WO2019010814A1 - 一种结构稳定的可调节床垫 - Google Patents

一种结构稳定的可调节床垫 Download PDF

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Publication number
WO2019010814A1
WO2019010814A1 PCT/CN2017/102251 CN2017102251W WO2019010814A1 WO 2019010814 A1 WO2019010814 A1 WO 2019010814A1 CN 2017102251 W CN2017102251 W CN 2017102251W WO 2019010814 A1 WO2019010814 A1 WO 2019010814A1
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WIPO (PCT)
Prior art keywords
connecting rod
waist
pushing block
frame
fixing frame
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Application number
PCT/CN2017/102251
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English (en)
French (fr)
Inventor
符宁
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符宁
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Publication date
Application filed by 符宁 filed Critical 符宁
Priority to KR2020187000090U priority Critical patent/KR200492203Y1/ko
Publication of WO2019010814A1 publication Critical patent/WO2019010814A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/08—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/08—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously
    • A47C20/10—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously using rods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/015—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position

Definitions

  • the utility model relates to the technical field of mattresses, and more particularly to an adjustable mattress with stable structure.
  • the mattresses that people use are basically flat on the bed, they are fixed and can only provide people with a comfortable sleeping position.
  • people's demand for mattresses is not limited to this. For example, when people sit on a bed reading a book or watching TV, they hope that the mattress can stand up and people can lean on it.
  • the existing mattress has a single function and cannot meet the needs of people.
  • the existing patent application number CN201520789176.X the authorization announcement date is March 9, 2016, and the utility model name is: electric invisible mattress.
  • the application includes an electric bed frame that is wrapped by a cushion body to form a mattress; the electric bed frame includes a central fixing frame, a bed tail frame connected to one end of the fixing frame by at least two links, and a hinged fixing frame a headboard frame at the other end, the first linear motor and the second linear motor are connected to the fixed frame, and the driving shaft of the first linear motor is connected by a connecting rod and drives the bed frame horizontally and horizontally, the second The drive shaft of the linear motor is connected and drives the bed frame to swing around the hinge point.
  • the application can be folded properly for the convenience of the user. However, the application still has the following problems:
  • the rotation of the headstock frame is completed by the second linear motor driving the second connecting piece fixed on the headboard frame, and the driving shaft end of the second linear motor is hinged with the second connecting piece, and the driving mode is unstable. And the pressure is concentrated on the hinge point of the second connecting piece and the driving shaft, and the second connecting piece is extremely damaged;
  • the central fixed frame and the headboard frame are directly hinged.
  • the angle formed between the headboard frame and the fixed frame is small.
  • the waist of the human body is suspended and cannot be leaned on the mattress.
  • the earth affects the comfort of the user when leaning on, and is harmful to human bone health;
  • the middle fixed frame and the tailstock frame are connected by two connecting rods, and the first connecting piece, the upper connecting rod, the lower connecting rod and the bed tail frame form a parallelogram structure, and the parallelogram structure is very unstable, when the working time is long.
  • the connection between the first connecting piece, the upper connecting rod, the lower connecting rod and the tailstock frame is loose, causing noise and even structural damage.
  • the purpose of the present invention is to overcome the above problems of the existing mattress and to provide an adjustable mattress with a stable structure.
  • the first driving mechanism pushes the bed head frame to lift and lower through the waist pushing block, and the pressure is concentrated on the waist pushing block, the design is more reasonable, the work is more stable, and the service life is longer.
  • the utility model relates to a structurally stable adjustable mattress, comprising an intermediate fixing frame, a headboard frame and a bed tail frame respectively connected to two ends of the intermediate fixing frame, wherein the headboard frame is fixed with a back connecting rod,
  • the back connecting rod is hinged to one end of the lumbar connecting rod, and the other end of the lumbar connecting rod is hinged to the left end of the intermediate fixing bracket, and the inside of the lumbar connecting rod is provided with a sliding groove for receiving the lumbar push block, the waist portion One end of the push block abuts the end of the back connecting rod, and the abutting portion of the waist push block and the back connecting rod is located below the hinge point of the back connecting rod and the waist connecting rod, and the other end of the waist pushing block is fixed to the middle
  • the first push block disposed in the frame is offset
  • the intermediate drive frame is further provided with a first drive mechanism for driving the first push block to move left and right.
