CN115500645A - Back of body of taking helping hand pushes away bedstead and beddo - Google Patents

Abstract

The invention discloses a back pushing bed frame with assistance and an electric bed, wherein the back pushing bed frame with assistance comprises a fixed frame, a backrest support and an assistance support, the assistance support is provided with an assistance arm which synchronously rotates along with the assistance support, and the free end of the assistance arm is propped against the back surface of the backrest support at least when the backrest support is in a folded state; the power assisting device also comprises a sliding part and an electric push rod, wherein the sliding part is in linkage connection with the power assisting support and can drive the power assisting support to rotate when the sliding part slides; the electric push rod is connected with the backrest bracket and the sliding part; when the electric push rod drives the sliding piece to slide from the first position to the second position, the backrest bracket rotates and unfolds from a folded state; when the sliding piece stays at the second position, the backrest bracket can continuously rotate and unfold relative to the fixed bracket under the driving of the electric push rod so as to adjust the inclination angle of the backrest bracket. The back push bed frame with the assistance and the electric bed are small in packaging volume, and the electric push rod can enable the back support to be unfolded quickly by small force in the initial state.

Description

A back push bed frame and an electric bed with power assistance

technical field

The invention relates to the technical field of furniture equipment, in particular to a back push bed frame and an electric bed with power assistance.

Background technique

Along with the raising of people's living standard, electric bed is widely used. Its structure of the electric bed of prior art comprises bed frame, bed leg and the back support and the leg support that are connected on the bed frame, one end of the back support is hinged with the leg support, and is connected between the back support and the bed frame. The driving motor for the rotation of the backrest bracket; the electric bed can adjust the user's sleeping posture, lying down, sitting and other postures, and relieve fatigue, so it is deeply loved by users. In order to facilitate the use of the electric bed in the prior art with the ordinary bed in the user's home, the electric bed frame is generally independently configured. The electric bed frame is also called a back push bed frame. The ordinary bed can be turned into an electric bed by placing the back push bed frame on the bed frame of the ordinary bed.

The back push bed frame of the prior art has a structure comprising a fixed frame and a backrest bracket. The fixed frame is placed on the bed frame and fixed with the bed frame. The frame can rotate around the rotation axis; an electric push rod is arranged between the fixed frame and the backrest bracket, one end of the electric push rod is hinged with the fixed frame, and the other end of the electric push rod is hinged with the backrest bracket, and can be moved when the electric push rod expands or contracts. Drive the angle of rotation of the backrest support. In order to make the back push bed frame have a smaller packaging volume to facilitate transportation and save packaging costs, the thickness of the back push bed frame in the folded state should be designed as small as possible. The ideal state is that the fixed frame and the backrest support are fully folded The included angle between the latter two is zero or close to zero, and now the electric push rod between the fixed mount and the back support is roughly in a horizontal state or close to horizontal. When the electric push rod pushes the backrest bracket to the initial state of unfolding, because the angle between the backrest bracket and the fixed frame is small, the backrest bracket cannot be rotated and unfolded quickly or the electric push rod needs to provide a large force to rotate the backrest bracket However, when the user is actually using it, the user usually assists the rotation and deployment of the backrest bracket by hand, which is very cumbersome to operate. Therefore, after the backrest bracket and the fixed frame of most back push bed frames are completely folded, the angle between the backrest bracket and the fixed frame is set larger, so that the electric push rod can expand the backrest bracket in the initial state. , but even so, the electric push rod must use a large force to expand the backrest bracket due to the small inclination angle in the initial state. In addition, the width of the back push bed frame in the prior art is fixed after production, that is, one back push bed frame is only suitable for a mattress of one width, and its versatility is poor, so it cannot meet the needs of users.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the defects of the prior art above, and provide a kind of power-assisted push rod with small packaging volume, and the electric push rod only needs a small force in the initial state to quickly deploy the backrest bracket. Push the bed frame back.

The technical solution of the present invention is to provide a back push bed frame with the following structure: it includes

fixed frame;

A backrest bracket, one end of which is rotatably connected to one end of the fixed frame through a rotating shaft, is used to make the backrest bracket rotatable to a folded state or an unfolded state relative to the fixed frame;

The booster bracket is rotatably connected to the fixed frame, and the booster bracket has a booster arm that rotates synchronously with the booster bracket, and the free end of the booster arm is at least in contact with the back of the backrest bracket when the backrest bracket is in a folded state;

The sliding part slides and fits on the fixing frame along the length direction of the fixing frame, and the sliding part is linked with the booster bracket, and when the slider slides, it can drive the booster bracket to rotate;

The electric push rod is arranged between the fixed frame and the backrest bracket, the first end of the electric push rod is hinged with the side of the backrest bracket away from the rotation axis, and the second end of the electric push rod is connected with the sliding part; When the sliding part is driven to slide from the first position to the second position, the sliding part drives the booster bracket to rotate and makes the free end of the booster arm push the backrest bracket, so that the backrest bracket rotates and unfolds from the folded state; when the sliding part stays in the second position At this time, the backrest support can continue to rotate and expand to adjust the inclination angle of the backrest support relative to the fixed mount under the drive of the electric push rod.

