WO2022088574A1

WO2022088574A1 - Four-fold folding electric bed

Info

Publication number: WO2022088574A1
Application number: PCT/CN2021/079268
Authority: WO
Inventors: 单华锋; 王剑; 季川祥; 聂祥; 周擎
Original assignee: 麒盛科技股份有限公司
Priority date: 2020-10-27
Filing date: 2021-03-05
Publication date: 2022-05-05
Also published as: CN114468662A

Abstract

A four-fold folding electric bed, comprising a base (1), a bed board (2) and a turn-over device (3), wherein the bed board (2) is arranged flat on the top portion of the base (1); the turn-over device (3) is used for driving part of the bed board (2) to turn over relative to the base (1); the base (1) comprises a first frame (11), a second frame (12), a third frame (13) and a fourth frame (14); the first frame (11), the second frame (12), the third frame (13) and the fourth frame (14) are sequentially and rotatably connected or detachably connected at junctions; the bed board (2) comprises a back board (22), a hip board (23), a leg board (24) and a foot board (25); the back board (22), the hip board (23), the leg board (24) and the foot board (25) are respectively arranged at the top portions of the first frame (11), the second frame (12), the third frame (13) and the fourth frame (14); and a tail portion (0b) of the back board (22) is hinged to a tail portion (0b) of the first frame (11), and a head portion (0a) of the leg board (24) is hinged to a head portion (0a) of the third frame (13). According to the four-fold folding electric bed, the size after folding is reduced by means of the four-fold design, so as to satisfy the 130" UPS transportation standard, reduce the transportation cost, and enhance the market competitiveness.

Description

A four-folding electric bed

technical field

The invention relates to the technical field of electric beds, in particular to a four-fold electric bed.

Background technique

In the US market, UPS transportation is divided into two standards: 165" and 130". The difference in freight is very large, the difference is about 400 yuan, and the profit margin is very considerable. The calculation method of UPS packaging size is packaging length + 2 * packaging width + 2 * packaging height. The most commonly used Queen size (1524x2032) after the bed is packaged is far from meeting the requirements of UPS. At present, the electric bed that can be delivered on the market only meets the 165" UPS transportation standard, and there is no electric bed that meets the 130" UPS transportation standard. Customers urgently need electric beds that can meet the 130" UPS shipping standard to further reduce shipping costs.

SUMMARY OF THE INVENTION

The present invention provides a four-folding electric bed to solve the technical problem that the prior art folding electric bed cannot meet the 130" UPS transportation standard.

To this end, the present invention provides a four-folding electric bed, the four-folding electric bed includes: a base, a bed board and a turning device, the bed board is laid flat on the top of the base, and the turning device is used to drive the bed board The part of the base is turned over relative to the base; wherein, the base includes: a first frame, a second frame, a third frame and a fourth frame, the first frame, the second frame, the third frame and the The fourth frame is rotatably connected or detachably connected at the junction in sequence; the bed board includes: a back board, a hip board, a leg board and a foot board; the back board, the buttocks board, the legs The top plate and the foot plate are respectively arranged on the top of the first frame, the second frame, the third frame and the fourth frame; The tail is hinged, and the head of the leg panel is hinged with the head of the third frame.

Further, the bed board further comprises: a head board, the head board and the back board are rotatably connected or detachably connected at the junction.

Further, the back panel further includes: a limiting member for restricting the rotation of the head panel relative to the back panel.

Further, the limiting member includes: at least one baffle plate, the baffle plate is rotatably connected to the back plate; when the head plate is rotatable, the baffle plate is in the vertical projection of the back plate; When the head plate is not rotatable, the baffle is in the vertical projection of the back plate and the head plate at the same time.

Further, the limiting member includes: at least one latch, which is arranged on the back panel and can telescopically move relative to the head panel; when the head panel is rotatable, the latch is located on the back panel In the vertical projection of the plate; when the head plate is not rotatable, the latch is in the vertical projection of the back plate and the head plate at the same time.

Further, the second frame and the third frame are rotatably connected by a biaxial rotating member, and both ends of the biaxial rotating member are hinged to the second frame and the third frame respectively.

Further, the biaxial rotating member includes: a load-bearing part and two extension parts; wherein, the two extension parts extend in opposite directions with the load-bearing part as the center, and the extension surfaces of the two extension parts are different; The second frame and the third frame are hinged.

Further, the hip plate and/or the leg plate is provided with an opening matching the biaxial rotating member.

Further, the head portion of the first frame, the tail portion of the second frame and the bottom of the load-bearing portion are provided with a plurality of bed foot connection holes.

