CN218296917U

CN218296917U - Ventilation opening cover

Info

Publication number: CN218296917U
Application number: CN202221739425.0U
Authority: CN
Inventors: 赵立乔; 辛健; 武凯日; 徐华; 高珠珠
Original assignee: Landspace Technology Co Ltd
Current assignee: Landspace Technology Co Ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2023-01-13
Anticipated expiration: 2032-07-06

Abstract

The utility model provides a vent cover, include: the device comprises a connector, an air door, a reset mechanism and a locking mechanism; the interface is of a hollow structure and is provided with a hinge shaft; the first interface port is used for being fixedly connected with the fairing, and the second interface port is used for being connected with the air conditioner connector; the air door is rotatably connected with the interface through the hinge shaft so as to open or close the interface; the reset mechanism is used for enabling the air door to rotate around the hinge shaft so as to close the interface; the locking mechanism is used for locking the damper and the interface so as to keep the interface closed. The vent cover can realize remote control on opening or closing of the vent.

Description

Ventilation opening cover

Technical Field

The utility model relates to a pipeline interface field, concretely relates to ventilation port lid.

Background

The fairing air-conditioning pipeline interface of the carrier rocket is used for connecting a ground air-conditioning connector pipeline in a launching preparation stage and plugging the air-conditioning connector pipeline interface by using a cover after the fairing air-conditioning pipeline interface is separated from the ground air-conditioning connector. At present, a pipeline interface of an air conditioner connector of a fairing of a carrier rocket is arranged outside the fairing, and a flap structure is adopted by a flap cover. Wherein the flap needs to be opened manually. After the ground air conditioner connector is separated, the ground air conditioner connector can be closed under the action of the torsion spring. The flap is restrained from rebounding upon closing by a reed. After the port cover is closed, if the subsequent launching is delayed or terminated in the launching preparation process, the connection relation of the pipeline interface of the air conditioner connector is realized again, and the port cover needs to be manually opened on site manually. At this time, since the carrier rocket is already filled with propellant, the manual operation can cause operators to be in a flammable and explosive environment.

In order to realize the purpose of remotely opening the vent cover, it is important to design the vent cover.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provide a ventilation flap.

The utility model provides a ventilation flap, include: the device comprises a connector, an air door, a reset mechanism and a locking mechanism; the interface is of a hollow structure and is provided with a hinge shaft; the first interface port is used for being fixedly connected with the fairing, and the second interface port is used for being connected with the air conditioner connector; the air door is rotatably connected with the interface through the hinge shaft so as to open or close the interface; the reset mechanism is used for enabling the air door to rotate around the hinge shaft so as to close the interface; the locking mechanism is used for locking the damper and the interface so as to keep the interface closed.

According to an embodiment of the present invention, the locking mechanism includes a ratchet wheel fixedly sleeved on the hinge shaft, a bracket fixed to the end surface of the air door, a claw, and a plate spring; the middle part of the clamping jaw is rotatably connected with the bracket; a pawl is arranged at the first end of the clamping jaw; the first end of the plate spring is fixed on the bracket, and the other end of the plate spring is used for propping against the first side surface of the second end of the claw, so that the pawl is inserted into the clamping groove of the ratchet wheel and clamped by the clamping groove of the ratchet wheel; and a mandril of the air conditioner connector props against and pushes the second side surface of the second end of the claw, so that the pawl is separated from the clamping groove of the ratchet wheel, and the air door is driven to rotate around the hinge shaft to open the interface.

According to an embodiment of the invention, the return mechanism comprises a torsion spring; the torsion spring is fixedly sleeved on the hinge shaft, and a support arm of the torsion spring props against the end face of the air door so as to reset the air door; according to an embodiment of the invention, the hinge shaft is arranged eccentrically with respect to the interface.

According to an embodiment of the present invention, both ends of the hinge shaft are fixedly connected to the inner wall of the interface; the air door setting shaft sleeve is sleeved on the hinge shaft and is in rotatable connection with the hinge shaft; the shaft sleeve is symmetrically provided with two circumferential holes along the axial direction of the shaft sleeve so as to arrange the two torsion springs on the hinge shaft.

According to an embodiment of the present invention, the second side surface is an arc-shaped groove structure; and the ejector rod of the air conditioner connector props against and pushes the arc-shaped groove, so that the pawl is separated from the clamping groove of the ratchet wheel.

