Bent pipe assembly and breathing mask

Abstract

The utility model relates to a bent pipe assembly and a breathing mask, and relates to the technical field of ventilation treatment. The elbow pipe assembly comprises an elbow pipe joint and a flexible pipe joint connected with the elbow pipe joint, one or two of the elbow pipe joint and the flexible pipe joint is / are provided with a detachable connecting structure, and the elbow pipe joint and the flexible pipe joint are connected through the detachable connecting structure. The detachable connecting structure comprises a deformable part or a threaded part, and the deformable part is constructed to be capable of deforming when being stressed, so that the bent pipe joint and the flexible pipe joint are allowed to be connected or separated from each other. The flexible pipe joint, the flexible pipe, the elbow joint and the breathing mask can be freely inserted and pulled out by enabling the deformable part to deform without applying large force, so that the flexible pipe joint is more flexible and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of ventilation therapy technology, and in particular to a curved tube assembly and a breathing mask. Background Technology

[0002] Existing breathing masks typically connect a curved tube to a flexible tube. One method involves a mating section between the flexible tube and the curved tube, forming a non-removable unit that prevents free insertion and removal during use. Another method involves a smooth, rigid section within the curved tube, with the flexible tube's end made of silicone. When mated, the deformation and friction between the materials provide the necessary force for connection. However, this method results in significant friction between the silicone flexible material and the rigid tube, requiring substantial and sustained force for disassembly and assembly. Therefore, both connection methods suffer from inflexible and inconvenient disassembly and assembly. Utility Model Content

[0003] This utility model provides a bent tube assembly and a breathing mask to solve at least one of the above-mentioned technical problems.

[0004] According to a first aspect of the present invention, the present invention provides a bend assembly, including a bend connector and a flexible connector connected to the bend connector, wherein the side of the bend connector away from the flexible connector is connected to a breathing mask, the side of the flexible connector away from the bend connector is connected to one end of an air intake pipe, and the other end of the air intake pipe is connected to a gas generator.

[0005] One or both of the elbow joint and the flexible pipe joint are provided with a detachable connection structure, and the elbow joint and the flexible pipe joint are connected through the detachable connection structure.

[0006] The detachable connection structure includes a deformable part or a threaded part. The deformable part is configured to deform under stress, thereby allowing the bend joint and the flexible pipe joint to connect or separate from each other.

[0007] In one embodiment, the flexible fitting is made of a flexible silicone material or a rigid material with deformability.

[0008] In one embodiment, the deformable part includes an opening groove disposed on the bend joint or the flexible pipe joint. The opening groove can contract or expand when subjected to force to allow the bend joint and the flexible pipe joint to be inserted into or separated from each other.

[0009] In one embodiment, the deformable part further includes an annular buckle, and the annular buckle and the opening groove are both disposed on the outer wall of the bend joint, or both are disposed on the outer wall of the flexible pipe joint, and the opening groove penetrates the annular buckle.

[0010] In one embodiment, the detachable connection structure further includes a first limiting part, which is disposed on the inner wall of the bend joint or the inner wall of the flexible pipe joint, and is used to engage with the annular buckle for connection.

[0011] In one embodiment, the deformable part includes an opening groove and an opening groove mating part. The opening groove is disposed on one of the bend joint and the flexible pipe joint, and the opening groove mating part is disposed on the other of the bend joint and the flexible pipe joint. The opening groove mating part is configured to engage with the opening groove and to cause the opening groove to expand under force when engaging or disengaging with the opening groove.

[0012] In one embodiment, the opening groove includes a receiving groove and a first groove disposed on the inner wall of the receiving groove, the opening groove mating part includes a receiving groove buckle and a first protrusion disposed on the outside of the receiving groove buckle, and the opening groove mating part is configured such that when the receiving groove buckle is located in the receiving groove, the first protrusion is located in the first groove.

[0013] In one embodiment, the first groove is an arc-shaped groove or a rectangular groove, and the first protrusion is an arc-shaped protrusion or a rectangular protrusion.

[0014] In one embodiment, the detachable connection structure further includes a second limiting portion, which includes a second groove and a second protrusion that engage with each other. The second groove is located on one of the bend joint and the flexible pipe joint, and the second protrusion is located on the other of the bend joint and the flexible pipe joint.

[0015] In one embodiment, the flexible pipe joint includes a first joint and a second joint, which are inserted and connected together. The side of the first joint away from the second joint is used to connect to the bend pipe joint, and the side of the second joint away from the first joint is used to connect to the flexible pipe.

[0016] In one embodiment, one of the first connector and the second connector is provided with a connection hole, and the other of the first connector and the second connector is provided with a third protrusion that can be inserted into the connection hole.

[0017] In one embodiment, one or both of the bend joint and the flexible pipe joint are provided with a limiting boss, the limiting boss on the bend joint being able to abut against the end of the flexible pipe joint or against the limiting boss on the flexible pipe joint; the limiting boss on the flexible pipe joint being able to abut against the end of the bend joint or against the limiting boss on the bend joint.

[0018] In one embodiment, the number of the opening slots is one or more.

[0019] According to a second aspect of the present invention, the present invention provides a breathing mask, including a mask body and the aforementioned curved tube assembly, wherein the curved tube assembly is connected to the mask body.

