CN214386879U

CN214386879U - Four-folding electric bed

Info

Publication number: CN214386879U
Application number: CN202022424927.1U
Authority: CN
Inventors: 单华锋; 王剑; 季川祥; 聂祥; 周擎
Original assignee: Keeson Technology Corp Ltd
Current assignee: Keeson Technology Corp Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-10-15
Anticipated expiration: 2030-10-27

Abstract

The utility model provides a pair of four folding beddo, include: the turnover device is used for driving a part of the bed board to turn over relative to the base; wherein, the base includes: the first frame, the second frame, the third frame and the fourth frame are connected in sequence at junctions in a rotatable or detachable mode; the bed board includes: a back panel, a hip panel, a leg panel and a foot panel; the back plate, the hip plate, the leg plate and the foot plate are respectively arranged at the tops of the first frame, the second frame, the third frame and the fourth frame; the tail part of the back plate is hinged with the tail part of the first frame, and the head part of the leg plate is hinged with the head part of the third frame. The utility model discloses a four folding designs reduce the size after folding, satisfy 130"UPS transportation standard, reduce the cost of transportation, reinforcing market competition.

Description

Four-folding electric bed

Technical Field

The utility model relates to an beddo technical field especially relates to a four folding beddo.

Background

UPS transportation in the American market is divided into two standards of 165 'and 130', the transportation cost difference is very large and is about four hundred yuan, and the existing profit margin is very considerable. The UPS package size is calculated by the package length +2 package width +2 package height, and the most common Queen size (1524x2032) bed after package is finished can not meet the UPS requirement. At present, the electric bed capable of being used for express delivery in the market only meets 165 'UPS transportation standard, and no electric bed capable of meeting 130' UPS transportation standard exists. Customers urgently need electric beds capable of meeting 130' UPS transportation standards to further reduce transportation costs.

SUMMERY OF THE UTILITY MODEL

The utility model provides a four folding beddo to solve the technical problem that prior art folding beddo can't satisfy 130"UPS transportation standard.

Therefore, the utility model provides a pair of four folding beddo, this four folding beddo includes: the bed plate is flatly paved on the top of the base, and the turnover device is used for driving a part of the bed plate to turn over relative to the base; wherein, the base includes: the first frame, the second frame, the third frame and the fourth frame are sequentially connected in a rotatable or detachable mode at junctions; the bed board includes: a back panel, a hip panel, a leg panel and a foot panel; the back plate, the hip plate, the leg plate and the foot plate are respectively arranged at the tops of the first frame, the second frame, the third frame and the fourth frame; the tail part of the back plate is hinged with the tail part of the first frame, and the head part of the leg plate is hinged with the head part of the third frame.

Further, the bed board still includes: the head plate and the back plate are rotatably connected or detachably connected at the junction.

Further, the back plate further includes: the limiting piece is used for limiting the head plate to rotate relative to the back plate.

Further, the stopper includes: at least one baffle rotatably connected to the back plate; when the head plate is rotatable, the baffle is positioned in the vertical projection of the back plate; when the head plate is not rotatable, the baffle is simultaneously positioned in the vertical projection of the back plate and the head plate.

Further, the stopper includes: the bolt is arranged on the back plate and can move telescopically relative to the head plate; when the head plate is rotatable, the bolt is positioned in the vertical projection of the back plate; when the head plate is not rotatable, the latch is simultaneously within the vertical projection of the back plate and the head plate.

Furthermore, the second frame and the third frame are rotatably connected through a double-shaft rotating part, and two ends of the double-shaft rotating part are respectively hinged with the second frame and the third frame.

Further, the biaxial rotation member includes: a load bearing portion and two extension portions; the two extending parts extend towards opposite directions by taking the bearing part as a center, and the extending surfaces of the two extending parts are different; the two extending parts are respectively hinged with the second frame and the third frame.

Further, the hip plate and/or the leg plate are provided with openings matching the biaxial rotation pieces.

Furthermore, a plurality of bed foot connecting holes are formed in the head part of the first frame, the tail part of the second frame and the bottom of the bearing part.

Further, still include: the reinforcing piece of character cut in bas-relief, the both sides wall of reinforcing piece respectively with the second frame with the side laminating of third frame, the reinforcing piece with the bottom laminating of bearing part is equipped with the through-hole that the footpost connecting hole matches.

