CN111956416A

CN111956416A - Help old bed that satisfies comfort level requirement and make things convenient for getting on or off bed

Info

Publication number: CN111956416A
Application number: CN202010798352.1A
Authority: CN
Inventors: 刘一祯; 杨明明; 陆轶诚; 胥强; 吴玉杰; 赵巢阳; 杨辉; 夏贤羽
Original assignee: Changzhou Institute of Technology
Current assignee: Changzhou Institute of Technology
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2020-11-20
Anticipated expiration: 2040-08-11
Also published as: CN111956416B

Abstract

The invention discloses an old-helping bed which meets the requirement of comfort level and is convenient for getting on and off a bed, comprising a bed board and a bed frame which can realize small-amplitude swing and large-amplitude inclination, wherein the left side and the right side of the bed board are respectively provided with a lifting handrail, and each lifting handrail is driven by a power output end of a connecting rod type linkage mechanism with a self-locking function to lift; waist-shaped holes arranged in the left-right direction on the power input ends of the two connecting rod type linkage mechanisms are respectively sleeved on two second push-pull rods rotatably arranged on the middle welding frame, so that the lifting handrail is linked with the second large-amplitude tilt driving mechanism through the cooperation of the waist-shaped holes and the second push-pull rods, and is independent of the second small-amplitude swing driving mechanism; the invention has powerful functions, can realize the functions of small-amplitude swinging of the bed board, large-amplitude inclination of the bed board and automatic lifting of the handrail, and drives the handrail to lift while the bed board is inclined left and right greatly, thereby better assisting the old to get on and off the bed.

Description

Help old bed that satisfies comfort level requirement and make things convenient for getting on or off bed

Technical Field

The invention relates to an old-age bed, in particular to an old-age bed which meets the requirement of comfort level and is convenient for getting on and off the bed.

Background

In a society with serious aging, many old people need to be cared by children or hospitals, and for the old people who are not convenient to move and live, the bed in which the old people are located becomes the place where the old people are located in most of the time in one day, so that the bed capable of assisting the old people to conveniently live becomes a demand for the old people. The special old-person assisting bed for the old is not designed in a targeted manner in many places, the beds for the paralyzed patients are more available in the market, and for most of the old, the old-person assisting bed is most important to ensure the comfort of the old and facilitate the activities of getting on and off the bed, so that the development of the old-person assisting bed meeting the requirement of comfort level and assisting the needs of getting on and off the bed is urgently needed.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention aims to overcome the defects and provides the old-people assisting bed which meets the requirement of comfort level and is convenient for getting on and off the bed.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the old-age assisting bed meeting the requirement of comfort level and facilitating getting on and off of the bed comprises a bed board and a bed frame, wherein the bed frame comprises a top welding frame, a middle welding frame and a base welding frame, and the bed board is fixedly arranged on the top welding frame; a first support shaft fixedly arranged in the middle of the top welding frame is installed in the middle of the upper surface of the middle welding frame through a bearing seat, a second support shaft fixed in the middle of the lower surface of the middle welding frame is installed in the middle of the base welding frame through a bearing seat, the first support shaft is arranged along the left-right direction, and the second support shaft is arranged along the front-back direction;

the middle welding frame is provided with a first small-amplitude swinging driving mechanism and a first large-amplitude tilting driving mechanism; the first large-amplitude inclination driving mechanism is connected with a first push-pull rod which is rotatably arranged on the top welding frame and is used for pushing and pulling the first push-pull rod through the first large-amplitude inclination driving mechanism to control the top welding frame to be inclined greatly around the axis of the first supporting shaft; the gear in the first small-amplitude swing driving mechanism is in clearance fit with the first supporting shaft, and the gear in the first small-amplitude swing driving mechanism is connected with the first supporting shaft through a first electromagnetic stopping assembly and used for controlling whether the first small-amplitude swing driving mechanism can drive the first supporting shaft to rotate or not through the first electromagnetic stopping assembly, so that whether the top welding frame swings around the axis of the first supporting shaft in a small amplitude or not and whether the first small-amplitude swing driving mechanism and the first large-amplitude tilt driving mechanism are switched or not is realized;

the base welding frame is provided with a second small-amplitude swinging driving mechanism and a second large-amplitude tilting driving mechanism; the second large-amplitude inclination driving mechanism is connected with a second push-pull rod which is rotatably arranged on the middle welding frame and is used for pushing and pulling the second push-pull rod through the second large-amplitude inclination driving mechanism to control the middle welding frame to be inclined greatly around the axis of the second support shaft; a gear in the second small-amplitude swing driving mechanism is in clearance fit with the second support shaft, and the gear in the second small-amplitude swing driving mechanism is connected with the second support shaft through a second electromagnetic stop assembly and used for controlling whether the second small-amplitude swing driving mechanism can drive the second support shaft to rotate or not through the second electromagnetic stop assembly, so that whether the middle welding frame swings around the axis of the second support shaft in a small amplitude or not and whether the second small-amplitude swing driving mechanism and the second large-amplitude tilt driving mechanism are switched or not is realized;

the left side and the right side of the bed board are provided with lifting handrails, and each lifting handrail is driven to lift by a power output end of a connecting rod type linkage mechanism with a self-locking function; waist-shaped holes arranged in the left-right direction on the power input ends of the two connecting rod type linkage mechanisms are respectively sleeved on the two second push-pull rods rotatably arranged on the middle welding frame, so that the lifting handrail is linked with the second large-amplitude tilt driving mechanism through the cooperation of the waist-shaped holes and the second push-pull rods, and the lifting handrail is independent of the second small-amplitude swing driving mechanism.

Furthermore, the connecting rod type linkage mechanism comprises an L-shaped vertical driving plate, a connecting rod mounting seat and an L-shaped connecting rod, wherein a first rotating shaft is fixedly arranged at the corner of the L-shaped connecting rod, and two ends of the first rotating shaft are rotatably supported on the two first ear plates on the connecting rod mounting seat; the free end of the outer side rod of the L-shaped connecting rod is hinged to the second connecting rod, and the hinged point of the outer side rod of the L-shaped connecting rod and the second connecting rod is always positioned outside the first rotating shaft; the outer side end of the second connecting rod is hinged with the lower end of the fourth connecting rod, and the upper end of the fourth connecting rod is connected with the lifting handrail and used for driving the lifting handrail to do lifting movement through the fourth connecting rod; the inner side end of the second connecting rod is hinged with the outer side end of the third connecting rod, the inner side end of the third connecting rod is fixedly arranged on a second rotating shaft, and the two ends of the second rotating shaft are rotatably supported on the connecting rod mounting seat and positioned on the two second lug plates on the inner side of the first lug plate; the free end of the inner side rod of the L-shaped connecting rod penetrates through the two second lug plates and then is hinged with the vertical plate of the L-shaped vertical driving plate, and the transverse plate of the L-shaped vertical driving plate is connected with the second push-pull rod through a waist-shaped hole.

Furthermore, the lifting handrail comprises a T-shaped handrail frame, at least two first longitudinal rods are fixedly arranged between two vertical rods in the T-shaped handrail frame, and each first longitudinal rod is matched with two Z-shaped connecting rods; the outer side ends of the two Z-shaped connecting rods can be rotatably sleeved on the first longitudinal rod, the inner side ends of the two Z-shaped connecting rods can be rotatably sleeved on the second longitudinal rod, and the front end and the rear end of the second longitudinal rod are connected with a vertical mounting plate fixedly arranged on the side surface of the bedstead through bearing seats; the corner of the two Z-shaped connecting rods positioned at the lowest part is fixedly provided with a third longitudinal rod which can rotatably penetrate through the upper end of a fourth connecting rod in the connecting rod type linkage mechanism.

Furthermore, the first large-amplitude tilt driving mechanism and the second large-amplitude tilt driving mechanism have the same structure, and both comprise a third push-pull rod, a first linear sliding module and a first motor for controlling the first linear sliding module to slide, the first linear sliding module comprises a spline lead screw, a spline nut and a first sliding plate, and the first sliding plate is fixedly provided with the spline nut and a first guide sleeve; the spline female sleeve is arranged on the spline screw rod, and the first guide sleeve is sleeved on the first guide rod; both ends of the spline screw rod and both ends of the first guide rod are respectively and rotatably supported on a first supporting beam and a second supporting beam in the middle welding frame or the base welding frame; one end of the spline screw rod is connected with an output shaft of a first motor through a first worm gear reducer arranged on a reducer mounting plate on the middle welding frame or the base welding frame; the third push-pull rod is arranged above the first sliding plate, and the third push-pull rod and the first sliding plate are arranged in parallel; two ends of the third push-pull rod are rotatably supported on the two first supporting blocks fixedly arranged on the first sliding plate; the third push-pull rod can be rotatably arranged at one end of the first connecting rod in a penetrating way, and the other end of the first connecting rod can be rotatably sleeved on the first push-pull rod or the second push-pull rod.

