Laminar flow bed

Abstract

The invention belongs to the technical field of medical equipment, and provides a laminar flow bed which comprises a bed body, an air filtering device and a bed curtain which are arranged on the bed body, and four first guide rollers rotationally connected with the bed body; the synchronizing element is annular, and the synchronizing element is arranged on the four first guide rollers in a sleeving mode and can rotate along with rotation of the first guide rollers; the winding and unwinding device is arranged on the bed body, and the winding and unwinding device is used for winding the used bed curtain and synchronously releasing the unused bed curtain; wherein first connecting elements are arranged on the two sides of the bed curtain, second connecting elements are arranged on the outer sides of the synchronizing elements, and the two sides of the bed curtain can be in coupling connection with the two synchronizing elements through the first connecting elements and the second connecting elements respectively. The laminar flow bed provided by the invention is simple in structure, and the curtain can be replaced on line.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a laminar flow bed. Background Art

[0002] Laminar flow bed, also called single-person sterile room, is a medical device used to reduce the infection rate of susceptible populations and protect immunocompromised patients. It is widely used in hematology, oncology, etc.

[0003] The laminar flow bed includes a bed body, an air filter device and a bed curtain arranged on the bed body. During use, the bacteria and viruses adhering to the bed curtain will increase as the patient stays in the laminar flow bed for a longer time. Therefore, after a period of use, the bed curtain needs to be replaced to facilitate cleaning and disinfection.

[0004] However, the laminar flow bed in the prior art cannot replace the bed curtain online, resulting in the patient in the laminar flow bed being exposed to the air during the process of replacing the bed curtain, increasing the risk of infection for the patient. Summary of the invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide a laminar flow bed to solve or alleviate the above-mentioned technical problems existing in the prior art.

[0006] In order to achieve the above object, the present invention provides a laminar flow bed, comprising a bed body and an air filter device and a bed curtain arranged on the bed body, and further comprising:

[0007] A first guide roller, whose axis is arranged in the longitudinal direction, the first guide roller is rotatably connected to the bed body, four first guide rollers are arranged, and the four first guide rollers are respectively arranged at four corners of the bed body;

[0008] a synchronization element in an annular shape, which is sleeved on the four first guide rollers and can rotate with the rotation of the first guide rollers, wherein two synchronization elements are provided, one of which is sleeved on the first ends of the four first guide rollers, and the other synchronization element is sleeved on the second ends of the four first guide rollers; and

[0009] A retractable device, which is arranged on the bed body, and is used to retract the used bed curtains and simultaneously release the unused bed curtains;

[0010] Wherein, first connecting elements are arranged on both sides of the bed curtain, and second connecting elements are arranged on the outer side of the synchronization element. Both sides of the bed curtain can be coupled and connected with the two synchronization elements through the first connecting element and the second connecting element respectively.

[0011] Furthermore, the retractable device comprises:

[0012] An installation box is arranged at one end of the bed, and the installation box has a first chamber and a second chamber arranged in parallel;

[0013] A winding roller, the axis of which is arranged in the longitudinal direction, the winding roller is rotatably arranged in the first chamber, and the winding roller is detachably connected to the bed;

[0014] a release roller, the axis of which is arranged in the longitudinal direction, the release roller is rotatably arranged in the second chamber, and the release roller is detachably connected to the bed; and

[0015] The first driving structure is arranged on the bed, and the first driving structure is drivingly connected to the winding roller to drive the winding roller to rotate.

[0016] Furthermore, it also includes a clamping device, wherein two clamping devices are provided, and the two clamping devices are respectively provided in the first chamber and the second chamber, and the clamping device includes:

[0017] A fixing seat, which is fixedly connected to the installation box;

[0018] A sliding seat, which is slidably connected to the installation box, and the sliding seat and the fixed seat are arranged at intervals in the longitudinal direction;

[0019] Two connecting shafts are provided, one of which is provided on the fixed seat and is rotatably connected to the fixed seat, and the other connecting shaft is provided on the sliding seat and is rotatably connected to the sliding seat;

[0020] A screw rod, whose axis is arranged in the longitudinal direction, the screw rod is rotatably connected to the installation box, the sliding seat is sleeved on the screw rod, and when the screw rod rotates, the sliding seat can be driven to move toward or away from the fixed seat; and

[0021] A third motor, whose power output shaft is drivingly connected to the screw to drive the screw to rotate;

[0022] Among them, a first connecting part is provided at both ends of the release roller and the winding roller, and a second connecting part matching the first connecting part is correspondingly provided at one end of the connecting shaft, and the two ends of the release roller and the winding roller are coupled and connected with the corresponding connecting shaft through the first connecting part and the second connecting part respectively.

