Non-resistive oxygen supply and exhaust servo breathing device

Abstract

The present application relates to the technical field of medical apparatus and instruments, and discloses a non-resistance oxygen supply and discharge follow-up breathing device, which comprises a main machine, a joint arranged at the bottom of the main machine, a winding mechanism arranged at the side of the joint away from the main machine, and a driving mechanism arranged at the outer side of the winding mechanism; the winding mechanism comprises a docking unit arranged at the side of the joint away from the main machine, a unwinding unit arranged in the docking unit, and a winding unit arranged at the side of the docking unit away from the unwinding unit; the docking unit comprises a fixed pipe arranged at the side of the joint away from the main machine, a limiting ring arranged at the side of the fixed pipe close to the main machine, a cover arranged at the outer side of the limiting ring, and a through hole opened at the side of the cover away from the fixed pipe. Through the arrangement of the winding mechanism, the continuous replacement of the filter membrane working area can be realized, so that the disadvantages of the traditional equipment needing to be stopped for replacing the filter membrane are avoided, the replacement process is simplified, and the operation of replacing the filter membrane is fast and convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a non-resistance oxygen supply and exhaust follow-up breathing device. BACKGROUND

[0002] The non-resistance oxygen supply and exhaust follow-up breathing device is an advanced breathing assistance equipment, which aims to provide efficient and comfortable oxygen supply and carbon dioxide exhaust experience for users. Its core feature is the ability to automatically adjust the flow of oxygen supply and exhaust according to the user's breathing rhythm, ensuring a natural and smooth breathing process. This device, through precise sensors and intelligent control systems, monitors the user's breathing frequency and depth in real time, dynamically adjusts the oxygen output and exhaust, and avoids the common breathing resistance or discomfort in traditional breathing equipment. The device is widely used in medical scenarios, and in the medical field, it is commonly used in intensive care units, operating rooms, and daily care of patients with chronic respiratory diseases, helping patients maintain stable blood oxygen levels.

[0003] The traditional non-resistance oxygen supply and exhaust follow-up breathing device is widely used in medical scenarios, but due to its structure and working principle, there are some problems that cannot be ignored. Although the traditional non-resistance oxygen supply and exhaust follow-up breathing device performs well in breathing assistance, it has problems such as the need to stop and replace the filter surface and low replacement efficiency, which brings many inconveniences to users. First of all, the filter surface of the traditional device needs to be replaced regularly to ensure the normal operation of the equipment and the safety of the user's breathing. However, the filter surface must be replaced during shutdown operation, which means that the user has to interrupt the breathing assistance function during use. For critically ill patients who rely on breathing devices, this interruption may cause temporary hypoxia or discomfort, and even may pose a certain risk to health. In addition, frequent shutdown replacement will also affect the continuous use efficiency of the equipment, especially in medical emergency or long-term exercise scenarios, such interruptions are unacceptable. Secondly, the replacement operation of the traditional filter surface is usually complex and inefficient. The replacement process may require disassembly of multiple components, and even professional personnel may be required to operate, which not only increases the time cost, but also may cause operational errors or equipment damage. For non-professionals, it is difficult to quickly and accurately complete the replacement operation, resulting in a long replacement process and failing to meet the needs of emergency situations, further reducing the practicality of the equipment and user experience. SUMMARY

[0004] In view of the problems of existing technology, such as the need to stop and replace the filter assembly and the low efficiency of replacing the filter assembly, a non-resistance oxygen supply and exhaust follow-up breathing device is proposed.

[0005] The purpose is to avoid stopping and replacing the filter assembly and to quickly replace the filter assembly, thereby reducing the medical risks caused by stopping.

[0006] The technical scheme of the present application is a non-resistance oxygen supply and exhaust follow-up breathing device, comprising a main machine, a joint arranged at the bottom of the main machine, a winding mechanism arranged at the side of the joint away from the main machine, and a driving mechanism arranged outside the winding mechanism.

[0007] The winding mechanism comprises a docking unit arranged at the side of the joint away from the main machine, a unwinding unit arranged inside the docking unit, and a winding unit arranged at the side of the docking unit away from the unwinding unit.

