CN205574285U - Ventilation nozzle is used in helicopter cabin - Google Patents
Ventilation nozzle is used in helicopter cabin Download PDFInfo
- Publication number
- CN205574285U CN205574285U CN201620247256.7U CN201620247256U CN205574285U CN 205574285 U CN205574285 U CN 205574285U CN 201620247256 U CN201620247256 U CN 201620247256U CN 205574285 U CN205574285 U CN 205574285U
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- China
- Prior art keywords
- sliding sleeve
- major axis
- cowling
- buckle
- bulge loop
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Abstract
The utility model discloses a ventilation nozzle is used in helicopter cabin. It includes the sliding sleeve, and the cover has a spherical section of thick bamboo on the sliding sleeve excircle, has upper and lower horizontal bulge loop respectively on the upper and lower end inner wall of a spherical section of thick bamboo, and there is the circumference groove on the medial surface upper portion of going up horizontal bulge loop, and the circumference inslot has the snap ring. Horizontal bulge loop card is under the step down. There is the buckle in the department in the middle of the snap ring. There is vent flap in the sliding sleeve. Have the major axis above the vent flap, the major axis lower extreme is the slope form to be fixed at vent flap's center, and the major axis upper end is passed the buckle from the buckle below and is stretched out outside. There is the fixing base in the spherical section of thick bamboo outside, has circumferential groove on the fixing base medial surface, has the spring strip in the circumferential groove. Its characteristics are the spring strip has along its circumference equipartition radially buckles a little for be the point contact between the surface of a spring strip and a spherical section of thick bamboo. This kind of ventilation nozzle uses laborsaving, maintenance rate. Be applicable to on the helicopter.
Description
Technical field
This utility model relates to a kind of ventilation mouths.Specifically, it is the ventilation mouths blown in the cabin of aircraft, is particularly suited on helicopter it can also be used in the cabin of automobile bodies or steamer.
Background technology
Both know about in aircraft, steamer or railway car manufacture field, for ensureing that occupant can breathe fresh air, in the cabin of the cabin of aircraft, automobile bodies or steamer, be equipped with ventilation mouths.At present, the ventilation mouths used in the cabin of the cabin of aircraft, automobile bodies or steamer is all traditional product, and this traditional ventilation mouths includes sliding sleeve, and this sliding sleeve is cylindrical shape, one section, its underpart is less than top, in order to forming circumferential step on one section, the bottom cylindrical of lower end.Being cased with spherical cylinder on the cylindrical of sliding sleeve, the top and bottom inwall of spherical cylinder has upper horizontal bulge loop and lower horizontal bulge loop respectively, there is circumferential slot on the medial surface top of upper horizontal bulge loop, has snap ring in circumferential slot.The most horizontal bulge loop is stuck under described step.Described snap ring is to form with steel bar bending, and its go-and-retum has gap, and there is the interior convex bending section as buckle the centre of its go-and-retum.Have in sliding sleeve in that section of sliding sleeve inner circle that cowling, cowling surrounding be connected between circumferential step and its upper end.Major axis, major axis lower end is had to be fixed on the center of cowling and make have angle, major axis upper end penetrate buckle below buckle and make major axis upper end extend between the axial of major axis and the upper surface of cowling above cowling.Having fixing seat on the cylindrical of spherical cylinder, this fixing seat is ring-type, its medial surface be sphere and and the outer surface of spherical cylinder between in being slidably matched.There is circumferential recess on the medial surface of fixing seat, in circumferential recess, have spring.Spring therein is circular arc, under installment state, contacts between the concave surface of this spring with the outer surface of spherical cylinder.Owing to the concave surface of this spring contacts with between the outer surface of spherical cylinder, contact surface is big, and frictional force is big, fragile, and maintenance rate is high.Contacting with between the outer surface of spherical cylinder due to the concave surface of this spring again, torsional moment is difficult to control to, and uses relatively elaborate.
Utility model content
Problem to be solved in the utility model is to provide a kind of helicopter cabin ventilation mouths.This ventilation mouths, uses laborsaving, maintenance rate.
