WO2023138028A1 - 电动升降护栏和具有该护栏的护理床 - Google Patents

电动升降护栏和具有该护栏的护理床 Download PDF

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Publication number
WO2023138028A1
WO2023138028A1 PCT/CN2022/109623 CN2022109623W WO2023138028A1 WO 2023138028 A1 WO2023138028 A1 WO 2023138028A1 CN 2022109623 W CN2022109623 W CN 2022109623W WO 2023138028 A1 WO2023138028 A1 WO 2023138028A1
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WO
WIPO (PCT)
Prior art keywords
cross bar
swing arm
guardrail
linkage
lower cross
Prior art date
Application number
PCT/CN2022/109623
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English (en)
French (fr)
Inventor
刘敏
闫红凯
闫红进
闫双行
Original Assignee
闫双行
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Filing date
Publication date
Application filed by 闫双行 filed Critical 闫双行
Publication of WO2023138028A1 publication Critical patent/WO2023138028A1/zh

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Classifications

    • 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
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/0507—Side-rails
    • A61G7/0516—Side-rails with height adjustability

Definitions

  • the invention relates to the technical field of bed guardrails, in particular to an electric lifting guardrail and a nursing bed with the guardrail.
  • the guardrail is an important part of the nursing bed. While the ordinary fixed guardrail provides protection for the user, it also hinders the user's getting on and off the bed and the care of the nursing staff. Therefore, an adjustable guardrail structure appears. When the user uses the nursing bed, the guardrail structure rises to prevent the user from falling from the nursing bed. But existing guardrail structure of nursing bed is relatively single, and the guardrail of traditional nursing bed does not have lift function, and after laying air cushion on the bed, the actual use height of guardrail is shortened, can cause the danger that patient slips down, and therefore, prior art still needs to be improved.
  • an electric lift guardrail comprising: an upper cross bar and a lower cross bar; a scissors mechanism, including multiple sets of swing arms and driven arms that are pivotally connected in pairs; each of the driven arms and the swing arms has two ends in the telescoping direction, and the two ends of the driven arms are respectively pivotally connected to the upper cross bar and the lower cross bar; a drive assembly, the drive assembly is accommodated in the receiving cavity of the lower cross bar; and the drive assembly is connected to the end of the swing arm , so as to drive the scissor mechanism to expand or tighten, thereby driving the upper cross bar and the lower cross bar to move away from or approach.
  • the drive assembly includes a linear motion actuator and a linkage
  • the output end of the linear motion actuator is fixedly connected to the linkage
  • the linkage is pivotally connected to the end of each swing arm
  • the movement direction of the output end of the linear motion actuator is perpendicular to the telescopic direction of the scissors mechanism.
  • the linear motion actuator is a ball screw linear module
  • the ball screw linear module is fixed in the storage cavity of the lower cross bar
  • the output end of the ball screw linear module is fixedly connected to the linkage.
  • the linkage includes a linear guide rail, a slide table and a linkage rod;
  • the linear guide rail is arranged parallel to the moving direction of the linear motion actuator, and the linear guide rail is fixedly connected to the lower cross bar;
  • the slide table is slidably connected to the linear guide rail, the linkage rod is pivotally connected to the end of the swing arm, and the linkage rod is connected to the slide table.
  • the linkage rod moves to drive the swing arm and the driven arm to perform telescopic movement.
  • the linkage rod is provided with a plurality of connecting holes, each of the connecting holes corresponds to the end of each of the swing arms, and the swing arm is connected to the connecting holes through a pivot.
  • a first limiting track groove is formed on the inner wall of the storage cavity of the lower crossbar, and a clamping column is formed on a side of the pivot close to the first limiting track groove, and the clamping column is adapted to the limiting track groove, and the first limiting track groove restricts the detachment of the clamping column.
  • a second limiting track groove is formed on the inner wall of the accommodating cavity of the upper cross bar, and the end of the swing arm close to the upper cross bar is snapped into the second limiting track groove.
  • an opening is provided on the opposite side of the upper cross bar and the lower cross bar, and the opening allows the scissors mechanism to pass through.
  • it also includes a control assembly and at least two micro switches, the micro switches are respectively arranged at both ends of the ball screw linear module, the micro switches are electrically connected to the control assembly, and the control assembly is controlled by buttons or wirelessly.