After adopting the above structure, the present invention has the following advantages compared with the prior art: when the backrest bracket of the back push bed frame with power assist is unfolded from the folded state, the electric push rod unfolds and drives During the process of sliding the slider from the first position to the second position along the length direction of the fixed frame, due to the linkage connection relationship between the slider and the booster bracket, the slider drives the booster bracket to rotate, so that the booster arm of the booster bracket can move freely. Push the backrest support from the end to make the backrest support rotate and expand from the folded state at a certain angle; when the slider stays at the second position, the backrest support can continue to rotate and expand relative to the fixed frame under the drive of the electric push rod. Therefore, when the electric push rod is unfolded and the sliding part is driven to slide from the first position to the second position, the electric push rod does not directly apply force to the rotation of the backrest bracket, but drives the power-assisted support by driving the horizontal sliding of the sliding part Rotate to make the booster arm of the booster bracket drive the backrest bracket to rotate and first unfold a certain angle. As we all know, when the backrest bracket is in the folded state, due to the small angle between the backrest bracket and the fixed frame, the axis of the electric push rod is close to horizontal or parallel to the plane where the backrest bracket is located or the plane where the fixed frame is located; the electric push rod If the backrest bracket is directly driven to rotate and unfold, a larger force needs to be provided, which requires the power of the electric push rod to be large enough, so that the noise produced will also be very large; and in the present invention, when the backrest bracket is in a folded state, the electric push rod The rod only needs a small force to drive the slider to slide on the fixed frame, so that the linkage power-assisted bracket rotates to expand the backrest bracket at a certain angle. As the angle increases, the electric push rod can drive the backrest bracket to continue to rotate and unfold with only a small force; in other words, when the backrest bracket is unfolded from the folded state, the electric push rod drives the slide to make the power-assisted bracket rotate , the booster arm of the booster bracket provides power assistance to the rotation of the backrest bracket. First, the backrest bracket is unfolded at a certain angle, so that the angle between the axis of the electric push rod and the plane where the backrest bracket is located or the plane where the fixed frame is located becomes larger, and the electric push rod then Directly drives the backrest frame to continue to rotate and unfold, so the electric push rod requires less force in the initial state to quickly deploy the backrest frame; therefore, the power-assisted back push bed frame can use a smaller power electric push rod , when the backrest bracket is unfolded, the noise of the electric push rod is low; moreover, because the electric push rod slides through the driving slider to link the rotation of the booster bracket, the booster arm of the booster bracket provides assistance to the rotation of the backrest bracket to make the backrest bracket in the folded state It can be easily unfolded at a certain angle, so that the electric push rod can drive the backrest bracket to expand; therefore, the angle between the backrest bracket and the fixed frame can be set smaller in the folded state, thereby reducing the packaging volume of the backrest bed frame and saving packaging cost.

Preferably, the free end of the booster arm abuts against the back of the backrest bracket away from the rotation axis when the backrest bracket is in the folded state, and when the slider slides from the first position to the second position and drives the booster bracket to rotate, The free end of the booster arm is always in contact with the back of the back support and rotates towards the direction of the rotation axis of the back support. Arranged in this way, when the slider is driven by the electric push rod to slide from the first position to the second position, the free end of the booster arm pushes the backrest bracket away from the side of the rotation axis, so that the arm of force for the backrest bracket rotation is long and the booster The arm can apply a small force to the backrest bracket to make the backrest bracket rotate and unfold, so the setting of the booster arm makes the electric push rod more labor-saving.

As a preference, two top plates arranged along the length direction of the backrest bracket are connected to the backrest bracket; The booster arms arranged laterally along the rotating rod correspond to the two top boards one by one, and when the backrest bracket is in the folded state, the free ends of the two booster arms are against the backs of the two top boards respectively. The corresponding setting of the two booster arms and the two top plates on the backrest bracket, when the slider is driven by the electric push rod to slide from the first position to the second position so that the backrest bracket is unfolded from the folded state, the free ends of the two booster arms Always slide against the back of the two top panels, allowing for a smoother unfolding of the backrest support.

As a preference, one side of the fixed frame close to the rotating shaft is connected with a fixed seat, and the fixed seat is provided with an elongated sliding hole arranged along the length direction of the fixed frame, and the sliding part is clearance fit in the elongated sliding hole The sliding shaft inside, the end of the elongated sliding hole away from the rotating shaft forms the first position, and the end of the elongated sliding hole close to the rotating shaft forms the second position; the second end of the electric push rod is connected to the The sliding shaft is connected to drive the sliding shaft to slide in the elongated sliding hole; a connecting rod is arranged between the sliding shaft and the booster bracket, the first end of the connecting rod is connected with the sliding shaft, and the second end of the connecting rod is connected with the The booster bracket is connected to drive the booster bracket to rotate when the sliding shaft slides. Arranged like this, when the backrest bracket is in the folded state, the electric push rod is in the retracted state, and the sliding shaft is positioned at the end of the elongated sliding hole away from the rotating shaft, that is, the sliding shaft is positioned at the first position; when the backrest bracket is unfolded from the folded state, When the electric push rod drives the sliding shaft to slide from the first position to the second position of the elongated sliding hole, the sliding shaft rotates through the linkage of the connecting rod with the booster bracket, so that the booster arm of the booster bracket pushes the backrest bracket upwards, making the backrest The bracket rotates and unfolds at a certain angle; when the sliding shaft slides to the end of the elongated sliding hole close to the rotating shaft, that is, when the sliding shaft slides to the second position, the sliding shaft stops sliding and stays at the second position, and when the electric push rod continues to unfold The backrest bracket can be directly driven to rotate relative to the fixed frame. That is to say, when the electric push rod drives the backrest bracket to unfold from the folded state, it is carried out in two steps. The first step is that the sliding shaft slides from the first position to the second position, and the backrest bracket rotates and unfolds at a certain angle, so that the electric push rod and the backrest The included angle of the bracket becomes larger. During this process, the electric push rod does not directly apply thrust to the backrest support; the second step is that the sliding shaft stays at the second position. At this time, the sliding shaft stops sliding and the electric push rod directly applies thrust to the backrest support. , to drive the backrest bracket to rotate; therefore, compared with when the backrest bracket in the prior art is unfolded from the folded state, the electric push rod directly exerts a thrust on the backrest bracket, the electric push rod of the backrest bed frame is more labor-saving.