According to an embodiment of the present invention, the bracket is provided with a limiting surface near the first side surface; when the ejector rod of the air conditioner connector props against and pushes the second side face, the first side face props against the limiting face so as to push the air door to rotate.

According to an embodiment of the invention, the plate spring first end is fixed on the support by a plurality of first screws.

According to the utility model discloses an embodiment the both sides of hinge, the interface is in the hinge both sides are provided with two sealed semi-rings the interface is right after closing the air door with the interface seals.

According to the utility model discloses an embodiment, the interface is the ring flange, the ring flange is provided with a plurality of screw holes along its circumference terminal surface to the butt joint radome fairing.

According to the utility model discloses a vent cover through setting up canceling release mechanical system and locking mechanical system, utilizes air conditioner connector ejector pin to realize the remote control that the interface was opened or was closed. The utility model provides a vent flap does not need artifical to flammable and explosive scene manual opening interface, has solved the problem that needs operating personnel manual opening vent flap in hazardous operation environment.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification of the invention, illustrate exemplary embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a perspective view of a vent cover according to an embodiment of the present invention;

fig. 2 is a perspective view of a vent cover interface according to an embodiment of the present invention;

fig. 3 is a perspective view of a vent cover damper according to an embodiment of the present invention;

fig. 4 is a perspective view of a vent cover jaw of an embodiment of the present invention;

fig. 5 is a perspective view of a vent cover according to an embodiment of the present invention;

FIG. 6 is an enlarged view of A in FIG. 5;

fig. 7 is an enlarged view of B in fig. 1.

Description of the reference numerals:

1-connector, 2-air door, 3-ratchet wheel, 4-torsion spring, 5-second screw, 6-claw, 7-pin shaft, 8-plate spring and 9-first screw;

12-hinge shaft, 13-sealing semi-ring;

21-shaft sleeve, 22-bracket, 23-through hole;

61-pawl, 62-pin hole.

Detailed Description

The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention, for the purpose of illustrating the principles of the invention. Additionally, the components in the drawings are not necessarily to scale. For example, the dimensions of some of the structures or regions in the figures may be exaggerated relative to other structures or regions to help improve understanding of embodiments of the present invention.

The directional terms appearing in the following description are directions shown in the drawings and do not limit the specific structure of the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise stated, the terms "mounted", "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection. May be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

Furthermore, the terms "comprises," "comprising," "includes," "including," "has," "having" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure or component comprising a list of elements does not include only those elements but may include other mechanical components not expressly listed or inherent to such structure or component. Without further limitation, an element defined by the phrases "comprising 8230; \8230;" 8230; "does not exclude the presence of additional like elements in an article or device comprising the element.

Spatial relationship terms such as "below," "at \8230," "lower," "above," "at \8230," "upper," "higher," and the like are used for convenience in description to explain the positioning of one element relative to a second element, indicating that the terms are intended to encompass different orientations of the device in addition to orientations different from those shown in the figures. Further, for example, the phrase "one element is over/under another element" may mean that the two elements are in direct contact, or that there is another element between the two elements. Furthermore, terms such as "first", "second", and the like are also used to describe various elements, regions, sections, etc. and are not intended to be particularly descriptive in an ordinal or sequential sense and should not be interpreted as limiting. Like terms refer to like elements throughout the description.

In describing the present invention hereinafter, it is possible to use only "rocket," "launch vehicle," "spacecraft," "space vehicle," or "missile" in a certain context, which is merely for convenience of description and is not meant to be limited to the specific words used. In general, the launch vehicle of the present invention includes both space vehicles for carrying satellites or spacecraft or other detectors, and weapons such as missiles, rocket projectiles of all types for carrying military loads, and the like that are capable of delivering payloads into the air. Those skilled in the art, in interpreting the above specific terms, should not be construed as limiting the launch vehicle to only one of a rocket or a missile, depending on the specific terms used in describing the scenario, thereby reducing the scope of the present invention.

It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples thereof.

Fig. 1 is a perspective view of a vent cover according to an embodiment of the present invention; fig. 2 is a perspective view of a vent cover interface according to an embodiment of the present invention; fig. 3 is a perspective view of a vent cover damper according to an embodiment of the present invention; fig. 4 is a perspective view of a vent cover jaw of an embodiment of the present invention; fig. 5 is a perspective view of a vent cover according to an embodiment of the present invention; FIG. 6 is an enlarged view of A in FIG. 5; fig. 7 is an enlarged view of B in fig. 1.