Further, the first frame may be disposed in a space enclosed by the second frame, and the third frame may be disposed in a space enclosed by the fourth frame.

Further, the first frame and the second frame are rotatably connected by a first uniaxial rotating member, and the third frame and the fourth frame are rotatably connected by a second uniaxial rotating member; the both ends that first unipolar rotated the piece respectively with the second frame with third frame fixed connection, the both ends that second unipolar rotated the piece respectively with the third frame with fourth frame fixed connection.

Further, the first single-axis rotation piece and the second single-axis rotation piece each include: the connecting device comprises a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are hinged at an overlapping position.

Further, still include: the first hoop and the second hoop are strengthened, the first hoop is strengthened, the second frame and the third frame are detachably connected, and the second hoop is strengthened, the third frame and the fourth frame are detachably connected.

Further, the hoop is all strengthened to first enhancement staple bolt and the second includes: the rotation portion of L shape and the portion of hugging closely of U-shaped, the rotation portion with portion fixed connection hugs closely, the rotation portion with the base rotates to be connected, the rotation portion with it blocks respectively on the base to hug closely the portion.

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

Furthermore, the turnover device is arranged between the bed board and the base and used for driving the back board and/or the leg board to turn over relative to the base.

Further, the turning device includes: the first turnover device is arranged between the back plate and the first frame, and the second turnover device is arranged between the leg plate, the foot plate, the third frame and the fourth frame; wherein, first turning device and second tilting mechanism all include: two sliding rods, a turnover rod and a driving part; the two sliding rods are respectively arranged at the two ends of the turnover rod and are in an H-like shape; the middle part of the sliding rod protrudes towards the bed board to form an obtuse angle V shape, the head part 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 tail part of the sliding rod is hinged with the base; the overturning rod is positioned between the middle part of the sliding rod and the tail part of the sliding rod; two ends of the driving part are respectively hinged with the turnover rod and the base, and the horizontal direction of the thrust of the driving part 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 rotating axis of the turnover device where the first roller and the second roller are located to drive the bed plate; the rotation axes of the first roller, the second roller, the sliding rod, the head plate, the back plate and the leg plate are parallel to each other.

Further, the lengths and positions of the gravity arm, the first resistance arm and the second resistance arm of the turning device in the horizontal direction in the flat state are adjusted according to the following formula (1) and formula (2) to reduce the length of the power arm of each turning device in the vertical direction in the flat state:

F1＝(G×L3)÷L1 (1)；

L2>(F1×L4)÷F (2)；

wherein L1 denotes a first resistance arm, L2 denotes a power arm, L3 denotes a gravity arm, L4 denotes a second resistance arm, G denotes a bed plate load, F denotes a thrust force, and F1 denotes a resistance force;

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

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

Further, the driving part is a linear push rod.

Further, the linear push rod is push-only.

Further, still include: the sliding rails are arranged in the back plate and the leg plate and are matched with the corresponding first idler wheels and the corresponding second idler wheels.

Further, the slide rail includes: the slide of U-shaped, the topside of the both sides wall of slide extends towards opposite direction and forms the slide connecting portion, the bed board is equipped with the through-hole, the slide is located in the through-hole, the slide connecting portion with the bottom surface of bed board is connected.

The utility model discloses a four folding designs reduce the size after folding, satisfy 130"UPS transportation standard, reduce the cost of transportation, reinforcing market competition.

Drawings

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

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

fig. 2 is a side view of a four-fold electric bed according to an embodiment of the present invention;

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

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

fig. 5 is a partially enlarged view of the head plate in a folded state of the four-folding electric bed according to the embodiment of the present invention;

fig. 6 is a schematic structural view of a four-fold electric bed according to an embodiment of the present invention in a half-folded state;

FIG. 7 is a partial enlarged view of a dual-axis rotating member according to an embodiment of the present invention;

FIG. 8 is a partial enlarged view of the reinforced anchor ear according to the embodiment of the present invention;

fig. 9 is a partial enlarged view of the turning device according to the embodiment of the present invention;

FIG. 10 is a schematic view of the force arm of the turnover mechanism according to the embodiment of the present invention;

fig. 11 is a partial enlarged view of the slide rail according to the embodiment of the present invention.