As a preference, two swing arms protruding laterally along the rotating rod are connected to the rotating rod of the booster bracket; there are two connecting rods, which are respectively arranged on both sides of the sliding shaft, and the second connecting rod of the two connecting rods One end is respectively rotatably connected to the two ends of the sliding shaft, and the second ends of the two connecting rods are respectively rotatably connected to the free ends of the two swing arms. The setting of the swing arm saves more effort when the sliding shaft drives the rotating rod of the booster bracket to rotate.

Preferably, a bottom plate extending along the length direction of the elongated sliding hole is connected to the bottom of the fixing base, two pulleys are connected to the sliding shaft, and the bottoms of the two pulleys are in plane contact with the top of the bottom plate. In this way, when the sliding shaft slides, the frictional resistance is smaller, and it is more convenient for the backrest bracket to be unfolded from the folded state.

Preferably, the aperture size of the end of the elongated sliding hole close to the rotating shaft is smaller than the aperture size of the end of the elongated sliding hole away from the rotating shaft, and the inner wall between the two ends of the elongated sliding hole has a smooth transition. Such setting, that is, when the sliding shaft is in the first position, the gap between the outer wall of the sliding shaft and the inner wall of the elongated sliding hole is large; when the sliding shaft is in the second position, the gap between the outer wall of the sliding shaft and the inner wall of the elongated sliding hole The gap between them is small; when the backrest bracket is in the folded state, the sliding shaft is in the first position of the elongated sliding hole. Driven by a push rod, when sliding from the first position of the long sliding hole to the second position, the resistance is smaller and the sliding is more flexible. In other words, the setting of the long sliding hole makes it easier for the sliding shaft to slide from the first position to the second position. The second position; moreover, the aperture size of the second position of the elongated sliding hole is smaller, and when the sliding shaft stays at the second position, the gap between the sliding shaft and the inner wall of the elongated sliding hole is small, so that when the electric push rod is driven The rotation of the lower sliding shaft is more stable and shake-free.

Preferably, two baffle assemblies are provided on both sides of the backrest bracket, and telescopic assemblies are connected between the two baffle assemblies and the backrest bracket, and the telescopic assemblies are used to adjust the distance between the two baffle assemblies. width between. In this way, the width between the two baffle components can be adjusted, thereby adapting to mattresses of different sizes and widths, and the utility model has good versatility.

Preferably, the baffle assembly includes a support rod arranged along the length direction of the backrest bracket and at least one guard plate connected to the support rod and extending upward; telescopic tubes, the outer ends of the two sets of telescopic tubes are respectively connected to the support rods of the two baffle assemblies; the bottoms on both sides of the backrest bracket are screwed with locking screws, and the inner ends of the locking screws are connected to the ends of the telescopic tubes. The outer walls are offset. In this way, after the length of the telescopic tube is adjusted, it can be locked by the locking screw, so as to better match the width of the mattress.

As a preference, two upwardly extending top blocks are connected to both sides of the top of the end of the fixed frame away from the rotating shaft, and when the backrest bracket is in a folded state, the tops of the two top blocks abut against the bottom of the backrest bracket, Make the backrest bracket and the fixed frame bracket form an included angle. Arranging like this makes when the backrest bracket is in the folded state, there is an angle between the backrest bracket and the fixed mount, and the space formed by the angle is accommodated for electric push rods, controllers, etc.; it is also convenient for the backrest bracket to expand outwards from the folded state.

Another technical solution of the present invention is to provide an electric bed with the following structure: it includes a bed frame, and the bed frame is connected with the power-assisted back push bed frame described in any of the above technical solutions. There are at least two groups of straps connected longitudinally to the bed frame, each group of straps is respectively connected to the bed frame and the fixed frame, and each group of straps is connected to an upwardly extending tail baffle at the end of the bed frame; The frame is connected with at least one set of straps in the transverse direction, and each set of straps is connected with upwardly extending side baffles at the positions on both sides of the bed frame.