[0023] Furthermore, it also includes a limiting device, wherein two limiting devices are provided, and the two limiting devices are respectively provided at two ends of the second chamber, and the limiting device includes:

[0024] A connecting arm movably connected to the bed body;

[0025] a limiting roller, which is arranged on the connecting arm and rotatably connected with the connecting arm, and the outer side wall of the limiting roller is provided with a first limiting protrusion, and the outer side of the bed curtain is correspondingly provided with a limiting groove matched with the first limiting protrusion; and

[0026] The first elastic element has a first end connected to the connecting arm and a second end connected to the bed body. In a natural state, the first elastic element applies elastic force to the connecting arm so that the connecting arm can apply force to the bed curtain through the limiting roller.

[0027] Furthermore, it also includes a curtain raising device, which is arranged in the first chamber and includes:

[0028] a curtain-raising blade, the length direction of which is arranged in the longitudinal direction, and the curtain-raising blade is slidably connected to the installation box so that the curtain-raising blade can switch between a first position and a second position in the transverse direction; and

[0029] The second driving structure is transmission-connected with the curtain-raising blade to drive the curtain-raising blade to reciprocate between the first position and the second position.

[0030] Furthermore, it also includes a clamping device, wherein two clamping devices are provided, and the two clamping devices are respectively provided in the first chamber and the second chamber, and the clamping device:

[0031] A fixing plate, which is arranged on one side of the installation box, and the fixing plate is fixedly connected to the bed body;

[0032] A clamping plate, which is arranged on the outer side of the fixing plate, and the clamping plate is slidably connected to the bed body so that the clamping plate can be reciprocated between a clamping position and a loosening position; and

[0033] The third driving structure is connected to the clamping plate in transmission. When clamping, the third driving structure drives the clamping plate to a clamping position, and the clamping plate cooperates with the fixed plate to clamp the bed curtain; when loosening, the third driving structure drives the clamping plate to a loosening position, and the clamping plate separates from the fixed plate to loosen the bed curtain.

[0034] Furthermore, the third driving structure includes:

[0035] A second elastic element, a first end of which is connected to the bed body and a second end of which is connected to the clamping plate, and in a natural state, the second elastic element applies elastic force to the clamping plate so that the clamping plate has a tendency to move from a loose position to a clamping position;

[0036] A first magnet, which is fixedly disposed on the bed; and

[0037] A second magnet, which is fixedly disposed on the clamping plate and corresponds to the first magnet;

[0038] At least one of the first magnet and the second magnet is an electromagnet, and the magnetism of the first magnet and the second magnet on opposite sides is different, so that when the electromagnet is energized, a magnetic attraction force can be generated between the first magnet and the second magnet.

[0039] Beneficial effects of the present invention:

[0040] The laminar flow bed provided in this embodiment is provided with a first guide roller, a synchronization element and a retracting device. During use, when the retracting device is retracting the used bed curtain, a force is applied to the release end of the retracting device through the synchronization element and the unused bed curtain, so that the retracting device synchronously releases the unused bed curtain, thereby achieving the purpose of online replacement of the bed curtain, and further achieving the purpose of reducing the risk of infection for patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0042] Figure 1 A three-dimensional view of a laminar flow bed provided by an embodiment of the present invention in a first direction;

[0043] Figure 2 for Figure 1 A perspective view of the laminar flow bed in a second direction is shown;

[0044] Figure 3 for Figure 1 The laminar flow bed is shown as a three-dimensional view in a second direction after the box cover is hidden;

[0045] Figure 4 for Figure 3 An enlarged view of section A is shown;

[0046] Figure 5 for Figure 3 An enlarged view of section B is shown;

[0047] Figure 6 for Figure 3 An enlarged view of section C is shown;

[0048] Figure 7 for Figure 3 An enlarged view of section D is shown;

[0049] Figure 8 for Figure 3 A cross-sectional view in the EE direction is shown;

[0050] Fig. 9 for Figure 8 An enlarged view of section F is shown;