Description of reference numerals:

0 a-header, 0 b-trailer;

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-limit piece;

3-turnover device, 3 a-first turnover device, 3 b-second turnover device, 31-sliding rod, 32-turnover rod, 33-driving component, 311-first roller, 312-second roller;

4-biaxial rotation member, 41-bearing part, 42-extension part;

5-reinforcing sheet;

6 a-a first connecting plate, 6 b-a second connecting plate;

7 a-a first reinforced hoop, 7 b-a second reinforced hoop, 71-a rotating part and 72-a holding part;

8-hollow holes;

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

Detailed Description

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

Fig. 1 is the utility model discloses incomplete fold condition structure schematic diagram, fig. 2 of a four folding electric bed of embodiment the utility model discloses a change state side view, fig. 3 of a four folding electric bed do the utility model discloses a bottom view, fig. 4 of a four folding electric bed do the utility model discloses a fold condition structure schematic diagram of a four folding electric bed, as shown in fig. 1 to fig. 4, the utility model provides a four folding electric bed includes: the bed plate 2 is flatly paved on the top of the base 1, and the turnover device 3 is used for driving the local part of the bed plate 2 to turn over relative to the base 1; wherein, base 1 includes: 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 junctions in sequence; the bed board 2 includes: a back panel 22, a hip panel 23, a leg panel 24 and a foot panel 25; a back plate 22, a hip plate 23, a leg plate 24 and a foot plate 25 are provided on the top of the first frame 11, the second frame 12, the third frame 13 and the fourth frame 14, respectively; the rear portion 0b of the back plate 22 is hinged to the rear portion 0b of the first frame 11, and the head portion 0a of the leg plate 24 is hinged to the head portion 0a of the third frame 13.

The packaging size of the electric bed generally depends on the sizes of the bed board 2 and the base 1, and the turnover device 3 has small volume and can be controlled by design to be packaged between the bed board 2 and the base 1 or after being disassembled. The bed board 2 and the base 1 are divided into a plurality of parts and then folded, so that the packaging size of the electric bed can be greatly reduced, but the cost and the manufacturing difficulty are difficult to control.

The utility model discloses divide into five parts with bed board 2, divide into four parts with base 1, back board 22, buttock board 23, shank board 24 and foot board 25 correspond the top that sets up at first frame 11, second frame 12, third frame 13 and fourth frame 14 respectively, only need control first frame 11, second frame 12, third frame 13 and fourth frame 14 adjacent interval between the two guarantee can fold. The UPS transportation standard of 130' is met, the transportation cost is reduced, and the market competitiveness is enhanced.

Further, the bed board still includes: the head plate 21, the head plate 21 and the back plate 22 are rotatably connected or detachably connected at the interface.

Head board 21 and back board 22 rotatable coupling or detachable connection, and do not take place to interfere with base 1, accomplish folding back in other positions, head board 21 can be placed in the folding direction of base 1, can enough obtain 2 areas of standard bed board, help further reducing the size after folding, and this scheme can adapt to the beddo of more models, is convenient for enrich the function of beddo, and the commonality is better.

Preferably, the first frame 11 may be disposed within a space enclosed by the second frame 12, and the third frame 13 may be disposed within a 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, so that the thickness of the folded electric bed is reduced, the packaging size of the electric bed is further reduced, and the transportation cost is reduced.

Further, fig. 5 is a partial enlarged view of the head plate in the folded state of the four-folding electric bed according to the embodiment of the present invention, as shown in fig. 3 and 5, the back plate 22 further includes: and a stopper 221, the stopper 221 being configured to restrict the rotation of the head plate 21 with respect to the back plate 22.

The limiting part 221 is additionally arranged on the back plate 22, so that the head plate 21 and the back plate 22 are connected into a whole, the area of the back plate 22 is enlarged, and the bed legs do not need to be newly added for supporting, and the folding is convenient and rapid.

Preferably, as shown in fig. 5, the limiting member 221 includes: at least one baffle rotatably connected to the back plate 22; when the head plate 21 is rotatable, the baffle is in vertical projection with the back plate 22; when the head plate 21 is not rotatable, the baffle is simultaneously in vertical projection with the back plate 22 and the head plate 21.