Furthermore, the first small-amplitude swing driving mechanism and the second small-amplitude swing driving mechanism are consistent in structure and respectively comprise a gear, a sector block, a mounting seat and an arc-shaped gear ring, wherein the mounting seat is fixedly arranged on the middle welding frame or the base welding frame, the arc-shaped gear ring can be meshed with the gear, a third rotating shaft is arranged at the circle center of the sector block, and two ends of the third rotating shaft are respectively and rotatably supported on two third lug plates of the mounting seat; the fan-shaped block is driven by an eccentric mechanism to swing; the circumference of the fan-shaped block is provided with an arc-shaped track and flanges positioned at two ends of the fan-shaped track; the arc-shaped gear ring is arranged on the fan-shaped block in a mode that an arc-shaped groove on the inner circumferential surface of the arc-shaped gear ring is in sliding connection with the arc-shaped track.

Furthermore, the eccentric mechanism comprises a second motor and an eccentric wheel, the second motor is fixedly arranged on the bottom plate of the mounting seat, and a horizontal output shaft of the second motor is fixedly arranged at the circle center of the eccentric wheel; the wheel surface of the eccentric wheel is hinged with the outer side end of the fifth connecting rod, and the inner side end of the fifth connecting rod is hinged to the sector of the sector block.

Furthermore, the first support shaft and the second support shaft have the same structure and respectively comprise a middle shaft shell for mounting the first electromagnetic locking component or the second electromagnetic locking component and connecting shaft sections fixedly arranged on two sides of the middle shaft shell, the openings at two ends of the middle shaft shell are respectively in threaded connection with end covers, and the end covers are connected with the connecting shaft sections in a clamping manner through regular polygonal convex blocks and regular polygonal grooves; the connecting shaft section is connected with a connecting plate fixedly arranged on the top welding frame or the middle welding frame in a mode of inserting the regular polygon connecting block into a regular polygon hole formed in the connecting plate.

Furthermore, the first electromagnetic locking component and the second electromagnetic locking component have the same structure, and both comprise a plurality of operation sliding blocks which are uniformly distributed along the circumferential direction of the intermediate shaft shell and are telescopically arranged on the intermediate shaft shell and an electromagnetic telescopic driving mechanism which is used for controlling the operation sliding blocks to simultaneously extend out to be clamped and fixed with clamping grooves on the gear or simultaneously retract to release the gear, the electromagnetic telescopic driving mechanism comprises a hollow sliding shaft which is slidably arranged in the intermediate shaft shell and electromagnetic valves which are arranged on two sides of the hollow sliding shaft and are fixedly arranged on the intermediate shaft shell, the hollow sliding shaft is slidably sleeved on the fixed shaft, and the hollow sliding shaft is controlled by the two electromagnetic valves to reciprocate on the fixed shaft; a plurality of running chutes are uniformly distributed on the hollow sliding shaft along the circumferential direction of the hollow sliding shaft, and the bottom wall of each running chute is a driving inclined plane for driving the running slide block to do telescopic motion; the lower end of the running slide block is arranged on the driving inclined plane, the lower surface of the running slide block is a sliding inclined plane matched with the driving inclined plane, and a guide slide block on the sliding inclined plane is in sliding connection with a guide sliding groove arranged on the driving inclined plane; the lower end of the operating slide block is fixedly connected with one end of a spring, and the other end of the spring penetrates through the guide chute and is fixedly connected with a spring seat fixedly arranged on the fixed shaft; the upper end of the operating slide block is connected with an outlet arranged on the middle shaft shell in a sliding way.

Furthermore, the bed plate consists of a front bed plate, a middle bed plate and a rear bed plate, and the rear end of the front bed plate is hinged with the middle bed plate and the front ends of the middle bed plate and the rear bed plate; the middle bed plate is fixedly arranged on the welding frame at the top; the front bed board and the rear bed board are driven by a leg bending and back lifting linkage mechanism to rotate together; the leg bending and back lifting linkage mechanism comprises a second linear sliding module arranged on the top welding frame, and a second sliding plate in the second linear sliding module is driven by a third motor to slide back and forth; a fourth push-pull rod parallel to the second sliding plate is arranged above the second sliding plate, and two ends of the fourth push-pull rod are rotatably supported on two second supporting blocks fixedly arranged on the second sliding plate; the fourth push-pull rod is rotatably arranged at one end of the sixth connecting rod in a penetrating way, and the other end of the sixth connecting rod is rotatably sleeved at the middle part of the seventh connecting rod; the front end of the seventh connecting rod is hinged with one end of the eighth connecting rod, and the other end of the eighth connecting rod is vertically and fixedly arranged on the back of the front bed plate; the rear end of the seventh connecting rod is hinged with one end of a ninth connecting rod, and the other end of the ninth connecting rod is vertically and fixedly arranged on the back of the rear bed board.

Furthermore, the second linear sliding module comprises a screw rod, a ball nut and a second sliding plate; the second sliding plate is fixedly provided with a second guide sleeve and a ball nut, the ball nut is sleeved on the screw rod, and the second guide sleeve is sleeved on the second guide rod; both ends of the screw rod and both ends of the second guide rod are respectively and rotatably supported on the first support beam and the second support beam in the top welding frame; one end of the screw rod is connected with an output shaft of the third motor through a second worm gear reducer which is fixedly arranged on a reducer mounting plate in the top welding frame.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) according to the old-people assisting bed meeting the requirement of comfort level and facilitating getting on and off the bed, the small-amplitude swinging state and the large-amplitude inclining state can be switched through the electromagnetic stopping assembly according to the requirement, the bed board is driven to swing in the front-back direction in a small amplitude through the first small-amplitude swinging driving mechanism, the bed board is driven to swing in the left-right direction in a small amplitude through the second small-amplitude swinging driving mechanism, the effects of relaxing muscles, enhancing blood circulation and relieving fatigue can be achieved, and better enjoyment can be brought to old people due to small swinging amplitude; the bed plate is driven to be greatly inclined left and right by the second large-amplitude inclination driving mechanism, so that the old can be assisted to get on or off the bed, and the problem of difficult transfer between a wheelchair and the bed is solved; the bed board is driven to be greatly inclined back and forth by the first large-amplitude inclination driving mechanism, so that the requirement of the old on the comfort level of lying on the bed can be met;

(2) according to the old-helping bed meeting the requirement on comfort level and facilitating getting on and off the bed, when small-amplitude swinging is needed, the electromagnetic stop component is controlled to enable the gear and the supporting shaft to rotate together, so that the small-amplitude swinging driving mechanism actively works to drive the bed plate to swing around the axis of the supporting shaft in a small amplitude, meanwhile, the large-amplitude tilting driving mechanism passively works under the action of rotation of the supporting shaft, and at the moment, the large-amplitude tilting driving mechanism assists the small-amplitude swinging driving mechanism to work, so that the small-amplitude swinging of the bed plate is more stable; when the large-amplitude inclined bed plate needs to be greatly inclined, the electromagnetic stop assembly is controlled to enable the gear and the supporting shaft to relatively rotate, so that the small-amplitude swing driving mechanism and the large-amplitude inclined driving mechanism are mutually independent, and the large-amplitude inclined driving mechanism actively works to drive the bed plate to be greatly inclined around the axis of the supporting shaft;

(3) the invention relates to an old-people assisting bed which meets the requirement of comfort level and is convenient for getting on and off the bed, in order to make the old people get on and off the bed more conveniently, the left side and the right side of a bed frame are both provided with lifting handrails, the lifting handrail is driven by the power output end of the connecting rod type linkage mechanism with the self-locking function to lift, the waist-shaped hole arranged in the left-right direction on the power input end of the connecting rod type linkage mechanism is sleeved on a second push-pull rod which is rotatably arranged on the middle welding frame, when the second small-amplitude swinging driving mechanism works to drive the middle welding frame to swing in a small amplitude, the second push-pull rod slides in the waist-shaped hole and drives the L-shaped vertical driving plate to rotate, but, because the oscillation is of a small amplitude, the second push-pull rod cannot press or bear against the L-shaped vertical driving plate, the connecting rod type linkage mechanism can not be driven to work, and the lifting handrail and the second small-amplitude swing driving mechanism are independent; when the second large-amplitude inclination driving mechanism works to drive the middle welding frame to incline greatly, the second push-pull rod can finally press or prop the L-shaped vertical driving plate after sliding in the waist-shaped hole due to the large inclination amplitude, and then the L-shaped vertical driving plate drives the connecting rod type linkage mechanism to work, so that the second large-amplitude inclination driving mechanism is linked with the lifting handrail; when an old man needs to get on the bed, the bed board is driven to incline greatly by the second large-amplitude inclination driving mechanism, the lifting handrail is driven to descend, the old man can sit on the bed edge conveniently, feet step on the lifting handrail, then the second large-amplitude inclination driving mechanism drives the bed board to swing and reset and simultaneously drives the lifting handrail to ascend and reset, the bed board swing and reset and the lifting handrail ascending and reset are utilized to assist the old man to finish getting on the bed, when the old man needs to get off the bed, the second large-amplitude inclination driving mechanism is controlled to finish the large-amplitude inclination of the bed board and the descending of the lifting handrail simultaneously, and the inclination of the bed board is;