  • the waist push block is a step block
  • the chute is a stepped hole shape
  • the head of the waist push block abuts the back connecting rod.
  • the length of the head of the lumbar push block is greater than the depth of the head hole of the chute.
  • the back joint of the back connecting rod and the waist push block are a protrusion.
  • the protruding portion of the back connecting rod protrudes into the sliding slot when the mattress is in a flat state.
  • the leg rest frame is fixed with a calf connecting rod
  • the calf connecting rod is hinged to the right end of the thigh connecting rod
  • the left end of the thigh connecting rod and the intermediate fixing frame are The right end is hinged
  • the middle fixing frame is provided with a second pushing block that abuts the left end of the thigh connecting rod, and the abutting portion of the thigh connecting rod and the second pushing block is located at the thigh connecting rod and the middle fixing
  • the intermediate fixing frame is further provided with a second driving mechanism for driving the second pushing block to move left and right.
  • the right end of the thigh connecting rod is provided with a slope which is located below the hinge point of the thigh connecting rod and the calf connecting rod.
  • the first driving mechanism includes a micro motor, a worm, a worm wheel, a lead screw and a first nut holder, and an output end of the micro motor is connected to a worm drive, and the worm wheel and the screw are coaxially fixed.
  • the worm gear is matched with the worm drive, the first nut bracket is threadedly engaged with the lead screw, and the first push block is disposed at the left end of the first nut bracket.
  • a structurally stable adjustable mattress of the present invention wherein the first driving mechanism pushes the headstock frame up and down by the waist pushing block, and the pressure is concentrated on the waist pushing block, the design is more reasonable, the work is more stable, and the service life is longer. Longer.
  • a structurally stable adjustable mattress of the present invention wherein the waist push block is a step block, the chute is a stepped hole shape, and the length of the waist push block head is greater than the depth of the chute head hole
  • the head of the waist push block first resists the back connecting rod, pushing the back connecting rod to rotate relative to the waist connecting rod, and then the step of the waist pushing block abuts against the chute in the waist connecting rod.
  • Step surface pushing the waist connecting rod to rotate relative to the intermediate fixing frame, and setting the waist connecting rod
  • a structurally stable adjustable mattress of the present invention wherein a portion of the back connecting rod that abuts the waist pushing block is a protruding portion, and the protruding portion protrudes when the mattress is in a flat state In the chute, the push of the waist pushes the back connecting rod more stably.
  • a structurally stable adjustable mattress of the present invention wherein the second driving mechanism drives the thigh connecting rod to rotate, thereby driving the tailstock frame to be lifted and lowered, the connecting structure is simple and reliable, and the work is more stable.
  • the right end of the thigh connecting rod is provided with a slope, which is located below the hinge point of the thigh connecting rod and the calf connecting rod, when After the thigh connecting rod rotates around the intermediate fixing frame by a certain angle, the bed tailstock frame is lifted and lowered to avoid the synchronous rotation of the tailstock frame and the thigh connecting rod, so that the tilting angle of the tailstock frame is too large, and the use is more comfortable.
  • Figure 1 is a folded state view of a structurally stable adjustable mattress of the present invention
  • Figure 2 is a plan view showing the flat state of the structurally stable adjustable mattress of the present invention.
  • Fig. 3 is a plan view showing the structure of a portion I of Fig. 2;
  • a structurally stable adjustable mattress of the present embodiment includes an intermediate fixing frame 32, a headstock frame 31 and a bed end frame 30 respectively connected to both ends of the intermediate fixing frame 32, and the headstock frame 31.
  • the outer portion of the intermediate fixing frame 32 and the tailstock frame 30 are covered with a cushion body.
  • the head frame 31 is fixed with a back connecting rod 24, and the back connecting rod 24 is hinged with one end of the waist connecting rod 23, and the waist connecting rod 23 is further One end is hinged to the left end of the intermediate fixing frame 32, and the inside of the waist connecting rod 23 is provided with a sliding groove 23-1 for accommodating the lumbar pushing block 22, and one end of the lumbar pushing block 22 is opposite to the end of the back connecting rod 24, and the waist is pushed up.