After adopting the above structure, compared with the prior art, an electric bed of the present invention has the following advantages: the electric bed is connected with a back push bed frame with power assist on the bed frame, thereby forming an electric bed; and the backrest of the back push bed frame When the bracket is unfolded from the folded state, due to the thrust applied to the slider by the electric push rod in the initial state, the slider will slide, thereby linking the rotation of the booster bracket, and the booster arm of the booster bracket will provide assistance for the rotation of the backrest bracket. The bracket is expanded at a certain angle, so that the angle between the axis of the electric push rod and the plane where the backrest bracket is located or the plane where the fixed frame is located becomes larger, and the electric push rod directly drives the backrest bracket to continue to rotate and expand, so the electric push rod is in the initial state. Only a small force is required to quickly deploy the backrest support; therefore, the backrest bed frame of the electric bed can use a small power electric push rod, and the noise of the electric push rod is low when the backrest support is unfolded; moreover, Since the electric push rod rotates through the sliding linkage of the drive slider, the booster arm of the power support bracket provides assistance to the rotation of the backrest bracket so that the backrest bracket can be easily unfolded at a certain angle in the folded state, thereby facilitating the electric push rod to drive the backrest bracket to unfold; therefore The included angle between the backrest bracket and the fixed frame in the folded state can be set smaller, so that the packaging volume of the backrest bed frame can be reduced and the packaging cost can be saved. Moreover, the setting of the belt on the bed frame makes the connection of the back push bed frame more simple and convenient; and the electric bed can be adapted to mattresses of different widths and sizes, and has good versatility.

Description of drawings

Fig. 1 is a schematic structural view of a back push bed frame with power assist according to the present invention.

Fig. 2 is a structural schematic diagram of another angle of a back push bed frame with power assist in the present invention.

Fig. 3 is a schematic cross-sectional structure diagram of a back push bed frame with power assist according to the present invention.

Fig. 4 is a schematic diagram of the connection structure of the electric push rod of the back push bed frame with power assistance according to the present invention.

Fig. 5 is a structural schematic diagram of a fixing frame of a back push bed frame with power assistance according to the present invention.

Fig. 6 is a structural schematic diagram of a booster bracket of a back push bed frame with booster according to the present invention.

Fig. 7 is a schematic structural view of an electric bed according to the present invention.

Fig. 8 is a structural schematic diagram of another angle of an electric bed according to the present invention.

as the picture shows:

1, fixed frame, 100, rotating shaft, 101, the first rod, 102, the second rod, 103, rotating seat, 104, fixed seat, 105, elongated sliding hole, 106, base plate, 107, top block, 108, sliding shaft, 109, pulley, 2, backrest bracket, 200, top plate, 3, electric push rod, 300, hinged seat, 4, booster bracket, 400, rotating rod, 401, booster arm, 402, sliding sleeve, 403, swing arm, 404, connecting rod, 405, rotating sleeve, 5, controller, 6, baffle assembly, 600, support rod, 601, guard plate, 602, telescopic tube, 603, locking screw, 7, bed Frame, 8, bed leg, 9, tail baffle, 900, side baffle, 10, drawstring.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

See Figures 1 to 6;

The embodiment of the present invention discloses a back push bed frame with power assistance, which is used to be installed on the bed frame of an ordinary bed, and the ordinary bed is composed of a bed frame and bed legs installed at the bottom of the bed frame; the back push bed The structure of the frame includes a fixed frame 1 and a backrest bracket 2; one end of the backrest bracket 2 and one end of the fixed frame 1 are rotatably connected through a rotating shaft 100, so that the backrest bracket 2 can be rotated to a folded state or an unfolded state relative to the fixed frame 1 ; In the present embodiment, the fixed mount 1 and the backrest bracket 2 are all surrounded by steel rods into a U shape, and the two free ends of the backrest bracket 2 are respectively located at the outer sides of the two free ends of the fixed mount 1 and the two free ends of the backrest bracket 2 The two free ends of the fixed frame 1 are rotatably connected by the rotating shaft 100, and the top and both sides of the end of the fixed frame 1 away from the rotating shaft 100 are connected with two top blocks 107 extending upwards. When the backrest bracket 2 is in a folded state, the The tops of the two jacking blocks 107 abut against the bottom of the backrest bracket 2, so that the backrest bracket 2 forms an included angle with the bracket of the fixed frame 1 . And in this embodiment, two top boards 200 arranged along the lengthwise direction of backrest bracket 2 are connected on the backrest bracket 2, there is a gap between the two top boards 200, and the top board 200 and the backrest bracket 2 are welded and fixed, and the two top boards The back of the 200 is set smoothly and on the same plane.