[0020] Compared with the prior art, the advantage of this utility model is that, since the deformable part can deform under force, it allows the bend joint and the flexible pipe joint to be connected or separated from each other. Therefore, during use, no large force needs to be applied to deform the deformable part to achieve free insertion and removal between the flexible pipe joint and the flexible pipe, the bend joint and the breathing mask. Therefore, it is more flexible and convenient to use. Attached Figure Description

[0021] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0022] Figure 1 This is a three-dimensional structural diagram of the pipe bending assembly in Embodiment 1 of this utility model;

[0023] Figure 2 This is an exploded view of the pipe bending assembly in Embodiment 1 of this utility model;

[0024] Figure 3 This is a front view of the pipe bending assembly in Embodiment 1 of this utility model;

[0025] Figure 4 yes Figure 3 Sectional view at AA;

[0026] Figure 5 yes Figure 4 Enlarged view at point A;

[0027] Figure 6 yes Figure 4 Enlarged view at point B;

[0028] Figure 7 This is a three-dimensional structural diagram of the pipe bending assembly in Embodiment 2 of this utility model;

[0029] Figure 8 This is an exploded view of the pipe bending assembly in Embodiment 2 of this utility model;

[0030] Figure 9 This is a cross-sectional view of the pipe bending assembly in Embodiment 2 of this utility model, wherein the pipe bending joint and the flexible pipe joint are in a separate state.

[0031] Figure 10 This is a cross-sectional view of the pipe bending assembly in Embodiment 2 of this utility model, wherein the pipe bending joint and the flexible pipe joint are in an inserted state.

[0032] Figure 11 yes Figure 10 Enlarged view at point C;

[0033] Figure 12 This is a three-dimensional structural diagram of the pipe bending assembly in Embodiment 3 of this utility model;

[0034] Figure 13 This is an exploded view of the pipe bending assembly in Embodiment 3 of this utility model;

[0035] Figure 14 yes Figure 13 Enlarged view of the centrally opened groove mating part;

[0036] Figure 15 yes Figure 13 Enlarged view of the centrally located groove;

[0037] Figure 16 This is a three-dimensional structural diagram of the pipe bending assembly in Embodiment 4 of this utility model;

[0038] Figure 17 This is an exploded view of the pipe bending assembly in Embodiment 4 of this utility model;

[0039] Figure 18 yes Figure 17 Enlarged view of the centrally opened groove mating part;

[0040] Figure 19 yes Figure 17 Enlarged view of the centrally located groove;

[0041] Figure 20 This is a schematic diagram showing the insertion direction of the bend joint and the flexible pipe joint in the bend assembly of Embodiment 4 of this utility model.

[0042] Figure 21 This is a schematic diagram showing the rotation direction of the bend joint and the flexible pipe joint in the bend assembly of Embodiment 4 of this utility model.

[0043] Figure 22 This is a three-dimensional structural diagram of the pipe bending assembly in Embodiment 5 of this utility model;

[0044] Figure 23 This is an exploded view of the pipe bending assembly in Embodiment 5 of this utility model;

[0045] Figure 24 This is a cross-sectional view of the pipe bending assembly in Embodiment 5 of this utility model, wherein the pipe bending joint and the flexible pipe joint are in an inserted state.

[0046] Figure 25 This is a cross-sectional view of the pipe bending assembly in Embodiment 5 of this utility model, wherein the pipe bending joint and the flexible pipe joint are in a separate state.

[0047] Figure 26 This is a three-dimensional structural diagram of the pipe bending assembly in Embodiment 6 of this utility model;

[0048] Figure 27 This is an exploded view of the pipe bending assembly in Embodiment 6 of this utility model;

[0049] Figure 28 This is a cross-sectional view of the pipe bending assembly in Embodiment 6 of this utility model, wherein the pipe bending joint and the flexible pipe joint are in a separate state.

[0050] Figure label:

[0051] 3. Deformable part; 4. Threaded part;

[0052] 31. Opening groove; 32. Ring buckle; 33. First limiting part; 34. Opening groove mating part; 35. Second limiting part;

[0053] 311. Receiving groove; 312. First groove; 3121. Second protrusion; 3122. Second recess;

[0054] 321. First annular protrusion; 322. Annular groove;

[0055] 331. Second annular protrusion; 332. Annular step; 333. Guide surface;

[0056] 341. Receiving groove latch; 342. First protrusion; 3421. First protruding portion; 3422. First recessed portion;

[0057] 351. Second groove; 352. Second protrusion;

[0058] 41. First threaded portion; 42. Second threaded portion;

[0059] 5. Pipe bend connector; 51. Flexible pipe connection part; 52. Pipe bend body; 53. Mask connection part; 54. Pipe bend connector limiting boss;

[0060] 511. Guide end;

[0061] 6. Flexible pipe fittings;

[0062] 61. First connector; 62. Second connector;

[0063] 611. First connection port; 612. Second connection port; 621. Third connection port; 622. Anti-slip part;

[0064] 63. Connecting hole; 64. Third protrusion; 65. Flexible pipe joint limiting boss;

[0065] 7. Flexible pipe. Detailed Implementation

[0066] The present invention will be further described below with reference to the accompanying drawings.

[0067] This invention provides a bent tube assembly, more specifically, a freely detachable bent tube assembly for connecting a breathing mask (not shown) and an air intake line. Specifically, the bent tube assembly includes a bent tube connector 5 and a flexible tube connector 6 connected to the bent tube connector 5. The side of the bent tube connector 5 away from the flexible tube connector 6 is connected to the breathing mask, and the side of the flexible tube connector 6 away from the bent tube connector 5 is connected to one end of the air intake line. The other end of the air intake line is connected to a gas generator (gas source). The air intake line can be, for example, a flexible tube 7. Therefore, breathable gas can be provided to the breathing mask through the flexible tube 7 and the bent tube assembly.