Further, it also includes: a concave-shaped reinforcing sheet, the two side walls of the reinforcing sheet are respectively attached to the side edges of the second frame and the third frame, and the reinforcing sheet is connected to the bottom of the load-bearing portion. A through hole matching with the connecting hole of the foot of the bed is attached and provided.

Further, it is characterized in that the first frame can be placed in the space enclosed by the second frame, and the third frame can be placed in the space enclosed by the fourth frame.

Further, it is characterized in that the first frame and the second frame are rotatably connected through a first uniaxial rotating member, and the third frame and the fourth frame are rotatably connected through a second uniaxial rotating member. The two ends of the first uniaxial rotating member are respectively fixedly connected with the second frame and the third frame, and the two ends of the second uniaxial rotating member are respectively connected with the third frame and the third frame. The fourth frame is fixedly connected.

Further, both the first uniaxial rotating member and the second uniaxial rotating member include: a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are hinged at the overlapping position .

Further, it also includes: a first reinforcement hoop and a second reinforcement hoop, the first reinforcement hoop is detachably connected to the second frame and the third frame, and the second reinforcement hoop is connected to the The third frame and the fourth frame are detachably connected.

Further, the first reinforcing hoop and the second reinforcing hoop both include: an L-shaped rotating part and a U-shaped tightening part, the rotating part and the tightening part are fixedly connected, and the rotating part is The rotating part is rotatably connected with the base, and the rotating part and the holding part are respectively clamped on the base.

Further, the rotating part and the holding part are integrally formed.

Further, the turning device is provided between the bed board and the base, and the turning device is used to drive the back board and/or the leg board to turn over relative to the base.

Further, the inversion device includes: a first inversion device and a second inversion mechanism, the first inversion device is provided between the back plate and the first frame, and the second inversion mechanism is provided in the between the leg board, the foot board, the third frame and the fourth frame; wherein, the first turning device and the second turning mechanism both include: two sliding rods, a turning rod and The driving part; two sliding rods are respectively arranged at the two ends of the flip rod in an H-shaped shape; the middle part of the sliding rod protrudes toward the bed board and is in an obtuse V-shaped shape, and the head of the sliding rod is provided with a rotatable first A roller, the middle part of the sliding rod is provided with a second rotatable roller, the tail part of the sliding rod is hinged with the base; the flip rod is located between the middle part of the sliding rod and the tail part of the sliding rod ; The two ends of the driving member are hinged with the turning rod and the base respectively, and the horizontal direction of the thrust of the driving member is the same as the horizontal direction from the first roller to the second roller; the first roller The horizontal direction of the second roller points to the rotation axis of the turning device driving the bed plate where it is located; the first roller, the second roller, the sliding rod, the head plate, the back plate and all the The rotation axes of the six leg plates are parallel to each other.

Further, according to the following formula (1) and formula (2), adjust the length and position of the gravity arm, the first resistance arm and the second resistance arm in the horizontal direction of the turning device in the state of laying flat, so as to reduce each turning The length of the power arm in the vertical direction of the device in the flat state:

F1=(G×L3)÷L1 (1);

L2>(F1×L4)÷F (2);

Among them, L1 represents the first resistance arm, L2 represents the power arm, L3 represents the gravity arm, L4 represents the second resistance arm, G represents the bed load, F represents the thrust, and F1 represents the resistance;

Wherein, the first resistance arm is above the second resistance arm.

Further, the back plate, the leg plate and the foot plate are all provided with hollow holes, and the hollow holes are located above the driving components.

Further, the driving component is a linear push rod.

Further, the linear push rod is a push-only type.

Further, it also includes: sliding rails, the sliding rails are arranged in the back panel and the leg panel and are matched with the corresponding first rollers and the second rollers.

Further, the slide rail includes: a U-shaped slideway, the top edges of the two side walls of the slideway extend in opposite directions to form a slideway connection portion, the bed board is provided with a through hole, and the slideway is located in the In the through hole, the slideway connecting part is connected with the bottom surface of the bed board.

The present invention reduces the size after folding through the four-fold design, meets the 130" UPS transportation standard, reduces transportation costs, and enhances market competitiveness.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

1 is a schematic structural diagram of an incompletely folded state of a four-folding electric bed according to an embodiment of the present invention;

2 is a side view of a changing state of a four-folding electric bed according to an embodiment of the present invention;

3 is a bottom view of a four-folding electric bed according to an embodiment of the present invention;

4 is a schematic structural diagram of a folded state of a four-folding electric bed according to an embodiment of the present invention;

5 is a perspective view of part A in a folded state of a four-folding electric bed according to an embodiment of the present invention;

6 is a schematic structural diagram of a semi-folded state of a four-folding electric bed according to an embodiment of the present invention;

Fig. 7 is the exploded view of B part in the embodiment of the present invention;

Fig. 8 is the exploded view of C part in the embodiment of the present invention;

9 is a partial enlarged view of the turning device in the embodiment of the present invention;

FIG. 10 is a schematic diagram of the force arm of the overturning mechanism in the embodiment of the present invention;

FIG. 11 is an exploded view of part C in the embodiment of the present invention.

