Portable oxygen generator

Abstract

Moving wheel mechanisms are arranged on the two sides of the portable oxygen generator and comprise T-shaped frames capable of sliding up and down, moving wheel supports on the two sides and moving wheels at the bottom end, the middles of the supports are rotationally connected with the side walls of a machine body, and the two ends of the horizontal portion of each T-shaped frame are slidably connected with the top ends of the corresponding moving wheel supports. A U-shaped handrail is arranged above the machine body and connected with the top ends of the two T-shaped frames to lift synchronously, a driving mechanism is arranged in the machine to drive the T-shaped frames to move, and a locking mechanism is arranged on the side wall to fix the T-shaped frames. The driving mechanism drives a gear and a rack to transmit through a crank, and the crank can be stored; the locking mechanism fixes the T-shaped frame through a spring and a limiting block, and unlocking is easy and convenient. And the side wall recess and the housing protection part are arranged, and the housing is detachable. The tension spring on the support assists the moving wheel in resetting and prevents the moving wheel from falling down.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oxygen generator, in particular to a portable oxygen generator. BACKGROUND

[0002] The medical oxygen generator is a kind of medical equipment that extracts oxygen from air through specific technology to provide medical-grade oxygen for patients, and is widely used in hospitals, clinics and home care scenes, and is an important tool to protect the breathing treatment of patients with hypoxia. The commonly used medical oxygen generator at present is a molecular sieve oxygen generator, which separates high-concentration oxygen from nitrogen in air through molecular sieve adsorption.

[0003] In order to facilitate movement, the existing molecular sieve oxygen generator is usually provided with universal wheels with locks at the bottom. When moving is needed, the universal wheels are unlocked for movement, and when normal use is needed, the universal wheels are locked for fixation. However, the central shaft of the universal wheel in this moving structure always bears the overall weight of the oxygen generator, and long-term stress can easily cause wear and tear, thereby causing the equipment to be tilted or even unable to move normally. In addition, in hospitals, some oxygen generators need to be used in special scenes such as ambulances, and in special use scenes such as ambulances, due to the limited contact area of the universal wheel with the ground, it is difficult to achieve stable fixation only by relying on the locking function, and the equipment is prone to slip during vehicle driving, which not only affects the stability of treatment, but also may cause equipment damage or safety hazards due to collision.

[0004] The portable oxygen generator provided by the present application optimizes the structural design on the basis of retaining the oxygen generation function and the moving function, so that the oxygen generator can be stably supported and placed when not moving, and slipping is avoided. SUMMARY

[0005] The purpose of the present application is to overcome the above technical problems and provide a portable oxygen generating device suitable for indoor and ambulance environments.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a portable oxygen generator, comprising an oxygen generator and a moving wheel mechanism arranged on the opposite side walls of the oxygen generator, the moving wheel mechanism comprising a T-shaped frame slidingly arranged on the side wall of the oxygen generator, two moving wheel supports symmetrically arranged on the two sides of the T-shaped frame, and a moving wheel installed at the bottom end of the moving wheel support, the middle part of the moving wheel support being rotatably connected with the side wall of the oxygen generator, the horizontal part of the T-shaped frame facing downward, and the vertical part facing upward, and the two ends of the horizontal part being slidingly connected with the top ends of the two moving wheel supports respectively; a U-shaped handrail is arranged above the oxygen generator, and the top parts of the two T-shaped frames are fixedly connected with the two ends of the U-shaped handrail respectively, so that the two T-shaped frames are synchronously lifted and lowered, and a driving mechanism for driving the T-shaped frame to move up and down is arranged in the oxygen generator, and a locking mechanism for fixing the T-shaped frame is arranged on the side wall of the oxygen generator.

[0007] Further, the T-shaped frame horizontal part is provided with a fixed column at both ends, and the mobile wheel support is provided with a strip-shaped slot at one end away from the mobile wheel.

