CN219127824U - Elbow plug mechanism, breathing mask and ventilation treatment equipment - Google Patents

Abstract

The embodiment of the utility model discloses an elbow plugging mechanism, a breathing mask and ventilation treatment equipment, which relate to the technical field of medical equipment, wherein the inner side wall of a connecting piece is provided with at least one first limiting piece, and one end of an elbow joint, which is used for being plugged with a breathing mask main body, is provided with at least one second limiting piece; and along the plugging direction of the elbow joint, the switching from the first relative position to the second relative position is realized in a pressing mode. When the first limiting piece is positioned at the first relative position, the first limiting piece is clamped with the second limiting piece so as to limit the degree of freedom of relative rotation of the connecting piece and the elbow joint; when in the second relative position, the first limiting piece is at least partially separated from the second limiting piece, and the connecting piece and the elbow joint are allowed to relatively rotate to the pluggable position of the elbow joint. The elbow joint can be plugged and unplugged by pressing and rotating, the operation is simple and convenient, and in the plugging and unplugging process, the abrupt change of plugging and unplugging force does not exist, so that the wearing comfort is improved.

Description

Elbow plug mechanism, breathing mask and ventilation treatment equipment

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an elbow plugging mechanism, a breathing mask and ventilation treatment equipment.

Background

Currently, non-invasive positive pressure ventilation is widely used in clinical treatment and hospital rescue, and a tube is not required to be inserted into the airway of a patient through surgery, but a continuous pressure ventilation or a variable pressure ventilation is delivered to the airway of the patient by using a pressure ventilation device and a breathing mask worn on the face of the patient, so that the patient is treated.

In the prior art, a pluggable bent pipe is usually arranged on the front surface of the breathing mask, a buckling position for being clamped with the breathing mask is arranged on the bent pipe, and the buckling position is pulled out and plugged in by utilizing the deformation of the bent pipe.

When the bent pipe is inserted or pulled out, the deformation degree of the bent pipe in the assembly area is gradually increased along with the increase of the applied force value; when the deformation degree just enables the buckling position to be pulled out or inserted into the breathing mask, the applied force value reaches the maximum insertion force and is rapidly reduced to 0 at the next moment. That is, at the moment of inserting or extracting the elbow, the force value is abrupt and discontinuous, so that the comfort of inserting or extracting the elbow is poor, and particularly, when the mask is worn on the face, the elbow is extracted, which causes serious discomfort to the wearer.

Disclosure of Invention

The utility model provides an elbow plugging mechanism, a breathing mask and ventilation treatment equipment, and aims to solve the problems that in the prior art, the comfort of plugging an elbow is poor, and discomfort is easily caused to a wearer.

In a first aspect, the present utility model discloses an elbow plug mechanism, comprising: a respiratory mask body, a connector and an elbow joint;

the breathing mask comprises a breathing mask main body and is characterized in that the breathing mask main body is provided with a pipeline interface, the connecting piece is embedded in the pipeline interface and is of a cylindrical structure, and at least part of the outer side wall of the connecting piece is in clearance fit with the inner peripheral surface of the pipeline interface;

the elbow joint penetrates through the connecting piece, and the outer side wall of the elbow joint is in clearance fit with the inner side wall of the connecting piece;

the inner side wall of the connecting piece is provided with at least one first limiting piece, and one end of the elbow joint, which is used for being spliced with the main body of the breathing mask, is provided with at least one second limiting piece;

when the elbow joint and the connecting piece are positioned at a first relative position, the first limiting piece is clamped with the second limiting piece so as to limit the freedom degree of relative rotation of the connecting piece and the elbow joint;

and pressing the elbow joint along the plugging direction of the elbow joint so as to switch the elbow joint and the connecting piece to a second relative position relatively close to each other, wherein when the elbow joint is positioned at the second relative position, the first limiting piece and the second limiting piece are at least partially separated, and the connecting piece and the elbow joint are allowed to relatively rotate to the pluggable position of the elbow joint.

Optionally, the elbow plugging mechanism further includes: a flexible seal;

the flexible seal is located between the connector and the elbow, the flexible seal being adapted to provide elastic deformation when the first and second relative positions are switched.

Optionally, the outer side wall of the elbow joint is sequentially provided with a first concave part, a first convex part and a second concave part from the direction close to the second limiting part to the direction far away from the second limiting part;

when the flexible sealing element is positioned at the first relative position, the first limiting element is at least partially embedded in the first concave part, the first protruding part is abutted with the inner side wall of the connecting element, and the flexible sealing element is at least partially embedded in the second concave part.

