CN108652315B

CN108652315B - Headrest height adjusting mechanism

Info

Publication number: CN108652315B
Application number: CN201810417107.4A
Authority: CN
Inventors: 胡转香
Original assignee: Anhui Qilushi Engineering Technology Development Co ltd
Current assignee: Anhui Qilushi Engineering Technology Development Co ltd
Priority date: 2018-05-04
Filing date: 2018-05-04
Publication date: 2020-04-21
Anticipated expiration: 2038-05-04
Also published as: CN108652315A

Abstract

The invention relates to a headrest height adjusting mechanism, which comprises a supporting plate, wherein a headrest is arranged on the upper plate surface of the supporting plate, an air-permeable groove is arranged on the headrest and is concentric with an air vent on the supporting plate, a supporting plate is arranged below the supporting plate, the lower end of the supporting plate and the lower plate surface of the supporting plate form a palm and arm accommodating space, a height adjusting mechanism is arranged between the upper plate surface of the supporting plate and the lower plate surface of the supporting plate and is used for adjusting the distance between the supporting plate and the supporting plate, when a user actually uses the headrest, the head of the user is rested on the headrest of the supporting plate, and nostrils and mouths of the face are exposed in the air-permeable groove, so that local air pollution caused by breathing is avoided, the height of the supporting plate can be adjusted, and the adjustment of the sleeping posture of the user when the user lies prone is realized, therefore, the headrest height adjusting mechanism is arranged on the lying prone sleeping device, so as to adjust the height to the comfortable height of the user and adapt to the sleeping posture requirements of different users.

Description

Headrest height adjusting mechanism

Technical Field

The invention relates to the technical field of articles for daily use, in particular to a headrest height adjusting mechanism.

Background

The groveling is the simplest rest mode for many students and office workers to rest, and the groveling does not occupy rest space and can relieve fatigue to a great extent; however, actually lie prone when sleeping, be subject to the problem of the appearance of sleeping, generally all sit on the chair, and both arms are laid down on the desktop, the head is rested on the both arms that crouch, it is not smooth to cause arm position blood circulation so very easily, lead to the arm to numb, and the head is rested on the arm, it is dirty to cause respiratory local air very easily, more very serious person, lead to breathing not smooth, in the experience in-process of actually lying prone to sleep, because the problem of the appearance of sleeping, lead to the lumbar vertebrae to be in the protruding gesture of bending all the time, cause waist and lumbar vertebrae ache very easily, consequently lie prone sleep's sleep quality is difficult to guarantee, and be very unfavorable to healthy for a long time.

Disclosure of Invention

The purpose of the invention is: the utility model provides a headrest height adjusting mechanism can effectively improve the comfort level of sleeping of lying prone, reduces to lie prone and sleep the influence to sleep quality and healthy production.

In order to achieve the purpose, the invention adopts the technical scheme that:

the headrest height adjusting mechanism comprises a supporting plate, wherein a headrest is arranged on the upper plate surface of the supporting plate, a ventilation groove is formed in the headrest and shares the same core with a ventilation hole in the supporting plate, a supporting plate is arranged below the supporting plate, the lower end of the supporting plate and the lower plate surface of the supporting plate form an accommodating space for a palm and an arm, a height adjusting mechanism is arranged between the upper plate surface of the supporting plate and the lower plate surface of the supporting plate, and the height adjusting mechanism is used for adjusting the distance between the supporting plate and the supporting plate.

The invention also has the following features:

the height adjusting mechanism comprises a connecting rod unit arranged between an upper plate surface of the supporting plate and a lower plate surface of the supporting plate, the connecting rod unit comprises two first connecting rods which are hinged to the lower plate surface of the supporting plate, the rod ends of the two first connecting rods are respectively hinged to a second connecting rod, the rod ends of the second connecting rods are respectively hinged to the supporting plate, the two first connecting rods and the second connecting rods form a diamond structure, rod end hinged shafts of the two first connecting rods and the second connecting rods are horizontally arranged, the length direction of the rod end hinged shafts of the two first connecting rods and the length direction of the rod end hinged shafts of the second connecting rods are perpendicular to the length direction of the supporting plate, and hinged connecting ends of the two.