Description of reference numbers:

0a-header, 0b-tail;

1-base, 11-first frame, 12-second frame, 13-third frame, 14-fourth frame;

2-bed board, 21-head board, 22-back board, 23-hip board, 24-leg board, 25-foot board, 221-limiting piece;

3-turning device, 3a-first turning device, 3b-second turning device, 31-slide bar, 32-turning bar, 33-driving part, 311-first roller, 312-second roller;

4- biaxial rotating parts, 41- bearing part, 42- extension part;

5- Reinforcing sheet;

6a-first connection board, 6b-second connection board;

7a-first reinforcing hoop, 7b-second reinforcing hoop, 71-rotating part, 72-clamping part;

8- Hollow hole;

9-slide rail, 91-slide, 92-slide connection.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings.

1 is a schematic structural diagram of a four-folding electric bed in an incompletely folded state according to an embodiment of the present invention, FIG. 2 is a side view of a four-folding electric bed in a changed state according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. A bottom view of a four-folding electric bed, and FIG. 4 is a schematic diagram of a folded state structure of a four-folding electric bed according to an embodiment of the present invention. As shown in FIGS. 1 to 4 , the four-folding electric bed provided by the present invention includes: a base 1. The bed board 2 and the turning device 3, the bed board 2 is laid flat on the top of the base 1, and the turning device 3 is used to drive a part of the bed board 2 to turn over relative to the base 1; wherein, the base 1 includes: a first frame 11, a second frame 12 , the third frame 13 and the fourth frame 14, the first frame 11, the second frame 12, the third frame 13 and the fourth frame 14 are rotatably connected or detachably connected at the junction in sequence; the bed board 2 includes: a back board 22 , buttock plate 23, leg plate 24 and foot plate 25; back plate 22, buttock plate 23, leg plate 24 and foot plate 25 are respectively provided in the first frame 11, the second frame 12, the third frame 13 and The top of the fourth frame 14; the tail 0b of the back panel 22 is hinged with the tail 0b of the first frame 11, and the head 0a of the leg panel 24 is hinged with the head 0a of the third frame 13.

The packaging size of the electric bed generally depends on the size of the bed board 2 and the base 1. The volume of the turning device 3 is small, and can be controlled by design between the bed board 2 and the base 1 or after being dismantled and then packaged. Dividing the bed board 2 and the base 1 into multiple parts and then folding them can greatly reduce the packaging size of the electric bed, but the cost and manufacturing difficulty are difficult to control.

In the present invention, the bed board 2 is divided into five parts, and the base 1 is divided into four parts. The tops of the three frames 13 and the fourth frame 14 only need to control the spacing between the adjacent two of the first frame 11 , the second frame 12 , the third frame 13 and the fourth frame 14 to ensure that they can be folded. Meet the 130" UPS transportation standard, reduce transportation costs and enhance market competitiveness.

Further, the bed board further includes: a head board 21, and the head board 21 and the back board 22 are rotatably connected or detachably connected at the junction.

The head panel 21 and the back panel 22 are rotatably connected or detachably connected without interfering with the base 1. After the other parts are folded, the head panel 21 can be placed in the folding direction of the base 1, which can obtain standard The 2 area of the bed board helps to further reduce the size after folding. This solution can adapt to more types of electric beds, which is convenient to enrich the functions of the electric bed and has better versatility.

Preferably, the first frame 11 can be placed in the space enclosed by the second frame 12 , and the third frame 13 can be placed in the space enclosed by the fourth frame 14 .

After folding, the first frame 11 and the second frame 12 are in the same plane, and the third frame 13 and the fourth frame 14 are in the same plane, which reduces the thickness of the folded electric bed, further reduces the packaging size of the electric bed, and reduces shipping costs.

Further, FIG. 5 is a perspective view of part A in a folded state of a four-folding electric bed according to an embodiment of the present invention. As shown in FIGS. 3 and 5 , the back panel 22 further includes: a limiter 221 , a limiter 221 It is used to restrict the rotation of the head plate 21 relative to the back plate 22 .

A limiter 221 is added on the back panel 22, so that the head panel 21 and the back panel 22 are connected as a whole, the area of the back panel 22 is enlarged, and there is no need to add a bed foot for support, which is convenient and quick to fold.

