US20190021511A1 - Electric bed - Google Patents
Electric bed Download PDFInfo
- Publication number
- US20190021511A1 US20190021511A1 US15/703,254 US201715703254A US2019021511A1 US 20190021511 A1 US20190021511 A1 US 20190021511A1 US 201715703254 A US201715703254 A US 201715703254A US 2019021511 A1 US2019021511 A1 US 2019021511A1
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- United States
- Prior art keywords
- supporting rack
- rack
- back supporting
- slider
- push rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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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
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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
- A47C20/08—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously
- A47C20/10—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously using rods
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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
- A47C20/08—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously
Definitions
- the present disclosure relates to an electric bed and more particularly, to an electric bed having a function of uplifting an individual's head.
- Many conventional electric beds having swingable back supporting portions enable a user to sit or lie down easily and effortlessly. Some of the conventional electric beds are further capable of lifting up or down an individual's legs and/or head so as to allow a user to sit or lie down in the most comfortable posture according to his/her actual need.
- a commercially available electric bed capable of lifting up and down an individual's head has an operation that lifting up of the individual's back is performed after lifting up of the individual's head. That is to say, when the individual's back is lifted up, the individual's head has already been lifted up.
- this kind of electric bed cannot satisfy the requirement of a user if he/she only wants to lift up his/her back.
- a conventional electric bed only capable of lifting up an individual's back also cannot satisfy a user's requirement if he/she intends to lift up his/her head in the future.
- the present disclosure has been accomplished in view of the above-noted circumstances. It is an objective of the present disclosure to provide an electric bed, which can lift up and down an individual's back and head and has an operation that the lifting up of the individual's head is performed after lifting up of the individual's back.
- an electric bed which comprises a fixation rack, a back supporting rack, a head supporting rack, an actuator, a slider, a link, a push rod and a front extension rod.
- the back supporting rack is swingably disposed to a front end of the fixation rack and has a first extending portion.
- the head supporting rack is swingably disposed to a front end of the back supporting rack.
- the actuator has two ends disposed to the fixation rack and the back supporting rack respectively, such that the back supporting rack is driven by the actuator to swing relative to the fixation rack.
- the slider is disposed to the fixation rack in a way that the slider is forward and backward slidable relative to the fixation rack, the slider is provided with a cam portion.
- the link has two ends pivotally connected with the first extending portion of the back supporting rack and the slider respectively, such that the slider is moveable forward and backward along with the swing of the back supporting rack.
- the push rod is disposed to the back supporting rack in a way that the push rod is movable forward and backward, the push rod has a front end and a rear end.
- the front extension rod has two ends pivotally connected with the front end of the push rod and the head supporting rack.
- the electric bed is capable of lifting up and down an individual's back and head and has an operation that the lifting up of the individual's head is performed after lifting up of the individual's back.
- the head supporting rack can begin to swing upward relative to the back support rack while the back supporting rack swings upward to a certain extent. Therefore, if a user only wants to lift up his/her back, he/she only have to control the back supporting rack to swing within an extent that the head supporting rack does not start to swing. Conversely, if the user wants to lift up his/her back and head, he/she only have to control the back supporting rack to swing to an extent that the head supporting rack starts to swing.
- FIG. 1 is a top perspective view of an electric bed according to a preferred embodiment of the present disclosure, on which a bed board is placed;
- FIG. 2 is a bottom perspective view of the electric bed of FIG. 1 ;
- FIGS. 3 and 4 are partial enlarged bottom views of the electric bed of FIG. 1 ;
- FIG. 5 is a lateral plan view showing the electric bed of FIG. 1 ;
- FIG. 6 is a lateral plan view showing a motion (the head supporting rack does not swing upward relative to the back supporting rack) of the electric bed;
- FIG. 7 is a bottom view of the electric bed of FIG. 7 ;
- FIG. 8 is a lateral plan view showing another motion (the head supporting rack swing upward relative to the back supporting rack) of the electric bed.
- FIG. 9 is a bottom view of the electric bed of FIG. 8 .
- an electric bed 1 provided by a preferred embodiment of the present disclosure comprises a fixation rack 10 , a back supporting rack 20 , a head supporting rack 30 , an actuator 40 , a slider 50 , two links 60 , a push rod 70 , and a front extension rod 80 .