  • the abutting portion of the back connecting rod 24 is located below the hinge point of the back connecting rod 24 and the waist connecting rod 23, and the other end of the lumbar pushing block 22 is opposite to the first pushing block 21 provided in the intermediate fixing frame 32, and is fixed in the middle.
  • a first drive mechanism for driving the first push block 21 to move left and right is also provided in the frame 32.
  • the lumbar push block 22 of the present embodiment is a step block
  • the chute 23-1 is a stepped hole shape
  • the lumbar push block 22 is The head and the back connecting rod 24 are abutted, and the length of the head of the lumbar push block 22 is greater than the depth of the head hole of the chute 23-1 (the head of the lumbar push block 22 refers to the small diameter end, the chute 23-1
  • the head hole is also referred to as a small diameter hole.
  • the abutment of the waist push block 22 with the first push block 21 is an acute angle bevel, as shown in FIG.
  • the head of the lumbar push block 22 first abuts against the back connecting rod 24, pushing the back connecting rod 24 to rotate relative to the lumbar connecting rod 23, and then the steps of the lumbar pushing block 22 are in conflict with each other.
  • the step surface of the sliding groove 23-1 in the waist connecting rod 23 pushes the waist connecting rod 23 to rotate relative to the intermediate fixing frame 32, and the setting of the waist connecting rod 23 realizes the holding of the waist of the human body, which is more ergonomic and improved.
  • the comfort level is used.
  • the abutment portion of the back connecting rod 24 of the present embodiment and the waist pushing block 22 is a protruding portion, and the protruding portion of the back connecting rod 24 extends into the chute when the mattress is in a flat state.
  • the pushing of the lumbar push block 22 to the back connecting rod 24 is more stable.
  • a small leg connecting rod 26 is fixed to the bed frame 30 of the embodiment, and the lower leg connecting rod 26 is hinged to the right end of the thigh connecting rod 25, and the left end of the thigh connecting rod 25 and the intermediate fixing frame 32 are The right end is hinged, and the intermediate fixing frame 32 is provided with a second pushing block 20 that abuts the left end of the thigh connecting rod 25, and the abutting portion of the thigh connecting rod 25 and the second pushing block 20 is located at the thigh connecting rod 25 Below the hinge point of the intermediate holder 32, a second drive mechanism for driving the second push block 20 to move left and right is also provided in the intermediate holder 32.
  • the right end of the thigh connecting rod 25 is provided with a slope, as shown in Fig.
  • the first driving mechanism of the embodiment includes a micro motor, a worm 15 , a worm wheel 16 , a lead screw 17 and a first nut holder 11 .
  • the output end of the micro motor is drivingly connected with the worm 15 , and the worm wheel 16 and the lead screw 17 coaxially fixed, of course, the worm wheel 16 is rotatably mounted in the intermediate fixing frame 32 through the bearing 12, and the worm wheel 16 is mechanically coupled with the worm 15, the first nut holder 11 and the lead screw 17 are screw-fitted, and the first push block 21 is provided.
  • the first driving mechanism of the embodiment includes a micro motor, a worm 15 , a worm wheel 16 , a lead screw 17 and a first nut holder 11 .
  • the output end of the micro motor is drivingly connected with the worm 15 , and the worm wheel 16 and the lead screw 17 coaxially fixed, of course, the worm wheel 16 is rotatably mounted in the intermediate fixing frame 32 through the bearing 12, and the
  • both ends of the stroke of the first nut holder 11 are provided with a limit switch 19, and when the first nut holder 11 is moved to the rightmost end of its stroke, the first nut holder 11 triggers the limit of the right end.
  • the position switch 19 the first nut holder 11 is no longer moved to the right.
  • the headstock 31 is in a horizontal position; when the first nut holder 11 is moved to the leftmost end of its stroke, the first nut holder 11 triggers the limit of the left end.
  • the position switch 19 the first nut holder 11 is no longer moved to the left, and at this time, the headstock 31 is at the maximum angle at which it can be lifted.
  • the triggering portion of the first nut holder 11 to the limit switch 19 is preferably inclined to ensure smooth triggering without damaging the limit switch 19.
  • the structural principle of the second driving mechanism of this embodiment is basically the same as that of the first driving mechanism described above, and details are not described herein.
