Turnover device and bed

Abstract

A kind of turnover device and bed are used to improve the situation of unsteadiness in turnover process, and the turnover device includes turnover part and driving part, and the driving part drives the left and right turnover of turnover part;Turnover part has left end and right end, left end is provided with left rotating shaft, and right end is provided with right rotating shaft;Turnover device has horizontal state, left turnover state and right turnover state;In horizontal state, left rotating shaft is located at first position, right rotating shaft is located at second position, first position and second position are same height, and the left end and right end of turnover part are same height;In left turnover state, left rotating shaft is lifted by driving part, and leaves first position, right rotating shaft rotates in second position, and the left end of turnover part rotates and lifts around right rotating shaft;In right turnover state, right rotating shaft is lifted by driving part, and leaves second position, left rotating shaft rotates in first position, and the right end of turnover part rotates and lifts around left rotating shaft.

Description

Technical Field

[0001] This invention relates to nursing devices, specifically to a turning device and a bed. Background Technology

[0002] Caregivers need to help long-term bedridden patients turn from side to side, which requires the bed to have a turning function. Beds with turning functions often have problems with unstable turning processes, and the turning angle speed is sometimes fast and sometimes slow, which can easily cause bedridden patients to fall off the bed and get injured. Summary of the Invention

[0003] The purpose of this invention is to provide a flipping device and bed to improve the unstable flipping process.

[0004] In a first aspect, the present invention provides a flipping device. According to an embodiment of the present invention, the flipping device includes a flipping part and a driving part, wherein the driving part drives the flipping part to flip left and right.

[0005] The flipping part has a left end and a right end, the left end is provided with a left rotation axis, and the right end is provided with a right rotation axis;

[0006] The flipping device has a horizontal state, a left flipping state, and a right flipping state;

[0007] In the horizontal state, the left rotation axis is located in the first position, the right rotation axis is located in the second position, the first position and the second position are at the same height, and the left end and the right end of the flipping part are at the same height;

[0008] In the left-flipped state, the left rotation axis is lifted by the drive unit and moves away from the first position, the right rotation axis rotates in the second position, and the left end of the flipping unit rotates and is lifted around the right rotation axis;

[0009] In the right-flipped state, the right rotation axis is lifted by the drive unit and moves away from the second position, while the left rotation axis rotates in the first position, and the right end of the flipping unit rotates and is lifted around the left rotation axis.

[0010] In one or more embodiments, the drive unit includes a rocker arm and a tripod;

[0011] The swing arm has an upper end and a lower end, the lower end swings around the upper end, and a sliding rod is provided at the lower end of the swing arm;

[0012] The tripod has a top left corner point, a top right corner point, and a sliding bottom corner point;

[0013] The tripod includes a left diagonal bar, which has an upper left end and a lower right end, and the upper left end of the left diagonal bar forms the upper left corner of the tripod.

[0014] The tripod also includes a right diagonal bar, which has an upper right end and a lower left end, and the upper right end of the right diagonal bar forms the upper right corner point of the tripod;

[0015] The distance between the top left corner point and the top right corner point remains unchanged;

[0016] The lower right end of the left diagonal rod is provided with a left diagonal slide, which has an upper left stop and a lower right stop. The lower left end of the right diagonal rod is provided with a right diagonal slide, which has an upper right stop and a lower left stop. The left diagonal slide and the right diagonal slide partially overlap and are passed through by the sliding rod of the swing arm. The sliding rod slides within the left diagonal slide and the right diagonal slide to form the lower sliding corner point of the tripod.

[0017] In the horizontal state, the sliding rod is located at the upper left stop point of the left inclined slide and the upper right stop point of the right inclined slide. The upper left and upper right corner points are at the same height and form an isosceles triangle with the lower sliding corner point. The left rotation axis is supported in the first position and the right rotation axis is supported in the second position.

[0018] In the left-flipped state, the swing arm swings to the left, the sliding rod rotates to the upper left, the left inclined rod is lifted at the upper left stop point of the left inclined slide, the upper left corner point rises, the left rotation axis is lifted, the right rotation axis is supported in the second position, the right inclined rod is driven, the upper right corner point moves to the left and then remains stationary, and the sliding rod slides from the upper right stop point to the lower left stop point on the right inclined slide.

[0019] In the right-flipped state, the swing arm swings to the right, the sliding rod rotates to the upper right, the right inclined rod is lifted at the upper right stop point of the right inclined slide, the upper right corner point rises, the right rotation axis is lifted, the left rotation axis is supported in the first position, the left inclined rod is driven, the upper left corner point moves to the right and then remains stationary, and the sliding rod slides from the upper left stop point to the lower right stop point on the left inclined slide.

[0020] In one or more embodiments, the drive unit further includes a left vertical rod and a right vertical rod;

[0021] The tripod also includes an upper crossbar, which has a left end and a right end;

[0022] The upper left end of the left diagonal bar is rotatably connected to the left end of the upper horizontal bar, forming the upper left corner point of the tripod;

[0023] The upper right end of the right diagonal bar is rotatably connected to the right end of the upper horizontal bar, forming the upper right corner point of the tripod;

[0024] The left vertical rod has an upper end and a lower end, the lower end of the left vertical rod is rotatably connected to the upper left corner point, and the upper end of the left vertical rod is rotatably connected to the left rotation axis;

[0025] The right vertical rod has an upper end and a lower end, the lower end of the right vertical rod is rotatably connected to the upper right corner point, and the upper end of the right vertical rod is rotatably connected to the right rotation axis;

[0026] In the left-flipped state, the upper left corner point rises, the left vertical bar rises, the left rotation axis is lifted, and the right diagonal bar is driven by the upper horizontal bar;

[0027] In the right-flipped state, the upper right corner point rises, the right vertical bar rises, the right rotation axis is lifted, and the left diagonal bar is driven by the upper horizontal bar.

[0028] In one or more embodiments, the lower left stop of the right inclined slide limits the extreme position of the left flip state, the sliding rod slides to the lower left stop of the right inclined slide, and the left rotation axis is raised to its highest position;

[0029] The lower right stop of the left inclined slide limits the extreme position of the right flip state. When the sliding rod slides to the lower right stop of the left inclined slide, the right rotation axis is raised to its highest position.

[0030] In one or more embodiments, the flipping device further includes a fixing part, the fixing part including a fixing frame, the fixing frame being horizontally arranged and including a front fixing crossbar and a rear fixing crossbar spaced apart, the swing arm being arranged at the interval between the rear side of the front fixing crossbar and the front side of the rear fixing crossbar;

[0031] The drive unit further includes a rotating longitudinal bar having a front end and a rear end. The front end of the rotating longitudinal bar is rotatably fixed to the front fixed crossbar, and the rear end of the rotating longitudinal bar is rotatably fixed to the rear fixed crossbar. The upper end of the swing arm is fixed to the middle of the rotating longitudinal bar to allow the lower end of the swing arm to swing around the upper end of the swing arm.

[0032] In one or more embodiments, a rotating collar is provided on the upper part of both the front fixed crossbar and the rear fixed crossbar, the front end of the rotating longitudinal bar is inserted into the rotating collar on the upper part of the front fixed crossbar, and the rear end of the rotating longitudinal bar is inserted into the rotating collar on the upper part of the rear fixed crossbar.

[0033] In one or more embodiments, the flipping device further includes a fixing part, the fixing part including a fixing frame, the fixing frame being horizontally arranged and including a right fixing rod, and the swing arm being arranged to the left of the right fixing rod;

[0034] The drive unit further includes a push rod, which is horizontally positioned and has a left end and a right end. The right end of the push rod is rotatably fixed to the right fixed longitudinal rod, and the left end of the push rod is rotatably fixed to the lower end of the swing rod.