- a bed board 90 is placed on the electric bed 1 .
- the electric bed shown in FIG. 1 can be applied as a front part adapted to be cooperated with a rear part that may include such as a thigh supporting rack and a lower leg supporting rack for supporting a user's leg (now shown).
- the left side of FIG. 1 is defined as a forth direction or a front direction of the electric bed 1
- the right side of FIG. 1 is defined as a back direction or a rear direction of the electric bed 1 .
- the fixation rack 10 is constructed by a plurality of rods 12 connected together and includes four bed legs 14 and a slide slot 15 extending forward and backward.
- the fixation rack 10 stays stationary on a floor for being mounted and/or connected with the back supporting rack 20 or other components.
- the back supporting rack 20 is swingably disposed to a front end 16 of the fixation rack 10 and has a stopping portion 21 , two first extending portions 22 , two second extending portions 24 , and two third extending portions 26 .
- Two clamped rollers 221 are disposed between two first extending portions 22 .
- Each of the second extending portions 24 is provided with an elongated groove 241 .
- each of the first extending portions 24 and the third extending portions 26 has, but not limited to, a sickle-like shape, and the stopping portion 21 is embodied as a rod.
- the construction and shape of the stopping portion 21 may be varied depending on actual requirements.
- the head supporting rack 30 is swingably disposed to a front end 28 of the back supporting rack 20 and has two lower extending portions 32 .
- the stopping portion 21 is located under the head supporting rack 30 . When the head supporting rack 30 abuts against the stopping portion 21 , the head supporting rack 30 cannot swing downward relative to the back supporting rack 20 .
- the actuator 40 has two ends pivotally connected with the fixation rack 10 and the back supporting rack 20 , such that the back supporting rack 20 is driven by the actuator 40 to swing relative to the fixation rack 10 .
- the actuator 40 includes a cylindrical body 42 and a telescopic rod 44 extending forward from the cylindrical body 42 .
- the cylindrical body 42 is pivotally connected with the fixation rack 10
- an outer end of the telescopic rod 44 is pivotally connected between the two third extending portions 26 of the back supporting rack 20 .
- the actuator 40 is arranged in a reverse orientation.
- the telescopic rod 44 extends backwardly from the cylindrical body 42 , and the outer end of the telescopic rod 44 is pivotally connected with the fixation rack 10 and the cylindrical body 42 is pivotally connected with the third extending portions 26 .
- the back supporting rack 20 has no such third extending portions 26 , and the actuator 40 is pivotally connected with the other part of the back supporting rack 20 .
- the slider 50 is disposed to the fixation rack 10 in a way that the slider 50 is forward and backward slidable relative to the fixation rack, and is provided with a cam portion 52 .
- Each of the two links 60 has one end pivotally connected with the first extending portion 22 , and the other end pivotally connected with the slider 50 , such that the slider 50 is movable forward and backward along with the swing of the back supporting rack 20 .
- the two links 60 are pivotally connected with the slider 50 by a pin 65 that is slidably inserted through the slide slot 15 of the fixation rack 10 and the slider 50 . By means of the pin 65 that is reciprocally slidable in the slide slot 15 , the slider 50 can be moved accordingly.
- the push rod 70 is disposed to the back supporting rack 20 in a way that the push rod 70 is movable forward and backward.
- the push rod 70 has a front end 72 and a rear end 74 provided with a roller 741 that is capable of abutting against the cam portion 52 of the slider 50 .
- the push rod 70 is clamped between the clamped rollers 221 of the first extending portion 22 , as shown in FIG. 3 .
- the front extension rod 80 has a rear end pivotally connected with the front end 72 of the push rod 70 , and a front end pivotally connected with the lower extending portions 32 of the head supporting rack 30 .
- the rear end of the front extension rod 80 is connected with the front end 72 of the push rod 70 by a pin 85 that is reciprocally slidably inserted through the two extending portions 24 of the back supporting rack 20 and the elongated groove 241 .
- the connecting way between the push rod 70 and the front extension rod 80 is not limited to the foregoing and may be varied depending on actual requirements.
- the back supporting rack 20 may have no such two second extending portions 24 , and under this circumstance, the push rod 70 and the front extension rod 80 may be pivotally connected with the other part of the back supporting rack 20 .
