Sealing element and joint applying same
By designing sealing components and injection-molded rings with multi-stage sealing structures, the problem of loose connection between the heated breathing pipeline connector and the mechanical ventilation equipment was solved, achieving airflow stability and equipment safety.
Patent Information
- Application Number
- CN202422893557.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Loose connections between the heated breathing tubing and the mechanical ventilation equipment can lead to unstable airflow, large pressure fluctuations, and an increased risk of equipment damage.
Design a sealing element, including a first sealing part and a second sealing part, combined with an injection-molded ring, to achieve sealing through interference fit and multi-stage limiting structure, ensuring stable connection between the connector and the ventilator tubing.
This achieves a tight connection between the heated breathing tubing and the mechanical ventilation equipment, ensuring airflow stability and reducing the risk of equipment damage.
Smart Images
Figure CN223682896U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical equipment field especially, relate to a sealing element and application joint of this sealing element. BACKGROUND
[0002] The heating breathing pipeline is a special pipeline used in the medical field, especially in the respiratory treatment. For the patient who needs mechanical ventilation, one end of the heating breathing pipeline can be connected with the mechanical ventilation equipment, and the other end is connected with the patient's oral-nasal mask and makes the mechanical ventilation equipment deliver gas to the patient. The heating breathing pipeline usually has a built-in heating element to heat the gas in the breathing pipeline, so that it is kept in a relatively stable range, preventing the condensation of water vapor in the pipeline due to too low temperature, and improving the comfort of the patient.
[0003] At present, due to the loose connection between the heating breathing pipeline joint and the mechanical ventilation equipment, the pressure range at the patient end is less than the predetermined pressure range, thereby causing the pressure change, and the airflow at this time is unstable, which is difficult to achieve the treatment effect by pressure compensation, and increases the risk of equipment damage. SUMMARY
[0004] The utility model aims at providing a sealing element and application joint of this sealing element to solve the problem of loose connection between the pipeline joint and the mechanical ventilation equipment in the prior art.
[0005] The technical scheme of the utility model is: a sealing element, comprising a first sealing part and a second sealing part in the form of a ring;
[0006] The radial cross-section of the first sealing part is arc-shaped, and forms an opening towards the axis of the first sealing part, the first sealing part comprises a sealing sheet and a support end, and in the assembled state, the sealing sheet is deformed under stress to reduce the opening;
[0007] The second sealing part is connected with the support end and has an interference end face for interference sealing, the interference end face is in the form of a continuous plane.
[0008] Preferably, the first sealing part is integrally formed with a third sealing part at one end away from the second sealing part, the middle part of the third sealing part is in the form of a closed opening, and the inner wall has a sharp end for assembly abutting.
[0009] Preferably, the second sealing part is connected with an injection molding ring, and the second sealing part and the injection molding ring cooperate to form a first axial limiting structure and a first rotation limiting structure.
[0010] Preferably, the first axial limiting structure comprises at least two groups of abutting stepped surfaces formed between the second sealing part and the injection molding ring.
[0011] The first rotation limiting structure comprises an embedded block and an embedded slot formed between the second sealing part and the injection molding ring.
[0012] A joint comprises the sealing part, a first pipe joint part, and a power supply joint installed on the first pipe joint part.
[0013] The inner wall of the first pipe joint part has an assembly surface abutting the interference end surface; after the injection molding ring is clamped with the first pipe joint part, the interference end surface and the assembly surface realize interference fit.
[0014] Preferably, the first pipe joint part and the injection molding ring form a second axial limiting structure and a second rotation limiting structure in cooperation;
[0015] The second axial limiting structure comprises a first tooth surface formed between the inner wall of the first pipe joint part and the outer wall of the injection molding ring in cooperation;
[0016] The second rotation limiting structure comprises a first limiting block and a first limiting slot formed between the first pipe joint part and the injection molding ring.
[0017] Preferably, the end surface of the first limiting block and the first limiting slot in cooperation is wavy, so that the width of the first limiting block increases along the insertion direction of the injection molding ring, realizing blind insertion of the injection molding ring.
[0018] Preferably, the first pipe joint part is configured with a ridge, and the power supply joint is installed on the ridge, comprising a wiring end embedded in the ridge and a plug-in end protruding from the ridge; a clasp is arranged on the wiring end to cooperate with the first pipe joint part.
[0019] Preferably, the starting end of the first pipe joint part along the insertion direction of the sealing part is configured as a female end, and has a clamping tongue cooperating with a male end.