Optionally, the flexible sealing element is sleeved on the outer side wall of the elbow joint;

the periphery side of elbow joint is provided with bellied flange, one side of flexible sealing member with the flange butt, the opposite side of flexible sealing member with first bulge and/or connecting piece and/or respirator main part butt.

Optionally, the connecting piece has a first end and a second end opposite to each other along the plugging direction of the elbow joint, the outer side wall protrusion at the first end forms a first buckling position, and the outer side wall protrusion at the second end forms a second buckling position;

the first buckling position and the second buckling position are respectively clamped with the main body of the breathing mask so as to limit the freedom degree of the connecting piece relative to the breathing mask main body along the inserting and extracting direction of the elbow joint.

Optionally, the first limiting piece comprises a second protruding portion, a third recessed portion and a third protruding portion which are arranged along the circumferential direction of the inner side wall of the connecting piece, and the third recessed portion is located between the second protruding portion and the third protruding portion;

the height of the second protruding part is larger than that of the third protruding part along the inserting and pulling direction of the elbow joint;

when the first limiting piece is positioned at the first relative position, the second limiting piece is embedded in the third concave part, and two ends of the second limiting piece are respectively abutted with the second protruding part and the third protruding part;

when the second limiting piece is positioned at the second relative position, the second limiting piece is separated from the third concave part, and the second limiting piece is allowed to slide out from one side of the third protruding part.

Optionally, at least one side of the third protruding portion is provided with a chamfer structure.

Optionally, the elbow plugging mechanism includes a plurality of first limiting members and a plurality of second limiting members corresponding to the first limiting members one by one;

the first limiting parts are arranged at intervals along the circumference of the inner side wall of the connecting piece, and the second limiting parts are arranged at intervals along the circumference of the elbow joint.

In a second aspect, the utility model discloses a respiratory mask, which comprises the elbow plugging mechanism.

In a third aspect, the present utility model discloses a ventilation therapy device comprising a respiratory mask as described above.

In the embodiment of the utility model, the elbow joint is pluggable with the main body of the breathing mask through the connecting piece, the inner side wall of the connecting piece is provided with at least one first limiting piece, and one end of the elbow joint, which is used for being spliced with the main body of the breathing mask, is provided with at least one second limiting piece; along the plug direction of elbow joint, elbow joint and connecting piece have first relative position and second relative position, can realize the switching of first relative position to second relative position through the mode of pressing. When the first limiting piece is positioned at the first relative position, the first limiting piece is clamped with the second limiting piece so as to limit the degree of freedom of relative rotation of the connecting piece and the elbow joint; when in the second relative position, the first limiting piece is at least partially separated from the second limiting piece, and the connecting piece and the elbow joint are allowed to relatively rotate to the pluggable position of the elbow joint. The elbow joint can be plugged and unplugged by pressing and rotating, the operation is simple and convenient, and in the plugging and unplugging process, the abrupt change of plugging and unplugging force does not exist, so that discomfort of a wearer can be avoided, and wearing comfort is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic diagram of an exploded construction of a respiratory mask according to an embodiment of the present utility model;

FIG. 2 shows a schematic diagram of a respiratory mask according to an embodiment of the present utility model;

FIG. 3 shows a cross-sectional view along A-A in FIG. 2 of an embodiment of the present utility model;

FIG. 4 shows an enlarged view of the embodiment of the utility model at I in FIG. 3;

FIG. 5 shows a schematic diagram of a direction definition of an embodiment of the utility model;

FIG. 6 shows one of the schematic views of the elbow joint structure according to the embodiment of the utility model;

FIG. 7 shows a second schematic view of an elbow joint according to an embodiment of the present utility model;

FIG. 8 shows a cross-sectional view along B-B in FIG. 7 of an embodiment of the present utility model;

FIG. 9 shows one of the structural schematic diagrams of the connector according to the embodiment of the present utility model;

FIG. 10 shows a second schematic view of a connector according to an embodiment of the present utility model;

FIG. 11 shows a cross-sectional view along the direction C-C in FIG. 10 of an embodiment of the present utility model;

FIG. 12 illustrates one of the connector and elbow position schematic views according to an embodiment of the present utility model;

FIG. 13 illustrates a second schematic view of the location of a connector and elbow according to an embodiment of the present utility model;

FIG. 14 illustrates a third schematic view of the location of a connector and elbow according to an embodiment of the present utility model;

FIG. 15 illustrates a fourth schematic view of the location of a connector and elbow according to an embodiment of the present utility model;

FIG. 16 illustrates a schematic view of a first adapter and elbow fitting assembly according to an embodiment of the present utility model;

fig. 17 shows an assembly schematic of a first adapter and a second adapter according to an embodiment of the utility model.