- the head supporting rack 30 may have no such two lower extending portions 32 , and under this circumstance, the front end of the front extension rod 80 may pivotally connected with the other part the head supporting rack 30 .
- the bed board 90 includes a head plate 92 disposed on the head supporting rack 30 , a back plate 94 disposed on the back supporting rack 20 , and a hip plate 96 disposed on the fixation rack 10 .
- the head plate 92 is driven to swing by the head supporting rack 30
- the back plate 94 is driven to swing by the back supporting rack 20
- the hip plate 96 stays stationary.
- the bed board 90 may be further provided with a thigh plate, a lower leg plate, etc.
- the head plate 92 and the back plate 94 are horizontal and are substantially flush with the hip plate 96 , and the telescopic rod 44 does not extend outwardly from the cylindrical body 42 .
- the telescopic rod 44 extends forward from the cylindrical body 42 to push the third extending portions 26 , the back supporting rack 20 is then forced to swing upward relative to the fixation rack 10 , and simultaneously, the first extending portions 22 of the back supporting rack 20 pull the links 60 , such that the pin 65 slides in the slide slot 15 and the slider 50 is driven to move forward.
- the clamped rollers 221 clamp the push rod 70 to prevent the lateral movement of the push rod 70 and roll along an outer surface of the push rod 70 in such a way that the push rod 70 is movable forward and backward.
- the head supporting rack 30 is driven by the back supporting rack 20 to swing upward relative to the fixation rack 10 , the head supporting rack 30 still abuts against the stopping portion 21 and does not swing relative to the back supporting rack 20 since the roller 741 located at the rear end 74 of the push rod 70 has not yet abutted against the cam portion 52 .
- the swing amplitude of the head supporting rack 30 actually depends on the shape and/or the construction of the cam portion 52 . Further, the earlier the cam portion 52 comes into contact with the roller 741 , the earlier the head supporting rack 30 swings upward. It is to be noted that the back supporting rack 20 is continuously driven to swing upward relative to the fixation rack 10 while the head supporting rack 30 swings upward relative to the back supporting rack 20 .
- the electric bed 1 of the present disclosure can lift up and down an individual's back and head, and has an operation that lifting up of the individual's back is performed after lifting up of the individual's head. That is to say, when the back supporting rack 20 swings upward till the slider 50 abuts against the roller 741 , the head supporting rack 30 begins to swing upward relative to the back supporting rack 20 . Therefore, if a user only wants to lift up his/her back, he/she only have to control the back supporting rack 20 to swing on condition that the slider 50 does not come into contact with the roller 741 . Conversely, if the user wants to lift up his/her back and head, he/she only have to control the back supporting rack 20 to swing continuously till the slider 50 comes into contact with the roller 741 .
- the procedure that the electric bed 1 returns to the state shown in FIG. 5 from the state of FIG. 8 is substantially opposite to the foregoing. Specifically, the telescopic rod 44 starts to retract backward to the cylindrical 42 , the head supporting rack 30 then starts to swing downward relative to the back supporting rack 20 until the head supporting rack 30 abuts against the stopping portion 21 and thus cannot swing downward anymore. The back supporting rack 20 starts to swing downward relative to the fixation rack 10 as the telescopic rod 44 continuously retracts back into the cylindrical 42 , and finally returns to the state shown in FIG. 5 . It is to be noted that, the back supporting rack 20 swings downward relative to the fixation rack 10 while the head supporting rack 30 swings downward relative to the back supporting rack 20 .
- modifications to the structure of the electric bed 1 may be available.
- the two clamped rollers 221 can be omitted.
- the number of the lower extending portion 32 , the first extending portion 22 , the second extending portion 24 and the third extending portion 26 can be modified in accordance with the actual need.
- the roller 741 located at the rear end 74 of the push rod 70 can be omitted as long as the rear end 74 can abut against the cam portion 52 of the slider 50 .
- the connecting way between the link 60 and the slider 50 is not limited and may be varied depending on actual requirements.
- the fixation rack 10 may be provided with no such slide slot 15 , but be provided with a structure similar to a slider track for the slider 50 .