When the folding machine is folded, the baffle is rotated to separate the baffle from the head plate 21, and the baffle does not interfere with the rotation of the head plate 21; when the folding seat is used, the head plate 21 and the back plate 22 are positioned in the same plane, and then the baffle is rotated to be engaged with the head plate 21, so that the rotation of the head plate 21 relative to the back plate 22 is limited, and the head plate 21 and the back plate 22 are connected into a whole. Preferably in pairs on both sides of the back plate 22 to better support the load. The technical scheme is convenient, rapid to fold and unfold, simple and practical.

Preferably, the stopper 221 includes: at least one bolt which is arranged on the back plate 22 and can move telescopically relative to the head plate 21; when the head plate 21 is rotatable, the latch is in the vertical projection of the back plate 22; when the head plate 21 is non-rotatable, the latch is in the vertical projection of both the back plate 22 and the head plate 21.

When folded, the latch is retracted so that the latch disengages from the head plate 21 and no longer interferes with the rotation of the head plate 21; when the device is used, the head plate 21 and the back plate 22 are in the same plane, the bolt is extended to enable the bolt to be clamped with the head plate 21, the rotation of the head plate 21 relative to the back plate 22 is limited, and the head plate 21 and the back plate 22 are connected into a whole. Preferably in pairs on both sides of the back plate 22 to better support the load. The technical scheme is convenient, rapid to fold and unfold, simple and practical.

Further, fig. 6 is a schematic structural diagram of a half-folding 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 dual-axis rotating member 4, and two ends of the dual-axis rotating member 4 are respectively hinged to the second frame 12 and the third frame 13.

Second frame 12 and third frame 13 juncture set up mated biax and rotate piece 4, and second frame 12 and third frame 13 rotate along the axis of rotation of difference respectively, mutual noninterference each other, and convenient two-way folding has just injectd the thickness of folding back beddo, and convenient folding avoids folding back extrusion damage inside spare part, prevents to damage.

Specifically, fig. 7 is a partial enlarged view of the dual-axis rotation member according to the embodiment of the present invention, and as shown in fig. 7, the dual-axis rotation member 4 includes: a load bearing part 41 and two extensions 42; wherein, the two extending portions 42 extend in opposite directions with the bearing portion 41 as the center, and the extending surfaces of the two extending portions 42 are different; the two extensions 42 are hinged to the second frame 12 and the third frame 13, respectively.

The purpose of this design is to use less material to reach higher intensity under current structure, and through structure adjustment, this part can make corresponding change, and help further reduce the weight of beddo, reduce material and transportation cost.

Preferably, the hip plate 23 and/or the leg plate 24 are provided with openings matching the biaxial rotation element 4.

After folding, the biaxial rotation member 4 crosses the opening on the hip plate 23 and/or the leg plate 24, preventing them from interfering with each other and affecting folding, such as being unable to fold without opening. Like this, can contract the biax as far as and rotate the length of piece 4, control the length of beddo, and then reduce the beddo after folding length vertically and transversely on, further reduce the packing size of beddo, reserve more spaces for richening the function of beddo, just can accomplish the equipment of more parts in the mill, reduce transportation and installation cost, convenient quick installation and use, the commonality further promotes.

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 foot attachment holes.

The bed foot connecting hole is used for installing the bed foot, and specific quantity is selected according to bed body shape and weight, and the demand that satisfies the support beddo can, realize exempting from the quick installation of instrument.

Further, as shown in fig. 3 and 7, the method further includes: the reinforcing piece 5 is in a concave shape, two side walls of the reinforcing piece 5 are respectively matched with the side edges of the second frame 12 and the third frame 13, and the reinforcing piece 5 is attached to the bottom of the bearing part 41 and is provided with a through hole matched with the connecting hole of the bed leg.

The reinforcing plate 5 serves to restrict relative displacement between the second frame 12, the third frame 13 and the biaxial rotation member 4 and to reinforce the support, prevent sagging from occurring, and prolong the life of the product.

Further, fig. 8 is a partial enlarged view of the reinforcement hoop 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 a first single-axis rotating member, and the third frame 13 and the fourth frame 14 are rotatably connected by a second single-axis rotating member; the two ends of the first single-shaft rotating part are fixedly connected with the second frame 12 and the third frame 13 respectively, and the two ends of the second single-shaft rotating part are fixedly connected with the third frame 13 and the fourth frame 14 respectively.