[0008] The docking unit comprises a fixed tube arranged at the side of the joint away from the main machine, a limiting ring arranged at the side of the fixed tube close to the main machine, a cover arranged outside the limiting ring, a through hole opened at the side of the cover away from the fixed tube, an extension tube arranged inside the through hole, two long grooves symmetrically opened at the two sides of the extension tube, an upper arc rod arranged at the inner wall of the top of the cover close to the fixed tube, two upper supporting blocks symmetrically arranged at the inner wall of the top of the cover close to the upper arc rod, a feeding roller arranged inside the upper supporting block, both ends of the feeding roller being rotatably connected with the two upper supporting blocks, a lower arc rod arranged at the inner wall of the bottom of the cover close to the extension tube, two lower supporting blocks symmetrically arranged at the inner wall of the bottom of the cover close to the lower arc rod, and a receiving roller arranged inside the lower supporting block, both ends of the receiving roller being rotatably connected with the two lower supporting blocks.

[0009] Further, a circular hole is opened at the side of the cover close to the joint, a ring groove is opened at the inner side of the circular hole, and the outer shape of the ring groove matches the limiting ring.

[0010] Further, the unwinding unit comprises two stop rings linearly arranged in the middle part of the fixed tube, a shaft sleeve arranged outside the fixed tube, both ends of the shaft sleeve being rotatably connected with the two stop rings, four circular grooves symmetrically opened at the top and bottom of the shaft sleeve, a latch arranged at the top of the circular groove, an ejection spring arranged at the bottom of the latch, the top and bottom of the ejection spring being fixedly connected with the latch and the circular groove, a material roll arranged outside the shaft sleeve, two sliding grooves symmetrically opened at the inner wall of the material roll, the top of the latch being clamped with the inner wall of the sliding groove, and a filter membrane arranged outside the material roll.

[0011] Further, two arc-shaped grooves are symmetrically opened at the top of the sliding groove, and the shape of the grooves matches the outer shape of the top of the latch.

[0012] Further, the winding unit comprises two circular rings linearly arranged in the middle part of the extension tube, a cylinder arranged outside the extension tube, both sides of the cylinder being rotatably connected with the two circular rings, a mainspring arranged inside the cylinder, both ends of the mainspring being fixedly connected with the cylinder and the extension tube, and a winding drum sleeved outside the cylinder, the outer side of the winding drum being fixedly connected with the side of the filter membrane away from the fixed tube.

[0013] Further, the cylinder is internally provided with a cavity, and both ends of the cylinder are provided with assembly holes penetrating to the cavity.

[0014] Further, the driving mechanism comprises two positioning rings arranged in the middle of the shell in a linear array, a driving ring arranged outside the shell, a corrugated groove arranged in the inner wall of the driving ring, two guide holes symmetrically arranged on both sides of the shell, two cross bars symmetrically arranged on one side of the telescopic pipe close to the fixed top pipe, the ends of the cross bars away from the telescopic pipe penetrating the guide holes and being slidably connected with the corrugated groove, and a reset spring sleeved on the side of the telescopic pipe away from the cross bar, both ends of the reset spring being fixedly connected with the shell and the annular ring.

[0015] Further, the diameter of the cross bar matches the width of the guide hole, and the distance between the two positioning rings matches the width of the driving ring.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. By arranging the winding mechanism, the continuous replacement of the filter membrane working area can be realized, thereby avoiding the disadvantages of traditional equipment needing to stop working for replacing the filter membrane. The use area of the filter membrane can be adjusted through the cooperation of the winding and unwinding, so that clean filter membrane is always involved in work during the operation of the device. This design not only eliminates the interruption risk caused by replacement, but also improves the continuous operation efficiency of the equipment. At the same time, the introduction of the winding mechanism simplifies the operation process of filter membrane replacement, reduces the frequency and complexity of manual intervention, and provides more stable and reliable breathing assistance for users, so that the equipment is more suitable for scenes requiring long-term continuous operation.