- the stopping portion 21 can be omitted, under this circumstance, the head supporting rack 30 may not swing downward excessively relative to the back supporting rack 20 as long as the cam portion 52 abuts against the roller 741 .
- the shape and the construction of the cam portion 52 can be modified in accordance with the actual need.
Abstract
An electric bed includes a fixation rack, a back supporting rack swingably disposed to the fixation rack, a head supporting rack swingably disposed to the back supporting rack, an actuator for driving the back supporting rack to swing relative to the fixation rack, a slider disposed to the fixation rack in a way that the slider is forward and backward slidable relative to the fixation rack and being provided with a cam portion, a link pivotally connected with the back supporting rack and the slider to allow the slider to move forward and backward along with the swing of the back supporting rack, a push rod disposed to the back supporting rack and being movable forward and backward, and a front extension rod pivotally connected with the push rod and the head supporting rack.
Description
- The present disclosure relates to an electric bed and more particularly, to an electric bed having a function of uplifting an individual's head.
- Many conventional electric beds having swingable back supporting portions enable a user to sit or lie down easily and effortlessly. Some of the conventional electric beds are further capable of lifting up or down an individual's legs and/or head so as to allow a user to sit or lie down in the most comfortable posture according to his/her actual need. However, a commercially available electric bed capable of lifting up and down an individual's head has an operation that lifting up of the individual's back is performed after lifting up of the individual's head. That is to say, when the individual's back is lifted up, the individual's head has already been lifted up. Thus, this kind of electric bed cannot satisfy the requirement of a user if he/she only wants to lift up his/her back. On the other hand, a conventional electric bed only capable of lifting up an individual's back also cannot satisfy a user's requirement if he/she intends to lift up his/her head in the future.
- The present disclosure has been accomplished in view of the above-noted circumstances. It is an objective of the present disclosure to provide an electric bed, which can lift up and down an individual's back and head and has an operation that the lifting up of the individual's head is performed after lifting up of the individual's back.
- To attain the above objective, the present disclosure provides an electric bed, which comprises a fixation rack, a back supporting rack, a head supporting rack, an actuator, a slider, a link, a push rod and a front extension rod. The back supporting rack is swingably disposed to a front end of the fixation rack and has a first extending portion. The head supporting rack is swingably disposed to a front end of the back supporting rack. The actuator has two ends disposed to the fixation rack and the back supporting rack respectively, such that the back supporting rack is driven by the actuator to swing relative to the fixation rack. The slider is disposed to the fixation rack in a way that the slider is forward and backward slidable relative to the fixation rack, the slider is provided with a cam portion. The link has two ends pivotally connected with the first extending portion of the back supporting rack and the slider respectively, such that the slider is moveable forward and backward along with the swing of the back supporting rack. The push rod is disposed to the back supporting rack in a way that the push rod is movable forward and backward, the push rod has a front end and a rear end. The front extension rod has two ends pivotally connected with the front end of the push rod and the head supporting rack. When the back supporting rack is driven to swing upward, the slider moves forward with the cam portion abutting against the rear end of the push rod to force the push rod to move forward relative to the back supporting rack. The front extension rod then moves forward relative to the back supporting rack to result in that the head supporting rack swings upward relative to the back supporting rack.
- With the foregoing structural features of the present disclosure, the electric bed is capable of lifting up and down an individual's back and head and has an operation that the lifting up of the individual's head is performed after lifting up of the individual's back. More specifically, the head supporting rack can begin to swing upward relative to the back support rack while the back supporting rack swings upward to a certain extent. Therefore, if a user only wants to lift up his/her back, he/she only have to control the back supporting rack to swing within an extent that the head supporting rack does not start to swing. Conversely, if the user wants to lift up his/her back and head, he/she only have to control the back supporting rack to swing to an extent that the head supporting rack starts to swing.
