the same as that of the air door assembly in the injection device, and the detailed description is omitted here.
Claims (9)
1. The utility model provides an air door subassembly, includes the end cover, is equipped with the air door hole on the end cover, and the end cover inboard is equipped with through rotating in order to open and shut the air door clamp plate in air door hole, the air door clamp plate has and is used for forming pressure differential in order to control the bearing surface that the air door clamp plate opened and shut above that, its characterized in that: the utility model discloses a ventilation door clamp plate, including the air door clamp plate, the air door clamp plate is used for the air door clamp plate to be fixed, including the air door clamp plate inboard be equipped with to the air door clamp plate exert the elastic device that forces the air door clamp plate to close the effort, the end cover includes demountable assembly's sealing ring and the radial supporting that sets up on the sealing ring, and sealing ring and supporting cooperation form the air door hole, the air door clamp plate is fixed including the centre the fixed part and both ends on the supporting can be respectively around the semicircle part rotation in order to open and shut the air door hole, the bearing surface is semicircle partial both sides terminal surface, elastic device include the spring and with spring coupling be used for driving the link mechanism that the air door clamp plate opened and shut, link mechanism includes with the spring roof pressure assembly can follow the sliding guide bush of.
2. The damper assembly of claim 1, wherein: the connecting rod mechanism comprises at least one group of connecting rod group, and the connecting rod group comprises two connecting rods which are arranged in a crossed mode.
3. The damper assembly of claim 2, wherein: the elastic device further comprises a spring seat used for bearing the corresponding end of the spring, a guide rod is arranged on the spring seat, and the sliding guide sleeve moves axially along the guide rod.
4. The damper assembly of claim 3, wherein: the air door pressing plate is embedded with a semicircular iron weight, a groove is formed between the semicircular part and the fixed part of the air door pressing plate, rubber is vulcanized outside the semicircular iron weight and the groove, and fabric is arranged in a rubber layer of the groove part.
5. The utility model provides an injection apparatus, includes the casing, and the casing has the air door end of introducing the air, be equipped with air door subassembly in the air door end, this air door subassembly includes the end cover, is equipped with the air door hole on the end cover, and the end cover inboard is equipped with through rotating in order to open and shut the air door clamp plate in air door hole, the air door clamp plate has and is used for forming pressure differential on it with the pressure-bearing face that control air door clamp plate opened and shut, its characterized in that: the utility model discloses a ventilation door clamp plate, including the air door clamp plate, the air door clamp plate is used for the air door clamp plate to be fixed, including the air door clamp plate inboard be equipped with to the air door clamp plate exert the elastic device that forces the air door clamp plate to close the effort, the end cover includes demountable assembly's sealing ring and the radial supporting that sets up on the sealing ring, and sealing ring and supporting cooperation form the air door hole, the air door clamp plate is fixed including the centre the fixed part and both ends on the supporting can be respectively around the semicircle part rotation in order to open and shut the air door hole, the bearing surface is semicircle part's both sides terminal surface, elastic device includes the spring and with spring coupling be used for driving the link mechanism that the air door clamp plate opened and shut, link mechanism includes and fixes the connecting rod on the sliding guide cover with the sliding.
6. The ejector device according to claim 5, wherein: the connecting rod mechanism comprises at least one group of connecting rod group, and the connecting rod group comprises two connecting rods which are arranged in a crossed mode.
7. The ejector device according to claim 6, wherein: the elastic device further comprises a spring seat used for bearing the corresponding end of the spring, a guide rod is arranged on the spring seat, and the sliding guide sleeve moves axially along the guide rod.
8. The ejector device as claimed in claim 7, wherein: the air door pressing plate is embedded with a semicircular iron weight, a groove with a groove surface deviating from the air door pressing plate is arranged between the semicircular part and the fixing part of the air door pressing plate, rubber is vulcanized outside the semicircular iron weight and the groove, and a fabric is arranged in the rubber layer of the groove part.
9. The ejector device according to claim 5, wherein: the injection device further comprises an air outlet end provided with a nozzle assembly, and the elastic device is fixed on the nozzle assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640268.5A CN107521704B (en) | 2017-07-31 | 2017-07-31 | Injection device and air door assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640268.5A CN107521704B (en) | 2017-07-31 | 2017-07-31 | Injection device and air door assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107521704A CN107521704A (en) | 2017-12-29 |
| CN107521704B true CN107521704B (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710640268.5A Active CN107521704B (en) | 2017-07-31 | 2017-07-31 | Injection device and air door assembly thereof |
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| CN (1) | CN107521704B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110608205A (en) * | 2018-06-15 | 2019-12-24 | 北京航空航天大学 | Air-entraining ring for injection inflation system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4368009A (en) * | 1980-08-15 | 1983-01-11 | The B. F. Goodrich Company | Aspirator |
| US6004176A (en) * | 1998-04-21 | 1999-12-21 | Air Cruisers Company | Aspirator assembly |
| CN201088959Y (en) * | 2007-07-16 | 2008-07-23 | 苏臻荣 | Novel electric fanning machine |
| US8066493B2 (en) * | 2009-04-16 | 2011-11-29 | Goodrich Corporation | Inflation aspirator with collapsible barrel |
| CN102039993B (en) * | 2010-11-18 | 2012-10-31 | 凯迈（洛阳）气源有限公司 | Injection device for life-saving air bag |
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| CN107521704A (en) | 2017-12-29 |
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