Preferably, as shown in FIG. 5 , the limiting member 221 includes: at least one baffle, which is rotatably connected to the back panel 22 ; when the head panel 21 is rotatable, the baffle is in the vertical projection of the back panel 22 ; When the head plate 21 is not rotatable, the baffle is in the vertical projection of the back plate 22 and the head plate 21 at the same time.

When folded, rotate the baffle to disengage the baffle from the head plate 21, and no longer interfere with the rotation of the head plate 21; when in use, make the head plate 21 and the back plate 22 in the same plane, and then rotate the baffle to make the baffle The plate is engaged with the head plate 21 to restrict the rotation of the head plate 21 relative to the back plate 22 , and the head plate 21 and the back plate 22 are integrally connected. Preferably, they are arranged on both sides of the back panel 22 in pairs, which can better bear the load. The technical solution is convenient and quick to fold and unfold, and is simple and practical.

Preferably, the limiting member 221 includes: at least one latch, which is arranged on the back panel 22 and can telescopically move relative to the head panel 21; when the head panel 21 is rotatable, the latch is in the vertical projection of the back panel 22; When the head plate 21 is not rotatable, the latch is located in the vertical projection of the back plate 22 and the head plate 21 at the same time.

When folded, retract the latch to disengage the latch from the head panel 21 and no longer interfere with the rotation of the head panel 21; when in use, make the head panel 21 and the back panel 22 in the same plane, and extend the latch so that the latch and the head panel 21 are in the same plane. The top plate 21 is engaged to restrict the rotation of the head plate 21 relative to the back plate 22 , and the head plate 21 and the back plate 22 are integrated into one. Preferably, they are arranged on both sides of the back panel 22 in pairs, which can better bear the load. The technical solution is convenient and quick to fold and unfold, and is simple and practical.

Further, FIG. 6 is a schematic structural diagram of a semi-folded state of a four-folding electric bed according to an embodiment of the present invention. As shown in FIG. 6 , the second frame 12 and the third frame 13 are rotatably connected through the biaxial rotating member 4, Both ends of the biaxial rotating member 4 are hinged with the second frame 12 and the third frame 13 respectively.

Pairs of biaxial rotating members 4 are arranged at the junction of the second frame 12 and the third frame 13. The second frame 12 and the third frame 13 rotate along different rotation axes respectively, do not interfere with each other, and are convenient for bidirectional folding, and The thickness of the electric bed after folding is limited, which is convenient for folding, avoids squeezing and damaging the internal parts after folding, and prevents damage.

Specifically, FIG. 7 is an exploded view of part B in the embodiment of the present invention. As shown in FIG. 7 , the biaxial rotating member 4 includes: a load-bearing part 41 and two extension parts 42 ; The two extending parts 42 have different extending surfaces; the two extending parts 42 are hinged with the second frame 12 and the third frame 13 respectively.

The purpose of this design is to use less material to achieve higher strength under the current structure. Through structural adjustment, this part can be changed accordingly, and it is helpful to further reduce the weight of the electric bed and reduce material and transportation costs.

Preferably, the hip panels 23 and/or the leg panels 24 are provided with openings that match the biaxial rotating member 4 .

After folding, the biaxial rotating member 4 crosses the openings on the hip panel 23 and/or the leg panel 24 to prevent them from interfering with each other and affecting the folding. In this way, the length of the double-axis rotating member 4 can be shortened as much as possible to control the length of the electric bed, thereby reducing the longitudinal and transverse lengths of the electric bed after folding, and further reducing the packaging size of the electric bed, in order to enrich the functions of the electric bed By leaving more space, more components can be assembled in the factory, reducing transportation and installation costs, facilitating quick installation and use, and further improving versatility.

Specifically, the head portion 0a of the first frame 11 , the tail portion 0b of the second frame 12 and the bottom of the load-bearing portion 41 are provided with a plurality of bed foot connecting holes.

The connection holes of the bed feet are used to install the bed feet. The specific number is selected according to the shape and weight of the bed body, which can meet the needs of supporting the electric bed, and realize the rapid installation without tools.

Further, as shown in FIG. 3 and FIG. 7, it also includes: a concave-shaped reinforcing sheet 5, the two side walls of the reinforcing sheet 5 can be respectively connected with the side edges of the second frame 12 and the third frame 13, and the reinforcing sheet 5 is connected to the load-bearing The bottom of the part 41 is attached and is provided with a through hole matching the connection hole of the bed foot.

The reinforcing sheet 5 is used to limit the relative displacement between the second frame 12 , the third frame 13 and the biaxial rotating member 4 , and strengthen the support, prevent sag, and prolong the life of the product.