  • the micro motor that controls the movement of the headstock 31 and the micro of the control bed tail frame 30 are moved.
  • the motors are independent of each other.
  • the present embodiment will now be described with reference to FIGS. 1 to 3.
  • the working status is briefly explained.
  • the micro motor that controls the movement of the headstock 31 rotates forward to drive the worm 15 to rotate, and the worm 15 drives the worm wheel 16 and the lead screw 17 to rotate, and the first nut holder 11 drives the first push block 21 to Moving left, the first push block 21 pushes the lumbar push block 22 to the left, and the head of the lumbar push block 22 first resists the back connecting rod 24, pushing the back connecting rod 24 to rotate relative to the waist connecting rod 23, and then pushing the step of the lumbar pushing block 22 Resisting the step surface of the sliding groove 23-1 in the waist connecting rod 23, the lumbar connecting rod 23 is pushed to rotate relative to the intermediate fixing frame 32, and when the first nut holder 11 is moved to the leftmost end of the stroke thereof, the left end limit switch is triggered.
  • the micro motor stops working, the first nut bracket 11 stops moving, at this time, the position of the headstock 31 is at the maximum angle that can be lifted; when the bed frame 30 needs to be lifted, the micro motor that controls the movement of the tailstock 30
  • the forward rotation finally drives the second push block 20 to the right by the second nut holder 18, and the second push block 20 pushes the thigh connecting rod 25 to rotate relative to the intermediate holder 32, and then the inclined portion of the right end of the thigh connecting rod 25 Connecting the rod 26 with the calf The end faces abut, which in turn drives the bed frame 30 to rise.
  • the limit switch 19 at the right end thereof is triggered, the micro motor stops working, and the second nut holder 18 stops moving.
  • the position of the bed frame 30 is at the highest position that can be raised.