[0018] 2. By arranging the driving mechanism, the user can replace the filter membrane working area by simply rotating the driving ring. This design avoids the complex operation of disassembling components in traditional equipment, simplifies the replacement process, and quickly puts the new filter membrane area into working condition while moving the used part out. This mechanism not only reduces the operation steps, but also reduces the risk of equipment damage caused by disassembling components.

[0019] 3. By arranging the upper arc rod and the lower arc rod, the feeding roller and the collecting roller can work cooperatively to guide the filter membrane. The structural design of the upper arc rod and the lower arc rod ensures that the filter membrane remains stable during movement, avoiding deviation or wrinkles. The feeding roller and the collecting roller keep the filter membrane flat, and their cooperation ensures that the working area of the filter membrane is always in the correct position, ensuring the consistency of the filtering effect. This design not only optimizes the replacement process of the filter membrane, but also reduces the frequency of manual intervention, improving the operation efficiency and reliability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0021] Figure 2 Enlarged view of the winding mechanism of the present application;

[0022] Figure 3 Schematic view of the internal structure of the cover of the present application;

[0023] Figure 4 Schematic view of the connection between the fixed tube and the sleeve of the present application;

[0024] Figure 5 Schematic view of the connection between the sleeve and the material roll of the present application;

[0025] Figure 6 Schematic view of the structure of the material roll of the present application;

[0026] Figure 7 Cross-sectional view of the cover of the present application;

[0027] Figure 8 Schematic view of the connection between the telescopic tube and the return spring of the present application;

[0028] Figure 9 Schematic view of the connection between the winding drum and the cylinder of the present application;

[0029] Figure 10 Schematic view of the connection between the crossbar and the driving ring of the present application;

[0030] Figure 11 Schematic view of the unwinding and winding of the filter membrane of the present application;

[0031] Figure 12 Schematic view of the connection between the positioning ring and the cover of the present application.

[0032] In the figure:

[0033] 1. main machine; 2. joint; 3. winding mechanism; 4. driving mechanism; 31. fixed tube; 32. limiting ring; 33. cover; 34. through hole; 35. telescopic tube; 36. long slot; 37. upper arc rod; 38. upper supporting block; 39. material unwinding roller; 310. lower arc rod; 311. lower supporting block; 312. material winding roller; 313. stop ring; 314. sleeve; 315. circular groove; 316. latch; 317. ejection spring; 318. material roll; 319. sliding groove; 320. filter membrane; 321. circular ring; 322. cylinder; 323. clockwork; 324. winding drum; 41. positioning ring; 42. driving ring; 43. corrugated groove; 44. guide hole; 45. crossbar; 46. return spring. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0035] Embodiment 1, refer to Figures 1-12 For the first embodiment of the application, a non-resistance oxygen supply and exhaust servo breathing device is provided, comprising a host computer 1, a connector 2 fixedly connected to the bottom of the host computer 1, a winding mechanism 3 assembled on the side of the connector 2 away from the host computer 1, and a driving mechanism 4 assembled on the outside of the winding mechanism 3; the winding mechanism 3 comprises a docking unit installed on the side of the connector 2 away from the host computer 1, a unwinding unit installed inside the docking unit, and a winding unit installed on the side of the docking unit away from the unwinding unit; the docking unit comprises a fixed tube 31 fixedly connected to the side of the connector 2 away from the host computer 1, a limiting ring 32 fixedly connected to the side of the fixed tube 31 close to the host computer 1, a cover 33 fixedly connected to the outside of the limiting ring 32, a through hole 34 opened on the side of the cover 33 away from the fixed tube 31, a telescopic tube 35 slidingly connected to the inside of the through hole 34, two long grooves 36 symmetrically opened on both sides of the telescopic tube 35, an upper arc rod 37 fixedly connected to the inside wall of the top of the cover 33 close to the fixed tube 31, two upper supporting blocks 38 symmetrically fixedly connected to the inside wall of the top of the cover 33 close to the upper arc rod 37, a feeding roller 39 rotatably connected to the inside of the upper supporting block 38, both ends of the feeding roller 39 being rotatably connected to the two upper supporting blocks 38 respectively, a lower arc rod 310 fixedly connected to the inside wall of the bottom of the cover 33 close to the telescopic tube 35, two lower supporting blocks 311 symmetrically fixedly connected to the inside wall of the bottom of the cover 33 close to the lower arc rod 310, and a receiving roller 312 rotatably connected to the inside of the lower supporting block 311, both ends of the receiving roller 312 being rotatably connected to the two lower supporting blocks 311 respectively.