  • a nursing bed comprising the above-mentioned electric lifting guardrail and a bed body.
  • a set of electric lifting guardrails are respectively connected to both sides of the bed body.
  • the lower crossbar of each set of electric lifting guardrails is fixed to the bed body, and the stretching direction of the scissor mechanism is perpendicular to the bed surface.
  • the present invention provides an electric lifting guardrail and a nursing bed with the guardrail, including an upper crossbar and a lower crossbar; a scissors mechanism, including multiple sets of swing arms and follower arms that are pivotally connected in pairs; each follower arm and swing arm have two ends in the telescoping direction, and the two ends of the follower arm are respectively pivotally connected to the upper crossbar and the lower crossbar;
  • the drive assembly is accommodated in the receiving chamber of the lower crossbar; Open or tighten, thereby driving the upper cross bar and the lower cross bar to move away or approach; through the lateral movement of the drive assembly, that is, the lower cross bar drives one end of the swing arm in the axial direction, and the driven arm is pivotally fixed, so that the horizontal lateral movement can be converted into the movement of the upper cross bar and the lower cross bar to move away or approach, and the overall structure is ingeniously designed and the transmission is precise;
  • Fig. 1 is the overall structure diagram of the present invention.
  • Fig. 2 is a side view of the present invention with part of the casing hidden.
  • Fig. 3 is a schematic diagram of the internal structure of the lower cross bar of the present invention.
  • Fig. 4 is a structural diagram of the driving assembly omitting the linkage rod in the present invention.
  • Fig. 5 is a structural schematic diagram of the linkage rod and the scissors mechanism of the present invention.
  • Fig. 6 is an exploded view of the structure of the linkage rod and the scissors mechanism of the present invention.
  • Fig. 7 is a diagram of the internal structure of the present invention in a contracted state.
  • Component symbol description 1, upper crossbar; 11, second limit track groove; 2, lower cross bar; 21, first limit track groove; 3, scissors mechanism; 31, swing arm; 311, pivot; 231, connection hole; 5, control component; 51, micro switch; 52, button; 6, opening mouth; A, stretching direction.
  • the guardrail of the nursing bed has two forms, one is fully enclosed, and the disadvantage of this structure is obvious, making it very difficult for the user to step up and down; Unstable, due to the long length of the guardrail, it is prone to disjoint or shake when the moving parts are in motion; therefore, there is still a lot of room for improvement for the realization of the telescopic function of the guardrail.
  • an electric lifting guardrail please refer to Fig. 1-Fig. 3, Fig. 7; Comprising: Upper cross bar 1 and lower cross bar 2; 33.
  • the abutment part 33 makes the swing wall abut against the driven arm; the abutment part abuts against the adjacent swing arm or the driven arm, thereby realizing the limit; the drive assembly 4, the drive assembly 4 is accommodated in the storage cavity of the lower cross bar 2; Due to the limitation of the structure of the scissor mechanism during the elongation of the scissor mechanism, the two scissor arms crossed together will gradually overlap, so that the moment between the main engine and the two scissor arms at the top of the scissor mechanism becomes smaller, and the moment between the upper cross bar and the two scissor arms at the bottom of the scissor mechanism also becomes smaller.
  • the connection stability between the scissors mechanism and the upper crossbar and the lower crossbar will be affected; and as a guardrail, the upper crossbar and the lower crossbar are longer in length, and the scissors mechanism needs to be distributed in multiple groups in the lateral direction, and the transmission structure cannot be linked. It can only drive the structure at the middle or both ends to expand and contract as a whole, so the stability of the adjustment is not enough; and the two ends of the driven arm are pivotally connected to the upper crossbar and the lower crossbar, and the corresponding pivotally connected swing arm is driven by the drive assembly in the horizontal and lateral direction.
  • the group swing arm and the follower arm are expanded and contracted in coordination to realize the smooth approach and separation of the upper crossbar and the lower crossbar from the overall scissors mechanism; to ensure the precise and reliable control of the entire mechanism.
  • the driving assembly is arranged in the lower crossbar, so after the scissors mechanism shrinks, the internal storage chambers of the lower crossbar and the upper crossbar can accommodate the entire scissors mechanism, which improves the portability of the overall structure and can also improve structural safety.