[0051] Fig.10 for Fig. 9 An enlarged view of section G is shown;

[0052] Fig.11 for Fig. 9 An enlarged view of section H is shown;

[0053] Fig.12 for Figure 1 A combined three-dimensional view of a laminar flow bed body, a curtain, a pressing device, a limiting device and a curtain raising device;

[0054] Fig.13 for Fig.12 An enlarged view of section I is shown;

[0055] Fig.14 for Fig.12 An enlarged view of section J is shown;

[0056] Fig.15 for Figure 1 A combined three-dimensional view of a laminar flow bed body, a first guide roller, a synchronization element, an air filter device, and a second guide roller;

[0057] Fig.16 for Fig.15 An enlarged view of section K is shown;

[0058] Fig.17 for Figure 1 A perspective view of the bed curtain of the laminar flow bed is shown;

[0059] Fig.18 for Fig.17 An enlarged view of the L portion is shown;

[0060] Fig.19 for Figure 1 A three-dimensional view of a curtain-raising device for a laminar bed is shown;

[0061] Fig. 20 for Figure 1 The illustrated diagram is an exploded perspective view of the combination of the winding roller, the release roller and the clamping device of the laminar flow bed.

[0062] Reference numerals:

[0063] 100, bed body; 200, air filter device; 300, bed curtain; 310, first connecting element; 301, limiting groove; 410, first guide roller; 420, synchronization element; 421, second connecting element; 510, installation box; 511, box body; 512, box cover; 502, first chamber; 503, second chamber; 520, winding roller; 530, release roller; 501, first connecting part; 541, first motor; 550, second guide roller; 551, second limiting protrusion; 560, third connecting element; 610, fixed seat; 620, sliding seat; 630, connecting shaft; 631, second connecting part; 640, screw; 650, third motor; 710, connecting arm; 720, limiting roller; 721, first limiting protrusion; 810, curtain lifting blade; 820, electric push rod; 910, fixed plate; 920, clamping plate; 931, second elastic element; 932, first magnet; 933, second magnet. DETAILED DESCRIPTION

[0064] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0065] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0066] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0067] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0068] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0070] like Figure 1 As shown, the present invention provides a laminar flow bed, including a bed body 100, an air filter device 200 is arranged on the top of the bed body 100, and a bed curtain 300 is arranged on the periphery of the bed body 100, and the bed curtain 300 is made of a flexible transparent material. These are all prior arts, and will not be described in detail here.

[0071] like Figure 3 , 4 As shown in Figures 5, 6, 7, 15, 16, 17 and 18, the laminar flow bed provided by the present invention further includes a first guide roller 410, a synchronization element 420 and a retracting device.

[0072] The axis of the first guide roller 410 is arranged along the longitudinal direction, and the first guide roller 410 is rotatably connected to the bed 100. Four first guide rollers 410 are provided, and the four first guide rollers 410 are respectively arranged at the four corners of the bed 100. The synchronization element 420 is annular, and two synchronization elements 420 are provided, one of which is sleeved on the first end of the four first guide rollers 410, and the other synchronization element 420 is sleeved on the second end of the four first guide rollers 410, and the synchronization element 420 can rotate with the rotation of the first guide roller 410. Specifically, the synchronization element 420 can be a synchronous belt, a transmission belt, etc., and no excessive restrictions are made here.

[0073] The retracting and releasing device is disposed on the bed body 100 , and is used to roll up the used bed curtains and simultaneously release the unused bed curtains.

[0074] The first connecting element 310 is provided on both sides of the bed curtain 300, and the second connecting element 421 is provided on the outer side of the synchronization element 420. The two sides of the bed curtain 300 can be coupled and connected with the two synchronization elements 420 through the first connecting element 310 and the second connecting element 421. Specifically, the first connecting element 310 and the second connecting element 421 can be a sub-sticker and a mother-sticker of Velcro, respectively, and the first connecting element 310 and the second connecting element 421 can also be flexible magnets.

[0075] When in use, one end of the used bed curtain is connected to the retracted end of the retracting device, and the first connecting elements 310 on both sides of the free end of the unused bed curtain retracted in the retracting device are connected to the two second connecting elements 421 respectively.

