WO2024040715A1 - 一种带助力的背推床架及电动床 - Google Patents

一种带助力的背推床架及电动床 Download PDF

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Publication number
WO2024040715A1
WO2024040715A1 PCT/CN2022/124990 CN2022124990W WO2024040715A1 WO 2024040715 A1 WO2024040715 A1 WO 2024040715A1 CN 2022124990 W CN2022124990 W CN 2022124990W WO 2024040715 A1 WO2024040715 A1 WO 2024040715A1
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WO
WIPO (PCT)
Prior art keywords
bracket
power
backrest bracket
backrest
bed frame
Prior art date
Application number
PCT/CN2022/124990
Other languages
English (en)
French (fr)
Inventor
项乐宏
杨桂兵
胡蒙旭
Original Assignee
乐歌人体工学科技股份有限公司
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Application filed by 乐歌人体工学科技股份有限公司 filed Critical 乐歌人体工学科技股份有限公司
Publication of WO2024040715A1 publication Critical patent/WO2024040715A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C19/00—Bedsteads
    • A47C19/02—Parts or details of bedsteads not fully covered in a single one of the following subgroups, e.g. bed rails, post rails
    • A47C19/021—Bedstead frames
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C19/00—Bedsteads
    • A47C19/22—Combinations of bedsteads with other furniture or with accessories, e.g. with bedside cabinets

Definitions

  • the invention relates to the technical field of furniture equipment, and specifically relates to a push-back bed frame and an electric bed with a power assist.
  • the structure of the electric bed in the prior art includes a bed frame, bed legs, and a backrest bracket and a leg bracket connected to the bed frame.
  • One end of the backrest bracket is hinged to the leg bracket, and a driveable device is connected between the backrest bracket and the bed frame.
  • the drive motor that rotates the backrest bracket; this electric bed can adjust the user's sleeping, lying, sitting and other postures to relieve fatigue, so it is very popular among users.
  • the electric bed frame is generally configured independently.
  • the electric bed frame is also called a back push bed frame, that is, the user only needs to purchase a back push bed frame, and then
  • the ordinary bed can be turned into an electric bed by placing the push-back bed frame on the bed frame of an ordinary bed.
  • the structure of the existing push-back bed frame includes a fixed frame and a backrest bracket.
  • the fixed frame is placed on the bed frame and fixed to the bed frame.
  • One end of the backrest bracket is rotatably connected to one end of the fixed frame, so that the backrest bracket is fixed relative to the bed frame.
  • the frame can rotate around the rotation axis; there is an electric push rod 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. When the electric push rod expands or contracts, it can Drive the backrest bracket rotation angle.
  • the thickness of the back push bed frame in the folded state is designed to be as small as possible.
  • the ideal state is when the fixed frame and backrest bracket are fully folded. The angle between the latter two is zero or close to zero.
  • the electric push rod between the fixed frame and the backrest bracket is generally in a horizontal state or close to horizontal.
  • the user When actually using the backrest bracket, the user usually assists the backrest bracket to rotate and unfold, which is very troublesome to operate. Therefore, after the backrest bracket and the fixed frame of most push-back 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 unfold the backrest bracket in the initial state. , but even so, the electric push rod must use greater force to unfold the backrest bracket due to the small tilt angle in the initial state.
  • the width of the existing push-back bed frame is fixed after production, that is, a push-back bed frame is only suitable for mattresses of one width, which has poor versatility and cannot meet the needs of users.
  • the technical problem to be solved by the present invention is to overcome the above defects of the prior art and provide a power-assisted bicycle with small packaging volume and in which the electric push rod can quickly deploy the backrest bracket with only a small force in the initial state.
  • Back push bed frame
  • the technical solution of the present invention is to provide a power-assisted back push bed frame with the following structure: it includes
  • the backrest bracket one end of which is rotatably connected to one end of the fixed frame through a rotating shaft, is used to allow the backrest bracket to rotate relative to the fixed frame to a folded state or an unfolded state;
  • the power-assist bracket is rotatably connected to the fixed frame, and the power-assist bracket has a booster arm that rotates synchronously with the power-assist bracket, and the free end of the booster arm is against the back of the backrest bracket at least when the backrest bracket is in a folded state;
  • the sliding part is slidably fitted on the fixed frame along the length direction of the fixed frame.
  • the sliding part is linked with the power-assisted bracket and can drive the power-assisted bracket to rotate when the sliding part slides;
  • 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 to the sliding member; in the electric push rod
  • the slider drives the booster bracket to rotate and causes the free end of the booster arm to push the backrest bracket, causing the backrest bracket to rotate and unfold from the folded state; when the slider stays in the second position
  • the backrest bracket is driven by the electric push rod, it can continue to rotate and expand relative to the fixed frame to adjust the inclination angle of the backrest bracket.
  • the power-assisted back push bed frame of the present invention has the following advantages compared with the existing technology: when the backrest bracket of the power-assisted back push bed frame is unfolded from the folded state, the electric push rod is unfolded and driven When the sliding part slides from the first position to the second position along the length direction of the fixed frame, due to the linkage connection between the sliding part and the power-assist bracket, the sliding part drives the power-assist bracket to rotate, thereby freeing the boost arm of the power-assist bracket.
  • the backrest bracket when the backrest bracket is in a folded state, because the angle between the backrest bracket and the fixed frame is small, 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 large force needs to be provided, which requires the power of the electric push rod to be large enough, and the noise generated will also be very loud; 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 sliding part to slide on the fixed frame, thereby linking the power-assisted bracket to rotate so that the backrest bracket expands to a certain angle.
  • the axis of the electric push rod is sandwiched between the plane of the backrest bracket or the plane of the fixed bracket.
  • the angle increases, and the electric push rod only needs to use less force to drive the backrest bracket to continue to rotate and unfold; in other words, when the backrest bracket is unfolded from the folded state, the electric pushrod drives the sliding member to slide to rotate the power-assist bracket.
  • the boost arm of the power-assisted bracket provides assistance for the rotation of the backrest bracket.
  • the backrest bracket is expanded to 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 bracket is located becomes larger, and the electric push rod then
  • the backrest bracket is directly driven to continue to rotate and expand, so the electric actuator requires only a small force to quickly expand the backrest bracket in the initial state; therefore, this back push bed frame with power assist can use a smaller power electric actuator.
  • the boost arm of the power boost bracket provides assistance to the rotation of the back support bracket, so that the backrest bracket is in the folded state It can be easily unfolded to a certain angle, which facilitates the electric push rod to drive the backrest bracket to unfold; therefore, the angle between the backrest bracket and the fixed frame in the folded state can be set smaller, thereby reducing the packaging volume of the back push bed frame and saving packaging. cost.
  • the free end of the booster arm abuts against the back of the backrest bracket away from the rotation axis, 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 backrest bracket and rotates in a direction close to the rotation axis of the backrest bracket.
  • the backrest bracket is connected to two top plates arranged along the length direction of the backrest bracket;
  • the power-assist bracket includes a rotating rod arranged along the width direction of the fixed frame and rotatably connected to the fixed frame, and the rotating rod is connected to two
  • booster arms arranged transversely along the rotating rod.
  • the two booster arms correspond to the two top plates one by one.
  • the backrest bracket is in the folded state, the free ends of the two booster arms offset the back sides of the two top plates respectively.
  • the two booster arms are correspondingly arranged with the two top plates on the backrest bracket.
  • the side of the fixed frame close to the rotation axis is connected to a fixed base.
  • the fixed base is provided with an elongated sliding hole arranged along the length direction of the fixed frame.
  • the sliding member is a 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 sliding shaft.
  • the sliding shaft connection is used to drive the sliding shaft to slide in the elongated sliding hole; a connecting rod is provided between the sliding shaft and the power assist bracket, the first end of the connecting rod is connected to the sliding shaft, and the second end of the connecting rod is connected to the sliding shaft.