[0035] In the horizontal position, the left end of the push rod is stationary;

[0036] In the left-flipped state, the left end of the push rod extends to the left, driving the swing rod to swing to the left;

[0037] In the right-flipped state, the left end of the push rod shortens to the right, driving the swing arm to swing to the right.

[0038] In one or more embodiments, the flipping device further includes a fixing part, the fixing part including a fixing frame, the fixing frame being horizontally arranged and including a left fixing rod, and the swing arm being disposed on the right side of the left fixing rod;

[0039] The drive unit further includes a push rod, which is horizontally positioned and has a left end and a right end. The left end of the push rod is rotatably fixed to the left fixed longitudinal rod, and the right end of the push rod is rotatably fixed to the lower end of the swing rod.

[0040] In the horizontal position, the right end of the push rod is stationary;

[0041] In the left-flipped state, the right end of the push rod shortens to the left, driving the swing rod to swing to the left;

[0042] In the right-flipped state, the right end of the push rod extends to the right, driving the swing arm to swing to the right.

[0043] In one or more embodiments, the flipping device further includes a fixing part, the fixing part including a fixing frame, the fixing frame being horizontally arranged and including a front fixing crossbar, the upper part of the front fixing crossbar being provided with a left support seat and a right support seat, the upper parts of the left support seat and the right support seat having upward openings;

[0044] The left rotating shaft includes a left roller and a left shaft body. The left shaft body has a front end that protrudes from the flipping part. The left roller is rotatably fixed to the front end of the left shaft body.

[0045] The right rotating shaft includes a right roller and a right shaft body. The right shaft body has a front end that protrudes from the flipping part. The right roller is rotatably fixed to the front end of the right shaft body.

[0046] In the horizontal position, the left roller is supported by the left support, thereby defining the left rotation axis in the first position, and the right roller is supported by the right support, thereby defining the right rotation axis in the second position.

[0047] In the left-flipped state, the left roller leaves the left support from the opening, the right roller is supported by the right support, and the right shaft rotates relative to the right roller.

[0048] In the right-flipped state, the right roller leaves the right support from the opening, the left roller is supported by the left support, and the left shaft rotates relative to the left roller.

[0049] In one or more embodiments, the flipping device further includes a fixing part, the fixing part including a fixing frame, the fixing frame being horizontally arranged and including a front fixing crossbar, and the lower part of the front fixing crossbar being provided with a left stop block and a right stop block;

[0050] At the upper left corner point, a left limiting shaft is provided at the upper left end of the left diagonal bar. The left limiting shaft has a front end, and the front end protrudes to form a left limiting part.

[0051] At the upper right corner point, a right limiting shaft is provided at the upper right end of the right diagonal bar. The right limiting shaft has a front end, and the front end protrudes to form a right limiting part.

[0052] In the horizontal position, the left limiting part is located to the left of the left stop block and has a lateral distance from the left stop block, and the right limiting part is located to the right of the right stop block and has a lateral distance from the right stop block;

[0053] In the left-flipped state, the left limiting part moves to the left, and the right limiting part moves to the left and abuts against the right stop block, so that the upper right corner point remains stationary;

[0054] In the right-flipped state, the right limiting part moves to the right, and the left limiting part moves to the right and abuts against the left stop block, so that the upper left corner point remains stationary.

[0055] Secondly, the present invention provides a bed, according to an embodiment of the present invention, the bed including the aforementioned turning device;

[0056] The bed also includes a bed board, which is arranged laterally and includes a left wing, a middle part, and a right wing. The middle part, the left wing, and the right wing each have a left end and a right end. The right end of the left wing is rotatably connected to the left end of the middle part and is configured to allow rotation only to the upper side of the middle part. The right end of the middle part is rotatably connected to the left end of the right wing and is configured to allow rotation only to the upper side of the middle part.

[0057] The bed board is disposed on the upper part of the flipping part, the flipping part supports the middle part, the left end of the middle part is on the left side of the left rotation axis, and the right end of the middle part is on the right side of the right rotation axis;

[0058] In the horizontal position, the bed board and the flip-up part below it are symmetrical from left to right, the left and right ends of the middle part are at the same height, and the left wing, the middle part and the right wing are horizontal;

[0059] In the left-flipped state, the left end of the middle part rotates and rises about the right rotation axis, the left wing and the middle part form a plane, the right end of the middle part rotates and sinks about the right rotation axis, the right wing is supported so that the right wing rotates upward about the right end of the middle part, and the right wing and the middle part form a right concave angle;

[0060] In the right-flipped state, the right end of the middle part rotates and rises about the left rotation axis, the right wing and the middle part form a plane, the left end of the middle part rotates and sinks about the left rotation axis, the left wing is supported so that the left wing rotates upward about the left end of the middle part, and the left wing and the middle part form a left concave angle.

[0061] The embodiments of the present invention possess at least one of the following beneficial effects:

[0062] 1. During the flipping process, the flipping part always has a unique and fixed axis of rotation, namely the left or right axis of rotation. This makes the flipping angular velocity of the flipping part well controllable, and it is easy to achieve a constant and uniform flipping speed with a constant flipping angular velocity, resulting in a smooth flipping process.

[0063] 2. A relatively long rotation radius is formed between the left and right rotation axes located at the left and right ends of the flipping part, respectively. This reduces the flipping angular velocity of the flipping part, improves the controllability of the flipping part, and makes it easy to achieve uniform flipping with a constant flipping angular velocity, resulting in a smooth flipping process.

[0064] 3. During the flipping process and its reverse process, the sliding rod slides on one of the left and right inclined slides and pushes against the upper stop point of the other. The movement is smooth and stable, which makes the flipping process and its reverse process smooth and stable. This makes the bedridden person more comfortable when flipping and less likely to fall off the bed.

[0065] 4. The shortening / extension length of the push rod and the flipping angle of the flipping part are roughly linear, which makes the flipping angular velocity of the flipping part well controllable. The flipping angular velocity of the flipping part is roughly uniform, and the flipping process is smooth, which makes it less likely for the bedridden person to fall off the bed during the flipping process. Attached Figure Description

[0066] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, wherein:

[0067] Figure 1 This is the front view of the flipping device in a horizontal position;

[0068] Figure 2 This is a front view of the flipping device in its left-flipped state;

[0069] Figure 3 This is a front view of the flipping device in its right-flipped state;

[0070] Figure 4 A perspective view of the flipping device in its left-flipped state;

[0071] Figure 5 A perspective view of the flipping device in its right-flipped state;

[0072] Figure 6 This is the front view of the bed in a horizontal position;

[0073] Figure 7 This is the front view of the bed with it flipped to the left.

[0074] Figure 8 This is the front view of the bed with it flipped to the right.

[0075] Figure label:

[0076] 1-Tilting device;

[0077] 2-Flipping section, 5-Left end of flipping section, 6-Right end of flipping section, 7-Left rotating shaft, 8-Left roller, 9-Left shaft body, 10-Front end of left shaft body, 11-Rear end of left shaft body, 12-Right rotating shaft, 13-Right roller, 14-Right shaft body, 15-Front end of right shaft body, 16-Rear end of right shaft body;

[0078] 4-Fixing part, 17-Fixing frame, 18-Front fixed crossbar, 19-Rear fixed crossbar, 20-Left fixed longitudinal bar, 21-Right fixed longitudinal bar, 22-Left support seat, 23-Right support seat, 24-Opening, 25-Cup-shaped groove, 77-Left stop block, 78-Right stop block;