[0076] The retractable device is started, and the retractable end of the retractable device retracts the used bed curtain, and the used bed curtain synchronously pulls the synchronization element 420 to rotate, and the synchronization element 420 synchronously pulls the unused bed curtain to move, so that the retractable device synchronously releases the unused bed curtain, thereby achieving the purpose of online replacement of the bed curtain 300, and in the process of replacing the bed curtain 300, the patient on the laminar flow bed will not be exposed to the air, thereby achieving the purpose of reducing the risk of patient infection.

[0077] The laminar flow bed provided in this embodiment is provided with a first guide roller 410, a synchronization element 420 and a retracting device. During use, when the retracting device is retracting the used bed curtain, a force is applied to the release end of the retracting device through the synchronization element 420 and the unused bed curtain, so that the retracting device synchronously releases the unused bed curtain, thereby achieving the purpose of online replacement of the bed curtain 300, and further achieving the purpose of reducing the risk of infection for patients.

[0078] like Figure 2-7 As shown, the retracting and unretracting device includes a mounting box 510, a reeling roller 520, a releasing roller 530 and a first driving structure.

[0079] The installation box 510 is fixedly installed at one end of the bed 100, and the installation box 510 has a first chamber 502 and a second chamber 503 arranged in parallel. Specifically, the installation box 510 includes a box body 511 and a box cover 512 arranged on a side of the box body 511 away from the bed 100 and detachably arranged with the box body 511. The axis of the winding roller 520 is arranged along the longitudinal direction, and the winding roller 520 is rotatably arranged in the first chamber 502, and the winding roller 520 is detachably connected to the bed 100.

[0080] The axis of the release roller 530 is arranged longitudinally, the release roller 530 is rotatably arranged in the second chamber 503, and the release roller 530 is detachably connected to the bed 100. The first driving structure is arranged on the bed 100, and the first driving structure is transmission-connected with the winding roller 520 to drive the winding roller 520 to rotate.

[0081] When in use, one end of the used bed curtain is connected to the winding roller 520 , and the first connecting elements 310 on both sides of the free end of the unused bed curtain wound on the winding roller 520 are connected to the second connecting elements 421 outside the synchronization element 420 .

[0082] The first driving structure is started, and the first driving structure drives the winding roller 520 to rotate to wind up the used bed curtain. The used bed curtain synchronously pulls the synchronization element 420 to rotate. The synchronization element 420 applies a force to the release roller 530 through the unused bed curtain to drive the release roller 530 to rotate, so that the release roller 530 synchronously releases the unused bed curtain.

[0083] The retracting and releasing device provided in this embodiment has a simple structure and a reasonable design. It can automatically retract used bed curtains and release unused bed curtains. It is easy to operate and can release unused bed curtains simultaneously while retracting used bed curtains, thereby achieving higher laying accuracy.

[0084] Preferably, third connecting elements 560 matching with the first connecting element 310 are provided at both ends of the winding roller 520 .

[0085] like Figure 3 , 4 , 5, 6, 7 and 20, in this embodiment, the laminar flow bed further comprises a clamping device, and two clamping devices are provided, and the two clamping devices are respectively arranged in the first chamber 502 and the second chamber 503 to respectively clamp the winding roller 520 and the release roller 530. The clamping device comprises a fixed seat 610, a sliding seat 620, a connecting shaft 630, a screw 640 and a third motor 650.

[0086] The fixed seat 610 is fixedly connected to the installation box 510, the sliding seat 620 is slidably connected to the installation box 510, and the sliding seat 620 and the fixed seat 610 are arranged at intervals along the longitudinal direction. Two connecting shafts 630 are provided, one of which is provided on the fixed seat 610 and is rotatably connected to the fixed seat 610, and the other connecting shaft 630 is provided on the sliding seat 620 and is rotatably connected to the sliding seat 620.

[0087] The axis of the screw rod 640 is arranged in the longitudinal direction, the screw rod 640 is rotatably connected to the installation box 510, the sliding seat 620 is sleeved on the screw rod 640, and when the screw rod 640 rotates, it can drive the sliding seat 620 to move in a direction close to or away from the fixed seat 610. Specifically, when the screw rod 640 rotates in the positive direction, the screw rod 640 drives the sliding seat 620 to move in a direction close to the fixed seat 610; when the screw rod 640 rotates in the reverse direction, the screw rod 640 drives the sliding seat 620 to move in a direction away from the fixed seat 610. The third motor 650 is fixedly arranged in the installation box 510. The power output shaft of the third motor 650 is transmission-connected with the screw rod 640 to drive the screw rod 640 to rotate.