Further, FIG. 8 is an exploded view of the C part in the embodiment of the present invention. As shown in FIG. 8 , the first frame 11 and the second frame 12 are rotatably connected by the first uniaxial rotating member, and the third frame 13 and the fourth frame 12 are rotatably connected. The frame 14 is rotatably connected by the second uniaxial rotating member; the two ends of the first uniaxial rotating member are respectively fixedly connected with the second frame 12 and the third frame 13, and the two ends of the second uniaxial rotating member are respectively connected with the third frame 13. The frame 13 and the fourth frame 14 are fixedly connected.

By adding a pair of first uniaxial rotating members and a pair of second uniaxial rotating members at the adjacent positions of the first frame 11 and the second frame 12, the third frame 13 and the fourth frame 14, it is best to set them in On both sides of the base 1, the force distribution is more uniform, and at the same time, the first frame 11 and the second frame 12, the third frame 13 and the fourth frame 14 are not directly hinged. The versatility of components and easier maintenance when the hinge is damaged, eliminating the need to replace the entire bed frame, reducing maintenance costs.

Specifically, both the first uniaxial rotating member and the second uniaxial rotating member include: a first connecting plate 6a and a second connecting plate 6b, and the first connecting plate 6a and the second connecting plate 6b are hinged at the overlapping position.

The technical solution is relatively simple to produce and install, with low cost and strong practicability.

Further, as shown in Figure 3, it also includes: a first reinforcing hoop 7a and a second reinforcing hoop 7b, the first reinforcing hoop 7a is detachably connected to the first frame 11 and the second frame 12, and the second reinforcing hoop 7a is detachably connected to the first frame 11 and the second frame 12. The hoop 7b is detachably connected to the third frame 13 and the fourth frame 14 .

It is used to strengthen the connection between the first frame 11 and the second frame 12, the third frame 13 and the fourth frame 14, prevent sag, and prolong the service life of the electric bed.

Preferably, both the first reinforcing hoop 7a and the second reinforcing hoop 7b include: an L-shaped rotating portion 71 and a U-shaped tightening portion 72, the rotating portion 71 and the tightening portion 72 are fixedly connected, and the rotating portion 71 is connected to the base 1. Rotating connection, the rotating part 71 and the holding part 72 are respectively engaged with the base 1.

In addition to strengthening the connection, the holding part 72 can also cooperate with the rotating part 71 . When folded, the connection between the holding part 72 and the base 1 is removed, and the first reinforcing hoop 7a and the second reinforcing hoop 7b can be rotated relative to the base 1 through the rotating connection between the rotating part 71 and the base 1, and the first reinforcing hoop 7a and the second reinforcing hoop 7b can be rotated relative to the base 1. The reinforcement hoop 7a and the second reinforcement hoop 7b restrict the folding of the corresponding parts, and there is no need to remove the first reinforcement hoop 7a and the second reinforcement hoop 7b; during use, rotate the first reinforcement hoop 7a and the second reinforcement hoop 7b. The hoop 7b completes the restriction of the corresponding parts, so that the corresponding parts are integrated. Simple and practical, convenient and quick disassembly and assembly, reducing the time and labor cost of on-site installation.

Preferably, the rotating part 71 and the holding part 72 are integrally formed. This helps to improve the strength of the first reinforcing hoop 7a and the second reinforcing hoop 7b.

Preferably, a turning device 3 is provided between the bed board 2 and the base 1 , and the turning device 3 is used to drive the back board 22 and/or the leg board 24 to turn relative to the base 1 .

By changing the angle of the back panel 22 and/or the leg panel 24, the physiological curves of different parts of the human body are satisfied, the human body is better supported, the body is relaxed, and the user is given a better experience.

Further, FIG. 9 is a partial enlarged view of the inversion device in the embodiment of the present invention. As shown in FIGS. 2 and 9 , the inversion device 3 includes: a first inversion device 3a and a second inversion device 3b, and the first inversion device 3a is provided with Between the back plate 22 and the first frame 11, the second turning device 3b is arranged between the leg plate 24, the foot plate 25, the third frame 13 and the fourth frame 14; The two flipping devices 3b each include: two sliding rods 31, a flipping rod 32 and a driving part 33; the two sliding rods 31 are respectively arranged at both ends of the flipping rod 32 in an H-like shape; the middle of the sliding rod 31 protrudes toward the bed board 2 in a shape Obtuse V-shaped, the head 0a of the sliding rod 31 is provided with a rotatable first roller 311, the middle of the sliding rod 31 is provided with a rotatable second roller 312, and the tail 0b of the sliding rod 31 is hinged with the base 1; Between the middle part of the sliding rod 31 and the tail part 0b of the sliding rod 31; the two ends of the driving member 33 are hinged with the flip rod 32 and the base 1 respectively, and the horizontal direction of the thrust of the driving member 33 is the same as that of the first roller 311 to the second roller 312. The direction is the same; the horizontal direction of the first roller 311 to the second roller 312 points to the rotation axis of the turning device 3 where it is located to drive the bed board 2; the first roller 311, the second roller 312, the sliding rod 31, the head board 21, the back board The axes of rotation of the six

leg plates

22 and 24 are parallel to each other.