[0036] Specifically, the filter membrane 320 is sequentially threaded through the top of the upper arc rod 37 and the top of the pay-off roller 39 away from the one end of the joint 2, and the filter membrane 320 is vertically downward around the pay-off roller 39, and then sequentially threaded through the bottom of the take-up roller 312 and the bottom of the lower arc rod 310, and the filter membrane 320 is connected with the winding drum 324, at this time the part of the filter membrane 320 between the pay-off roller 39 and the take-up roller 312 will be in a flat state, and the side of the filter membrane 320 close to the joint 2 is always attached to the fixed tube 31. After the telescopic tube 35 is connected with the fixed tube 31, the gas flowing through will be filtered by the filter membrane 320. Under the action of the winding mechanism 3, the breathing device can realize the continuous replacement of the working area of the filter membrane 320, thereby avoiding the disadvantages of stopping the machine for replacing the filter membrane 320 in the traditional equipment. The mechanism can adjust the use area of the filter membrane 320 through the cooperation of the take-up and pay-off, and ensure that the device always has clean filter membrane 320 participating in work during operation. This design not only eliminates the interruption risk caused by replacement, but also improves the continuous operation efficiency of the equipment. At the same time, the introduction of the winding mechanism 3 simplifies the operation process of replacing the filter membrane 320, reduces the frequency and complexity of manual intervention, and provides more stable and reliable breathing assistance for users, so that the equipment is more suitable for scenes that need to be continuously operated for a long time. And through the upper arc rod 37 and the lower arc rod 310, the pay-off roller 39 and the take-up roller 312 can work cooperatively to guide the filter membrane 320. The structural design of the upper arc rod 37 and the lower arc rod 310 ensures that the filter membrane 320 remains stable during movement, avoiding deviation or wrinkles. The pay-off roller 39 and the take-up roller 312 keep the filter membrane 320 flat. The cooperation of the two ensures that the working area of the filter membrane 320 is always in the correct position, ensuring the consistency of the filtering effect. This design not only optimizes the replacement process of the filter membrane 320, but also reduces the frequency of manual intervention, improves the operation efficiency and reliability of the equipment.

[0037] With reference to Figure 3 and Figure 7 , the cover 33 is provided with a circular hole on the side close to the joint 2, and a ring groove is formed on the inner side of the circular hole, and the shape of the ring groove matches the limiting ring 32.

[0038] Specifically, the fixed tube 31 penetrates the cover 33 through the circular hole, and the cover 33 is connected with the limiting ring 32 to keep itself relatively stationary with the fixed tube 31.

[0039] With reference to Figures 3-7The unwinding unit comprises two linear arrays of check rings 313 fixedly connected to the middle part of the fixed tube 31, a shaft sleeve 314 rotatably connected to the outer side of the fixed tube 31, two ends of the shaft sleeve 314 rotatably connected with the two check rings 313 respectively, four symmetrical circular grooves 315 opened at the top and bottom of the shaft sleeve 314, a latch pin 316 slidably connected to the top of the circular groove 315, an ejection spring 317 fixedly connected to the bottom of the latch pin 316, the top and bottom of the ejection spring 317 fixedly connected with the latch pin 316 and the circular groove 315 respectively, a material roll 318 clamped to the outer side of the shaft sleeve 314, two symmetrical sliding grooves 319 opened in the inner wall of the material roll 318, the top of the latch pin 316 clamped with the inner wall of the sliding groove 319, and a filter membrane 320 fixedly connected to the outer side of the material roll 318.