(4) according to the old-people assisting bed which meets the requirement of comfort level and is convenient for getting on and off the bed, the connecting rod type linkage mechanism is simple in structure and convenient to connect, the middle welding frame drives the second push-pull rod to swing, the second push-pull rod drives the L-shaped vertical driving plate to rotate, and the connecting rod type linkage mechanism does not work in the process that the second push-pull rod can slide in the kidney-shaped hole along the kidney-shaped hole; when the second push-pull rod presses or props against the waist-shaped hole, the L-shaped connecting rod is driven to rotate through the L-shaped vertical driving plate, so that a quadrilateral connecting rod structure formed by the second connecting rod, the L-shaped connecting rod, the third connecting rod and the connecting rod mounting seat is deformed, the downward pressing action or the upward jacking action is expanded to the lifting handrail through the quadrilateral connecting rod structure, and the purpose that the lifting handrail is controlled to lift through the swinging movement of the middle welding frame is achieved; the quadrilateral connecting rod structure has a self-locking function, so that the lifting handrail cannot drive the quadrilateral connecting rod structure to deform, and the working state of the lifting handrail can be kept;

(5) the old-helping bed meeting the requirement of comfort level and facilitating getting on and off the bed has the advantages that the large-amplitude inclination driving mechanism is simple in structure, convenient to connect and ingenious in design, when the large-amplitude inclination state is implemented, the first motor works and drives the spline lead screw to rotate through the worm gear reducer, the rotation of the spline lead screw can drive the sliding plate to slide, the sliding plate slides to push and pull the push-pull rod through the first connecting rod, and the purpose of pushing and pulling the top welding frame or the middle welding frame is further achieved; when the small-amplitude swinging state is implemented, the first motor does not work, one end of the spline screw rod passes through the worm and gear reducer and an output shaft of the first motor, and the worm and gear reducer has a self-locking function, so that the spline screw rod cannot rotate;

(6) the small-amplitude swinging driving mechanism of the old-helping bed which meets the requirement of comfort level and is convenient for getting on and off the bed has simple structure and ingenious design, can realize small-amplitude swinging-stopping-small-amplitude swinging in the opposite direction when working, can drive the body of the old lying on the bed plate to swing, can achieve the effects of relaxing muscles, enhancing blood circulation and relieving fatigue, and brings better enjoyment to the old; the eccentric mechanism can drive the sector block to swing, because the circumferential surface of the sector block is provided with the arc-shaped track and the flanges positioned at two ends of the sector-shaped track, and the arc-shaped gear ring is arranged on the sector block in a manner of sliding connection with the arc-shaped track through the arc-shaped groove on the inner circumferential surface of the arc-shaped gear ring, the sector block swings and the arc-shaped gear ring slides on the arc-shaped track, at the moment, the arc-shaped gear ring and the gear do not have relative meshing motion, the arc-shaped gear ring can not drive the gear to rotate and is in; the arc-shaped gear ring is meshed with the gear when the sector swings and the arc-shaped gear ring impacts the flange, the arc-shaped gear ring drives the gear to rotate, and the gear drives the supporting shaft to rotate together and is in a swinging state;

(7) according to the old-helping bed meeting the requirement on comfort level and facilitating getting on and off of the bed, the end covers are in threaded connection with the openings at the two ends of the middle shaft shell, the end covers are connected with the connecting shaft sections in a clamping mode through the regular polygon convex blocks and the regular polygon grooves, the supporting shaft is assembled quickly, the end part of the free end of each connecting shaft section is provided with the regular polygon connecting block, the connecting shaft sections are connected with the connecting plates fixedly arranged on the top welding frame or the middle welding frame in a mode that the regular polygon connecting blocks are inserted into the regular polygon holes formed in the connecting plates, and the supporting shaft is connected with the top welding frame or the middle welding frame conveniently;

(8) the invention provides an old-helping bed which meets the requirement of comfort level and is convenient for getting on and off the bed, an electromagnetic locking assembly of the old-helping bed is simple in structure and convenient for connection, switching of large-amplitude tilting motion and small-amplitude swinging motion can be realized by controlling the electromagnetic locking assembly, a plurality of running sliding blocks can be controlled to simultaneously extend out or retract simultaneously by an electromagnetic telescopic driving mechanism, further, the control gear and a supporting shaft rotate together or the gear and the supporting shaft rotate relatively, when one of two electromagnetic valves is electrified, a hollow sliding shaft is adsorbed to the electrified electromagnetic valve to move, and the two electromagnetic valves are alternatively electrified to realize the control of the hollow sliding shaft to do reciprocating motion; when the operation sliding blocks ascend along the driving inclined plane, the operation sliding blocks simultaneously extend out under the action of the driving inclined plane, the gear and the supporting shaft are connected together in a mode that the operation sliding blocks are clamped with clamping grooves in the gear, and when the operation sliding blocks descend along the driving inclined plane, the operation sliding blocks retract simultaneously under the action of the springs, so that the gear and the supporting shaft are restored to a clearance fit state;

(9) the invention relates to an old-person assisting bed which meets the requirement of comfort level and is convenient for getting on and off a bed, wherein a bed plate of the old-person assisting bed comprises a front bed plate, a middle bed plate and a rear bed plate, the rear end of the front bed plate is hinged with the middle bed plate, the middle bed plate is fixedly arranged on a top welding frame, the front bed plate and the rear bed plate are driven by a leg bending and back lifting linkage mechanism to rotate together, the structure is simple, the connection is convenient, and the old-person can drive the front bed plate and the rear bed plate to work together by controlling the leg bending and back lifting linkage mechanism to work when wanting to sit up, so that the linkage of leg bending and back lifting is realized;

(10) according to the old-people assisting bed which meets the requirement of comfort level and is convenient for getting on and off the bed, the leg bending and back lifting linkage mechanism is simple in structure and convenient to connect, the second linear sliding module works to enable the second sliding plate to slide, the second sliding plate slides to drive the sixth connecting rod to swing through the fourth push-pull rod, one end of the sixth connecting rod enables pushing action to be expanded to the rear bed plate through the ninth connecting rod, back lifting is achieved, the other end of the sixth connecting rod enables pulling action to be expanded to the front bed plate through the eight connecting rods, and leg bending is achieved;

(11) according to the old-helping bed meeting the requirement on comfort level and facilitating getting on and off of the bed, the second linear sliding module is simple in structure and convenient to connect, the third motor works to drive the screw rod to rotate through the second worm gear reducer, the screw rod rotates to drive the ball nut and the second guide sleeve to slide, and further the second sliding plate is driven to slide, and the ball nut cannot drive the screw rod to rotate due to the fact that the second worm gear reducer drives the self-locking function, so that the bed board can be guaranteed to be in a leg bending and back lifting state.

Drawings

FIG. 1 is a schematic structural view of an old-people assisting bed which meets the requirement of comfort and is convenient for getting on and off the bed according to the invention;

FIG. 2 is a schematic structural view of the old-people assisting bed of the present invention after bending legs and lifting back to meet the requirement of comfort and facilitating getting on and off the bed;

FIG. 3 is a partial view of the lifting armrest of the senior citizen's bed of the present invention which meets the comfort requirement and facilitates getting on and off the bed;

FIG. 4 is a schematic structural diagram of a linkage mechanism of a senior citizen bed of the present invention, which meets the requirement of comfort and facilitates getting on and off the bed;

FIG. 5 is a schematic view of the connection between the leg-bending and back-lifting linkage mechanism and the bed plate in the old-people-assisting bed of the present invention, which meets the requirement of comfort and facilitates getting on and off the bed;

FIG. 6 is a schematic structural view of a top welding frame on which a second linear sliding mold is mounted in an old-fashioned bed for convenience of getting on and off the bed according to the present invention;

FIG. 7 is a schematic structural diagram of a frame of an old-fashioned bed according to the present invention, which meets the requirement of comfort and facilitates getting on and off the bed;

FIG. 8 is a schematic view of a connection structure of a small-amplitude swing driving mechanism, a large-amplitude tilt driving mechanism and an electromagnetic locking assembly in the elderly-assisting bed, which meets the requirement of comfort and facilitates getting on and off the bed;

FIG. 9 is a schematic structural diagram of a small-amplitude swing driving mechanism in an old-age bed according to the present invention, which satisfies the requirement of comfort and facilitates getting on and off the bed;

FIG. 10 is a schematic structural view of a large-amplitude tilt driving mechanism in an old-fashioned bed which meets the requirement of comfort and is convenient for getting on and off the bed according to the present invention;

FIG. 11 is a schematic structural view of a support shaft of an old-fashioned bed according to the present invention, which meets the requirement of comfort and facilitates getting on and off the bed;

FIG. 12 is a cross-sectional view of an electromagnetic stop assembly in an assisted-aging bed of the present invention that meets comfort requirements and facilitates getting on and off the bed;

fig. 13 is a schematic structural view of a hollow sliding shaft in an old-people bed which meets the requirement of comfort and is convenient for getting on and off the bed.

The reference numerals in the schematic drawings illustrate: 1-1, welding a frame at the top; 1-2, welding a frame in the middle; 1-3, welding a frame on a base; 2. a first support shaft; 3. a second support shaft; a-1, a middle shaft shell; a-2, connecting the shaft section; a-3, connecting a regular polygon block; a-4, end cover; a-4-1, a regular polygonal bump; 4. a first push-pull rod; 5. a second push-pull rod; 6-1, spline screw rod; 6-2, a spline nut; 6-3, a first sliding plate; 6-4, a first guide sleeve; 6-5, a first guide rod; 6-6, a first worm gear reducer; 6-7, a first motor; 6-8, a third push-pull rod; 6-9, supporting blocks; 6-10 parts of a first connecting rod; 7-1, mounting seats; 7-2, fan-shaped blocks; 7-2-1, arc track; 7-2-2, and a flange; 7-3, a third rotating shaft; 7-4, arc-shaped gear rings; 7-5, a second motor; 7-6, an eccentric wheel; 7-7, a fifth connecting rod; 7-8, gears; 7-8-1 of a clamping groove; 8-1, a front bed plate; 8-2, a middle bed plate; 8-3, a rear bed board; 9-1, an electromagnetic valve; 9-2, operating a sliding block; 9-2-1, a guide slide block; 9-2-2, sliding slope; 9-3, a hollow sliding shaft; 9-3-1, running a chute; 9-3-2, driving the inclined plane; 9-3-3, a guide chute; 9-4, fixing the shaft; 9-5, a spring; 9-6, a spring seat; 10. a connecting plate; 11-1, an L-shaped vertical drive plate; 11-1-1, a waist-shaped hole; 11-2, a connecting rod mounting seat; 11-3, an L-shaped connecting rod; 11-4, a second connecting rod; 11-5, a third connecting rod; 11-6, a fourth connecting rod; 11-7, a first rotating shaft; 11-8, a second rotating shaft; 12-1, a T-shaped armrest frame; 12-1-1, a vertical rod; 12-2, a first longitudinal bar; 12-3, a Z-shaped connecting rod; 12-4, a second longitudinal bar; 12-5, a vertical mounting plate; 12-6, a third longitudinal bar; 13-1, a second sliding plate; 13-2, a third motor; 13-3, a screw rod; 13-4, ball nut; 13-5, a second guide sleeve; 13-6, a second guide rod; 13-7, a second worm gear reducer; 14-1, a fourth push-pull rod; 14-2, a sixth connecting rod; 14-3, a seventh connecting rod; 14-4, an eighth connecting rod; 14-5 and a ninth connecting rod.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Examples

With reference to fig. 1 and 2, the old-people assisting bed which meets the requirement of comfort and is convenient for getting on and off the bed in the embodiment comprises a bed board and a bed frame, wherein the bed board is fixedly arranged on a top welding frame 1-1; the bed board is composed of a front bed board 8-1, a middle bed board 8-2 and a rear bed board 8-3, the rear end of the front bed board 8-1 is hinged with the middle bed board 8-2, and the middle bed board 8-2 is hinged with the front end of the rear bed board 8-3; the middle bed plate 8-2 is fixedly arranged on the top welding frame 1-1; the front bed plate 8-1 and the rear bed plate 8-3 are driven by a leg bending and back lifting linkage mechanism to rotate together; the structure is simple, the connection is convenient, and the old people can drive the front bed board and the rear bed board to work together by controlling the leg bending and back lifting linkage mechanism to work when the old people want to sit up, so that the leg bending and back lifting linkage is realized;

continuing and combining the drawing 5, the leg bending and back lifting linkage mechanism comprises a second linear sliding module arranged on the top welding frame 1-1, and a second sliding plate 13-1 in the second linear sliding module is driven by a third motor 13-2 to slide back and forth; a fourth push-pull rod 14-1 parallel to the second sliding plate 13-1 is arranged above the second sliding plate 13-1, and two ends of the fourth push-pull rod 14-1 are rotatably supported on two second supporting blocks fixedly arranged on the second sliding plate 13-1; the fourth push-pull rod 14-1 is rotatably arranged at one end of the sixth connecting rod 14-2 in a penetrating way, and the other end of the sixth connecting rod 14-2 is rotatably sleeved at the middle part of the seventh connecting rod 14-3; the front end of the seventh connecting rod 14-3 is hinged with one end of the eighth connecting rod 14-4, and the other end of the eighth connecting rod 14-4 is vertically and fixedly arranged on the back of the front bed plate 8-1; the rear end of the seventh connecting rod 14-3 is hinged with one end of a ninth connecting rod 14-5, and the other end of the ninth connecting rod 14-5 is vertically and fixedly arranged on the back of the rear bed plate 8-3; the leg bending and back lifting linkage mechanism is simple in structure and convenient to connect, the second linear sliding module works to enable the second sliding plate to slide, the second sliding plate slides to drive the sixth connecting rod to swing through the fourth push-pull rod, so that one end of the sixth connecting rod expands pushing action onto the rear bed plate through the ninth connecting rod to realize back lifting, and the other end of the sixth connecting rod expands pulling action onto the front bed plate through the eight connecting rods to realize leg bending;

continuing and referring to FIG. 6, the second linear sliding module comprises a screw 13-3, a ball nut 13-4 and a second sliding plate 13-1; a second guide sleeve 13-5 and a ball nut 13-4 are fixedly arranged on the second sliding plate 13-1, the ball nut 13-4 is sleeved on the screw rod 13-3, and the second guide sleeve 13-5 is sleeved on the second guide rod 13-6; both ends of the screw rod 13-3 and both ends of the second guide rod 13-6 are respectively and rotatably supported on a first supporting beam and a second supporting beam in the top welding frame 1-1; one end of the screw 13-3 is connected with an output shaft of a third motor 13-2 through a second worm gear reducer 13-7, the second worm gear reducer 13-7 is fixedly arranged on a reducer mounting plate in the top welding frame 1-1, the second linear sliding module is simple in structure and convenient to connect, the third motor drives the screw to rotate through the second worm gear reducer, the screw rotates to drive the ball nut and the second guide sleeve to slide, and further drives the second sliding plate to slide, and the ball nut cannot drive the screw to rotate due to the self-locking function of the second worm gear reducer, so that the bed board can be ensured to be in a leg bending and back lifting state;

continuing and combining with the figures 7 and 11, the bed frame comprises a top welding frame 1-1, a middle welding frame 1-2 and a base welding frame 1-3, and universal wheels are arranged at four corners of the base welding frame 1-3; a first support shaft 2 fixedly arranged in the middle of the top welding frame 1-1 is arranged in the middle of the upper surface of the middle welding frame 1-2 through a bearing seat, a second support shaft 3 fixed in the middle of the lower surface of the middle welding frame 1-2 is arranged in the middle of the base welding frame 1-3 through a bearing seat, wherein the first support shaft 2 is arranged along the left-right direction, and the second support shaft 3 is arranged along the front-back direction; in the embodiment, the first support shaft 2 and the second support shaft 3 are consistent in structure and respectively comprise a middle shaft shell A-1 for mounting a first electromagnetic locking component or a second electromagnetic locking component and a connecting shaft section A-2 fixedly arranged on two sides of the middle shaft shell A-1, end covers A-4 are respectively in threaded connection with openings at two ends of the middle shaft shell A-1, the end covers A-4 are connected with the connecting shaft section A-2 in a clamping mode through regular polygonal lugs A-4-1 and regular polygonal grooves, and the support shafts are assembled quickly; the end part of the free end of the connecting shaft section A-2 is provided with a regular polygon connecting block A-3, the connecting shaft section A-2 is connected with a connecting plate 10 fixedly arranged on the top welding frame 1-1 or the middle welding frame 1-2 in a mode that the regular polygon connecting block A-3 is inserted into a regular polygon hole formed in the connecting plate 10, and the supporting shaft is conveniently connected with the top welding frame or the middle welding frame; in the embodiment, the structural shapes of the regular polygon groove, the regular polygon hole, the regular polygon connecting block A-3 and the regular polygon groove are all regular quadrangles;

continuing with fig. 7 and 8, in order to realize that the top welding frame 1-1 can be switched between the small-amplitude front-back direction swing state and the large-amplitude front-back direction inclination state as required, the middle welding frame 1-2 is provided with a first small-amplitude swing driving mechanism and a first large-amplitude inclination driving mechanism; the first large-amplitude inclination driving mechanism is connected with a first push-pull rod 4 which is rotatably arranged on the top welding frame 1-1 and is used for controlling the top welding frame 1-1 to incline around the axis of the first support shaft 2 by pushing and pulling the first push-pull rod 4 through the first large-amplitude inclination driving mechanism; a gear 7-8 in the first small-amplitude swing driving mechanism is in clearance fit with the first support shaft 2, and the gear 7-8 in the first small-amplitude swing driving mechanism is connected with the first support shaft 2 through a first electromagnetic stopping component and used for controlling whether the first small-amplitude swing driving mechanism can drive the first support shaft 2 to rotate or not through the first electromagnetic stopping component, so that whether the top welding frame 1-1 swings around the axis of the first support shaft 2 in a small amplitude or not and whether the first small-amplitude swing driving mechanism and the first large-amplitude tilt driving mechanism are switched or not is realized;

continuing with fig. 7 and 8, in order to realize that the middle welding frame 1-2 can be switched between the small-amplitude left-right direction swing state and the large-amplitude left-right direction inclination state as required, the base welding frame 1-3 is provided with a second small-amplitude swing driving mechanism and a second large-amplitude inclination driving mechanism; the second large-amplitude inclination driving mechanism is connected with a second push-pull rod 5 which is rotatably arranged on the middle welding frame 1-2 and is used for controlling the middle welding frame 1-2 to be inclined greatly around the axis of the second support shaft 3 by pushing and pulling the second push-pull rod 5 through the second large-amplitude inclination driving mechanism; a gear 7-8 in the second small-amplitude swing driving mechanism is in clearance fit with the second support shaft 3, and the gear 7-8 in the second small-amplitude swing driving mechanism is connected with the second support shaft 3 through a second electromagnetic stop component and used for controlling whether the second small-amplitude swing driving mechanism can drive the second support shaft 3 to rotate or not through the second electromagnetic stop component, so that whether the middle welding frame swings around the axis of the second support shaft 3 in a small amplitude or not and whether the second small-amplitude swing driving mechanism and the second large-amplitude tilt driving mechanism are switched or not are realized;

the first small-amplitude swing driving mechanism drives the bed board to swing back and forth in a small-amplitude manner, and the second small-amplitude swing driving mechanism drives the bed board to swing left and right in a small-amplitude manner, so that the effects of relaxing muscles, enhancing blood circulation and relieving fatigue can be achieved, and better enjoyment can be brought to the old due to small swing amplitude; the bed plate is driven to be greatly inclined left and right by the second large-amplitude inclination driving mechanism, so that the old can be assisted to get on or off the bed, and the problem of difficult transfer between a wheelchair and the bed is solved; the bed board is driven to be greatly inclined back and forth by the first large-amplitude inclination driving mechanism, so that the requirement of the old on the comfort level of lying on the bed can be met;

the specific switching process of small-amplitude swing and large-amplitude tilt is as follows: when small-amplitude swinging is needed, the electromagnetic stop assembly is controlled to enable the gear and the supporting shaft to rotate together, so that the small-amplitude swinging driving mechanism actively works to drive the bed plate to swing around the axis of the supporting shaft in a small amplitude, and meanwhile, the large-amplitude tilting driving mechanism passively works under the action of rotation of the bed plate, and at the moment, the large-amplitude tilting driving mechanism assists the small-amplitude swinging driving mechanism to work, so that the small-amplitude swinging of the bed plate is more stable; when the large-amplitude inclination is needed, the electromagnetic stop component is controlled to enable the gear and the supporting shaft to rotate relatively, namely, the gear and the supporting shaft are in a clearance fit state, so that the small-amplitude swing driving mechanism and the large-amplitude inclination driving mechanism are mutually independent, and the large-amplitude inclination driving mechanism actively works to drive the bed plate to incline greatly around the axis of the supporting shaft;

continuing with fig. 3 and 4, the left and right sides of the bed board are provided with lifting handrails, and in order to make getting on and off the bed of the old more convenient, each lifting handrail is driven to lift by a power output end of a connecting rod type linkage mechanism with a self-locking function; waist-shaped holes 11-1-1 arranged in the left-right direction on the power input ends of the two connecting rod type linkage mechanisms are respectively sleeved on two second push-pull rods 5 rotatably arranged on the middle welding frame 1-2, so that the lifting handrail is linked with a second large-amplitude tilt driving mechanism through the cooperation of the waist-shaped holes 11-1-1 and the second push-pull rods 5 and is independent from the second small-amplitude swing driving mechanism;

when the second small-amplitude swing driving mechanism works to drive the middle welding frame to swing in a small amplitude, the second push-pull rod slides in the waist-shaped hole and drives the L-shaped vertical driving plate to rotate, but the second push-pull rod cannot press or prop against the L-shaped vertical driving plate due to the small-amplitude swing, so that the connecting rod type linkage mechanism cannot be driven to work, and the lifting handrail and the second small-amplitude swing driving mechanism are independent; when the second large-amplitude inclination driving mechanism works to drive the middle welding frame to incline greatly, the second push-pull rod can finally press or prop the L-shaped vertical driving plate after sliding in the waist-shaped hole due to the large inclination amplitude, and then the L-shaped vertical driving plate drives the connecting rod type linkage mechanism to work, so that the second large-amplitude inclination driving mechanism is linked with the lifting handrail; when the old man needs to get to the bed, the bed board is driven to incline greatly through the second large-amplitude inclination driving mechanism, and the old man can descend through driving the lifting handrail, so that the old man can sit on the bed edge conveniently, and the feet of the old man step on the lifting handrail, then the second large-amplitude inclination driving mechanism drives the bed board to swing and reset, and simultaneously drives the lifting handrail to ascend and reset, and the old man can complete getting to the bed by assisting the old man by swinging and resetting the lifting handrail, and the old man only needs to control the second large-amplitude inclination driving mechanism to simultaneously complete the large-amplitude inclination of the bed board and descending of the lifting handrail when getting to the bed.

Continuing to fig. 4, the link type linkage mechanism in this embodiment includes an L-shaped vertical driving plate 11-1, a link mounting seat 11-2 and an L-shaped connecting rod 11-3, a first rotating shaft 11-7 is fixedly disposed at a corner of the L-shaped connecting rod 11-3, and two ends of the first rotating shaft 11-7 are rotatably supported on two first ear plates on the link mounting seat 11-2; the free end of the outer side rod of the L-shaped connecting rod 11-3 is hinged to the second connecting rod 11-4, wherein the hinged point of the outer side rod of the L-shaped connecting rod 11-3 and the second connecting rod 11-4 is always positioned outside the first rotating shaft 11-7; the outer side end of the second connecting rod 11-4 is hinged with the lower end of the fourth connecting rod 11-6, and the upper end of the fourth connecting rod 11-6 is connected with the lifting handrail so as to drive the lifting handrail to do lifting movement through the fourth connecting rod 11-6; the inner side end of the second connecting rod 11-4 is hinged with the outer side end of the third connecting rod 11-5, the inner side end of the third connecting rod 11-5 is fixedly arranged on a second rotating shaft 11-8, and the two ends of the second rotating shaft 11-8 are rotatably supported on the connecting rod mounting seat 11-2 and are positioned on the two second lug plates on the inner side of the first lug plate; the free end of an inner side rod of the L-shaped connecting rod 11-3 penetrates through the two second lug plates and then is hinged with a vertical plate of the L-shaped vertical driving plate 11-1, and a transverse plate of the L-shaped vertical driving plate 11-1 is connected with the second push-pull rod 5 through a waist-shaped hole 11-1-1;

the connecting rod type linkage mechanism is simple in structure and convenient to connect, the middle welding frame drives the second push-pull rod to swing, the second push-pull rod drives the L-shaped vertical driving plate to rotate, and the connecting rod type linkage mechanism does not work in the process that the second push-pull rod can slide in the kidney-shaped hole along the kidney-shaped hole; when the second push-pull rod presses or props against the waist-shaped hole, the L-shaped connecting rod is driven to rotate through the L-shaped vertical driving plate, so that a quadrilateral connecting rod structure formed by the second connecting rod, the L-shaped connecting rod, the third connecting rod and the connecting rod mounting seat is deformed, the downward pressing action or the upward jacking action is expanded to the lifting handrail through the quadrilateral connecting rod structure, and the purpose that the lifting handrail is controlled to lift through the swinging movement of the middle welding frame is achieved; the quadrilateral connecting rod structure has a self-locking function, so that the lifting handrail cannot drive the quadrilateral connecting rod structure to deform, and the working state of the lifting handrail can be kept;

continuing and combining with the figure 3, the lifting handrail comprises a T-shaped handrail frame 12-1, at least two first longitudinal rods 12-2 are fixedly arranged between two vertical rods 12-1-1 in the T-shaped handrail frame 12-1, and each first longitudinal rod 12-2 is matched with two Z-shaped connecting rods 12-3; the outer side ends of the two Z-shaped connecting rods 12-3 can be rotatably sleeved on the first longitudinal rod 12-2, the inner side ends of the two Z-shaped connecting rods 12-3 can be rotatably sleeved on the second longitudinal rod 12-4, and the front end and the rear end of the second longitudinal rod 12-4 are connected with a vertical mounting plate 12-5 fixedly arranged on the side surface of the bed frame through bearing seats; a third longitudinal rod 12-6 is fixedly arranged at the corner of the two Z-shaped connecting rods 12-3 positioned at the lowest part, and the third longitudinal rod 12-6 is rotatably arranged at the upper end of a fourth connecting rod 11-6 in the connecting rod type linkage mechanism in a penetrating way; the lifting type handrail has a simple structure and is convenient to connect, and the third longitudinal rod 12-6 is pushed and pulled through the connecting rod type linkage mechanism so as to drive the T-shaped handrail frame 12-1 to do lifting movement.

Continuing and combining with a graph 10, the first large-amplitude tilt driving mechanism and the second large-amplitude tilt driving mechanism have the same structure and respectively comprise a third push-pull rod 6-8, a first linear sliding module and a first motor 6-7 for controlling the first linear sliding module to slide, the first linear sliding module comprises a spline lead screw 6-1, a spline nut 6-2 and a first sliding plate 6-3, and the first sliding plate 6-3 is fixedly provided with the spline nut 6-2 and a first guide sleeve 6-4; the spline nut 6-2 is sleeved on the spline screw rod 6-1, and the first guide sleeve 6-4 is sleeved on the first guide rod 6-5; both ends of the spline screw rod 6-1 and both ends of the first guide rod 6-5 are respectively and rotatably supported on a first support beam and a second support beam in the middle welding frame 1-2 or the base welding frame 1-3; one end of the spline screw 6-1 is connected with an output shaft of a first motor 6-7 through a first worm gear reducer 6-6 arranged on a reducer mounting plate on the middle welding frame or the base welding frame; the third push-pull rod 6-8 is arranged above the first sliding plate 6-3, and the third push-pull rod 6-8 and the first sliding plate 6-3 are arranged in parallel; two ends of the third push-pull rod 6-8 are rotatably supported on two first supporting blocks 6-9 fixedly arranged on the first sliding plate 6-3; the third push-pull rod 6-8 is rotatably arranged at one end of the first connecting rod 6-10 in a penetrating way, and the other end of the first connecting rod 6-10 is rotatably sleeved on the first push-pull rod 4 or the second push-pull rod 5;

the large-amplitude inclination driving mechanism is simple in structure, convenient to connect and ingenious in design, when the large-amplitude inclination state is implemented, the first motor works and drives the spline lead screw to rotate through the worm gear reducer, the rotation of the spline lead screw can drive the sliding plate to slide, the sliding plate slides to push and pull the push-pull rod through the first connecting rod, and therefore the purpose of pushing and pulling the top welding frame or the middle welding frame is achieved; and when being in implementation small-amplitude swing state, first motor is out of work, because the output shaft of worm gear reduction unit and first motor is passed through to the one end of spline lead screw, worm gear reduction unit possesses self-locking function, consequently, the spline lead screw can not rotate, because the straight row ball in the spline is female can realize reciprocal linear motion under the irrotational condition of spline lead screw, consequently, the small-amplitude swing of top welding frame or middle part welding frame can drive the sliding plate among the linear sliding module and slide, linear sliding module plays the guide effect this moment, make the small-amplitude swing more reliable.

Continuing and combining with FIG. 9, the first small-amplitude swing driving mechanism and the second small-amplitude swing driving mechanism have the same structure, and both comprise a gear 7-8, a sector 7-2, a mounting seat 7-1 fixedly arranged on the middle welding frame 1-2 or the base welding frame 1-3 and an arc-shaped gear ring 7-4 capable of being meshed with the gear 7-8, a third rotating shaft 7-3 is arranged at the circle center of the sector 7-2, and two ends of the third rotating shaft 7-3 are respectively and rotatably supported on two third ear plates of the mounting seat 7-1; the sector block 7-2 is driven by an eccentric mechanism to swing; an arc-shaped track 7-2-1 and flanges 7-2-2 positioned at two ends of the sector-shaped track 7-2-1 are processed on the circumferential surface of the sector-shaped block 7-2; the arc-shaped gear ring 7-4 is arranged on the fan-shaped block 7-2 in a manner of sliding connection with the arc-shaped track 7-2-1 through an arc-shaped groove on the inner circumferential surface of the arc-shaped gear ring 7-4;

the small-amplitude swing driving mechanism has a simple structure and is ingenious in design, and the small-amplitude swing driving mechanism can realize small-amplitude swing-stop-reverse small-amplitude swing when working, can drive the body of the old lying on the bed plate to swing, can achieve the effects of relaxing muscles, enhancing blood circulation and relieving fatigue, and brings better enjoyment to the old; the eccentric mechanism can drive the sector block to swing, because the circumferential surface of the sector block is provided with the arc-shaped track and the flanges positioned at two ends of the sector-shaped track, and the arc-shaped gear ring is arranged on the sector block in a manner of sliding connection with the arc-shaped track through the arc-shaped groove on the inner circumferential surface of the arc-shaped gear ring, the sector block swings and the arc-shaped gear ring slides on the arc-shaped track, at the moment, the arc-shaped gear ring and the gear do not have relative meshing motion, the arc-shaped gear ring can not drive the gear to rotate and is in; the arc-shaped gear ring is meshed with the gear when the sector swings and the arc-shaped gear ring impacts the flange, the arc-shaped gear ring drives the gear to rotate, and the gear drives the supporting shaft to rotate together and is in a swinging state;

the eccentric mechanism comprises a second motor 7-5 and an eccentric wheel 7-6, the second motor 7-5 is fixedly arranged on a bottom plate of the mounting seat 7-1, and a horizontal output shaft of the second motor 7-5 is fixedly arranged at the circle center of the eccentric wheel 7-6; the wheel surface of the eccentric wheel 7-6 is hinged with the outer side end of the fifth connecting rod 7-7, and the inner side end of the fifth connecting rod 7-7 is hinged on the sector surface of the sector block 7-2; the eccentric mechanism is simple in structure and convenient to connect, the second motor 7-5 works to drive the eccentric wheel 7-6 to rotate, and the eccentric wheel 7-6 rotates to drive the sector block 7-2 to swing around the axis of the third rotating shaft 7-3 through the fifth connecting rod 7-7.

Continuing and combining with the drawings of fig. 12 and 13, the first electromagnetic locking component and the second electromagnetic locking component have the same structure, and both comprise a plurality of operating sliders 9-2 which are uniformly distributed along the circumference of the intermediate shaft shell A-1 and telescopically arranged on the intermediate shaft shell A-1, and an electromagnetic telescopic driving mechanism which is used for controlling the plurality of operating sliders 9-2 to simultaneously extend out to be clamped and fixed with the clamping grooves 7-8-1 on the gears 7-8 or simultaneously retract to release the gears 7-8, the electromagnetic telescopic driving mechanism comprises a hollow sliding shaft 9-3 which is slidably arranged in the intermediate shaft shell A-1 and an electromagnetic valve 9-1 which is arranged at two sides of the hollow sliding shaft 9-3 and fixedly arranged on the intermediate shaft shell A-1, the hollow sliding shaft 9-3 is slidably sleeved on the fixed shaft 9-4, the hollow sliding shaft 9-3 is controlled by two electromagnetic valves 9-1 to reciprocate on a fixed shaft 9-4; a plurality of running chutes 9-3-1 are uniformly distributed on the hollow sliding shaft 9-3 along the circumferential direction of the hollow sliding shaft, and the bottom wall of each running chute 9-3-1 is a driving inclined surface 9-3-2 for driving the running slide block 9-2 to do telescopic motion; the lower end of the running slide block 9-2 is arranged on the driving inclined plane 9-3-2, the lower surface of the running slide block 9-2 is a sliding inclined plane 9-2-2 matched with the driving inclined plane, and the guide slide block 9-2-1 on the sliding inclined plane 9-2 is in sliding connection with the guide chute 9-3-3 arranged on the driving inclined plane 9-3-2, so that the running slide block can move more stably; the lower end of the operating slide block 9-2 is fixedly connected with one end of a spring 9-5, and the other end of the spring 9-5 is fixedly connected with a spring seat 9-6 fixedly arranged on the fixed shaft 9-4 after penetrating through the guide chute 9-3-3; the upper end of the operating slide block 9-2 is connected with an outlet arranged on the middle shaft shell A-1 in a sliding way;

the electromagnetic locking assembly is simple in structure and convenient to connect, switching of large-amplitude tilting motion and small-amplitude swinging motion can be achieved by controlling the electromagnetic locking assembly, the electromagnetic telescopic driving mechanism can control the plurality of running sliding blocks to simultaneously extend out or retract back, further the control gear and the supporting shaft to rotate together or the control gear and the supporting shaft to rotate relatively, when one of the two electromagnetic valves is electrified, the hollow sliding shaft is adsorbed to the electrified electromagnetic valve to move, and the two electromagnetic valves are alternatively electrified to control the hollow sliding shaft to do reciprocating motion; when the operation sliding blocks ascend along the driving inclined plane, the operation sliding blocks simultaneously extend out under the action of the driving inclined plane, the gear and the supporting shaft are connected together in a mode that the operation sliding blocks are clamped with clamping grooves in the gear, and when the operation sliding blocks descend along the driving inclined plane, the operation sliding blocks retract simultaneously under the action of the springs, so that the gear and the supporting shaft are in clearance fit.

The old people assisting bed meeting the requirement of comfort level and facilitating getting on and off the bed has the advantages of being simple in structure, convenient to connect and powerful in function, being capable of achieving a small-amplitude swinging function of the bed board, a large-amplitude inclination function of the bed board, an automatic lifting function of the armrests and a leg bending and back lifting movement function, driving the armrests to lift while the bed board is inclined left and right greatly, better assisting the old people getting on and off the bed, and solving the problem of difficulty in transfer between a wheelchair and the bed.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. The utility model provides a satisfy comfort level requirement and make things convenient for old person's bed of getting on or off bed, includes bed board and bedstead, its characterized in that: the bed frame comprises a top welding frame (1-1), a middle welding frame (1-2) and a base welding frame (1-3), and the bed board is fixedly arranged on the top welding frame (1-1); a first support shaft (2) fixedly arranged in the middle of the top welding frame (1-1) is installed in the middle of the upper surface of the middle welding frame (1-2) through a bearing seat, a second support shaft (3) fixed in the middle of the lower surface of the middle welding frame (1-2) is installed in the middle of the base welding frame (1-3) through a bearing seat, the first support shaft (2) is arranged in the left-right direction, and the second support shaft (3) is arranged in the front-back direction;

the middle welding frame (1-2) is provided with a first small-amplitude swinging driving mechanism and a first large-amplitude tilting driving mechanism; the first large-amplitude inclination driving mechanism is connected with a first push-pull rod (4) which is rotatably arranged on the top welding frame (1-1) and is used for controlling the top welding frame (1-1) to be inclined greatly around the axis of the first supporting shaft (2) by pushing and pulling the first push-pull rod (4) through the first large-amplitude inclination driving mechanism; the gear (7-8) in the first small-amplitude swing driving mechanism is in clearance fit with the first supporting shaft (2), and the gear (7-8) in the first small-amplitude swing driving mechanism is connected with the first supporting shaft (2) through a first electromagnetic stopping assembly and used for controlling whether the first small-amplitude swing driving mechanism can drive the first supporting shaft (2) to rotate or not through the first electromagnetic stopping assembly, so that whether the top welding frame (1-1) swings around the axis of the first supporting shaft (2) in a small amplitude or not and whether the first small-amplitude swing driving mechanism and the first large-amplitude tilt driving mechanism are switched or not is realized;

a second small-amplitude swinging driving mechanism and a second large-amplitude tilting driving mechanism are arranged on the base welding frame (1-3); the second large-amplitude inclination driving mechanism is connected with a second push-pull rod (5) which is rotatably arranged on the middle welding frame (1-2) and is used for controlling the middle welding frame (1-2) to be inclined greatly around the axis of the second support shaft (3) by pushing and pulling the second push-pull rod (5) through the second large-amplitude inclination driving mechanism; gears (7-8) in the second small-amplitude swing driving mechanism are in clearance fit with the second support shaft (3), and the gears (7-8) in the second small-amplitude swing driving mechanism are connected with the second support shaft (3) through a second electromagnetic stop assembly to control whether the second small-amplitude swing driving mechanism can drive the second support shaft (3) to rotate or not through the second electromagnetic stop assembly, so that whether the middle welding frame swings around the axis of the second support shaft (3) in a small amplitude or not and whether the second small-amplitude swing driving mechanism and the second large-amplitude tilt driving mechanism are switched or not is realized;

the left side and the right side of the bed board are provided with lifting handrails, and each lifting handrail is driven to lift by a power output end of a connecting rod type linkage mechanism with a self-locking function; waist-shaped holes (11-1-1) arranged in the left-right direction on the power input ends of the two connecting rod type linkage mechanisms are respectively sleeved on two second push-pull rods (5) rotatably arranged on the middle welding frame (1-2) so as to realize the linkage of the lifting handrail and the second large-amplitude inclination driving mechanism and the mutual independence of the lifting handrail and the second small-amplitude swing driving mechanism through the matching of the waist-shaped holes (11-1-1) and the second push-pull rods (5).

2. The geriatric bed of claim 1 that meets comfort requirements and facilitates getting on and off the bed, wherein: the connecting rod type linkage mechanism comprises an L-shaped vertical driving plate (11-1), a connecting rod mounting seat (11-2) and an L-shaped connecting rod (11-3), wherein a first rotating shaft (11-7) is fixedly arranged at the corner of the L-shaped connecting rod (11-3), and two ends of the first rotating shaft (11-7) are rotatably supported on two first lug plates on the connecting rod mounting seat (11-2); the free end of the outer side rod of the L-shaped connecting rod (11-3) is hinged to the second connecting rod (11-4), wherein the hinged point of the outer side rod of the L-shaped connecting rod (11-3) and the second connecting rod (11-4) is always positioned outside the first rotating shaft (11-7); the outer side end of the second connecting rod (11-4) is hinged with the lower end of the fourth connecting rod (11-6), and the upper end of the fourth connecting rod (11-6) is connected with the lifting handrail so as to drive the lifting handrail to do lifting motion through the fourth connecting rod (11-6); the inner side end of the second connecting rod (11-4) is hinged with the outer side end of the third connecting rod (11-5), the inner side end of the third connecting rod (11-5) is fixedly arranged on a second rotating shaft (11-8), and the two ends of the second rotating shaft (11-8) are rotatably supported on the connecting rod mounting seat (11-2) and are positioned on the two second lug plates on the inner side of the first lug plate; the free end of the inner side rod of the L-shaped connecting rod (11-3) penetrates through the two second lug plates and then is hinged with the vertical plate of the L-shaped vertical driving plate (11-1), and the transverse plate of the L-shaped vertical driving plate (11-1) is connected with the second push-pull rod (5) through the waist-shaped hole (11-1-1).

3. The geriatric bed of claim 2 which meets comfort requirements and facilitates getting on and off the bed, wherein: the lifting type handrail comprises a T-shaped handrail frame (12-1), at least two first longitudinal rods (12-2) are fixedly arranged between two vertical rods (12-1-1) in the T-shaped handrail frame (12-1), and each first longitudinal rod (12-2) is matched with two Z-shaped connecting rods (12-3); the outer ends of the two Z-shaped connecting rods (12-3) can be rotatably sleeved on the first longitudinal rod (12-2), the inner ends of the two Z-shaped connecting rods (12-3) can be rotatably sleeved on the second longitudinal rod (12-4), and the front end and the rear end of the second longitudinal rod (12-4) are connected with a vertical mounting plate (12-5) fixedly arranged on the side face of the bed frame through bearing seats; and a third longitudinal rod (12-6) is fixedly arranged at the corner of the two Z-shaped connecting rods (12-3) positioned at the lowest part, and the third longitudinal rod (12-6) is rotatably arranged at the upper end of a fourth connecting rod (11-6) in the connecting rod type linkage mechanism in a penetrating way.