Description of the reference numerals

10-a respiratory mask body; 20-connecting piece; 201-first limiting piece, 2011-second protruding part; 2012-a third recess; 2013-a third protrusion; 202-a first buckling position; 203-a second buckling position; 30-elbow joints; 301-a second limiting piece; 302-a first recess; 303-a first protrusion; 304-a second recess; 305-flange; 40-flexible seal; 50-a first adapter; 60-second adapter.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 5, an embodiment of the present utility model discloses an elbow plugging mechanism, including: a respiratory mask body 10, a connector 20, and an elbow fitting 30; the breathing mask main body 10 is provided with a pipeline interface, the connecting piece 20 is embedded in the pipeline interface, the connecting piece 20 is of a cylindrical structure, and at least part of the outer side wall of the connecting piece 20 is in clearance fit with the inner peripheral surface of the pipeline interface; the elbow joint 30 is penetrated through the connecting piece 20, and the outer side wall of the elbow joint 30 is in clearance fit with the inner side wall of the connecting piece 20; the inner side wall of the connecting piece 20 is provided with at least one first limiting piece 201, and one end of the elbow joint 30 for being spliced with the breathing mask main body 10 is provided with at least one second limiting piece 301; when the elbow joint 30 and the connecting piece 20 are positioned at the first relative position, the first limiting piece 201 and the second limiting piece 301 are clamped to limit the freedom degree of relative rotation of the connecting piece 20 and the elbow joint 30; the elbow 30 is pressed in the plugging direction of the elbow 30, so that the elbow 30 and the connector 20 are switched to a second relative position relatively close to each other, and when in the second relative position, the first limiting member 201 and the second limiting member 301 are at least partially separated, and the connector 20 and the elbow 30 are allowed to relatively rotate to the pluggable position of the elbow 30.

Specifically, the respiratory mask body 10 has a ventilation cavity that can accommodate the mouth and/or nose of a patient, and a line interface is provided on the front face of the respiratory mask body 10 that communicates with the ventilation cavity and the elbow. As shown in fig. 5, an outer plane of the breathing mask main body 10 where the breathing mask main body is matched with the elbow joint 30 is defined as a reference plane α, a direction perpendicular to the reference plane α is an elbow insertion and extraction direction, and a direction parallel to the reference plane α is a radial direction.

The connector 20 is rotatable 360 ° relative to the main body 10 of the respirator. The connector 20 is a cylindrical structure and is typically made of a rigid material, including but not limited to, PC, ABS, PP, POM, pb engineering materials. The connector 20 includes an outer sidewall and an inner sidewall, and when the connector 20 is embedded in the pipe joint, at least a portion of the outer sidewall of the connector 20 is in clearance fit with the inner circumferential surface of the pipe joint, defining a degree of freedom of the connector 20 in a radial direction, and allowing the connector 20 to rotate relative to the main body 10 of the respiratory mask. The elbow joint 30 is arranged through the connecting piece 20, the inner side wall of the connecting piece 20 is in clearance fit with the outer side wall of the elbow joint 30, and the elbow joint 30 can rotate and slide relative to the connecting piece 20.

The inside wall of connecting piece 20 is provided with at least one first locating part 201, and elbow joint 30 is used for being provided with at least one second locating part 301 with breathing mask main part 10 grafting one end, and first locating part 201 and second locating part 301 quantity is the same and the one-to-one. The first limiting member 201 and the second limiting member 301 may be one or a combination of a buckle, a boss and a groove. The first limiting piece 201 and the connecting piece 20 can be made of split type structures, and then assembled together by means of bonding, welding and the like; the first limiting member 201 and the connecting member 20 may also be integrally formed, so as to have better strength. Likewise, the second limiting member 301 and the elbow 30 may be in a split type or an integral type.

Along the plugging direction of the elbow joint 30, the connecting piece 20 and the elbow joint 30 have a first relative position and a second relative position, the connecting piece 20 and the elbow joint 30 can be switched from the first relative position to the second relative position by pressing the elbow joint 30, during the switching process, the connecting piece 20 and the elbow joint 30 can undergo relative displacement, that is, the connecting piece 20 and the elbow joint 30 are already in contact when in the first relative position, and further pressing the elbow joint 30 can cause the connecting piece 20 or the elbow joint 30 to undergo elastic deformation, thereby generating an elastic displacement, and after the pressing operation is canceled, the connecting piece 20 or the elbow joint 30 is switched to the first relative position again under the action of elastic restoring force. An elastic medium may also be provided between the connector 20 and the elbow fitting 30 to provide the above-described amount of elastic displacement.