  • the power-assist bracket is connected to drive the power-assist bracket to rotate when the sliding shaft slides.
  • the sliding shaft is located at the end of the elongated sliding hole away from the rotation axis, that is, the sliding shaft is in the first position; when the backrest bracket is unfolded from the folded state,
  • 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 connecting rod linkage of the power-assist bracket, so that the boost arm of the power-assist bracket pushes the backrest bracket upward, making the backrest
  • the bracket rotates and expands to a certain angle; when the sliding shaft slides to the end of the long 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 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 proceeds in two steps.
  • the first step is to slide the sliding shaft from the first position to the second position, and the backrest bracket rotates and expands to a certain angle, so that the electric push rod is in contact with the backrest. The angle between the brackets becomes larger.
  • the electric push rod does not directly exert thrust on the backrest bracket;
  • the second step is for the sliding shaft to stay in the second position.
  • the sliding shaft stops sliding and the electric push rod directly exerts thrust on the backrest bracket. drives the backrest bracket to rotate; therefore, compared with the prior art in which the electric pushrod directly applies thrust to the backrest bracket when the backrest bracket is unfolded from the folded state, the electric pushrod of the back push bed frame is more labor-saving.
  • the rotating rod of the power-assist bracket is connected with two swing arms that protrude laterally along the rotating rod; there are two connecting rods, and they are respectively arranged on both sides of the sliding shaft, and the third of the two connecting rods One end is rotatably connected to the two ends of the sliding shaft, and the second ends of the two connecting rods are rotatably connected to the free ends of the two swing arms.
  • the setting of the swing arm makes it more labor-saving when the sliding shaft drives the rotating rod of the power-assist bracket to rotate.
  • the bottom of the fixed seat is connected to a bottom plate extending along the length direction of the elongated sliding hole.
  • 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.
  • the aperture size of the end of the elongated sliding hole close to the rotation axis is smaller than the aperture size of the end of the elongated sliding hole away from the rotation axis, and the inner wall between the two ends of the elongated sliding hole has a smooth transition. It is arranged in this way, 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 is large. 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.
  • the sliding shaft is electrically driven Driven by a push rod, when sliding from the first position to the second position of the elongated sliding hole, the resistance is smaller and the sliding is more flexible.
  • the elongated sliding hole is set up in this way to make it easier for the sliding shaft to slide from the first position to the second position. second position; furthermore, the aperture size of the second position of the elongated sliding hole is smaller.
  • 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.
  • the telescopic assemblies are used to adjust one of the two baffle assemblies.
  • the width of the space can adjust the width between the two baffle components, thereby adapting to mattresses of different sizes and widths, and has good versatility.
  • 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; two groups of two sets of protective plates arranged along the width direction of the backrest bracket are connected to both sides of the backrest bracket.
  • 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 threadedly connected with locking screws, and the inner ends of the locking screws are connected to the telescopic tubes.
  • the outer walls touch each other.
  • two upwardly extending top blocks are connected to both sides of the top of the end of the fixed frame away from the rotation axis.
  • the backrest bracket When the backrest bracket is in a folded state, the tops of the two top blocks are in contact with the bottom of the backrest bracket. Make the backrest bracket and the fixed frame bracket form an included angle.
  • This arrangement allows the backrest bracket to be in a folded state, and there is an included angle between the backrest bracket and the fixed frame.
  • the space formed by the included angle is used to accommodate the electric push rod, controller, etc.; it also facilitates the unfolding of the backrest bracket 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 to the back push bed frame with power assist described in any of the above technical solutions.
  • the bed frame is longitudinally connected with at least two sets of straps, each set of straps is connected to the bed frame and the fixed frame respectively, and each set of straps is connected to an upwardly extending tail baffle at the end of the bed frame; the bed At least one set of straps is connected transversely to the frame, and the parts of each set of straps located on both sides of the bed frame are connected to upwardly extending side baffles.
  • the electric bed of the present invention has the following advantages compared with the prior art: the electric bed is connected to the bed frame with a back push bed frame with a power assist, thereby forming an electric bed; and the backrest of the back push bed frame is
  • the bracket is unfolded from the folded state, the thrust exerted by the electric push rod on the sliding part in the initial state causes the sliding part to slide, thereby linking the power-assisted bracket to rotate.
  • the boost arm of the power-assisted bracket provides assistance to the rotation of the backrest bracket.
  • the backrest is first moved The bracket expands to 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 bracket is located becomes larger.
  • 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 needed to quickly expand the backrest bracket; therefore, the back pusher bed frame of this electric bed can use a smaller power electric pushrod.
  • the boost arm of the power-assisted bracket provides assistance to the rotation of the backrest bracket, so that the backrest bracket can be easily expanded to a certain angle when it is folded, thereby making it easier for the electric pushrod to drive the backrest bracket to unfold; therefore,
  • the angle between the backrest bracket and the fixed frame in the folded state can be set smaller, thereby reducing the packaging volume of the back push bed frame and saving packaging costs.
  • the setting of the straps on the bed frame makes the connection of the push-back bed frame simpler and more convenient; and the electric bed can be adapted to mattresses of different widths and sizes, and has good versatility.
  • Figure 1 is a schematic structural diagram of a back push bed frame with power assist according to the present invention.
  • Figure 2 is a schematic structural diagram of a back push bed frame with power assist according to the present invention from another angle.
  • Figure 3 is a schematic cross-sectional structural diagram of a back push bed frame with power assist according to the present invention.
  • Figure 4 is a schematic diagram of the connection structure of the electric push rod of the back push bed frame with power assist according to the present invention.
  • Figure 5 is a schematic structural diagram of a fixed frame of a power-assisted back push bed frame according to the present invention.
  • Figure 6 is a schematic structural diagram of a power-assisted support bracket of a power-assisted back push bed frame according to the present invention.
  • Figure 7 is a schematic structural diagram of an electric bed according to the present invention.
  • Figure 8 is a schematic structural diagram of an electric bed according to the present invention from another angle.
  • An embodiment of the present invention discloses a push-back bed frame with a power assist, which is used to be installed on the bed frame of an ordinary bed, that is, an 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 rotate relative to the fixed frame 1 to a folded state or an unfolded state.
  • the fixed frame 1 and the backrest bracket 2 are both surrounded by steel rods in a U shape.
  • the two free ends of the backrest bracket 2 are respectively located outside the two free ends of the fixed frame 1 and the two free ends of the backrest bracket 2.
  • the two free ends of the fixed frame 1 are rotationally connected through the rotating shaft 100.
  • Two upwardly extending top blocks 107 are connected to both sides of the top of the end of the fixed frame 1 away from the rotating shaft 100.
  • the backrest bracket 2 is in the folded state, the The tops of the two top blocks 107 are against the bottom of the backrest bracket 2, so that the backrest bracket 2 and the fixed bracket 1 bracket form an included angle.
  • the backrest bracket 2 is connected to two top plates 200 arranged along the length direction of the backrest bracket 2. There is a gap between the two top plates 200, and the top plates 200 and the backrest bracket 2 are welded and fixed. The two top plates The back of the 200 is set smoothly and in the same plane.
  • the power-assisted back push bed frame of this embodiment also includes a power-assisted bracket 4, a slider, a controller 5, and an electric push rod 3.
  • the power-assisted bracket 4 is rotatably connected to the fixed frame 1, and the power-assisted bracket 4 has an accompanying power-assisted bracket 4.
  • a rotating rod 400 is provided and rotationally connected to the fixed frame 1.
  • the rotating rod 400 is connected to two boosting arms 401 arranged transversely along the rotating rod 400.
  • the two boosting arms 401 are connected to the two top plates on the backrest bracket 2. 200 correspond one to one, and when the backrest bracket 2 is in the folded state, the free ends of the two booster arms 401 are against the back sides of the two top plates 200 respectively.
  • the sliding part slides and fits on the fixed frame 1 along the length direction of the fixed frame 1.