As shown in fig. 1 and 2, the utility model provides a ventilation flap, include: interface 1, air door 2, canceling release mechanical system and locking mechanical system. The interface 1 is a hollow structure and is provided with a hinge shaft 12. The first port of the interface 1 is used for being fixedly connected with the fairing, and the second port of the interface 1 is used for being connected with an air conditioner connector. The damper 2 is rotatably connected to the mouthpiece 1 by a hinge shaft 12 to open or close the mouthpiece 1. The return mechanism is used to rotate the damper 2 about the hinge shaft 12 to close the mouthpiece 1. The locking mechanism is used to lock the damper 2 with the interface 1 so that the interface 1 remains closed.

In this embodiment, the damper is operable to cause the interface to be closed by the locking mechanism. The ejector rod on the air conditioner connector props against the air door, the locking mechanism unlocks the air door, the air door rotates around the hinge shaft until the ejector rod stops extending out, and the interface reaches an opening state. The ejector rod of the air conditioner connector is recovered and reset, and the air door rotates around the hinge shaft to reset under the action of the reset mechanism so as to close the interface. The locking mechanism locks the air door, and the interface keeps a closed state.

The vent cover provided by the embodiment realizes the remote control of opening or closing the opening by setting the resetting mechanism and the locking mechanism and utilizing the ejector rod of the air conditioner connector. The utility model provides a vent flap does not need artifical to flammable and explosive scene manual opening interface, has solved the problem that needs operating personnel manual opening vent flap in hazardous operation environment.

In this embodiment, the interface may be a thin-walled cylindrical structure. Accordingly, the damper is a disc structure to cooperatively form a seal with the interface. The drawings are only for clarity of illustration, and are not intended to limit the scope of the present invention. The utility model discloses do not do specific restriction to the shape of interface, air door.

According to an embodiment of the present invention, the locking mechanism comprises a locking portion and a moving portion. The locking part is used for embracing the hinge shaft so as to lock and fix the air door and the hinge shaft relatively. The moving part is arranged on the end face of the air door and used for driving the locking part to move so as to be separated from the hinge shaft to unlock the air door.

According to the utility model discloses an embodiment, the venthole lid still includes stop gear except that interface 1, air door 2, canceling release mechanical system and locking mechanical system for the reset position of restriction air door 2.

In this embodiment, the ejector pin of air conditioner connector is retrieved and is reset, and the air door is under the effect of canceling release mechanical system, and is rotatory around the hinge until with stop gear butt joint and by stop gear spacing when the interface is closed. Meanwhile, the locking mechanism locks the air door, and the interface keeps a closed state.

As shown in fig. 1, 2, 3, 4, 5 and 6, according to an embodiment of the present invention, the locking mechanism includes a ratchet 3 fixedly sleeved on the hinge shaft 12, a bracket 22 fixed to the end surface of the damper 2, a claw 6 and a plate spring 8. The middle part of the claw 6 is rotatably connected with the bracket 22. The pawl 6 is provided with a detent 61 at a first end. A first end of the plate spring 8 is fixed on the bracket 22, and the other end of the plate spring 8 is used for abutting against a first side surface of a second end of the claw 6, so that the pawl 61 is inserted into the clamping groove of the ratchet wheel 3 and clamped by the clamping groove of the ratchet wheel 3. The top rod of the air conditioner connector supports against and pushes the second side surface of the second end of the claw 6, so that the pawl 61 is separated from the clamping groove of the ratchet wheel 3, and the air door 2 is driven to rotate around the hinge shaft 12 to open the interface 1.

In this embodiment, the direction of the tooth tips of the ratchet is opposite to the direction in which the damper opens. For example, in the example shown in fig. 1, the damper opening direction is clockwise, the closing direction is counterclockwise, and the tooth tip direction of the ratchet teeth is counterclockwise. When the ejector rod of the air conditioner connector props against and pushes the second side face of the second end of the claw, the pawl is separated from the clamping groove of the ratchet wheel, and the air door is driven to rotate, so that the interface is opened. The air door rotates to close the interface under the action of the reset mechanism. One end of the plate spring is fixedly installed on the support of the air door, the other end of the plate spring props against the first side face of the second end of the clamping jaw through elastic deformation, the pawl of the clamping jaw rebounds under the action of elastic force of the plate spring and is inserted into the clamping groove of the ratchet wheel to strain the gear teeth of the ratchet wheel and lock the air door, and therefore the interface is kept in a closed state.