The problems referred to above to be solved in the utility model are realized by techniques below scheme:
Helicopter cabin of the present utility model ventilation mouths includes that sliding sleeve, described sliding sleeve are cylindrical shape, and one section, its underpart diameter is little to its upper, in order to forming circumferential step on one section, the bottom cylindrical of lower end.Being cased with spherical cylinder on the cylindrical of sliding sleeve, the top and bottom inwall of spherical cylinder has upper horizontal bulge loop and lower horizontal bulge loop respectively, there is circumferential slot on the medial surface top of upper horizontal bulge loop, has snap ring in circumferential slot.The most horizontal bulge loop is stuck under described step.Described snap ring is to form with steel bar bending, and its go-and-retum has gap, and there is the interior convex bending section as buckle its middle.Cowling is had in sliding sleeve, described cowling is positioned at that section of sliding sleeve between circumferential step and its upper end, all being connected with bearing pin between the relative both sides of cowling and the jacket wall of corresponding sliding sleeve, two bearing pins are positioned on same diameter line so that cowling can rotate an angle around two bearing pins.Major axis, major axis lower end is had to be fixed on the center of cowling and make have angle, major axis upper end penetrate buckle below buckle and make major axis upper end extend between the axial of major axis and the upper surface of cowling above cowling.There is fixing seat in the outside of spherical cylinder, and this fixing seat is ring-type, its medial surface be sphere and and the outer surface of spherical cylinder between in being slidably matched.There is circumferential recess on the medial surface of fixing seat, in circumferential recess, have spring.It is characterized in that described spring is evenly equipped with bent radial point along its circumference so that in point cantact between the outer surface of spring and spherical cylinder.
Further improvement of the utility model scheme is, major axis and described one end being clasped are cased with sheath.
As can be seen from the above scheme, it is evenly equipped with bent radial point due to described spring along its circumference so that in point cantact between the outer surface of spring and spherical cylinder, greatly reduce the contact area between the outer surface of spring and spherical cylinder.Owing to the contact area between the outer surface of spring and spherical cylinder is little, thus reducing frictional force between the two so that spring is hardly damaged, maintenance rate reduces.It is point cantact owing to this utility model becomes the contact of traditional face again so that torsional moment is easily controlled, and uses ratio relatively labor-saving.
Accompanying drawing explanation
Fig. 1 is helicopter cabin of the present utility model ventilation mouths structural representation；
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is the A-A cross-sectional schematic after removing sliding sleeve, snap ring, major axis and cowling in Fig. 1.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 shows, helicopter cabin of the present utility model ventilation mouths includes sliding sleeve 1, and described sliding sleeve 1 is cylindrical shape, and one section, its underpart diameter is little to its upper, thus is forming a circumferential step 12 on one section, the bottom cylindrical of lower end.Being cased with spherical cylinder 2 on the cylindrical of sliding sleeve 1, the top and bottom inwall of spherical cylinder 2 is machined with horizontal bulge loop 4 and lower horizontal bulge loop 13 respectively, the medial surface top of upper horizontal bulge loop 4 is machined with circumferential slot, is provided with snap ring 6 in circumferential slot.The most horizontal bulge loop 13 is stuck under described circumferential step 12.Described snap ring 6 is to form with steel bar bending, and its go-and-retum leaves gap, and its middle is machined with the interior convex bending section as buckle 8.Cowling 5 it is provided with in sliding sleeve 1,
Described cowling 5 is positioned at that section of sliding sleeve 1 between circumferential step 12 and its upper end, is all connected with bearing pin 3 between the relative both sides of cowling 5 and the jacket wall of corresponding sliding sleeve 1, and two bearing pins 3 are positioned on same diameter line so that cowling 5 can rotate an angle around two bearing pins 3.Cowling 5 is provided above with major axis 7, major axis 7 lower end is fixed on the center of cowling 5 and makes to form required angle between the axial of major axis 7 and the upper surface of cowling 5, one section, major axis 7 upper end is cased with sheath 9 and penetrates buckle 8 below buckle 8 and make major axis 7 upper end extend.Hands is pinched the lower extending end of sliding sleeve 1 and rotates an angle, and cowling 5 can be driven to rotate an angle around two bearing pins 3, realizes the open degree of cowling 5 with this, thus the size realizing air output adjusts.