[0068] One or both of the bend joint 5 and the flexible joint 6 are provided with a detachable connection structure, and the bend joint 5 and the flexible joint 6 are connected by the detachable connection structure.

[0069] The detachable connection structure includes a deformable part 3 or a threaded part 4. The deformable part 3 is designed to deform under force, allowing the elbow joint 5 and the flexible tube joint 6 to connect or separate from each other. Therefore, during use, the flexible tube joint 6 and the flexible tube 7 can be freely inserted and removed from the elbow joint 5 and the breathing mask without applying a large force, thus making it more flexible and convenient to use.

[0070] Example 1

[0071] The deformable part 3 includes an opening groove 31, which is provided on the bend joint 5 or the flexible pipe joint 6. The opening groove 31 can contract or expand when subjected to force, so as to allow the bend joint 5 and the flexible pipe joint 6 to be inserted into each other or separated from each other.

[0072] like Figure 1 and Figure 2As shown, the opening slot 31 is provided on the elbow connector 5. Specifically, the elbow connector 5 includes an elbow body 52 and flexible tubing connection parts 51 and mask connection parts 53 respectively provided on both sides of the elbow body 52. ​​The flexible tubing connection parts 51 can be connected to the flexible tube connector 6, and the mask connection parts 53 can be connected to a breathing mask. The elbow body 52 is constructed with a bent structure, so that there is a certain angle between the extending directions of the flexible tubing connection parts 51 and the mask connection parts 53.

[0073] The opening groove 31 can be provided on the flexible pipe connection part 51, for example. The opening groove 31 extends axially from the end of the flexible pipe connection part 51, that is, the opening of the opening groove 31 is located at the end of the flexible pipe connection part 51. Therefore, when the flexible pipe connection part 51 is inserted into the flexible pipe joint 6, a force can be applied to the flexible pipe connection part 51. Due to the opening groove 31, a deformable space is provided for the flexible pipe connection part 51, causing the end of the flexible pipe connection part 51 and the opening groove 31 to deform towards the axis, so that the flexible pipe connection part 51 can be inserted into the flexible pipe joint 6.

[0074] Understandably, the opening groove 31 can also be provided on the flexible pipe joint 6, and its arrangement is similar to that described above.

[0075] Furthermore, the deformable part 3 also includes an annular snap fastener 32. Both the annular snap fastener 32 and the opening groove 31 are disposed on the outer wall of the bend joint 5, or both are disposed on the outer wall of the flexible pipe joint 6, with the opening groove 31 penetrating the annular snap fastener 32. The annular snap fastener 32 not only generates deformation to connect with the flexible pipe joint 6, but also serves as an axial limiting function between the bend joint 5 and the flexible pipe joint 6. Further, the detachable connection structure also includes a first limiting part 33 that cooperates (engages) with the annular snap fastener 32. Therefore, the first limiting part 33 depends on the placement position of the annular snap fastener 32. For example, if the annular snap fastener 32 is disposed on the bend joint 5, the first limiting part 33 can be disposed on the flexible pipe joint 6; conversely, if the annular snap fastener 32 is disposed on the flexible pipe joint 6, the first limiting part 33 can be disposed on the bend joint 5.

[0076] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment 1, the annular buckle 32 is set on the bend joint 5 and the first limiting part 33 is set on the flexible pipe joint 6 as an example for explanation.

[0077] like Figure 2 and Figure 5As shown, both the annular snap fastener 32 and the opening groove 31 are disposed on the outer wall of the bend connector 5. More specifically, both the annular snap fastener 32 and the opening groove 31 are disposed on the outer wall of the flexible pipe connection portion 51, with the opening groove 31 penetrating through the annular snap fastener 32. The annular snap fastener 32 includes a first annular protrusion 321 and an annular groove 322 arranged sequentially along the axial direction of the flexible pipe connection portion 51. Since the opening groove 31 penetrates the first annular protrusion 321 and the annular groove 322, when the flexible pipe connection portion 51 is subjected to force, the first annular protrusion 321, the annular groove 322, and the opening groove 31 can all undergo axial contraction deformation.

[0078] The first limiting part 33 is constructed as a second annular protrusion 331 provided on the inner wall of the flexible pipe joint 6, such as Figure 5 As shown, the second annular protrusion 331 has inclined guide surfaces 333 on both sides. Correspondingly, the inner walls of the annular groove 322 are also guide surfaces with the same inclination. That is, the shape of the second annular protrusion 331 is approximately the same as the shape of the annular groove 322. Therefore, the second annular protrusion 331 can be inserted into the annular groove 322. During the process of the second annular protrusion 331 being inserted into the annular groove 322, due to the opening groove 31, the second annular protrusion 331 can first contact the first annular protrusion 321 and cause it to deform. As a result, the first annular protrusion 321 can shrink towards the axis as a load-bearing part. Then, the second annular protrusion 331 can pass over the first annular protrusion 321 and be inserted into the annular groove 322, so that the flexible pipe connection part 51 can be connected to the flexible pipe joint 6.