- The present disclosure will become more fully understood from the detailed description given herein below and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present disclosure, and wherein:
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FIG. 1 is a top perspective view of an electric bed according to a preferred embodiment of the present disclosure, on which a bed board is placed; -
FIG. 2 is a bottom perspective view of the electric bed ofFIG. 1 ; -
FIGS. 3 and 4 are partial enlarged bottom views of the electric bed ofFIG. 1 ; -
FIG. 5 is a lateral plan view showing the electric bed ofFIG. 1 ; -
FIG. 6 is a lateral plan view showing a motion (the head supporting rack does not swing upward relative to the back supporting rack) of the electric bed; -
FIG. 7 is a bottom view of the electric bed ofFIG. 7 ; -
FIG. 8 is a lateral plan view showing another motion (the head supporting rack swing upward relative to the back supporting rack) of the electric bed; and -
FIG. 9 is a bottom view of the electric bed ofFIG. 8 . - Referring to
FIGS. 1 and 2 , an electric bed 1 provided by a preferred embodiment of the present disclosure comprises afixation rack 10, aback supporting rack 20, ahead supporting rack 30, anactuator 40, aslider 50, twolinks 60, apush rod 70, and afront extension rod 80. Abed board 90 is placed on the electric bed 1. The electric bed shown inFIG. 1 can be applied as a front part adapted to be cooperated with a rear part that may include such as a thigh supporting rack and a lower leg supporting rack for supporting a user's leg (now shown). Hereunder the left side ofFIG. 1 is defined as a forth direction or a front direction of the electric bed 1, and the right side ofFIG. 1 is defined as a back direction or a rear direction of the electric bed 1. - The
fixation rack 10 is constructed by a plurality ofrods 12 connected together and includes fourbed legs 14 and aslide slot 15 extending forward and backward. Thefixation rack 10 stays stationary on a floor for being mounted and/or connected with theback supporting rack 20 or other components. - The
back supporting rack 20 is swingably disposed to afront end 16 of thefixation rack 10 and has a stoppingportion 21, two first extendingportions 22, twosecond extending portions 24, and two third extendingportions 26. Twoclamped rollers 221 are disposed between two first extendingportions 22. Each of the second extendingportions 24 is provided with anelongated groove 241. In this embodiment, each of the first extendingportions 24 and the third extendingportions 26 has, but not limited to, a sickle-like shape, and the stoppingportion 21 is embodied as a rod. The construction and shape of the stoppingportion 21 may be varied depending on actual requirements. - The
head supporting rack 30 is swingably disposed to afront end 28 of theback supporting rack 20 and has two lower extendingportions 32. The stoppingportion 21 is located under thehead supporting rack 30. When thehead supporting rack 30 abuts against the stoppingportion 21, thehead supporting rack 30 cannot swing downward relative to theback supporting rack 20. - The
actuator 40 has two ends pivotally connected with thefixation rack 10 and theback supporting rack 20, such that theback supporting rack 20 is driven by theactuator 40 to swing relative to thefixation rack 10. In this embodiment, theactuator 40 includes acylindrical body 42 and atelescopic rod 44 extending forward from thecylindrical body 42. Thecylindrical body 42 is pivotally connected with thefixation rack 10, and an outer end of thetelescopic rod 44 is pivotally connected between the two third extendingportions 26 of theback supporting rack 20. In other feasible embodiment, theactuator 40 is arranged in a reverse orientation. Under this circumstance, thetelescopic rod 44 extends backwardly from thecylindrical body 42, and the outer end of thetelescopic rod 44 is pivotally connected with thefixation rack 10 and thecylindrical body 42 is pivotally connected with the third extendingportions 26. In still another embodiment, theback supporting rack 20 has no such third extendingportions 26, and theactuator 40 is pivotally connected with the other part of theback supporting rack 20. - The
slider 50 is disposed to thefixation rack 10 in a way that theslider 50 is forward and backward slidable relative to the fixation rack, and is provided with acam portion 52. - Each of the two
links 60 has one end pivotally connected with the first extendingportion 22, and the other end pivotally connected with theslider 50, such that theslider 50 is movable forward and backward along with the swing of theback supporting rack 20. In this embodiment, the twolinks 60 are pivotally connected with theslider 50 by apin 65 that is slidably inserted through theslide slot 15 of thefixation rack 10 and theslider 50. By means of thepin 65 that is reciprocally slidable in theslide slot 15, theslider 50 can be moved accordingly. - The