Through at first frame 11 and second frame 12, third frame 13 and fourth frame 14 adjacent position add mated first unipolar and rotate piece and mated second unipolar and rotate the piece, preferably set up the both sides at base 1, the atress distributes more evenly, avoid first frame 11 and second frame 12 simultaneously, third frame 13 directly articulates with fourth frame 14, the convenient interval of adjusting according to the demand, when guaranteeing fully folding, improve the commonality of spare part, and it is more convenient to maintain when articulated damaging, need not to change whole bedstead, reduce the maintenance cost.

Specifically, first single-axis rotation piece and second single-axis rotation piece all include: a first connecting plate 6a and a second connecting plate 6b, wherein the first connecting plate 6a and the second connecting plate 6b are hinged at the overlapping position.

The technical scheme has the advantages of simple and convenient production and installation, low cost and strong practicability.

Further, as shown in fig. 3, the method further includes: the first reinforcing hoop 7a and the second reinforcing hoop 7b, the first reinforcing hoop 7a is detachably connected with the first frame 11 and the second frame 12, and the second reinforcing hoop 7b is detachably connected with the third frame 13 and the fourth frame 14.

The first frame 11 and the second frame 12, and the third frame 13 and the fourth frame 14 are connected to each other to reinforce each other, prevent sinking, and prolong the service life of the electric bed.

Preferably, the first reinforcing hoop 7a and the second reinforcing hoop 7b each include: the base comprises an L-shaped rotating portion 71 and a U-shaped holding portion 72, wherein the rotating portion 71 and the holding portion 72 are fixedly connected, the rotating portion 71 is rotatably connected with the base 1, and the rotating portion 71 and the holding portion 72 are respectively clamped on the base 1.

The clasping portion 72 may be engaged with the rotating portion 71 in addition to strengthening the connection. When the folding machine is folded, the connection between the clasping part 72 and the base 1 is removed, the first reinforcing hoop 7a and the second reinforcing hoop 7b can rotate relative to the base 1 through the rotating connection between the rotating part 71 and the base 1, the limitation of the folding of the corresponding parts by the first reinforcing hoop 7a and the second reinforcing hoop 7b is removed, and the first reinforcing hoop 7a and the second reinforcing hoop 7b do not need to be removed; when the device is used, the first reinforcing hoop 7a and the second reinforcing hoop 7b are rotated to limit the corresponding parts, so that the corresponding parts form a whole. Simple and practical, make things convenient for quick assembly disassembly, reduce the time and the cost of labor of on-the-spot installation.

Preferably, the rotating portion 71 and the clasping portion 72 are integrally formed. The strength of the first reinforcing hoop 7a and the second reinforcing hoop 7b is improved.

Preferably, a turnover device 3 is provided between the bed plate 2 and the base 1, the turnover device 3 being used for driving the back plate 22 and/or the leg plate 24 to turn over relative to the base 1.

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

Further, fig. 9 is a partial enlarged view of the turning device in the embodiment of the present invention, as shown in fig. 2 and 9, the turning device 3 includes: a first turnover device 3a and a second turnover device 3b, wherein the first turnover device 3a is arranged between the back plate 22 and the first frame 11, and the second turnover device 3b is arranged between the leg plate 24, the foot plate 25, the third frame 13 and the fourth frame 14; wherein the first and second turning devices 3a and 3b each comprise: two slide bars 31, a turn bar 32, and a drive part 33; the two sliding rods 31 are respectively arranged at the two ends of the turnover rod 32 and are in an H-like shape; the middle part of the sliding rod 31 protrudes towards the bed plate 2 to form an obtuse angle V shape, the head part 0a of the sliding rod 31 is provided with a rotatable first roller 311, the middle part of the sliding rod 31 is provided with a rotatable second roller 312, and the tail part 0b of the sliding rod 31 is hinged with the base 1; the turnover rod 32 is positioned between the middle part of the sliding rod 31 and the tail part 0b of the sliding rod 31; two ends of the driving component 33 are respectively hinged with the turning rod 32 and the base 1, and the horizontal direction of the thrust of the driving component 33 is the same as the horizontal direction from the first roller 311 to the second roller 312; the horizontal direction from the first roller 311 to the second roller 312 points to the turning device 3 where the first roller and the second roller are located to drive the rotation axis of the bed plate 2; the rotational axes of the first roller 311, the second roller 312, the slide bar 31, the head plate 21, the back plate 22, and the leg plate 24 are parallel to each other.

