Disclosure of Invention
The invention aims to provide a height-adjustable nursing bed which has a bed frame which cannot incline or shake and has a more stable bed frame structure.
In order to achieve the purpose, the invention adopts the following technical scheme: a nursing bed with adjustable height comprises a bed frame and an underframe, wherein the bed frame is connected to the upper side of the underframe through a plurality of lifting connecting rods, each lifting connecting rod consists of an upper connecting rod and a lower connecting rod, the upper ends of the upper connecting rods are rotatably fixed with the bed frame, the lower ends of the lower connecting rods are rotatably fixed with the underframe, the lower ends of the upper connecting rods are rotatably fixed with the upper ends of the lower connecting rods, and the bed frame or the underframe is connected with a lifting driving mechanism which enables the upper connecting rods and the lower connecting rods of the lifting connecting rods to be.
According to the nursing bed, the plurality of lifting connecting rods are arranged between the bed frame and the underframe of the nursing bed, the upper ends and the lower ends of the lifting connecting rods are respectively and rotatably fixed with the bed frame and the underframe, when the upper connecting rods and the lower connecting rods of the lifting connecting rods rotate, the size of an included angle between the upper connecting rods and the lower connecting rods can be changed only by horizontally moving the joints of the upper connecting rods and the lower connecting rods, so that the lifting connecting rods are folded, the lifting of the bed frame is realized without horizontally moving the upper ends of the upper connecting rods or the lower ends of the lower connecting rods, the bed frame cannot move forwards, backwards, leftwards and rightwards when lifted. Wherein, as long as realize that the contained angle size is the same between the upper connecting rod of a plurality of lifting connecting rods and lower connecting rod, just enable the bedstead and correspond lifting connecting rod everywhere highly the same for the difficult slope of bedstead can guarantee the level and place.
As preferred, it passes through the articulated shaft and the rotatable fixed in lower connecting rod upper end to go up the connecting rod lower extreme, the lift actuating mechanism output is equipped with the dwang along the parallel lines of articulated shaft axis setting, the dwang can use self axis as central rotation under the lift actuating mechanism effect, be connected with pendulum rod and gangbar between dwang and lift connecting rod, wherein one end at both ends is fixed with the dwang about the pendulum rod, the other end and the gangbar rotatable fixation at both ends about the pendulum rod, the skew pendulum rod department of gangbar and the rotatable fixed of lift connecting rod.
The rotating rod rotates to enable the swing rod to swing, so that the linkage rod moves axially along the linkage rod to pull or push the lifting connecting rod, the upper connecting rod and the lower connecting rod are folded, and the lifting of the bed frame is achieved. Through setting up dwang, pendulum rod and gangbar to make the lift of bedstead more steady. Meanwhile, the lifting driving mechanism is not directly connected with the lifting connecting rod, so that the folding angle between the upper connecting rod and the lower connecting rod of the lifting connecting rod is larger, and the lifting amplitude of the bed frame is larger.
Preferably, the joint of the upper connecting rod and the lower connecting rod is rotatably connected with one end of the linkage rod deviating from the swing rod. The movement of the linkage rod directly drives the upper connecting rod and the lower connecting rod to rotate simultaneously, so that the folding of the lifting connecting rod is more labor-saving.
Preferably, the rotating rod is rotatably fixed on the bed frame or the underframe. The fixed stability of above-mentioned setting in order to improve the dwang to avoid the dwang to take place to go up and down or the translation, and then guarantee the stability of lift connecting rod, in order to avoid the bedstead slope.
Preferably, the lifting connecting rods include a first left lifting connecting rod, a first right lifting connecting rod, a second left lifting connecting rod and a second right lifting connecting rod, the first left lifting connecting rod and the first right lifting connecting rod are respectively arranged between the left side and the right side of the front section of the underframe and the left side and the right side of the front section of the bedstead, and the second left lifting connecting rod and the second right lifting connecting rod are respectively arranged between the left side and the right side of the rear section of the underframe and the left side and the right side of the rear section of the bedstead.
The lifting connecting rod is composed of a first left lifting connecting rod, a first right lifting connecting rod, a second left lifting connecting rod and a second right lifting connecting rod, so that the support of the bedstead is more stable, the peripheral edge of the bedstead is not easy to collapse, the bedstead is not easy to incline, and a user can lie conveniently.
Preferably, the swing rods comprise a first swing rod and a second swing rod, one end of the first swing rod is fixed with the rotating rod, a linkage rod is connected between the other end of the first swing rod and the first right lifting connecting rod, one end of the second swing rod is fixed with the rotating rod, and a linkage rod is connected between the other end of the second swing rod and the second left lifting connecting rod; the dwang sets up and is located between first left lifting connecting rod and the left lifting connecting rod of second, is located between first right lifting connecting rod and the right lifting connecting rod of second along left right direction.
The first swing rod and the second swing rod are respectively linked with a lifting connecting rod, and one swing rod is only linked with one lifting connecting rod, so that the bed frame is smoother when ascending and descending, and is not easy to clamp. The rotating rod is positioned between the first left lifting connecting rod and the second left lifting connecting rod, so that the linkage rod can be shorter.
Preferably, the lifting driving mechanism comprises a linear telescopic mechanism, one end of the linear telescopic mechanism is rotatably fixed with the bedstead or the underframe, and the other end of the linear telescopic mechanism is linked with the rotating rod; the linear telescopic mechanism is arranged along the front-back direction; the dwang is fixed with the one end of extension rod, the other end of extension rod and sharp telescopic machanism's output rotatable fixation.