[0079] 3-Drive unit, 27-Swing rod, 28-Tripod, 29-Left vertical rod, 30-Right vertical rod, 31-Upper end of swing rod, 32-Lower end of swing rod, 33-Sliding rod, 34-Front swing rod, 35-Middle swing rod, 36-Rotating vertical rod, 37-Front end of rotating vertical rod, 38-Rear end of rotating vertical rod, 39-Rotating collar, 40-Push rod, 41-Left end of push rod, 42-Right end of push rod, 43-Rear swing rod, 44-Pin, 45-Upper left corner point, 46-Upper right corner point, 47-Lower sliding corner point, 48-Upper horizontal rod, 49-Left diagonal rod, 50-Right diagonal rod, 51-Left end of upper horizontal rod, 52-Right end of upper horizontal rod, 53-Upper left end of left diagonal rod, 54-Left 55 - Lower right end of the diagonal bar; 56 - Upper right end of the right diagonal bar; 57 - Lower left end of the right diagonal bar; 58 - Upper left stop of the left diagonal bar; 59 - Lower right stop of the left diagonal bar; 60 - Right diagonal bar; 61 - Upper right stop of the right diagonal bar; 62 - Lower left stop of the right diagonal bar; 63 - Upper end of the left vertical bar; 64 - Lower end of the left vertical bar; 65 - Upper end of the right vertical bar; 66 - Lower end of the right vertical bar; 67 - Left shaft hole rotating joint; 68 - Left limiting shaft; 69 - Front end of the left limiting shaft; 70 - Rear end of the left limiting shaft; 71 - Left limiting part; 72 - Right shaft hole rotating joint; 73 - Right limiting shaft; 74 - Front end of the right limiting shaft; 75 - Rear end of the right limiting shaft; 76 - Right limiting part.

[0080] 79-bed;

[0081] 80-Bed board, 81-Left wing, 82-Middle section, 83-Right wing, 84-Left end of left wing, 85-Right end of left wing, 86-Left end of middle section, 87-Right end of middle section, 88-Left end of right wing, 89-Right end of right wing, 93-Right concave angle, 94-Left concave angle;

[0082] 90-Bed frame, 91-Left support rod, 92-Right support rod. Detailed Implementation

[0083] The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0084] It should be noted that these and other accompanying drawings are merely examples and are not drawn to scale, and should not be construed as limiting the scope of protection of the present invention.

[0085] The terms “first”, “second”, etc., are used interchangeably to distinguish one feature from another and are not intended to indicate that each feature must be located in the position shown in the figure in each embodiment.

[0086] The flipping device 1 has a horizontal state, a left-flipping state, and a right-flipping state. Figures 1 to 3 The structure of the flipping device 1 is shown in the front view. Figure 1 The flipping device 1 is in a horizontal position. Figure 2 The central flipping device 1 is in the left flipping state. Figure 3 The middle flipping device 1 is in the right flipping state. Figure 4 and Figure 5 The three-dimensional structure of the flipping device 1 is shown. Figure 4 The central flipping device 1 is in the left flipping state. Figure 5 The middle flipping device 1 is in the right flipping state.

[0087] The directional terms "left," "right," and "horizontal" are referenced to the X-direction shown in the diagram. The arrow pointing in the X-direction indicates "left," and the opposite direction indicates "right." The directional terms "up," "down," and "vertical" are referenced to the Z-direction shown in the diagram. The arrow pointing in the Z-direction indicates "up," and the opposite direction indicates "down." The directional terms "front," "back," and "longitudinal" are referenced to the Y-direction shown in the diagram. The arrow pointing in the Y-direction indicates "front," and the opposite direction indicates "back."

[0088] like Figures 1 to 5 As shown, the flipping device 1 includes a flipping part 2, a driving part 3, and a fixing part 4.

[0089] Continue to refer to Figures 1 to 5 The flip-up part 2 is exemplarily a flat frame, which will be understood later as serving as the mounting base for the bed board 80. The flip-up part 2 is generally arranged laterally and has a left end 5 and a right end 6.

[0090] Continue to refer to Figures 1 to 5 The left end 5 of the flipping part 2 is provided with a left rotating shaft 7, which is arranged longitudinally. The left rotating shaft 7 includes a left roller 8 and a left shaft 9. The left shaft 9 has a front end 10 and a rear end 11. The left shaft 9 is fixedly connected to the flipping part 2 and passes through the flipping part 2. The front end 10 of the left shaft 9 extends from the front side of the flipping part 2 and protrudes from the flipping part 2. The rear end 11 of the left shaft 9 extends from the rear side of the flipping part 2 and protrudes from the flipping part 2. The left roller 8 is rotatably fixed to the front end 10 of the left shaft 9 and can rotate around the front end 10 of the left shaft 9.

[0091] Continue to refer to Figures 1 to 5Similarly, the right end 6 is provided with a right rotation shaft 12, which is arranged longitudinally. The right rotation shaft 12 includes a right roller 13 and a right shaft body 14. The right shaft body 14 has a front end 15 and a rear end 16. The right shaft body 14 is fixedly connected to and passes through the flipping part 2. The front end 15 of the right shaft body 14 extends out from the front side of the flipping part 2 and protrudes into the flipping part 2. The rear end 16 of the right shaft body 14 extends out from the rear side of the flipping part 2 and protrudes into the flipping part 2. The right roller 13 is rotatably fixed to the front end 15 of the right shaft body 14 and can rotate around the front end 15 of the right shaft body 14.

[0092] Continue to refer to Figures 1 to 5 The fixing part 4 includes a fixing frame 17, which is a generally rectangular frame arranged horizontally. It includes a front fixing crossbar 18, a rear fixing crossbar 19, a left fixing longitudinal bar 20, and a right fixing longitudinal bar 21, with a central gap between them. The front fixing crossbar 18 and the rear fixing crossbar 19 are located at the front and rear of the fixing frame 17, respectively. Both the front fixing crossbar 18 and the rear fixing crossbar 19 are arranged horizontally, with left and right ends. The left fixing longitudinal bar 20 is fixedly connected to the left end of both the front fixing crossbar 18 and the right fixing longitudinal bar 21 is fixedly connected to the right end of both the front fixing crossbar 18 and the right fixing longitudinal bar 21. The left fixing longitudinal bar 20 and the right fixing longitudinal bar 21 are located on the left and right sides of the fixing frame 17, respectively. Both the left fixing longitudinal bar 20 and the right fixing longitudinal bar 21 are arranged longitudinally, with front and rear ends. The front fixing crossbar 18 is fixedly connected to the front end of both the left fixing crossbar 20 and the right fixing longitudinal bar 21 is fixedly connected to the rear fixing crossbar 19 at the rear end.

[0093] Continue to refer to Figures 1 to 5 The upper part of the front fixed crossbar 18 is provided with a left support seat 22 and a right support seat 23. The left support seat 22 is located at the left end of the front fixed crossbar 18 and is used to support the left roller 8. The left support seat 22 provides a cup-shaped groove 25, with an upward opening 24 at the top for the left roller 8 to enter and exit the cup-shaped groove 25, and the lower part is shaped and sized to support the left roller 8. Similarly, the right support seat 23 is located at the right end of the front fixed crossbar 18 and is used to support the right roller 13. The right support seat 23 provides a cup-shaped groove 25, with an upward opening 24 at the top for the right roller 13 to enter and exit the cup-shaped groove 25, and the lower part is shaped and sized to support the right roller 13.

[0094] Continue to refer to Figure 1 The flipping device 1 is in a horizontal state, the flipping part 2 is horizontal, the left end 5 and the right end 6 of the flipping part 2 are at the same height, the left roller 8 is supported by the cup-shaped groove 25 of the left support seat 22, limiting the left rotation axis 7 to the first position, the right roller 13 is supported by the cup-shaped groove 25 of the right support seat 23, limiting the right rotation axis 12 to the second position, the first position and the second position are at the same height.

[0095] The drive unit 3 drives the flipping unit 2 to flip to the right, changing the flipping device 1 from a horizontal state to a left-flipping state. (Continue referring to...) Figure 2 and Figure 4 When the flipping device 1 is in the left-flipped state, the left rotating shaft 7 is lifted by the drive unit 3, the left roller 8 leaves the cup-shaped groove 25 from the opening 24 of the left support 22, the left rotating shaft 7 leaves the first position, the right roller 13 is still supported by the cup-shaped groove 25 of the right support 23, the right shaft 14 rotates relative to the right roller 13, that is, the right rotating shaft 12 rotates in the second position, the left end 5 of the flipping unit 2 rotates and is lifted around the right rotating shaft 12, and the left end 5 of the flipping unit 2 is higher than the right end 6. Through the reverse action of the aforementioned action, the flipping device 1 changes from the left-flipped state to the horizontal state.