When the elbow joint 30 and the connecting piece 20 are in the first relative position, the first limiting piece 201 is clamped with the second limiting piece 301, so that the degree of freedom of relative rotation of the connecting piece 20 and the elbow joint 30 is limited, the elbow joint 30 and the connecting piece 20 are in an assembled state, the elbow joint 30 can rotate 360 degrees with the main body 10 of the breathing mask by using the connecting piece 20, and the flexibility of use is improved.

When the elbow 30 needs to be plugged, the elbow 30 can be pressed along the plugging direction of the elbow 30, so that the elbow 30 is relatively displaced with respect to the connector 20, and the first limiting member 201 and the second limiting member 301 are driven to be relatively displaced. When the elbow joint 30 and the connecting piece 20 are switched to the second relative position, the first limiting piece 201 and the second limiting piece 301 are relatively displaced and at least partially separated, at this time, the elbow joint 30 and the connecting piece 20 can relatively rotate, and the elbow joint 30 and the connecting piece 20 can be rotated to the pluggable position of the elbow joint 30, so that the elbow joint 30 is plugged and unplugged. The pluggable position of the elbow joint 30 is a position where the first limiting member 201 and the second limiting member 301 are staggered, and when the pluggable position is located at the position, the clamping action of the first limiting member 201 and the second limiting member 301 fails, so that the elbow joint 30 can be plugged and unplugged smoothly.

In the embodiment of the utility model, the elbow joint 30 is pluggable with the main body 10 of the breathing mask through the connecting piece 20, at least one first limiting piece 201 is arranged on the inner side wall of the connecting piece 20, and at least one second limiting piece 301 is arranged at one end of the elbow joint 30 for being plugged with the main body 10 of the breathing mask; along the plugging direction of the elbow joint 30, the elbow joint 30 and the connecting piece 20 have a first relative position and a second relative position, and the switching from the first relative position to the second relative position can be realized by pressing. When the first limiting piece 201 is positioned at the first relative position, the first limiting piece 201 is clamped with the second limiting piece 301 so as to limit the freedom degree of relative rotation of the connecting piece 20 and the elbow joint 30; in the second relative position, the first stop 201 is at least partially separated from the second stop 301 and allows the connector 20 and elbow 30 to be relatively rotated to the pluggable position of the elbow 30. The elbow joint 30 can be plugged and unplugged by pressing and rotating, the operation is simple and convenient, and in the plugging and unplugging process, the abrupt change of plugging and unplugging force does not exist, so that discomfort of a wearer can be avoided, and wearing comfort is improved.

Optionally, referring to fig. 1 to 4, the elbow plugging mechanism further includes: a flexible seal 40; the flexible seal 40 is located between the connector 20 and the elbow 30, the flexible seal 40 being adapted to provide elastic deformation when the first and second relative positions are switched.

Specifically, the flexible sealing member 40 may be made of soft rubber, and has a certain elasticity, including but not limited to silicone, rubber, latex, TPE, TPU, and the like. The thickness of the flexible seal member 40 is 0.2mm-8mm, and may be uniform or non-uniform. The flexible sealing element 40 is positioned between the connecting element 20 and the elbow joint 30, so that on one hand, the sealing effect can be achieved, and unexpected air leakage of an assembly gap is reduced; on the other hand, elastic deformation is provided for the detachment of the elbow 30 from the connector 20. When the elbow joint 30 and the connecting piece 20 are positioned at the first relative position, the elbow joint 30 and the connecting piece 20 are respectively abutted with the flexible sealing piece 40, and the first limiting piece 201 and the second limiting piece 301 can be stably clamped under the support of the flexible sealing piece 40, so that the assembly stability of the elbow joint 30 and the connecting piece 20 is ensured. When the elbow 30 is pressed in the plugging direction of the elbow 30, the flexible seal member 40 deforms and allows relative displacement between the elbow 30 and the connecting member 20, so that the elbow 30 and the connecting member 20 are switched to the second relative position to complete plugging of the elbow 30.