[0088] The first connection part 501 is disposed at both ends of the release roller 530 and the winding roller 520, and the second connection part 631 matching the first connection part 501 is disposed at one end of the connecting shaft 630. The two ends of the release roller 530 and the winding roller 520 are coupled and connected to the corresponding connecting shaft 630 through the first connection part 501 and the second connection part 631. For example, the first connection part 501 can be a non-circular connecting jack, and the second connection part 631 is a connecting block matching therewith; the first connection part 501 is a first meshing tooth, and the second connection part 631 is a second meshing tooth matching therewith.

[0089] When installing the winding roller 520 or the release roller 530, the corresponding third motor 650 drives the corresponding screw 640 to rotate in the opposite direction to make the sliding seat 620 move away from the fixed seat 610, so that the distance between the two connecting shafts 630 is greater than or equal to the length of the winding roller 520 or the release roller 530; then the release roller 530 or the winding roller 520 is placed between the two connecting shafts 630; then the third motor 650 drives the screw 640 to rotate in the positive direction to make the sliding seat 620 move towards the fixed seat 610, so that the first connecting part 501 and the second connecting part 631 cooperate with each other, thereby achieving the purpose of installing the release roller 530 or the winding roller 520.

[0090] When removing the release roller 530 or the winding roller 520, the third motor 650 drives the corresponding screw 640 to rotate in the opposite direction to move the sliding seat 620 away from the fixed seat 610, so that the distance between the two connecting shafts 630 is greater than or equal to the length of the winding roller 520 or the release roller 530, thereby achieving the purpose of being able to remove the release roller 530 or the winding roller 520.

[0091] In this embodiment, by providing a clamping device, the purpose of facilitating the disassembly and installation of the release roller 530 or the winding roller 520 is achieved, and the operation is convenient.

[0092] like Figure 4 As shown, the first driving structure includes a first motor 541 .

[0093] The first motor 541 is fixedly installed in the first chamber 502. The power output shaft of the first motor 541 is transmission-connected with the corresponding connecting shaft 630. Specifically, the power output shaft of the first motor 541 is transmission-connected with the connecting shaft 630, and the power output shaft of the first motor 541 is transmission-connected with the connecting shaft 630, and the power output shaft of the first motor 541 is transmission-connected with the connecting shaft 630 through a gear structure, for example: the power output shaft of the first motor 541 is coaxially sleeved with a first gear, and one end of the corresponding connecting shaft 630 is coaxially sleeved with a second gear, and the first gear is meshed with the second gear. If the first motor 541 is transmission-connected with the connecting shaft 630 arranged on the sliding seat 620, the second gear is a long gear, so that the first gear can always be meshed with the second gear during the movement of the sliding seat 620.

[0094] In this embodiment, the first motor 541 is transmission-connected to the connecting shaft 630 disposed on the fixing base 610 , for example, through a gear structure, a transmission belt structure, a transmission chain structure, a coupling, and the like.

[0095] When in use, the first motor 541 drives the first gear to rotate, thereby driving the second gear to rotate through the first gear, and then driving the corresponding connecting shaft 630 to rotate through the second gear, and the connecting shaft 630 drives the winding roller 520 to rotate, thereby achieving the purpose of rolling up the bed curtain 300.

[0096] In this embodiment, the first driving structure has a simple structure, a reasonable design, and is easy to operate.

[0097] like Figure 3 , 7 As shown in FIGS. 12 and 14 , in this embodiment, the laminar flow bed further comprises a limiting device, and two limiting devices are provided, and the two limiting devices are respectively provided at two ends of the second chamber 503. The limiting device comprises a connecting arm 710, a limiting roller 720 and a first elastic element.

[0098] The connecting arm 710 is movably connected to the bed body 100. The connecting arm 710 can be slidably connected to the bed body 100, or can be hinged to the bed body 100. In this embodiment, the first end of the connecting arm 710 is hinged to the bed body 100. The limiting roller 720 is arranged on the connecting arm 710 and is rotatably connected to the connecting arm 710, and the outer side wall of the limiting roller 720 is provided with a first limiting protrusion 721, and the outer side of the bed curtain 300 is correspondingly provided with a limiting groove 301 that matches the first limiting protrusion 721. The first end of the first elastic element is connected to the connecting arm 710, and the second end is connected to the bed body 100, and in the natural state, the first elastic member applies elastic force to the connecting arm 710, so that the connecting arm 710 can apply force to the bed curtain 300 through the limiting roller 720, so that the first connecting element 310 and the second connecting element 421 can be better fitted and connected. Specifically, the first elastic element may be a torsion spring, a spiral torsion spring, or a tension spring, etc. In this embodiment, the first elastic element is a spiral torsion spring.