[0079] When the flexible pipe connector 51 is inserted into the flexible pipe joint 6 (more specifically, the first joint 61), the first annular protrusion 321 on it first contacts the inner wall of the flexible pipe joint 6. Therefore, the end of the first annular protrusion 321 can be set as an inclined guide surface, which facilitates the flexible pipe joint 6 to apply force to it and deform it. Therefore, during disassembly and assembly, when the flexible pipe connector 51 of the elbow joint 5 is subjected to a tensile or pushing force along the axial direction of the flexible pipe joint 6, the first annular protrusion 321 is subjected to a portion of the force perpendicular to the axial direction by the inclined guide surface. The first annular protrusion 321 deforms and contracts towards the axis, allowing it to pass over the second annular protrusion 331 on the flexible pipe joint 6, thereby realizing the free disassembly and assembly of the elbow joint 5 and the flexible pipe joint 6.

[0080] The number of openings 31 can be one or more, and multiple openings 31 can be arranged at equal intervals along the circumference of the flexible pipe connection 51, for example. Figure 2 As shown, the two open slots 31 are symmetrically arranged along the axis of the flexible pipe connection part 51.

[0081] like Figure 2As shown, the first annular protrusion 321 and the annular groove 322 extend throughout the entire circumference of the flexible conduit connection portion 51, and are interrupted only at the two opening slots 31. Conversely, multiple first annular protrusions 321 and / or annular grooves 322 can be intermittently provided in the circumference of the flexible conduit connection portion 51, as long as the mating second annular protrusion 331 can be engaged in the annular groove 322.

[0082] like Figure 2 As shown, the flexible pipe joint 6 in this embodiment 1 includes a first joint 61 and a second joint 62, wherein the first joint 61 and the second joint 62 are detachably connected, for example, by insertion. The side of the first joint 61 away from the second joint 62 is used to connect to the flexible pipe connection portion 51 of the bend joint 5, and the side of the second joint 62 away from the first joint 61 is used to connect to the flexible pipe 7. More specifically, the first joint 61 includes a first connection port 611 and a second connection port 612 located at its two ends, wherein the first connection port 611 is used for insertion connection with the flexible pipe connection portion 51, and the second connection port 612 is used for insertion connection with the third connection port 621 of the second joint 62.

[0083] One of the first connector 61 and the second connector 62 is provided with a connecting hole 63, and the other of the first connector 61 and the second connector 62 is provided with a third protrusion 64 that can be inserted into the connecting hole 63. Figure 2 and Figure 6 As shown, the connecting hole 63 can be set on the side wall of the second connecting port 612, and correspondingly, the third protrusion 64 can be set at the corresponding position on the third connecting port 621, so that when the second connecting port 612 is inserted into the third connecting port 621, the third protrusion 64 can be inserted into the connecting hole 63 accordingly.

[0084] In this embodiment 1, the first connector 61 and / or the second connector 62 can be made of flexible silicone material, or they can be made of a rigid material with a certain degree of deformability. Therefore, when they are connected by insertion, they can undergo slight deformation, so that the third protrusion 64 can be inserted into the connection hole 63 accordingly.

[0085] The number of connecting holes 63 can be one or more, and multiple connecting holes 63 can be evenly spaced along the circumference of the second connecting port 612, for example. Correspondingly, the number of third protrusions 64 should be the same as the number of connecting holes 63. Figure 4 As shown, the two connecting holes 63 are symmetrically arranged along the axis of the second connector 62, and the two third protrusions 64 are correspondingly symmetrically arranged along the axis of the second connector 62.

[0086] One or both of the bend joint 5 and the flexible joint 6 are provided with a limiting boss. The limiting boss on the bend joint 5 can abut against the end of the flexible joint 6 or against the limiting boss on the flexible joint 6. The limiting boss on the flexible joint 6 can abut against the end of the bend joint 5 or against the limiting boss on the bend joint 5.

[0087] like Figure 2 and Figure 4 As shown, in this embodiment 1, a limiting boss, namely the bend joint limiting boss 54, is provided on the flexible pipe connection part 51 of the bend joint 5. When the flexible pipe connection part 51 of the bend joint 5 is inserted into the first connection port 611 and the second annular protrusion 331 is engaged in the annular groove 322, the end of the flexible pipe joint 6 (more specifically, the first joint 61) abuts against the bend joint limiting boss 54, thereby providing axial limiting for the connection between the bend joint 5 and the flexible pipe joint 6.

[0088] Example 2

[0089] Based on the above embodiment 1, this embodiment 2 provides a modified embodiment.

[0090] like Figure 7 and Figure 9 As shown, the bend connector 5 includes a bend body 52 and flexible pipe connection parts 51 and mask connection parts 53 respectively disposed on both sides of the bend body 52. ​​That is, the bend connector 5 can adopt a structural form similar to that of Embodiment 1 above.

[0091] like Figure 7 As shown, the flexible pipe joint 6 includes a first joint 61 and a second joint 62. Unlike the above embodiment 1, the first joint 61 and the second joint 62 in this embodiment 2 can be constructed as an integral unit.

[0092] like Figure 7 , Figure 9 , Figure 10 and Figure 11 As shown, in this embodiment 2, both the annular buckle 32 and the opening groove 31 are disposed on the outer wall of the flexible pipe joint 6. More specifically, both the annular buckle 32 and the opening groove 31 are disposed on the outer wall of the first joint 61. The annular buckle 32 extends circumferentially along the first joint 61, and the opening groove 31 extends axially along the first joint 61.