[0008] Further, the side wall of the oxygen generator is provided with a chute corresponding to the vertical part of the T-shaped frame, and the bottom of the side wall of the oxygen generator is provided with a recess in communication with the bottom end of the chute, and the T-shaped frame horizontal part, the mobile wheel support and the mobile wheel are located in the recess.

[0009] Further, the side wall of the oxygen generator is provided with a chute corresponding to the vertical part of the T-shaped frame, and the bottom of the side wall of the oxygen generator is provided with a recess in communication with the bottom end of the chute, and the T-shaped frame horizontal part, the mobile wheel support and the mobile wheel are located in the recess.

[0010] Further, the side wall of the oxygen generator is provided with a chute corresponding to the vertical part of the T-shaped frame, and the bottom of the side wall of the oxygen generator is provided with a recess in communication with the bottom end of the chute, and the T-shaped frame horizontal part, the mobile wheel support and the mobile wheel are located in the recess.

[0011] Further, the side wall of the oxygen generator is provided with a chute corresponding to the vertical part of the T-shaped frame, and the bottom of the side wall of the oxygen generator is provided with a recess in communication with the bottom end of the chute, and the T-shaped frame horizontal part, the mobile wheel support and the mobile wheel are located in the recess.

[0012] Further, the side wall of the oxygen generator is provided with a chute corresponding to the vertical part of the T-shaped frame, and the bottom of the side wall of the oxygen generator is provided with a recess in communication with the bottom end of the chute, and the T-shaped frame horizontal part, the mobile wheel support and the mobile wheel are located in the recess.

[0013] Further, the side wall of the oxygen generator is provided with a chute corresponding to the vertical part of the T-shaped frame, and the bottom of the side wall of the oxygen generator is provided with a recess in communication with the bottom end of the chute, and the T-shaped frame horizontal part, the mobile wheel support and the mobile wheel are located in the recess.

[0014] Further, the side wall of the oxygen generator is provided with a chute corresponding to the vertical part of the T-shaped frame, and the bottom of the side wall of the oxygen generator is provided with a recess in communication with the bottom end of the chute, and the T-shaped frame horizontal part, the mobile wheel support and the mobile wheel are located in the recess.

[0015] Further, the side wall of the oxygen generator is provided with a chute corresponding to the vertical part of the T-shaped frame, and the bottom of the side wall of the oxygen generator is provided with a recess in communication with the bottom end of the chute, and the T-shaped frame horizontal part, the mobile wheel support and the mobile wheel are located in the recess.

[0016] The beneficial effects of the present application are: 1. The present application can drive the mobile wheels to flexibly contact or leave the ground through the ingenious cooperation of the T-shaped frame, the mobile wheel support and the driving mechanism. When the oxygen generator is in a stationary state, the mobile wheels can be retracted, so that the oxygen generator can be directly placed stably through the bottom of the machine body, effectively solving the problem of easy damage and equipment tilting caused by continuous bearing of the traditional universal wheels. In addition, the contact area between the machine body and the ground is significantly increased, compared with relying only on the locking of the universal wheels, the stability during stationary is greatly improved, especially in mobile scenarios such as ambulances, which can effectively prevent the oxygen generator from slipping and ensure the stability of treatment and the safety of equipment.

[0017] 2. The U-shaped handrail is fixedly connected with the top ends of the two T-shaped frames, ensuring that the two T-shaped frames are lifted synchronously, so that the retracted state of the mobile wheels on both sides remains consistent, avoiding equipment tilting caused by different states of the mobile wheels on both sides, and facilitating the pushing of the oxygen generator by the handrail.

[0018] 3. The driving mechanism adopts the mode of driving gear driven by a crank, which is simple and labor-saving. The cranks of the two driving mechanisms are respectively arranged on the two sides of the oxygen generator, facilitating operation from the side. The crank can be retracted into the storage slot through the sliding cooperation of the sliding block and the slot, reducing space occupation and avoiding the increase of stress on the locking mechanism caused by accidental touch of the crank during movement, thereby preventing damage. The setting of the magnetic block ensures the stability of the crank after being retracted, and the stop block limits the crank, further improving the convenience of operation and the rationality of the structure.