  • the sliding part is linked with the power-assist bracket 4. When the sliding part slides, it can drive the power-assist bracket 4 to rotate; the electric push rod 3 is provided on the fixed frame 1 and the backrest.
  • the first end of the electric push rod 3 is hinged with the hinge seat 300 on the side of the backrest bracket 2 away from the rotation axis 100, and the second end of the electric push rod 3 is connected to the sliding member; in the electric push rod 3.
  • the slider drives the booster bracket 4 to rotate and causes the free end of the booster arm 401 to push the backrest bracket 2, causing the backrest bracket 2 to rotate and expand to a certain angle from the folded state; when When the sliding member stays in 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 to adjust the inclination angle of the backrest bracket 2 .
  • the controller 5 is installed on the fixed frame 1 and is electrically connected to the electric push rod 3 for controlling the movement of the electric push rod 3.
  • the controller 5 is electrically connected to the external power supply through power wiring.
  • 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 .
  • the sliding part drives the power-assist bracket 4 to rotate, so that the free end of the boost arm 401 of the power-assist bracket 4 pushes the backrest bracket 2, causing the backrest bracket 2 to change from the folded state Rotate and unfold at a certain angle; when the slider stays in the second position, the backrest bracket 2 can continue to rotate and unfold relative to the fixed frame 1 driven by the electric push rod 3.
  • the electric push rod 3 unfolds and drives the sliding member to slide from the first position to the second position, the electric push rod 3 does not directly exert force on the rotation of the backrest bracket 2, but drives the sliding member to slide horizontally.
  • the power-assist bracket 4 is driven to rotate, so that the boost arm 401 of the power-assist bracket 4 drives the backrest bracket 2 to rotate and first expand to a certain angle.
  • the axis of the electric push rod 3 is close to the horizontal plane between the backrest bracket 2 or the fixed frame 1.
  • 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, and the noise generated will also be very large; and in the present invention, in When the backrest bracket 2 is in the folded state, the electric pushrod 3 can drive the sliding member to slide on the fixed frame 1 with only a small force, thereby linking the power assist bracket 4 to rotate so that the backrest bracket 2 expands to a certain angle.
  • the electric pushrod 3 The angle between the axis and the plane where the backrest bracket 2 is located or the plane where the fixed frame 1 is located increases, and the electric push rod 3 only needs to use a smaller force to drive the backrest bracket 2 to continue to rotate and expand; in other words, the backrest bracket 2.
  • the electric push rod 3 slides through the driving slider to rotate the power-assist bracket 4.
  • the boost arm 401 of the power-assist bracket 4 provides assistance for the rotation of the backrest bracket 2.
  • the backrest bracket 2 is unfolded to a certain angle, so that the electric push rod 3 can rotate.
  • the angle between the axis of the push rod 3 and the plane of the backrest bracket 2 or the plane of the fixed frame 1 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 It requires less force to quickly deploy the backrest bracket 2; therefore, the power-assisted back push bed frame can use a smaller power electric pushrod 3.
  • the electric pushrod 3 makes low noise; Furthermore, since the electric push rod 3 slides and links the power-assist bracket 4 to rotate by driving the sliding member, the boost arm 401 of the power-assist bracket 4 provides assistance to the rotation of the backrest bracket 2, so that the backrest bracket 2 can be easily unfolded to a certain angle in the folded state, thereby making it convenient
  • 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 can be set smaller in the folded state, thereby reducing the packaging volume of the back push bed frame and saving packaging costs.
  • the free end of the booster arm 401 pushes the top plate 200 away from the side of the rotation axis 100, so that the backrest bracket 2 has a longer rotational force arm and assists the rotation of the backrest bracket 2.
  • the push arm 401 exerts a small force on the backrest bracket 2 to rotate and unfold the backrest bracket 2. Therefore, the arrangement of the pusher arm 401 makes the electric pushrod 3 more labor-saving.
  • the side of the fixed frame 1 close to the rotating shaft 100 is connected to a first rod 101 parallel to the axis of the rotating shaft 100.
  • the first rod 101 The fixed base 104 is connected to the center of the fixed frame 1.
  • the fixed base 104 is provided with an elongated sliding hole 105 arranged along the length direction of the fixed frame 1.
  • the sliding member is a sliding shaft 108 that fits in the elongated sliding hole 105 with a clearance.
  • the power-assist 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 boosting arms 401 arranged transversely along the rotating rod 400.
  • the two boosting arms 401 correspond to the two top plates 200 one-to-one, and when the backrest bracket 2 is in the folded state, the free ends of the two boosting arms 401 respectively offset the back surfaces of the two top plates 200.
  • both ends of the rotating rod 400 are provided with rotating sleeves 405.
  • the rotating sleeves 405 at both ends of the rotating rod 400 are clearance-fitted in the two rotating seats 103 on the two second rods 102.
  • the rotating sleeves 405 are used to reduce rotation.
  • the friction between the two ends of the rotating rod 400 and the inner wall of the rotating base 103 can prevent the shaking between the two ends of the rotating rod 400 and the inner wall of the rotating base 103, making the rotating rod 400 rotate more stably; the free ends of the two boosting arms 401
  • the sliding sleeve 402 is provided with a smooth surface. When it is against the back of the top plate 200, it can reduce the friction between the two and reduce the noise during sliding; the sliding sleeve 402 and the rotating sleeve 405 of this embodiment can Made of plastic or rubber.
  • the electric push rod 3 when the backrest bracket 2 is in the folded state, the electric push rod 3 is in the retracted 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 in the first position;
  • the electric push rod 3 drives the sliding shaft 108 to slide from the first position to the second position of the elongated sliding hole 105.
  • the sliding shaft 108 rotates in conjunction with the power assist bracket 4 through the connecting rod 404.
  • the boost arm 401 of the power assist bracket 4 pushes the backrest bracket 2 upward, causing the backrest bracket 2 to rotate and expand to a certain angle; when the sliding shaft 108 slides to the end of the elongated sliding hole 105 close to the rotating shaft 100, that is, the sliding shaft 108 slides When reaching the second position, the sliding shaft 108 stops sliding and stays at the second position.
  • 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, when the electric push rod 3 drives the backrest bracket 2 to unfold from the folded state, it proceeds 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 to a certain angle, so that the electric push rod 3 The angle between the push rod 3 and the backrest bracket 2 becomes larger. During this process, the electric pushrod 3 does not directly exert thrust on the backrest bracket 2.
  • the second step is for the sliding shaft 108 to stay in the second position. At this time, the sliding shaft 108 stops sliding.
  • the electric push rod 3 directly exerts thrust on the backrest bracket 2 to drive the backrest bracket 2 to rotate; therefore, compared with the prior art in which the electric pushrod 3 directly exerts thrust on the backrest bracket 2 when the backrest bracket 2 is unfolded from the folded state,
  • the electric push rod 3 of this back push bed frame is more labor-saving.
  • 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 provided between the sliding shaft 108 and the power assist 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 power-assist bracket 4, and is used to drive the power-assist bracket 4 to rotate when the sliding shaft 108 slides.
  • the rotating rod 400 of the power assist bracket 4 is connected with two swing arms 403 that protrude laterally along the rotating rod 400; there are two connecting rods 404 in this embodiment, and they are respectively arranged on both sides of the sliding shaft 108.
  • the first ends of the two connecting rods 404 are respectively rotatably connected to the two ends of the sliding shaft 108 through pins, 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 pins.
  • a long sliding hole 105 extending along the length direction of the elongated sliding hole 105 is connected to the bottom of the fixed base 104
  • the bottom plate 106 has two pulleys 109 connected to the sliding shaft 108, and the bottoms of the two pulleys 109 are in flat contact with the top of the bottom plate 106. In this way, when the sliding shaft 108 slides in the elongated sliding hole 105, the pulley 109 slides or rolls on the bottom plate 106.