  • the drive assembly 4 includes a linear motion actuator 41 and a linkage 42, the output end of the linear motion actuator is fixedly connected to the linkage, the linkage is pivotally connected to the end of each swing arm, and the movement direction of the output end of the linear motion actuator is perpendicular to the telescopic direction of the scissors mechanism.
  • the linear motion actuator is used to realize the linear motion of the end, and then the linkage piece fixedly connected with the output end is used to realize the multi-point and long-stroke coordinated force application, so that the end of each swing arm can move at a uniform speed, so that the overall structure is uniformly stressed and can be stably controlled for expansion and contraction.
  • the linear motion actuator 41 is a ball screw linear module
  • the ball screw linear module is fixed in the storage chamber of the lower cross bar
  • the output end of the ball screw linear module is fixedly connected to the linkage.
  • the ball screw achieves precise linear displacement through its screw nut, which has small friction loss and high transmission efficiency, so it is very suitable for controlling the high-precision micro-feed of the scissor mechanism; however, due to the limited length of the screw and the shape of the screw nut, it is very inconvenient to connect the transmission of the multi-point mechanism. Deficiencies in the driving force; more progressive enhancements to the precise control of the scissor mechanism.
  • the linkage 42 includes a linear guide rail 421, a slide table 422 and a linkage rod 423;
  • the linear guide rail 421 is arranged parallel to the direction of motion of the linear motion actuator 41, and the linear guide rail is fixedly connected to the lower cross bar;
  • the moving rod is connected with the slide table, and when the slide table is driven, the linkage rod moves to drive the swing arm and the follower arm to perform telescopic motion.
  • the kinetic energy is transmitted to the sliding table through the screw nut. Since the sliding table has a self-locking function, it can better cooperate with the screw nut to achieve precise control under single-point thrust, and use the linear guide rail to achieve lengthening of the stroke and full area coverage.
  • the installation of the sliding table and external components is also more regular and convenient, and multi-point coordinated force is achieved, thereby further enhancing coordinated control.
  • the linkage rod 423 is provided with a plurality of connection holes 4231, and each connection hole corresponds to the end of each swing arm, and the swing arm and the connection hole are connected by the pivot 311; the linkage rod is precisely driven by the slide table, thereby accurately applying force to the swing arm, and then the swing arm and its pivoted follower arm work together to achieve a telescopic effect.
  • the inner wall of the receiving chamber of the lower crossbar 2 is formed with a first limiting track groove 21, and the side of the pivot 311 close to the first limiting track groove is formed with a clamping column 3111, which is adapted to the limiting track groove, and the first limiting track groove 21 restricts the clamping column from coming out; since the end of the follower arm is uniformly fixed on the lower crossbar, and the end of the swing arm adjacent to it is pivotally connected to the linkage rod, the linkage rod is fixed with the slide table, and linearly moves Both the actuator and the linkage are fixed in the cavity of the lower crossbar. Therefore, the movement trajectory of the end of the swing arm when driven needs to be parallel to the axial direction of the linkage rod.
  • a clamping column that is adapted to the first limit track slot will be formed at the end of the pivot, which can not only limit the movement direction of the swing arm, but also limit the expansion and contraction limit of the swing arm; thus making the overall movement more precise and standardized.
  • the first set of swing arms that are pivotally connected to the sliding table there is no need to limit the position through the first limiting track groove, because it is itself connected to the sliding table and the linkage rod, so the movement is already very precise.
  • the inner wall of the accommodation cavity of the upper cross bar 1 is formed with a second limit track groove 11, and the end of the swing arm close to the upper cross bar is clamped in the second limit track groove; similarly, in order to better limit its movement direction, the movement process is more stable, and can better drive the upper cross bar to achieve stretching, so the second limit track groove is used to cooperate with the upper end of the swing arm to limit the position.
  • an opening 6 is provided on the opposite side of the upper cross bar 1 and the lower cross bar 2; the opening of the opening is for the scissor mechanism to pass through; when the scissor mechanism is folded, the scissor mechanism is folded in the opening formed by the upper cross bar and the lower cross bar; the entire scissor mechanism can be better accommodated; the whole is more beautiful.
  • a control assembly 5 and at least two microswitches 51 are also included.
  • the microswitches 51 are respectively arranged at both ends of the ball screw linear module.