Alternatively, referring to fig. 4 and fig. 6 to fig. 8, the outer side wall of the elbow joint 30 is provided with a first concave portion 302, a first convex portion 303 and a second concave portion 304 in sequence from a direction approaching the second limiting member 301 to a direction separating from the second limiting member 301; when in the first relative position, the first limiting member 201 is at least partially embedded in the first concave portion 302, the first protruding portion 303 abuts against the inner sidewall of the connecting member 20, and the flexible sealing member 40 is at least partially embedded in the second concave portion 304.

Specifically, the first recess 302 is disposed near the second limiting member 301, and when the elbow joint 30 is assembled with the connecting member 20, that is, when the elbow joint 30 is in the first relative position with the connecting member 20, the first recess 302 is configured to accommodate at least a portion of the first limiting member 201, so as to ensure that the first limiting member 201 and the second limiting member 301 are stably clamped.

The first protrusion 303 is located between the first recess 302 and the second recess 304, and the first protrusion 303 has a larger outer diameter than the first recess 302 and the second recess 304. The first protrusion 303 functions to cooperate with the inner sidewall of the connector 20 when assembled, defining the freedom of the connector 20 in the radial direction.

A second recess 304 is located on the side of the elbow body, the second recess 304 serving to mount the flexible seal 40. The second recess 304 may stably retain the flexible seal 40 and may allow the flexible seal 40 to remain on the elbow 30 when the elbow 30 is removed from the connector 20.

Optionally, referring to fig. 4 and fig. 6 to fig. 8, the flexible sealing member 40 is sleeved on the outer side wall of the elbow joint 30; the periphery of the elbow joint 30 is provided with a raised flange 305, one side of the flexible seal member 40 abuts against the flange 305, and the other side of the flexible seal member 40 abuts against the first protrusion 303 and/or the connecting member 20 and/or the breathing mask body 10.

Specifically, the circumferential side of the elbow joint 30 is provided with a raised flange 305, and the flange 305 may be continuously distributed or discontinuously distributed on the circumferential side of the elbow joint 30. The outer diameter of flange 305 approximates the outer diameter of flexible seal 40, and flange 305 acts to support and define the position of flexible seal 40 when assembled. In one embodiment of the present utility model, the flange 305 may not be provided, for example, the overall outer diameter of the elbow body may be made large. When assembled, one side of the flexible seal 40 abuts the flange 305 and the other side of the flexible seal 40 abuts the first protrusion 303 and/or the connector 20 and/or the respiratory mask body 10.

In one embodiment of the present utility model, one side of the flexible seal member 40 abuts the flange 305, and the other side of the flexible seal member 40 abuts the first protrusion 303 of the elbow 30, the connection member 20, and the respiratory mask body 10, at which time the flexible seal member 40 can simultaneously seal the gap between the respiratory mask body 10 and the connection member 20, and the gap between the connection member 20 and the elbow 30, reducing the undesirable leakage of the assembly gap. It is also within the scope of this patent that the flexible seal 40 only seals a certain specific gap. For example, one side of the flexible seal member 40 abuts against the flange 305, and the other side of the flexible seal member 40 abuts against the first protrusion 303 of the elbow joint 30 and the connection member 20, and at this time, the flexible seal member 40 is only used to seal the gap between the connection member 20 and the elbow joint 30; as a modification, one side of the flexible seal member 40 abuts the flange 305, and the other side of the flexible seal member 40 abuts the connection member 20 and the breathing mask body 10, and at this time, the flexible seal member 40 only serves to seal the gap between the connection member 20 and the breathing mask body 10.

Optionally, referring to fig. 4 and fig. 9 to fig. 11, the connector 20 has a first end and a second end opposite to each other along the plugging direction of the elbow 30, the outer sidewall protrusion at the first end forms a first buckling position 202, and the outer sidewall protrusion at the second end forms a second buckling position 203; the first fastening portion 202 and the second fastening portion 203 are respectively fastened to the main body 10 of the breathing mask, so as to limit the degree of freedom of the connecting piece 20 relative to the main body 10 of the breathing mask along the insertion and extraction direction of the elbow joint 30.

Specifically, the connector 20 has opposite first and second ends along the insertion and extraction direction of the elbow joint 30, a first button 202 being formed at the first end and a second button 203 being formed at the second end. The first buckling position 202 and the second buckling position 203 are protruded outwards relative to the outer side wall of the connecting piece 20, and circumferentially distributed around the outer side wall of the connecting piece 20. The first and second fastening portions 202, 203 may be continuous or discontinuous on the outer side wall of the connector 20. During assembly, the first buckling position 202 and the second buckling position 203 of the connecting piece 20 are clamped at two sides of the pipeline joint of the breathing mask main body 10, so that the degree of freedom of the connecting piece 20 along the inserting and pulling direction of the elbow joint 30 is limited, and the problem that the connecting piece 20 is separated from the breathing mask main body 10 when the elbow joint 30 is inserted and pulled is avoided.