[0099] When in use, in the process of releasing the unused bed curtain, the first limiting protrusion 721 cooperates with the limiting groove 301, thereby achieving the purpose of reducing the possibility of the bed curtain 300 being offset in the process of releasing the bed curtain 300. At the same time, the first elastic element applies elastic force to the connecting arm 710, and the connecting arm 710 applies force to the series connection through the limiting roller 720, so that the first connecting element 310 and the second connecting element 421 can be better fitted and connected, thereby achieving the purpose of improving the reliability and stability of the connection between the first connecting element 310 and the second connecting element 421.

[0100] In this embodiment, by setting a limit device, the bed curtain 300 can be prevented from being skewed during the replacement process. A force can also be applied to the bed curtain 300 so that the first connecting element 310 and the second connecting element 421 can fit and connect better. At the same time, the bed curtain 300300 can also be guided.

[0101] like Fig.12 , 13 As shown in FIG. 19 , in this embodiment, the laminar flow bed further comprises a curtain raising device, which is disposed in the first chamber 502. The curtain raising device comprises a curtain raising blade 810 and a second driving structure.

[0102] The length direction of the curtain raising blade 810 is arranged in the longitudinal direction, and the curtain raising blade 810 is slidably connected to the installation box 510, so that the curtain raising blade 810 can switch between the first position and the second position in the transverse direction. The second driving structure is transmission-connected to the curtain raising blade 810 to drive the curtain raising blade 810 to reciprocate between the first position and the second position.

[0103] When the bed curtain 300 needs to be replaced, the second driving structure drives the curtain blade 810 from the first position to the second position, thereby applying a force to the connection between the first connecting element 310 and the second connecting element 421 to separate the first connecting element 310 and the second connecting element 421. When the bed curtain 300 does not need to be replaced, the second driving structure places the curtain blade 810 in the first position.

[0104] In this embodiment, by providing a curtain raising device, when the bed curtain 300 is replaced, the first connecting element 310 and the second connecting element 421 at one end of the used bed curtain can be automatically separated without manual separation by medical staff, which makes the operation more convenient.

[0105] like Fig.13 , 19 As shown, the second driving structure includes an electric push rod 820.

[0106] There are two electric push rods 820 , which are fixed in the installation box 510 , and the power output shafts of the electric push rods 820 are fixedly connected to the curtain-raising blade 810 .

[0107] like Figure 8-11 As shown, in this embodiment, the laminar flow bed also includes a clamping device. Two clamping devices are provided. The two clamping devices are respectively arranged in the first chamber 502 or the second chamber 503. The clamping device includes a fixing plate 910, a clamping plate 920 and a third driving structure.

[0108] The fixing plate 910 is arranged on one side of the installation box 510, and the fixing plate 910 is fixedly connected to the bed body 100. The clamping plate 920 is arranged on the outer side of the fixing plate 910, and the clamping plate 920 is slidably connected to the bed body 100, so that the clamping plate 920 can switch back and forth between the clamping position and the loosening position. The third driving structure is in transmission connection with the clamping plate 920. When clamping, the third driving structure drives the clamping plate 920 to the clamping position, and the clamping plate 920 cooperates with the fixing plate 910 to clamp the bed curtain 300; when loosening, the third driving structure drives the clamping plate 920 to the loosening position, and the clamping plate 920 separates from the fixing plate 910 to loosen the bed curtain 300.

[0109] During use, during normal use, the third driving structure drives the clamping plate 920 to the clamping position, and the clamping plate 920 cooperates with the fixing plate 910 to clamp the bed curtain 300, which can not only fix the bed curtain 300, but also strengthen the sealing of both ends of the bed curtain 300.

[0110] When the bed curtain 300 needs to be replaced, the third driving structure drives the clamping plate 920 to a released position, so that the bed curtain 300 can smoothly pass between the clamping plate 920 and the fixing plate 910 .