[0096] The drive unit 3 drives the flipping unit 2 to flip to the left, changing the flipping device 1 from a horizontal state to a right-flipping state. (Continue referring to...) Figure 3 and Figure 5 When the flipping device 1 is in the right-flipped state, the right rotating shaft 12 is lifted by the drive unit 3, the right roller 13 leaves the cup-shaped groove 25 from the opening 24 of the right support 23, the right rotating shaft 12 leaves the second position, the left roller 8 is still supported by the cup-shaped groove 25 of the left support 22, the left shaft 9 rotates relative to the left roller 8, that is, the left rotating shaft 7 rotates in the first position, the right end 6 of the flipping unit 2 rotates and is lifted around the left rotating shaft 7, and the right end 6 of the flipping unit 2 is higher than the left end 5. Through the reverse action of the aforementioned action, the flipping device 1 changes from the right-flipped state to the horizontal state.

[0097] As can be understood from the above, the flipping part 2 always has a unique and fixed rotation axis, namely the left rotation axis 7 or the right rotation axis 12, during the flipping process and its reverse process. This makes the flipping angular velocity of the flipping part 2 well controllable, and it is easy to achieve a constant and uniform flipping with a constant flipping angular velocity, and the flipping process is smooth.

[0098] From the above, it can also be understood that during the flipping process and its reverse process, one of the left rotating shaft 7 and the right rotating shaft 12 of the flipping part 2 serves as a rotating shaft, while the other is directly driven by the driven part 3. A relatively long rotation radius is formed between the left rotating shaft 7 and the right rotating shaft 12 located at the left end 5 and the right end 6 of the flipping part 2, respectively. This reduces the flipping angular velocity of the flipping part 2, improves the flipping controllability of the flipping part 2, and makes it easy to achieve a constant flipping angular velocity and a smooth flipping process.

[0099] Continue to refer to Figures 1 to 5 The drive unit 3 includes a swing arm 27, a tripod 28, a left vertical bar 29, and a right vertical bar 30.

[0100] Continue to refer to Figures 1 to 5The swing arm 27 is generally vertically oriented and has an upper end 31 and a lower end 32. The lower end 32 swings around the upper end 31. A sliding rod 33 is provided at the lower end 32 of the swing arm 27. In the illustrated embodiment, the swing arm 27 is exemplarily composed of a front swing arm 34 and a middle swing arm 35. The front swing arm 34 is longitudinally in front, and the middle swing arm 35 is longitudinally behind, with the two arranged at intervals. Both the front swing arm 34 and the middle swing arm 35 are generally vertically oriented and have an upper end and a lower end. The lower end of the front swing arm 34 and the lower end of the middle swing arm 35 are connected by the sliding rod 33. The sliding rod 33 is longitudinally oriented, with its front end connected to the lower end of the front swing arm 34 and its rear end connected to the lower end of the middle swing arm 35. Exemplarily, the sliding rod 33 is provided by a screw, which is threadedly connected to the threaded hole at the lower end of the front swing arm 34 and the lower end of the middle swing arm 35. The upper end of the front swing arm 34 is connected to the upper end of the middle swing arm 35 via the rotating longitudinal rod 36, which will be described later.

[0101] Compared with a single-piece pendulum with only a front pendulum 34 or a middle pendulum 35, the double-piece pendulum 27 composed of a front pendulum 34 and a middle pendulum 35 has better structural strength. When the sliding rod 33 at its lower end 32 is driven by force, the pendulum 27 is less prone to deflection or other deformation, thereby achieving stable and consistent motion transmission.

[0102] Continue to refer to Figures 1 to 5 In the illustrated embodiment, the swing arm 27 is disposed in the gap at the center of the fixed frame 17, that is, in the gap between the rear side of the front fixed crossbar 19 and the front side of the rear fixed crossbar 19. The drive unit 3 also includes a rotating longitudinal rod 36, which is arranged longitudinally and has a front end 37 and a rear end 38. The front end 37 and the rear end 38 of the rotating longitudinal rod 36 are rotatably fixed to the front fixed crossbar 18 and the rear fixed crossbar 19, respectively. Exemplarily, the upper part of the front fixed crossbar 18 and the rear fixed crossbar 19 are both provided with rotating collars 39. The rotating collar 39 on the front fixed crossbar 18 is disposed in the transverse middle between the left support seat 22 and the right support seat 23, thereby defining the transverse position of the rotating collar 39 on the rear fixed crossbar 19. The front end 37 of the rotating longitudinal rod 36 is inserted into the rotating collar 39 on the front fixed crossbar 18, and the rear end 38 of the rotating longitudinal rod 36 is inserted into the rotating collar 39 on the rear fixed crossbar 19. The rotating longitudinal rod 36 can rotate relative to the rotating collar 39. The upper end 31 of the swing arm 27 is fixed to the middle of the rotating vertical rod 36. The upper ends of the front swing arm 34 and the middle swing arm 35 are fixedly connected to the middle of the rotating vertical rod 36 and rotate with the rotating vertical rod 36, thereby causing the lower end 32 of the swing arm 27 to swing around the upper end 31 of the swing arm 27. The "middle" refers to the area between the front end 37 and the rear end 38 of the rotating vertical rod 36, and does not refer to the middle position between the front end 37 and the rear end 38 of the rotating vertical rod 36.

[0103] The rotating longitudinal bar 36 is located on the upper side of the front fixed crossbar 18 and the rear fixed crossbar 19, so that the upper end 31 of the swing arm 27 protrudes from the upper side of the fixed frame 17. This moves the drive part 3 upward relative to the fixed frame 17, reducing the size of the drive part 3 protruding from the lower side of the fixed frame 17. As can be understood later, this helps to lower the height of the bed 79, making it easier for the bedridden person to get in and out of bed, and also making it easier for caregivers to assist (such as lifting) the bedridden person to get in and out of bed, while reducing the injury caused by the bedridden person falling from the bed.

[0104] Continue to refer to Figures 1 to 5 The drive unit 3 also includes a push rod 40, which is generally arranged laterally and has a left end 41 and a right end 42. In the illustrated embodiment, the push rod 40 is positioned laterally between the right fixed vertical rod 21 and the swing rod 27. The right end 42 of the push rod 40 is rotatably fixed to the right fixed vertical rod 21 and can rotate about the right fixed vertical rod 21 to a certain extent. The left end 41 of the push rod 40 is rotatably fixed to the lower end 32 of the swing rod 27. For example, in the longitudinal direction, a rear swing rod 43 is also provided on the rear side of the middle swing rod 35. Similarly, the rear swing rod 43 is generally vertically arranged. The upper end of the rear swing rod 43 is fixedly connected to the middle part of the rotating longitudinal rod 36 and rotates with the rotating longitudinal rod 36. In the longitudinal direction, the push rod 40 is arranged between the middle swing rod 35 and the rear swing rod 43. The left end 41 of the push rod 40 is provided with a pin 44. The pin 44 is arranged longitudinally and has a front end and a rear end. The front end of the pin 44 passes through the hole of the middle swing rod 35 to form a shaft hole rotatable connection, and the rear end of the pin 44 passes through the hole of the rear swing rod 43 to form a shaft hole rotatable connection, so as to realize the rotatable fixation of the left end 41 of the push rod 40 to the lower end 32 of the swing rod 27. The left end 41 of the push rod 40 extends to the left, driving the lower end 32 of the swing rod 27 to swing to the left. The left end 41 of the push rod 40 shortens to the right, driving the lower end 32 of the swing rod 27 to swing to the right. The left end 41 of the push rod 40 remains stationary, and the lower end 32 of the swing rod 27 also remains stationary. In the illustrated embodiment, the push rod 40 is exemplarily an electric push rod. In one or more other embodiments, the push rod 40 is another type of push rod, such as a hand-cranked push rod.