[0040] Specifically, by aligning the sliding grooves 319 on the material roll 318 with the latch pin 316, the material roll 318 is sleeved outside the shaft sleeve 314, and the latch pin 316 will be constrained by cooperating with the sliding grooves 319, so that the position between the material roll 318 and the shaft sleeve 314 remains relatively fixed under the condition that the axial force acting on the material roll 318 is less than the frictional force between the latch pin 316 and the sliding grooves 319.

[0041] Referring to Figure 5 and Figure 6 , the top of the sliding groove 319 is symmetrically provided with two arc-shaped grooves, and the shape of the grooves matches the top profile of the latch pin 316.

[0042] Specifically, the latch pin 316 can keep the top matched with the arc-shaped grooves of the sliding groove 319 under the action of the ejection spring 317, so that the material roll 318 is fixed.

[0043] Referring to Figure 8 and Figure 9 , the winding unit comprises two circular rings 321 fixedly connected to the middle part of the telescopic tube 35, a circular cylinder 322 rotatably connected to the outer side of the telescopic tube 35, two sides of the circular cylinder 322 rotatably connected with the two circular rings 321 respectively, a mainspring 323 fixedly connected to the inner side of the circular cylinder 322, two ends of the mainspring 323 fixedly connected with the circular cylinder 322 and the telescopic tube 35 respectively, and a winding drum 324 sleeved outside the circular cylinder 322, the outer side of the winding drum 324 fixedly connected with the side of the filter membrane 320 away from the fixed tube 31.

[0044] Specifically, when the fixed tube 31 and the telescopic tube 35 are in the non-docking state, the spring 323 releases energy to drive the cylinder 322 to rotate, and the cylinder 322 drives the winding drum 324 to rotate at the same time, and the winding drum 324 rotates to wind the filter membrane 320, and after the filter membrane 320 is wound, the area adhered to the fixed tube 31 will be replaced by the unused area, and when the fixed tube 31 and the telescopic tube 35 are docked, the filter membrane 320 will be clamped to stop moving, so that the spring 323 is constrained and no longer drives the cylinder 322 and the winding drum 324 to rotate.

[0045] With reference to Figure 9 The inside of the cylinder 322 is provided with a cavity, and the two ends of the cylinder 322 are provided with assembly holes penetrating into the cavity.

[0046] Specifically, the telescopic tube 35 penetrates through the assembly holes at the two ends of the cylinder 322, so that the cylinder 322 can only rotate around the telescopic tube 35 as the center, and the cavity of the cylinder 322 can accommodate the spring 323 to move inside.

[0047] Embodiment 2, with reference to Figures 3-12 The second embodiment of the present application is different from the first embodiment in that the driving mechanism 4 includes two positioning rings 41 linearly arrayed and fixedly connected to the middle part of the shell 33, a driving ring 42 rotatably connected to the outside of the shell 33, a corrugated groove 43 formed in the inner wall of the driving ring 42, two guide holes 44 symmetrically formed on the two sides of the shell 33, two cross rods 45 symmetrically fixedly connected to the side of the telescopic tube 35 close to the fixed top tube, the ends of the cross rods 45 away from the telescopic tube 35 penetrating through the guide holes 44 and slidably connected with the corrugated groove 43, and a reset spring 46 sleeved on the side of the telescopic tube 35 away from the cross rods 45, the two ends of the reset spring 46 being fixedly connected with the shell 33 and the circular ring 321 respectively.

[0048] Specifically, the rotating driving ring 42 will be able to drive the two cross bars 45 to move through the corrugated groove 43, the cross bars 45 can only move along the direction of the guide hole 44 due to the constraint of the guide hole 44, the cross bars 45 move at the same time drive the telescopic tube 35 to move, the telescopic tube 35 moves at the same time will extrude the reset spring 46, and the telescopic tube 35 will no longer be connected with the fixed tube 31 after moving, thereby releasing the fixation of the filter membrane 320, the filter membrane 320 is not constrained, the drum 324 and the cylinder 322 will rotate under the action of the clockwork 323, the drum 324 rotates at the same time winding the filter membrane 320, the used part of the filter membrane 320 will move to the direction of the drum 324, making the unused part move to the end of the fixed tube 31 away from the joint 2, when the corrugated groove 43 drives the telescopic tube 35 to move to the maximum stroke through the cross bars 45, the telescopic tube 35 will reset under the action of the reset spring 46, re-connect with the fixed tube 31, and fix the filter membrane 320, so that the drum 324 no longer winds.