The back push bed frame with booster of the present embodiment also comprises booster bracket 4, slide piece, controller 5 and electric push rod 3, and booster bracket 4 is rotatably connected on the fixed frame 1, and booster bracket 4 has with booster bracket 4 The booster arm 401 that rotates synchronously, the free end of the booster arm 401 abuts against the back of the backrest bracket 2 at least when the backrest bracket 2 is in the folded state; in this embodiment, the booster bracket 4 includes Set and rotate the rotating rod 400 connected on the fixed frame 1, the rotating rod 400 is connected with two booster arms 401 arranged transversely along the rotating rod 400, the two booster arms 401 and the two top plates on the backrest support 2 200 are in one-to-one correspondence, and when the back support 2 is in the folded state, the free ends of the two booster arms 401 are respectively against the backs of the two top boards 200 . The sliding part slides and fits on the fixed frame 1 along the length direction of the fixed frame 1, and the sliding part is linked with the booster bracket 4. When the slider slides, it can drive the booster bracket 4 to rotate; the electric push rod 3 is arranged on the fixed frame 1 and the backrest Between the brackets 2, the first end of the electric push rod 3 is hinged with the hinged seat 300 on the side of the backrest bracket 2 away from the rotating shaft 100, and the second end of the electric push rod 3 is connected with the slider; 3. When the sliding part is driven to slide from the first position to the second position, the sliding part drives the booster bracket 4 to rotate and makes the free end of the booster arm 401 push the backrest bracket 2, so that the backrest bracket 2 rotates and expands from the folded state to a certain angle; when When the slider stays at the second position, the back support 2 can continue to rotate and expand relative to the fixed frame 1 under the drive of the electric push rod 3 to adjust the inclination angle of the back support 2 . The controller 5 is installed on the fixed frame 1, and the controller 5 is electrically connected with the electric push rod 3 for controlling the action of the electric push rod 3, and the controller 5 is electrically connected with an external power supply through a power connection.

In this embodiment, when the backrest bracket 2 of the back push bed frame with power assistance is unfolded from the folded state, the electric push rod 3 unfolds and drives the slider to slide from the first position to the second position along the length direction of the fixed frame 1. In the process, due to the linkage connection relationship between the slider and the booster bracket 4, the slider drives the booster bracket 4 to rotate, so that the free end of the booster arm 401 of the booster bracket 4 pushes the backrest bracket 2, so that the backrest bracket 2 can be moved from the folded state. Rotate and unfold at a certain angle; when the slider stays at the second position, the backrest bracket 2 can continue to rotate and unfold relative to the fixed frame 1 under the drive of the electric push rod 3 . Therefore, when the electric push rod 3 is unfolded and the sliding member is driven to slide from the first position to the second position, the electric push rod 3 does not directly apply an active force to the rotation of the backrest bracket 2, but by driving the sliding member to horizontally slide. Drive the booster bracket 4 to rotate, so that the booster arm 401 of the booster bracket 4 drives the backrest bracket 2 to rotate and first unfold a certain angle. As we all know, when the backrest bracket 2 is in the folded state, since the angle between the backrest bracket 2 and the fixed frame 1 is small, the axis of the electric push rod 3 and the plane where the backrest bracket 2 is located or the plane where the fixed bracket 1 is located are close to horizontal Or parallel; if the electric push rod 3 directly drives the backrest bracket 2 to rotate and unfold, it needs to provide a larger force, which requires the power of the electric push rod 3 to be large enough, so that the noise produced will be very large; and in the present invention, in When the backrest bracket 2 is in the folded state, the electric push rod 3 can drive the slider to slide on the fixed frame 1 with only a small force, so that the linkage assist bracket 4 rotates to make the backrest bracket 2 unfold at a certain angle. At this time, the electric push rod 3 The angle between the axis and the plane where the backrest bracket 2 is located or the plane where the fixed bracket 1 is located increases, and the electric push rod 3 can drive the backrest bracket 2 to continue to rotate and unfold with only a small force; in other words, the backrest bracket 2 When unfolding from the folded state, the electric push rod 3 drives the sliding part to slide to make the booster bracket 4 rotate, and the booster arm 401 of the booster bracket 4 provides assistance for the rotation of the backrest bracket 2. The angle between the axis of the push rod 3 and the plane where the backrest bracket 2 is located or the plane where the fixed frame 1 is located becomes larger, and the electric push rod 3 directly drives the backrest bracket 2 to continue to rotate and expand, so the electric push rod 3 only needs to move in the initial state. The backrest bracket 2 can be quickly deployed with less force; therefore, the backrest bed frame with power assistance can use a smaller power electric push rod 3, and the noise of the electric push rod 3 is low when the backrest bracket 2 is unfolded; Furthermore, since the electric push rod 3 rotates through the sliding linkage of the driving slide and the power-assisted bracket 4, the booster arm 401 of the power-assisted bracket 4 provides power assistance to the rotation of the backrest bracket 2 so that the backrest bracket 2 can be easily unfolded at a certain angle in the folded state, thereby facilitating The electric push rod 3 drives the backrest bracket 2 to unfold; therefore, the angle between the backrest bracket 2 and the fixed frame 1 in the folded state can be set smaller, thereby reducing the packaging volume of the backrest bed frame and saving packaging costs.

Referring to Fig. 1 or Fig. 3 again, as an embodiment of the present invention; the free end of the booster arm 401 abuts against the back of the top plate 200 on the backrest support 2 away from the side of the rotation axis 100 when the backrest support 2 is in the folded state , and when the slider slides from the first position to the second position and drives the booster bracket 4 to rotate, the free end of the booster arm 401 is always in contact with the back of the top plate 200 of the backrest bracket 2 and rotates toward the direction close to the rotation axis 100 of the backrest bracket 2 . When the slider is driven by the electric push rod 3 to slide from the first position to the second position, the free end of the booster arm 401 pushes the top plate 200 away from the side of the rotation shaft 100, so that the arm of force for the rotation of the backrest bracket 2 is long and helps The push arm 401 applies a small force to the backrest bracket 2 to rotate and unfold the backrest bracket 2, so the setting of the booster arm 401 makes the electric push rod 3 more labor-saving.