As shown in fig. 1 and 6, further, the support includes two opposite upper and lower sub-supports, and the two sub-supports are provided with through holes 23. The middle of the jaw is provided with a pin hole 62. The pin 7 passes through the through holes 23 of the two brackets and the pin holes 62 in the middle of the jaws. The jaw 6 is rotatably connected to the bracket 22 about a pin 7.

As shown in fig. 1 and 7, according to one embodiment of the present invention, the return mechanism includes a torsion spring 4. The torsion spring 4 is fixedly sleeved on the hinge shaft 12, and a support arm of the torsion spring 4 is abutted against the end face of the air door 2, so that the air door 2 is reset.

In this embodiment, the torsion spring is fixedly sleeved on the hinge shaft through the second screw 5, and the torsion spring is limited to rotate around the hinge shaft. The support arm is propped against the end face of the air door. The support arm is laminated with the air door rotation surface, and the reset torque can be applied to the air door more uniformly.

As shown in fig. 2 and 3, according to an embodiment of the present invention, the hinge shaft 12 is eccentrically disposed with respect to the mouthpiece 1.

As shown in fig. 2 and 3, according to an embodiment of the present invention, both ends of the hinge shaft 12 are fixedly connected to the inner wall of the mouthpiece 1. The air door 2 is provided with a shaft sleeve 21 which is sleeved on the hinge shaft 12 and is rotatably connected with the hinge shaft 12. The sleeve 21 is provided with two circumferential apertures symmetrically along its axial direction to provide two torsion springs 4 on the hinge shaft 12.

In this embodiment, the sleeve and the hinge shaft may both be eccentrically disposed (i.e., offset from the plane of symmetry of the joint). The middle part of the shaft sleeve is provided with three holes for accommodating the ratchet wheel and the two torsion springs. For example, the ratchet wheel is arranged in the middle of the hinge shaft, namely an aperture in the middle of three apertures of the shaft sleeve. The two torsional springs are respectively arranged in the holes at the two sides of the ratchet wheel. The support is arranged on one side of the shaft sleeve.

As shown in fig. 4 and 6, according to an embodiment of the present invention, the second side surface has an arc-shaped groove structure. The ejector rod of the air conditioner connector props against and pushes the arc-shaped groove, so that the pawl 61 is separated from the clamping groove of the ratchet wheel 3.

In this embodiment, the second side surface of the second end of the clamping jaw is provided with an arc-shaped groove structure, which is helpful for the ejector rod on the air conditioner connector to push the clamping jaw and prevent the clamping jaw from sliding relative to the clamping jaw.

As shown in fig. 6, according to an embodiment of the present invention, the bracket 22 is provided with a limiting surface 10 near the first side surface. When the ejector rod of the air conditioner connector is propped against and pushes the second side face, the first side face is propped against the limiting face 10 to push the air door 2 to rotate.

As shown in fig. 5 and 6, according to one embodiment of the present invention, the first end of the plate spring 8 is fixed to the bracket 22 by a plurality of first screws 9.

As shown in fig. 2, according to an embodiment of the present invention, the interface 1 is provided with two sealing half rings 13 on both sides of the hinge shaft 12, and the air door 2 and the interface 1 are sealed after the interface 1 is closed.

In this embodiment, two half seal rings are arranged inside the joint (for example, inside the cylinder) along the circumferential direction of the joint on both sides of the hinge shaft, so that the reset position of the air door is limited, and the air door and the joint are sealed after being reset.

The opening process of the vent cover that this embodiment provided does, during the vent cover closed condition (during interface closed condition), the air door compresses tightly the sealing semi-ring under the effect of torsional spring. When the connector needs to be opened, the ejector rod on the air conditioner connector is used for propping against the arc-shaped groove structure on the second side face of the clamping jaw, and the clamping jaw rotates around the pin shaft under the action of the ejector rod to compress the plate spring. At the same time, the pawl of the claw is disengaged from the clamping groove of the ratchet wheel. The jaw continues to rotate until it contacts the stop surface 10 of the bracket. The jack catch continues to move under the action of the ejector rod, and drives the air door to rotate around the hinge shaft until the ejector rod stops extending out. At this time, the air door rotates a certain angle (for example, clockwise 90 °) around the hinge shaft, and the air vent cover (i.e., the mouthpiece) reaches an open state.