The sliding rod 31 is hinged with the base 1 , and the sliding rod 31 adopts a curved structure, that is, the middle part has an obtuse angle, and the obtuse angle is 120° to 170°. When the driving part 33 pushes the bed board 2 to turn over, the turning rod 32 drives the sliding rod 31 to rotate with the hinge point of the sliding rod 31 and the base 1 as the rotation axis, and the second roller 312 rolls on the bottom surface of the corresponding bed board 2 to push the corresponding bed board 2 relative to the base 1. Turn up, when the pushed bed board 2 is turned to 20° to 30° relative to the base 1, the first roller 311 is in contact with the bottom surface of the bed board 2 and rolls on its bottom surface. When there is only one roller, the support assembly is turned 20° to 30°. At 30°, there will be a very large resistance. Adding another roller can overcome this resistance and ensure the smooth turning of the bed board 2, and the structure of the driving device reduces the thickness of the smart bed and makes the smart bed thinner.

In addition, each turning device 3 is not connected to the bed board 2. Once an object prevents the lifted bed board 2 from falling, the turning device 3 and the bed board 2 change from a contact state to a non-contact state to prevent pinching.

Preferably, a reinforcing plate 313 is provided at the included angle between the sliding rod 31 and the turning rod 32 . The connection strength between the sliding rod 31 and the turning rod 32 is enhanced, and the strength of the turning device is improved. The sliding rod 31 and the reinforcing plate 313 are both sheet-shaped, and the mass and volume of the components can be reduced as much as possible without affecting the realization of the function, which helps to reduce the quality and volume of the intelligent bed.

Preferably, a U-shaped lug 321 is fixed on the turning rod 32, and the driving part 33 is hinged with the turning rod 32 through the U-shaped lug 321, which is strong and durable, and is convenient for production and composition.

Preferably, FIG. 10 is a schematic diagram of the force arm of the turning mechanism in the embodiment of the present invention. As shown in FIG. 10 , according to the following formulas (1) and (2), adjust the horizontal gravity arm, The length and position of the first resistance arm and the second resistance arm to reduce the length of the power arm in the vertical direction of each turning device 3 in the horizontal state:

F1=(G×L3)÷L1 (1);

L2>(F1×L4)÷F (2);

Among them, L1 represents the first resistance arm, L2 represents the power arm, L3 represents the gravity arm, L4 represents the second resistance arm, G represents the load of the bed 2, F represents the thrust, and F1 represents the resistance;

Wherein, the first resistance arm is above the second resistance arm.

The resistance F1 is the force perpendicular to the base 120 from the contact point between the second roller 312 and the slide rail 9 , the load G is the gravity perpendicular to the midpoint of the bed board 2 in contact with the second roller 312 , and the gravity arm L3 is in contact with the second roller 312 The straight line distance from the midpoint of the bed board 2 to the rotation axis of the bed board 2, the resistance arm L1 is the straight line distance from the contact point between the second roller 312 and the bed board 2 to the rotation axis of the bed board 2, and the power arm L2 is from the sliding rod 31 and the base 1. The straight-line distance from the hinge point to the extension line of the thrust F.

The length of the power arm L2 is proportional to the thickness of the turning device 3 , that is, the shorter the length of the power arm L2 is, the thinner the turning device 3 is, which in turn affects the thickness of the smart bed. For example, increase the length of the first resistance arm, decrease the length of the gravity arm to reduce the resistance, and in the case of reducing the resistance, reduce the length of the second resistance arm to further reduce the length of the power arm, etc. When F<3000N, G>1285N, that is, when the intelligent bed bears the weight of the human body, through the force analysis, simulate changing the position of the force arm, calculate the change of the force, find the best force arm, and optimize the structure of the force arm of the intelligent bed , reduce the thickness of the smart bed, make it thinner, effectively control the volume of the smart bed, and reduce transportation costs.

Further, as shown in FIG. 3 , the back plate 22 , the leg plate 24 and the foot plate 25 are all provided with hollow holes 8 , and the hollow holes 8 are located above the driving component 33 .