Referring again to Figures 4 to 6, as an embodiment of the present invention; the side of the fixed frame 1 close to the rotating shaft 100 is connected with a first rod 101 parallel to the axis of the rotating shaft 100, and the first rod 101 The central position is connected with a fixed seat 104, the fixed seat 104 is provided with an elongated sliding hole 105 arranged along the length direction of the fixed frame 1, and the sliding part is a sliding shaft 108 that is clearance fit in the elongated sliding hole 105, so The end of the elongated sliding hole 105 away from the rotating shaft 100 forms the first position, and the end of the elongating sliding hole 105 near the rotating shaft 100 forms the second position; Two second rods 102 arranged along the length direction of the fixed frame 1 are connected between the walls, and the two second rods 102 are symmetrically provided with two rotating seats 103 with openings facing upwards. In this embodiment, the booster bracket 4 includes a rotating rod 400 arranged along the width direction of the fixed frame 1 and rotatably connected to the fixed frame 1. The rotating rod 400 is connected to two booster arms 401 arranged laterally along the rotating rod 400 , the two booster arms 401 correspond to the two top boards 200 one by one, and when the backrest support 2 is in the folded state, the free ends of the two booster arms 401 are respectively against the backs of the two top boards 200 . Further, the two ends of the rotating rod 400 are covered with rotating sleeves 405, and the rotating sleeves 405 at both ends of the rotating rod 400 are clearance fit in the two rotating seats 103 on the two second rods 102, and the rotating sleeves 405 are used to reduce the rotation. The friction between the two ends of the rod 400 and the inner wall of the rotating seat 103 can avoid shaking between the two ends of the rotating rod 400 and the inner wall of the rotating seat 103, making the rotation of the rotating rod 400 more stable; the free ends of the two booster arms 401 The sliding sleeve 402 is sleeved, and the surface of the sliding sleeve 402 is smooth, which can reduce the friction force between the two and reduce the noise during sliding when the back surface of the top plate 200 is offset; the sliding sleeve 402 and the rotating sleeve 405 of the present embodiment can Made of plastic or rubber.

In this embodiment, when the backrest bracket 2 is in the folded state, the electric push rod 3 is in the contracted state, and the sliding shaft 108 is located at the end of the elongated sliding hole 105 away from the rotating shaft 100, that is, the sliding shaft 108 is located at the first position; When the backrest bracket 2 is unfolded from the folded state, the electric push rod 3 drives the sliding shaft 108 to slide from the first position of the elongated sliding hole 105 to the second position, and the sliding shaft 108 rotates through the connecting rod 404 in conjunction with the booster bracket 4, Thereby, the booster arm 401 of the booster bracket 4 pushes the backrest bracket 2 upwards, so that the backrest bracket 2 is rotated and unfolded at a certain angle; When reaching the second position, the sliding shaft 108 stops sliding and stays at the second position, and when the electric push rod 3 continues to unfold, it can directly drive the backrest bracket 2 to rotate relative to the fixed frame 1 . That is to say, when the electric push rod 3 drives the backrest bracket 2 to expand from the folded state, it is carried out in two steps. The first step is that the sliding shaft 108 slides from the first position to the second position, and the backrest bracket 2 rotates and unfolds at a certain angle, so that the electric push rod The included angle between the push rod 3 and the backrest bracket 2 becomes larger. During this process, the electric push rod 3 does not directly apply thrust to the backrest bracket 2; the second step is that the sliding shaft 108 stays at the second position, and at this time, the sliding shaft 108 stops sliding And the electric push rod 3 directly applies a thrust to the backrest bracket 2 to drive the backrest bracket 2 to rotate; The electric push rod 3 of the back push bed frame is more labor-saving.

Referring again to Fig. 4, the second end of the electric push rod 3 is connected to the sliding shaft 108 for driving the sliding shaft 108 to slide in the elongated sliding hole 105; a connecting rod 404 is arranged between the sliding shaft 108 and the booster bracket 4 , the first end of the connecting rod 404 is connected to the sliding shaft 108, and the second end of the connecting rod 404 is connected to the booster bracket 4, so as to drive the booster bracket 4 to rotate when the sliding shaft 108 slides. Further, the rotating rod 400 of the booster bracket 4 is connected with two swing arms 403 protruding laterally along the rotating rod 400; The first ends of the two connecting rods 404 are rotatably connected to the two ends of the sliding shaft 108 through the pins respectively, and the second ends of the two connecting rods 404 are respectively rotatably connected to the free ends of the two swing arms 403 through the pins. As another embodiment of the present invention, in order to make the sliding shaft 108 slide, the friction resistance is smaller, and it is more convenient for the backrest bracket 2 to be unfolded from the folded state. Two pulleys 109 are connected on the sliding shaft 108, and the bottoms of the two pulleys 109 are in contact with the top plane of the bottom plate 106. When the sliding shaft 108 slides in the elongated sliding hole 105 like this, the pulley 109 slides or rolls on the bottom plate 106 .