[0093] The number of openings 31 can be one or more, and multiple openings 31 can be arranged at equal intervals along the circumference of the first joint 61, for example. Figure 8 As shown, the two opening slots 31 are symmetrically arranged along the axis of the first connector 61.

[0094] The annular snap fastener 32 and the opening slot 31 can adopt the structural form in Embodiment 1 above. For example, the annular snap fastener 32 can extend throughout the entire circumference of the first connector 61 and be interrupted only at the two opening slots 31, or multiple annular snap fasteners 32 can be intermittently provided in the circumference of the first connector 61. The end of the annular snap fastener 32 can be configured as an inclined guide surface to facilitate the flexible pipe connection part 51 to apply force to it and deform it.

[0095] In this embodiment 2, the first connector 61 is inserted into the flexible pipe connection part 51, and the two are connected by insertion. Therefore, when the first connector 61 is inserted into the flexible pipe connection part 51, the flexible pipe connection part 51 can apply force to the annular buckle 32 and the opening groove 31 on the first connector 61 to cause axial deformation, so that the first connector 61 can be smoothly inserted into the flexible pipe connection part 51.

[0096] Unlike Embodiment 1 described above, in Embodiment 2, the annular buckle 32 may only include an annular protrusion, i.e., without an annular groove 322. Correspondingly, the first limiting part 33 is constructed as an annular step 332 provided on the inner wall of the flexible pipe connection part 51, such as... Figure 9 , Figure 10 and Figure 11 As shown, when the first connector 61 is inserted into the flexible pipe connection part 51, the annular buckle 32 can abut against the annular step 332, thereby playing an axial limiting role in the connection between the bend connector 5 and the flexible pipe connector 6.

[0097] During disassembly and assembly, the second joint 62 of the flexible pipe joint 6 is subjected to a tensile or pushing force along its axial direction, and the annular buckle 32 is subjected to a portion of the force perpendicular to the axial direction decomposed by the inclined plane. The annular buckle 32 undergoes a deformation that shrinks towards the axis, allowing it to cross the annular step 332, thereby realizing the process of free disassembly and assembly of the bent pipe joint 5 and the flexible pipe joint 6.

[0098] Furthermore, such as Figure 8 and Figure 10 As shown, in this embodiment 2, the flexible pipe connection part 51 of the bend joint 5 is provided with a bend joint limiting boss 54, and the flexible pipe joint 6 is provided with a flexible pipe joint limiting boss 65 located between the first joint 61 and the second joint 62. When the flexible pipe connection part 51 of the bend joint 5 is inserted into the first joint 61, and the annular buckle 32 can abut against the annular step 332, the flexible pipe joint limiting boss 65 on the first joint 61 abuts against the bend joint limiting boss 54 on the flexible pipe connection part 51, thereby playing an axial limiting role in the connection between the bend joint 5 and the flexible pipe joint 6.

[0099] like Figure 8As shown, an anti-slip part 622 may also be provided on the outer wall of the first connector 61 and / or the second connector 62. It may be a plurality of strip-shaped protrusions arranged in sequence or a plurality of dot-shaped protrusions distributed in an array, etc., which is used to increase the friction when the bend connector 5 and the flexible pipe connector 6 are connected or separated.

[0100] In this embodiment 2, the first connector 61 and / or the second connector 62 can also be made of flexible silicone material, or they can be made of rigid material with a certain deformation capability.

[0101] The similarities between this embodiment 2 and the above embodiment 1 will not be repeated.

[0102] Example 3

[0103] Based on the above embodiment 1, this embodiment 3 provides a modified embodiment.

[0104] like Figure 12 and Figure 13 As shown, the bend connector 5 includes a bend body 52 and flexible pipe connection parts 51 and mask connection parts 53 respectively disposed on both sides of the bend body 52. ​​That is, the bend connector 5 can adopt a structural form similar to that of Embodiment 1 above.

[0105] like Figure 13 As shown in this embodiment 3, the flexible pipe joint 6 can be an integral structure, which can be constructed integrally with the flexible pipe 7.

[0106] In this embodiment 3, the deformable part 3 includes an opening groove 31 and an opening groove mating part 34, one of which is disposed on the flexible pipe connection part 51 of the bend joint 5, and the other is disposed on the flexible pipe joint 6. Figure 13 As shown, the opening groove 31 can be provided on the outer wall of the flexible pipe joint 6 and extend along the axial direction of the flexible pipe joint 6. The opening groove mating part 34 is provided on the outer wall of the flexible pipe connection part 51 of the elbow joint 5, and it can also extend along the axial direction of the elbow joint 5.

[0107] The slotted fitting part 34 can have the same structural shape as the slotted opening 31. Therefore, when the flexible pipe connection part 51 of the elbow joint 5 is inserted into the flexible pipe joint 6, the slotted fitting part 34 can be inserted into the slotted opening 31. The slotted fitting part 34 is configured to be able to fit and connect with the slotted opening 31, and to cause the slotted opening 31 to expand under force when it is fitted or separated from the slotted opening 31.

[0108] like Figure 13 , Figure 14 and Figure 15As shown, the opening groove 31 includes a receiving groove 311 and a first groove 312 disposed on the inner wall of the receiving groove 311. The first groove 312 is a recessed portion on the inner wall of the receiving groove 311. The first groove 312 may be a recessed portion formed by recessing into two opposite inner sidewalls of the receiving groove 311 in a direction away from each other. The presence of the first groove 312 increases the space occupied by the receiving groove 311 in the circumferential direction of the flexible pipe connector 6. Correspondingly, the opening groove mating part 34 includes a receiving groove latch 341 and a first protrusion 342 disposed on the outer side of the receiving groove latch 341. The first protrusion 342 is a protruding portion on the outer wall of the receiving groove latch 341. The first protrusion 342 may be a protruding portion formed by protruding into two opposite outer sidewalls of the receiving groove latch 341 in a direction away from each other. The presence of the first protrusion 342 increases the space occupied by the receiving groove latch 341 in the circumferential direction of the flexible pipe connection part 51.