The closing process of the air vent cover that this embodiment provided does, and air conditioner connector ejector pin is retrieved and is reset, and jack catch and air door lose the support, and the air door circles round (if anticlockwise rotation) around the hinge under the effect of torsional spring until by sealed semi-ring spacing. Then, the claw is reset around the pin shaft under the elastic force action of the plate spring, the pawl of the claw is clamped into the clamping groove of the ratchet wheel again, and the vent cover (namely the interface) reaches and keeps a closed state.

As shown in fig. 2, according to an embodiment of the present invention, the interface 1 is a flange plate, and the flange plate is provided with a plurality of threaded holes along its circumferential end surface to butt joint the cowling.

In this embodiment, the interface may be configured as a flange (e.g., a planar flange) at one end for connection to the launch vehicle fairing through the damper. The other end can be a conical structure and is used for being connected with an air conditioner connector. The hinge shaft is arranged at the flange structure of the interface, so that the air door can open or close the interface.

On the other hand, the utility model provides a rocket radome fairing, including above-mentioned vent flap. The rocket fairing comprises the technical characteristics of the vent cover in the embodiment, so the beneficial effects and the technical characteristics of the rocket fairing are the same as those of the vent cover, and are not repeated herein.

In another aspect, the present embodiment provides a rocket including the rocket fairing or the vent cover. The rocket comprises the technical characteristics of the vent cover in the embodiment, so the beneficial effects and the technical characteristics of the rocket are the same as those of the vent cover, and are not repeated herein.

The above embodiments of the present invention can be combined with each other, and have corresponding technical effects.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vent cover, comprising: the device comprises an interface, an air door, a reset mechanism and a locking mechanism; the interface is of a hollow structure and is provided with a hinge shaft; the first interface port is used for being fixedly connected with the fairing, and the second interface port is used for being connected with the air conditioner connector; the air door is rotatably connected with the interface through the hinge shaft so as to open or close the interface; the reset mechanism is used for enabling the air door to rotate around the hinge shaft so as to close the interface; the locking mechanism is used for locking the damper and the interface so as to keep the interface closed.

2. The vent cover of claim 1, wherein the locking mechanism comprises a ratchet wheel fixedly sleeved on the hinge shaft, a bracket fixed on the end face of the vent, a claw and a leaf spring; the middle part of the clamping jaw is rotatably connected with the bracket; a pawl is arranged at the first end of the clamping jaw; the first end of the plate spring is fixed on the bracket, and the other end of the plate spring is used for propping against the first side surface of the second end of the claw so that the pawl is inserted into the clamping groove of the ratchet wheel and clamped by the clamping groove of the ratchet wheel; and a top rod of the air conditioner connector props against and pushes the second side surface of the second end of the claw, so that the pawl is separated from the clamping groove of the ratchet wheel, and the air door is driven to rotate around the hinge shaft to open the interface.

3. The vent cover of claim 2, wherein the return mechanism comprises a torsion spring; the torsion spring is fixedly sleeved on the hinge shaft, and the support arm of the torsion spring props against the end face of the air door so as to reset the air door.

4. The vent cover of claim 1, wherein the hinge axis is eccentrically disposed relative to the interface.

5. The vent cover of claim 3, wherein both ends of the hinge shaft are fixedly connected to the inner wall of the port; the air door is provided with a shaft sleeve which is sleeved on the hinge shaft and is in rotatable connection with the hinge shaft; the shaft sleeve is symmetrically provided with two circumferential holes along the axial direction of the shaft sleeve so as to arrange the two torsion springs on the hinge shaft.

6. The vent cover of claim 2, wherein the second side is an arcuate slot configuration; and the ejector rod of the air conditioner connector props against and pushes the arc-shaped groove, so that the pawl is separated from the clamping groove of the ratchet wheel.

7. The vent cover of claim 2, wherein the bracket is provided with a stop surface adjacent the first side surface; when the ejector rod of the air conditioner connector props against and pushes the second side face, the first side face props against the limiting face so as to push the air door to rotate.

8. The vent cover of claim 2, wherein the first end of the leaf spring is secured to the bracket by a first plurality of screws.

9. The vent cover of claim 1, wherein the port is provided with two sealing half rings on either side of a hinge shaft to seal the damper and the port after the port is closed.

10. The vent cover of claim 1, wherein the interface is a flange having a plurality of threaded holes along a circumferential end surface thereof for abutting the cowling.