Referring again to Fig. 5, as an embodiment of the present invention; the aperture size of the elongated sliding hole 105 near the end of the rotating shaft 100 is smaller than the aperture size of the elongated sliding hole 105 away from the end of the rotating shaft 100, and the elongated sliding hole 105 The inner wall transitions smoothly between the ends. Such setting, that is, when the sliding shaft 108 is in the first position, the gap between the outer wall of the sliding shaft 108 and the inner wall of the elongated sliding hole 105 is large; The gap between the inner walls of the sliding holes 105 is small; when the back support 2 was in the folded state, the sliding shaft 108 was in the first position of the elongated sliding holes 105, and at this moment due to the outer wall of the sliding shaft 108 and the inner wall of the elongated sliding holes 105 The gap between them is large. When the sliding shaft 108 is driven by the electric push rod 3 and slides from the first position of the elongated sliding hole 105 to the second position, the resistance is smaller and the sliding is more flexible. In other words, the elongated sliding hole Such setting of 105 makes it easier for the sliding shaft 108 to slide from the first position to the second position; moreover, the aperture size of the second position of the elongated sliding hole 105 is smaller, and when the sliding shaft 108 stays in the second position, the sliding shaft 108 The gap with the inner wall of the elongated sliding hole 105 is small, so that the rotation of the sliding shaft 108 is more stable without shaking under the drive of the electric push rod 3 .

Referring again to Fig. 1 or Fig. 2, it is an embodiment of the present invention; in order to make the back push bed frame with power assist fit mattresses of different sizes and widths, it has good versatility. Two baffle assemblies 6 are arranged on both sides of the backrest bracket 2, and telescopic assemblies are connected between the two baffle assemblies 6 and the backrest bracket 2, and the telescopic assemblies are used to adjust the distance between the two baffle assemblies 6. width. Specifically, in this embodiment, the baffle assembly 6 includes a support rod 600 arranged along the length direction of the backrest bracket 2 and at least one guard plate 601 connected to the support rod 600 and extending upward; both sides of the backrest bracket 2 are connected Two groups of telescopic tubes 602 arranged along the width direction of the backrest bracket 2, the outer ends of the two groups of telescopic tubes 602 are respectively connected with the support rods 600 of the two baffle plate assemblies 6; Tighten the screw 603, and the inner end of the locking screw 603 is against the outer wall of the telescopic tube 602. The width between the two baffle assemblies 6 can be adjusted in this way. After the length of the telescopic tube 602 is adjusted, it can be locked by the locking screw 603, so as to better match the width of the mattress. In other embodiments, the telescopic assembly may also be a three-section slide rail, a folding bracket, and the like.

Referring to Fig. 7 and Fig. 8, another embodiment of the present invention discloses an electric bed, which includes a bed frame 7 and a bed leg 8 connected to the bottom of the bed frame 7, and the bed frame 7 is connected with any of the above-mentioned implementations. The back push bed frame with power assist described in the example. There are at least two groups of straps 10 connected longitudinally to the bed frame 7, each group of straps 10 is connected to the bed frame 7 and the fixed frame 1 respectively, and each group of straps 10 is connected to an upwardly extending tail stop at the end of the bed frame 7. Board 9 ; at least one set of straps 10 is connected laterally to the bed frame 7 , and each set of straps 10 is connected to side baffles 900 extending upwards at the positions on both sides of the bed frame 7 . The electric bed is connected with a push-back bed frame with power assist on the bed frame 7 to form an electric bed; The thrust of the sliding part makes the sliding part slide, so that the linkage booster bracket 4 rotates, and the booster arm 401 of the booster bracket 4 provides power assistance for the rotation of the backrest bracket 2. The angle between the plane where the bracket 2 is located or the plane where the fixed bracket 1 is located becomes larger, and the electric push rod 3 directly drives the backrest bracket 2 to continue to rotate and unfold, so the electric push rod 3 only needs a small force in the initial state The backrest support 2 is rapidly deployed; therefore, the electric push rod 3 with a lower power can be used for the back push bed frame of the electric bed, and the noise of the electric push rod 3 is low when the backrest support 2 is deployed; moreover, due to the electric push rod 3. By driving the slider to slide and link the booster bracket 4 to rotate, the booster arm 401 of the booster bracket 4 provides assistance to the rotation of the backrest bracket 2 so that the backrest bracket 2 can be easily unfolded at a certain angle when it is in the folded state, thereby facilitating the electric push rod 3 to drive the backrest bracket 2 unfolded; therefore, the angle between the backrest bracket 2 and the fixed frame 1 in the folded state can be set smaller, thereby reducing the packaging volume of the backrest bed frame and saving packaging costs. Moreover, the setting of the belt 10 on the bed frame 7 makes the connection of the back push bed frame more simple and convenient; and the electric bed can be adapted to mattresses of different widths and sizes, and has good versatility.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (12)

1. The utility model provides a take back of body of helping hand to push away bedstead which characterized in that: it comprises

A fixed mount;

one end of the backrest support is rotatably connected with one end of the fixing frame through a rotating shaft, and the backrest support can rotate to a folded state or an unfolded state relative to the fixing frame;

the boosting support is rotatably connected to the fixing frame and provided with a boosting arm which synchronously rotates along with the boosting support, and the free end of the boosting arm is abutted against the back surface of the backrest support at least when the backrest support is in a folded state;

the sliding part is matched on the fixing frame in a sliding manner along the length direction of the fixing frame, and is in linkage connection with the power-assisted support;

the electric push rod is arranged between the fixed frame and the backrest support, the first end of the electric push rod is hinged with one side, away from the rotating shaft, of the backrest support, and the second end of the electric push rod is connected with the sliding piece; when the electric push rod drives the sliding piece to slide from the first position to the second position, the sliding piece drives the boosting support to rotate and enables the free end of the boosting arm to push against the back support, and the back support is enabled to rotate and unfold from a folded state; when the sliding piece stays at the second position, the backrest bracket can be continuously rotated and unfolded relative to the fixed frame under the driving of the electric push rod so as to adjust the inclination angle of the backrest bracket.