[0049] With reference to Figures 2-3 , the diameter of the cross bar 45 matches the width of the guide hole 44, and the distance between the two positioning rings 41 matches the width of the driving ring 42.

[0050] Specifically, the guide hole 44 can constrain the moving direction of the cross bar 45, the corrugated groove 43 drives the cross bar 45 to move through the inclined part, and makes the cross bar 45 reset through the part parallel to its axis, the driving ring 42 can only rotate away from the two positioning rings 41, and the rest of the structure is the same as that of example 1.

[0051] In combination with the embodiments 1-2, the working principle of the present application is as follows: after the chute 319 of the material roll 318 is aligned with the latch 316, the material roll 318 is sleeved outside the shaft sleeve 314, the ejector spring 317 extends the latch 316, the top of the latch 316 is matched with the arc-shaped groove of the chute 319, the material roll 318 is fixed, and the filter membrane 320 is passed through the top of the upper arc rod 37 and the discharge roller from the end of the fixed tube 31 by one foot, then the filter membrane 320 is passed through the bottom of the lower arc rod 310 and the material collecting roller 312 in sequence, the cylinder 322 is rotated to store the power of the clockwork 323, then the reel 324 connected with the filter membrane 320 is sleeved outside the cylinder 322, the telescopic tube 35 is matched with the fixed tube 31 under the action of the reset spring 46, so that the filter membrane 320 is fixed, when there is airflow in the pipeline formed by the fixed tube 31 and the telescopic tube 35, the airflow will be filtered by the filter membrane 320, when the filter membrane 320 needs to be replaced, the driving ring 42 is rotated, the driving ring 42 will drive the cross rod 45 to move through the bellows at the same time of rotation, the cross rod 45 moves along the guide hole 44 under the action, and the telescopic tube 35 moves at the same time under the action of the cross rod 45, the telescopic tube 35 moves away from the fixed tube 31 under the action, so that the filter membrane 320 is no longer fixed, at this time, the clockwork 323 drives the cylinder 322 to rotate, the cylinder 322 drives the reel 324 to rotate at the same time of rotation, the reel 324 winds the filter membrane 320 when rotating, at this time, the used area of the filter membrane 320 moves to the direction of the reel 324, the unused part moves to the position where the fixed tube 31 and the telescopic tube 35 are connected, the telescopic tube 35 is reset under the action of the reset spring 46 after the bellows 43 drives the telescopic tube 35 to move to the maximum stroke, the filter membrane 320 is fixed by the fixed tube 31 and the telescopic tube 35, the replacement of the filter membrane 320 is completed, the telescopic tube 35 is quickly moved and reset by quickly rotating the driving ring 42, and the clockwork 323 is wound at the moment of movement of the telescopic tube 35 because the clockwork 323 is in the power storage state, so that the quick replacement of the working area of the filter membrane 320 is completed.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A resistance-free oxygen supply and exhaust follow-up breathing device, comprising a main unit (1) and a connector (2) disposed at the bottom of the main unit (1), characterized in that: It also includes a winding mechanism (3) disposed on the side of the connector (2) away from the host (1), and a drive mechanism (4) disposed on the outside of the winding mechanism (3); The winding mechanism (3) includes a docking unit disposed on the side of the connector (2) away from the host (1), an unwinding unit disposed inside the docking unit, and a winding unit disposed on the side of the docking unit away from the unwinding unit. The docking unit includes a fixed tube (31) disposed on the side of the connector (2) away from the host (1), a limiting ring (32) disposed on the side of the fixed tube (31) close to the host (1), a cover (33) disposed on the outside of the limiting ring (32), a through hole (34) opened on the side of the cover (33) away from the fixed tube (31), a telescopic tube (35) disposed on the inside of the through hole (34), two elongated slots (36) symmetrically opened on both sides of the telescopic tube (35), an upper arc rod (37) disposed on the inner wall of the top of the cover (33) close to the fixed tube (31), and two symmetrically disposed on the cover (33). The upper support block (38) is located on the inner wall of the top of the upper arc rod (37), and the feeding roller (39) is located inside the upper support block (38). The two ends of the feeding roller (39) are rotatably connected to the two upper support blocks (38), the lower arc rod (310) is located on the inner wall of the bottom of the cover (33) near the telescopic tube (35), the two lower support blocks (311) are symmetrically located on the inner wall of the bottom of the cover (33) near the lower arc rod (310), and the receiving roller (312) is located inside the lower support block (311). The two ends of the receiving roller (312) are rotatably connected to the two lower support blocks (311). The drive mechanism (4) includes two positioning rings (41) arranged in a linear array in the middle of the cover (33), a drive ring (42) arranged on the outside of the cover (33), a corrugated groove (43) opened on the inner wall of the drive ring (42), two guide holes (44) symmetrically opened on both sides of the cover (33), two crossbars (45) symmetrically arranged on the side of the telescopic tube (35) near the fixed top tube, one end of the crossbar (45) away from the telescopic tube (35) passing through the guide hole (44) and slidingly connected to the corrugated groove (43), and a return spring (46) sleeved on the side of the telescopic tube (35) away from the crossbar (45), the two ends of the return spring (46) being fixedly connected to the cover (33) and the ring (321) respectively; One end of the filter membrane (320) passes through the top of the upper arc rod (37) and the feeding roller (39) in sequence, and then passes through the bottom of the receiving roller (312) and the lower arc rod (310) in sequence.