[0019] 4. The locking mechanism can effectively fix the T-shaped frame through the cooperation of the return spring and the telescopic limiting block, ensuring that the mobile wheels remain stable in the working or retracted state. The design of the pressing block and the pressing piece makes the unlocking operation simple, and the outer end of the pressing piece is always located in the through hole, avoiding accidental touch and improving the safety and reliability of use.

[0020] 5. The recess and the cover shell designed on the side wall of the oxygen generator can effectively protect the horizontal part of the T-shaped frame, the mobile wheel support and the mobile wheel when the mobile wheel is retracted, reducing the damage of external collision to these components. The cover shell is detachably connected with the oxygen generator, facilitating the maintenance and maintenance of the internal components.

[0021] 6. The tension spring on the mobile wheel support can assist the mobile wheel to reset, which always provides a force to the lower half of the mobile wheel support to move towards the middle, so that the T-shaped frame is more easily lifted, and it is more labor-saving when the T-shaped frame is lifted by the driving mechanism. When the oxygen generator is retracted, the mobile wheel support is rotated to the Figure 4 state, which can avoid the mobile wheel from falling due to gravity. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of a portable oxygen generator in a movable state. Figure 2 This is a schematic diagram of the movable wheel mechanism in the movable state of the present invention; Figure 3 This is an exploded diagram of an invention of a portable oxygen concentrator; Figure 4 This is a schematic diagram of the moving wheel mechanism in the present invention in a fixed state; Figure 5 This is a schematic diagram of the shell structure of a portable oxygen generator according to the present invention; Figure 6 This is an exploded view of the driving mechanism in this invention; Figure 7 This is an exploded view of the driving mechanism in this invention; Figure 8 This is an exploded view of the T-shaped frame, pressing block, and pressing component in this invention; Figure 9 This is a schematic diagram of the outer structure of the T-shaped frame in this invention; Figure 10 This is a schematic diagram of the inner structure of the T-shaped frame in this invention.

[0023] 1. Oxygen concentrator; 2. Caster support; 3. Caster; 4. T-shaped frame; 5. Fixed column; 6. Strip groove; 7. U-shaped handrail; 8. Rack; 9. Drive gear; 10. Shaft; 11. Crank handle; 12. Storage slot; 13. Slot; 14. Slider; 15. Stop block; 16. Magnetic block; 17. Return spring; 18. Telescopic limit block; 19. Telescopic groove; 20. Limit groove; 21. Pressing block; 22. Through hole; 23. Slide groove; 24. Recess; 25. Cover; 26. Connecting column; 27. Tension spring; 28. Pressing component. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0025] Embodiments of the present invention: such as Figures 1-10 As shown, a portable oxygen concentrator includes an oxygen concentrator 1 and a moving wheel mechanism disposed on opposite side walls of the oxygen concentrator 1.

[0026] like Figure 2 , 3As shown in Figure 4, the specific structure of the moving wheel mechanism is as follows: The moving wheel mechanism includes a T-shaped frame 4 that is slidably mounted on the side wall of the oxygen concentrator 1, two moving wheel supports 2 symmetrically mounted on both sides of the T-shaped frame 4, and a moving wheel 3 mounted at the bottom of the moving wheel support 2. The middle part of the moving wheel support 2 is rotatably connected to the side wall of the oxygen concentrator 1 through a pin. The horizontal part of the T-shaped frame 4 faces downward and the vertical part faces upward, and the two ends of the horizontal part are slidably connected to the top of the two moving wheel supports 2 respectively. Specifically, the two ends of the horizontal part of the T-shaped frame 4 are provided with fixed columns 5, and the end of the moving wheel support 2 away from the moving wheel 3 is provided with a strip groove 6. The fixed column 5 is slidably mounted in the strip groove 6. Through the above structure, the T-shaped frame 4 can drive the fixed column 5 to move up and down, which can push the moving wheel support 2 to rotate, so that the moving wheel 3 contacts or leaves the ground. like Figure 2 , 3 As shown in Figure 4, a U-shaped handrail 7 is provided above the oxygen concentrator 1. The tops of the two T-shaped frames 4 are fixedly connected to the two ends of the U-shaped handrail 7 respectively, so as to ensure that the two T-shaped frames 4 rise and fall synchronously and facilitate the movement of the oxygen concentrator 1. The top of the oxygen concentrator 1 is provided with a groove corresponding to the U-shaped handrail 7, and the U-shaped handrail 7 can be retracted into the groove to reduce the protruding structure on the surface of the oxygen concentrator.