[0109] In other words, the portion where the first protrusion 342 is located is larger than the opening of the receiving groove 311. Therefore, when the opening groove mating part 34 is inserted into the opening groove 31, the first protrusion 342 can squeeze the opening of the receiving groove 311 to expand it outward, so that the opening groove mating part 34 can be smoothly inserted into the opening groove 31. When the receiving groove buckle 341 is located in the receiving groove 311, the first protrusion 342 is located in the first groove 312.

[0110] Therefore, during disassembly and assembly, the flexible pipe joint 6 is subjected to a tensile or pushing force along its axial direction, and the opening of the receiving groove 311 is subjected to a force perpendicular to the axis and outward from a portion of the first protrusion 342. The opening of the receiving groove 311 undergoes an outward deformation, and the opening of the receiving groove 311 can cross the first protrusion 342. The first protrusion 342 enters the first groove 312, thereby realizing the process of free disassembly and assembly of the bent pipe joint 5 and the flexible pipe joint 6.

[0111] Furthermore, such as Figure 13 As shown, the first groove 312 is an arc-shaped groove, and the first protrusion 342 is an arc-shaped protrusion. Therefore, the force required for disassembling and assembling the bend joint 5 and the flexible pipe joint 6 can be controlled by adjusting the outward protrusion height and curvature of the arc-shaped protrusion, as well as adjusting the inward recess depth and curvature of the arc-shaped groove.

[0112] like Figure 13 As shown, in this embodiment 3, a limiting boss, namely the bend joint limiting boss 54, is provided on the flexible pipe connection part 51 of the bend joint 5. When the flexible pipe connection part 51 of the bend joint 5 is inserted into the flexible pipe joint 6, and the opening groove mating part 34 is inserted into the opening groove 31, the end of the flexible pipe joint 6 abuts against the bend joint limiting boss 54, thereby providing axial limiting for the connection between the bend joint 5 and the flexible pipe joint 6.

[0113] There can be one or more opening slots 31, and multiple opening slots 31 can be arranged at equal intervals along the circumference of the flexible pipe joint 6. The number of opening slot mating parts 34 is the same as the number of opening slots 31. For example, two opening slots 31 symmetrically arranged along the axis of the flexible pipe joint 6 and two opening slot mating parts 34 symmetrically arranged along the axis of the flexible pipe connection part 51 can be provided.

[0114] like Figure 13 As shown, the flexible pipe connection part 51 has a guide end 511, which is a surface with a certain slope, so that the flexible pipe connection part 51 can be more easily inserted into the flexible pipe joint 6.

[0115] The similarities between this embodiment 3 and the above embodiment 1 will not be repeated.

[0116] Example 4

[0117] Based on the above embodiments 1 and 3, this embodiment 4 provides a modified embodiment.

[0118] Specifically, the difference between this embodiment 4 and embodiments 1 and 3 described above is that, as Figure 16 and Figure 17 As shown, the first groove 312 is a rectangular groove, and the first protrusion 342 is a rectangular protrusion. Furthermore, in this embodiment 4, the first groove 312 is a recessed portion formed by indenting in one of the inner sidewalls of the receiving groove 311. Therefore, the first groove 312 only expands the space it occupies in the circumferential direction of the flexible pipe joint 6 on one side of the receiving groove 311. Correspondingly, the first protrusion 342 is a protruding portion formed by protruding outward on the corresponding outer sidewall of the receiving groove latch 341. Therefore, the first protrusion 342 only expands the space it occupies in the circumferential direction of the flexible pipe connection portion 51 on one side of the receiving groove latch 341.

[0119] like Figure 19 As shown, when the flexible pipe connection part 51 of the elbow joint 5 is inserted into the flexible pipe joint 6, the slotted mating part 34 is inserted into the slotted opening 31, as shown. Figure 20 , Figure 21 As shown, and please refer to Figure 19 Simultaneously, by rotating the flexible pipe connector 51 and the flexible pipe joint 6 relative to each other, the first protrusion 342 can be rotated into the first groove 312, thereby engaging the bend joint 5 and the flexible pipe joint 6 together. During disassembly, by rotating the flexible pipe connector 51 and the flexible pipe joint 6 in the opposite direction, the first protrusion 342 disengages from the first groove 312, i.e., returns to its original position. Figure 21 As shown in the diagram, the bend joint 5 and the flexible joint 6 can be separated.

[0120] Furthermore, the upper side of the first protrusion 342 is also provided with a first protrusion 3421 and a first recess 3422, and the corresponding sidewall of the first groove 312 is provided with a second protrusion 3121 and a second recess 3122. When the first protrusion 342 is inserted into the first groove 312, the first protrusion 3421 and the second recess 3122 cooperate with each other, and the first recess 3422 and the second protrusion 3121 cooperate with each other.