  • the micro motor that controls the movement of the headstock 31 is reversed, and the first nut holder 11 is moved to the right, the lumbar push block 22 is moved to the right, and the headstock 31 is lowered, when the first nut holder 11 is right.
  • the limit switch 19 at the right end is triggered, the micro motor stops working, and the first nut holder 11 stops moving.
  • the headstock 31 is in a horizontal position; when the bed frame 30 needs to be lowered
  • the micro motor that controls the movement of the tailstock 30 is reversed, and the second nut holder 18 drives the second push block 20 to move to the left, and the thigh connecting rod 25 and the tailstock 30 are lowered, and when the second nut holder 18 moves to its stroke At the leftmost end, the limit switch 19 at the left end is triggered, the micro motor stops working, and the second nut holder 18 stops moving.
  • the thigh connecting rod 25 and the bed frame 30 are in a horizontal position.
  • the utility model relates to a structurally stable adjustable mattress.
  • the first driving mechanism pushes the bed frame lifting and lowering through the waist pushing block, and the pressure is concentrated on the waist pushing block, the design is more reasonable, the work is more stable, and the service life is longer; the waist
  • the connecting rod is arranged to support the waist of the human body, which is more ergonomic and improves the comfort of use;
  • the second driving mechanism drives the thigh connecting rod to rotate, thereby driving the tailstock frame to be lifted and lowered, and the connecting structure is simple and reliable, and works. more stable.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

一种结构稳定的可调节床垫，涉及床垫技术领域。包括中间固定架(32)、床头架(31)和床尾架(30)，床头架(31)上固设有背部连接杆(24)，背部连接杆(24)与腰部连接杆(23)的一端铰接，且腰部连接杆(23)的另一端与中间固定架(32)的左端铰接，腰部连接杆(23)的内部设有一容纳腰部推块(22)的滑槽(23-1)，腰部推块(22)的一端与背部连接杆(24)的端部相抵，且腰部推块(22)的另一端与中间固定架(32)内设有的第一推块(21)相抵，中间固定架(32)内还设有驱动第一推块(21)左右移动的第一驱动机构。第一驱动机构通过腰部推块(22)推动床头架(31)升降，压力集中在腰部推块(22)上，设计更合理，工作更稳定，使用寿命更长。

Description

一种结构稳定的可调节床垫 技术领域
本实用新型涉及床垫技术领域，更具体地说，涉及一种结构稳定的可调节床垫。
背景技术