[0027] like Figure 2 As shown in the figure, the oxygen generator 1 is equipped with a drive mechanism for moving the T-shaped frame 4 up and down, and the side wall of the oxygen generator 1 is equipped with a locking mechanism for fixing the T-shaped frame 4.

[0028] like Figure 1 , 2 As shown in Figure 4, the oxygen concentrator 1 has a sliding groove 23 on its side wall corresponding to the vertical part of the T-shaped frame 4, and the T-shaped frame 4 can slide smoothly up and down in the sliding groove 23. The bottom of the side wall of the oxygen concentrator 1 has a recess 24, which is connected to the bottom end of the sliding groove 23. The horizontal part of the T-shaped frame 4, the moving wheel bracket 2, and the moving wheel 3 are located in the recess 24. The bottom of the side wall of the oxygen concentrator 1 has a cover 25 corresponding to the recess 24, and the cover 25 is detachably connected to the oxygen concentrator 1. When it is necessary to inspect or maintain the moving wheel mechanism, the cover 25 can be easily removed.

[0029] like Figure 6 , 7 As shown in the figure, the specific structure of the drive mechanism is as follows: a rack 8 is provided on the vertical side wall of the T-shaped frame 4. The drive mechanism includes a drive gear 9 meshing with the rack 8, a rotating shaft 10 for driving the drive gear 9 to rotate, and a crank handle 11. Two opposing drive gears 9 are connected by the same rotating shaft 10, and the crank handle 11 is installed at one end of the rotating shaft 10. Each T-shaped frame 4 is provided with two symmetrical racks 8, corresponding to two sets of drive mechanisms. The crank handles 11 of the two sets of drive mechanisms are respectively set on both sides of the oxygen concentrator 1, so that the operator can turn the crank handle 11 from different directions to drive the T-shaped frame 4 to move up and down.

[0030] likeFigure 1 , 2 As shown in Figures 6 and 7, the oxygen concentrator 1 has a storage groove 12 on its side wall corresponding to the crank handle 11, and a slot 13 at the end of the rotating shaft 10. A slider 14 is provided on the central shaft of the crank handle 11, and the slider 14 slides into the slot 13. The slider 14 has a regular polygonal cross-section (preferably a regular hexagon) to ensure that the crank handle 11 can smoothly drive the rotating shaft 10 to rotate. The diameter of the central shaft of the crank handle 11 is less than or equal to the diameter of the inscribed circle corresponding to the cross-section of the slider 14. A stop block 15 is provided at the outer end of the slot 13, and the inner diameter of the stop block 15 matches the central shaft of the crank handle 11. The stop block 15 can limit the sliding of the crank handle 11. Both the inner end of the slider 14 and the inner end of the slot 13 are provided with mutually attracting magnetic blocks 16. When the crank handle 11 is not in use, it can be pushed into the storage groove 12, and under the attraction of the magnetic blocks 16, the crank handle 11 can be stably stored in the storage groove 12.