  • the microswitches are electrically connected to the control assembly, and the control assembly is controlled by a button 52 or wirelessly.
  • Limiting and detecting the displacement limit through the micro switch can trigger the protection program written in the control component in time to realize self-power-off stop, and the control component can have a wireless communication module, which can be controlled by buttons or wireless remote control, which is convenient for users to use.
  • the so-called control component includes at least a circuit board on which the control circuit is written; other control functions can be added and written as appropriate.
  • a nursing bed which includes the above-mentioned electric lifting guardrail and a bed body.
  • a set of electric lifting guardrails are respectively connected to both sides of the bed body.
  • the lower crossbar of each set of electric lifting guardrails is fixed to the bed body, and the stretching direction of the scissor mechanism is perpendicular to the bed surface.
  • the upper crossbar can be equipped with a lifting control button and a wired remote control, through which the left guardrail or the right guardrail can be selected to be controlled; at the same time, a sensor can be installed on the scissors mechanism to detect that an object has accidentally protruded into the through hole of the scissors mechanism, and a protective stop will be performed if the object may be caught; or a motor resistance detection can be added to the circuit system.
  • the technical effects of the present invention are as follows: 1. Accurate control of multi-point transmission is achieved through ingenious transmission design; precise expansion and contraction of the guardrail is realized. 2.