目前人们使用的床垫基本上都是平放在床上，是固定不动的，只能为人们提供舒适的睡姿。但是，人们对于床垫的需求已不局限于这一点，例如当人们坐在床上看书或者看电视时，就希望床垫可以立起来，人可以靠在上面。但是，现有的床垫功能单一，不能满足人们的使用需求。
现有专利申请号CN201520789176.X，授权公告日为2016年3月9日，实用新型名称为：电动隐形床垫。该申请案包括电动床架，所述电动床架由垫体包裹形成床垫；所述电动床架包括中部的固定架、通过至少二连杆连接在固定架一端的床尾架和在铰接固定架另一端的床头架，所述固定架上连接有第一直线电机和第二直线电机，所述第一直线电机的驱动轴通过连杆连接并驱动床尾架水平升降，所述第二直线电机的驱动轴连接并驱动床头架绕铰接点摆动。该申请案能够适当折叠，方便使用者使用。但该申请案还存在以下问题：
1、床头架的转动由第二直线电机驱动固设在床头架上的第二连接片完成，第二直线电机的驱动轴端与第二连接片铰接，这种驱动方式工作并不稳定，并且压力集中于第二连接片与驱动轴的铰接点上，第二连接片极易损坏；
2、中部的固定架与床头架之间直接铰接，当床头架转动时，床头架与固定架之间形成的角度较小，此时人体腰部悬空，无法倚靠在床垫上，极大地影响了使用者倚靠时的舒适度，且有害人体骨骼健康；
3、中部的固定架与床尾架通过二连杆连接，第一连接片、上连杆、下连杆以及床尾架形成一平行四边形结构，而平行四边形结构是十分不稳定的，当工作时间长了，第一连接片、上连杆、下连杆以及床尾架之间的连接关系会松动，发出噪声，甚至发生结构损坏。
发明内容
1.实用新型要解决的技术问题
本实用新型的目的在于克服现有的床垫存在的上述问题，提供一种结构稳定的可调节床垫。采用本实用新型的技术方案，第一驱动机构通过腰部推块推动床头架升降，压力集中在腰部推块上，设计更合理，工作更稳定，使用寿命更长。
2.技术方案
为达到上述目的，本实用新型提供的技术方案为：
本实用新型的一种结构稳定的可调节床垫，包括中间固定架、分别连接在中间固定架的两端的床头架和床尾架，所述的床头架上固设有背部连接杆，所述的背部连接杆与腰部连接杆的一端铰接，且腰部连接杆的另一端与中间固定架的左端铰接，所述的腰部连接杆的内部设有一容纳腰部推块的滑槽，所述的腰部推块的一端与背部连接杆的端部相抵，且腰部推块与背部连接杆的相抵部位于背部连接杆与腰部连接杆的铰接点的下方，所述的腰部推块的另一端与中间固定架内设有的第一推块相抵，所述的中间固定架内还设有驱动第一推块左右移动的第一驱动机构。
更进一步地，所述的腰部推块为阶梯块，所述的滑槽为阶梯孔状，所述的腰部推块的头部与背部连接杆相抵。
更进一步地，所述的腰部推块的头部的长度大于滑槽的头部孔的深度。
更进一步地，所述的背部连接杆的与腰部推块的相抵处为一凸出部。
更进一步地，所述的背部连接杆的凸出部在该床垫处于平整状态时伸入滑槽内。
更进一步地，所述的床尾架上固设有小腿部连接杆，所述的小腿部连接杆与大腿部连接杆的右端铰接，且大腿部连接杆的左端与中间固定架的右端铰接，所述的中间固定架内设有与大腿部连接杆的左端相抵的第二推块，且大腿部连接杆与第二推块的相抵部位于大腿部连接杆与中间固定架的铰接点的下方，所述的中间固定架内还设有驱动第二推块左右移动的第二驱动机构。
更进一步地，所述的大腿部连接杆的右端设有一斜面，该斜面位于大腿部连接杆与小腿部连接杆的铰接点的下方。
更进一步地，所述的第一驱动机构包括微型电机、蜗杆、蜗轮、丝杠以及第一螺母支架，所述的微型电机的输出端与蜗杆传动连接，所述的蜗轮与丝杠同轴固连，且蜗轮与蜗杆传动配合，所述的第一螺母支架与丝杠螺纹配合，所述的第一推块设于第一螺母支架的左端。
3.有益效果
采用本实用新型提供的技术方案，与已有的公知技术相比，具有如下有益效果：
(1)本实用新型的一种结构稳定的可调节床垫，其第一驱动机构通过腰部推块推动床头架升降，压力集中在腰部推块上，设计更合理，工作更稳定，使用寿命更长。
(2)本实用新型的一种结构稳定的可调节床垫，其腰部推块为阶梯块，滑槽为阶梯孔状，且腰部推块的头部的长度大于滑槽的头部孔的深度，当第一推块推动腰部推块时，腰部推块的头部先抵触背部连接杆，推动背部连接杆相对于腰部连接杆转动，然后腰部推块的台阶抵触腰部连接杆内的滑槽的台阶面，推动腰部连接杆相对于中间固定架转动，腰部连接杆的设 置实现了对人体腰部的托持，更符合人体工程学，提高了使用舒适度。
(3)本实用新型的一种结构稳定的可调节床垫，其背部连接杆的与腰部推块的相抵处为一凸出部，且该凸出部在该床垫处于平整状态时伸入滑槽内，腰部推块对背部连接杆的推动更加稳定。
(4)本实用新型的一种结构稳定的可调节床垫，其第二驱动机构驱动大腿部连接杆转动，进而带动床尾架升降，连接结构简单且可靠，工作更加稳定。
(5)本实用新型的一种结构稳定的可调节床垫，其大腿部连接杆的右端设有一斜面，该斜面位于大腿部连接杆与小腿部连接杆的铰接点的下方，当大腿部连接杆绕中间固定架转动一定角度后，再带动床尾架升降，避免床尾架与大腿部连接杆同步转动，造成床尾架的倾角过大，使用更舒适。