[0031] like Figure 3 , 8 As shown in Figures 9 and 10, the locking mechanism has the following specific structure: The locking mechanism includes a return spring 17 and a telescopic limiting block 18. A telescopic groove 19 is provided on the side wall of the oxygen generator 1. One end of the return spring 17 and the telescopic limiting block 18 is located within the telescopic groove 19. Both ends of the return spring 17 are fixedly connected to the ends of the telescopic groove 19 and the telescopic limiting block 18, respectively. A limiting groove 20 is provided on the T-shaped frame 4 corresponding to the locking mechanism. The outer end of the telescopic limiting block 18 can extend into the limiting groove 20. A pressing block 21 is slidably provided within the limiting groove 20. A through hole 22 is provided on the T-shaped frame 4, connecting the limiting groove 20 and the outer side of the T-shaped frame 4. A pressing element 22 is provided at the outer end of the pressing block 21. The outer end of the pressing element 28 is always within the sliding groove 23. This design facilitates the operator pressing the pressing element 28 to disengage the telescopic limiting block 18 from the limiting groove 20, thereby releasing the lock on the T-shaped frame 4.

[0032] like Figure 2 , 3 As shown in Figure 4, a connecting post 26 is welded to the outer wall of the lower half of the movable wheel bracket 2. A tension spring 27 is provided between the connecting posts 26 on the two movable wheel brackets 2. The two ends of the tension spring 27 are detachably connected to the two connecting posts 26 through hooks, so that the tension spring 27 can be easily replaced when it is damaged. The tension spring 27 can provide a pulling force to the lower half of the movable wheel bracket 2 towards the middle, assisting the movable wheel 3 to return to its original position (i.e., the movable wheel 3 supports the ground) while preventing the movable wheel 3 from falling due to gravity when it is in the extended or retracted state.

[0033] Working process and principle: The portable oxygen generator in use, when need to move oxygen generator 1, the operator rotates the handle 11, through the meshing transmission of driving gear 9 and rack 8, drive T-shaped frame 4 upward, the horizontal part of T-shaped frame 4 through fixed column 5 in the strip slot 6 in the moving wheel support 2 sliding, push moving wheel support 2 rotation around the middle pin shaft, make moving wheel 3 contact ground and prop up oxygen generator 1, T-shaped frame 4 rises to the position after telescopic limit block 18 under the action of reset spring 17 in the limit slot 20, fixed T-shaped frame 4, the operator can push oxygen generator 1 through U-shaped handrail 7 and move.When not need to move oxygen generator 1, press presser 28, make press block 21 push telescopic limit block 18 and reset spring 17 and exit limit slot 20, under the action of gravity, make two moving wheel 3 away from each other and separate, until the bottom of oxygen generator 1 contact ground, in order to place more stable oxygen generator 1, avoid ambulance jolt process moving wheel support 2 under the action of tension spring 27 tension, lead to oxygen generator 1 off ground and happen displacement, we can continue to press T-shaped frame 4 top, drive moving wheel support 2 continue to rotate, until moving wheel 3 upward, at this time tension spring 27 will moving wheel support 2 tension, thus avoid moving wheel 3 due to gravity fall.

Claims

1. A portable oxygen generator, characterized by comprising: The utility model provides an oxygen generator (1) and the mobile wheel mechanism of setting on the opposite two side walls of oxygen generator (1), the mobile wheel mechanism includes the T-shaped frame (4) of sliding down setting on the side wall of oxygen generator (1), two mobile wheel supports (2) of setting in the two sides of T-shaped frame (4) symmetry and the mobile wheel (3) of installing in the bottom end of mobile wheel support (2), the middle part of mobile wheel support (2) is rotatably connected with the side wall of oxygen generator (1), the horizontal part of T-shaped frame (4) is downward, the vertical part is upward, and the both ends of horizontal part are slidably connected with the top end of two mobile wheel supports (2) respectively, the top of two T-shaped frames (4) is fixedly connected with the both ends of U-shaped handrail (7) respectively, makes two T-shaped frames (4) synchronous lifting, and the drive mechanism for driving T-shaped frame (4) moves up and down is equipped in oxygen generator (1), the side wall of oxygen generator (1) is equipped with the locking mechanism for fixing T-shaped frame (4).