  • the aperture size of the end of the elongated sliding hole 105 close to the rotating shaft 100 is smaller than the aperture size of the end of the elongated sliding hole 105 away from the rotating shaft 100 , and the elongated sliding hole 105
  • the inner wall has a smooth transition between the two ends. It is arranged in this way, 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 sliding shaft 108 When the sliding shaft 108 is in the second position, the gap between the outer side wall of the sliding shaft 108 and the long The gap between the inner walls of the elongated sliding hole 105 is small; when the backrest bracket 2 is in the folded state, the sliding shaft 108 is in the first position of the elongated sliding hole 105. At this time, due to the outer wall of the sliding shaft 108 and the inner wall of the elongated sliding hole 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 to the second position of the elongated sliding hole 105, the resistance is smaller and the sliding is more flexible.
  • the elongated sliding hole 105 Such an arrangement of 105 makes it easier for the sliding shaft 108 to slide from the first position to the second position; furthermore, the aperture size of the elongated sliding hole 105 at the second position is smaller, and when the sliding shaft 108 stays at the second position, the sliding shaft 108 The gap between the sliding shaft 108 and the inner wall of the elongated sliding hole 105 is small, so that the sliding shaft 108 rotates more smoothly without shaking under the driving of the electric push rod 3 .
  • 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 sets of telescopic tubes 602 are arranged along the width direction of the backrest bracket 2.
  • the outer ends of the two sets of telescopic tubes 602 are respectively connected to the support rods 600 of the two baffle assemblies 6; the bottoms on both sides of the backrest bracket 2 are threaded with locks. Tighten the screw 603, and the inner end of the locking screw 603 is against the outer wall of the telescopic tube 602. This arrangement allows the width between the two baffle assemblies 6 to be adjusted. After the length of the telescopic tube 602 is adjusted, it can be locked by the locking screw 603 to better match the width of the mattress.
  • the telescopic component may also be a three-section slide rail, a folding bracket, etc.
  • an electric bed which includes a bed frame 7 and bed legs 8 connected to the bottom of the bed frame 7.
  • the bed frame 7 is connected to any of the above embodiments.
  • the bed frame 7 is longitudinally connected with at least two sets of straps 10. Each set of straps 10 is connected to the bed frame 7 and the fixed frame 1 respectively, and each set of straps 10 is connected to an upwardly extending tail stop at the end of the bed frame 7.
  • Board 9; the bed frame 7 is connected with at least one set of straps 10 transversely, and each set of straps 10 is connected to upwardly extending side baffles 900 on both sides of the bed frame 7.
  • the electric bed is connected to the bed frame 7 with a power-assisted back push bed frame to form an electric bed; and when the backrest bracket 2 of the back push bed frame is unfolded from the folded state, the electric push rod 3 is exerted to slide in the initial state.
  • the thrust of the parts causes the sliding parts to slide, thereby linking the power-assisted bracket 4 to rotate.
  • the boost arm 401 of the power-assisted bracket 4 provides assistance for the rotation of the backrest bracket 2.