[0020] Preferably, the end of the first pipe joint part along the insertion direction of the sealing part is also connected with a second pipe joint part.
[0021] The second pipe joint part and the first pipe joint part form a third axial limiting structure and a third rotation limiting structure in cooperation.
[0022] Preferably, the third axial limiting structure comprises a second tooth surface formed between the outer wall of the first pipe joint part and the inner wall of the second pipe joint part in cooperation;
[0023] The third rotation limiting structure comprises a second limiting block and a second limiting slot formed between the first pipe joint part and the second pipe joint part.
[0024] Preferably, the first pipe joint piece and the second pipe joint piece are further provided with a rubber sleeve outside.
[0025] Preferably, the outer wall of the first pipe joint piece and / or the second pipe joint piece is provided with a plurality of cross-distributed ribs, and the inner wall of the rubber sleeve is provided with a plurality of raised ribs embedded between adjacent ribs.
[0026] Preferably, the rubber sleeve is provided with a pair of mounting grooves arranged on both sides of the ridge, and a buckle is embedded in the mounting groove, and the buckle is fixedly connected with the first pipe joint piece.
[0027] Preferably, the first pipe joint piece is provided with a first buckling part at a position opposite to the mounting groove, the buckle is provided with a second buckling part, and the first buckling part and the second buckling part are connected and fixed through plug-in connection.
[0028] Compared with the prior art, the utility model has the advantages that:
[0029] (1) The joint disclosed in the application is mainly used for realizing the connection of a heating breathing pipeline and a breathing machine, the sealing element arranged in the joint is used for realizing multi-stage sealing, the sealing sheet is arranged in the first sealing part and is used for sealing the pipeline in one stage, after the breathing machine pipeline is inserted, the sealing sheet is deformed under force and can be tightly abutted with the outer wall of the breathing machine pipeline, and the interference end face of the second sealing part is used for realizing two-stage sealing in the assembled state and realizing the interference fit with the first pipe joint piece. Through the arrangement of the sealing element, the sealing element can realize the assembly sealing and the sealing between the breathing machine pipeline, and the stability of the air flow is ensured.
[0030] (2) The sealing element can be further provided with a third sealing part, the middle part of the third sealing part is in a tapered shape, the inner wall is provided with a sharp end for abutting with the outer wall of the breathing machine pipeline, thereby realizing three-stage sealing and ensuring the tightness of the connection between the ventilation equipment.
[0031] (3) The sealing element and the injection molding ring are combined and formed, the efficient and rapid assembly of the sealing element is facilitated, and in the whole combination and installation process of the joint, the axial limit and the rotation limit are arranged between the sealing element and the injection molding ring, between the injection molding ring and the first pipe joint, between the first pipe joint and the second pipe joint, and between the first pipe joint and / or the second pipe joint and the rubber sleeve, and the structure has good stability. BRIEF DESCRIPTION OF DRAWINGS
[0032] The utility model will be further described in connection with the drawings and examples:
[0033] Figure 1 The utility model discloses the sealing element sectional view;
[0034] Figure 2The utility model discloses a sealing element sectional view.
[0035] Figure 3 The utility model discloses sealing element and injection molding ring's explosion map.
[0036] Figure 4 The utility model discloses joint's explosion map.
[0037] Figure 5 The utility model discloses sealing element and first pipeline joint piece assembly schematic view.
[0038] Figure 6 The utility model discloses sealing element and first pipeline joint piece assembly schematic view.
[0039] Figure 7 The utility model discloses first pipeline joint piece structure diagram.
[0040] Figure 8 The utility model discloses first pipeline joint piece and second pipeline joint piece explosion map.
[0041] Figure 9 The utility model discloses rubber sleeve structure diagram.
[0042] Figure 10 The utility model discloses joint structure diagram.
[0043] Among them:
[0044] 1, sealing element,
[0045] 11, first sealing part, 111, sealing sheet, 112, support end, 113, opening, 12, second sealing part, 121, interference end face, 13, third sealing part, 131, tip, 14, first axial limit structure, 141, step surface, 15, first rotation limit structure, 151, embedded block, 152, embedded groove, 16, second axial limit structure, 161, first tooth surface, 17, second rotation limit structure, 171, first limit block, 172, first limit groove, 18, third axial limit structure, 181, second tooth surface, 19, third rotation limit structure, 191, second limit block, 192, second limit groove,
[0046] 2, injection molding ring,
[0047] 3, first pipeline joint piece, 30, clamping tongue, 31, assembly surface, 32, ridge, 33, buckle,
[0048] 4, second pipeline joint piece, 41, rib,
[0049] 5, rubber sleeve, 51, convex rib, 52, installation groove, 53, buckle, 54, first buckling part, 55, second buckling part.