[0121] Furthermore, an inclined guide surface is provided between the first protrusion 3421 and the first recess 3422, and a guide surface with the same inclination is provided between the second protrusion 3121 and the second recess 3122. Therefore, during the process of rotating the first protrusion 342 to insert into the first groove 312, the first recess 3422 and the second protrusion 3121 provide a certain degree of resistance to the relative rotation of the elbow joint 5 and the flexible pipe joint 6, thus preventing accidental contact during use that could cause the elbow joint 5 and the flexible pipe joint 6 to fall off. When the user needs to actively separate the connection between the elbow joint 5 and the flexible pipe joint 6, an external force is used to rotate the elbow joint 5 and the flexible pipe joint 6 relative to each other. The externally applied torque is then decomposed into a force parallel to the axial direction through the inclined guide surface, causing the first recess 3422 and the second protrusion 3121 to deform in opposite directions, allowing them to cross each other and achieving the separation of the elbow joint 5 and the flexible pipe joint 6.

[0122] like Figure 21 As shown, in this embodiment 4, a limiting boss, namely the bend joint limiting boss 54, is provided on the flexible pipe connection part 51 of the bend joint 5. When the flexible pipe connection part 51 of the bend joint 5 is inserted into the flexible pipe joint 6, and the opening groove mating part 34 is inserted into the opening groove 31, the end of the flexible pipe joint 6 abuts against the bend joint limiting boss 54, thereby providing axial limiting for the connection between the bend joint 5 and the flexible pipe joint 6.

[0123] There can be one or more opening slots 31, and the number of opening slot mating parts 34 is the same as the number of opening slots 31. For example, two opening slots 31 symmetrically arranged along the axis of the flexible pipe joint 6 and two opening slot mating parts 34 symmetrically arranged along the axis of the flexible pipe connection part 51 can be provided.

[0124] like Figure 17 As shown, the flexible pipe connection part 51 has a guide end 511, which is a surface with a certain slope, so that the flexible pipe connection part 51 can be more easily inserted into the flexible pipe joint 6.

[0125] The similarities between this embodiment 4 and the above embodiment 3 will not be repeated.

[0126] Example 5

[0127] Based on the above embodiment 1, this embodiment 5 provides a modified embodiment.

[0128] like Figure 22 and Figure 23 As shown, the bend connector 5 includes a bend body 52 and flexible pipe connection parts 51 and mask connection parts 53 respectively disposed on both sides of the bend body 52. ​​That is, the bend connector 5 can adopt a structural form similar to that of Embodiment 1 above.

[0129] like Figure 23 As shown in this embodiment 5, the flexible pipe joint 6 can be an integral structure, which can be constructed integrally with the flexible pipe 7.

[0130] Unlike Embodiment 1 described above, in Embodiment 5, the deformable part 3 only includes an open groove 31, which is disposed on the flexible pipe joint 6. For example... Figure 23 As shown, the opening groove 31 can be provided on the outer wall of the flexible pipe joint 6 and extend along the axial direction of the flexible pipe joint 6. There can be one or more opening grooves 31, and multiple opening grooves 31 can be provided at equal intervals along the circumference of the flexible pipe joint 6.

[0131] Furthermore, in this embodiment 5, the detachable connection structure also includes a second limiting part 35. The second limiting part 35 includes a second groove 351 and a second protrusion 352 that are engaged and connected. The second groove 351 is located on one of the bend joint 5 and the flexible pipe joint 6, and the second protrusion 352 is located on the other of the bend joint 5 and the flexible pipe joint 6.

[0132] like Figure 23 , Figure 24 and Figure 25 As shown, the second groove 351 is located on the inner wall of the flexible pipe joint 6, and the second protrusion 352 is located on the outer wall of the elbow joint 5. When the flexible pipe connection part 51 of the elbow joint 5 is inserted into the flexible pipe joint 6, the second protrusion 352 expands and deforms the opening groove 31, so that it can be smoothly inserted into the opening groove 31 and prevents accidental dislodgement from the opening groove 31. On the other hand, it can be stuck into the second groove 351, thereby playing a role in axial positioning.

[0133] The second protrusion 352 has a sloped guide surface, and the second groove 351 has a guide surface with the same slope. During disassembly and assembly, the flexible pipe joint 6 is subjected to a tensile or pushing force along its axial direction, and the opening groove 31 undergoes an outward expansion deformation, causing the second protrusion 352 to cross the opening of the opening groove 31 and be inserted into the second groove 351, thereby realizing the free disassembly and assembly of the bent pipe joint 5 and the flexible pipe joint 6.

[0134] like Figure 23 and Figure 24As shown, in this embodiment 4, a limiting boss, namely the bend joint limiting boss 54, is provided on the flexible pipe connection part 51 of the bend joint 5. When the flexible pipe connection part 51 of the bend joint 5 is inserted into the flexible pipe joint 6, and the opening groove mating part 34 is inserted into the opening groove 31, the end of the flexible pipe joint 6 abuts against the bend joint limiting boss 54, thereby providing axial limiting for the connection between the bend joint 5 and the flexible pipe joint 6.

[0135] like Figure 23 As shown, the flexible pipe connection part 51 has a guide end 511, which is a surface with a certain slope, so that the flexible pipe connection part 51 can be more easily inserted into the flexible pipe joint 6.

[0136] The similarities between this embodiment 5 and the above embodiment 1 will not be repeated.

[0137] Example 6

[0138] Based on the above embodiment 1, this embodiment 6 provides a modified embodiment.