The linear telescopic mechanism is arranged along the front-back direction, the included angle formed by the upper connecting rod and the lower connecting rod of the lifting connecting rod faces forwards or backwards, the directions of the bed head and the bed tail are taken as the front-back direction, when the included angle between the upper connecting rod and the lower connecting rod of the lifting connecting rod is reduced, the joint of the upper connecting rod and the lower connecting rod cannot extend to the left side and the right side of the bedstead, and the structure setting of the bedstead and the underframe cannot be interfered.
Preferably, a plurality of obliquely arranged support rods are connected between the bedstead and the underframe, the upper ends of the support rods are rotatably fixed with the bedstead, and the lower ends of the support rods are rotatably fixed with the underframe. The bracing piece is used for supporting the bedstead of chassis top, can improve the holistic structural stability of nursing bed.
Preferably, the upper end rotation center of the support rod is coaxial with the upper end rotation center of an upper connecting rod of one lifting connecting rod, and the lower end rotation center of the support rod is coaxial with the lower end rotation center of a lower connecting rod of the other lifting connecting rod. When the upper connecting rod and the lower connecting rod of the lifting connecting rod rotate and are folded, the overall structural strength of the nursing bed cannot be changed, so that the nursing bed has better use stability.
Preferably, the linear telescopic mechanism is an electric push rod. Through the self-locking function of the electric push rod, the rotating rod is locked, the positions of the oscillating rod and the linkage rod are kept, the size of an included angle formed by the upper connecting rod and the lower connecting rod of the lifting connecting rod is kept, and the height position of the bed frame is kept.
The invention has the advantages of better use stability, higher use comfort level and smoother lifting of the bed frame without blockage.
Detailed Description
The invention is further described below with reference to the figures and specific embodiments.
As shown in figures 1 and 2, the present embodiment discloses a height-adjustable nursing bed, which comprises a bed frame 1, a mattress 11 is arranged on the upper side of the bed frame 1, the bed frame 1 is connected on the upper side of an underframe 2 through four groups of lifting connecting rods, each lifting connecting rod is composed of an upper connecting rod 3 and a lower connecting rod 4, the upper ends of the upper connecting rods 3 are rotatably fixed with the bed frame 1, the lower ends of the lower connecting rods 4 are rotatably fixed with the underframe 2, the lower ends of the upper connecting rods 3 are rotatably fixed with the upper ends of the lower connecting rods 4, and the underframe 2 is connected with a lifting driving mechanism which can fold the upper connecting rods 3. Wherein, lift actuating mechanism includes sharp telescopic machanism, and sharp telescopic machanism one end is rotatable fixed with chassis 2, and sharp telescopic machanism is electric putter 21. Wherein, the head side of the nursing bed is taken as the front, and the tail side of the nursing bed is taken as the back.
Wherein, four groups of lifting connecting rods include first left lifting connecting rod 31, first right lifting connecting rod 32, second left lifting connecting rod 33, second right lifting connecting rod 34, be equipped with first left lifting connecting rod 31, first right lifting connecting rod 32 between the left and right sides of chassis 2 anterior segment and the left and right sides of bedstead 1 anterior segment respectively, be equipped with second left lifting connecting rod 33, second right lifting connecting rod 34 between the left and right sides of chassis 2 rear segment and the left and right sides of bedstead 1 rear segment respectively.
The lower end of the upper connecting rod 3 is rotatably fixed with the upper end of the lower connecting rod 4 through an articulated shaft, the output end of an electric push rod 21 of the lifting driving mechanism is provided with a rotary rod 5 which is arranged along the parallel line of the axis of the articulated shaft, the rotary rod 5 can rotate around the axis of the electric push rod 21 of the lifting driving mechanism, a swing rod and a linkage rod 6 are connected between the rotary rod 5 and the lifting connecting rod, one end of the swing rod at the upper end and the lower end is fixed with the rotary rod 5, the other end of the swing rod at the upper end and the lower end is rotatably fixed with the linkage rod 6, and the joint of the upper connecting rod 3 and the. The rotating rod 5 is disposed along the left-right direction and rotatably fixed on the bottom frame 2, and the rotating rod 5 is disposed between the first left lifting link 31 and the second left lifting link 33 and between the first right lifting link 32 and the second right lifting link 34. Wherein, lifting drive mechanism's electric putter 21 sets up along the fore-and-aft direction, and dwang 5 is fixed with the lower extreme of extension rod 51, and extension rod 51 upper end and lifting drive mechanism's electric putter 21 output can be fixed by rotating.
The swing rods comprise a first swing rod 71 and a second swing rod 72, the lower end of the first swing rod 71 and the lower end of the second swing rod 72 are respectively fixed with the left end and the right end of the rotating rod 5, a linkage rod is connected between the upper end of the first swing rod 71 and the first right lifting connecting rod 32, and a linkage rod is connected between the upper end of the second swing rod 72 and the second left lifting connecting rod 34.
Two obliquely arranged support rods 8 are connected between the bedstead 1 and the underframe 2, the upper ends of the support rods 8 are rotatably fixed with the bedstead 1, and the lower ends of the support rods 8 are rotatably fixed with the underframe 2. The upper end rotation centers of the two support rods 8 are coaxially disposed with the upper end rotation center of the upper link of the second left lift link 32 and the upper end rotation center of the upper link of the second right lift link 34, and the lower end rotation centers of the two support rods 8 are coaxially disposed with the upper end rotation center of the upper link of the first left lift link 31 and the upper end rotation center of the upper link of the first right lift link 33.
The invention has the advantages of better use stability, higher use comfort level and smoother lifting of the bed frame without blockage.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.