[0111] like Figure 8 , 9 As shown in FIG. 11 , in this embodiment, the third driving structure includes a second elastic element 931 , a first magnet 932 and a second magnet 933 .

[0112] The first end of the second elastic element 931 is connected to the bed 100, and the second end is connected to the clamping plate 920. In a natural state, the second elastic element 931 applies elastic force to the clamping plate 920, so that the clamping plate 920 has a tendency to move from a loose position to a clamping position. Specifically, the second elastic element 931 can be a rubber spring, a gas spring, a hydraulic spring, a spring, etc. In this embodiment, the second elastic element 931 is a spring.

[0113] The first magnet 932 is fixedly disposed on the bed 100, and the second magnet 933 is fixedly disposed on the clamping plate 920 and corresponds to the first magnet 932. At least one of the first magnet 932 and the second magnet 933 is an electromagnet, and the magnetism of the first magnet 932 and the second magnet 933 on the opposite side is different, so that when the electromagnet is energized, a magnetic attraction is generated between the first magnet 932 and the second magnet 933.

[0114] During use, in the normal use process, the electromagnet is powered off, and under the action of the elastic force of the second elastic element 931 , the clamping plate 920 is kept in the clamping position, thereby achieving the purpose of clamping the bed curtain 300 .

[0115] When the bed curtain 300 needs to be replaced, the electromagnet is energized to generate a magnetic attraction between the first magnet 932 and the second magnet 933. Under the action of the magnetic attraction, the clamping plate 920 overcomes the elastic force of the second elastic element 931 and moves from the clamping position to the loosening position, thereby achieving the purpose of loosening the bed curtain 300.

[0116] In this embodiment, the third driving structure has a simple structure, and electric energy is used only in the process of replacing the bed curtain 300, and no electric energy is used during use, thus saving resources.

[0117] Preferably, a second guide roller 550 is provided in the first chamber 502, and the second guide roller 550 is rotatably connected to the bed body 100. Second limiting protrusions 551 adapted to the limiting groove 301 are correspondingly provided at both ends of the second guide roller 550. The second guide roller 550 is used to limit and guide the bed curtain 300 so that the winding roller 520 can wind up the bed curtain 300.

[0118] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A laminar flow bed, comprising a bed body (100) and an air filter device (200) and a bed curtain (300) arranged on the bed body (100), characterized in that: Also includes: A first guide roller (410), the axis of which is arranged in the longitudinal direction, the first guide roller (410) is rotatably connected to the bed body (100), four first guide rollers (410) are provided, and the four first guide rollers (410) are respectively arranged at four corners of the bed body (100); a synchronization element (420) in an annular shape, the synchronization element (420) being sleeved on the four first guide rollers (410) and being capable of rotating along with the rotation of the first guide rollers (410), wherein two synchronization elements (420) are provided, one of the synchronization elements (420) being sleeved on the first ends of the four first guide rollers (410), and the other synchronization element (420) being sleeved on the second ends of the four first guide rollers (410); and A retractable device, which is arranged on the bed body (100), and is used to retract used bed curtains and synchronously release unused bed curtains; Wherein, first connecting elements (310) are arranged on both sides of the bed curtain (300), and second connecting elements (421) are arranged on the outer side of the synchronization element (420), and the two sides of the bed curtain (300) can be coupled and connected with the two synchronization elements (420) respectively through the first connecting element (310) and the second connecting element (421).

2. The laminar flow bed according to claim 1, characterized in that The retractable device comprises: An installation box (510) is arranged at one end of the bed (100), and the installation box (510) has a first chamber (502) and a second chamber (503) arranged in parallel; A winding roller (520), the axis of which is arranged along the longitudinal direction, the winding roller (520) is rotatably arranged in the first chamber (502), and the winding roller (520) is detachably connected to the bed (100); A release roller (530) having an axis line arranged along the longitudinal direction, the release roller (530) being rotatably arranged in the second chamber (503), and the release roller (530) being detachably connected to the bed body (100); and A first driving structure is arranged on the bed (100), and the first driving structure is drivingly connected to the winding roller (520) to drive the winding roller (520) to rotate.