The height adjusting and locking unit comprises a sliding block arranged on the lower plate surface of the supporting plate, the length direction of the sliding block is parallel to the length direction of the supporting plate, a strip-shaped sliding hole is arranged on the sliding block, the cross section of the strip-shaped sliding hole is rectangular, the strip-shaped sliding hole is arranged along the length direction of the sliding block, a strip-shaped opening is arranged on the lower plate surface of the sliding block, an adjusting sliding block is arranged in the strip-shaped sliding hole, the cross section of the adjusting sliding block is I-shaped, a first wing plate on one side of the adjusting sliding block is positioned in the strip-shaped sliding hole, a web plate of the adjusting sliding block protrudes out of the strip-shaped opening, the outer plate surface of a second wing plate on the other side of the adjusting sliding block is hinged with one end of a supporting connecting rod, the other end of the supporting connecting rod is in damping hinge joint with the hinge joint ends of the first connecting rod and the second connecting rod, and a second tooth surface is arranged on the opposite surface of the second wing plate on the other side of the adjusting slide block and the lower plate surface of the slide block, a distance is arranged between the first wing plate on one side of the adjusting slide block and the hole wall of the strip-shaped slide hole where the strip-shaped slide hole is located, and the first tooth surface is meshed with or separated from the second tooth surface.

The supporting plates are arranged below the supporting plates in two groups, the length directions of the supporting plates are parallel to the length directions of the supporting plates, the connecting rod units are arranged between the supporting plates and the supporting plates at intervals, and the height adjusting and locking units are connected with the connecting rod units on two sides of the supporting plates.

Compared with the prior art, the invention has the technical effects that: during the user's in-service use, rest the head on the headrest of layer board to make facial nostril and mouth show in ventilative recess, thereby avoid because the local air that the breathing caused is dirty, and the height-adjustable of foretell layer board, thereby can realize the adjustment to the user gesture of sleeping of lying prone, consequently the device of sleeping of lying prone sets up the high adjustment mechanism of headrest, can conveniently realize the adjustment to different users ' headrest height, with the height of adjusting to user comfort, the different users ' of adaptation appearance demand of sleeping.

Drawings

Fig. 1 is a schematic structural view of a sleep device;

fig. 2 is a schematic view of the structure of the lying sleeping device;

fig. 3 is a schematic view of a mounting structure of a flat tube and a supporting plate and a mounting structure between the supporting plate and a supporting plate in the groveling device;

fig. 4 is a schematic structural view of a height adjusting mechanism between a supporting plate and a supporting plate in the groveling device;

fig. 5 is a schematic view of an installation structure of a flat tube and a supporting plate in the groveling device;

fig. 6 is a schematic view of the mounting structure between the belly support soft board and the support board in the groveling device;

FIG. 7 is a schematic view of the alternate view structure of FIG. 6;

fig. 8 is a schematic view of the installation structure of the lumbar support soft plate, the connecting mechanism and the supporting plate.

Detailed Description

The invention will be further explained with reference to fig. 1 to 8:

in order that the objects and advantages of the invention will be more clearly understood, the invention will now be described in detail with reference to the following examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.

The headrest height adjusting mechanism of the present invention is described in detail below with reference to the entire prone sleeping device:

the following describes the specific features of the groveling device in detail:

the lying sleeping device comprises a supporting plate 10, wherein a headrest 20 is arranged on the upper plate surface of the supporting plate 10, a ventilation groove 21 is formed in the headrest 20 and is concentric with a ventilation hole 11 in the supporting plate 10, a supporting plate 30 is arranged below the supporting plate 10, the lower end of the supporting plate 30 and the lower plate surface of the supporting plate 10 form a palm and arm accommodating space, the height of the plate surface of the supporting plate 10 is adjustable, a lumbar supporting soft plate 40 is further arranged on the supporting plate 10, and the lumbar supporting soft plate 40 is connected with the supporting plate 10 through a connecting mechanism;

with reference to fig. 1 and 2, the prone sleeping device is placed on a platform or a desktop, and the lumbar support soft plate 40 is abutted against the lumbar of the user, the arm and the palm of the user are guided into the accommodating space between the support plate 30 and the support plate 10, and the user directly presses the head on the headrest 20, so that the mouth and the nose of the face of the user are exposed in the ventilating groove 21, thereby ensuring the normal breathing of the user and improving the breathing quality of the user;

the groove shape and size of the ventilation groove 21 of the headrest 20 should be matched with the head contour and size of a user with a general body shape, so as to ensure that the headrest 20 can effectively support the head of the user;

because the comfortable positions of the sleeping postures of each person are different, specifically, the height positions of the head pillows on the head pillows 20 are different, in order to conveniently meet the height requirements of the head pillows 20 of different users, the requirements of the different users on the height of the head pillows 20 can be met by adjusting the distance between the supporting plate 30 and the supporting plate 10;

because the joint position of the head and the headrest 20 is related to the position of the lumbar vertebra, namely when the height of the headrest 20 is raised, the position of the lumbar vertebra is also raised to a certain extent, the lumbar support soft plate 40 is connected with the supporting plate 10 through the connecting mechanism, and when the supporting plate 10 is raised, the lumbar support soft plate 40 is also raised, so that the lumbar support soft plate 40 can be ensured to be abutted against the lumbar vertebra part of a user, and the problem of lumbar pain caused by long-time bending can be remarkably reduced;

therefore, the lying sleep device can obviously improve the comfort level of the user for lying sleep and reduce the influence of lying sleep on the sleep quality and the health of the body.