[0050] 6, power connection, 61, terminal, 62, plug end. DETAILED DESCRIPTION
[0051] The content of the utility model will be further described in detail below in combination with specific embodiments:
[0052] In order to facilitate understanding, first of all, the application scenario of the present application is described, in the field of heating breathing machine pipeline, the connection of heating breathing pipeline and breathing machine needs to be realized through the joint, in order to guarantee the stability of airflow, the sealing performance of the joint is particularly important; the present application proposes a sealing element for the joint and a joint with the sealing element, the specific structure is mainly as follows.
[0053] As shown in Figure 1 A sealing element 1 for realizing the sealing of the joint and the breathing machine pipeline, comprising a first sealing part 11 and a second sealing part 12 arranged in a ring shape by using elastic material.
[0054] Among them, the radial cross section structure of the first sealing part 11 is arc-shaped, and forms an opening 113 towards the axis of the first sealing part 11. The first sealing part 11 includes a sealing sheet 111 and a support end 112, when assembled with the breathing machine pipeline, the sealing sheet 111 will be deformed under the action of the outer wall of the breathing machine pipeline, so that the opening 113 is reduced, and the sealing element 1 is tightly contacted with the outer wall of the breathing machine pipeline under the action of the elastic force to realize the sealing of the airflow passage.
[0055] The second sealing part 12 is connected with the support end 112 and has an interference end face 121 for realizing interference sealing, the interference end face 121 is arranged as an annular and continuous plane, the interference end face 121 is compressed after being abutted with another end face in the assembled state, so as to realize the interference fit in the assembled state.
[0056] The second sealing part 12 is also connected with an injection molding ring 2, which plays a role in facilitating the assembly of the sealing element 1. In the present embodiment, the injection molding ring 2 is connected and fixed with the second sealing part 12 by injection molding, that is, the injection molding ring 2 directly realizes the combination connection between the two during the molding process. The second sealing part 12 and the injection molding ring 2 cooperate to form a first axial limiting structure 14 and a first rotation limiting structure 15 as shown in Figure 2 The first axial limiting structure 14 and the first rotation limiting structure 15 are respectively used to realize the axial limiting and rotation limiting between the sealing element 1 and the injection molding ring 2.
[0057] The first axial limiting structure 14 includes two groups of abutting step faces 141 formed between the second sealing part 12 and the injection molding ring 2. In combination with Figure 1 and Figure 3As shown, the first rotation limiting structure 15 includes an embedded block 151 and an embedded groove 152 formed between the second sealing part 12 and the injection molding ring 2. The embedded block 151 and the embedded groove 152 are respectively arranged on the second sealing part 12 and the injection molding ring 2.
[0058] As a further optimization, the first sealing part 11 is integrally formed with a third sealing part 13 at one end away from the second sealing part 12. The middle part of the third sealing part 13 is tapered, and the inner wall has a sharp end 131 for abutting against the outer wall of the pipeline. In this way, a matching seal between the first sealing part 11 and the breathing machine pipeline is added, thereby achieving better sealing effect between the breathing machine pipeline.
[0059] Based on the arrangement of the sealing element 1, as shown in Figure 4 and 5 The application further discloses a connector, which comprises the sealing element 1, a first pipeline connector 3, and a power connector 6 mounted on the first pipeline connector 3.
[0060] The injection molding ring 2 is clamped with the first pipeline connector 3. The inner wall of the first pipeline connector 3 has an assembly surface 31. When the injection molding ring 2 is clamped with the first pipeline connector 3, the clamping structure will exert a force on the injection molding ring 2 in the insertion direction, and the interference end surface 121 on the sealing element 1 will be tightly abutted against the assembly surface 31 through the force, thereby realizing interference fit and achieving sealing between the sealing element 1 and the first pipeline connector 3.
[0061] The clamping mode of the injection molding ring 2 and the first pipeline connector 3 is as follows:
[0062] The first pipeline connector 3 and the injection molding ring 2 cooperatively form a second axial limiting structure 16 and a second rotation limiting structure 17.