附图说明
图1为本实用新型的一种结构稳定的可调节床垫的折叠状态图；
图2为本实用新型的一种结构稳定的可调节床垫的平整状态图；
图3为图2的I部的俯视结构图。
示意图中的标号说明：
11、第一螺母支架；12、轴承；15、蜗杆；16、蜗轮；17、丝杠；18、第二螺母支架；19、限位开关；20、第二推块；21、第一推块；22、腰部推块；23、腰部连接杆；23-1、滑槽；24、背部连接杆；25、大腿部连接杆；26、小腿部连接杆；30、床尾架；31、床头架；32、中间固定架。
具体实施方式
为进一步了解本实用新型的内容，结合附图和实施例对本实用新型作详细描述。
实施例
结合图1和图2，本实施例的一种结构稳定的可调节床垫，包括中间固定架32、分别连接在中间固定架32的两端的床头架31和床尾架30，床头架31、中间固定架32和床尾架30的外部包覆有垫体，床头架31上固设有背部连接杆24，背部连接杆24与腰部连接杆23的一端铰接，且腰部连接杆23的另一端与中间固定架32的左端铰接，腰部连接杆23的内部设有一容纳腰部推块22的滑槽23-1，腰部推块22的一端与背部连接杆24的端部相抵，且腰部推块22与背部连接杆24的相抵部位于背部连接杆24与腰部连接杆23的铰接点的下方，腰部推块22的另一端与中间固定架32内设有的第一推块21相抵，中间固定架32内还设有驱动第一推块21左右移动的第一驱动机构。
如图3所示，本实施例的腰部推块22为阶梯块，滑槽23-1为阶梯孔状，腰部推块22的 头部与背部连接杆24相抵，腰部推块22的头部的长度大于滑槽23-1的头部孔的深度(腰部推块22的头部指的是小径端，滑槽23-1的头部孔也即指小径孔)，腰部推块22的与第一推块21的相抵处为一锐角斜面，如图2所示。当第一推块21向左推动腰部推块22时，腰部推块22的头部先抵触背部连接杆24，推动背部连接杆24相对于腰部连接杆23转动，然后腰部推块22的台阶抵触腰部连接杆23内的滑槽23-1的台阶面，推动腰部连接杆23相对于中间固定架32转动，腰部连接杆23的设置实现了对人体腰部的托持，更符合人体工程学，提高了使用舒适度。
接续图1和图2，本实施例的背部连接杆24的与腰部推块22的相抵处为一凸出部，背部连接杆24的凸出部在该床垫处于平整状态时伸入滑槽23-1内，腰部推块22对背部连接杆24的推动更加稳定。
本实施例的床尾架30上固设有小腿部连接杆26，小腿部连接杆26与大腿部连接杆25的右端铰接，且大腿部连接杆25的左端与中间固定架32的右端铰接，中间固定架32内设有与大腿部连接杆25的左端相抵的第二推块20，且大腿部连接杆25与第二推块20的相抵部位于大腿部连接杆25与中间固定架32的铰接点的下方，中间固定架32内还设有驱动第二推块20左右移动的第二驱动机构。大腿部连接杆25的右端设有一斜面，如图2所示，该斜面位于大腿部连接杆25与小腿部连接杆26的铰接点的下方，当大腿部连接杆25绕中间固定架32转动一定角度后，再带动床尾架30升降，避免床尾架30与大腿部连接杆25同步转动，造成床尾架30的倾角过大，使用更舒适。
如图1所示，本实施例的第一驱动机构包括微型电机、蜗杆15、蜗轮16、丝杠17以及第一螺母支架11，微型电机的输出端与蜗杆15传动连接，蜗轮16与丝杠17同轴固连，当然蜗轮16通过轴承12可转动地安装在中间固定架32内，且蜗轮16与蜗杆15传动配合，第一螺母支架11与丝杠17螺纹配合，第一推块21设于第一螺母支架11的左端。为了限定床头架31的调节位置，第一螺母支架11的行程的两端设有限位开关19，当第一螺母支架11运动到其行程的最右端时，第一螺母支架11触发右端的限位开关19，则第一螺母支架11不再右移，此时，床头架31处于水平位置；当第一螺母支架11运动到其行程的最左端时，第一螺母支架11触发左端的限位开关19，则第一螺母支架11不再左移，此时，床头架31处于可抬起的最大角度。当然，第一螺母支架11上对限位开关19的触发部优选斜面，以保证触发平稳而不损坏限位开关19。本实施例的第二驱动机构的结构原理与上述的第一驱动机构基本相同，在此不再赘述，这里需要指出的是，控制床头架31运动的微型电机和控制床尾架30运动的微型电机相互独立。
为了更好地理解本实施例的一种结构稳定的可调节床垫，现结合图1～图3对本实施例的 工作状态作简要说明。当需要抬起床头架31时，控制床头架31运动的微型电机正转，带动蜗杆15转动，蜗杆15带动蜗轮16与丝杠17转动，则第一螺母支架11带动第一推块21向左移动，第一推块21推动腰部推块22左移，腰部推块22的头部先抵触背部连接杆24，推动背部连接杆24相对于腰部连接杆23转动，然后腰部推块22的台阶抵触腰部连接杆23内的滑槽23-1的台阶面，推动腰部连接杆23相对于中间固定架32转动，当第一螺母支架11运动至其行程的最左端时，触发左端的限位开关19，微型电机停止工作，第一螺母支架11停止运动，此时，床头架31的位置即处于可抬起的最大角度；当需要抬起床尾架30时，控制床尾架30运动的微型电机正转，最终由第二螺母支架18带动第二推块20向右移动，第二推块20推动大腿部连接杆25相对于中间固定架32转动，然后大腿部连接杆25右端的斜面与小腿部连接杆26的左端面相抵，进而带动床尾架30上升，当第二螺母支架18运动至其行程的最右端时，触发其右端的限位开关19，微型电机停止工作，第二螺母支架18停止运动，此时，床尾架30的位置即处于可升起的最高位置。