2. The resistance-free oxygen supply and exhaust follow-up breathing device according to claim 1, characterized in that: The cover (33) has a round hole on the side near the connector (2), and an annular groove is formed on the inner side of the round hole, and the shape of the annular groove matches the limiting ring (32).

3. The resistance-free oxygen supply and exhaust follow-up breathing device according to claim 1, characterized in that: The unwinding unit includes two linear array retaining rings (313) arranged in the middle of the fixed tube (31), a bushing (314) arranged on the outside of the fixed tube (31), the two ends of the bushing (314) being rotatably connected to the two retaining rings (313) respectively, four circular grooves (315) symmetrically opened on the top and bottom of the bushing (314), a pin (316) arranged on the top of the circular groove (315), an ejector spring (317) arranged on the bottom of the pin (316), the top and bottom of the ejector spring (317) being fixedly connected to the pin (316) and the circular groove (315) respectively, a material roll (318) arranged on the outside of the bushing (314), two sliding grooves (319) symmetrically opened on the inner wall of the material roll (318), the top of the pin (316) engaging with the inner wall of the sliding groove (319), and a filter membrane (320) arranged on the outside of the material roll (318).

4. The resistance-free oxygen supply and exhaust follow-up breathing device according to claim 3, characterized in that: The top of the slide (319) has two symmetrical arc-shaped grooves, and the shape of the grooves matches the top shape of the pin (316).

5. The resistance-free oxygen supply and exhaust follow-up breathing device according to claim 1, characterized in that: The winding unit includes two linearly arrayed rings (321) arranged in the middle of the telescopic tube (35), a cylinder (322) arranged on the outside of the telescopic tube (35), the two sides of the cylinder (322) being rotatably connected to the two rings (321) respectively, a spring (323) arranged on the inside of the cylinder (322), the two ends of the spring (323) being fixedly connected to the cylinder (322) and the telescopic tube (35) respectively, and a roll (324) sleeved on the outside of the cylinder (322), the outside of the roll (324) being fixedly connected to the side of the filter membrane (320) away from the fixed tube (31).

6. The resistance-free oxygen supply and exhaust follow-up breathing device according to claim 5, characterized in that: The cylinder (322) has an internal cavity, and both ends of the cylinder (322) have assembly holes that extend into the cavity.

7. The resistance-free oxygen supply and exhaust follow-up breathing device according to claim 1, characterized in that: The diameter of the crossbar (45) matches the width of the guide hole (44), and the spacing between the two positioning rings (41) matches the width of the drive ring (42).

Images