4. The geriatric bed of claim 1 that meets comfort requirements and facilitates getting on and off the bed, wherein: the first large-amplitude inclination driving mechanism and the second large-amplitude inclination driving mechanism are consistent in structure and respectively comprise a third push-pull rod (6-8), a first linear sliding module and a first motor (6-7) for controlling the first linear sliding module to slide and work, the first linear sliding module comprises a spline lead screw (6-1), a spline nut (6-2) and a first sliding plate (6-3), and the spline nut (6-2) and a first guide sleeve (6-4) are fixedly arranged on the first sliding plate (6-3); the spline nut (6-2) is sleeved on the spline screw rod (6-1), and the first guide sleeve (6-4) is sleeved on the first guide rod (6-5); both ends of the spline screw rod (6-1) and both ends of the first guide rod (6-5) are respectively and rotatably supported on a first supporting beam and a second supporting beam in the middle welding frame (1-2) or the base welding frame (1-3); one end of the spline screw rod (6-1) is connected with an output shaft of a first motor (6-7) through a first worm gear reducer (6-6) arranged on a reducer mounting plate on the middle welding frame or the base welding frame; the third push-pull rod (6-8) is arranged above the first sliding plate (6-3), and the third push-pull rod (6-8) and the first sliding plate (6-3) are arranged in parallel; two ends of the third push-pull rod (6-8) are rotatably supported on two first supporting blocks (6-9) fixedly arranged on the first sliding plate (6-3); the third push-pull rod (6-8) can be rotatably arranged at one end of the first connecting rod (6-10) in a penetrating way, and the other end of the first connecting rod (6-10) can be rotatably sleeved on the first push-pull rod (4) or the second push-pull rod (5).

5. The geriatric bed of claim 1 that meets comfort requirements and facilitates getting on and off the bed, wherein: the first small-amplitude swing driving mechanism and the second small-amplitude swing driving mechanism are consistent in structure and respectively comprise a gear (7-8), a fan-shaped block (7-2), a mounting seat (7-1) and an arc-shaped gear ring (7-4), wherein the mounting seat (7-1) is fixedly arranged on the middle welding frame (1-2) or the base welding frame (1-3), the arc-shaped gear ring can be meshed with the gear (7-8), a third rotating shaft (7-3) is arranged at the circle center of the fan-shaped block (7-2), and two ends of the third rotating shaft (7-3) are respectively and rotatably supported on two third lug plates of the mounting seat (7-1); the fan-shaped block (7-2) is driven by an eccentric mechanism to swing; an arc-shaped track (7-2-1) and flanges (7-2-2) positioned at two ends of the fan-shaped track (7-2-1) are processed on the circumferential surface of the fan-shaped block (7-2); the arc-shaped gear ring (7-4) is arranged on the fan-shaped block (7-2) in a manner of sliding connection with the arc-shaped track (7-2-1) through the arc-shaped groove on the inner circumferential surface of the arc-shaped gear ring (7-4).

6. The geriatric bed of claim 5 which meets comfort requirements and facilitates getting on and off the bed, wherein: the eccentric mechanism comprises a second motor (7-5) and an eccentric wheel (7-6), the second motor (7-5) is fixedly arranged on a bottom plate of the mounting seat (7-1), and a horizontal output shaft of the second motor (7-5) is fixedly arranged at the circle center of the eccentric wheel (7-6); the wheel surface of the eccentric wheel (7-6) is hinged with the outer side end of the fifth connecting rod (7-7), and the inner side end of the fifth connecting rod (7-7) is hinged on the sector surface of the sector block (7-2).

7. The geriatric bed of claim 1 that meets comfort requirements and facilitates getting on and off the bed, wherein: the structure of the first supporting shaft (2) is consistent with that of the second supporting shaft (3), the first supporting shaft (2) and the second supporting shaft (3) both comprise a middle shaft shell (A-1) used for mounting a first electromagnetic locking component or a second electromagnetic locking component and a connecting shaft section (A-2) fixedly arranged on two sides of the middle shaft shell (A-1), openings at two ends of the middle shaft shell (A-1) are both in threaded connection with end covers (A-4), and the end covers (A-4) are connected with the connecting shaft section (A-2) in a clamping mode of a regular polygon convex block (A-4-1) and a regular polygon groove; the end part of the free end of the connecting shaft section (A-2) is provided with a regular polygon connecting block (A-3), and the connecting shaft section (A-2) is connected with a connecting plate (10) fixedly arranged on the top welding frame (1-1) or the middle welding frame (1-2) in a mode that the regular polygon connecting block (A-3) is inserted into a regular polygon hole formed in the connecting plate (10).

8. The geriatric bed of claim 7 that meets comfort requirements and facilitates getting on and off the bed, wherein: the first electromagnetic stopping component and the second electromagnetic stopping component have the same structure, and both comprise a plurality of operating slide blocks (9-2) which are uniformly distributed along the circumference of the middle shaft shell (A-1) and telescopically arranged on the middle shaft shell (A-1) and an electromagnetic telescopic driving mechanism which is used for controlling the plurality of operating slide blocks (9-2) to simultaneously extend out to be clamped and fixed with a clamping groove (7-8-1) on the gear (7-8) or simultaneously retract to release the gear (7-8), the electromagnetic telescopic driving mechanism comprises a hollow sliding shaft (9-3) which is slidably arranged in the middle shaft shell (A-1) and an electromagnetic valve (9-1) which is arranged at two sides of the hollow sliding shaft (9-3) and fixedly arranged on the middle shaft shell (A-1), the hollow sliding shaft (9-3) is slidably sleeved on the fixed shaft (9-4), the hollow sliding shaft (9-3) is controlled by two electromagnetic valves (9-1) to reciprocate on the fixed shaft (9-4); a plurality of running chutes (9-3-1) are uniformly distributed on the hollow sliding shaft (9-3) along the circumferential direction of the hollow sliding shaft, and the bottom wall of each running chute (9-3-1) is a driving inclined plane (9-3-2) for driving the running slide block (9-2) to do telescopic motion; the lower end of the running slide block (9-2) is arranged on the driving inclined plane (9-3-2), the lower surface of the running slide block (9-2) is a sliding inclined plane (9-2-2) matched with the driving inclined plane, and a guide slide block (9-2-1) on the sliding inclined plane (9-2-2) is in sliding connection with a guide sliding chute (9-3-3) arranged on the driving inclined plane (9-3-2); the lower end of the operating slide block (9-2) is fixedly connected with one end of a spring (9-5), and the other end of the spring (9-5) penetrates through the guide chute (9-3-3) and is fixedly connected with a spring seat (9-6) fixedly arranged on the fixed shaft (9-4); the upper end of the operating slide block (9-2) is connected with an outlet arranged on the middle shaft shell (A-1) in a sliding way.

9. The geriatric bed of claim 1 that meets comfort requirements and facilitates getting on and off the bed, wherein: the bed plate consists of a front bed plate (8-1), a middle bed plate (8-2) and a rear bed plate (8-3), and the rear end of the front bed plate (8-1) is hinged with the middle bed plate (8-2) and the front ends of the middle bed plate (8-2) and the rear bed plate (8-3); the middle bed plate (8-2) is fixedly arranged on the top welding frame (1-1); the front bed board (8-1) and the rear bed board (8-3) are driven by a leg bending and back lifting linkage mechanism to rotate together; the leg bending and back lifting linkage mechanism comprises a second linear sliding module arranged on the top welding frame (1-1), and a second sliding plate (13-1) in the second linear sliding module is driven by a third motor (13-2) to slide back and forth; a fourth push-pull rod (14-1) parallel to the second sliding plate (13-1) is arranged above the second sliding plate (13-1), and two ends of the fourth push-pull rod (14-1) are rotatably supported on two second supporting blocks fixedly arranged on the second sliding plate (13-1); the fourth push-pull rod (14-1) is rotatably arranged at one end of the sixth connecting rod (14-2) in a penetrating way, and the other end of the sixth connecting rod (14-2) is rotatably sleeved at the middle part of the seventh connecting rod (14-3); the front end of the seventh connecting rod (14-3) is hinged with one end of the eighth connecting rod (14-4), and the other end of the eighth connecting rod (14-4) is vertically and fixedly arranged on the back of the front bed plate (8-1); the rear end of the seventh connecting rod (14-3) is hinged with one end of a ninth connecting rod (14-5), and the other end of the ninth connecting rod (14-5) is vertically and fixedly arranged on the back of the rear bed board (8-3).

10. The geriatric bed of claim 9 that meets comfort requirements and facilitates getting on and off the bed, wherein: the second linear sliding module comprises a screw rod (13-3), a ball nut (13-4) and a second sliding plate (13-1); a second guide sleeve (13-5) and a ball nut (13-4) are fixedly arranged on the second sliding plate (13-1), the ball nut (13-4) is sleeved on the screw rod (13-3), and the second guide sleeve (13-5) is sleeved on the second guide rod (13-6); both ends of the screw rod (13-3) and both ends of the second guide rod (13-6) are respectively and rotatably supported on the first supporting beam and the second supporting beam in the top welding frame (1-1); one end of the screw rod (13-3) is connected with an output shaft of a third motor (13-2) through a second worm gear reducer (13-7), and the second worm gear reducer (13-7) is fixedly arranged on a reducer mounting plate in the top welding frame (1-1).