The sliding rod 31 is hinged with the base 1, and the sliding rod 31 adopts a bending structure, namely, the middle part of the sliding rod is an obtuse angle which is 120-170 degrees. When drive unit 33 promoted the upset of bed board 2, upset pole 32 drives slide bar 31 and uses slide bar 31 and base 1 pin joint to rotate as the pivot, second gyro wheel 312 rolls on the 2 bottom surfaces of bed board that correspond, promote corresponding bed board 2 and upwards overturn for base 1, overturn to 20 to 30 times for base 1 at the bed board 2 that is promoted, first gyro wheel 311 just contacts and rolls at its bottom surface with 2 bottom surfaces of bed board, only during a gyro wheel, very big resistance can appear when 20 to 30 of supporting component upset, add this resistance that can be overcome to another gyro wheel, guarantee the steady upset of bed board 2, and this drive arrangement's structure has reduced the thickness of intelligent bed, the intelligent bed is thinner.

In addition, each turnover device 3 is not connected to the top board 2, and if an object prevents the lifted top board 2 from falling, the contact state between the turnover device 3 and the top board 2 is changed to a non-contact state, thereby preventing a pinch.

Preferably, a reinforcing plate 313 is arranged at the corner between the sliding rod 31 and the turning rod 32. The strength of the connection between the slide bar 31 and the turnover bar 32 is enhanced, and the strength of the turnover device is improved. The sliding rod 31 and the reinforcing plate 313 are both in a sheet shape, so that the mass and the volume of components are reduced as much as possible on the basis of not influencing the function realization, and the mass and the volume of the intelligent bed are reduced.

Preferably, the turning rod 32 is fixedly provided with a U-shaped ear flap 321, and the driving part 33 is hinged with the turning rod 32 through the U-shaped ear flap 321, so that the turning rod is firm and durable, and is convenient to produce and assemble.

Preferably, fig. 10 is a schematic diagram of the moment arm of the turnover mechanism in the embodiment of the present invention, as shown in fig. 10, the lengths and positions of the gravity arm, the first resistance arm and the second resistance arm of the turnover device 3 in the horizontal direction in the flat-laid state are adjusted according to the following formula (1) and formula (2), so as to reduce the length of the power arm of each turnover device 3 in the vertical direction in the flat-laid state:

F1＝(G×L3)÷L1 (1)；

L2>(F1×L4)÷F (2)；

wherein L1 denotes a first resistance arm, L2 denotes a power arm, L3 denotes a gravity arm, L4 denotes a second resistance arm, G denotes a load of the deck 2, F denotes a thrust force, and F1 denotes a resistance force;

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

The resistance F1 is a force perpendicular to the base 120 from a contact point of the second roller 312 and the slide rail 9, the load G is a gravity perpendicular to a midpoint of the bed plate 2 contacted by the second roller 312, the gravity arm L3 is a linear distance from the midpoint of the bed plate 2 contacted by the second roller 312 to a rotation axis of the bed plate 2, the resistance arm L1 is a linear distance from the contact point of the second roller 312 and the bed plate 2 to the rotation axis of the bed plate 2, and the power arm L2 is a linear distance from a hinge point of the slide rod 31 and the base 1 to an extension line of the thrust F.

The length of the power arm L2 is in direct proportion to the thickness of the turnover device 3, namely the shorter the length of the power arm L2 is, the thinner the thickness of the turnover device 3 is, and the thickness of the intelligent bed is further influenced. For example, increasing the first resistance arm length, decreasing the gravity arm length to decrease the resistance, decreasing the second resistance arm length with decreasing resistance to further decrease the power arm length, and so on. When F <3000N, G >1285N, namely the intelligent bed bears the weight of a human body, the position of the force arm is simulated and changed through stress analysis, the stress change is calculated, the optimal force arm is found, the force arm structure of the intelligent bed is optimized, the thickness of the intelligent bed is reduced, the intelligent bed is thinned, the size of the intelligent bed is effectively controlled, and the transportation cost is reduced.