3. The laminar flow bed according to claim 2, characterized in that It also includes a clamping device, wherein two clamping devices are provided, and the two clamping devices are respectively provided in the first chamber (502) and the second chamber (503), and the clamping device includes: A fixing seat (610) fixedly connected to the installation box (510); A sliding seat (620) is slidably connected to the installation box (510), and the sliding seat (620) and the fixed seat (610) are arranged at intervals in the longitudinal direction; Two connecting shafts (630) are provided, one of which is provided on the fixed seat (610) and is rotatably connected to the fixed seat (610), and the other connecting shaft (630) is provided on the sliding seat (620) and is rotatably connected to the sliding seat (620); A screw rod (640) having an axis line arranged in a longitudinal direction, the screw rod (640) being rotatably connected to the installation box (510), the sliding seat (620) being sleeved on the screw rod (640), and when the screw rod (640) rotates, the sliding seat (620) can be driven to move in a direction close to or away from the fixed seat (610); and A third motor (650), whose power output shaft is drivingly connected to the screw rod (640) to drive the screw rod (640) to rotate; Wherein, the two ends of the release roller (530) and the winding roller (520) are provided with a first connecting part (501), and one end of the connecting shaft (630) is correspondingly provided with a second connecting part (631) matching the first connecting part (501), and the two ends of the release roller (530) and the winding roller (520) are respectively coupled and connected with the corresponding connecting shaft (630) through the first connecting part (501) and the second connecting part (631).

4. The laminar flow bed according to any one of claims 2 to 3, characterized in that: It also includes a limiting device, wherein two limiting devices are provided, and the two limiting devices are respectively provided at two ends of the second chamber (503), and the limiting device includes: A connecting arm (710) movably connected to the bed (100); a limiting roller (720) which is arranged on the connecting arm (710) and is rotatably connected to the connecting arm (710), and an outer side wall of the limiting roller (720) is provided with a first limiting protrusion (721), and a limiting groove (301) matching with the first limiting protrusion (721) is correspondingly provided on the outer side of the bed curtain (300); and A first elastic element, a first end of which is connected to the connecting arm (710) and a second end of which is connected to the bed body (100); and in a natural state, the first elastic element applies elastic force to the connecting arm (710), so that the connecting arm (710) can apply force to the bed curtain (300) through the limiting roller (720).

5. The laminar flow bed according to claim 4, characterized in that It also includes a curtain raising device, which is arranged in the first chamber (502), and includes: a curtain raising blade (810), the length direction of which is arranged in the longitudinal direction, and the curtain raising blade (810) is slidably connected to the installation box (510), so that the curtain raising blade (810) can be switched between a first position and a second position in the transverse direction; and The second driving structure is drivingly connected to the curtain raising blade (810) to drive the curtain raising blade (810) to move back and forth between the first position and the second position.

6. The laminar flow bed according to claim 2, 3 or 5, characterized in that It also includes a clamping device, wherein two clamping devices are provided, and the two clamping devices are respectively provided in the first chamber (502) and the second chamber (503), and the clamping devices: A fixing plate (910) disposed on one side of the installation box (510), the fixing plate (910) being fixedly connected to the bed body (100); A clamping plate (920) is arranged on the outside of the fixing plate (910), and the clamping plate (920) is slidably connected to the bed (100) so that the clamping plate (920) can be reciprocatedly switched between a clamping position and a loosening position; as well as The third driving structure is connected to the clamping plate (920) in a transmission manner. When clamping, the third driving structure drives the clamping plate (920) to a clamping position, and the clamping plate (920) cooperates with the fixing plate (910) to clamp the bed curtain (300). When loosening, the third driving structure drives the clamping plate (920) to a loosening position, and the clamping plate (920) separates from the fixing plate (910) to loosen the bed curtain (300).

7. The laminar flow bed according to claim 6, characterized in that The third driving structure comprises: A second elastic element (931), a first end of which is connected to the bed body (100) and a second end of which is connected to the clamping plate (920), and in a natural state, the second elastic element (931) applies elastic force to the clamping plate (920) so that the clamping plate (920) has a tendency to move from a loose position to a clamping position; a first magnet (932) fixedly disposed on the bed (100); and a second magnet (933) fixedly disposed on the clamping plate (920) and corresponding to the first magnet (932); At least one of the first magnet (932) and the second magnet (933) is an electromagnet, and the magnetic properties of the first magnet (932) and the second magnet (933) on opposite sides are different, so that when the electromagnet is energized, a magnetic attraction force can be generated between the first magnet (932) and the second magnet (933).

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