  • the drive assembly is arranged in the lower crossbar, so after the scissors mechanism shrinks, the internal storage chambers of the lower crossbar and the upper crossbar can accommodate the scissors mechanism, which improves the portability of the overall structure and improves structural safety.

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

Abstract

一种电动升降护栏，电动升降护栏包括上横杆（1）和下横杆（2）；剪叉机构（3），包括多组两两交叉枢接的摆动臂（31）和从动臂（32）；每根从动臂（32）和摆动臂（31）在伸缩方向上具有两个端部，且从动臂（32）的两个端部分别枢接于上横杆（1）和下横杆（2）上；驱动组件（4），驱动组件（4）容置于下横杆（2）的收纳腔中；且驱动组件（4）与摆动臂（31）的端部连接，以驱动剪叉机构张开或收紧，从而带动上横杆（1）和下横杆（2）远离或靠近；通过驱动组件（4）在横向运动，即下横杆（2）轴向方向去驱动摆动臂（31）的一端，从而实现将水平的横向运动转化为上横杆（1）和下横杆（2）的远离或靠近动作，且整体结构设计巧妙，传动精准；非常适合护理床进行安装使用，方便使用者进行精准调节。还提供一种带升降护栏的护理床。

Description

电动升降护栏和具有该护栏的护理床 技术领域
本发明涉及床体护栏技术领域，特别是涉及一种电动升降护栏和具有该护栏的护理床。
 背景技术
现有技术中，电动护理床，轮椅车，坐便椅，助行器，家居床，沙发，坐椅和护理床等；均设置有护栏组件。
对于护理床来说，护栏是护理床的一个重要部件，普通固定式护栏为使用者提供保护的同时，也对使用者的上下床和护理人员的护理造成阻碍，因此出现了一种可调节的护栏结构，当使用者使用护理床时，护栏结构升起，防止使用者从护理床上跌落，当使用者上下床或护理人员进行护理时，护栏结构可以收起，使用更方便。但现有的护理床护栏结构都比较单一，且传统护理床的护栏不具有升降功能，当在床上铺设气垫后，护栏的实际使用高度缩短，会造成病人滑落的危险，因此，现有技术还有待改进。
虽然在护栏的发展过程中，存在一些可拆卸，或者可以压缩收纳的护栏，但是还是存在以下两点不足：升降结构的设计组件往往设置在竖直方向上，因此容易造成机构干涉，且使用过程容易对使用者造成危险；二是调节时的速度稳定性在现有技术中达不到高度协调和简易控制；因此，需要一种结构更加安全，调节速度更加稳定便捷的护栏机构及具有该护栏机构的床体。
 技术问题
在现有技术中，还存在护栏组件升降过程不稳定，且驱动机构结构设计干涉较大的技术问题；因此提供一种技术方案进行解决。
 技术解决方案
为实现上述目的，本发明提供一种电动升降护栏，包括：上横杆和下横杆； 剪叉机构，包括多组两两交叉枢接的摆动臂和从动臂；每根所述从动臂和所述摆动臂在伸缩方向上具有两个端部，且所述从动臂的两个端部分别枢接于所述上横杆和所述下横杆上；驱动组件，所述驱动组件容置于所述下横杆的收纳腔中；且所述驱动组件与所述摆动臂的端部连接，以驱动所述剪叉机构张开或收紧，从而带动所述上横杆和所述下横杆远离或靠近。
作为优选，所述驱动组件包括直线运动执行器和联动件，所述直线运动执行器的输出端与所述联动件固定连接，所述联动件与每根所述摆动臂的端部枢接，且所述直线运动执行器的输出端运动方向垂直于所述剪叉机构的伸缩方向。
作为优选，所述直线运动执行器为滚珠丝杆直线模组，所述滚珠丝杆直线模组固定在所述下横杆的收纳腔中，且所述滚珠丝杆直线模组的输出端与所述联动件固定连接。
作为优选，所述的联动件包括有直线导轨、滑台和联动杆；所述直线导轨与所述直线运动执行器的运动方向平行设置，且所述直线导轨与所述下横杆固定连接；所述滑台滑动连接在所述直线导轨上，所述联动杆与所述摆动臂的端部枢接，且所述联动杆与所述滑台连接，当所述滑台被驱动时，所述联动杆运动以带动所述摆动臂和所述从动臂做伸缩运动。
作为优选，所述联动杆上设置有多个连接孔，每个所述连接孔对应每根所述摆动臂的端部，所述摆动臂和所述连接孔通过枢轴连接。