push rod 70 is disposed to theback supporting rack 20 in a way that thepush rod 70 is movable forward and backward. Thepush rod 70 has afront end 72 and arear end 74 provided with aroller 741 that is capable of abutting against thecam portion 52 of theslider 50. Thepush rod 70 is clamped between the clampedrollers 221 of the first extendingportion 22, as shown inFIG. 3 . - The
front extension rod 80 has a rear end pivotally connected with thefront end 72 of thepush rod 70, and a front end pivotally connected with the lower extendingportions 32 of thehead supporting rack 30. In this embodiment, referring toFIG. 4 , the rear end of thefront extension rod 80 is connected with thefront end 72 of thepush rod 70 by apin 85 that is reciprocally slidably inserted through the two extendingportions 24 of theback supporting rack 20 and theelongated groove 241. When thepin 85 moves in theelongated groove 241, thepush rod 70 and thefront extension rod 80 moves forward and backward synchronously. In other feasible embodiment, the connecting way between thepush rod 70 and thefront extension rod 80 is not limited to the foregoing and may be varied depending on actual requirements. For example, the back supportingrack 20 may have no such two second extendingportions 24, and under this circumstance, thepush rod 70 and thefront extension rod 80 may be pivotally connected with the other part of theback supporting rack 20. Or, thehead supporting rack 30 may have no such two lower extendingportions 32, and under this circumstance, the front end of thefront extension rod 80 may pivotally connected with the other part thehead supporting rack 30. - The
bed board 90 includes ahead plate 92 disposed on thehead supporting rack 30, aback plate 94 disposed on theback supporting rack 20, and ahip plate 96 disposed on thefixation rack 10. Thehead plate 92 is driven to swing by thehead supporting rack 30, theback plate 94 is driven to swing by theback supporting rack 20, and thehip plate 96 stays stationary. In other feasible embodiment, thebed board 90 may be further provided with a thigh plate, a lower leg plate, etc. - As shown in
FIG. 5 , when the electric bed 1 is not in motion, thehead plate 92 and theback plate 94 are horizontal and are substantially flush with thehip plate 96, and thetelescopic rod 44 does not extend outwardly from thecylindrical body 42. Referring toFIGS. 6 and 7 , when the electric bed 1 is in motion, thetelescopic rod 44 extends forward from thecylindrical body 42 to push the third extendingportions 26, the back supportingrack 20 is then forced to swing upward relative to thefixation rack 10, and simultaneously, the first extendingportions 22 of theback supporting rack 20 pull thelinks 60, such that thepin 65 slides in theslide slot 15 and theslider 50 is driven to move forward. The clampedrollers 221 clamp thepush rod 70 to prevent the lateral movement of thepush rod 70 and roll along an outer surface of thepush rod 70 in such a way that thepush rod 70 is movable forward and backward. At this time, although thehead supporting rack 30 is driven by theback supporting rack 20 to swing upward relative to thefixation rack 10, thehead supporting rack 30 still abuts against the stoppingportion 21 and does not swing relative to theback supporting rack 20 since theroller 741 located at therear end 74 of thepush rod 70 has not yet abutted against thecam portion 52. Next, referring toFIGS. 8 and 9 , when thetelescopic rod 44 extends forward continuously from thecylindrical body 42, the back supportingrack 20 is continuously driven to swing upward relative to thefixation rack 10 till thecam portion 52 of theslider 50 abuts against theroller 74 located at therear end 74 of thepush rod 70, such that thepush rod 70 moves forward relative to theback supporting rack 20, theroller 741 rolls along thecam portion 52, and thepin 85 is simultaneously forced by thepush rod 70 to slide forward in theelongated groove 241. As a result, thefront extension rod 80 is driven to move forward relative to theback supporting rack 20 so as to force thehead supporting rack 30 to swing upward relative to theback supporting rack 20. In this regard, it can be understood that the swing amplitude of thehead supporting rack 30 actually depends on the shape and/or the construction of thecam portion 52. Further, the earlier thecam portion 52 comes into contact with theroller 741, the earlier thehead supporting rack 30 swings upward. It is to be noted that the back supportingrack 20 is continuously driven to swing upward relative to thefixation rack 10 while thehead supporting rack 30 swings upward relative to theback supporting rack 20. - As such, the electric bed 1 of the present disclosure can lift up and down an individual's back and head, and has an operation that lifting up of the individual's back is performed after lifting up of the individual's head. That is to say, when the back supporting
rack 20 swings upward till theslider 50 abuts against theroller 741, thehead supporting rack 30 begins to swing upward relative to theback supporting rack 20. Therefore, if a user only wants to lift up his/her back, he/she only have to control the back supportingrack 20 to swing on condition that theslider 50 does not come into contact with theroller 741. Conversely, if the user wants to lift up his/her back and head, he/she only have to control the back supportingrack 20 to swing continuously till theslider 50 comes into contact with theroller 741. - The procedure that the electric bed 1 returns to the state shown in