As a preferred embodiment of the present invention, the supporting plate 30 is further provided with an abdomen supporting plate 50, the upper end of the abdomen supporting plate 50 is hinged to one side of the supporting plate 30, and the hinge shaft of the supporting plate 30 is horizontal and parallel to the length direction of the supporting plate 10;

the articulated belly layer board 50 that sets up of foretell backup pad 30, this belly layer board 50 can be the support that realizes user's belly, can set up soft foam-rubber cushion 502 on the belly layer board 50, thereby can improve the comfort level, this belly layer board 50 realizes the support to user, cooperation lumbar vertebrae supports soft board 40, can effectively ensure the injecing to user's abdomen, and then can inject the user appearance of sleeping of lying prone, avoid because the user's abdomen does not have the problem of the abdomen ache that appears under the circumstances of supporting, be favorable to the user to use this device of sleeping of lying prone for a long time, reduce because the long-term use pillow of lying prone causes user's health problem.

Further, lumbar support soft plates 60 are further disposed on both sides of the abdomen supporting plate 50;

foretell lumbar support soft board 60 is located the both sides of belly layer board 50 and arranges, and the user is when in actual use, and lumbar support soft board 60 can do effectual support to user's waist to further improve the comfort level that this device of sleeping of lying prone used, set up air cushion 61 on the lumbar support soft board 60.

In order to improve the stability of the supporting plate 30 for supporting the supporting plate 10, the supporting plate 30 is in a strip-shaped structure, and a height adjusting mechanism is arranged between the upper plate surface of the supporting plate 30 and the lower plate surface of the supporting plate 10 and is used for adjusting the distance between the supporting plate 10 and the supporting plate 30;

the height adjusting mechanism can effectively adjust the distance between the supporting plate 10 and the supporting plate 30 and adjust the height of the supporting plate 10 to a proper position;

above-mentioned user lies prone the in-process of sleeping at reality, and the user probably needs the adjustment to the headrest 20 high position at any time because of the high problem of headrest 20, therefore the user can adjust height adjustment mechanism at any time to the realization is to the adjustment of layer board 10 height at any time.

Further, as shown in fig. 3 and 4, the height adjusting mechanism includes a link unit disposed between the upper plate surface of the supporting plate 30 and the lower plate surface of the supporting plate 10, the link unit includes two first links 71 hinged to the lower plate surface of the supporting plate 10, the rod ends of the two first links 71 are respectively hinged to a second link 72, the rod ends of the second links 72 are respectively hinged to the supporting plate 30, the two first and

second links

71 and 72 form a diamond structure, the rod end hinge shafts of the two first and

second links

71 and 72 are both horizontally arranged and have a length direction perpendicular to the length direction of the supporting plate 10, and the hinge connection ends of the two groups of first and

second links

71 and 72 are respectively connected to the height adjusting locking unit;

the height adjusting mechanism comprises a diamond-shaped four-bar linkage mechanism consisting of two first connecting rods 71 and two second connecting rods 72, and the upper end and the lower end of the diamond-shaped four-bar linkage mechanism are respectively hinged with the lower plate surface of the supporting plate 10 and the upper plate surface of the supporting plate 30, so that the height of the hinged connection positions of the first connecting rods 71 and the second connecting rods 72 in the diamond-shaped four-bar linkage mechanism can be adjusted through the height adjusting and locking unit, the adjustment of the included angle between the first connecting rods 71 and the second connecting rods 72 can be effectively realized, the adjustment of the distance between the supporting plate 10 and the supporting plate 30 can be realized, and the requirements of users for different heights of the headrest 20 can be;

after the height of the supporting plate 30 is adjusted to a proper height, the height adjusting and locking unit is activated, so that the diamond-shaped four-bar linkage mechanism is locked to lock different height positions of the supporting plate 10.