Alternatively, referring to fig. 4 and fig. 9 to 15, the first limiting member 201 includes a second protruding portion 2011, a third recessed portion 2012, and a third protruding portion 2013 arranged along a circumferential direction of an inner sidewall of the connecting member 20, and the third recessed portion 2012 is located between the second protruding portion 2011 and the third protruding portion 2013; the height of the second protruding part 2011 is greater than the height of the third protruding part 2013 along the plugging direction of the elbow 30; when the second limiting member 301 is at the first relative position, the second limiting member 301 is embedded in the third recess 2012, and two ends of the second limiting member 301 are respectively abutted against the second protruding portion 2011 and the third protruding portion 2013; in the second relative position, the second stopper 301 is separated from the third recess 2012, and the second stopper 301 is allowed to slide out from the third projection 2013.

Specifically, the protruding or recessed directions of the second protruding portion 2011, the third recessed portion 2012, and the third protruding portion 2013 are directions along the insertion and extraction direction and directed toward the respiratory mask. The third recess 2012 is located between the second projection 2011 and the third projection 2013. Further, the height of the second protruding portion 2011 is higher than the height of the third protruding portion 2013.

When the elbow 30 and the connector 20 are in the first relative position, the second limiting member 301 of the elbow 30 is just clamped in the third recess 2012 (see fig. 12), and since the second protruding portions 2011 and the third protruding portions 2013 on two sides of the third recess 2012 protrude a part higher than the third recess 2012, when the respiratory mask is worn normally, the elbow 30 and the connector 20 can be guaranteed to be still relatively all the time during the rotation of the elbow 30 relative to the respiratory mask body 10. Further, the third recess 2012 further defines a degree of freedom of the elbow 30 in the plugging direction relative to the connector 20, so that the elbow 30 is not easy to be pulled out from the connector 20 during normal wear.

During the pressing operation (see fig. 13), the user applies a force to the elbow joint 30 in the direction of inserting and extracting the mask body 10, at this time, the flexible sealing member 40 is elastically deformed and provides an elastic force for restoring the original shape, the elbow joint 30 moves a distance in the direction of inserting and extracting the mask body 10 relative to the connecting member 20, the second limiting member 301 of the mask body 10 moves out of the third recess 2012 of the connecting member 20, and at this time, the position of the second limiting member 301 is located between the second protruding portion 2011 and the third protruding portion 2013. The user then applies a torque to elbow 30, which elbow 30 is rotated at an angle relative to connector 20. The second limiting member 301 of the elbow connector 30 moves towards the third protruding portion 2013 (see fig. 14), and is separated from the third protruding portion 2013 until the second limiting member 301 is dislocated from the first limiting member 201, and the elbow connector 30 is rotated to a pluggable position, so that the elbow connector 30 can be plugged into and unplugged from the connecting member 20 (see fig. 15).

The rotation operation for the elbow joint 30 needs to be performed on the basis of the pressing operation. Also, the flexible seal member 40 is in an elastically deformed state at the time of both the pressing operation and the rotating operation. In the assembled state, the flexible sealing member 40 is in an original shape or has a small elastic deformation, so that the second limiting member 301 is stably held in the third recess 2012.

Optionally, referring to fig. 9 to 11, at least one side of the third protrusion 2013 is provided with a chamfer structure.

Specifically, in the process that the second limiting member 301 is separated from the third recess 2012, friction may occur between the second limiting member 301 and the third protruding portion 2013, so that smooth disassembly and assembly of the elbow joint 30 are facilitated, at least one side of the third protruding portion 2013 is provided with a chamfer, and an inclined plane can be provided on the third protruding portion 2013, and the chamfer can play a guiding role on the second limiting member 301, so that disassembly and assembly of the elbow joint 30 are facilitated.

Alternatively, referring to fig. 1 to 11, the elbow plug mechanism includes a plurality of first stoppers 201 and a plurality of second stoppers 301 corresponding to the first stoppers 201 one by one; the first limiting members 201 are arranged at intervals along the circumferential direction of the inner side wall of the connecting member 20, and the second limiting members 301 are arranged at intervals along the circumferential direction of the elbow joint 30.