FIG. 5 from the state ofFIG. 8 is substantially opposite to the foregoing. Specifically, thetelescopic rod 44 starts to retract backward to the cylindrical 42, thehead supporting rack 30 then starts to swing downward relative to theback supporting rack 20 until thehead supporting rack 30 abuts against the stoppingportion 21 and thus cannot swing downward anymore. Theback supporting rack 20 starts to swing downward relative to thefixation rack 10 as thetelescopic rod 44 continuously retracts back into the cylindrical 42, and finally returns to the state shown inFIG. 5 . It is to be noted that, the back supportingrack 20 swings downward relative to thefixation rack 10 while thehead supporting rack 30 swings downward relative to theback supporting rack 20. - According to the technical features of the present disclosure, modifications to the structure of the electric bed 1 may be available. For instance, the two clamped
rollers 221 can be omitted. The number of the lower extendingportion 32, the first extendingportion 22, the second extendingportion 24 and the third extendingportion 26 can be modified in accordance with the actual need. Theroller 741 located at therear end 74 of thepush rod 70 can be omitted as long as therear end 74 can abut against thecam portion 52 of theslider 50. The connecting way between thelink 60 and theslider 50 is not limited and may be varied depending on actual requirements. Thefixation rack 10 may be provided with nosuch slide slot 15, but be provided with a structure similar to a slider track for theslider 50. The stoppingportion 21 can be omitted, under this circumstance, thehead supporting rack 30 may not swing downward excessively relative to theback supporting rack 20 as long as thecam portion 52 abuts against theroller 741. In this regard, it can be understood that the shape and the construction of thecam portion 52 can be modified in accordance with the actual need. - The disclosure being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the disclosure, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
Claims (8)
1. An electric bed comprising:
a fixation rack having a front end;
a back supporting rack swingably disposed to the front end of the fixation rack and having a first extending portion and a front end;
a head supporting rack swingably disposed to the front end of the back supporting rack;
an actuator having two ends disposed to the fixation rack and the back supporting rack respectively, such that the back supporting rack is driven by the actuator to swing relative to the fixation rack;
a slider disposed to the fixation rack in a way that the slider is forward and backward slidable relative to the fixation rack, the slider being provided with a cam portion;
a link having two ends pivotally connected with the first extending portion of the back supporting rack and the slider respectively, such that the slider is movable forward and backward along with the swing of the back supporting rack;
a push rod disposed to the back supporting rack in a way that the push rod is movable forward and backward, the push rod having a front end and a rear end; and
a front extension rod having two ends pivotally connected with the front end of the push rod and the head supporting rack respectively;
wherein when the back supporting rack is driven to swing upward, the slider moves forward with the cam portion abutting against the rear end of the push rod to force the push rod to move forward relative to the back supporting rack, the front extension rod then moves forward relative to the back supporting rack to result in that the head supporting rack swings upward relative to the back supporting rack.
2. The electric bed as claimed in claim 1 , wherein the first extending portion of the back supporting rack is provided with two clamped rollers, between which the push rod is clamped.
3. The electric bed as claimed in claim 1 , wherein the back supporting rack has a second extending portion provided with an elongated groove; the push rod is connected with the front extension rod by a pin that is reciprocally slidably inserted through the elongated groove.
4. The electric bed as claimed in claim 1 , wherein the back supporting rack has a stopping portion located under the head supporting rack; when the head supporting rack abuts against the stopping portion, the head supporting rack is prohibited from swinging downward relative to the back supporting rack.
5. The electric bed as claimed in claim 1 , wherein the fixation rack has a slide slot; the link is pivotally connected with the slider by a pin that is reciprocally slidably inserted through the slide slot.
6. The electric bed as claimed in claim 1 , wherein the rear end of the push rod is provided with a roller for abutting against the cam portion of the slider.