Preferably, as shown in fig. 4, the height adjusting and locking unit includes a slider 73 disposed on the lower plate surface of the supporting plate 10, the length direction of the slider 73 is parallel to the length direction of the supporting plate 10, a bar-shaped sliding hole 731 is disposed on the slider 73, the cross section of the bar-shaped sliding hole 731 is rectangular, the bar-shaped sliding hole 731 is arranged along the length direction of the slider 73, a bar-shaped opening 732 is disposed on the lower plate surface of the slider 73, an adjusting slider 74 is disposed in the bar-shaped sliding hole 731, the cross section of the adjusting slider 74 is in an "i" shape, a first wing 741 on one side of the adjusting slider 74 is disposed in the bar-shaped sliding hole 731, a web 742 of the adjusting slider 74 protrudes out of the bar-shaped opening 732, an outer plate surface of a second wing 743 on the other side of the adjusting slider 74 is hinged to one end of a supporting link 75, and the other end of the supporting link 75 is hinged, the hinge shafts at two ends of the supporting connecting rod 75 are parallel to the hinge joints of the first connecting rod 71 and the second connecting rod 72, the lower plate surface of the slider 73 where the strip-shaped opening 732 is located is provided with a first tooth surface 733, the opposite surface of the second wing plate 743 at the other side of the adjusting slider 74 and the lower plate surface of the slider 73 is provided with a second tooth surface 744, the first wing plate 741 at one side of the adjusting slider 74 and the hole wall of the strip-shaped sliding hole 731 where the strip-shaped opening 732 is located are arranged at a distance, and the first tooth surface 733 is meshed with or separated from the second tooth surface 744;

the principle of the height adjusting and locking unit for adjusting and locking the height of the supporting plate 10 is as follows:

by manually lifting the supporting plate 10, during the lifting process of the supporting plate 10, since the first wing 741 on one side of the adjusting slider 74 and the wall of the strip-shaped sliding hole 731 where the strip-shaped opening 732 is located are spaced apart from each other, the adjusting slider 74 can slide along the strip-shaped sliding hole 731 and slide toward the lower end of the strip-shaped sliding hole 731, during the sliding process of the adjusting slider 74 toward the lower end, the included angle between the first and

second links

71, 72 in the diamond-shaped four-bar linkage mechanism is increased, so that the height of the supporting plate 10 is increased, and after the height of the supporting plate 10 is appropriate, the supporting plate 10 is lowered and the second tooth face 744 of the adjusting slider 74 at the rod end of the supporting link 75 is engaged with the first tooth face 733 provided on the lower plate face of the slider 73 where the strip-shaped opening 732 is located, so as to achieve the limit locking of one end of the supporting link 75, and achieve the limit, The positions of the hinge axes of the second connecting

rods

71 and 72 are locked, so that the supporting plate 10 is locked;

the height adjusting and locking unit is extremely high in convenience in actual use, only the supporting plate 10 needs to be lifted by hands, when the supporting plate 10 needs to be locked, only the supporting plate 10 needs to be loosened by hands, and under the action of the gravity of the supporting plate 10, a first tooth surface 733 arranged on the lower plate surface of the sliding block 73 is meshed with a second tooth surface 744 of the adjusting sliding block 74, so that locking is achieved, and the height adjusting of the supporting plate 10 is extremely convenient in actual use;

the other end of the support link 75 is in damping hinge connection with the hinge connection ends of the first and

second links

71, 72, so as to ensure the position of the adjustment slider 74 at the rod end of the support link 75, and the damping hinge connection can be realized by using a damping bushing matured in the market, so as to avoid the support link 75 from rapidly and randomly rotating under the action of self gravity, thereby ensuring that the first tooth surface 733 of the lower plate surface of the slider 73 is engaged with the second tooth surface 744 of the adjustment slider 74, so as to ensure the locking of the position of the pallet 10;

when the sleep device is not used, the head part is separated from the headrest 20 on the upper plate surface of the supporting plate 10, the supporting plate 10 is lightly touched, the supporting connecting rod 75 rotates under the action of the gravity of the supporting connecting rod, and the supporting plate 10 descends to the lowest position, so that the height of the supporting plate 10 is reset;

the two ends of the bar-shaped sliding hole 731 are limited to prevent the adjusting slider 74 from being separated from one end of the bar-shaped sliding hole 731.

Furthermore, two groups of supporting plates 30 are arranged below the supporting plate 10, the length direction of the supporting plates 30 is parallel to the length direction of the supporting plate 10, a plurality of groups of connecting rod units are arranged between the supporting plates 30 and the supporting plate 10 at intervals, and the height adjusting and locking units are connected with the connecting rod units on two sides of the supporting plate 10;

as shown in fig. 2, the plurality of link units are spaced between the supporting plate 30 and the supporting plate 10, so that the supporting firmness of the supporting plate 10 can be improved, and the height adjusting and locking unit is connected to the link units at both sides of the supporting plate 10, so that the first and

second links

71 and 72 of the plurality of link units can be regarded as a group of link units, and the arrangement of the entire height adjusting and locking unit is facilitated.

In order to store the palm and the arm of the user, a flat tube 80 for accommodating the palm is arranged between the two groups of supporting plates 30, a tube opening at one end of the flat tube 80 is large, a tube opening at the other end of the flat tube 80 is small, and a soft cushion is arranged on the inner wall of a tube cavity of the flat tube 80;

the one end mouth of pipe of foretell flat pipe 80 is big, the one end mouth of pipe is little to be arranged, and convenience of customers' palm stretches into foretell flat pipe 80 in.

As shown in fig. 1, because the hardness of the tabletop or the supporting tabletop is higher, in order to reduce the pain of the elbow of the user, the lower pipe wall of the flat pipe 80 is provided with an elbow supporting soft plate 90;

be provided with cushion 93 on foretell elbow support soft board 90, the user is lying prone the in-process of sleeping for elbow support soft board 90 places on elbow support soft board 90's cushion 93, thereby realizes the support to user's elbow, reduces the uncomfortable of the user's elbow that falls prone to sleep and cause and feels.

As shown in fig. 3 and 5, in order to accommodate the flat tube 80, an upper tube wall of the flat tube 80 is hinged to one end of a first folding connecting rod 81, the other end of the first folding connecting rod 81 is hinged to a lower plate surface of the supporting plate 10, hinge shafts at two ends of the first folding connecting rod 81 are horizontal and perpendicular to the length direction of the supporting plate 10, a first accommodating elastic plate 82 is arranged on the lower plate surface of the supporting plate 10, the first accommodating elastic plates 82 are distributed on two sides of the flat tube 80, and the first accommodating elastic plates 82 are abutted to or separated from a lower tube wall of the flat tube 80;

the flat pipe 80 is hinged with the lower plate surface of the supporting plate 10 through a first folding connecting rod 81, and when people need to lie on the stomach, the flat pipe 80 rotates around the first folding connecting rod 81 through rotating the flat pipe 80, so that the flat pipe 80 is in a proper position, and the palm of a user can conveniently extend into the flat pipe 80;

as shown in fig. 5, the first accommodating elastic plates 82 are located on two sides of the flat tubes 80, and when the device for sleeping on stomach is accommodated, the flat tubes 80 rotate around the first folding connecting rods 81, so that the flat tubes 80 are close to the lower plate surface of the supporting plate 10, and therefore the first accommodating elastic plates 82 are abutted to the lower tube walls of the flat tubes 80, and further the flat tubes 80 are fixed, the first accommodating elastic plates 82 can be made of elastic metal sheets, and when the flat tubes 80 are close to the first accommodating elastic plates 82, the first accommodating elastic plates 82 are overcome, so that the first accommodating elastic plates 82 deform, and further the first accommodating elastic plates 82 are abutted to the lower tube walls of the flat tubes 80, and thus the flat tubes 80 are fixedly accommodated.

One end of the elbow supporting soft plate 90 is hinged to one end of a second folding connecting rod 91, the other end of the second folding connecting rod 91 is hinged to a lower tube wall of the flat tube 80, hinge shafts at two ends of the second folding connecting rod 91 are horizontal and perpendicular to the length direction of the supporting plate 10, a second containing elastic plate 92 is arranged on the lower tube wall of the flat tube 80, the first containing elastic plates 92 are distributed on two sides of the elbow supporting soft plate 90, and the second containing elastic plates 92 are abutted to or separated from an upper plate surface of the elbow supporting soft plate 90;

one end of the elbow supporting soft board 90 is hinged to one end of the second folding connecting rod 91, so that the elbow supporting soft board 90 can be conveniently stored, and when the elbow supporting soft board is used, the lower board surface of the elbow supporting soft board 90 is attached to a desktop, so that the elbow can be flexibly supported; when not using, support the soft board 90 with second folding connecting rod 91 and elbow and rotate the lower tube wall position department to flat pipe 80 to realize that the accomodating of elbow support soft board 90 is fixed, reduce elbow support soft board 90's occupation space.

In practical use, the edge of the supporting plate 10 is provided with a flange 12, and the height of the lower plate surface of the supporting plate 30 is higher than or lower than the height of the end surface of the flange 12;

when the height of the supporting plate 10 is not required to be adjusted, the flange 12 is attached to a table top, so that the height of the supporting plate 10 is not required to be adjusted, and when the height of the upper plate surface of the supporting plate 10 is required to be adjusted, the height of the lower plate surface of the supporting plate 30 is lower than the height of the end surface of the flange 12, so that the supporting plate 10 is supported.

As shown in fig. 6 and 7, a connecting strip plate 51 is disposed on one side of the supporting plate 30, a longitudinal direction of the connecting strip plate 51 is parallel to a longitudinal direction of the supporting plate 30, one side of the connecting strip plate 51 is hinged to one side of the supporting plate 30, a hinge shaft of the connecting strip plate 51 is horizontal and perpendicular to the longitudinal direction of the supporting plate 30, the other side of the connecting strip plate 51 is connected to one side of an elastic plate 52, a cross section of the elastic plate 52 is arc-shaped, the longitudinal direction of the elastic plate is parallel to the longitudinal direction of the connecting strip plate 51, the other side of the elastic plate 52 is connected to one side of a connecting support plate 53, the other side of the connecting support plate 53 is hinged to an upper end of the abdomen support plate 50, and the hinge shaft of the abdomen support plate 50 is horizontal and;

an opening 531 is formed in the connecting end of the connecting support plate 53 and the abdomen supporting plate 50, a hinge claw 501 is arranged at the upper end of the abdomen supporting plate 50 and protrudes into the opening 531, a limiting strip 532 is arranged below the opening 531, and the hinge claw 501 and the limiting strip 532 abut against or are separated from each other;

a connecting strip plate 51 is arranged on one side of the supporting plate 30, the connecting strip plate 51 is connected with a connecting support plate 53 through an elastic plate 52, the other side of the connecting support plate 53 is connected with an abdomen supporting plate 50, when the prone sleeping device is in actual use, the abdomen supporting plate 50 is connected with the elastic plate 52, and under the action of elastic force of the elastic plate 52, the abdomen supporting plate 50 is elastically abutted against the abdomen of a user, so that the use comfort of the prone sleeping device is improved, and the abdomen supporting plate 50 is connected with the elastic plate 52, so that the use requirements of different users can be met;

the upper end of the abdomen supporting plate 50 is provided with a hinge claw 501 protruding into the opening 531, a limit strip 532 is arranged below the opening 531, and the hinge claw 501 abuts against the limit strip 532, so that the rotation angle of the hinge shaft of the abdomen supporting plate 50 is limited;

more preferably, as shown in fig. 6 and 7, a circular tube 54 is disposed at the lower end of the abdomen supporting plate 50, the length direction of the circular tube 54 is parallel to the length direction of the supporting plate 30, a first opening 541 and a second opening 542 are respectively disposed near two ends of the circular tube 54, the first opening 541 and the second opening 542 are communicated through a communication opening 543, a first sliding rod 55 is disposed in the circular tube 54, a supporting rod 551 is disposed on a rod body of the first sliding rod 55, the lumbar supporting soft plate 60 is disposed at a rod end of the lumbar supporting soft plate 60, the rod end of the supporting rod 551 protrudes out of the first opening or the second opening 542, a first limiting ring 552 is disposed on the rod body of the first sliding rod 55, a second limiting ring is disposed on the rod end of the circular tube 54, a first supporting spring 56 is sleeved on the supporting rod 551, two ends of the first supporting spring 56 respectively abut against the first limiting ring 552 and the second limiting ring 552, the second limiting ring is rotatably arranged in the pipe orifice of the circular pipe 54;

the lumbar support soft plate 60 is arranged at the rod end position of the supporting rod 551 of the first sliding rod 55, and the first sliding rod 55 is elastically supported by the first supporting spring 56, so that the lumbar support soft plate 60 is inclined to a close posture, the lumbar support soft plate 60 and the waist of the user can be effectively supported to adapt to the requirements of different waist sizes of users, when the lumbar support soft plate is not used, the supporting rod 551 crosses the communication opening 543 from the first opening 541 to enter the second opening 542 by rotating the first sliding rod 55, and the supporting soft plate 60 is prevented from being randomly displaced under the elastic supporting action of the first supporting spring 56;

in order to conveniently accommodate the lumbar support soft board 60 and the abdomen supporting board 50, a third accommodating elastic board 57 is arranged on the lower board surface of the supporting board 10, the third accommodating elastic boards 57 are distributed on two sides of the lumbar support soft board 60, and the lumbar support soft board 60 is abutted against or separated from the inner board surface of the lumbar support soft board 60;

the lower plate surface of the support plate 10 is bent by rotating the connecting support plate 53, and the elasticity of the elastic plate 52 is overcome, and the abdomen support plate 50 is bent, so that the abdomen support plate 50 is clamped into the third accommodating elastic plate 57, thereby fixing the abdomen support plate 50, and further accommodating the abdomen support plate 50.

For the realization to the support of user's lumbar vertebrae, it is shown in combination with fig. 8 that coupling mechanism includes the articulated first connecting rod 41 that sets up face under layer board 10, the articulated second connecting rod 42 that is provided with of lower extreme of first connecting rod 41, the articulated shaft level at first connecting rod 41 both ends just is parallel with the length direction with layer board 10, the rod end of second connecting rod 42 is provided with connecting rod 43, lumbar vertebrae supports the soft board 40 and sets up the rod end at connecting rod 43.

