Quick-connect structure and breathing device

Abstract

This application discloses a quick-connect structure and a breathing device. The quick-connect structure includes a first component and a second component that are interlocked. The first component includes a connector with a locking part, and the connector has a head and a root. The second component includes a base and an attachment part disposed opposite the base, forming a through-hole connector channel between the attachment part and the base. The connector has a first position near the base that allows the head to pass through the connector channel, and a second position near the attachment part that causes the locking part to interfere with the attachment part, thus restricting its exit from the connector channel. The head is also rotatably connected to a retaining member, which has a first posture that allows the head to pass through the connector channel and a second posture that abuts against the base to hold the connector in the second position. The technical solution disclosed in this application achieves quick separation and stable connection between the first and second components through their cooperation, improving the user experience while ensuring connection effectiveness.

Description

Technical Field

[0001] This application relates to the field of protective equipment, and in particular to quick-connect structures and breathing apparatus. Background Technology

[0002] In harsh working environments such as welding sites, people need to be equipped with protective equipment to reduce work-related injuries. For example, in work sites where there are harmful gases or dust, breathing filters or fresh air delivery devices are required.

[0003] For example, Chinese patent document CN213346318U discloses an electrically powered air-supplying welding mask. The mask body has an air supply channel and an air storage cavity connected to the air supply channel. The air inlet of the air supply channel is connected to an electric air supply mechanism, and the air outlet of the air storage cavity is equipped with a silicone dust mask. The electric air supply mechanism includes a portable housing, a blower and a power supply, as well as a filter component installed on the outside of the portable housing and connected to the blower. The air inlet of the air supply channel is equipped with an air inlet pipe, and the portable housing is equipped with an air supply pipe. The air supply pipe and the air inlet pipe are connected by an air supply pipe. The mask body is provided with a flip-up protective cover.

[0004] The inventors discovered that existing respirators (such as the electric air delivery mechanism in the prior art) are not easy to wear and connect with other devices, and the overall respirator has poor adaptability in complex working conditions, leaving room for improvement. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application discloses a quick-connect structure, including a first component and a second component that are plugged into each other. The first component includes a plug body with a locking part, and the plug body has opposing heads and roots.

[0006] The second component includes a base and an attachment portion disposed opposite the base, wherein an insertion channel is formed between the attachment portion and the base, the insertion body having a first position near the base such that the head can pass through the insertion channel, and a second position near the attachment portion such that the stop portion interferes with the attachment portion and restricts its exit from the insertion channel.

[0007] The head is also rotatably connected to a retainer, the retainer having a first posture that allows the head to pass through the insertion channel and a second posture that abuts against the base to hold the insertion body in a second position.

[0008] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0009] In one embodiment, in the direction of movement of the connector into the connector channel, the base includes a first guide surface and a second guide surface that are smoothly transitioned, the second guide surface being inclined relative to the first guide surface and driving the connector into the second position.

[0010] In one embodiment, the second guide surface drives the retainer into the second posture; or

[0011] The retaining member is driven by an external force to enter the first posture or the second posture.

[0012] In one embodiment, in the insertion direction, the attachment portion has an open side edge, and when the plug body is in the second position, at least a portion of the stop portion and / or the retainer extends to the open side edge of the attachment portion to restrict the plug body from exiting the insertion channel.

[0013] In one embodiment, the retainer is an integral structure including a retaining portion and rotating shafts disposed on both sides of the retaining portion. The retaining portion is rotatably engaged with the head via the rotating shafts. The outer peripheral surface of the retaining portion includes:

[0014] The sliding surface, in the first posture, is capable of sliding along the base;

[0015] In the second posture, the operating surface is exposed on the outside of the insertion channel;

[0016] The locking surface abuts against the side edge of the attachment portion when the plug body is in the second position and in the second posture.

[0017] The positioning surface, when the plug body is in the second position and in the second posture, abuts against the bottom surface of the attachment portion and prevents the retainer from entering the first posture;

[0018] The support surface, when in the second posture and the plug body is in the second position, abuts against the base to hold the plug body in the second position.

[0019] In one embodiment, the rotating shaft is provided with a positioning protrusion in the radial direction, and the plug body is provided with a constraint hole for rotating with the rotating shaft and a positioning groove provided on one side of the constraint hole. The positioning protrusion cooperates with the positioning groove to determine the first posture.

[0020] In one embodiment, the plug body has a support portion on the side facing the base. During the process of the plug body moving from the first position to the second position, the support portion always abuts against the base and provides a fulcrum. The plug body swings around the fulcrum as the rotation center.

[0021] In one embodiment, the root portion is provided with a limiting portion facing the head, and during the process of the plug body moving from the first position to the second position, the limiting portion cooperates with the base portion and / or the attachment portion to limit the insertion depth of the plug body relative to the plugging channel.

[0022] This application also discloses a breathing device, including a mask, a body, a restraint strap, and the quick-connect structure described in the above technical solution. One of the body and the restraint strap is connected to the first component, and the other is connected to the second component. The body contains a fan assembly and a filter assembly for supplying air to the mask.

[0023] In one embodiment, the second component is connected to both sides of the housing of the main body, and the two ends of the constraint band are respectively hinged to the corresponding first component. The root of the first component is provided with an open hinge groove, and the constraint band is provided with a hinge shaft that cooperates with the hinge groove.

[0024] The technical solution disclosed in this application achieves rapid separation and stable connection of the two components through the cooperation of the first and second components, thereby improving the user experience while ensuring the connection effect.

[0025] The specific beneficial technical effects will be further explained in the specific implementation methods in conjunction with specific structures or steps. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the breathing device structure in one embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the quick-connect structure in one embodiment of this application;

[0028] Figure 3 for Figure 2 Another perspective view of the quick-connect structure;

[0029] Figure 4 for Figure 3 A schematic diagram showing the engagement of the retainer and the first component in the quick-connect structure.

[0030] Figure 5 for Figure 1 A top-down view of the breathing apparatus in the diagram;

[0031] Figure 6 for Figure 5 A partially enlarged cross-sectional view of the breathing device AA in the diagram;

[0032] Figure 7 for Figure 5 A partially enlarged cross-sectional view of the breathing device at point BB;

[0033] Figure 8 This is an enlarged cross-sectional view of the retainer in one embodiment of this application;

[0034] Figures 9 to 12 A schematic diagram of the phased cooperation process of the first component and the second component in one embodiment of this application.

[0035] The annotations in the figure are explained as follows:

[0036] 110. Connector; 111. Head; 112. Root; 120. Anti-reverse part; 130. Limiting part; 131. Clearance slope; 140. Engaging space; 150. Constraint hole; 151. Positioning groove; 160. Hinge groove; 161. Spring piece;

[0037] 210. Base; 211. First guide surface; 212. Second guide surface; 220. Attachment part; 230. Insertion channel; 240. Retaining member; 241. Retaining part; 2411. Sliding surface; 2412. Operating surface; 2413. Locking surface; 2414. Positioning surface; 2415. Supporting surface; 242. Rotating shaft; 243. Positioning protrusion;

[0038] 900, Body; 910, Connecting structure; 911, Hinge shaft. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] The quick-connect structure in this application includes a first component and a second component that are interlocked, having both a mutually positioned mating state and a mutually independent disengaged state. In the mating state, the first and second components are fixedly connected; or one of the first and second components provides a limiting space, within which the other moves to achieve the connection. For example, in one embodiment, the first component has a pivot, and the second component has a constraint groove for positioning the pivot. When the pivot is located within the constraint groove, the first and second components are connected; when the pivot is removed from the constraint groove, the first and second components are separated. As another example, the second component has a partially open insertion groove, into which the first component is inserted, connecting the first and second components. Correspondingly, a locking structure can also be provided between the first and second components to maintain their relative positions.

[0043] For detailed settings of the first component, please refer to the attached document. Figure 2 To be continued Figure 3 As shown, the first component includes a connector 110, which has opposing head 111 and root 112. In the insertion direction, the head 111 is located in front of the root 112. When the first component mates with the second component, the head 111 is located inside the second component for guidance and / or positioning and / or locking, and the root 112 is located outside the second component for connecting other components (e.g., the restraint strap or body 900 mentioned below). Furthermore, the connector 110 is plate-shaped and extends in the insertion direction and in a direction perpendicular to the insertion direction to provide a stable insertion effect. The head 111 and root 112 of the connector 110 have uniform or distinct thicknesses. Figure 7 In the connector 110, the thickness of the head 111 is less than the thickness of the root 112, and the transition between the two is smooth.

[0044] Reference Appendix Figure 2 In the illustrated embodiment, the connector 110 is provided with a locking part 120. When the connector 110 is in a preset position, the locking part 120 engages with the second component to prevent the separation of the first and second components. The locking part 120 can take various forms; for example, the locking part 120 may have a macroscopic or microscopic engaging structure and engage with the second component; or the locking part 120 may be able to change its own posture and engage with the second component. (See attached...) Figure 7In the illustrated embodiment, a locking portion 120 is disposed on the head 111 and moves with the head 111. When the head 111 of the first component moves relative to the second component, the locking portion 120 can lock and unlock with the corresponding structure. Further, the locking portion 120 is a protrusion protruding relative to the head 111, and the protrusion direction is perpendicular to the insertion direction of the connector 110. Multiple locking portions 120 are provided and spaced apart. Each locking portion 120 is flush with or arranged in a row in the insertion direction.

[0045] The retraction of the connector 110 from the insertion channel 230 is restricted by the stop portion 120. The insertion depth of the connector 110 relative to the insertion channel 230 can be limited by the shape of the insertion channel 230, or refer to the attached diagram. Figure 2 and attached Figure 3 In the illustrated embodiment, the connector 110 is provided with a limiting portion 130 facing the head 111. During the process of the connector 110 moving from a first position to a second position, the limiting portion 130 cooperates with the second component to limit the insertion depth of the connector 110 relative to the insertion channel 230. The limiting portion 130 can cooperate with the base 210 and / or the attachment portion 220 of the second component. In this embodiment, the limiting portion 130 cooperates with the opening of the insertion channel 230, i.e., with the base 210. Further, the limiting portion 130 is located near the root 112. Multiple limiting portions 130 are provided and are located on both sides of the connector 110. The limiting portion 130 protrudes from the side of the connector 110. The limiting portion 130 includes a limiting surface facing the head 111. When the connector 110 is in the second position, the limiting portion 130 abuts against the second component through the limiting surface. To prevent the limiting part 130 from interfering with the swing of the connector 110, the limiting part 130 is provided with a relief slope 131. The relief slope 131 is located on the top side of the limiting part 130, that is, the side close to the attachment part. In an embodiment where both the limiting part 130 and the stop part 120 are provided, the limiting part 130 and the stop part 120 are spaced apart and a locking space 140 is formed between them. The locking space 140 is used to cooperate with the structure of the second component for positioning the first component (such as the attachment part 220 mentioned below) to constrain the first component and the second component. Specifically, the locking space 140 is located between the relief slope 131 and the stop part 120.

[0046] For detailed settings of the second component, please refer to the attached document. Figure 2 To be continued Figure 6 As shown, the second component includes a base 210 and an attachment portion 220 disposed opposite the base 210, with an insertion channel 230 formed between the attachment portion 220 and the base 210. The insertion channel 230 allows the first component to enter or exit to achieve connection and separation of the first and second components. In this embodiment, the base 210 forms an open groove, and the attachment portion 220 closes a partial opening in the groove to form the insertion channel 230.

[0047] Reference Appendix Figure 9 In the illustrated embodiment, the base 210 includes a smoothly transitioning first guide surface 211 and a second guide surface 212. In the insertion direction, the first component contacts the first guide surface 211 first, and then the second guide surface 212, meaning the first guide surface 211 is located outside the second guide surface 212. The second guide surface 212 is inclined relative to the first guide surface 211. Furthermore, in the insertion direction, the first guide surface 211 gradually approaches the attachment portion 220.

[0048] In the appendix Figure 6 In the illustrated embodiment, the insertion channel 230 is through at both ends, allowing the first component to be inserted from one end of the insertion channel 230 to the other. When the first component is inserted into the insertion channel 230, the attachment portion 220 can engage with the first component on both sides in the insertion direction to limit the spatial position of the first component relative to the second component. (Refer to the attached figure.) Figure 5 In the illustrated embodiment, the attachment portion 220 has a plate-like structure, and the attachment portion 220 and the base portion 210 together form the insertion channel. In the insertion direction, the attachment portion has an open side edge for corresponding structural mating with the first component.

[0049] The coordination between the first and second components can be found in the appendix. Figure 6 To be continued Figure 7 and appendix Figure 9 To be continued Figure 12 As shown, the connector 110 has a first position near the base 210 such that the head 111 can pass through the connector channel 230 (e.g., attached). Figure 9 As shown), and a second position (e.g., near the attachment portion 220, causing the stop portion 120 to interfere with the attachment portion 220 and restricting its exit from the insertion channel 230). Figure 6 (As shown). In the first position, the connector 110 can slide relative to the second component within the connector channel 230 to avoid the attachment portion 220. Switching between the first and second positions of the connector 110 can be achieved by driving the connector 110, or by the cooperation of the connector 110 and the connector channel 230. For example, in conjunction with the base 210 mentioned in the above embodiment, which includes a smoothly transitioning first guide surface 211 and second guide surface 212, the second guide surface 212 drives the connector 110 into the second position.

[0050] Reference Appendix Figure 9In the illustrated embodiment, the connector 110 has a support portion on the side facing the base 210. During the process of the connector 110 moving from the first position to the second position, the support portion always abuts against the base 210 and provides a fulcrum. The connector 110 swings around the fulcrum as its rotation center. During the swinging process, the fulcrum provided by the support portion can also slide relative to the base 210, that is, the connector 110 swings while moving linearly within the connector channel 230. The support portion can make point contact with the base 210 to provide more flexible steering control, or it can be, for example, attached to... Figure 11 The diagram shows surface contact. The surface contact support provides a more stable connection for the connector 110 in the second position, preventing connection failure due to vibration. Furthermore, the side of the support near the head is curved to provide point contact, and the side of the support near the root is flat to provide surface contact. As the connector 110 moves from the first position to the second position, the fulcrum (i.e., the contact position between the support and the base 210) moves from the curved surface to the flat surface.

[0051] The interference between the retaining portion 120 and the attachment portion 220 can take various forms. For example, the retaining portion 120 and the attachment portion may adhere to each other to prevent relative movement between them; another example is that, in the above embodiment, the retaining portion 120 is a protrusion protruding relative to the head 111, and the protrusion abuts against the side edge of the attachment portion to prevent relative movement between them. In conjunction with the above-mentioned embodiment where the insertion channel 230 is through-hole at both ends, in the attachment... Figure 7 In the illustrated embodiment, at least a portion of the stop portion 120 extends to the side edge of the attachment portion 220 to restrict the insertion body 110 from exiting the insertion channel 230.

[0052] To further improve the connection stability of the first and second components, one embodiment of this application also provides a retaining member 240 for holding the connector 110 in a second position. (See attached document) Figure 2 To be continued Figure 3 In the illustrated embodiment, the head 111 is also rotatably connected to a retainer 240, the retainer 240 having a first posture that allows the head 111 to pass through the insertion channel 230 (e.g., attached). Figure 9 (as shown) and a second posture in which the connector 110 is held in the second position by abutting against the base 210 (e.g., attached) Figure 6 (As shown). In the first posture, the retainer 240 conforms to the insertion direction of the connector 110; in the second posture, the retainer 240 protrudes from the outer contour of the connector 110 and cooperates with the base 210. The switching of the retainer 240 between different postures can be achieved by external force, that is, the retainer 240 is driven into the first posture or the second posture by external force; it can also be achieved by cooperation with the insertion channel 230 during the insertion process of the connector 110, that is, the insertion channel 230 (e.g., the second guide surface 212) drives the retainer 240 into the second posture.

[0053] For the specific structure of retainer 240, please refer to the appendix. Figure 2 To be continued Figure 4 In the embodiment shown, the retainer 240 is an integral structure and includes a retaining portion 241 and rotating shafts 242 disposed on both sides of the retaining portion 241. The retaining portion 241 is rotatably engaged with the head 111 via the rotating shafts 242. Specifically, refer to the attached drawing. Figure 8 As shown, the outer peripheral surface of the retaining part 241 includes:

[0054] In the first posture, the sliding surface 2411 can slide along the base 210;

[0055] In the second posture, the operating surface 2412 is exposed on the outside of the insertion channel 230;

[0056] When the second posture is in which the plug body 110 is in the second position, the locking surface 2413 abuts against the side edge of the attachment portion 220.

[0057] Positioning surface 2414, in the second posture and when the plug body 110 is in the second position, abuts against the bottom surface of the attachment part 220 and prevents the retainer 240 from entering the first posture.

[0058] When the second posture is in which the plug body 110 is in the second position, the support surface 2415 abuts against the base 210 to hold the plug body 110 in the second position.

[0059] The retainer 240 is held in a first posture by the sliding surface 2411, the position of the plug 110 is held by the supporting surface 2415, and its posture is held by the positioning surface 2414. The operating surface 2412 can be used to switch the posture of the retainer 240, which can switch the locking relationship between the first component and the second component. The locking surface 2413 can cooperate to lock the first component and the second component. For example, in one embodiment, at least a portion of the retainer 240 extends to the side edge of the attachment portion 220 to restrict the plug 110 from exiting the insertion channel 230.

[0060] Regarding the assembly relationship between retainer 240 and connector 110, refer to Appendix Figure 4In the illustrated embodiment, the anti-retraction portion 120 has multiple portions located on both sides of the retainer 240. The rotating shaft 242 has radially arranged positioning protrusions 243. The connector 110 has constraint holes 150 for rotatably engaging with the rotating shaft 242 and a positioning groove 151 located on one side of the constraint holes 150. The positioning protrusions 243 engage with the positioning groove 151 to determine a first posture. Specifically, the positioning groove 151 is open towards the positioning protrusions 243. When the retainer 240 is in the first posture, the positioning protrusions 243 are located within the positioning groove 151 and abut against the groove wall of the positioning groove 151.

[0061] In conjunction with the above, one embodiment of this application discloses a quick-connect structure, including a first component and a second component that are plugged into each other. The first component includes a plug body 110 with a stop portion 120, and the plug body 110 has opposing heads 111 and roots 112.

[0062] The second component includes a base 210 and an attachment portion 220 disposed opposite the base 210. A through-hole insertion channel 230 is formed between the attachment portion 220 and the base 210. The insertion body 110 has a first position (e.g., an attachment) near the base 210 such that the head 111 can pass through the insertion channel 230. Figure 9 As shown), and a second position (e.g., near the attachment portion 220, causing the stop portion 120 to interfere with the attachment portion 220 and restricting its exit from the insertion channel 230). Figure 6 (as shown);

[0063] The head 111 is also rotatably connected to a retainer 240, the retainer 240 having a first posture that allows the head 111 to pass through the insertion channel 230 (e.g., attached). Figure 9 (as shown) and a second posture in which the connector 110 is held in the second position by abutting against the base 210 (e.g., attached) Figure 6 (As shown).

[0064] The following is in conjunction with the appendix Figure 6 and appendix Figure 9 To be continued Figure 12 The connection process of the first component and the second component is illustrated below:

[0065] Appendix Figure 9 As shown, the connector 110 of the first component enters through the connector channel 230. The head 111 of the connector 110 slides along the base 210. The retainer 240 is in a first position.

[0066] Appendix Figure 10As shown, the head 111 of the connector 110 moves to the junction of the first guide surface 211 and the second guide surface 212 of the base 210. Guided by the second guide surface 212, the head 111 of the connector 110 gradually rises and approaches the attachment portion 220. The root 112 of the connector 110 avoids interference with the attachment portion 220 by avoiding the inclined surface 131. During this process, the retainer 240 also rotates relative to the head 111 and begins to enter the second posture. The power for the retainer 240 to rotate can come from the guidance of the second guide surface 212; it can also rotate relative to the head 111 due to its own center of gravity distribution and the action of gravity; it can also be due to the elastic force of the elastic element provided in the retainer 240; it can also be due to the external force applied by the user; or it can be due to the synergy of the above multiple reasons. (See attached diagram) Figure 4 and attached Figure 8 As shown, the retainer 240 has several cutouts to change its center of gravity, and the center of gravity of the retainer 240 is set off-center relative to the rotating shaft 242. Furthermore, the sliding surface 2411 and / or the support surface 2415 of the retainer 240 have cutouts.

[0067] Appendix Figure 11 As shown, the head 111 of the connector 110 is further raised and brought closer to the attachment portion 220. During this process, the retainer 240 also rotates further relative to the head 111 and gradually enters the second posture.

[0068] Appendix Figure 12 As shown, the plug body 110 enters the second position, the attachment part 220 is located between the anti-retraction part 120 and the avoidance slope 131 of the limiting part 130, the first component and the second component are separated from each other by the cooperation of the attachment part 220 and the anti-retraction part 120, the first component and the second component are close to each other by the cooperation of the limiting part 130 and the base 210, thereby realizing the locking of the relative positions of the first component and the second component; the retaining member 240 can be further rotated under the action of external force to enter the second posture.

[0069] Appendix Figure 6 As shown, the connector 110 enters the second position, the retainer 240 enters the second posture, and the first component and the second component are stably connected.

[0070] When the first and second components need to be separated, an external force drives the retainer 240 to exit the second posture, and the separation can be achieved by reversing the above process.

[0071] The quick-connect structure disclosed in this embodiment can quickly separate the first component and the second component while also achieving a stable connection between them.

[0072] Combining the above and the appendix Figure 1 To be continued Figure 7As shown, one embodiment of this application also discloses a breathing device, including a mask (not shown), a body 900, a restraint strap (not shown), and the quick-connect structure described above. The body 900 contains a fan assembly and a filter assembly for supplying air to the mask. One of the body 900 and the restraint strap is connected to a first component, and the other is connected to a second component. Through quick connection and separation between the first and second components, the body 900 can be quickly assembled and removed from the user's body, thereby improving the adaptability of the breathing device and enhancing the user experience. In this embodiment, "connection" refers to the establishment of a restraint relationship and does not limit the ownership of components. For example, the restraint strap can be fitted to an independent first part or second component, or refer to the attached diagram. Figure 2 In the illustrated embodiment, the constraint strap is provided with a connecting structure 910 that mates with either the first component or the second component. One end of the connecting structure 910 is connected to the plug-in body 110, and the other end is connected to the flexible portion of the constraint strap. Similarly, the main body can mate with either the independent first or second component, or it can provide either the first or second component through its own structure. (See attached figure.) Figure 2 In the illustrated embodiment, separate second components are provided on both sides of the housing of the body 900.

[0073] For example, the following description will exemplarily illustrate the cooperation details of an embodiment in which "the constraint strap is connected to the first component via the connecting structure 910, and the body provides the second component through its own shell". The connecting structures 910 at both ends of the constraint strap are respectively hinged to the corresponding first component. The root 112 of the first component is provided with an open hinge groove 160, and the constraint strap is provided with a hinge shaft 911 that mates with the hinge groove 160. (See attached diagram.) Figure 2 and attached Figure 3 In the illustrated embodiment, the hinge slot 160 is open to one side, and this side is provided with a spring piece 161 for holding the hinge shaft 911 within the hinge slot 160. The spring piece 161 has a yielding position that allows the hinge shaft 911 to enter or exit the hinge slot 160 and a free position that prevents the hinge shaft 911 from exiting the hinge slot 160. This arrangement enables the hinge shaft 911 and the hinge slot 160 to be connected while also allowing for quick release of both. Simultaneously, the connecting device can rotate relative to the first component to improve the wearing experience. Furthermore, the hinge slot 160 is segmented and located within the corresponding limiting portion 130 on each side. The spring piece 161 is located between each hinge slot 160 and acts on the middle of the hinge shaft 911.

[0074] The specific setup and working process of the quick-connect structure can be implemented with reference to any of the embodiments described above. The setup of other parts of the breathing device can be implemented with reference to the prior art, and will not be described again here.

[0075] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0076] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A quick-connect structure, comprising a first component and a second component that are interlocked, characterized in that, The first component includes a connector with a locking portion, the connector having opposing heads and roots; The second component includes a base and an attachment portion disposed opposite the base, wherein an insertion channel is formed between the attachment portion and the base, the insertion body having a first position near the base such that the head can pass through the insertion channel, and a second position near the attachment portion such that the stop portion interferes with the attachment portion and restricts its exit from the insertion channel. The head is also rotatably connected to a retainer, the retainer having a first posture that allows the head to pass through the insertion channel and a second posture that abuts against the base to hold the insertion body in a second position.

2. The quick-connect structure according to claim 1, characterized in that, In the direction of movement of the connector entering the connector channel, the base includes a first guide surface and a second guide surface with a smooth transition. The second guide surface is inclined relative to the first guide surface and drives the connector into the second position.

3. The quick-connect structure according to claim 2, characterized in that, The second guide surface drives the retainer into the second posture; or The retainer is driven by an external force to enter either the first posture or the second posture.

4. The quick-connect structure according to claim 1, characterized in that, In the insertion direction, the attachment portion has an open side edge, and when the plug body is in the second position, at least a portion of the stop portion and / or the retainer extends to the open side edge of the attachment portion to restrict the plug body from exiting the insertion channel.

5. The quick-connect structure according to claim 1, characterized in that, The retainer is an integral structure and includes a retaining part and rotating shafts disposed on both sides of the retaining part. The retaining part is rotatably engaged with the head through the rotating shafts. The outer peripheral surface of the retaining part includes: The sliding surface, in the first posture, is capable of sliding along the base; In the second posture, the operating surface is exposed on the outside of the insertion channel; The locking surface abuts against the side edge of the attachment portion when the plug body is in the second position and in the second posture. The positioning surface, when the plug body is in the second position and in the second posture, abuts against the bottom surface of the attachment portion and prevents the retainer from entering the first posture; The support surface, when in the second posture and the plug body is in the second position, abuts against the base to hold the plug body in the second position.

6. The quick-connect structure according to claim 5, characterized in that, The rotating shaft is provided with a positioning protrusion in the radial direction, and the plug body is provided with a constraint hole for rotating with the rotating shaft and a positioning groove provided on one side of the constraint hole. The positioning protrusion cooperates with the positioning groove to determine the first posture.

7. The quick-connect structure according to claim 1, characterized in that, The connector has a support portion on the side facing the base. During the process of the connector moving from the first position to the second position, the support portion always abuts against the base and provides a fulcrum. The connector swings around the fulcrum as the rotation center.

8. The quick-connect structure according to claim 1, characterized in that, The root portion is provided with a limiting portion facing the head. During the process of the plug body moving from the first position to the second position, the limiting portion cooperates with the base portion and / or the attachment portion to limit the insertion depth of the plug body relative to the plugging channel.

9. A breathing device, characterized in that, The device includes a face mask, a body, restraint straps, and a quick-connect structure according to any one of claims 1 to 8, wherein one of the body and the restraint straps is connected to the first component and the other is connected to the second component, wherein the body contains a fan assembly and a filter assembly for supplying air to the face mask.

10. The breathing device according to claim 9, characterized in that, The second component is connected to both sides of the housing of the main body. The two ends of the constraint band are respectively hinged to the corresponding first component. The root of the first component is provided with an open hinge groove. The constraint band is provided with a hinge shaft that matches the hinge groove.

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