Hollow holes 8 can be provided on each bed board 2 , and the size and arrangement of the hollow holes 8 can be set as required. The hollow hole 8 can reduce the weight of the smart bed, avoid rubbing with the driving part 33, and can also accommodate the hinged part of the driving part 33 and the turning rod 32, further reducing the thickness of the smart bed.

Preferably, the driving member 33 is a linear push rod.

The linear push rod has a low cost, is convenient to control the volume of the intelligent bed, and is simple and practical.

Preferably, the linear push rod is of the push-only type.

The push-only linear push rod only outputs the thrust force, but the output pull force, that is to say, the bed board 2 only relies on gravity to fall in the process of descending. It can completely avoid the danger of pinching caused by the bed board 2 and the turning device 3.

Further, FIG. 11 is an exploded view of the C part in the embodiment of the present invention. As shown in FIG. 11 , it also includes: slide rails 9 . The slide rails 9 are arranged in the back panel 22 and the leg panels 24 and are connected with the corresponding first rollers. 311 and the second roller 312 are matched.

The slide rail 9 can be arranged in the bed board 2, the closer the top of the slide rail 9 is to the top surface of the bed board 2, the thinner the overall thickness of the electric bed; the slide rail 9 can be made of wear-resistant materials such as metal to avoid long-term contact between the rollers and the bed board 2 Produces wear and tear and increases product durability.

Preferably, the slide rail 9 includes: a U-shaped slideway 91 , the top edges of the two side walls of the slideway 91 extend in opposite directions to form a slideway connecting portion 92 , the bed board 2 is provided with a through hole, and the slideway 91 is located in the through hole , the slideway connecting part 92 is connected with the bottom surface of the bed board 2 .

The U-shaped slideway 91 limits the rollers in a specific direction to prevent displacement and prevent the rollers from being damaged; the slideway connecting portion 92 is used to increase the contact area between the slide rail 9 and the bed board 2, and prevent the local pressure from being too large to damage the bed board 2, Extend product life.

Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or techniques in the art not disclosed by this disclosure . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

It should be understood that the present invention is not limited to the precise structures described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from its scope.

Claims

A four-folding electric bed, characterized in that it comprises: a base, a bed board and a turning device, the bed board is laid flat on the top of the base, and the turning device is used to drive a part of the bed board to turn over relative to the base ;in,

The base includes: a first frame, a second frame, a third frame and a fourth frame, and the first frame, the second frame, the third frame and the fourth frame can be sequentially connected at the junction. Rotary connection or detachable connection;

The bed board includes: a back board, a hip board, a leg board and a foot board;

the back panel, the buttocks panel, the leg panel and the foot panel are respectively arranged on tops of the first frame, the second frame, the third frame and the fourth frame;

The tail of the back panel is hinged with the tail of the first frame, and the head of the leg panel is hinged with the head of the third frame.
The four-folding electric bed according to claim 1, wherein the bed board further comprises: a head board, and the head board and the back board are rotatably connected or detachably connected at the junction.
The four-folding electric bed according to claim 2, wherein the back panel further comprises: a limiting member, the limiting member is used to limit the rotation of the head panel relative to the back panel.
The four-folding electric bed according to claim 3, wherein the limiting member comprises: at least one baffle, the baffle is rotatably connected to the back plate;

When the head plate is rotatable, the baffle is in the vertical projection of the back plate;

When the head plate is not rotatable, the baffle is in the vertical projection of the back plate and the head plate at the same time.
The four-folding electric bed according to claim 3, wherein the limiting member comprises: at least one latch, the latch is arranged on the back panel and can be telescopically moved relative to the head panel;

When the head plate is rotatable, the latch is in the vertical projection of the back plate;

When the head plate is not rotatable, the latch is in the vertical projection of both the back plate and the head plate.
The four-folding electric bed according to claim 1 or 2, wherein the second frame and the third frame are rotatably connected by a biaxial rotating member, and two ends of the biaxial rotating member are respectively connected to the The second frame and the third frame are hinged.
The four-folding electric bed according to claim 6, wherein the biaxial rotating member comprises: a load-bearing part and two extension parts;

Wherein, the two extension parts extend in opposite directions with the load-bearing part as the center, and the extension surfaces of the two extension parts are different;