  • the backrest bracket 2 is expanded to a certain angle, so that the axis of the electric push rod 3 is in contact with the backrest.
  • the angle between the plane where the 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 a smaller force in the initial state.
  • the backrest bracket 2 is quickly deployed; therefore, the electric pushrod 3 of smaller power can be used for the back push bed frame of the electric bed.
  • the noise of the electric pushrod 3 is low; furthermore, due to the electric pushrod 3.
  • the boost arm 401 of the power-assist bracket 4 provides assistance for the rotation of the backrest bracket 2, so that the backrest bracket 2 can easily unfold to a certain angle when in the folded state, thereby facilitating the electric push rod 3 to drive the backrest bracket. 2 unfolds; 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 back push bed frame and saving packaging costs.
  • the arrangement of the straps 10 on the bed frame 7 makes the connection of the push-back bed frame simpler and more convenient; and the electric bed can be adapted to mattresses of different widths and sizes, and has good versatility.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

一种带助力的背推床架及电动床，带助力的背推床架包括固定架（1）、靠背支架（2）和助力支架（4），助力支架（4）具有随助力支架（4）同步转动的助推臂（401），助推臂（401）的自由端至少在靠背支架（2）处于折叠状态时与靠背支架（2）的背面相抵；还包括滑动件和电动推杆（3），滑动件与助力支架（4）联动连接，在滑动件滑动时，可带动助力支架（4）转动；电动推杆（3）与靠背支架（2）和滑动件连接；在电动推杆（3）驱动下滑动件由第一位置滑动至第二位置时，靠背支架（2）从折叠状态转动展开；当滑动件停留在第二位置时，靠背支架（2）在电动推杆（3）的驱动下相对于固定架（1）可继续转动展开以调节靠背支架（2）的倾斜角度。该带助力的背推床架及电动床包装体积小，且电动推杆（3）在起始状态下只需较小的力即可使靠背支架（2）快速展开。

Description

一种带助力的背推床架及电动床 技术领域
本发明涉及家具设备技术领域，具体讲的是一种带助力的背推床架及电动床。
背景技术
随着人们生活水平的提高，电动床得到广泛应用。现有技术的电动床其结构包括床框架、床腿及连接在床框架上的靠背支架和腿部支架，靠背支架的一端与腿部支架铰接，且靠背支架与床框架之间连接有可驱动靠背支架转动的驱动电机；该电动床可调节用户的睡姿、躺、坐等姿势，缓解疲劳，因此深受用户的喜爱。现有技术的电动床为了便于与用户家中普通床进行配合使用，其电动床框架一般是独立配置的，该电动床框架也称背推床架，也即用户只需要购买背推床架，然后将背推床架放置在普通床的床架上即可使普通床变成电动床使用。
现有技术的背推床架，其结构包括固定架和靠背支架，固定架放置在床架上并与床架固定，靠背支架的一端与固定架的一端可转动连接，使靠背支架相对于固定架可绕转动轴转动；固定架和靠背支架之间设有电动推杆，电动推杆的一端与固定架铰接，电动推杆的另一端与靠背支架铰接，在电动推杆展开或收缩时可驱动靠背支架转动角度。为了使背推床架具有更小的包装体积来方便运输及节约包装成本，背推床架在折叠状态下的厚度设计的越小越好，最理想的状态是固定架和靠背支架在完全折叠后两者之间的夹角为零或接近于零，此时固定架和靠背支架之间的电动推杆大致处于水平状态或接近于水平。在电动推杆推动靠背支架在展开的起始状态时，因靠背支架与固定架之间的角度较小，导致靠背支架不能快速转动展开或电动推杆需要提供较大的力才能使靠背支架转动展开，而往往用户在实际使用时，一般是用手辅助靠背支架转动展开，操作非常麻烦。因此，大多数的背推床架其靠背支架和固定架在完全折叠后，靠背支架和固定架之间的夹角设置的较大，以便于电动推杆在起始状态下能将靠背支架展开，但即使如此，电动推杆在起始状态下因倾斜角度较小也必须使用较大的力才能将靠背支架展开。另外，现有技术的背推床架在生产后，其宽度是固定的，也即一个背推床架只适应于一种宽度的床垫，其通用性较差，不能满足用户的需求。
发明内容
本发明要解决的技术问题是，克服以上现有技术的缺陷，提供一种包装体积小，且电动推杆在起始状态下只需较小的力即可使靠背支架快速展开的带助力的背推床架。
本发明的技术解决方案是，提供一种具有以下结构的带助力的背推床架：它包括
固定架；
靠背支架，其一端与固定架的一端通过转动轴可转动连接，用于使靠背支架相对于固定架可转动至折叠状态或展开状态；
助力支架，可转动连接在固定架上，且助力支架具有随助力支架同步转动的助推臂，所述助推臂的自由端至少在靠背支架处于折叠状态时与靠背支架的背面相抵；
滑动件，沿固定架的长度方向滑动配合在固定架上，所述的滑动件与助力支架联动连接，在滑动件滑动时，可带动助力支架转动；
电动推杆，设置于固定架和靠背支架之间，所述电动推杆的第一端与靠背支架远离转动轴的一侧铰接，电动推杆的第二端与滑动件连接；在电动推杆驱动滑动件由第一位置滑动至第二位置时，滑动件带动助力支架转动并使助推臂的自由端顶推靠背支架，使靠背支架从折叠状态转动展开；当滑动件停留在第二位置时，靠背支架在电动推杆的驱动下相对于固定架可继续转动展开以调节靠背支架的倾斜角度。
采用以上结构后，本发明一种带助力的背推床架与现有技术相比，具有以下优点：该带助力的背推床架的靠背支架由折叠状态展开时，电动推杆展开并驱动滑动件沿固定架的长度方向由第一位置滑动至第二位置的过程中，因滑动件与助力支架的联动连接关系，因此滑动件带动助力支架转动，从而使助力支架的助推臂的自由端顶推靠背支架，使靠背支架从折叠状态转动展开一定角度；当滑动件停留在第二位置时，靠背支架在电动推杆的驱动下相对于固定架可继续转动展开。因此在电动推杆展开并驱动滑动件由第一位置滑动至第二位置的过程中，电动推杆不直接对靠背支架的转动施加作用力，而是通过驱动滑动件的水平滑动来带动助力支架转动，使助力支架的助推臂驱动靠背支架转动先展开一定角度。众所周知，在靠背支架处于折叠状态时，由于靠背支架与固定架之间的夹角较小，而电动推杆的轴线与靠背支架所在平面或固定架所在平面之间接近水平或平行；电动推杆如果直接驱动靠背支架转动展开，则需要提供较大的力，这样要求电动推杆的功率足够大，从而产生的噪音也会很大；而本发明中，在靠背支架处于折叠状态时，电动推杆只需较小的力便可驱动滑动件在固定架上滑动从而联动助力支架转动使靠背支架展开一定角度，此时电动推杆的轴线与靠背支架所在平面或固定架所在平面之间的夹角增大，电动推杆只需再用较小的力，便可驱动靠背支架继续转动展开；换句话说，靠背支架在由折叠状态展开时，电动推杆通过驱动滑动件滑动使助力支架转动，助力支架的助推臂给靠背支架转动提供助力，先使靠背支架展开一定角度，使电动推杆的轴线与靠背支架所在平面或固定架所在平面之间的夹角变大，电动推杆再直接 驱动靠背支架继续转动展开，因此电动推杆在起始状态下只需较小的力即可使靠背支架快速展开；因此，该带助力的背推床架可使用较小功率的电动推杆，靠背支架在展开时，电动推杆的噪音低；再者，由于电动推杆通过驱动滑动件滑动联动助力支架转动，助力支架的助推臂给靠背支架转动提供助力使靠背支架在折叠状态下可轻松展开一定角度，从而方便电动推杆驱动靠背支架展开；因此靠背支架在折叠状态下与固定架之间的夹角可以设置的更小，从而可缩小背推床架的包装体积，节约包装成本。