[0139] like Figure 26 and Figure 27 As shown, the bend connector 5 includes a bend body 52 and flexible pipe connection parts 51 and mask connection parts 53 respectively disposed on both sides of the bend body 52. ​​That is, the bend connector 5 can adopt a structural form similar to that of Embodiment 1 above.

[0140] like Figure 27 As shown in this embodiment 6, the flexible pipe joint 6 can be an integral structure, which can be constructed integrally with the flexible pipe 7.

[0141] Unlike Embodiment 1 described above, in Embodiment 6, the detachable connection structure includes a threaded portion 4. For example... Figure 28 As shown, the threaded part 4 includes a first threaded part 41 located on the outer wall of the flexible pipe connection part 51 of the elbow joint 5 and a second threaded part 42 located on the flexible pipe joint 6. When connecting the elbow joint 5 and the flexible pipe joint 6, the elbow joint 5 can be screwed into the flexible pipe joint 6, and the first threaded part 41 and the second threaded part 42 can be engaged to connect the elbow joint 5 and the flexible pipe joint 6. Conversely, when separating the elbow joint 5 and the flexible pipe joint 6, they can be separated by rotating in the opposite direction.

[0142] The similarities between this embodiment 6 and the above embodiment 1 will not be repeated.

[0143] Example 7

[0144] Based on embodiments 1-6 above, this utility model also provides a breathing mask, including a mask body and the aforementioned curved tube assembly, wherein the curved tube connector 5 of the curved tube assembly is connected to the mask body. The curved tube connector 5 of the curved tube assembly and the mask body can be connected in various ways, such as fixed connection, rotational connection, or detachable connection. The mask body can adopt various structural forms known in the prior art.

[0145] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A bent tube assembly, characterized in that, The elbow joint is connected with the breathing mask on the side away from the flexible joint, and the flexible joint is connected with one end of the air inlet pipeline on the side away from the elbow joint, and the other end of the air inlet pipeline is connected with the gas generator; One or both of the elbow joint and the flexible joint is provided with a detachable connection structure, and the elbow joint and the flexible joint are connected through the detachable connection structure; The detachable connection structure comprises a deformable part or a threaded part, and the deformable part is configured to deform when subjected to force, thereby allowing the elbow joint and the flexible joint to be connected or separated from each other.

2. The elbow assembly of claim 1, wherein, The flexible joint is made of flexible silica gel material or rigid material with deformation ability.

3. The elbow assembly of claim 2, wherein, The deformable part comprises an open slot provided on the elbow joint or the flexible joint, which can contract or expand when subjected to force, thereby allowing the elbow joint and the flexible joint to be connected or separated from each other.

4. The tube bending assembly of claim 3, wherein, The deformable part further comprises a ring-shaped buckle, and the ring-shaped buckle and the open slot are both provided on the outer wall of the elbow joint or both provided on the outer wall of the flexible joint, and the open slot penetrates through the ring-shaped buckle.

5. The tube bending assembly of claim 4, wherein, The detachable connection structure further comprises a first limiting part provided on the inner wall of the elbow joint or the inner wall of the flexible joint, and the first limiting part is used for cooperating with the ring-shaped buckle.

6. The tube bending assembly of claim 2, wherein, The deformable part comprises an open slot and an open slot cooperating part, the open slot is provided on one of the elbow joint and the flexible joint, the open slot cooperating part is provided on the other one of the elbow joint and the flexible joint, the open slot cooperating part is configured to cooperate with the open slot, and the open slot expands when cooperating or separating with the open slot.

7. The tube bending assembly of claim 6, wherein, The open slot comprises a receiving groove and a first groove provided on the inner wall of the receiving groove, and the open slot cooperating part comprises a receiving groove buckle and a first protrusion provided on the outside of the receiving groove buckle, and the open slot cooperating part is configured such that when the receiving groove buckle is located in the receiving groove, the first protrusion is located in the first groove.

8. The tube bending assembly of claim 7, wherein, The first groove is an arc-shaped groove or a rectangular groove, and the first protrusion is an arc-shaped protrusion or a rectangular protrusion.

9. The elbow assembly of any one of claims 2-8, wherein, The detachable connection structure further comprises a second limiting part, and the second limiting part comprises a second groove and a second protrusion cooperatingly connected, the second groove is located on one of the elbow joint and the flexible joint, and the second protrusion is located on the other one of the elbow joint and the flexible joint.

10. The elbow assembly of any one of claims 2-8, wherein, The flexible joint comprises a first joint and a second joint, the first joint and the second joint are connected by insertion, the side of the first joint away from the second joint is used for connecting with the elbow joint, and the side of the second joint away from the first joint is used for connecting with the flexible tube.

11. The tube bending assembly of claim 10, wherein, One of the first joint and the second joint is provided with a connecting hole, and the other of the first joint and the second joint is provided with a third protrusion capable of being inserted into the connecting hole.

12. The elbow assembly of any one of claims 2-8, wherein, One or both of the elbow joint and the flexible pipe joint is provided with a limiting boss, the limiting boss on the elbow joint is capable of abutting against the end of the flexible pipe joint or the limiting boss on the flexible pipe joint; the limiting boss on the flexible pipe joint is capable of abutting against the end of the elbow joint or the limiting boss on the elbow joint.

13. The elbow assembly of any one of claims 3-8, wherein, The number of the open slots is one or more.

14. A respiratory mask characterized by, A face mask assembly comprising a face mask body and an elbow assembly according to any one of claims 1-13, the elbow assembly being connected with the face mask body.

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