The two extensions are hinged with the second frame and the third frame, respectively.
The four-folding electric bed according to claim 7, wherein the hip plate and/or the leg plate is provided with an opening matching the biaxial rotating member.
The four-folding electric bed according to claim 7, wherein a plurality of bed foot connecting holes are provided at the head portion of the first frame, the tail portion of the second frame and the bottom of the load-bearing portion.
The four-folding electric bed according to claim 9, further comprising: a concave-shaped reinforcing sheet, two side walls of the reinforcing sheet are respectively attached to the side edges of the second frame and the third frame In combination, the reinforcing sheet is attached to the bottom of the load-bearing portion and is provided with a through hole matching the connecting hole of the bed foot.
The four-folding electric bed according to any one of claims 1 to 5, wherein the first frame can be placed in the space enclosed by the second frame, and the third frame can be placed in the space enclosed by the second frame. within the space enclosed by the fourth frame.
The four-folding electric bed according to any one of claims 1 to 5, wherein the first frame and the second frame are rotatably connected through a first uniaxial rotating member, and the third frame rotatably connected with the fourth frame through a second uniaxial rotating member;

Both ends of the first uniaxial rotating member are respectively fixedly connected to the second frame and the third frame, and both ends of the second uniaxial rotating member are respectively connected to the third frame and the fourth frame. Frame fixed connection.
The four-folding electric bed according to claim 12, wherein the first uniaxial rotating member and the second uniaxial rotating member both comprise: a first connecting plate, a second connecting plate, the first connecting plate The connecting plate and the second connecting plate are hinged at the overlapping position.
The four-folding electric bed according to claim 13, further comprising: a first reinforcement hoop and a second reinforcement hoop, the first reinforcement hoop and the second frame and the third frame Removably connected, the second reinforcing hoop is detachably connected with the third frame and the fourth frame.
The four-folding electric bed according to claim 14, wherein the first reinforcing hoop and the second reinforcing hoop both comprise: an L-shaped rotating part and a U-shaped tightening part, and the rotating The rotating part is fixedly connected with the tightening part, the rotating part is rotatably connected with the base, and the rotating part and the tightening part are respectively clamped on the base.
The four-folding electric bed according to claim 15, wherein the rotating part and the holding part are integrally formed.
The four-folding electric bed according to any one of claims 1 to 5, wherein the turning device is provided between the bed board and the base, and the turning device is used to drive the back board and the base. /or the leg panels are flipped relative to the base.
The four-folding electric bed according to claim 17, wherein the inversion device comprises: a first inversion device and a second inversion mechanism, and the first inversion device is provided on the back panel and the first frame in between, the second turning mechanism is arranged between the leg board, the foot board, the third frame and the fourth frame;

Wherein, the first overturning device and the second overturning mechanism both include: two sliding rods, a flipping rod and a driving component;

The two sliding rods are respectively arranged at the two ends of the turning rod to form an H-shaped shape;

The middle part of the sliding rod protrudes toward the bed board in an obtuse V-shape, the head of the sliding rod is provided with a rotatable first roller, the middle part of the sliding rod is provided with a rotatable second roller, and the sliding rod is provided with a rotatable second roller. The tail is hinged with the base;

the turning rod is located between the middle part of the sliding rod and the tail part of the sliding rod;

Both ends of the driving member are hinged with the turning rod and the base respectively, and the horizontal direction of the thrust of the driving member is the same as the horizontal direction from the first roller to the second roller;

The horizontal direction from the first roller to the second roller points to the rotation axis of the turning device driving the bed plate where it is located;

The rotation axes of the first roller, the second roller, the sliding rod, the head panel, the back panel and the leg panel are parallel to each other.
The four-folding electric bed according to claim 17, wherein the horizontal gravity arm, the first resistance arm and the first resistance arm of the turning device are adjusted according to the following formulas (1) and (2). The length and position of the two resistance arms to reduce the length of the power arm in the vertical direction of each turning device in the horizontal state:

F1=(G×L3)÷L1 (1);

L2>(F1×L4)÷F (2);

Among them, L1 represents the first resistance arm, L2 represents the power arm, L3 represents the gravity arm, L4 represents the second resistance arm, G represents the bed load, F represents the thrust, and F1 represents the resistance;

Wherein, the first resistance arm is above the second resistance arm.
The four-folding electric bed according to claim 18, wherein the back plate, the leg plate and the foot plate are all provided with hollow holes, and the hollow holes are located above the driving components.
The four-folding electric bed according to claim 18, wherein the driving component is a linear push rod.
The four-folding electric bed according to claim 21, wherein the linear push rod is a push-only type.
The four-folding electric bed according to claim 18, further comprising: sliding rails, the sliding rails are arranged in the back panel and the leg panel and are connected with the corresponding first rollers and all the match the second scroll wheel.
The four-folding electric bed according to claim 23, wherein the slide rail comprises: a U-shaped slideway, and the top edges of the two side walls of the slideway extend in opposite directions to form a slideway connection portion, so The bed board is provided with a through hole, the slideway is located in the through hole, and the slideway connecting part is connected with the bottom surface of the bed board.