The second connecting rod 42 is provided with a sliding groove 421, the sliding groove 421 is arranged along the length direction of the second connecting rod 42, the sliding groove 421 is provided with an adjusting slider 422 in a sliding manner, the adjusting slider 422 is provided with a support plate 4221, the hinged end of the second connecting rod 42 and the first connecting rod 41 is provided with an adjusting support plate 423, the adjusting support plate 423 is provided with a second sliding rod 424, the second sliding rod 424 is parallel to the length direction of the second connecting rod 42, the support plate 4221 is provided with a sliding hole 4222, the sliding hole 4222 is concentric with the second sliding rod 424, the aperture of the sliding hole 4222 is larger than the rod diameter of the second sliding rod 424, the second sliding rod 424 is provided with a second limit ring 4241 in a sliding manner, the second sliding rod 424 is sleeved with a second support spring 425, two ends of the second support spring 425 are respectively connected with the second limit ring 4241 and the adjusting support plate 423, the adjusting slider 422 is further hinged with one end of the support rod 44, the other end of the stay bar 44 is hinged with the first connecting rod 41, and hinged shafts at two ends of the stay bar 44 are horizontal and parallel to the length direction of the supporting plate 10;

the second connecting rod 42 is provided with a sliding groove 421, and an adjusting slider 422 is arranged in the sliding groove 421, the adjusting slider 422 is connected with the first connecting rod 41 only through a support rod 44, so that the second connecting rod 42 and the first connecting rod 41 can be conveniently bent and stored;

the lumbar support soft board 40 is arranged on the connecting rod 43 at the end of the second connecting rod 42, when the height of the supporting plate 10 is adjusted, the lumbar support soft board 40 is raised, when the waist of a user abuts against the lumbar support soft board 40, the second connecting rod 42 rotates around the hinge shaft of the first connecting rod 41, so that the adjusting slider 422 slides along the sliding groove 421 and moves towards the hinge shaft of the second connecting rod 42 and the first connecting rod 41, the supporting plate 4221 abuts against the second limiting ring 4241 to overcome the elastic force of the second support spring 425, and the second sliding rod 424 can extend into the sliding hole 4222, so that the lumbar support soft board 40 can always elastically abut against the lumbar position of the user, effective support for the lumbar of the user is ensured, the lumbar support soft board can adapt to the use of users with different figures to a certain extent, and the use comfort level is high;

the lumbar support soft plate 40 is provided with an air bag or a spongy cushion 401 to realize soft support for the lumbar of the user.

A method for adjusting a lying sleeping posture, the method comprising the steps of:

a first step of rotating the belly pallet 50 such that the belly pallet 50 rotates from a lower plate surface of the pallet 10 to a side of the pallet 10;

secondly, the lumbar support soft plate 60 is rotated so that the lumbar support soft plate 60 is disposed at both sides of the abdomen supporting plate 50;

thirdly, rotating the connecting mechanism to enable the lumbar support soft plate 40 to be separately arranged at the lumbar of the user;

fourthly, rotating the flat tube 80 for accommodating the palm to enable the flat tube 80 to be attached to the table top;

fifthly, rotating the elbow supporting soft board 90 to enable the lower board surface of the elbow supporting soft board 90 to be attached to the desktop;

sixthly, the user sits on the chair, and the waist is clamped between the two waist supporting soft plates 60, and the lumbar supporting soft plate 40 is abutted against the lumbar of the user;

seventhly, extending two palms of the user into the flat tubes 80, and enabling the elbows to bear on the elbow supporting soft plate 90;

eighthly, the head of the user is lifted up, the supporting plate 10 is lifted up manually, after the head of the user is lifted up by a certain height, the head of the user is placed on the headrest 20 on the upper plate surface of the supporting plate 10, the nostrils of the face are located in the ventilation grooves 21, the height adjusting and locking unit is started, the rhombic structure formed by the two first connecting rods 71 and the second connecting rods 72 is locked, and the height positioning of the supporting plate 10 and the supporting plate 30 is realized.