作为优选，所述下横杆的收纳腔内壁形成有第一限位轨道槽，所述枢轴靠近所述第一限位轨道槽的一侧形成有卡接柱，所述卡接柱与所述限位轨道槽适配，且所述第一限位轨道槽限制所述卡接柱脱出。
作为优选，所述上横杆的容置腔的内壁形成有第二限位轨道槽，所述摆动臂的靠近所述上横杆的端部卡接在所述第二限位轨道槽内。
作为优选，所述上横杆和所述下横杆相向的一侧设置有开口，所述开口供所述剪叉机构穿过。
作为优选，还包括有控制组件和至少两个微动开关，所述微动开关分别设置在所述滚珠丝杆直线模组的两端，所述微动开关与所述控制组件电连接，所述控制组件通过按钮或无线进行控制。
还公开一种护理床，包括上述的电动升降护栏及床体，所述床体的两侧分别连接有一组电动升降护栏，每组电动升降护栏的下横杆与所述床体固定，所述剪叉机构的伸缩方向与床面垂直。
 有益效果
本发明提供本发明提供一种电动升降护栏和具有该护栏的护理床，包括上横杆和下横杆；剪叉机构，包括多组两两交叉枢接的摆动臂和从动臂；每根从动臂和摆动臂在伸缩方向上具有两个端部，且从动臂的两个端部分别枢接于上横杆和下横杆上；驱动组件，驱动组件容置于下横杆的收纳腔中；且驱动组件与摆动臂的端部连接，以驱动剪叉机构张开或收紧，从而带动上横杆和下横杆远离或靠近；通过驱动组件在横向运动，即下横杆轴向方向去驱动摆动臂的一端，从动臂枢接固定，从而实现将水平的横向运动转化为上横杆和下横杆的远离或靠近动作，且整体结构设计巧妙，传动精准；非常适合护理床进行使用，方便使用者进行精准调节。
 附图说明
图1为本发明整体结构图。
图2为本发明隐去部分壳体的侧视图。
图3为本发明下横杆内部结构示意图。
图4为本发明略去联动杆的驱动组件结构图。
图5为本发明联动杆及剪叉机构结构示意图。
图6为本发明联动杆及剪叉机构结构爆炸图。
图7为本发明的收缩状态时内部结构图。
元器件符号说明1、上横杆；11、第二限位轨道槽；2、下横杆；21、第一限位轨道槽；3、剪叉机构；31、摆动臂；311、枢轴；3111、卡接柱；32、从动臂；33、抵接部；4、驱动组件；41、直线运动执行器；42、联动件；421、直线导轨；422、滑台；423、联动杆；4231、连接孔；5、控制组件；51、微动开关；52、按钮；6、开口腔；A、伸缩方向。
 本发明的最佳实施方式
为了更清楚地表述本发明，下面结合附图对本发明作进一步地描述。
在下文描述中，给出了普选实例细节以便提供对本发明更为深入的理解。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部实施例。应当理解所述具体实施例仅用以解释本发明，并不用于限定本发明。
应当理解的是，当在本说明书中使用术语“包含”和或“包括”时，其指明存在所述特征、整体、步骤、操作、元件或组件，但不排除存在或附加一个或多个其他特征、整体、步骤、操作、元件、组件或它们的组合。
在现有技术中，护理床的护栏有两种形态，一种是全封闭式的，这种构造的缺点显而易见，让使用者非常难跨越进行上下；二是部分阻拦式的，长度方向的中部靠头部一侧安装有短节的护栏，这种护栏在现有技术中发展出了向一侧压缩收纳和可拆卸的两种构造；但是也还是存在缺陷；具体的来讲，对于压缩收纳，也非常难满足使用者的各种需求，且其传动结构要么设计在竖直方向，容易出现结构干涉，而且传动不稳定，由于护栏的长度较长，容易出现随动部件在运动时脱节或者抖动；因此，针对护栏的伸缩功能实现，还有很大的改进空间。
具体公开一种电动升降护栏，请参阅图1-图3、图7；包括：上横杆1和下横杆2； 剪叉机构3，包括多组两两交叉枢接的摆动臂31和从动臂32；每根从动臂32和摆动臂31在伸缩方向A上具有两个端部，且从动臂32的两个端部分别枢接于上横杆1和下横杆2上；且摆动壁和/或从动臂上设置有抵接部33，当剪叉机构伸缩至极限时，抵接部33使摆动壁和所述从动臂抵接；抵接部和相邻的摆动臂或者从动臂抵接，从而实现限位； 驱动组件4，驱动组件4容置于下横杆2的收纳腔中；且驱动组件4与摆动臂31的端部连接，以驱动剪叉机构张开或收紧，从而带动上横杆和下横杆远离或靠近。由于在剪叉机构伸长的过程中，受限于剪叉机构的结构，交叉在一起的两个剪叉臂之间会逐渐重合，使得主机与位于剪叉机构顶端的两个剪叉臂之间的力矩变小，上横杆与位于剪叉机构底端的两个剪叉臂之间的力矩也随之变小。如此一来，就会导致剪叉机构与上横杆、下横杆之间的连接稳定性受到影响；并且作为护栏使用，上横杆和下横杆的长度较长，而剪叉机构就需要在横向方向分布多组，而传动结构无法实现联动，只能驱动中部或者两端的结构进行整体的伸缩，因此调节的稳定性不够；而将从动臂的两端均枢接在上横杆和下横杆上，而对应枢接的摆动臂被驱动组件在水平横向方向驱动，从而带动每一组摆动臂和从动臂进行协同地展开和收缩，从整体的剪叉机构上实现上横杆和下横杆的平稳靠近和远离；保证整个机构的精准、可靠的控制。并且将驱动组件设置在下横杆中，因此剪叉机构在收缩后，下横杆和上横杆的内部收纳腔能够容置收纳剪叉机构整体，提高了整体结构的轻便程度，还能够提高结构安全性。