Specifically, the first limiting members 201 and the second limiting members 301 are consistent in number, the first limiting members 201 are arranged at intervals along the circumferential direction of the inner side wall of the connecting member 20, and the second limiting members 301 are arranged at intervals along the circumferential direction of the elbow joint 30. The specific number of first and second stop members 201, 301 may be selected according to the dimensions of elbow joint 30 and connector 20, for example, in one embodiment of the present utility model, the number of first and second stop members 201, 301 is 6, where the included angle between any two adjacent first stop members 201 or any two adjacent second stop members 301 is 60 °.

When the connecting piece 20 and the elbow joint 30 are positioned at the first relative position, the stability of the assembly of the connecting piece 20 and the elbow joint 30 can be improved under the clamping fit of the plurality of groups of first limiting pieces 201 and the second limiting pieces 301. When the elbow joint 30 is plugged, the elbow joint 30 is plugged only by pressing the elbow joint 30, so that the connecting piece 20 and the elbow joint 30 are switched to the second relative position, and a rotation torque is applied to the elbow joint 30, so that the elbow joint 30 rotates relative to the connecting piece 20 until the first limiting piece 201 and the second limiting piece 301 are in the misplaced positions, and the elbow joint 30 can be plugged.

The embodiment of the utility model also discloses a breathing mask which comprises the elbow pipe plugging mechanism.

The elbow plug mechanism may also be used anywhere in the conduit to which the respiratory mask is connected, including in particular a series of adapters for the respiratory mask connection conduit, such as the first adapter 50 and the second adapter 60 of fig. 16 and 17.

Referring to fig. 16, the structural features of the connector 20 are disposed in the first adapter 50. A dismounting and sealing structure is formed between the first adapter 50, the flexible seal 40, and the elbow 30.

Referring to fig. 17, the structural features of the connector 20 are provided in the first adapter 50, while the structural features of the elbow 30 are provided in the second adapter 60. A dismounting and sealing structure is formed among the first adapter 50, the flexible sealing member 40 and the second adapter 60.

In the embodiment of the utility model, the respiratory mask adopts the elbow plug mechanism, the elbow joint 30 is plugged with the respiratory mask main body 10 through the connecting piece 20, the inner side wall of the connecting piece 20 is provided with at least one first limiting piece 201, and one end of the elbow joint 30 for plugging with the respiratory mask main body 10 is provided with at least one second limiting piece 301; along the plugging direction of the elbow joint 30, the elbow joint 30 and the connecting piece 20 have a first relative position and a second relative position, and the switching from the first relative position to the second relative position can be realized by pressing. When the first limiting piece 201 is positioned at the first relative position, the first limiting piece 201 is clamped with the second limiting piece 301 so as to limit the freedom degree of relative rotation of the connecting piece 20 and the elbow joint 30; in the second relative position, the first stop 201 is at least partially separated from the second stop 301 and allows the connector 20 and elbow 30 to be relatively rotated to the pluggable position of the elbow 30. The elbow joint 30 can be plugged and unplugged by pressing and rotating, the operation is simple and convenient, and in the plugging and unplugging process, the abrupt change of plugging and unplugging force does not exist, so that discomfort of a wearer can be avoided, and wearing comfort is improved.

The embodiment of the utility model also discloses ventilation treatment equipment comprising the breathing mask.

The ventilation treatment equipment also comprises a control device, an oxygen therapy instrument and a gas pipeline, wherein the oxygen therapy instrument is communicated with the breathing mask through the gas pipeline and the bent pipe. The control device is used for controlling the oxygen supply amount, the working time and the like of the oxygen therapy instrument, and can be an electronic device or a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. The electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm computer, a mobile internet device, a robot, a wearable device, or the like, which is not particularly limited in the embodiment of the present utility model.

In the embodiment of the utility model, the ventilation treatment equipment adopts the breathing mask with the elbow plug-in mechanism, the elbow joint 30 can be plugged into and pulled out of the breathing mask main body 10 through the connecting piece 20, at least one first limiting piece 201 is arranged on the inner side wall of the connecting piece 20, and at least one second limiting piece 301 is arranged at one end of the elbow joint 30 for plugging into the breathing mask main body 10; along the plugging direction of the elbow joint 30, the elbow joint 30 and the connecting piece 20 have a first relative position and a second relative position, and the switching from the first relative position to the second relative position can be realized by pressing. When the first limiting piece 201 is positioned at the first relative position, the first limiting piece 201 is clamped with the second limiting piece 301 so as to limit the freedom degree of relative rotation of the connecting piece 20 and the elbow joint 30; in the second relative position, the first stop 201 is at least partially separated from the second stop 301 and allows the connector 20 and elbow 30 to be relatively rotated to the pluggable position of the elbow 30. The elbow joint 30 can be plugged and unplugged by pressing and rotating, the operation is simple and convenient, and in the plugging and unplugging process, the abrupt change of plugging and unplugging force does not exist, so that discomfort of a wearer can be avoided, and wearing comfort is improved.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.