作为优选，所述助推臂的自由端在靠背支架处于折叠状态时与靠背支架远离转动轴一侧的背面相抵，且在滑动件由第一位置滑动至第二位置并带动助力支架转动时，助推臂的自由端始终与靠背支架的背面接触且向靠近靠背支架转动轴方向转动。这样设置，在滑动件被电动推杆驱动由第一位置向第二位置滑动时，助推臂的自由端顶推靠背支架远离转动轴一侧，从而使靠背支架转动的力臂长，助推臂给靠背支架施加较小的力即可使靠背支架转动展开，因此该助推臂的设置，使电动推杆更加省力。
作为优选，所述靠背支架上连接两个沿靠背支架长度方向设置的顶板；所述助力支架包括沿固定架宽度方向设置且转动连接在固定架上的转动杆，所述转动杆上连接两个沿转动杆横向设置的助推臂，两个助推臂与两个顶板一一对应，且靠背支架处于折叠状态时，两个助推臂的自由端分别与两个顶板的背面相抵。两个助推臂与靠背支架上两个顶板的对应设置，在滑动件被电动推杆驱动由第一位置向第二位置滑动使靠背支架由折叠状态展开时，两个助推臂的自由端始终与两个顶板的背面滑动相抵，从而使靠背支架的展开更加平稳。
作为优选，所述固定架靠近转动轴的一侧连接一固定座，所述固定座上设有沿固定架长度方向设置的长形滑孔，所述的滑动件为间隙配合在长形滑孔内的滑动轴，所述长形滑孔远离转动轴的一端形成所述第一位置，长形滑孔靠近转动轴的一端形成所述第二位置；所述电动推杆的第二端与所述滑动轴连接，用于驱动滑动轴在长形滑孔内滑动；所述滑动轴与助力支架之间设有连杆，连杆的第一端与滑动轴连接，连杆的第二端与助力支架连接，用于在滑动轴滑动时，带动助力支架转动。这样设置，在靠背支架处于折叠状态时，电动推杆处于收缩状态，滑动轴位于长形滑孔远离转动轴的一端，也即滑动轴位于第一位置上；在靠背支架由折叠状态展开时，电动推杆驱动滑动轴从长形滑孔的第一位置滑动至第二位置的过程中，滑动轴通过连杆联动助力支架转动，从而使助力支架的助推臂向上顶推靠背支架，使靠背支架转动展开一定角度；当滑动轴滑动至长形滑孔靠近转动轴的一端，也即滑动轴滑动至第二位置时，滑动轴停止滑动且停留在第二位置上，电动推杆继续展开时可直接驱动靠背支架相对于固定架转动。也即电动推杆在驱动靠背支架由折叠状态展开时，分两个步骤进行，第一 步骤是滑动轴由第一位置滑动至第二位置，靠背支架转动展开一定角度，使电动推杆与靠背支架的夹角变大，这个过程中，电动推杆不直接对靠背支架施加推力；第二步骤是滑动轴停留第二位置，此时，滑动轴停止滑动且电动推杆直接对靠背支架施加推力，驱动靠背支架转动；因此，相对于现有技术中靠背支架由折叠状态展开时，电动推杆直接对靠背支架施加推力相比，该背推床架的电动推杆更加省力。
作为优选，所述助力支架的转动杆上连接有两个沿转动杆横向外凸的摆臂；所述的连杆为两个，且分别设置在滑动轴的两侧，两个连杆的第一端分别与滑动轴的两端可转动连接，两个连杆的第二端分别与两个摆臂的自由端可转动连接。摆臂的设置，使滑动轴在带动助力支架的转动杆转动时，更加省力。
作为优选，所述固定座的底部连接有沿长形滑孔长度方向延伸的底板，所述滑动轴上连接两个滑轮，所述两个滑轮的底部与底板的顶部平面接触。这样设置，在滑动轴滑动时，摩擦阻力更小，更方便靠背支架由折叠状态展开。
作为优选，所述长形滑孔靠近转动轴一端的孔径尺寸小于长形滑孔远离转动轴一端的孔径尺寸，且长形滑孔两端之间的内壁光滑过渡。这样设置，也即滑动轴处于第一位置时，滑动轴的外侧壁与长形滑孔内壁之间的间隙大，滑动轴处于第二位置时，滑动轴的外侧壁与长形滑孔内壁之间的间隙小；在靠背支架处于折叠状态时，滑动轴处于长形滑孔的第一位置，此时由于滑动轴的外侧壁与长形滑孔内壁之间的间隙大，在滑动轴被电动推杆驱动，由长形滑孔的第一位置滑动至第二位置时，阻力更小、滑动更加灵活，换句话说，长形滑孔的这样设置，更方便滑动轴从第一位置滑动至第二位置；再者，长形滑孔第二位置的孔径尺寸较小，滑动轴停留在第二位置时，滑动轴与长形滑孔内壁之间的间隙小，这样在电动推杆的驱动下滑动轴的转动更加平稳无晃动。
作为优选，所述靠背支架的两侧设有两个挡板组件，所述两个挡板组件与靠背支架之间均连接有伸缩组件，所述的伸缩组件用于调节两个挡板组件之间的宽度。这样设置可调节两个挡板组件之间的宽度，从而适配不同尺寸宽度的床垫，其通用性好。
作为优选，所述的挡板组件包括沿靠背支架长度方向设置支撑杆和至少一个连接在支撑杆上且向上延伸的护板；所述靠背支架的两侧连接两组沿靠背支架宽度方向设置的伸缩管，两组伸缩管的外端分别与两个挡板组件的支撑杆连接；所述靠背支架两侧的底部均螺纹连接有锁紧螺丝，所述锁紧螺丝的内端与伸缩管的外侧壁相抵。这样设置，伸缩管长度调节后，可通过锁紧螺丝锁紧，从而更好地与床垫的宽度尺寸相适配。
作为优选，所述固定架远离转动轴的一端的顶部两侧连接有两个向上延伸设置的顶块， 在靠背支架处于折叠状态时，所述两个顶块的顶部与靠背支架的底部相抵，使靠背支架与固定架支架形成有夹角。这样设置使靠背支架处于折叠状态时，靠背支架与固定架之间具有夹角，该夹角形成的空间供电动推杆、控制器等容置；同样也方便靠背支架由折叠状态向外展开。
本发明的另一技术解决方案是，提供一种具有以下结构的电动床：它包括床架，所述床架上连接有上述任一技术方案所述的带助力的背推床架。所述床架的纵向连接有至少两组束带，每组束带分别与床架和固定架连接，且每组束带位于床架尾部的部位连接有向上延伸的尾部挡板；所述床架的横向连接有至少一组束带，且每组束带位于床架两侧的部位均连接有向上延伸的侧部挡板。
采用以上结构后，本发明一种电动床与现有技术相比，具有以下优点：该电动床在床架上连接带助力的背推床架，从而形成电动床；且背推床架的靠背支架由折叠状态展开时，因电动推杆在起始状态下施加给滑动件的推力，使滑动件滑动，从而联动助力支架转动，助力支架的助推臂给靠背支架转动提供助力，先使靠背支架展开一定角度，使电动推杆的轴线与靠背支架所在平面或固定架所在平面之间的夹角变大，电动推杆再直接驱动靠背支架继续转动展开，因此电动推杆在起始状态下只需较小的力即可使靠背支架快速展开；因此，该电动床的背推床架可使用较小功率的电动推杆，靠背支架在展开时，电动推杆的噪音低；再者，由于电动推杆通过驱动滑动件滑动联动助力支架转动，助力支架的助推臂给靠背支架转动提供助力使靠背支架在折叠状态时可轻松展开一定角度，从而方便电动推杆驱动靠背支架展开；因此靠背支架在折叠状态下与固定架之间的夹角可以设置的更小，从而可缩小背推床架的包装体积，节约包装成本。而且，床架上束带的设置，使背推床架的连接更加简单方便；且该电动床可适配不同宽度尺寸的床垫，通用性好。
附图说明
图1是本发明一种带助力的背推床架的结构示意图。
图2是本发明一种带助力的背推床架的另一角度结构示意图。
图3是本发明一种带助力的背推床架的剖视结构示意图。
图4是本发明一种带助力的背推床架的电动推杆的连接结构示意图。
图5是本发明一种带助力的背推床架的固定架的结构示意图。
图6是本发明一种带助力的背推床架的助力支架的结构示意图。
图7是本发明一种电动床的结构示意图。
图8是本发明一种电动床的另一角度结构示意图。
如图所示：
1、固定架，100、转动轴，101、第一杆件，102、第二杆件，103、转动座，104、固定座，105、长形滑孔，106、底板，107、顶块，108、滑动轴，109、滑轮，2、靠背支架，200、顶板，3、电动推杆，300、铰接座，4、助力支架，400、转动杆，401、助推臂，402、滑动套，403、摆臂，404、连杆，405、转动套，5、控制器，6、挡板组件，600、支撑杆，601、护板，602、伸缩管，603、锁紧螺丝，7、床架，8、床腿，9、尾部挡板，900、侧部挡板，10、束带。
具体实施方式
下面结合附图和具体实施例对本发明作进一步详细说明。
参见图1～图6所示；