[0063] As shown in Figure 6 The second axial limiting structure 16 includes a first tooth surface 161 formed on the inner wall of the first pipeline connector 3 and cooperatively arranged with the outer wall of the injection molding ring 2. The first pipeline connector 3 and the injection molding ring 2 are engaged and clamped through the first tooth surface 161, thereby limiting the axial displacement of the two.
[0064] The second rotation limiting structure 17 includes a first limiting groove 172 formed on the first pipeline connector 3 and a first limiting block 171 formed on the injection molding ring 2. The first limiting groove 172 and the first limiting block 171 are cooperatively arranged with the clamping of the first pipeline connector 3 and the injection molding ring 2, and the end surfaces of the cooperation are arranged in a wave shape, so that the width of the first limiting block 171 increases along the insertion direction of the injection molding ring 2, thereby playing a guiding role and achieving the effect that the injection molding ring 2 is blindly inserted into the first pipeline connector 3.
[0065] As shown in Figure 7 and8 As shown, the outer side of the first tubing connector 3 has a protruding ridge 32, which provides space for the installation of the power connector 6. The power connector 6 includes a terminal 61 embedded in the ridge 32 and a plug-in end 62 protruding from the ridge 32. The terminal 61 is covered with a latch 33 that snaps onto the first tubing connector 3. The terminal 61 provides electrical connection to the heating wire laid within the tubing, and the plug-in end 62, which is electrically connected to the ventilator, provides power to the heating wire to heat the gas within the tubing. Figure 5 As shown, the first tubing connector 3 is constructed as a female end at the starting end along the insertion direction of the seal 1, and is provided with a latch 30 that can engage with the male end on the ventilator.
[0066] like Figure 8 As shown, the first pipe connector 3 is connected to a second pipe connector 4 at its end along the insertion direction of the seal 1. The second pipe connector 4 connects and fixes the first pipe connector 3 to the pipe by injection molding. The second pipe connector 4 and the first pipe connector 3 cooperate to form a third axial limiting structure 18 and a third rotation limiting structure 19, which are used for axial limiting of the second pipe connector 4 and the first pipe connector 3 and rotation limiting around their own axes, respectively.
[0067] Specifically, the third axial limiting structure 18 includes a second toothed surface 181 that mates between the outer wall of the first pipe connector 3 and the inner wall of the second pipe connector 4. The third rotation limiting structure 19 includes a second limiting block 191 formed on the first pipe connector 3, and a second limiting groove 192 formed on the second pipe connector 4 during injection molding, which mates with the second limiting block 191.
[0068] like Figure 4 and 9 As shown, a rubber sleeve 5 is also provided, which is formed on the outside of the first pipe connector 3 and the second pipe connector 4 by injection molding.
[0069] To ensure a more secure connection between the rubber sleeve 5 and the first pipe connector 3 and the second pipe connector 4, in this embodiment, multiple intersecting ribs 41 are provided on the outer walls of the first pipe connector 3 and the second pipe connector 4. During the injection molding process, the rubber sleeve 5 forms corresponding protruding ribs 51 that are embedded between adjacent ribs 41. The protruding ribs 51 cooperate with the intersecting ribs 41 to limit the axial displacement of the rubber sleeve 5 relative to the first pipe connector 3 and the second pipe connector 4, as well as its rotation around its own axis.
[0070] like Figure 9 - Figure 10As shown, the encapsulating sleeve 5 is provided with a mounting groove 52 on both sides of the ridge 32, and a buckle 53 is embedded in the mounting groove 52, the inner side of the buckle 53 is provided with a second buckling part 55, the first pipeline joint part 3 is provided with a first buckling part 54 at the position corresponding to the mounting groove 52, and the second buckling part 55 is connected with the first buckling part 54 in plug-in connection, so as to fix and connect the buckle 53 with the first pipeline joint part 3. So that the operator can press the buckle 53 to drive the card tongue 30 on the first pipeline joint part 3 to shrink inward, so that the joint is separated from the male end on the breathing machine.
[0071] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application, therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.
Claims
1. A seal, characterized in that, The first sealing part (11) and the second sealing part (12) are annular; The first sealing part (11) is arc-shaped in radial cross-section and has an opening (113) facing the axis of the first sealing part (11), and the first sealing part (11) comprises a sealing sheet (111) and a supporting end (112), and the sealing sheet (111) is deformed under force to reduce the opening (113) in the assembled state; The second sealing part (12) is connected with the supporting end (112) and has an interference end face (121) for interference sealing, and the interference end face (121) is annular and continuous.
2. A seal as claimed in claim 1, wherein The third sealing part (13) is integrally formed at one end of the first sealing part (11) away from the second sealing part (12), and the middle part of the third sealing part (13) is tapered, and the inner wall has a sharp end (131) for assembly abutment.
3. A seal as claimed in claim 2, wherein The second sealing part (12) is connected with the injection molding ring (2), and the second sealing part (12) and the injection molding ring (2) cooperate to form a first axial limiting structure (14) and a first rotation limiting structure (15).
4. A seal as claimed in claim 3, wherein The first axial limiting structure (14) comprises at least two groups of abutting stepped surfaces (141) formed between the second sealing part (12) and the injection molding ring (2); The first rotation limiting structure (15) comprises an embedding block (151) and an embedding groove (152) formed between the second sealing part (12) and the injection molding ring (2); the embedding block (151) and the embedding groove (152) are arranged on the second sealing part (12) and the injection molding ring (2) respectively.
5. A joint, characterized by The sealing element (1) according to any one of claims 3-4, a first pipeline joint element (3), and a power connector (6) mounted on the first pipeline joint element (3); The inner wall of the first pipeline joint element (3) has an assembly surface (31) abutting against the interference end face (121); after the injection molding ring (2) is clamped with the first pipeline joint element (3), the interference end face (121) and the assembly surface (31) are interference-fitted.
6. A fitting according to claim 5, wherein The first pipeline joint element (3) and the injection molding ring (2) cooperate to form a second axial limiting structure (16) and a second rotation limiting structure (17); The second axial limiting structure (16) comprises a first tooth surface (161) formed between the inner wall of the first pipeline joint element (3) and the outer wall of the injection molding ring (2); The second rotation limiting structure (17) comprises a first limiting block (171) and a first limiting groove (172) formed between the first pipeline joint element (3) and the injection molding ring (2).
7. A fitting according to claim 6, wherein The end surfaces of the first limiting block (171) and the first limiting groove (172) cooperating with each other are wavy, so that the width of the first limiting block (171) increases along the insertion direction of the injection molding ring (2), and blind insertion of the injection molding ring (2) is realized.
8. A fitting according to claim 5, wherein The first pipe joint piece (3) is configured with a ridge (32), the power connector (6) is installed on the ridge (32), and the power connector (6) comprises a terminal (61) embedded in the ridge (32) and a plug end (62) protruding from the ridge (32); the terminal (61) is provided with a buckle (33) matched with the first pipe joint piece (3).
9. A fitting according to claim 5, wherein The first pipe joint piece (3) is configured as a female end at the starting end in the insertion direction of the sealing element (1), and has a latch (30) matched with a male end.
10. A fitting according to claim 8, wherein The first pipe joint piece (3) is further connected with a second pipe joint piece (4) at the end in the insertion direction of the sealing element (1). The second pipe joint piece (4) and the first pipe joint piece (3) are matched to form a third axial limiting structure (18) and a third rotation limiting structure (19).
11. A fitting according to claim 10, wherein The third axial limiting structure (18) comprises a second tooth surface (181) formed between the outer wall of the first pipe joint piece (3) and the inner wall of the second pipe joint piece (4). The third rotation limiting structure (19) comprises a second limiting block (191) and a second limiting groove (192) formed between the first pipe joint piece (3) and the second pipe joint piece (4).
12. A fitting according to claim 10, wherein The first pipe joint piece (3) and the second pipe joint piece (4) are further provided with an encapsulation sleeve (5) on the outer side.
13. A fitting according to claim 12, wherein The outer wall of the first pipe joint piece (3) and / or the second pipe joint piece (4) has a plurality of cross-distributed ribs (41), and the inner wall of the encapsulation sleeve (5) has a plurality of protruding ribs (51) embedded between adjacent ribs.
14. A fitting according to claim 12, wherein The encapsulation sleeve (5) has a pair of mounting grooves (52) on the outer wall, the mounting grooves (52) are arranged on both sides of the ridge (32), and the mounting grooves (52) are embedded with buckles (53).
15. A fitting according to claim 14, wherein The first pipe joint piece (3) has a first buckling part (54) at a position opposite to the mounting groove (52), the buckle (53) has a second buckling part (55), and the first buckling part (54) and the second buckling part (55) are connected and fixed by plug-in connection.