[0105] Continue to refer to Figures 1 to 5 Tripod 28 is positioned at the center of fixed frame 17, and is exemplarily positioned longitudinally between front swing arm 34 and middle swing arm 35. Tripod 28 has upper left corner point 45, upper right corner point 46 and sliding lower corner point 47. Tripod 28 includes upper horizontal bar 48, left diagonal bar 49 and right diagonal bar 50.

[0106] Continue to refer to Figures 1 to 5 The upper crossbar 48 is generally arranged horizontally, with a left end 51 and a right end 52. The upper crossbar 48 is an arc-shaped bar, with its left end 51 and right end 52 protruding upwards and recessed in the middle of the horizontal direction to avoid the rotating longitudinal bar 36 above it. This moves the drive unit 3 upward relative to the fixed frame 17, reducing the size of the drive unit 3 protruding from the lower side of the fixed frame 17. As will be understood later, this helps to reduce the height of the bed 79.

[0107] Continue to refer to Figures 1 to 5 The left diagonal rod 49 is generally inclined in the horizontal and vertical planes, and has an upper left end 53 and a lower right end 54. The left diagonal rod 49 has a left diagonal slide 57 at the lower right end 54. The left diagonal slide 57 runs longitudinally through the left diagonal rod 49 and has an upper left stop 58 and a lower right stop 59. The left diagonal slide 57 is arc-shaped, with its upper left stop 58 and lower right stop 59 pointing upwards and concave to the lower left in the middle. The shape of the left diagonal rod 49 at the lower right end 54 is adapted to the left diagonal slide 57 and is also arc-shaped.

[0108] Continue to refer to Figures 1 to 5 The right diagonal rod 50 is generally inclined in the horizontal and vertical planes, and has an upper right end 55 and a lower left end 56. The right diagonal rod 50 has a right diagonal slide 60 at the lower left end 56. The right diagonal slide 60 runs longitudinally through the right diagonal rod 50 and has an upper right stop 61 and a lower left stop 62. The right diagonal slide 60 is arc-shaped, with its upper right stop 61 and lower left stop 62 pointing upwards and concave to the lower right in the middle. The shape of the lower left end 56 of the right diagonal rod 50 is adapted to the right diagonal slide 60 and is also arc-shaped.

[0109] Continue to refer to Figures 1 to 5 The upper left end 53 of the left diagonal bar 49 is rotatably connected to the left end 51 of the upper horizontal bar 48, forming the upper left corner point 45 of the tripod 28. The upper right end 55 of the right diagonal bar 50 is rotatably connected to the right end 52 of the upper horizontal bar 48, forming the upper right corner point 46 of the tripod 28. Vertically, the right diagonal bar 50 is located behind the upper horizontal bar 48, and the left diagonal bar 49 is located behind the right diagonal bar 50. The left diagonal slide 57 and the right diagonal slide 60 partially overlap and are passed through by the sliding rod 33 of the swing arm 27. The sliding rod 33 can slide within the left diagonal slide 57 and the right diagonal slide 60, forming the lower sliding corner point 47 of the tripod 28.

[0110] Continue to refer to Figures 1 to 5The left vertical rod 29 is generally vertically arranged and has an upper end 63 and a lower end 64. In the longitudinal direction, the left vertical rod 29 is located behind the left diagonal rod 49. The lower end 64 of the left vertical rod 29 is rotatably connected to the upper left corner point 45. At the upper left corner point 45, the upper left end 53 of the left diagonal rod 49, the left end 51 of the upper horizontal rod 48, and the lower end 64 of the left vertical rod 29 are rotatably connected to form a left shaft hole rotation joint 67. The left shaft hole rotation joint 67 includes a left limiting shaft 68 as a rotating shaft. The left limiting shaft 68 is arranged longitudinally and has a front end 69 and a rear end 70. From the front end 69 to the rear end 70, it passes through the holes of the left end 51 of the upper horizontal rod 48, the upper left end 53 of the left diagonal rod 49, and the lower end 64 of the left vertical rod 29 in sequence. The front end 69 of the left limiting shaft 68 protrudes out of the left end 51 of the upper horizontal rod 48, that is, protrudes into the left shaft hole rotation joint 67 to form a left limiting part 71. The left vertical rod 29 is also provided on the rear side of the flipping part 2. The upper end 63 of the left vertical rod 29 is rotatably connected to the left rotating shaft 7, specifically rotatably connected to the left shaft body 9 protruding from the rear end 11 of the flipping part 2.

[0111] Continue to refer to Figures 1 to 5 The right vertical rod 30 is generally vertically arranged and has an upper end 65 and a lower end 66. In the longitudinal direction, the right vertical rod 30 is located behind the right diagonal rod 50. The lower end 66 of the right vertical rod 30 is rotatably connected to the upper right corner point 46. At the upper right corner point 46, the upper right end 55 of the right diagonal rod 50, the right end 52 of the upper horizontal rod 48, and the lower end 66 of the right vertical rod 30 are rotatably connected to form a right shaft hole rotation joint 72. The right shaft hole rotation joint 72 includes a right limiting shaft 73 as a rotating shaft. The right limiting shaft 73 is arranged longitudinally and has a front end 74 and a rear end 75. From the front end 74 to the rear end 75, it passes through the holes of the right end 52 of the upper horizontal rod 48, the upper right end 55 of the right diagonal rod 50, and the lower end 66 of the right vertical rod 30 in sequence. The front end 74 of the right limiting shaft 73 protrudes out of the right end 52 of the upper horizontal rod 48, that is, it protrudes out of the right shaft hole rotation joint 72 to form a right limiting part 76. The right vertical rod 30 is also provided on the rear side of the flipping part 2. The upper end 65 of the right vertical rod 30 is rotatably connected to the right rotating shaft 12, specifically rotatably connected to the right shaft body 14 protruding from the rear end 16 of the flipping part 2.

[0112] Continue to refer to Figures 1 to 5 The lower part of the front fixed crossbar 18 is provided with a left stop 77 and a right stop 78, which are respectively set at the left and right ends of the front fixed crossbar 18 in the horizontal direction. The left stop 77 is used to restrict the movement of the left limiting part 71 so that the upper left corner point 45 remains stationary, and the right stop 78 is used to restrict the movement of the right limiting part 76 so that the upper right corner point 46 remains stationary.

[0113] Continue to refer to Figure 1The flipping device 1 is in a horizontal state, the left end 41 of the push rod 40 remains stationary, the swing rod 27 is in a vertical state, the sliding rod 33 of the lower end 32 of the swing rod 27 is at its lowest point, the sliding rod 33 is located at the upper left stop 58 of the left inclined slide 57 and the upper right stop 61 of the right inclined slide 60, the left inclined rod 49, the right inclined rod 50, the upper horizontal rod 48, the left vertical rod 29 and the right vertical rod 30 are completely symmetrical, the upper left corner point 45 and the upper right corner point 46 are at the same height, forming an isosceles triangle with the lower sliding corner point 47, the left limiting part 7 of the upper left corner point 45 1. Located to the left of the left stop 77 and with a small lateral gap from the left stop 77, the right limiting part 76 at the upper right corner point 46 is located to the right of the right stop 78 and with the same small lateral gap from the left stop 77. The left vertical rod 29 and the right vertical rod 30 are in an upright state. The left roller 8 is supported by the cup-shaped groove 25 of the left support seat 22, limiting the left rotation axis 7 to the first position. The right roller 13 is supported by the cup-shaped groove 25 of the right support seat 23, limiting the right rotation axis 12 to the second position. The left end 5 and the right end 6 of the flipping part 2 are at the same height, and the flipping part 2 is horizontal. In another embodiment, in the horizontal state, the sliding rod 33 is located near the upper left stop 58 of the left inclined slide 57 and near the upper right stop 61 of the right inclined slide 60. The sliding rod 33 has a small distance between the upper left stop 58 and the upper right stop 61 to have a small idle stroke to compensate for machining and assembly errors, reduce machining and assembly accuracy, and reduce costs.