本发明实施例公开一种带助力的背推床架，其用于安装在普通床的床架上使用，普通床也即具有床架及安装在床架底部的床腿组成；该背推床架的结构包括固定架1和靠背支架2；靠背支架2的一端与固定架1的一端通过转动轴100可转动连接，用于使靠背支架2相对于固定架1可转动至折叠状态或展开状态；本实施例中，固定架1和靠背支架2均是由钢制杆件围设成U字形，靠背支架2的两自由端分别位于固定架1两自由端的外侧且靠背支架2的两自由端与固定架1两自由端通过转动轴100转动连接，固定架1远离转动轴100的一端的顶部两侧连接有两个向上延伸设置的顶块107，在靠背支架2处于折叠状态时，所述两个顶块107的顶部与靠背支架2的底部相抵，使靠背支架2与固定架1支架形成有夹角。且在本实施例中，靠背支架2上连接两个沿靠背支架2长度方向设置的顶板200，该两个顶板200之间具有间隙，且顶板200与靠背支架2之间焊接固定，两个顶板200的背面光滑设置且位于同一平面。
本实施例的带助力的背推床架还包括助力支架4、滑动件、控制器5和电动推杆3，助力支架4可转动连接在固定架1上，且助力支架4具有随助力支架4同步转动的助推臂401，所述助推臂401的自由端至少在靠背支架2处于折叠状态时与靠背支架2的背面相抵；在本实施例中，助力支架4包括沿固定架1宽度方向设置且转动连接在固定架1上的转动杆400，所述转动杆400上连接两个沿转动杆400横向设置的助推臂401，两个助推臂401与靠背支架2上的两个顶板200一一对应，且靠背支架2处于折叠状态时，两个助推臂401的自由端分别与两个顶板200的背面相抵。滑动件沿固定架1的长度方向滑动配合在固定架1上，滑动件与助力支架4联动连接，在滑动件滑动时，可带动助力支架4转动；电动推杆3设置于 固定架1和靠背支架2之间，所述电动推杆3的第一端与靠背支架2远离转动轴100的一侧上的铰接座300铰接，电动推杆3的第二端与滑动件连接；在电动推杆3驱动滑动件由第一位置滑动至第二位置时，滑动件带动助力支架4转动并使助推臂401的自由端顶推靠背支架2，使靠背支架2从折叠状态转动展开一定角度；当滑动件停留在第二位置时，靠背支架2在电动推杆3的驱动下相对于固定架1可继续转动展开以调节靠背支架2的倾斜角度。控制器5安装在固定架1上，且控制器5与电动推杆3电性连接，用于控制电动推杆3动作，该控制器5通过电源接线与外界电源电性连接。
在本实施例中，该带助力的背推床架的靠背支架2由折叠状态展开时，电动推杆3展开并驱动滑动件沿固定架1的长度方向由第一位置滑动至第二位置的过程中，因滑动件与助力支架4的联动连接关系，因此滑动件带动助力支架4转动，从而使助力支架4的助推臂401的自由端顶推靠背支架2，使靠背支架2从折叠状态转动展开一定角度；当滑动件停留在第二位置时，靠背支架2在电动推杆3的驱动下相对于固定架1可继续转动展开。因此在电动推杆3展开并驱动滑动件由第一位置滑动至第二位置的过程中，电动推杆3不直接对靠背支架2的转动施加作用力，而是通过驱动滑动件的水平滑动来带动助力支架4转动，使助力支架4的助推臂401驱动靠背支架2转动先展开一定角度。众所周知，在靠背支架2处于折叠状态时，由于靠背支架2与固定架1之间的夹角较小，而电动推杆3的轴线与靠背支架2所在平面或固定架1所在平面之间接近水平或平行；电动推杆3如果直接驱动靠背支架2转动展开，则需要提供较大的力，这样要求电动推杆3的功率足够大，从而产生的噪音也会很大；而本发明中，在靠背支架2处于折叠状态时，电动推杆3只需较小的力便可驱动滑动件在固定架1上滑动从而联动助力支架4转动使靠背支架2展开一定角度，此时电动推杆3的轴线与靠背支架2所在平面或固定架1所在平面之间的夹角增大，电动推杆3只需再用较小的力，便可驱动靠背支架2继续转动展开；换句话说，靠背支架2在由折叠状态展开时，电动推杆3通过驱动滑动件滑动使助力支架4转动，助力支架4的助推臂401给靠背支架2转动提供助力，先使靠背支架2展开一定角度，使电动推杆3的轴线与靠背支架2所在平面或固定架1所在平面之间的夹角变大，电动推杆3再直接驱动靠背支架2继续转动展开，因此电动推杆3在起始状态下只需较小的力即可使靠背支架2快速展开；因此，该带助力的背推床架可使用较小功率的电动推杆3，靠背支架2在展开时，电动推杆3的噪音低；再者，由于电动推杆3通过驱动滑动件滑动联动助力支架4转动，助力支架4的助推臂401给靠背支架2转动提供助力使靠背支架2在折叠状态下可轻松展开一定角度，从而方便电动推杆3驱动靠背支架2展开；因此靠背支架2在折叠状态下与固定架1之间的夹角可以设置的更小，从而可 缩小背推床架的包装体积，节约包装成本。
再次参见图1或图3所示，作为本发明的一种实施例；助推臂401的自由端在靠背支架2处于折叠状态时与靠背支架2上顶板200远离转动轴100一侧的背面相抵，且在滑动件由第一位置滑动至第二位置并带动助力支架4转动时，助推臂401的自由端始终与靠背支架2的顶板200背面接触且向靠近靠背支架2转动轴100方向转动。在滑动件被电动推杆3驱动由第一位置向第二位置滑动时，助推臂401的自由端顶推顶板200远离转动轴100一侧，从而使靠背支架2转动的力臂长，助推臂401给靠背支架2施加较小的力即可使靠背支架2转动展开，因此该助推臂401的设置，使电动推杆3更加省力。
再次参见图4～图6所示，作为本发明的一种实施例；固定架1靠近转动轴100的一侧连接有与转动轴100的轴线平行的第一杆件101，第一杆件101的中心位置连接有固定座104，固定座104上设有沿固定架1长度方向设置的长形滑孔105，所述的滑动件为间隙配合在长形滑孔105内的滑动轴108，所述长形滑孔105远离转动轴100的一端形成所述第一位置，长形滑孔105靠近转动轴100的一端形成所述第二位置；该第一杆件101与固定架1外端的内侧壁之间连接有两个沿固定架1长度方向设置的第二杆件102，两个第二杆件102上对称设有两个开口朝上设置的转动座103。在本实施例中，助力支架4包括沿固定架1宽度方向设置且转动连接在固定架1上的转动杆400，所述转动杆400上连接两个沿转动杆400横向设置的助推臂401，两个助推臂401与两个顶板200一一对应，且靠背支架2处于折叠状态时，两个助推臂401的自由端分别与两个顶板200的背面相抵。进一步地，转动杆400的两端套设有转动套405，转动杆400两端的转动套405间隙配合在两个第二杆件102上的两个转动座103内，转动套405用于减少转动杆400两端与转动座103内壁之间的摩擦力，且能避免转动杆400两端与转动座103内壁之间晃动，使转动杆400转动的更加稳定；两个助推臂401的自由端套设有滑动套402，该滑动套402表面光滑，与顶板200的背面相抵时可减小两者之间的摩擦力且降低滑动时的噪音；本实施例的滑动套402和转动套405可以为塑料或橡胶制成。
在本实施例中，在靠背支架2处于折叠状态时，电动推杆3处于收缩状态，滑动轴108位于长形滑孔105远离转动轴100的一端，也即滑动轴108位于第一位置上；在靠背支架2由折叠状态展开时，电动推杆3驱动滑动轴108从长形滑孔105的第一位置滑动至第二位置的过程中，滑动轴108通过连杆404联动助力支架4转动，从而使助力支架4的助推臂401向上顶推靠背支架2，使靠背支架2转动展开一定角度；当滑动轴108滑动至长形滑孔105靠近转动轴100的一端，也即滑动轴108滑动至第二位置时，滑动轴108停止滑动且停留在 第二位置上，电动推杆3继续展开时可直接驱动靠背支架2相对于固定架1转动。也即电动推杆3在驱动靠背支架2由折叠状态展开时，分两个步骤进行，第一步骤是滑动轴108由第一位置滑动至第二位置，靠背支架2转动展开一定角度，使电动推杆3与靠背支架2的夹角变大，这个过程中，电动推杆3不直接对靠背支架2施加推力；第二步骤是滑动轴108停留第二位置，此时，滑动轴108停止滑动且电动推杆3直接对靠背支架2施加推力，驱动靠背支架2转动；因此，相对于现有技术中靠背支架2由折叠状态展开时，电动推杆3直接对靠背支架2施加推力相比，该背推床架的电动推杆3更加省力。
再次参见图4所示，电动推杆3的第二端与滑动轴108连接，用于驱动滑动轴108在长形滑孔105内滑动；滑动轴108与助力支架4之间设有连杆404，连杆404的第一端与滑动轴108连接，连杆404的第二端与助力支架4连接，用于在滑动轴108滑动时，带动助力支架4转动。进一步地，助力支架4的转动杆400上连接有两个沿转动杆400横向外凸的摆臂403；本实施例的连杆404为两个，且分别设置在滑动轴108的两侧，两个连杆404的第一端分别与滑动轴108的两端通过销轴可转动连接，两个连杆404的第二端分别与两个摆臂403的自由端通过销轴可转动连接。作为本发明的另一实施例，为了使滑动轴108在滑动时，摩擦阻力更小，更方便靠背支架2由折叠状态展开，在固定座104的底部连接有沿长形滑孔105长度方向延伸的底板106，所述滑动轴108上连接两个滑轮109，所述两个滑轮109的底部与底板106的顶部平面接触。这样滑动轴108在长形滑孔105内滑动时，滑轮109在底板106上滑动或滚动。
再次参见图5所示，作为本发明的一种实施例；长形滑孔105靠近转动轴100一端的孔径尺寸小于长形滑孔105远离转动轴100一端的孔径尺寸，且长形滑孔105两端之间的内壁光滑过渡。这样设置，也即滑动轴108处于第一位置时，滑动轴108的外侧壁与长形滑孔105内壁之间的间隙大，滑动轴108处于第二位置时，滑动轴108的外侧壁与长形滑孔105内壁之间的间隙小；在靠背支架2处于折叠状态时，滑动轴108处于长形滑孔105的第一位置，此时由于滑动轴108的外侧壁与长形滑孔105内壁之间的间隙大，在滑动轴108被电动推杆3驱动，由长形滑孔105的第一位置滑动至第二位置时，阻力更小、滑动更加灵活，换句话说，长形滑孔105的这样设置，更方便滑动轴108从第一位置滑动至第二位置；再者，长形滑孔105第二位置的孔径尺寸较小，滑动轴108停留在第二位置时，滑动轴108与长形滑孔105内壁之间的间隙小，这样在电动推杆3的驱动下滑动轴108的转动更加平稳无晃动。
再次参见图1或图2所示，作为本发明的一种实施例；为了使该带助力的背推床架能适配不同尺寸宽度的床垫，使其通用性好。在靠背支架2的两侧设有两个挡板组件6，两个挡 板组件6与靠背支架2之间均连接有伸缩组件，所述的伸缩组件用于调节两个挡板组件6之间的宽度。具体地，在本实施例中，挡板组件6包括沿靠背支架2长度方向设置支撑杆600和至少一个连接在支撑杆600上且向上延伸的护板601；所述靠背支架2的两侧连接两组沿靠背支架2宽度方向设置的伸缩管602，两组伸缩管602的外端分别与两个挡板组件6的支撑杆600连接；所述靠背支架2两侧的底部均螺纹连接有锁紧螺丝603，所述锁紧螺丝603的内端与伸缩管602的外侧壁相抵。这样设置可调节两个挡板组件6之间的宽度，伸缩管602长度调节后，可通过锁紧螺丝603锁紧，从而更好地与床垫的宽度尺寸相适配。在其他实施例中，伸缩组件也可以是三节滑轨、折叠支架等。
参见图7和图8所示，本发明另一实施例公开一种电动床，它包括床架7和连接在床架7底部的床腿8，所述床架7上连接有上述任一实施例所述的带助力的背推床架。床架7的纵向连接有至少两组束带10，每组束带10分别与床架7和固定架1连接，且每组束带10位于床架7尾部的部位连接有向上延伸的尾部挡板9；所述床架7的横向连接有至少一组束带10，且每组束带10位于床架7两侧的部位均连接有向上延伸的侧部挡板900。该电动床在床架7上连接带助力的背推床架，从而形成电动床；且背推床架的靠背支架2由折叠状态展开时，因电动推杆3在起始状态下施加给滑动件的推力，使滑动件滑动，从而联动助力支架4转动，助力支架4的助推臂401给靠背支架2转动提供助力，先使靠背支架2展开一定角度，使电动推杆3的轴线与靠背支架2所在平面或固定架1所在平面之间的夹角变大，电动推杆3再直接驱动靠背支架2继续转动展开，因此电动推杆3在起始状态下只需较小的力即可使靠背支架2快速展开；因此，该电动床的背推床架可使用较小功率的电动推杆3，靠背支架2在展开时，电动推杆3的噪音低；再者，由于电动推杆3通过驱动滑动件滑动联动助力支架4转动，助力支架4的助推臂401给靠背支架2转动提供助力使靠背支架2在折叠状态时可轻松展开一定角度，从而方便电动推杆3驱动靠背支架2展开；因此靠背支架2在折叠状态下与固定架1之间的夹角可以设置的更小，从而可缩小背推床架的包装体积，节约包装成本。而且，床架7上束带10的设置，使背推床架的连接更加简单方便；且该电动床可适配不同宽度尺寸的床垫，通用性好。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (12)

  1. 一种带助力的背推床架，其特征在于：它包括
    固定架；
    靠背支架，其一端与固定架的一端通过转动轴可转动连接，用于使靠背支架相对于固定架可转动至折叠状态或展开状态；
    助力支架，可转动连接在固定架上，且助力支架具有随助力支架同步转动的助推臂，所述助推臂的自由端至少在靠背支架处于折叠状态时与靠背支架的背面相抵；
    滑动件，沿固定架的长度方向滑动配合在固定架上，所述的滑动件与助力支架联动连接，在滑动件滑动时，可带动助力支架转动；
    电动推杆，设置于固定架和靠背支架之间，所述电动推杆的第一端与靠背支架远离转动轴的一侧铰接，电动推杆的第二端与滑动件连接；在电动推杆驱动滑动件由第一位置滑动至第二位置时，滑动件带动助力支架转动并使助推臂的自由端顶推靠背支架，使靠背支架从折叠状态转动展开；当滑动件停留在第二位置时，靠背支架在电动推杆的驱动下相对于固定架可继续转动展开以调节靠背支架的倾斜角度。
  2. 根据权利要求1所述的一种带助力的背推床架，其特征在于：所述助推臂的自由端在靠背支架处于折叠状态时与靠背支架远离转动轴一侧的背面相抵，且在滑动件由第一位置滑动至第二位置并带动助力支架转动时，助推臂的自由端始终与靠背支架的背面接触且向靠近靠背支架转动轴方向转动。
  3. 根据权利要求2所述的一种带助力的背推床架，其特征在于：所述靠背支架上连接两个沿靠背支架长度方向设置的顶板；所述助力支架包括沿固定架宽度方向设置且转动连接在固定架上的转动杆，所述转动杆上连接两个沿转动杆横向设置的助推臂，两个助推臂与两个顶板一一对应，且靠背支架处于折叠状态时，两个助推臂的自由端分别与两个顶板的背面相抵。
  4. 根据权利要求1～3任一项所述的一种带助力的背推床架，其特征在于：所述固定架靠近转动轴的一侧连接一固定座，所述固定座上设有沿固定架长度方向设置的长形滑孔，所述的滑动件为间隙配合在长形滑孔内的滑动轴，所述长形滑孔远离转动轴的一端形成所述第一位置，长形滑孔靠近转动轴的一端形成所述第二位置；所述电动推杆的第二端与所述滑动轴连接，用于驱动滑动轴在长形滑孔内滑动；所述滑动轴与助力支架之间设有连杆，连杆的 第一端与滑动轴连接，连杆的第二端与助力支架连接，用于在滑动轴滑动时，带动助力支架转动。
  5. 根据权利要求4所述的一种带助力的背推床架，其特征在于：所述助力支架的转动杆上连接有两个沿转动杆横向外凸的摆臂；所述的连杆为两个，且分别设置在滑动轴的两侧，两个连杆的第一端分别与滑动轴的两端可转动连接，两个连杆的第二端分别与两个摆臂的自由端可转动连接。
  6. 根据权利要求5所述的一种带助力的背推床架，其特征在于：所述固定座的底部连接有沿长形滑孔长度方向延伸的底板，所述滑动轴上连接两个滑轮，所述两个滑轮的底部与底板的顶部平面接触。
  7. 根据权利要求4所述的一种带助力的背推床架，其特征在于：所述长形滑孔靠近转动轴一端的孔径尺寸小于长形滑孔远离转动轴一端的孔径尺寸，且长形滑孔两端之间的内壁光滑过渡。
  8. 根据权利要求1所述的一种带助力的背推床架，其特征在于：所述靠背支架的两侧设有两个挡板组件，所述两个挡板组件与靠背支架之间均连接有伸缩组件，所述的伸缩组件用于调节两个挡板组件之间的宽度。
  9. 根据权利要求8所述的一种带助力的背推床架，其特征在于：所述的挡板组件包括沿靠背支架长度方向设置支撑杆和至少一个连接在支撑杆上且向上延伸的护板；所述靠背支架的两侧连接两组沿靠背支架宽度方向设置的伸缩管，两组伸缩管的外端分别与两个挡板组件的支撑杆连接；所述靠背支架两侧的底部均螺纹连接有锁紧螺丝，所述锁紧螺丝的内端与伸缩管的外侧壁相抵。
  10. 根据权利要求1所述的一种带助力的背推床架，其特征在于：所述固定架远离转动轴的一端的顶部两侧连接有两个向上延伸设置的顶块，在靠背支架处于折叠状态时，所述两个顶块的顶部与靠背支架的底部相抵，使靠背支架与固定架支架形成有夹角。
  11. 一种电动床，它包括床架，其特征在于：所述床架上连接有上述权利要求1所述的带助力的背推床架。
  12. 根据权利要求11所述的一种电动床，其特征在于：所述床架的纵向连接有至少两组束带，每组束带分别与床架和固定架连接，且每组束带位于床架尾部的部位连接有向上延伸的尾部挡板；所述床架的横向连接有至少一组束带，且每组束带位于床架两侧的部位均连接有向上延伸的侧部挡板。
PCT/CN2022/124990 2022-08-25 2022-10-13 一种带助力的背推床架及电动床 WO2024040715A1 (zh)

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