当需要下降床头架31时，控制床头架31运动的微型电机反转，第一螺母支架11右移，则腰部推块22右移，床头架31下降，当第一螺母支架11右移至其行程的最右端时，触发其右端的限位开关19，微型电机停止工作，第一螺母支架11停止运动，此时，床头架31即处于水平位置；当需要下降床尾架30时，控制床尾架30运动的微型电机反转，第二螺母支架18带动第二推块20向左移动，则大腿部连接杆25和床尾架30下降，当第二螺母支架18运动至其行程的最左端时，触发其左端的限位开关19，微型电机停止工作，第二螺母支架18停止运动，此时，大腿部连接杆25和床尾架30处于水平位置。
本实用新型的一种结构稳定的可调节床垫，第一驱动机构通过腰部推块推动床头架升降，压力集中在腰部推块上，设计更合理，工作更稳定，使用寿命更长；腰部连接杆的设置实现了对人体腰部的托持，更符合人体工程学，提高了使用舒适度；第二驱动机构驱动大腿部连接杆转动，进而带动床尾架升降，连接结构简单且可靠，工作更加稳定。
以上示意性地对本实用新型及其实施方式进行了描述，该描述没有限制性，附图中所示的也只是本实用新型的实施方式之一，实际的结构并不局限于此。所以，如果本领域的普通技术人员受其启示，在不脱离本实用新型创造宗旨的情况下，不经创造性地设计出与该技术方案相似的结构方式及实施例，均应属于本实用新型的保护范围。

Claims (8)

  1. 一种结构稳定的可调节床垫，包括中间固定架(32)、分别连接在中间固定架(32)的两端的床头架(31)和床尾架(30)，其特征在于：所述的床头架(31)上固设有背部连接杆(24)，所述的背部连接杆(24)与腰部连接杆(23)的一端铰接，且腰部连接杆(23)的另一端与中间固定架(32)的左端铰接，所述的腰部连接杆(23)的内部设有一容纳腰部推块(22)的滑槽(23-1)，所述的腰部推块(22)的一端与背部连接杆(24)的端部相抵，且腰部推块(22)与背部连接杆(24)的相抵部位于背部连接杆(24)与腰部连接杆(23)的铰接点的下方，所述的腰部推块(22)的另一端与中间固定架(32)内设有的第一推块(21)相抵，所述的中间固定架(32)内还设有驱动第一推块(21)左右移动的第一驱动机构。
  2. 根据权利要求1所述的一种结构稳定的可调节床垫，其特征在于：所述的腰部推块(22)为阶梯块，所述的滑槽(23-1)为阶梯孔状，所述的腰部推块(22)的头部与背部连接杆(24)相抵。
  3. 根据权利要求2所述的一种结构稳定的可调节床垫，其特征在于：所述的腰部推块(22)的头部的长度大于滑槽(23-1)的头部孔的深度。
  4. 根据权利要求1或2或3所述的一种结构稳定的可调节床垫，其特征在于：所述的背部连接杆(24)的与腰部推块(22)的相抵处为一凸出部。
  5. 根据权利要求4所述的一种结构稳定的可调节床垫，其特征在于：所述的背部连接杆(24)的凸出部在该床垫处于平整状态时伸入滑槽(23-1)内。
  6. 根据权利要求1所述的一种结构稳定的可调节床垫，其特征在于：所述的床尾架(30)上固设有小腿部连接杆(26)，所述的小腿部连接杆(26)与大腿部连接杆(25)的右端铰接，且大腿部连接杆(25)的左端与中间固定架(32)的右端铰接，所述的中间固定架(32)内设有与大腿部连接杆(25)的左端相抵的第二推块(20)，且大腿部连接杆(25)与第二推块(20)的相抵部位于大腿部连接杆(25)与中间固定架(32)的铰接点的下方，所述的中间固定架(32)内还设有驱动第二推块(20)左右移动的第二驱动机构。
  7. 根据权利要求6所述的一种结构稳定的可调节床垫，其特征在于：所述的大腿部连接杆(25)的右端设有一斜面，该斜面位于大腿部连接杆(25)与小腿部连接杆(26)的铰接点的下方。
  8. 根据权利要求1所述的一种结构稳定的可调节床垫，其特征在于：所述的第一驱动机构包括微型电机、蜗杆(15)、蜗轮(16)、丝杠(17)以及第一螺母支架(11)，所述的微型电机的输出端与蜗杆(15)传动连接，所述的蜗轮(16)与丝杠(17)同轴固连，且蜗轮(16)与蜗杆(15)传动配合，所述的第一螺母支架(11)与丝杠(17)螺纹配合，所述的第一推块(21)设于第一螺母支架(11)的左端。
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