[0114] The drive unit 3 drives the flipping unit 2 to flip to the right, changing the flipping device 1 from a horizontal state to a left-flipping state. (Continue referring to...) Figure 2 and Figure 4When the flipping device 1 is in the left flipping state, the left end 41 of the push rod 40 extends to the left, driving the swing rod 27 to swing to the left. The sliding rod 33 of the lower end 32 of the swing rod 27 rotates to the upper left, lifting the left inclined rod 49 to the upper left at the upper left stop 58 of the left inclined slide 57, causing the upper left corner point 45 to move to the upper left and rise. The left limiting part 71 of the upper left corner point 45 moves to the upper left and is no longer restricted by the left stop block 77 on its right. At the same time, the upper horizontal rod 48 drives the right inclined rod 50, causing the upper right corner point 46 to move to the left. The right limiting part 76 of the upper right corner point 46 moves to the left, compensating for the small lateral gap between it and the right stop block 78. The right limiting part 76 abuts against the right stop block 78. The right stop 78 restricts the movement of the right limit part 76, keeping the upper right corner point 46 stationary. The sliding rod 33 slides from the upper right stop point 61 to the lower left stop point 62 on the right inclined slide 60. The upper left corner point 45 rises, causing the left vertical rod 29 to rise. The left vertical rod 29 lifts the left rotating shaft 7, and the left roller 8 leaves the cup-shaped groove 25 from the opening 24 of the left support seat 22. The left rotating shaft 7 leaves the first position, and the right roller 13 is still supported by the cup-shaped groove 25 of the right support seat 23. The right shaft 14 rotates relative to the right roller 13, that is, the right rotating shaft 12 rotates in the second position. The left end 5 of the flipping part 2 rotates and rises around the right rotating shaft 12, and the left end 5 of the flipping part 2 is higher than the right end 6. Continue to refer to Figure 2 and Figure 4 The lower left stop point 62 of the right inclined slide 60 limits the extreme position of the left flip state. When the sliding rod 33 slides to the lower left stop point 62 of the right inclined slide 60, the left rotation shaft 7 is raised to its highest position, and the left end 5 of the flipping part 2 flips to its highest position. Through the reverse action of the aforementioned action, the flipping device 1 changes from the left flip state to the horizontal state.

[0115] The drive unit 3 drives the flipping unit 2 to flip to the left, changing the flipping device 1 from a horizontal state to a right-flipping state. (Continue referring to...) Figure 3 and Figure 5When the flipping device 1 is in the right flipping state, the left end 41 of the push rod 40 shortens to the right, driving the swing rod 27 to swing to the right. The sliding rod 33 of the lower end 32 of the swing rod 27 rotates to the upper right, lifting the right inclined rod 50 to the upper right at the upper right stop 61 of the right inclined slide 60, causing the upper right corner point 46 to move to the upper right and rise. The right limit part 76 of the upper right corner point 46 moves to the upper right and is no longer restricted by the right stop block 78 on its left. At the same time, the upper horizontal rod 48 also drives the left inclined rod 49, causing the upper left corner point 45 to move to the right. The left limit part 71 of the upper left corner point 45 moves to the right, compensating for the small lateral gap between it and the left stop block 77. The left limit part 71 abuts against the left stop block. 77. The left stop 77 restricts the movement of the left limit part 71, keeping the upper left corner point 45 stationary. The sliding rod 33 slides from the upper left stop point 58 to the lower right stop point 59 on the left inclined slide 57. The upper right corner point 46 rises, causing the right vertical rod 30 to rise. The right vertical rod 30 lifts the right rotating shaft 12. The right roller 13 leaves the cup-shaped groove 25 from the opening 24 of the right support seat 23. The right rotating shaft 12 leaves the second position. The left roller 8 is still supported by the cup-shaped groove 25 of the left support seat 22. The left shaft 9 rotates relative to the left roller 8, that is, the left rotating shaft 7 rotates in the first position. The right end 6 of the flipping part 2 rotates and rises around the left rotating shaft 7. The right end 6 of the flipping part 2 is higher than the left end 5. Continue to refer to Figure 3 and Figure 5 The lower right stop point 59 of the left inclined slide 57 limits the extreme position of the right flip state. When the sliding rod 33 slides to the lower right stop point 59 of the left inclined slide 57, the right rotation shaft 12 is raised to its highest position, and the right end 6 of the flipping part 2 flips to its highest position. Through the reverse action of the aforementioned action, the flipping device 1 changes from the right flip state to the horizontal state.

[0116] In one or more embodiments, the push rod 40 is positioned transversely between the left fixed vertical rod 20 and the swing rod 27. The left end 41 of the push rod 40 is rotatably fixed to the left fixed vertical rod 20 and can rotate to a certain extent around the left fixed vertical rod 20. The right end 42 of the push rod 40 is rotatably fixed to the lower end 32 of the swing rod 27. In the horizontal state, the right end 42 of the push rod 40 remains stationary, the swing rod 27 is in an upright state, and the sliding rod 33 of the lower end 32 of the swing rod 27 is at its lowest point. In the left-flipping state, the right end 42 of the push rod 40 shortens to the left, driving the swing rod 27 to swing to the left, and the sliding rod 33 of the lower end 32 of the swing rod 27 rotates to the upper left. In the right-flipping state, the right end 42 of the push rod 40 extends to the right, driving the swing rod 27 to swing to the right, and the sliding rod 33 of the lower end 32 of the swing rod 27 rotates to the upper right.

[0117] As can be understood from the above, during the flipping process and its reverse process, the sliding rod 33 slides on one of the left inclined slide 57 and the right inclined slide 60, and pushes against the upper stop point of the other. The movement process is smooth and stable, which makes the flipping process and its reverse process smooth and stable. As can be understood later, this makes the comfort of the bedridden person good when flipping and makes it less likely to fall off the bed.

[0118] From the above, it can also be understood that in the horizontal state of the flipping device 1, the sliding rod 33 is located at the upper left stop 58 of the left inclined slide 57 and the upper right stop 61 of the right inclined slide 60. The portion of the left inclined rod 49 below the upper left stop 58 and the portion of the right inclined rod 50 below the upper right stop 61 are inclined at a large angle, even close to the lateral direction. This reduces the size of the drive part 3 protruding from the lower side of the fixing frame 17. It can be understood later that this helps to lower the height of the bed 79, making it easier for the bedridden person to get in and out of bed, and also makes it easier for the caregiver to assist (such as lifting) the bedridden person to get in and out of bed, while reducing the injury caused by the bedridden person falling from the bed.

[0119] From the above, it can also be understood that the drive unit 3 only needs to set a push rod 40 to realize the switching between the three states of the flipping device 1, without the need for multiple motor inputs, thus reducing costs.

[0120] From the above, it can also be understood that the configuration of the drive unit 3 makes the shortening / extension length of the push rod 40 and the flipping angle of the flipping unit 2 roughly linear. This makes the flipping angular velocity of the flipping unit 2 well controllable, and the flipping angular velocity of the flipping unit 2 is roughly uniform. The flipping process is smooth, which, as can be understood later, makes it less likely for the bedridden person to fall off the bed during the flipping process.

[0121] It can also be understood from the above that the flipping device 1 is an integral unit, which is convenient for overall assembly and disassembly, as described later, and is also convenient for transportation.