在本实施例中，请参阅图3-4；驱动组件4包括直线运动执行器41和联动件42，直线运动执行器的输出端与联动件固定连接，联动件与每根摆动臂的端部枢接，且直线运动执行器的输出端运动方向垂直于剪叉机构的伸缩方向。直线运动执行器来实现端部的直线运动，再通过与输出端固定连接的联动件来实现多点、长行程的协同施力，从而能够使得每根摆动臂的端部可以匀速的进行运动，达到整体结构受力均匀，能够稳定地进行伸缩控制。
在本实施例中，直线运动执行器41为滚珠丝杆直线模组，滚珠丝杆直线模组固定在下横杆的收纳腔中，且滚珠丝杆直线模组的输出端与联动件固定连接。滚珠丝杆通过其丝杆螺母实现精确的直线位移，其摩擦损失小、传动效率高，因此非常适合用来控制剪叉机构的高精度微进给；但是由于丝杆长度所限，并且丝杆螺母的形态限制，对于多点机构的传动在连接上非常不便，因为丝杆螺母是圆柱形结构，因此在某点位实现非对称的力时，容易出现偏位，因此需要连同联动件一起使用，来弥补丝杆螺母的长度不够长、且需要对多个点位同时施加驱动力的缺陷；更进步的加强剪叉机构的精确控制。
在进一步更优选的实施例中，请参阅图5-图6；联动件42包括有直线导轨421、滑台422和联动杆423；直线导轨421与直线运动执行器41的运动方向平行设置，且直线导轨与下横杆固定连接；滑台滑动连接在直线导轨上，滑台安装连接板来分别与丝杆螺母连接，同时和第一根摆动臂枢接；联动杆与摆动臂的端部枢接，且联动杆与滑台连接，当滑台被驱动时，联动杆运动以带动摆动臂和从动臂做伸缩运动。通过丝杆螺母传递动能至滑台上，由于滑台具有自锁功能，因此其能够更好的配合丝杆螺母实现单点推力下的精准控制，并且借助直线导轨来做到行程的加长和全区域覆盖，于此同时，滑台和外部部件的安装也更加规则方便，做到多点位协同施力，进而进一步增强协同控制。
在本实施例中，联动杆423上设置有多个连接孔4231，每个连接孔对应每根摆动臂的端部，摆动臂和连接孔通过枢轴311连接；联动杆被滑台精准驱动，从而精确施力给摆动臂，再由摆动臂和其枢接的从动臂共同作用达到伸缩效果。
在本实施例中，下横杆2的收纳腔内壁形成有第一限位轨道槽21，枢轴311靠近第一限位轨道槽的一侧形成有卡接柱3111，卡接柱与限位轨道槽适配，且第一限位轨道槽21限制卡接柱脱出；由于从动臂端部一致被枢接固定在下横杆上，而与其相邻的摆动臂的端部枢接在联动杆上，联动杆又和滑台固定，而直线运动执行器和联动件均固定在下横杆的腔体内，因此摆动臂的端部被驱动时的运动轨迹需要与联动杆的轴向方向平行，那么为了适配上横杆伸展的高度，别适配剪叉机构的节数限制，因此将通过在枢轴的端部再形成一个与第一限位轨道槽适配的卡接柱，即能够限定摆动臂的运动方向，又能限定摆动臂的伸缩极限；从而使得整体运动更加精准规范。并且针对枢接在滑台上的第一组摆动臂，不需要通过第一限位轨道槽进行限位，因为其本身就连接了滑台、联动杆，因此移动动作已经非常精准。
在本实施例中，上横杆1的容置腔的内壁形成有第二限位轨道槽11，摆动臂的靠近上横杆的端部卡接在第二限位轨道槽内；同样的，为了更好的限定其运动方向，运动过程更加稳定，且能够更好的带动上横杆实现伸缩，因此采用第二限位轨道槽配合摆动臂的上端部进行限位。
在本实施例中，上横杆1和下横杆2相向的一侧设置有开口腔6；开口腔的开口供所述剪叉机构穿过；当剪叉机构收叠时，剪叉机构收叠于上横杆和下横杆围合成的开口腔内；能够更好的收纳整个剪叉机构；整体更加美观。
在本实施例中，还包括有控制组件5和至少两个微动开关51，微动开关51分别设置在滚珠丝杆直线模组的两端，微动开关与控制组件电连接，控制组件通过按钮52或无线进行控制。通过微动开关来限定和检测位移极限，可以及时触发写入在控制组件中的保护程序，以实现自我断电停止，并且在控制组件中可以具有无线通讯模组，既能通过按钮进行控制，又能通过无线遥控器进行控制，方便用户使用。所谓控制组件至少包括有写入了控制电路的电路板；其余控制功能可以酌情进行添加写入。