2. The back-push bed frame with power assisting of claim 1, which is characterized in that: when the backrest support is in a folded state, the free end of the boosting arm is abutted against the back face of the backrest support on the side far away from the rotating shaft, and when the sliding piece slides from the first position to the second position and drives the boosting support to rotate, the free end of the boosting arm is always in contact with the back face of the backrest support and rotates towards the direction close to the rotating shaft of the backrest support.

3. The back-push bed frame with power assisting of claim 2, wherein: the backrest support is connected with two top plates arranged along the length direction of the backrest support; the power assisting support comprises a rotating rod which is arranged along the width direction of the fixing frame and is rotatably connected to the fixing frame, two power assisting arms which are transversely arranged along the rotating rod are connected to the rotating rod, the two power assisting arms correspond to the two top plates one to one, and when the backrest support is in a folded state, the free ends of the two power assisting arms respectively abut against the back surfaces of the two top plates.

4. The back-push bed frame with power assistance according to any one of claims 1 to 3, wherein: one side of the fixed frame, which is close to the rotating shaft, is connected with a fixed seat, the fixed seat is provided with a long sliding hole which is arranged along the length direction of the fixed frame, the sliding part is a sliding shaft which is in clearance fit in the long sliding hole, one end of the long sliding hole, which is far away from the rotating shaft, forms the first position, and one end of the long sliding hole, which is close to the rotating shaft, forms the second position; the second end of the electric push rod is connected with the sliding shaft and used for driving the sliding shaft to slide in the long sliding hole; and a connecting rod is arranged between the sliding shaft and the power-assisted support, the first end of the connecting rod is connected with the sliding shaft, and the second end of the connecting rod is connected with the power-assisted support and is used for driving the power-assisted support to rotate when the sliding shaft slides.

5. The back-push bed frame with power assistance of claim 4, wherein: the rotating rod of the power-assisted bracket is connected with two swing arms which protrude outwards transversely along the rotating rod; the two connecting rods are respectively arranged on two sides of the sliding shaft, the first ends of the two connecting rods are respectively rotatably connected with two ends of the sliding shaft, and the second ends of the two connecting rods are respectively rotatably connected with free ends of the two swing arms.

6. The back-push bed frame with power assistance of claim 5, wherein: the bottom of fixing base is connected with the bottom plate that extends along microscler slide opening length direction, connect two pulleys on the sliding shaft, the bottom of two pulleys and the top plane contact of bottom plate.

7. The back-push bed frame with power assistance of claim 4, wherein: the aperture size of one end, close to the rotating shaft, of the long sliding hole is smaller than that of the other end, far away from the rotating shaft, of the long sliding hole, and the inner wall between the two ends of the long sliding hole is in smooth transition.

8. The back-push bed frame with power assistance of claim 1, wherein: two sides of the backrest support are provided with two baffle assemblies, telescopic assemblies are connected between the two baffle assemblies and the backrest support, and the telescopic assemblies are used for adjusting the width between the two baffle assemblies.

9. The back-push bed frame with power assistance of claim 8, wherein: the baffle plate assembly comprises a support rod and at least one guard plate, wherein the support rod is arranged along the length direction of the backrest support, and the guard plate is connected to the support rod and extends upwards; two sides of the backrest support are connected with two groups of telescopic pipes arranged along the width direction of the backrest support, and the outer ends of the two groups of telescopic pipes are respectively connected with the supporting rods of the two baffle plate assemblies; the bottom of the two sides of the backrest support is in threaded connection with locking screws, and the inner ends of the locking screws are abutted to the outer side wall of the telescopic pipe.

10. The back-push bed frame with power assistance of claim 1, wherein: the top both sides that the axis of rotation was kept away from to the mount one end are connected with two kicking blocks that upwards extend the setting, and when back support was in fold condition, the top of two kicking blocks supported with back support's bottom, made back support and mount support be formed with the contained angle.

11. An electric bed, which comprises a bed frame and is characterized in that: the frame is connected with the back-pushing bed frame with power assistance as claimed in any one of claims 1 to 10.

12. A beddo according to claim 11 wherein: at least two groups of binding belts are longitudinally connected with the bedstead, each group of binding belts are respectively connected with the bedstead and the fixed frame, and the part of each group of binding belts at the tail part of the bedstead is connected with a tail baffle plate extending upwards; the bed frame is transversely connected with at least one group of bridles, and the parts of each group of bridles, which are positioned at the two sides of the bed frame, are connected with side baffles which extend upwards.

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