Claims (10)

1. The utility model provides a return bend plug mechanism which characterized in that includes: a respiratory mask body, a connector and an elbow joint;

the breathing mask comprises a breathing mask main body and is characterized in that the breathing mask main body is provided with a pipeline interface, the connecting piece is embedded in the pipeline interface and is of a cylindrical structure, and at least part of the outer side wall of the connecting piece is in clearance fit with the inner peripheral surface of the pipeline interface;

the elbow joint penetrates through the connecting piece, and the outer side wall of the elbow joint is in clearance fit with the inner side wall of the connecting piece;

the inner side wall of the connecting piece is provided with at least one first limiting piece, and one end of the elbow joint, which is used for being spliced with the main body of the breathing mask, is provided with at least one second limiting piece;

when the elbow joint and the connecting piece are positioned at a first relative position, the first limiting piece is clamped with the second limiting piece so as to limit the freedom degree of relative rotation of the connecting piece and the elbow joint;

and pressing the elbow joint along the plugging direction of the elbow joint so as to switch the elbow joint and the connecting piece to a second relative position relatively close to each other, wherein when the elbow joint is positioned at the second relative position, the first limiting piece and the second limiting piece are at least partially separated, and the connecting piece and the elbow joint are allowed to relatively rotate to the pluggable position of the elbow joint.

2. The elbow plug mechanism of claim 1, further comprising: a flexible seal;

the flexible seal is located between the connector and the elbow, the flexible seal being adapted to provide elastic deformation when the first and second relative positions are switched.

3. The elbow plugging mechanism according to claim 2, wherein the outer side wall of the elbow joint is provided with a first concave portion, a first convex portion and a second concave portion in sequence from the direction from being close to the second limiting member to the direction from being far away from the second limiting member;

when the flexible sealing element is positioned at the first relative position, the first limiting element is at least partially embedded in the first concave part, the first protruding part is abutted with the inner side wall of the connecting element, and the flexible sealing element is at least partially embedded in the second concave part.

4. The elbow plug mechanism according to claim 3, wherein the flexible seal is sleeved on an outer sidewall of the elbow joint;

the periphery side of elbow joint is provided with bellied flange, one side of flexible sealing member with the flange butt, the opposite side of flexible sealing member with first bulge and/or connecting piece and/or respirator main part butt.

5. The elbow plug mechanism according to claim 1, wherein the connector has opposite first and second ends along the plug direction of the elbow joint, the outer sidewall protrusion at the first end forming a first button location and the outer sidewall protrusion at the second end forming a second button location;

the first buckling position and the second buckling position are respectively clamped with the main body of the breathing mask so as to limit the freedom degree of the connecting piece relative to the breathing mask main body along the inserting and extracting direction of the elbow joint.

6. The elbow plug mechanism according to claim 1, wherein the first stop member includes a second projection, a third recess, and a third projection arranged along a circumferential direction of an inner sidewall of the connecting member, the third recess being located between the second projection and the third projection;

the height of the second protruding part is larger than that of the third protruding part along the inserting and pulling direction of the elbow joint;

when the first limiting piece is positioned at the first relative position, the second limiting piece is embedded in the third concave part, and two ends of the second limiting piece are respectively abutted with the second protruding part and the third protruding part;

when the second limiting piece is positioned at the second relative position, the second limiting piece is separated from the third concave part, and the second limiting piece is allowed to slide out from one side of the third protruding part.

7. The elbow plug mechanism according to claim 6, wherein at least one side of the third projection is provided with a chamfer structure.

8. The elbow plug mechanism according to claim 1, wherein the elbow plug mechanism comprises a plurality of the first limiting members and a plurality of the second limiting members in one-to-one correspondence with the first limiting members;

the first limiting parts are arranged at intervals along the circumference of the inner side wall of the connecting piece, and the second limiting parts are arranged at intervals along the circumference of the elbow joint.

9. A respiratory mask, comprising: the elbow plug mechanism of any one of claims 1-8.

10. A ventilation therapy apparatus, comprising: the respiratory mask of claim 9.

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