2. The portable oxygen generator of claim 1, wherein: The both ends of the horizontal part of T-shaped frame (4) are provided with fixed columns (5), one end of the mobile wheel support (2) away from the mobile wheel (3) is provided with a strip-shaped groove (6), and the fixed column (5) is slidably arranged in the strip-shaped groove (6).

3. The portable oxygen generator of claim 1, wherein: The vertical part of T-shaped frame (4) is provided with a sliding groove (23) on the side wall of oxygen generator (1), a recess (24) is provided on the bottom of the side wall of oxygen generator (1), the recess (24) is communicated with the bottom end of the sliding groove (23), the horizontal part of T-shaped frame (4), the mobile wheel support (2) and the mobile wheel (3) are located in the recess (24), a cover (25) is provided on the bottom of the side wall of oxygen generator (1) corresponding to the recess (24), and the cover (25) is detachably connected with the oxygen generator (1).

4. The portable oxygen generator of claim 1, wherein: The vertical part of T-shaped frame (4) is provided with a rack (8), the drive mechanism includes a drive gear (9) engaged with the rack (8), a rotating shaft (10) for driving the drive gear (9) to rotate and a crank (11), the two drive gears (9) are connected by the same rotating shaft (10), the crank (11) is installed at one end of the rotating shaft (10), each T-shaped frame (4) is provided with two symmetrical racks (8) and corresponds to two groups of drive mechanisms, and the cranks (11) of the two groups of drive mechanisms are arranged on the two sides of the oxygen generator (1).

5. The portable oxygen generator of claim 4, wherein, The side wall of oxygen generator (1) is provided with a receiving groove (12) corresponding to the crank (11), the end of the rotating shaft (10) is provided with a slot (13), the central shaft of the crank (11) is provided with a sliding block (14), the sliding block (14) is slidably matched with the slot (13) and has a regular polygonal structure in cross section.

6. The portable oxygen generator of claim 5, wherein, The diameter of the central shaft of the crank (11) is less than or equal to the diameter of the inscribed circle corresponding to the cross section of the sliding block (14), the outer end of the slot (13) is provided with a stop block (15), and the inner diameter of the stop block (15) matches the central shaft of the crank (11).

7. The portable oxygen generator of claim 5, wherein, The inner end of the sliding block (14) and the inner end of the slot (13) are provided with magnetic attraction blocks (16) that attract each other.

8. The portable oxygen generator of claim 2, wherein, The locking mechanism comprises a reset spring (17) and a telescopic limiting block (18), a telescopic groove (19) is arranged on the side wall of the oxygen generator (1), one end of the reset spring (17) and the telescopic limiting block (18) is located in the telescopic groove (19), and the two ends of the reset spring (17) are fixedly connected with the telescopic groove (19) and the end of the telescopic limiting block (18) respectively.

9. The portable oxygen generator of claim 8, wherein, A limiting groove (20) is arranged on the T-shaped frame (4) corresponding to the locking mechanism, the outer end of the telescopic limiting block (18) can extend into the limiting groove (20), a pressing block (21) is slidably arranged in the limiting groove (20), a through hole (22) is arranged on the T-shaped frame (4), the through hole (22) is communicated with the limiting groove (20) and the outside of the T-shaped frame (4), the outer end of the pressing block (21) is provided with a pressing piece (28), and the outer end of the pressing piece (28) is always in the sliding groove (23).

10. The portable oxygen generator of claim 1, wherein, A connecting column (26) is arranged on the outer side wall of the lower half of the moving wheel support (2), a tension spring (27) is arranged between the connecting columns (26) on the two moving wheel supports (2), and the tension spring (27) is detachably connected with the connecting column (26).

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