CN112353586B

CN112353586B - Medical electric bed

Info

Publication number: CN112353586B
Application number: CN202011059218.6A
Authority: CN
Inventors: 程进; 陈权辉
Original assignee: Chongqing Shunmeiji Medical Devices Co ltd
Current assignee: Chongqing Shunmeiji Medical Instrument Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2022-04-15
Anticipated expiration: 2040-09-30
Also published as: CN112353586A

Abstract

The invention provides a medical electric bed device, which comprises a bottom support frame, a bed plate assembly and a lifting mechanism, wherein the bottom support frame is arranged on the bottom support frame; the lifting mechanism comprises a supporting plate, a rotating connecting rod, a lifting push rod and a middle support hinged to the middle part of the bed plate component; the two supporting plates, the two rotating connecting rods and the two lifting push rods are symmetrically arranged on two sides of the middle support; one end of the lifting push rod is hinged to the middle support, the other end of the lifting push rod is hinged to the rotating connecting rods, one of the rotating connecting rods is further hinged to the bottom supporting frame, and the other rotating connecting rod is connected with the bottom supporting frame through a rotating shaft and a horizontally arranged strip hole in a matched mode; the supporting plate is fixed on the bed plate assembly and is also connected with the rotating connecting rod through a hinged plate; two ends of the hinged plate are respectively hinged on the supporting plate and the rotating connecting rod; the hinged position of the lifting push rod of the rotating connecting rod is higher than the connecting position of the rotating connecting rod and the bed board assembly. The invention solves the problem of unstable lifting structure in the prior art.

Description

Medical electric bed

Technical Field

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

Background

The electric bed is generally used in medical scenes with severe symptoms, helps patients with inconvenient actions to sit up, and meets the needs of daily life and medical treatment; the electric bed also needs to have the lifting function and the function of respectively lifting the bed head and the bed tail, so that a doctor can conveniently carry out clinical operation on a patient; with the development of the technology, the lifting function of the electric bed is more abundant and is also provided with functions of vibration massage, music playing and the like. The lifting function is abundant, and simultaneously, higher requirements are put forward to the stability of going up and down and the material of elevation structure. The simple lifting structure which is relatively stable cannot meet the abundance of lifting functions, and the complex lifting structure is not easy to guarantee stability.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a medical electric bed, which solves the problem of unstable lifting in the prior art.

According to an embodiment of the present invention, a medical electric bed apparatus includes a bottom support frame, a bed plate assembly, and a lifting mechanism; the lifting mechanism comprises a middle support hinged at the middle part of the bed board assembly, two rotating connecting rods symmetrically arranged at two sides of the middle support, two lifting push rods and two supporting plates; one end of the lifting push rod is hinged to the middle support, the other end of the lifting push rod is hinged to the rotating connecting rods, one of the rotating connecting rods is further hinged to the bottom supporting frame, and the other rotating connecting rod is connected with the bottom supporting frame through a rotating shaft and a horizontally arranged strip hole in a matched mode; the supporting plate is fixed on the bed plate assembly and is also connected with the rotating connecting rod through a hinged plate; two ends of the hinged plate are respectively hinged on the supporting plate and the rotating connecting rod; the hinged position of the lifting push rod of the rotating connecting rod is higher than the connecting position of the rotating connecting rod and the bed board assembly.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, the two lifting push rods are matched with the two rotating connecting rods, and the lifting push rods are utilized to push the rotating connecting rods to cause height change, so that two ends of the bed board assembly are lifted respectively or simultaneously. The hinged plate is used for connecting the supporting plate and the rotating connecting rod, so that the direct connection of the supporting plate and the rotating connecting rod is avoided, a space for adjusting the positions of the supporting plate and the rotating connecting rod is provided, the horizontal variation of the bed plate is absorbed, and relatively stable lifting can be achieved; meanwhile, stress concentration caused by direct connection of the rotating connecting rod and the supporting plate is avoided, and the service life of the equipment is prolonged. The arrangement of the strip holes greatly reduces the starting difficulty of the lifting push rod.

Drawings

FIG. 1 is a schematic diagram of the present invention in its erected configuration.

Fig. 2 is a schematic view of the lifting mechanism of the present invention when lowered.

FIG. 3 is a schematic comparison of the inner and outer panels of the expansion panel.

Fig. 4 is a schematic view of a limiting groove structure.

Fig. 5 is a schematic structural view of the retractable plate in the shortest state.

Fig. 6 is a schematic view of the longest structure of the expansion plate.

Fig. 7 is a schematic view of the engagement of the latch shaft and the barb in one of the positions.

In the above drawings: 1. a bottom support frame; 2. a lifting mechanism; 3. a bed board assembly; 4. a retractable plate; 21. a middle support; 22. a lifting push rod; 23. rotating the connecting rod; 24. a support plate; 25. a first connecting plate; 26. a second connecting plate; 27. a bar hole; 28. a hinge plate; 31. a bed board support frame; 32. a back plate; 33. a leg plate; 34. a foot plate; 35. supporting the push rod; 36. supporting the connecting rod; 41. an outer plate; 42. an inner plate; 43. clamping a shaft; 44. a card slot; 45. a barb; 46. clamping a plate; 47. a limiting groove; 471. a first slot cavity; 472. a second slot cavity; 473. a third slot cavity; 474. and (4) protruding.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

As shown in fig. 1-2, an embodiment of the present invention provides a medical electric bed device, which includes a bottom support frame 1, a bed board assembly 3, and a lifting mechanism 2; the lifting mechanism 2 comprises a supporting plate 24, a rotating connecting rod 23, a lifting push rod 22 and a middle support 21 hinged to the middle part of the bed plate component; the two supporting plates 24, the two rotating connecting rods 23 and the two lifting push rods 22 are symmetrically arranged on two sides of the middle support 21; one end of the lifting push rod 22 is hinged on the middle support 21, the other end of the lifting push rod is hinged with the rotating connecting rods 23, one rotating connecting rod 23 is further hinged with the bottom support frame 1, and the other rotating connecting rod 23 is connected with the bottom support frame 1 through a rotating shaft and a horizontally arranged strip hole 27 in a matched mode; the support plate 24 is fixed on the bed plate assembly 3, and the support plate 24 is also connected with the rotating connecting rod 23 through a hinged plate 28; the two ends of the hinge plate 28 are respectively hinged on the support plate 24 and the rotating connecting rod 23; the hinged position of the lifting push rod 22 of the rotating connecting rod 23 is higher than the connecting position of the rotating connecting rod 23 and the bed plate component 3. The bottom support frame 1 is provided with a first connecting plate 25 and a second connecting plate 26, the lifting push rod 22 is hinged on the first connecting plate 25, and the strip hole 27 is formed in the second connecting plate 26. Make holistic supported position in bottom sprag frame 1 top, the rotation process is difficult to be restricted, rotates connecting rod 23 itself simultaneously and has certain buckling, and the position is enough low when guaranteeing the bed board subassembly 3 and descends.

As described in the scheme, the working process of the invention is as follows: fig. 2 shows the state of the bedplate assembly 3 when lowered, wherein a part of the structure is simplified and a part of the structure is processed in a perspective way for clearly showing the working structure. When the lifting push rod 22 is lifted, the rotating shaft of the rotating connecting rod 23 firstly moves horizontally in the strip hole 27 along the direction far away from the middle support 21; at the same time, the hinge plate 28 rotates as an extended link of the support plate 24 until the other end of the shaft reaches the bar hole 27 and cannot move. The lifting push rod 22 continues to extend, the rotating connecting rods 23 rotate around the respective rotating shafts, the two lifting plates are gradually lifted, in the process, the hinge plate 28 rotates for a certain angle along with the rotation of the rotating connecting rods 23, the supporting plate 24 does not make any change in the horizontal direction, and the whole body presents a stable lifting state until the lifting is finished. In the process, horizontal application and vertical movement are performed in sequence, and the lifting process is stable; the arrangement of the strip holes 27 enables the lifting push rod 22 to have a better starting angle in the translation process, and greatly reduces the starting difficulty of the lifting push rod 22; after descending, the rotating shaft reaches the other end of the strip hole 27, and a good supporting angle can be provided for the lifting push rod 22, so that reasonable stress is guaranteed.

One of the rotating links 23 rotates around the first connecting plate 25 and drives the supporting plate 24 to rise through the hinge plate 28; the other rotating connecting rod 23 rotates to drive the supporting plate 24 to ascend, and meanwhile, the supporting plate also performs yielding in the horizontal direction, so that smooth rotation is guaranteed. The length of the hinged plate 28 changes from vertical to inclined at a certain angle after rotation, and the change absorbs the horizontal displacement of the middle support 21 relative to the first connecting plate 25 or the second connecting plate 26, so that the horizontal displacement of the bed plate assembly 3 in the lifting process is eliminated, the integral lifting is stable, and the bed body cannot move back and forth in the lifting process. And, the two hinge plates 28 work in the same way, so that the running of the two lifting push rods 22 and the state in the running process are kept consistent. When the bedplate assembly 3 needs to be inclined, one of the lifting push rods 22 is extended, and the other lifting push rod 22 is shortened, so that the inclination of the bedplate assembly 3 can be realized.

Further, as shown in fig. 1, the bed board assembly 3 includes a bed board support frame 31, a back plate 32, a leg plate 33 and two supporting assemblies; the supporting component comprises a hinged hanging plate, a supporting connecting rod 36 and a supporting push rod 35; the hinged hanging plates are hinged to the bed plate supporting frame 31, two ends of the supporting push rod 35 are hinged to the supporting connecting rod 36 and the hinged hanging plates respectively, the two supporting push rods are hinged to the bed plate assembly 3 respectively, and the back plate 32 and the leg plate 33 are supported by the two supporting connecting rods 36 respectively. The supporting push rod 35 extends to drive the supporting connecting rod 36 to rotate, and the supporting connecting rod 36 further drives the self-supporting plate to rotate upwards. In fig. 3, the supporting structure is shown for clarity, and one of the groups of supporting push rods 35 and supporting connecting rods 36 is hidden, and those skilled in the art can refer to the arrangement of the other group or other common connecting rod mechanisms.

Further, as shown in fig. 1, the bed board assembly 3 further includes a foot board 34, one end of the foot board 34 is hinged to the free end of the leg board 33, the other end of the foot board is supported by two expansion boards 4, and two ends of the expansion board 4 are respectively hinged to the foot board 34 and the bed board support frame 31. The leg plate 33 can support the legs of the patient, so that the sitting posture is more comfortable.

The extension board 4 should have a certain supporting force for supporting the patient's foot and can extend with the rising of the foot board 34, but if a push rod is provided for it alone, the cost is too high, which is not suitable, and the foot is light, which can realize the supporting step completely manually. Therefore, as shown in fig. 3-7, two ends of the expansion plate 4 are respectively hinged on the end of the foot plate 34 and the bed plate support frame 31; the expansion plate 4 comprises an inner plate 42, an outer plate 41 and a clamping shaft 43; the outer plate 41 is internally provided with an inserting groove for inserting the inner plate 42; the clamp shaft 43 is perpendicular to the inner plate 42 and the outer plate 41, a clamp groove 44 for the clamp shaft 43 to move is arranged on the outer plate 41, a barb 45 which is matched with the clamp shaft 43 to limit the retraction of the expansion plate 4 is arranged on one side of the clamp groove 44, and a limit groove 47 for the clamp shaft 43 to move is arranged on the inner plate 42; a first groove cavity 471, a second groove cavity 472 and a third groove cavity 473 are arranged on the limiting groove 47, the first groove cavity 471 corresponds to the inner side of the barb 45, the second groove cavity 472 corresponds to the outer side of the barb 45, the second groove cavity 472 and the third groove cavity 473 are not in the range of the barb 45, and a protrusion 474 for guiding the clamping shaft 43 to the barb 45 is arranged between the second groove cavity 472 and the third groove cavity 473; when the expansion plate 4 is expanded, the barb 45 is directed downward, the second slot 472 is located above the third slot 473, and the first slot 471 is located between the second slots 472.

Further, the latch shaft 43 is disposed on the latch 46, and is slidably connected in the inner plate 42, and the maximum width of the latch 46 is greater than the maximum widths of the latch groove 44 and the stopper groove 47. As shown in fig. 3, the shaded portion in fig. 3 indicates the position of the chucking plate 46, inside the inner plate 42. The catch plate 46 prevents the catch shaft 43 from slipping out in a direction perpendicular to the inner plate 42. The movement may be limited by other structures of the inner plate 42 and the outer plate 41, for example, a locking groove 44 is not provided on one side of the outer plate 41 to limit the axial movement of the locking shaft 43.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. A medical electric bed is characterized in that: comprises a bottom support frame, a bed board component and a lifting mechanism; the lifting mechanism comprises a supporting plate, a rotating connecting rod, a lifting push rod and a middle support hinged to the middle part of the bed plate component; the two supporting plates, the two rotating connecting rods and the two lifting push rods are symmetrically arranged on two sides of the middle support; one end of the lifting push rod is hinged to the middle support, the other end of the lifting push rod is hinged to the rotating connecting rods, one of the rotating connecting rods is further hinged to the bottom supporting frame, and the other rotating connecting rod is connected with the bottom supporting frame through a rotating shaft and a horizontally arranged strip hole in a matched mode; the supporting plate is fixed on the bed plate assembly and is also connected with the rotating connecting rod through a hinged plate; two ends of the hinged plate are respectively hinged on the supporting plate and the rotating connecting rod; the hinged position of the lifting push rod of the rotating connecting rod is higher than the connecting position of the rotating connecting rod and the bed board assembly, the bottom supporting frame is provided with a first connecting plate and a second connecting plate, the lifting push rod is hinged to the first connecting plate, and the strip hole is formed in the second connecting plate.

2. A medical electric bed as claimed in claim 1, wherein: the bed board assembly comprises a bed board support frame, a back board, leg boards and two supporting assemblies; the supporting component comprises a hinged hanging plate, a supporting connecting rod and a supporting push rod; the articulated link plate articulates on the bed board support frame, prop up the push rod both ends and articulate respectively on propping up connecting rod and articulated link plate, two prop up two and articulate respectively on the bed board subassembly, backplate and leg board still prop through two respectively and prop up the connecting rod support.

3. A medical electric bed as claimed in claim 2, wherein: the bed board assembly further comprises a foot board, one end of the foot board is hinged to the free end of the leg board, the other end of the foot board is supported through two telescopic boards, and two ends of each telescopic board are hinged to the foot board and the bed board support frame respectively.

4. The medical electric bed as claimed in claim 3, wherein both ends of the extension plate are hinged to the end of the foot plate and the support frame of the bed plate respectively; the telescopic plate comprises an inner plate, an outer plate and a clamping shaft; the outer plate is internally provided with a slot for the inner plate to be inserted; the clamp shaft is perpendicular to the inner plate and the outer plate, a clamp groove for the clamp shaft to move is formed in the outer plate, a barb matched with the clamp shaft to limit retraction of the telescopic plate is arranged on one side of the clamp groove, and a limiting groove for the clamp shaft to move is formed in the inner plate; a first groove cavity, a second groove cavity and a third groove cavity are arranged on the limiting groove, the first groove cavity corresponds to the inner side of the barb, the second groove cavity corresponds to the outer side of the barb, the second groove cavity and the third groove cavity are not in the barb range, and a bulge for guiding the clamping shaft to the barb range is arranged between the second groove cavity and the third groove cavity; when the expansion plate extends, the barb direction faces downwards, the second slot cavity is located above the third slot cavity, and the first slot cavity is located between the second slot cavity.

5. The medical electric bed as claimed in claim 4, wherein the latch shaft is disposed on a latch plate slidably connected in the inner plate and having a maximum width larger than maximum widths of the latch groove and the stopper groove.