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

All the bed boards 2 can be provided with hollow holes 8, and the size and the arrangement mode of the hollow holes 8 can be set according to requirements. The hollowed-out hole 8 can reduce the weight of the intelligent bed, avoid scratching with the driving part 33, accommodate the hinged part of the driving part 33 and the turnover rod 32, and further reduce the thickness of the intelligent bed.

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

The linear push rod is low in cost, convenient to control the size of the intelligent bed, simple and practical.

Preferably, the linear pusher is push-only.

Only push type linear push rod only outputs push force, and output pulling force, that is to say the bed board 2 only relies on gravity to fall in the process of descending, and slide bar 31 and turnover rod 32 also rely on self gravity to descend, cooperate with the contact sliding cooperation of a gyro wheel and bed board 2, have avoided bed board 2 and turnover device 3 to cause the danger of clamp injury completely.

Further, fig. 11 is a partial enlarged view of the sliding rail in the embodiment of the present invention, as shown in fig. 11, further including: and the slide rails 9 are arranged in the back plate 22 and the leg plate 24, and the slide rails 9 are matched with the corresponding first rollers 311 and the second rollers 312.

The slide rail 9 can be arranged in the bed board 2, and the top of the slide rail 9 is closer to the top surface of the bed board 2, so that the whole thickness of the electric bed is thinner; the slide rail 9 can be made of wear-resistant materials such as metal, abrasion caused by long-term contact of the roller and the bed board 2 is avoided, and the durability of the product is improved.

Preferably, the sliding track 9 comprises: the top edges of two side walls of the U-shaped slide rail 91 extend in opposite directions to form a slide rail connecting part 92, the bed plate 2 is provided with a through hole, the slide rail 91 is positioned in the through hole, and the slide rail connecting part 92 is connected with the bottom surface of the bed plate 2.

The U-shaped slide rail 91 limits the roller in a specific direction, so that displacement is prevented, and the roller is prevented from being damaged; the slideway connecting part 92 is used for increasing the contact area between the slide rail 9 and the bed board 2, preventing the bed board 2 from being damaged by overlarge local pressure and prolonging the service life of the product.

Other embodiments of the invention will be apparent to those skilled in the art from 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 following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof.

Claims

1. A four-fold electric bed, comprising: the bed plate is flatly paved on the top of the base, and the turnover device is used for driving a part of the bed plate to turn over relative to the base; wherein the content of the first and second substances,

the base includes: the first frame, the second frame, the third frame and the fourth frame are sequentially connected in a rotatable or detachable mode at junctions;

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

the back plate, the hip plate, the leg plate and the foot plate are respectively arranged at the tops of the first frame, the second frame, the third frame and the fourth frame;

the tail part of the back plate is hinged with the tail part of the first frame, and the head part of the leg plate is hinged with the head part of the third frame.

2. The four-fold electric bed according to claim 1, wherein the bed deck further comprises: the head plate and the back plate are rotatably connected or detachably connected at the junction.

3. The four-fold electric bed according to claim 2, wherein the back plate further comprises: the limiting piece is used for limiting the head plate to rotate relative to the back plate.

4. The four-fold electric bed according to claim 3, wherein the stopper comprises: at least one baffle rotatably connected to the back plate;

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

when the head plate is not rotatable, the baffle is simultaneously positioned in the vertical projection of the back plate and the head plate.

5. The four-fold electric bed according to claim 3, wherein the stopper comprises: the bolt is arranged on the back plate and can move telescopically relative to the head plate;

when the head plate is rotatable, the bolt is positioned in the vertical projection of the back plate;

when the head plate is not rotatable, the latch is simultaneously within the vertical projection of the back plate and the head plate.

6. The four-fold electric bed according to claim 1 or 2, wherein the second frame and the third frame are rotatably connected by a biaxial rotation member, both ends of which are hinged to the second frame and the third frame, respectively.

7. The four-fold electric bed according to claim 6, wherein the two-axis rotating member includes: a load bearing portion and two extension portions;

the two extending parts extend towards opposite directions by taking the bearing part as a center, and the extending surfaces of the two extending parts are different;

the two extending parts are respectively hinged with the second frame and the third frame.

8. The four-fold electric bed according to claim 7, wherein the hip plate and/or the leg plate is provided with an opening matching the biaxial rotation piece.