Claims

1. Headrest height adjustment mechanism, its characterized in that: the palm and arm holding device comprises a supporting plate (10), wherein a headrest (20) is arranged on the upper plate surface of the supporting plate (10), a ventilating groove (21) is formed in the headrest (20) and is concentric with a ventilating hole (11) in the supporting plate (10), a supporting plate (30) is arranged below the supporting plate (10), the lower end of the supporting plate (30) and the lower plate surface of the supporting plate (10) form a palm and arm holding space, a height adjusting mechanism is arranged between the upper plate surface of the supporting plate (30) and the lower plate surface of the supporting plate (10), and the height adjusting mechanism is used for adjusting the distance between the supporting plate (10) and the supporting plate (30);

the height adjusting mechanism comprises a connecting rod unit arranged between the upper plate surface of the supporting plate (30) and the lower plate surface of the supporting plate (10), the connecting rod unit comprises two first connecting rods (71) hinged to the lower plate surface of the supporting plate (10), the rod ends of the two first connecting rods (71) are respectively hinged to a second connecting rod (72), the rod ends of the second connecting rods (72) are respectively hinged to the supporting plate (30), the two first connecting rods (71) and the two second connecting rods (72) form a diamond structure, rod end hinge shafts of the two first connecting rods (71) and the two second connecting rods (72) are horizontally arranged, the length direction of the rod end hinge shafts of the two first connecting rods (71) and the length direction of the rod end hinge shafts of the two second connecting rods (72) are perpendicular to the length direction of the supporting plate (10), and the hinge connection ends of;

the height adjusting and locking unit comprises a sliding block (73) arranged on the lower plate surface of the supporting plate (10), the length direction of the sliding block (73) is parallel to the length direction of the supporting plate (10), a strip-shaped sliding hole (731) is arranged on the sliding block (73), the section of the strip-shaped sliding hole (731) is rectangular, the strip-shaped sliding hole (731) is arranged along the length direction of the sliding block (73), a strip-shaped opening (732) is arranged on the lower plate surface of the sliding block (73), an adjusting sliding block (74) is arranged in the strip-shaped sliding hole (731), the section of the adjusting sliding block (74) is in an I shape, a first wing plate (741) on one side of the adjusting sliding block (74) is positioned in the strip-shaped sliding hole (731), a web plate (742) of the adjusting sliding block (74) protrudes out of the strip-shaped opening (732), and the outer plate surface of a second wing plate (743) on the other side of the adjusting sliding block, the other end of the supporting connecting rod (75) is in damping hinge connection with the hinge connection ends of the first connecting rod and the second connecting rod (71 and 72), hinge shafts at two ends of the supporting connecting rod (75) are parallel to the hinge connection of the first connecting rod and the second connecting rod (71 and 72), a first tooth surface (733) is arranged on the lower plate surface of the slider (73) where the strip-shaped opening (732) is located, a second tooth surface (744) is arranged on the opposite surface of the second wing plate (743) at the other side of the adjusting slider (74) and the lower plate surface of the slider (73), a first wing plate (741) at one side of the adjusting slider (74) and the hole wall of the strip-shaped sliding hole (731) where the strip-shaped opening (732) is located are arranged at intervals, and the first tooth surface (733) and the second tooth surface (;

a flat tube (80) for accommodating a palm is arranged between the two groups of supporting plates (30), a tube opening at one end of the flat tube (80) is large, a tube opening at one end of the flat tube is small, and a soft pad is arranged on the inner wall of a tube cavity of the flat tube (80);

elbow supporting soft plates (90) are arranged on the lower pipe walls of the flat pipes (80); the upper pipe wall of the flat pipe (80) is hinged to one end of a first folding connecting rod (81), the other end of the first folding connecting rod (81) is hinged to the lower plate surface of the supporting plate (10), hinge shafts at two ends of the first folding connecting rod (81) are horizontal and perpendicular to the length direction of the supporting plate (10), a first containing elastic plate (82) is arranged on the lower plate surface of the supporting plate (10), the first containing elastic plate (82) is located on two sides of the flat pipe (80) and distributed, and the first containing elastic plate (82) is abutted to or separated from the lower pipe wall of the flat pipe (80);

the elbow supports the one end of soft board (90) and the one end of second folding connecting rod (91) is articulated, the other end of second folding connecting rod (91) is articulated with the lower tube wall of flat pipe (80), the both ends articulated shaft level of second folding connecting rod (91) just is perpendicular with the length direction of layer board (10), the lower tube wall of flat pipe (80) is provided with the second and accomodates elastic plate (92), first both sides that are located elbow support soft board (90) of accomodating elastic plate (92) are distributed, elastic plate (92) are accomodate to the second and the last face of elbow support soft board (90) is supported and is leaned on or the separation.

2. The headrest height adjustment mechanism according to claim 1, wherein: the supporting plate (30) is arranged below the supporting plate (10) in two groups, the length direction of the supporting plate (30) is parallel to the length direction of the supporting plate (10), the connecting rod units are arranged between the supporting plate (30) and the supporting plate (10) at intervals and are connected with the connecting rod units on two sides of the supporting plate (10).

3. Lie prone device of sleeping, its characterized in that: the prone sleeping device comprising the headrest height adjustment mechanism of claim 1 or 2.