还公开一种护理床，包括上述的电动升降护栏及床体，床体的两侧分别连接有一组电动升降护栏，每组电动升降护栏的下横杆与床体固定，剪叉机构的伸缩方向与床面垂直。更具体地，为了方便使用者进行控制，可以在上横杆上配备有升降控制按钮，以及配备有线遥控器，通过有线遥控器来选择控制左侧护栏或者右侧护栏；同时在剪叉机构上可以设置传感器，来检测物体误伸入到剪叉机构的通孔中，在可能夹到的情况下进行保护性停止；亦或者在电路系统中加入电机阻力检测，当电机转动收到异常阻力的阈值时，进行紧急停止，在解除异常情况、保证安全的前提下进行再次启动。
 工业实用性
本发明的技术效果有：1、通过巧妙的传动设计，来达到多点传动的精准控制；实现护栏的精准伸缩。2、将驱动组件设置在下横杆中，因此剪叉机构在收缩后，下横杆和上横杆的内部收纳腔能够容置收纳剪叉机构，提高了整体结构的轻便程度，还能够提高结构安全性。
以上公开的仅为本发明的几个具体实施例，但是本发明并非局限于此，任何本领域的技术人员能思之的变化都应落入本发明的保护范围。

Claims (10)

  1. 一种电动升降护栏，其特征在于，包括：
    上横杆和下横杆；
    剪叉机构，包括多组两两交叉枢接的摆动臂和从动臂；每根所述从动臂和所述摆动臂在伸缩方向上具有两个端部，且所述从动臂的两个端部分别枢接于所述上横杆和所述下横杆上；
    驱动组件，所述驱动组件容置于所述下横杆的收纳腔中；且所述驱动组件与所述摆动臂的端部连接，所述摆动臂的另一个端部可滑动设置在所述上横杆，以驱动所述剪叉机构张开或收紧；从而带动所述上横杆和所述下横杆远离或靠近。
  2. 根据权利要求1所述的电动升降护栏，其特征在于，所述驱动组件包括直线运动执行器和联动件，所述直线运动执行器的输出端与所述联动件固定连接，所述联动件与每根所述摆动臂的端部枢接，且所述直线运动执行器的输出端运动方向垂直于所述剪叉机构的伸缩方向。
  3. 根据权利要求2所述的电动升降护栏，其特征在于，所述直线运动执行器为滚珠丝杆直线模组，所述滚珠丝杆直线模组固定在所述下横杆的收纳腔中，且所述滚珠丝杆直线模组的输出端与所述联动件固定连接。
  4. 根据权利要求2或3任一项所述的电动升降护栏，其特征在于，所述联动件包括有直线导轨、滑台和联动杆；所述直线导轨与所述直线运动执行器的运动方向平行设置，且所述直线导轨与所述下横杆固定连接；所述滑台滑动连接在所述直线导轨上，所述联动杆与所述摆动臂的端部枢接，且所述联动杆与所述滑台连接，当所述滑台被驱动时，所述联动杆运动以带动所述摆动臂和所述从动臂做伸缩运动。
  5. 根据权利要求4所述的电动升降护栏，其特征在于，所述联动杆上设置有多个连接孔，每个所述连接孔对应每根所述摆动臂的端部，所述摆动臂和所述连接孔通过枢轴连接。
  6. 根据权利要求5所述的电动升降护栏，其特征在于，所述下横杆的收纳腔内壁形成有第一限位轨道槽，所述枢轴靠近所述第一限位轨道槽的一侧形成有卡接柱，所述卡接柱与所述限位轨道槽适配，且所述第一限位轨道槽限制所述卡接柱脱出。
  7. 根据权利要求6所述的电动升降护栏，其特征在于，所述上横杆的容置腔的内壁形成有第二限位轨道槽，所述摆动臂的靠近所述上横杆的端部卡接在所述第二限位轨道槽内。
  8. 根据权利要求1所述的电动升降护栏，其特征在于，所述上横杆和所述下横杆相向的一侧设置有开口，所述开口供所述剪叉机构穿过。
  9. 根据权利要求3所述的电动升降护栏，其特征在于，还包括有控制组件和至少两个微动开关，所述微动开关分别设置在所述滚珠丝杆直线模组的两端，所述微动开关与所述控制组件电连接，所述控制组件通过按钮或无线进行控制。
  10. 一种护理床，其特征在于，包括权利要求1-9任一项所述的电动升降护栏及床体，所述床体的两侧分别连接有一组电动升降护栏，每组电动升降护栏的下横杆与所述床体固定，所述剪叉机构的伸缩方向与床面垂直。
PCT/CN2022/109623 2022-01-24 2022-08-02 电动升降护栏和具有该护栏的护理床 WO2023138028A1 (zh)

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