9. The four-fold electric bed as claimed in claim 7, wherein the head portion of the first frame, the tail portion of the second frame and the bottom portion of the load bearing portion are provided with a plurality of bed foot attachment holes.

10. The four-fold electric bed according to claim 9, further comprising: the reinforcing piece of character cut in bas-relief, the both sides wall of reinforcing piece respectively with the second frame with the side laminating of third frame, the reinforcing piece with the bottom laminating of bearing part is equipped with the through-hole that the footpost connecting hole matches.

11. A four-fold electric bed as claimed in any one of claims 1 to 5 wherein said first frame is positionable within a space enclosed by said second frame and said third frame is positionable within a space enclosed by said fourth frame.

12. A four-fold electric bed according to any one of claims 1 to 5, wherein the first frame and the second frame are rotatably connected by a first single-axis rotating member, and the third frame and the fourth frame are rotatably connected by a second single-axis rotating member;

the both ends that first unipolar rotated the piece respectively with the second frame with third frame fixed connection, the both ends that second unipolar rotated the piece respectively with the third frame with fourth frame fixed connection.

13. The four-fold electric bed according to claim 12, wherein the first single-axis rotator and the second single-axis rotator each include: the connecting device comprises a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are hinged at an overlapping position.

14. The four-fold electric bed according to claim 13, further comprising: the first hoop and the second hoop are strengthened, the first hoop is strengthened, the second frame and the third frame are detachably connected, and the second hoop is strengthened, the third frame and the fourth frame are detachably connected.

15. The four-fold electric bed as recited in claim 14, wherein the first and second reinforcement hoops each comprise: the rotation portion of L shape and the portion of hugging closely of U-shaped, the rotation portion with portion fixed connection hugs closely, the rotation portion with the base rotates to be connected, the rotation portion with it blocks respectively on the base to hug closely the portion.

16. The four-fold electric bed as claimed in claim 15, wherein the rotating portion and the clasping portion are integrally formed.

17. The four-fold electric bed according to any one of claims 2 to 5, wherein the turnover device is disposed between the bed board and the base, and the turnover device is configured to drive the back board and/or the leg board to turn over relative to the base.

18. The four-fold electric bed according to claim 17, wherein the turning device comprises: the first turnover device is arranged between the back plate and the first frame, and the second turnover device is arranged between the leg plate, the foot plate, the third frame and the fourth frame;

wherein, first turning device and second tilting mechanism all include: two sliding rods, a turnover rod and a driving part;

the two sliding rods are respectively arranged at the two ends of the turnover rod and are in an H-like shape;

the middle part of the sliding rod protrudes towards the bed board to form an obtuse angle V shape, the head part 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 tail part of the sliding rod is hinged with the base;

the overturning rod is positioned between the middle part of the sliding rod and the tail part of the sliding rod;

two ends of the driving part are respectively hinged with the turnover rod and the base, and the horizontal direction of the thrust of the driving part 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 rotating axis of the turnover device where the first roller and the second roller are located to drive the bed plate;

the rotation axes of the first roller, the second roller, the sliding rod, the head plate, the back plate and the leg plate are parallel to each other.

19. The four-fold electric bed according to claim 17, wherein the lengths and positions of the gravity arm, the first resistance arm and the second resistance arm in the horizontal direction of the turning devices in the flat state are adjusted according to the following equations (1) and (2) to reduce the length of the power arm in the vertical direction of each turning device in the flat state:

F1＝(G×L3)÷L1 (1)；

L2>(F1×L4)÷F (2)；

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

20. The four-fold electric bed according to claim 18, wherein the back plate, the leg plate and the foot plate are each provided with a hollowed-out hole, the hollowed-out holes being located above the driving member.

21. The four-fold electric bed according to claim 18, wherein the driving member is a linear push rod.

22. The four-fold electric bed as claimed in claim 21, wherein the linear push rod is push-only.

23. The four-fold electric bed according to claim 18, further comprising: the sliding rails are arranged in the back plate and the leg plate and are matched with the corresponding first idler wheels and the corresponding second idler wheels.

24. The four-fold electric bed according to claim 23, wherein the slide rail comprises: the slide of U-shaped, the topside of the both sides wall of slide extends towards opposite direction and forms the slide connecting portion, the bed board is equipped with the through-hole, the slide is located in the through-hole, the slide connecting portion with the bottom surface of bed board is connected.