The outside of spherical cylinder 2 is provided with fixing seat 10, and this fixing seat is ring-type, its medial surface be sphere and and the outer surface of spherical cylinder 2 between in being slidably matched.It is machined with circumferential recess on the medial surface of fixing seat 10, spring 11 is installed in circumferential recess, described spring 11 is uniform along its circumference, and it is machined with bent radial point 14 in the circumference of spring 11, make between the outer surface of spring 11 and spherical cylinder 2 in point cantact, greatly reduce the contact area between the outer surface of spring 11 and spherical cylinder 2, reduce frictional force between the two.
For one end abrasion avoiding major axis 7 to coordinate with described buckle 8, the one end coordinated with described buckle 8 at major axis 7 is cased with sheath 9.
For reducing the friction of spring 11 and spherical cylinder 2, extend the service life of spring 11, between the outer surface of described spring 11 and spherical cylinder 2, be provided with sealing strip 111.
Claims (3)
1. helicopter cabin ventilation mouths, including sliding sleeve (1), described sliding sleeve (1) is cylindrical shape, and one section, its underpart diameter is little to its upper, in order to forming circumferential step (12) on one section, the bottom cylindrical of lower end；It is cased with spherical cylinder (2) on the cylindrical of sliding sleeve (1), the top and bottom inwall of spherical cylinder (2) has respectively upper horizontal bulge loop (4) and lower horizontal bulge loop (13), the medial surface top of upper horizontal bulge loop (4) have circumferential slot, in circumferential slot, have snap ring (6)；The most horizontal bulge loop (13) is stuck under circumferential step (12)；Described snap ring (6) is to form with steel bar bending, and its go-and-retum has gap, and there is the interior convex bending section as buckle (8) its middle；Cowling (5) is had in sliding sleeve (1), described cowling (5) is positioned at that section of sliding sleeve (1) between circumferential step (12) and its upper end, bearing pin (3) all it is connected with between the relative both sides of cowling (5) and the jacket wall of corresponding sliding sleeve (1), two bearing pins (3) are positioned on same diameter line so that cowling (5) can rotate an angle around two bearing pins；Major axis (7) is had above cowling (5), major axis (7) lower end is fixed on the center of cowling (5) and makes there is angle between the axial of major axis (7) and the upper surface of cowling (5), and major axis (7) upper end penetrates buckle (8) from buckle (8) lower section and makes major axis (7) upper end extend；There is fixing seat (10) in the outside of spherical cylinder (2), and this fixing seat is ring-type, its medial surface be sphere and and the outer surface of spherical cylinder (2) between in being slidably matched；There is circumferential recess on the medial surface of fixing seat (10), in circumferential recess, have spring (11)；It is characterized in that described spring (11) is evenly equipped with bent radial point (14) along its circumference so that in point cantact between the outer surface of spring (11) and spherical cylinder (2).
Helicopter cabin the most according to claim 1 ventilation mouths, it is characterised in that one end that major axis (7) coordinates with described buckle (8) is cased with sheath (9).
Helicopter cabin the most according to claim 1 ventilation mouths, it is characterised in that have sealing strip (111) between the outer surface of described spring (11) and spherical cylinder (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620247256.7U CN205574285U (en) | 2016-03-29 | 2016-03-29 | Ventilation nozzle is used in helicopter cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620247256.7U CN205574285U (en) | 2016-03-29 | 2016-03-29 | Ventilation nozzle is used in helicopter cabin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205574285U true CN205574285U (en) | 2016-09-14 |
Family
ID=56867429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620247256.7U Active CN205574285U (en) | 2016-03-29 | 2016-03-29 | Ventilation nozzle is used in helicopter cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205574285U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836137A (en) * | 2016-03-29 | 2016-08-10 | 江苏恒铭达航空设备有限公司 | Ventilation nozzle for cabin of helicopter |
-
2016
- 2016-03-29 CN CN201620247256.7U patent/CN205574285U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836137A (en) * | 2016-03-29 | 2016-08-10 | 江苏恒铭达航空设备有限公司 | Ventilation nozzle for cabin of helicopter |
| CN105836137B (en) * | 2016-03-29 | 2017-11-07 | 江苏恒铭达航空设备有限公司 | Helicopter cabin ventilation mouths |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |