CN112957193B

CN112957193B - Bed capable of preventing pressure sores

Info

Publication number: CN112957193B
Application number: CN202110135598.5A
Authority: CN
Inventors: 刘智慧; 李媛; 周俐; 尹长春; 陆永振
Original assignee: Chongqing General Hospital
Current assignee: Chongqing General Hospital
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2022-01-11
Anticipated expiration: 2041-02-01
Also published as: CN112957193A

Abstract

The invention belongs to the technical field of beds, and particularly relates to a bed for preventing pressure sores, which comprises an elastic bed plate, a guardrail, a support plate and an adjusting mechanism. The elastic bed board has three states, namely a downward bending state, an upward bending state and a straight state; the downward bending state is convenient for placing the nursed person, the upward bending state is convenient for turning over the nursed person, and the straight state can be used as a normal bed.

Description

Bed capable of preventing pressure sores

Technical Field

The invention belongs to the technical field of beds, and particularly relates to a bed capable of preventing pressure sores.

Background

For the old who are paralyzed or weak and weak, the old often lies in bed in the same posture under the condition of insufficient nursing; pressure sores can occur when the same area is pressed for a long time, particularly in areas with little fat, such as the back; in order to prevent the pressure sores, a caregiver needs to help to turn over frequently, but most of the cases are that the turning over is not helped by people for a long time, such as several hours, so that the bed capable of automatically turning over and generating the pressure sores is necessary to design. The invention designs a bed for preventing pressure sores to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a bed for preventing pressure sores, which is realized by adopting the following technical scheme.

A bed for preventing pressure sores comprises an elastic bed board, a guardrail, a bracket, a support plate and an adjusting mechanism, wherein an arc-shaped rack is fixedly installed at the front end of the support plate; a first motor is fixedly arranged on the bracket, and a first gear is fixedly arranged on an output shaft of the first motor; the support plate is arranged on the upper side of the support in a left-right arc-shaped swinging manner, and the first gear is meshed with the rack; four adjusting mechanisms are symmetrically arranged on the upper side of the support plate in the left-right direction, and two adjusting mechanisms on the same side of the four adjusting mechanisms are distributed in a front-back staggered manner; two beams are arranged on two sides of the bottom panel of the elastic bed board, two ends of each beam are respectively and symmetrically provided with two transmission blocks, and driving chutes are formed in the transmission blocks; the elastic bed board is arranged at the upper sides of the four adjusting mechanisms.

The adjusting mechanism comprises a first shifting plate, a second shifting plate, a fourth supporting plate, a first toothed plate, a first guide support, a seventh gear, a fifth rotating shaft, an eighth gear, a second toothed plate, a second guide support, a sixth rotating shaft, a ninth gear and a fifth supporting plate, wherein the third rotating shaft is rotatably mounted on the upper side of the supporting plate through the fourth supporting plate; the first toothed plate is slidably mounted on one side of the second shifting plate through a first guide support and meshed with the fixed gear; the fifth rotating shaft is rotatably arranged on one side of the second shifting plate, the seventh gear and the eighth gear are respectively and fixedly arranged at two ends of the fifth rotating shaft, and the eighth gear is positioned on the upper side of the first toothed plate and is meshed with the first toothed plate; the second toothed plate is a Z-shaped toothed plate, the second toothed plate is slidably mounted on one side of the second shifting plate through a second guide support, and one end of the second toothed plate is positioned on the upper side of the seventh gear and meshed with the seventh gear; the sixth rotating shaft is rotatably arranged on one side of the second shifting plate through a fifth supporting plate, the ninth gear is fixedly arranged at one end of the sixth rotating shaft, and the ninth gear is positioned at the other end of the second gear plate and is positioned at the lower side of the ninth gear to be meshed with the ninth gear; one end of the first shifting plate is hinged to the other end of the second shifting plate through a sixth rotating shaft; the second shifting plate is matched with the elastic bed plate, and the other end of the first shifting plate penetrates through a driving sliding groove formed in the transmission block on the corresponding side.

The third rotating shaft of the four adjusting mechanisms is in transmission connection through a gear; the second motor is supported and arranged on the support plate through the second motor; and the third rotating shaft positioned on the front side is in transmission connection with an output shaft of the second motor through a gear.

As a further improvement of the technology, the upper end of the bracket is provided with three evenly distributed slideways, and each slideway is provided with a T-shaped chute; the even fixed mounting of lower extreme of extension board has three U template, and the lower extreme of three U template all has the cambered surface, and the lower extreme of three U template is fixed mounting respectively has a T type slider, and the extension board is installed at the upside of support through the sliding fit of three T type slider and three T type spout, and the cambered surface and the cooperation of three slide cambered surface of three U template lower extreme.

The first motor is fixedly arranged on the bracket through the first motor support.

As a further improvement of the present technology, one end of each of two third rotating shafts of the two adjusting mechanisms located at two sides among the four adjusting mechanisms is fixedly provided with a sixth gear; one end of each of the two third rotating shafts in the two middle adjusting mechanisms is fixedly provided with a tenth gear; the other ends of two third rotating shafts in the two middle adjusting mechanisms are fixedly connected with each other through a first rotating shaft, and the first rotating shaft is arranged on the upper side of the support plate through a first support plate; a third gear is fixedly arranged at the other end of the third rotating shaft in the front side adjusting mechanism; and a fourth gear is fixedly mounted on an output shaft of the second motor and is meshed with the third gear.

Between the two adjusting mechanisms located on the same side, the second rotating shaft is rotatably installed on the upper side of the supporting plate through the second supporting plate, the second gear and the fifth gear are fixedly installed at two ends of the second rotating shaft respectively, the second gear is meshed with the tenth gear on the same side, and the fifth gear is meshed with the sixth gear on the same side.

As a further improvement of the technology, two limiting clamping grooves are symmetrically formed in two sides of one end of the elastic bed board; two guardrails are respectively installed on two sides of the elastic bed board in a swinging mode, an installation sliding groove is formed in each guardrail, and a circular sliding groove is formed in one side of each installation sliding groove.

A limiting fixture block is respectively and slidably mounted in the mounting chute formed in each guardrail, one end of each limiting fixture block is provided with an inclined plane, and a first spring is mounted between the other end of each limiting fixture block, which extends out of the mounting chute, and the inner end surface of the mounting chute; one end of each limiting clamping block, which extends into the mounting groove, is fixedly provided with a pull rod respectively, and one end of each pull rod, which is far away from the limiting clamping block, penetrates out of a circular sliding groove formed in the corresponding guardrail and is positioned outside the guardrail; one end of the limiting clamping block with an inclined plane is matched with a limiting clamping groove formed in the corresponding side of the elastic bed plate; after the rail-swinging limiting clamping block is matched with the limiting clamping groove on the guardrail, the limiting clamping block limits the lower swing of the guardrail.

As a further improvement of the technology, one end of the guardrail close to the elastic bed board is provided with a gap area.

As a further improvement of the technology, four pressing mechanisms are arranged at four corners of the lower side of the elastic bed board; one side of each of the four transmission blocks is provided with a shaft hole.

The quilt pressing mechanism comprises a worm, a worm wheel, a pressing plate, a connecting rod, a rocker, a third supporting plate and a fourth rotating shaft, wherein one end of the fourth rotating shaft is rotatably arranged in a shaft hole formed in the transmission block on one corresponding side, the worm wheel is fixedly arranged on the fourth rotating shaft, the pressing plate is fixedly arranged on the fourth rotating shaft through the connecting rod, and the pressing plate is matched with the bottom surface of the elastic bed board; the worm is rotatably arranged on the side edge of the transmission block on the corresponding side through the two third supporting plates, and the worm is meshed with the worm wheel; one end of the worm is fixedly provided with a rocker.

As a further improvement of the technology, the upper and lower parts of the two ends of the driving sliding chute formed on the transmission block are provided with cambered surfaces.

Compared with the traditional bed technology, the beneficial effects of the invention design are as follows:

1. when the nursing bed is used, the first motor works to control the first gear to intermittently and reciprocally rotate, the first gear rotates to drive the rack to reciprocally swing, the rack swings to drive the support plate to reciprocally slide along the slide way on the support through the U-shaped plate, the support plate slides to drive the elastic bed plate to reciprocally swing at intervals, for example, the elastic bed plate swings once every 1 hour, so that a nursed person is ensured not to passively turn over once every hour, and the nursed person can be prevented from lying on the bed in the same posture for a long time to cause pressure sores.

2. In the process that the second shifting plate swings to shift the elastic bed board, the first shifting plate can swing by a certain angle relative to the second shifting plate while being driven to swing; the reason of design like this is when the second is dialled the board and is dialled elasticity bed board middle zone and to middle crooked, and first group board is dialled the middle zone that the limit region was dialled relatively by the second and is dialled the board and is crooked a small angle once more in the elasticity bed board, guarantees that the elasticity bed board is dialled the board of bending into approximate circular form, improves by caregiver's comfort level.

3. According to the invention, the two guardrails are arranged on the two sides of the elastic mounting plate, and after a nursed person lies on the bed, the two guardrails are erected, so that the two guardrails can protect the nursed person and prevent the nursed person from falling underground. When a nursed person is lifted to the bed, the two pull rods on the two sides are manually pulled, so that the two limiting clamping blocks are retracted into the corresponding mounting chutes, the limiting of the limiting clamping blocks on the two guardrails is relieved, and then the two guardrails are lifted down under the action of the gravity of the two guardrails, so that the influence of the guardrails on the lifting of the nursed person to the bed is prevented.

4. The four quilt pressing mechanisms are arranged on the lower side of the elastic bed board, and the mattress paved on the elastic bed board is pressed through the four quilt pressing mechanisms.

5. The elastic bed board has three states, namely a downward bending state, an upward bending state and a straight state; the downward bending state is convenient for placing the nursed person, the upward bending state is convenient for turning over the nursed person, and the straight state can be used as a normal bed.

Drawings

Fig. 1 is an external view of an entire part.

Fig. 2 is a schematic view of the overall component distribution.

FIG. 3 is a schematic illustration of the plate mounting.

FIG. 4 is a schematic view of a plate and bracket configuration.

Fig. 5 is a schematic view of the installation of the elastic bed board and the guardrail.

Fig. 6 is a schematic view of the guard rail structure.

Fig. 7 is a schematic view of the adjustment mechanism distribution.

Fig. 8 is a schematic view of the adjustment mechanism drive.

Fig. 9 is a schematic view of the installation of the press mechanism, cross member and adjustment mechanism.

Fig. 10 is a schematic view of the press-on mechanism installation.

Fig. 11 is a schematic view of the structure of the pressing mechanism and the cross beam.

Fig. 12 is a schematic view of the adjustment mechanism.

Fig. 13 is a schematic view of the operating principle of the adjusting mechanism.

Fig. 14 is a schematic view of the working principle of the elastic bed board.

Number designation in the figures: 1. an elastic bed board; 2. a guardrail; 3. a support; 4. a support plate; 5. an adjustment mechanism; 6. a rack; 7. a first gear; 8. a first motor; 9. a first motor support; 10. a slideway; 11. a T-shaped chute; 12. a T-shaped slider; 13. a U-shaped plate; 14. a cross beam; 15. a transmission block; 16. a limiting clamping groove; 17. a notched area; 18. installing a chute; 19. a circular chute; 20. a limiting clamping block; 21. a pull rod; 22. a first spring; 23. a bevel; 24. a first support plate; 25. a first rotating shaft; 26. a second motor; 27. a tenth gear; 28. a second gear; 29. a second rotating shaft; 30. a second support plate; 31. fixing a gear; 32. a third gear; 33. a fourth gear; 34. a fixing plate; 35. a fifth gear; 36. a sixth gear; 37. a third rotating shaft; 38. a second motor support; 39. a quilt pressing mechanism; 40. a worm; 41. a worm gear; 42. pressing a plate; 43. a connecting rod; 44. a rocker; 45. a third support plate; 46. a fourth rotating shaft; 47. a drive chute; 48. a cambered surface; 49. a shaft hole; 50. a first dial plate; 51. a second dial plate; 52. a fourth support plate; 53. a first toothed plate; 54. a first guide support; 55. a seventh gear; 56. a fifth rotating shaft; 57. an eighth gear; 58. a second toothed plate; 59. a second guide support; 60. a sixth rotating shaft; 61. a ninth gear; 62. and a fifth support plate.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 and 2, the bed comprises an elastic bed board 1, a guardrail 2, a bracket 3, a support plate 4 and an adjusting mechanism 5, wherein an arc-shaped rack 6 is fixedly arranged at the front end of the support plate 4 as shown in fig. 3; a first motor 8 is fixedly arranged on the bracket 3, and a first gear 7 is fixedly arranged on an output shaft of the first motor 8; the support plate 4 is arranged on the upper side of the bracket 3 in a left-right arc-shaped swinging manner, and the first gear 7 is meshed with the rack 6; as shown in fig. 1 and 7, four adjusting mechanisms 5 are symmetrically installed on the upper side of the support plate 4, and two adjusting mechanisms 5 located on the same side in the four adjusting mechanisms 5 are distributed in a front-back staggered manner; as shown in fig. 5, two beams 14 are installed on two sides of the bottom panel of the elastic bed board 1, two ends of each beam 14 are respectively and symmetrically installed with two driving blocks 15, as shown in fig. 11, driving sliding grooves 47 are formed on the driving blocks 15; as shown in fig. 1 and 2, the elastic bed plate 1 is mounted on the upper side of four adjusting mechanisms 5.

The cross beam 14 designed by the invention can increase the strength of the elastic bed board 1; the elastic bed board 1 has the elastic function of passive deformation under the condition of ensuring the hardness.

As shown in fig. 12, the adjusting mechanism 5 includes a first shifting plate 50, a second shifting plate 51, a fourth supporting plate 52, a first toothed plate 53, a first guiding support 54, a seventh gear 55, a fifth rotating shaft 56, an eighth gear 57, a second toothed plate 58, a second guiding support 59, a sixth rotating shaft 60, a ninth gear 61, and a fifth supporting plate 62, wherein as shown in fig. 7 and 12, the third rotating shaft 37 is rotatably mounted on the upper side of the supporting plate 4 through the fourth supporting plate 52, one end of the second shifting plate 51 is fixedly mounted on the third rotating shaft 37, the fixed gear 31 is fixedly mounted on the upper side of the supporting plate 4 through the fixing plate 34, and the third rotating shaft 37 passes through the fixed gear 31 and is rotatably matched with the fixed gear 31; the first toothed plate 53 is slidably mounted on one side of the second shifting plate 51 through a first guide support 54, and the first toothed plate 53 is meshed with the fixed gear 31; the fifth rotating shaft 56 is rotatably installed at one side of the second shifting plate 51, the seventh gear 55 and the eighth gear 57 are respectively and fixedly installed at two ends of the fifth rotating shaft 56, and the eighth gear 57 is located at the upper side of the first toothed plate 53 and meshed with the first toothed plate 53; the second toothed plate 58 is a Z-shaped toothed plate, the second toothed plate 58 is slidably mounted on one side of the second shifting plate 51 through a second guide support 59, and one end of the second toothed plate 58 is located on the upper side of the seventh gear 55 and is meshed with the seventh gear 55; the sixth rotating shaft 60 is rotatably mounted on one side of the second dial plate 51 through a fifth support plate 62, the ninth gear 61 is fixedly mounted on one end of the sixth rotating shaft 60, and the other end of the ninth gear 61, which is located on the second gear plate 58, is located below the ninth gear 61 and is meshed with the ninth gear 61; one end of the first shifting plate 50 is hinged to the other end of the second shifting plate 51 through a sixth rotating shaft 60; the second shifting plate 51 is engaged with the elastic bed board 1, and as shown in fig. 9, the other end of the first shifting plate 50 passes through the driving sliding slot 47 opened on the corresponding side transmission block 15.

In the process of swinging the second shifting plate 51, the first shifting plate 50 can swing a certain angle relative to the second shifting plate 51 while being driven to swing; the reason for designing like this is when the second is dialled board 51 and is dialled the regional middle bending to the centre in elasticity bed board 1, and first is dialled board 50 and is dialled the middle region that the limit region is dialled relatively by the second and dial the board 51 and dial the elasticity bed board 1 and lean on the regional small angle of bending once more, guarantees that elasticity bed board 1 is dialled the board of bending into approximate circular form, improves by nurse's comfort level and by the flip effect.

As shown in fig. 7 and 8, the third rotating shafts 37 of the four adjusting mechanisms 5 are in gear transmission connection; the second motor 26 is arranged on the support plate 4 through a second motor support 38; the third shaft 37 on the front side is in geared connection with the output shaft of the second electric motor 26.

As shown in fig. 4, the upper end of the bracket 3 is provided with three evenly distributed slideways 10, and each slideway 10 is provided with a T-shaped chute 11; the even fixed mounting of lower extreme of extension board 4 has three U template 13, and the lower extreme of three U template 13 all has cambered surface 48, and the lower extreme of three U template 13 is fixed mounting respectively has a T type slider 12, and as shown in fig. 3, extension board 4 installs the upside at support 3 through the sliding fit of three T type sliders 12 and three T type spout 11, and cambered surface 48 and the cooperation of three slide 10 cambered surface 48 of the lower extreme of three U template 13. The three T-shaped sliding blocks 12 are in sliding fit with the three T-shaped sliding grooves 11 to play a role in guiding the standing.

As shown in fig. 3, the first motor 8 is fixedly mounted on the bracket 3 through a first motor support 9.

As shown in fig. 8, one end of each of two third rotating shafts 37 of two adjusting mechanisms 5 located at two sides among the four adjusting mechanisms 5 is fixedly provided with a sixth gear 36; one end of each of the two third rotating shafts 37 in the two middle adjusting mechanisms 5 is fixedly provided with a tenth gear 27; the other ends of two third rotating shafts 37 in the two middle adjusting mechanisms 5 are fixedly connected with each other through a first rotating shaft 25, and the first rotating shaft 25 is arranged on the upper side of the support plate 4 through a first support plate 24; the other end of the third rotating shaft 37 in the front-side adjusting mechanism 5 is fixedly provided with a third gear 32; a fourth gear 33 is fixedly mounted on the output shaft of the second motor 26, and the fourth gear 33 is engaged with the third gear 32.

As shown in fig. 8, between the two adjusting mechanisms 5 located on the same side, the second rotating shaft 29 is rotatably mounted on the upper side of the supporting plate 4 through the second supporting plate 30, the second gear 28 and the fifth gear 35 are respectively fixedly mounted at two ends of the second rotating shaft 29, the second gear 28 is meshed with the tenth gear 27 on the same side, and the fifth gear 35 is meshed with the sixth gear 36 on the same side.

As shown in fig. 5, two limiting clamping grooves 16 are symmetrically formed on two sides of one end of the elastic bed board 1; as shown in fig. 2, the two guard rails 2 are respectively installed on two sides of the elastic bed board 1 in a swinging manner, as shown in fig. 6, the two guard rails 2 are respectively provided with an installation sliding groove 18, and one side of each of the two installation sliding grooves 18 is provided with a circular sliding groove 19.

As shown in fig. 5 and 6, a limiting fixture block 20 is slidably mounted in the mounting chute 18 formed in each guardrail 2, one end of the limiting fixture block 20 has an inclined surface 23, and a first spring 22 is mounted between the other end of the limiting fixture block 20 extending out of the mounting chute 18 and the inner end surface of the mounting chute 18; one end of each limiting fixture block 20 extending into the installation groove is fixedly provided with a pull rod 21, and one end of each pull rod 21 far away from the limiting fixture block 20 penetrates out of a corresponding circular sliding groove 19 formed in the guardrail 2 and is positioned on the outer side of the guardrail 2; one end of the limiting fixture block 20 with an inclined surface 23 is matched with a limiting clamping groove 16 formed on the corresponding side of the elastic bed board 1; after the rail swinging limiting fixture block 20 on the guardrail 2 is matched with the limiting fixture groove 16, the limiting fixture block 20 limits the downward swinging of the guardrail 2.

According to the invention, the two guardrails 2 are arranged on the two sides of the elastic mounting plate, and after a nursed person lies on the bed, the two guardrails 2 are erected, so that the two guardrails 2 can protect the nursed person and prevent the nursed person from falling underground. In the process that the two guardrails 2 are erected, after the elastic bed board 1 is contacted with the inclined planes 23 on the limiting blocks, the corresponding limiting fixture blocks 20 are extruded through the inclined planes 23, so that the limiting fixture blocks 20 retract into the corresponding mounting chutes 18, and when one ends, provided with the inclined planes 23, of the limiting fixture blocks 20 mounted on the guardrails 2 are matched with the limiting clamping grooves 16 formed in the corresponding side of the elastic bed board 1; after the rail swinging limiting fixture block 20 on the guardrail 2 is matched with the limiting fixture groove 16, the limiting fixture block 20 limits the downward swinging of the guardrail 2. When a nursed person is lifted to the bed, the two pull rods 21 on the two sides are manually pulled, so that the two limiting clamping blocks 20 retract into the corresponding mounting chutes 18, the limiting of the two guardrails 2 by the limiting clamping blocks 20 is released, and then the two guardrails 2 are swung down under the action of the gravity of the two guardrails 2, so that the nursed person is prevented from being lifted to the bed by the guardrails 2.

As shown in fig. 6, the guardrail 2 has a gap area 17 at one end adjacent to the elastic bed board 1. The function of the cut-out region 17 is to enable a mattress laid on the elastic bed plate 1 to be bent down from the cut-out region 17 to the underside of the elastic bed plate 1 and then pressed by the press-on mechanism 39. In order to prevent the mattress from being pulled due to the deformation of the elastic bed board 1, when the mattress is prevented, the elastic bed board 1 is firstly controlled to bend downwards, the mattress is laid under the state that the elastic bed board 1 bends downwards, and even if the elastic bed board 1 is laid flat or bent upwards, the mattress is only wrinkled and cannot be pulled, so that the swinging of the elastic bed board 1 is influenced.

As shown in fig. 10, four pressure-receiving mechanisms 39 are mounted at four corners of the lower side of the elastic bed plate 1; one side of each of the four driving blocks 15 is provided with a shaft hole 49.

As shown in fig. 10 and 11, the pressure-driven mechanism 39 includes a worm 40, a worm wheel 41, a pressure plate 42, a connecting rod 43, a rocker 44, a third supporting plate 45, and a fourth rotating shaft 46, wherein one end of the fourth rotating shaft 46 is rotatably installed in a shaft hole 49 opened on the corresponding side transmission block 15, the worm wheel 41 is fixedly installed on the fourth rotating shaft 46, the pressure plate 42 is fixedly installed on the fourth rotating shaft 46 through the connecting rod 43, and the pressure plate 42 is engaged with the bottom surface of the elastic bed board 1; the worm 40 is rotatably arranged on the side edge of the transmission block 15 on the corresponding side through two third support plates 45, and the worm 40 is meshed with the worm wheel 41; a rocker 44 is fixedly mounted to one end of the worm 40.

When the mattress is pressed, the rocker 44 manually rotates the worm 40, the worm 40 rotates to drive the worm wheel 41 to rotate, the worm wheel 41 rotates to drive the fourth rotating shaft 46 to rotate, and the fourth rotating shaft 46 rotates to drive the pressing plate 42 to swing through the connecting rod 43, so that the mattress is pressed.

As shown in fig. 11, the driving slide 47 formed on the driving block 15 has an upper and a lower curved surfaces 48. According to the invention, a gap is formed between the second shifting plate 51 and the driving sliding groove 47 formed in the corresponding transmission block 15, so that when the second shifting plate 51 swings to drive the transmission block 15 to swing, the second shifting plate 51 is prevented from sliding relative to the transmission block 15 to be blocked to influence the second shifting plate 51 to shift the transmission block 15. The design of the cambered surface 48 also prevents the second shifting plate 51 from being blocked from sliding relative to the transmission block 15.

The specific working process is as follows: when the bed designed by the invention is used, as shown in b in fig. 13, before the nursing person is lifted to the bed, the second motor 26 is controlled to work, for the structure close to one side of the second motor 26, the second motor 26 works to drive the fourth gear 33 to rotate, the fourth gear 33 rotates to drive the third gear 32 engaged with the fourth gear to rotate, the third gear 32 rotates to drive the corresponding third rotating shaft 37 to rotate, the third rotating shaft 37 rotates to drive the corresponding sixth gear 36 to rotate, the sixth gear 36 rotates to drive the corresponding fifth gear 35 to rotate, the fifth gear 35 rotates to drive the corresponding second rotating shaft 29 to rotate, the second rotating shaft 29 rotates to drive the corresponding second gear 28 to rotate, the second gear 28 rotates to drive the tenth gear 27 to rotate, the tenth gear 27 rotates to drive the third rotation in the middle adjusting mechanism 5, the third rotating shaft 37 of the middle adjusting mechanism 5 rotates to drive the first rotating shaft 25 to rotate, the first rotating shaft 25 rotates to drive the third rotating shaft 37 of the other side of the middle adjusting mechanism 5 to rotate, and then the sixth gear 36, the fifth gear 35, the second rotating shaft 29 and the tenth gear 27 of the other side of the middle adjusting mechanism 5 drive the third rotating shaft 37 of the two adjusting mechanisms 5 of the other side of the middle adjusting mechanism to rotate; when the third rotating shaft 37 is driven to rotate, the third rotating shaft 37 drives the second shifting plate 51 to swing around the axis of the third rotating shaft 37, the second shifting plate 51 swings to drive the first toothed plate 53 mounted through the first guide support 54 to swing around the axis of the third rotating shaft 37, because the fixed gear 31 is fixedly mounted on the support plate 4 by the fixed plate 34 and is in a static state, when the first toothed plate 53 swings around the third rotating shaft 37, the first toothed plate 53 is driven to slide by the fixed gear 31 under the action of the meshing teeth of the first toothed plate 53 and the fixed gear 31, the first toothed plate 53 slides to drive the eighth gear 57 rotatably mounted on the second shifting plate 51 to rotate, the eighth gear 57 rotates to drive the fifth rotating shaft 56 to rotate, the fifth rotating shaft 56 rotates to drive the seventh gear 55 to rotate, the seventh gear 55 rotatably drives the second toothed plate 58 mounted on the second shifting plate 51 through the second guide support 59 to slide, the second toothed plate 58 drives a ninth gear 61 engaged with the second toothed plate to rotate in a sliding manner, the ninth gear 61 drives a sixth rotating shaft 60 hinged with the second shifting plate 51 and the first shifting plate 50 to rotate, the sixth rotating shaft 60 drives the first shifting plate 50 to swing relative to the second shifting plate 51 in a rotating manner, namely, in the swinging process of the second shifting plate 51, the first shifting plate 50 swings at a certain angle relative to the second shifting plate 51 while being driven to swing; as shown in fig. 13 c, the elastic deck 1 is bent downward.

After the elastic bed board 1 is driven to bend downwards, a mattress is laid on the upper side of the elastic bed, the two sides of the mattress are bent to the bottom surface of the elastic bed board 1 through the notch areas 17 on the guardrails 2, and then the mattress on the lower side of the elastic bed board 1 is pressed through the four pressing mechanisms 39.

After the mattress is laid, the two pull rods 21 on the two sides are manually pulled to enable the two limiting fixture blocks 20 to retract into the corresponding mounting chutes 18, the limiting of the limiting fixture blocks 20 on the two guardrails 2 is relieved, and then the two guardrails 2 are laid down under the action of the gravity of the two guardrails 2; after the two guardrails 2 are swung downwards, the nursed person is lifted to the upper side of the elastic bed board 1.

After the cared person is lifted to the upper side of the elastic bed board 1, the second motor 26 is controlled to operate, as shown by a in fig. 13, so that the elastic bed board 1 is bent upward.

As shown in fig. 14, a time interval of the first motor 8 is then set, so that the first motor 8 works, the first motor 8 works to control the first gear 7 to intermittently rotate in a reciprocating manner, the first gear 7 rotates to drive the rack 6 to swing in a reciprocating manner, the rack 6 swings to drive the support plate 4 to slide in a reciprocating manner along the slide way 10 on the bracket 3 through the U-shaped plate 13, and the support plate 4 slides to drive the elastic bed plate 1 to swing in a reciprocating manner at intervals, for example, once every 1 hour, so that a cared person can be ensured not to passively turn over once every one hour, and the cared person can be prevented from lying on the bed in the same posture for a long time to cause pressure sores.

Claims

1. A bed for preventing pressure sores, characterized in that: the bed comprises an elastic bed board, a guardrail, a bracket, a support plate and an adjusting mechanism, wherein an arc-shaped rack is fixedly arranged at the front end of the support plate; a first motor is fixedly arranged on the bracket, and a first gear is fixedly arranged on an output shaft of the first motor; the support plate is arranged on the upper side of the support in a left-right arc-shaped swinging manner, and the first gear is meshed with the rack; four adjusting mechanisms are symmetrically arranged on the upper side of the support plate in the left-right direction, and two adjusting mechanisms on the same side of the four adjusting mechanisms are distributed in a front-back staggered manner; two beams are arranged on two sides of the bottom panel of the elastic bed board, two ends of each beam are respectively and symmetrically provided with two transmission blocks, and driving chutes are formed in the transmission blocks; the elastic bed board is arranged at the upper sides of the four adjusting mechanisms;

the adjusting mechanism comprises a first shifting plate, a second shifting plate, a fourth supporting plate, a first toothed plate, a first guide support, a seventh gear, a fifth rotating shaft, an eighth gear, a second toothed plate, a second guide support, a sixth rotating shaft, a ninth gear and a fifth supporting plate, wherein the third rotating shaft is rotatably mounted on the upper side of the supporting plate through the fourth supporting plate; the first toothed plate is slidably mounted on one side of the second shifting plate through a first guide support and meshed with the fixed gear; the fifth rotating shaft is rotatably arranged on one side of the second shifting plate, the seventh gear and the eighth gear are respectively and fixedly arranged at two ends of the fifth rotating shaft, and the eighth gear is positioned on the upper side of the first toothed plate and is meshed with the first toothed plate; the second toothed plate is a Z-shaped toothed plate, the second toothed plate is slidably mounted on one side of the second shifting plate through a second guide support, and one end of the second toothed plate is positioned on the upper side of the seventh gear and meshed with the seventh gear; the sixth rotating shaft is rotatably arranged on one side of the second shifting plate through a fifth supporting plate, the ninth gear is fixedly arranged at one end of the sixth rotating shaft, the ninth gear is positioned at the other end of the second gear plate, and the other end of the second gear plate is positioned at the lower side of the ninth gear and meshed with the ninth gear; one end of the first shifting plate is hinged to the other end of the second shifting plate through a sixth rotating shaft; the second shifting plate is matched with the elastic bed plate, and the other end of the first shifting plate penetrates through a driving chute formed in the transmission block on the corresponding side;

the third rotating shaft of the four adjusting mechanisms is in transmission connection through a gear; the second motor is supported and arranged on the support plate through the second motor; the third rotating shaft positioned on the front side is in transmission connection with an output shaft of the second motor through a gear;

in the swinging process of the second shifting plate, the first shifting plate can swing a certain angle relative to the second shifting plate while being driven to swing; when the second shifting plate shifts the middle area of the elastic bed board to bend, the side area of the elastic bed board shifted by the first shifting plate bends a small angle relative to the middle area shifted by the second shifting plate again; the elastic bed board is pulled and bent into a board similar to a round shape;

two limiting clamping grooves are symmetrically formed in two sides of one end of the elastic bed plate; the two guardrails are respectively installed on two sides of the elastic bed board in a swinging mode, an installation sliding groove is formed in each guardrail, and a circular sliding groove is formed in each side of each installation sliding groove; a limiting fixture block is respectively and slidably mounted in the mounting chute formed in each guardrail, one end of each limiting fixture block is provided with an inclined plane, and a first spring is mounted between the other end of each limiting fixture block, which extends out of the mounting chute, and the inner end surface of the mounting chute; one end of each limiting clamping block extending into the mounting groove is fixedly provided with a pull rod, and one end of each pull rod, which is far away from the limiting clamping block, penetrates out of a circular sliding groove formed in the corresponding guardrail and is positioned on the outer side of the guardrail; one end of the limiting clamping block with an inclined plane is matched with a limiting clamping groove formed in the corresponding side of the elastic bed plate; after the rail-swinging limiting fixture block on the guardrail is matched with the limiting clamp groove, the limiting fixture block limits the lower swing of the guardrail;

one end of the guardrail close to the elastic bed board is provided with a gap area;

four quilt pressing mechanisms are arranged at four corners of the lower side of the elastic bed board; one side of each of the four transmission blocks is provided with a shaft hole; the quilt pressing mechanism comprises a worm, a worm wheel, a pressing plate, a connecting rod, a rocker, a third supporting plate and a fourth rotating shaft, wherein one end of the fourth rotating shaft is rotatably arranged in a shaft hole formed in the transmission block on one corresponding side, the worm wheel is fixedly arranged on the fourth rotating shaft, the pressing plate is fixedly arranged on the fourth rotating shaft through the connecting rod, and the pressing plate is matched with the bottom surface of the elastic bed board; the worm is rotatably arranged on the side edge of the transmission block on the corresponding side through the two third supporting plates, and the worm is meshed with the worm wheel; one end of the worm is fixedly provided with a rocker.

2. A pressure sore prevention bed as claimed in claim 1, wherein: the upper end of the bracket is provided with three evenly distributed slideways, and each slideway is provided with a T-shaped chute; the lower end of the support plate is uniformly and fixedly provided with three U-shaped plates, the lower ends of the three U-shaped plates are provided with cambered surfaces, the lower ends of the three U-shaped plates are respectively and fixedly provided with a T-shaped sliding block, the support plate is arranged on the upper side of the support through the sliding fit of the three T-shaped sliding blocks and the three T-shaped sliding grooves, and the cambered surfaces at the lower ends of the three U-shaped plates are matched with the three slideway cambered surfaces;

3. A pressure sore prevention bed as claimed in claim 1, wherein: one end of each of two third rotating shafts in the two adjusting mechanisms positioned on the two sides of the four adjusting mechanisms is fixedly provided with a sixth gear; one end of each of the two third rotating shafts in the two middle adjusting mechanisms is fixedly provided with a tenth gear; the other ends of two third rotating shafts in the two middle adjusting mechanisms are fixedly connected with each other through a first rotating shaft, and the first rotating shaft is arranged on the upper side of the support plate through a first support plate; a third gear is fixedly arranged at the other end of the third rotating shaft in the front side adjusting mechanism; a fourth gear is fixedly arranged on an output shaft of the second motor and is meshed with the third gear;

4. A pressure sore prevention bed as claimed in claim 1, wherein: the upper and lower parts of the two ends of the driving sliding groove formed on the transmission block are provided with cambered surfaces.