[0122] The following is a description of bed 79. Figures 6 to 8 The structure of bed 79 is shown in the front view. Figure 6 The middle bed 79 is in a horizontal position. Figure 7 The middle bed 79 is in a left-flipped position. Figure 8 The middle bed 79 is in a right-flipped position.

[0123] like Figures 6 to 8 As shown, the bed 79 includes the aforementioned tilting device 1.

[0124] Continue to refer to Figures 6 to 8The bed 79 also includes a bed board 80, which is arranged laterally. The bed board 80 includes a left wing 81, a middle part 82, and a right wing 83. The left wing 81 has a left end 84 and a right end 85, the middle part 82 has a left end 86 and a right end 87, and the right wing 83 has a left end 88 and a right end 89. The right end 85 of the left wing is rotatably connected to the left end 86 of the middle part and is configured to allow rotation only towards the upper side of the middle part 82, and not towards the lower side of the middle part 82. The right end 87 of the middle part is rotatably connected to the left end 88 of the right wing and is configured to allow rotation only towards the upper side of the middle part 82, and not towards the lower side of the middle part 82. It can be understood that the left wing 81 and the right wing 83 are only allowed to rotate towards the upper side of the middle part 82, so that when the left wing 81 and the right wing 83 do not rotate relative to the middle part 82, they form a flat plane with the middle part 82, so as to form a flat bed surface for the bedridden person to lie on.

[0125] Continue to refer to Figures 7 to 8 The bed board 80 is positioned above the flip-up part 2, which supports the middle part 82 of the bed board 80. The middle part 82 is fixed to the flip-up part 2. The left end 86 of the middle part is to the left of the left rotation axis 7. As will be understood later, this allows the left end 86 of the middle part to rotate and sink around the left rotation axis 7 in the right flip-up state. The right end 87 of the middle part is to the right of the right rotation axis 12. As will be understood later, this allows the right end 87 of the middle part to rotate and sink around the right rotation axis 12 in the left flip-up state. In the illustrated embodiment, the right end 85 of the left wing and the left end 88 of the right wing are partially supported by the flip-up part 2. The left end 5 of the flip-up part 2 abuts against the right end 85 of the left wing to prevent the left wing 81 from rotating downward toward the middle part 82. The right end 6 of the flip-up part 2 abuts against the left end 88 of the right wing to prevent the right wing 83 from rotating downward toward the middle part 82.

[0126] Continue to refer to Figure 6 In a horizontal position, the bed board 80 and the flip-over portion 2 below it are symmetrical. The left end 86 and the right end 97 of the middle portion 82 are at the same height. The left wing 81, the middle portion 82, and the right wing 83 are horizontal, and the bed board 80 as a whole is horizontal to form a flat bed surface for the bedridden person to lie on. In the illustrated embodiment, the bed 79 also includes a bed frame 90, which includes a left support rod 91 and a right support rod 92. The left support rod 91 and the right support rod 92 are arranged longitudinally. In a horizontal position, the left wing 81 is supported not only at the right end 85 by the flip-over portion 2, but also in the middle by the left support rod 91 to improve the stability of the left wing 81. Similarly, in a horizontal position, the right wing 83 is supported not only at the left end 88 by the flip-over portion 2, but also in the middle by the right support rod 92 to improve the stability of the right wing 83.

[0127] Continue to refer to Figure 7In the left-flipped state, the left end 86 of the middle section 82 rotates and rises around the right rotation axis 12, and the left wing 81 rotates and rises away from the left support rod 91. Supported by the flipping section 2, the left wing 81 does not rotate relative to the middle section 82 and remains in a plane with the middle section 82 to form a flat bed surface for the bedridden person to lie on. The right end 87 of the middle section 82 rotates and sinks around the right rotation axis 12, and the left end 88 of the right wing 83 rotates and sinks. The right wing 83 is supported by the right support rod 92 in the middle, so that the right wing 83 rotates upward around the right end 87 of the middle section 82. The right wing 83 and the middle section 82 form a right concave angle 93, which can prevent the bedridden person from falling off the bed when the bed 79 flips.

[0128] Continue to refer to Figure 8 In the right-flipped state, the right end 87 of the middle section 82 rotates and rises around the left rotation axis 7, and the right wing 83 rotates and rises away from the right support rod 92. Supported by the flipping section 2, the right wing 83 does not rotate relative to the middle section 82 and remains in a plane with the middle section 82 to form a flat bed surface for the bedridden person to lie on. The left end 86 of the middle section 82 rotates and sinks around the left rotation axis 7, and the right end 85 of the left wing 81 rotates and sinks. The left wing 81 is supported by the left support rod 91 in the middle, so that the left wing 81 rotates upward around the left end 86 of the middle section 82. The left wing 81 and the middle section 82 form a left concave angle 94, which can prevent the bedridden person from falling off the bed when the bed 79 flips.

[0129] As can be understood from the above, when the bed 79 is turned over, the part of the bed board 80 where the back of the person lying is flat, and the side of the person's body is recessed into the left concave angle 94 or the right concave angle 93, and is held in place by the folded left wing 81 or the right wing 83. This makes the person comfortable when the bed is turned over, does not exert a direct pushing force on the back, and makes it less likely for the person to fall off the bed.

[0130] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention.

Claims

1. A flipping device, characterized in that, It includes a flipping part and a driving part, wherein the driving part drives the flipping part to flip left and right; The flipping part has a left end and a right end, the left end is provided with a left rotation axis, and the right end is provided with a right rotation axis; The flipping device has a horizontal state, a left flipping state, and a right flipping state; In the horizontal state, the left rotation axis is located in the first position, the right rotation axis is located in the second position, the first position and the second position are at the same height, and the left end and the right end of the flipping part are at the same height; In the left-flipped state, the left rotation axis is lifted by the drive unit and moves away from the first position, the right rotation axis rotates in the second position, and the left end of the flipping unit rotates and is lifted around the right rotation axis; In the right-flipped state, the right rotation axis is lifted by the drive unit and moves away from the second position, the left rotation axis rotates in the first position, and the right end of the flipping unit rotates and is lifted around the left rotation axis; The drive unit includes a rocker arm and a tripod; The swing arm has an upper end and a lower end, the lower end swings around the upper end, and a sliding rod is provided at the lower end of the swing arm; The tripod has a top left corner point, a top right corner point, and a sliding bottom corner point; The tripod includes a left diagonal bar, which has an upper left end and a lower right end, and the upper left end of the left diagonal bar forms the upper left corner of the tripod. The tripod also includes a right diagonal bar, which has an upper right end and a lower left end, and the upper right end of the right diagonal bar forms the upper right corner point of the tripod; The distance between the top left corner point and the top right corner point remains unchanged; The lower right end of the left diagonal rod is provided with a left diagonal slide, which has an upper left stop and a lower right stop. The lower left end of the right diagonal rod is provided with a right diagonal slide, which has an upper right stop and a lower left stop. The left diagonal slide and the right diagonal slide partially overlap and are passed through by the sliding rod of the swing arm. Both the left diagonal slide and the right diagonal slide are arc-shaped. The sliding rod slides within the left diagonal slide and the right diagonal slide to form the lower sliding corner point of the tripod. In the horizontal state, the sliding rod is located at the upper left stop point of the left inclined slide and the upper right stop point of the right inclined slide. The upper left and upper right corner points are at the same height and form an isosceles triangle with the lower sliding corner point. The left rotation axis is supported in the first position and the right rotation axis is supported in the second position. In the left-flipped state, the swing arm swings to the left, the sliding rod rotates to the upper left, the left inclined rod is lifted at the upper left stop point of the left inclined slide, the upper left corner point rises, the left rotation axis is lifted, the right rotation axis is supported in the second position, the right inclined rod is driven, the upper right corner point moves to the left and then remains stationary, and the sliding rod slides from the upper right stop point to the lower left stop point on the right inclined slide. In the right-flipped state, the swing arm swings to the right, the sliding rod rotates to the upper right, the right inclined rod is lifted at the upper right stop point of the right inclined slide, the upper right corner point rises, the right rotation axis is lifted, the left rotation axis is supported in the first position, the left inclined rod is driven, the upper left corner point moves to the right and then remains stationary, and the sliding rod slides from the upper left stop point to the lower right stop point on the left inclined slide.

2. The flipping device according to claim 1, characterized in that, The drive unit also includes a left vertical rod and a right vertical rod; The tripod also includes an upper crossbar, which has a left end and a right end; The upper left end of the left diagonal bar is rotatably connected to the left end of the upper horizontal bar, forming the upper left corner point of the tripod; The upper right end of the right diagonal bar is rotatably connected to the right end of the upper horizontal bar, forming the upper right corner point of the tripod; The left vertical rod has an upper end and a lower end, the lower end of the left vertical rod is rotatably connected to the upper left corner point, and the upper end of the left vertical rod is rotatably connected to the left rotation axis; The right vertical rod has an upper end and a lower end, the lower end of the right vertical rod is rotatably connected to the upper right corner point, and the upper end of the right vertical rod is rotatably connected to the right rotation axis; In the left-flipped state, the upper left corner point rises, the left vertical bar rises, the left rotation axis is lifted, and the right diagonal bar is driven by the upper horizontal bar; In the right-flipped state, the upper right corner point rises, the right vertical bar rises, the right rotation axis is lifted, and the left diagonal bar is driven by the upper horizontal bar.

3. The flipping device according to claim 1, characterized in that, The lower left stop of the right inclined slide limits the extreme position of the left flip state. When the sliding rod slides to the lower left stop of the right inclined slide, the left rotation axis is raised to its highest position. The lower right stop of the left inclined slide limits the extreme position of the right flip state. When the sliding rod slides to the lower right stop of the left inclined slide, the right rotation axis is raised to its highest position.

4. The flipping device according to claim 1, characterized in that, The flipping device further includes a fixing part, which includes a fixing frame. The fixing frame is horizontally arranged and includes a front fixing crossbar and a rear fixing crossbar spaced apart. The swing arm is arranged at the interval between the rear side of the front fixing crossbar and the front side of the rear fixing crossbar. The drive unit further includes a rotating longitudinal bar having a front end and a rear end. The front end of the rotating longitudinal bar is rotatably fixed to the front fixed crossbar, and the rear end of the rotating longitudinal bar is rotatably fixed to the rear fixed crossbar. The upper end of the swing arm is fixed to the middle of the rotating longitudinal bar to allow the lower end of the swing arm to swing around the upper end of the swing arm.

5. The flipping device according to claim 4, characterized in that, Both the front fixed crossbar and the rear fixed crossbar are provided with rotating collars at their upper parts. The front end of the rotating longitudinal bar is inserted into the rotating collar at the upper part of the front fixed crossbar, and the rear end of the rotating longitudinal bar is inserted into the rotating collar at the upper part of the rear fixed crossbar.

6. The flipping device according to claim 1, characterized in that, The flipping device further includes a fixing part, which includes a fixing frame. The fixing frame is horizontally arranged and includes a right fixing rod. The swing rod is arranged to the left of the right fixing rod. The drive unit further includes a push rod, which is horizontally positioned and has a left end and a right end. The right end of the push rod is rotatably fixed to the right fixed longitudinal rod, and the left end of the push rod is rotatably fixed to the lower end of the swing rod. In the horizontal position, the left end of the push rod is stationary; In the left-flipped state, the left end of the push rod extends to the left, driving the swing rod to swing to the left; In the right-flipped state, the left end of the push rod shortens to the right, driving the swing arm to swing to the right.

7. The flipping device according to claim 1, characterized in that, The flipping device further includes a fixing part, which includes a fixing frame. The fixing frame is horizontally arranged and includes a left fixing rod. The swing rod is arranged to the right of the left fixing rod. The drive unit further includes a push rod, which is horizontally positioned and has a left end and a right end. The left end of the push rod is rotatably fixed to the left fixed longitudinal rod, and the right end of the push rod is rotatably fixed to the lower end of the swing rod. In the horizontal position, the right end of the push rod is stationary; In the left-flipped state, the right end of the push rod shortens to the left, driving the swing rod to swing to the left; In the right-flipped state, the right end of the push rod extends to the right, driving the swing arm to swing to the right.

8. The flipping device according to claim 1, characterized in that, The flipping device also includes a fixing part, which includes a fixing frame. The fixing frame is horizontally arranged and includes a front fixing crossbar. The upper part of the front fixing crossbar is provided with a left support seat and a right support seat. The upper parts of the left support seat and the right support seat have upward openings. The left rotating shaft includes a left roller and a left shaft body. The left shaft body has a front end that protrudes from the flipping part. The left roller is rotatably fixed to the front end of the left shaft body. The right rotating shaft includes a right roller and a right shaft body. The right shaft body has a front end that protrudes from the flipping part. The right roller is rotatably fixed to the front end of the right shaft body. In the horizontal position, the left roller is supported by the left support, thereby defining the left rotation axis in the first position, and the right roller is supported by the right support, thereby defining the right rotation axis in the second position. In the left-flipped state, the left roller leaves the left support from the opening, the right roller is supported by the right support, and the right shaft rotates relative to the right roller. In the right-flipped state, the right roller leaves the right support from the opening, the left roller is supported by the left support, and the left shaft rotates relative to the left roller.

9. The flipping device according to claim 1, characterized in that, The flipping device also includes a fixing part, which includes a fixing frame. The fixing frame is horizontally arranged and includes a front fixing crossbar. The lower part of the front fixing crossbar is provided with a left stop block and a right stop block. At the upper left corner point, a left limiting shaft is provided at the upper left end of the left diagonal bar. The left limiting shaft has a front end, and the front end protrudes to form a left limiting part. At the upper right corner point, a right limiting shaft is provided at the upper right end of the right diagonal bar. The right limiting shaft has a front end, and the front end protrudes to form a right limiting part. In the horizontal position, the left limiting part is located to the left of the left stop block and has a lateral distance from the left stop block, and the right limiting part is located to the right of the right stop block and has a lateral distance from the right stop block; In the left-flipped state, the left limiting part moves to the left, and the right limiting part moves to the left and abuts against the right stop block, so that the upper right corner point remains stationary; In the right-flipped state, the right limiting part moves to the right, and the left limiting part moves to the right and abuts against the left stop block, so that the upper left corner point remains stationary.

10. A bed, characterized in that, Includes the flipping device as described in any one of claims 1 to 9; The bed also includes a bed board, which is arranged laterally and includes a left wing, a middle part, and a right wing. The middle part, the left wing, and the right wing each have a left end and a right end. The right end of the left wing is rotatably connected to the left end of the middle part and is configured to allow rotation only to the upper side of the middle part. The right end of the middle part is rotatably connected to the left end of the right wing and is configured to allow rotation only to the upper side of the middle part. The bed board is disposed on the upper part of the flipping part, the flipping part supports the middle part, the left end of the middle part is on the left side of the left rotation axis, and the right end of the middle part is on the right side of the right rotation axis; In the horizontal position, the bed board and the flip-up part below it are symmetrical from left to right, the left and right ends of the middle part are at the same height, and the left wing, the middle part and the right wing are horizontal; In the left-flipped state, the left end of the middle part rotates and rises about the right rotation axis, the left wing and the middle part form a plane, the right end of the middle part rotates and sinks about the right rotation axis, the right wing is supported so that the right wing rotates upward about the right end of the middle part, and the right wing and the middle part form a right concave angle; In the right-flipped state, the right end of the middle part rotates and rises about the left rotation axis, the right wing and the middle part form a plane, the left end of the middle part rotates and sinks about the left rotation axis, the left wing is supported so that the left wing rotates upward about the left end of the middle part, and the left wing and the middle part form a left concave angle.

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