7. The electric bed as claimed in claim 1 , wherein the head supporting rack has a lower extending portion; one of the two ends of the front extension rod is pivotally connected with the lower extending portion of the head supporting rack.
8. The electric bed as claimed in claim 1 , wherein the back supporting rack has a third extending portion; one of the two ends of the actuator is pivotally connected with the third extending portion of the back supporting rack.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW106210860U TWM553151U (en) | 2017-07-24 | 2017-07-24 | Electric bed |
TW106210860 | 2017-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20190021511A1 true US20190021511A1 (en) | 2019-01-24 |
Family
ID=61229180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/703,254 Abandoned US20190021511A1 (en) | 2017-07-24 | 2017-09-13 | Electric bed |
Country Status (2)
Country | Link |
---|---|
US (1) | US20190021511A1 (en) |
TW (1) | TWM553151U (en) |
Cited By (9)
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US20210393042A1 (en) * | 2020-06-17 | 2021-12-23 | Star Seeds Co., Ltd. | Electric bed for being assembled and dismantled without using tool |
US11413201B2 (en) * | 2019-11-25 | 2022-08-16 | Guohong Zeng | Electric bed |
US20230000258A1 (en) * | 2021-06-30 | 2023-01-05 | Loctek Inc. | Foldable electric bed frame |
US20230200546A1 (en) * | 2021-12-23 | 2023-06-29 | Chuan-Hang Shih | Foldable electric bed |
US20230309702A1 (en) * | 2022-03-30 | 2023-10-05 | L&P Property Management Company | Adjustable Bed Base With Slotted Mounting Brackets |
US20230309703A1 (en) * | 2022-04-05 | 2023-10-05 | L&P Property Management Company | Adjustable Bed Base With Subframe For Lift And Tilt |
EP4298957A1 (en) * | 2022-06-28 | 2024-01-03 | PASS of Sweden AB | A frame structure and a frame assembly for a piece of furniture |
US20240023720A1 (en) * | 2022-07-21 | 2024-01-25 | Chuan-Hang Shih | Electric bed |
US11957248B2 (en) * | 2022-04-05 | 2024-04-16 | L&P Property Management Company | Adjustable bed base with subframe for lift and tilt |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112741447B (en) * | 2019-10-29 | 2022-12-30 | 林文鸿 | Electric bed |
TWI717287B (en) * | 2020-06-02 | 2021-01-21 | 廖家宏 | An u-shaped electric bed |
CN111743346B (en) * | 2020-06-11 | 2022-05-10 | 廖家宏 | U-shaped curve electric bed |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11413201B2 (en) * | 2019-11-25 | 2022-08-16 | Guohong Zeng | Electric bed |
US20210393042A1 (en) * | 2020-06-17 | 2021-12-23 | Star Seeds Co., Ltd. | Electric bed for being assembled and dismantled without using tool |
US20230000258A1 (en) * | 2021-06-30 | 2023-01-05 | Loctek Inc. | Foldable electric bed frame |
US11963618B2 (en) * | 2021-06-30 | 2024-04-23 | Flexispot, Inc. | Foldable electric bed frame |
US20230200546A1 (en) * | 2021-12-23 | 2023-06-29 | Chuan-Hang Shih | Foldable electric bed |
US20230309702A1 (en) * | 2022-03-30 | 2023-10-05 | L&P Property Management Company | Adjustable Bed Base With Slotted Mounting Brackets |
US11930932B2 (en) * | 2022-03-30 | 2024-03-19 | L&P Property Management Company | Adjustable bed base with slotted mounting brackets |
US20230309703A1 (en) * | 2022-04-05 | 2023-10-05 | L&P Property Management Company | Adjustable Bed Base With Subframe For Lift And Tilt |
US11957248B2 (en) * | 2022-04-05 | 2024-04-16 | L&P Property Management Company | Adjustable bed base with subframe for lift and tilt |
EP4298957A1 (en) * | 2022-06-28 | 2024-01-03 | PASS of Sweden AB | A frame structure and a frame assembly for a piece of furniture |
US20240023720A1 (en) * | 2022-07-21 | 2024-01-25 | Chuan-Hang Shih | Electric bed |
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