1. Field of the Invention
The present invention relates to a motorized bed and, more particularly, to a motorized bed available for a patient.
2. Description of the Related Art
A conventional medical bed comprises a main frame, a cushion mounted on the main frame, and a rocker handle mounted on the tail portion of the main frame to drive a gear mechanism to fold the bed so as to lift or lower the front portion of the cushion. Thus, the rocker handle is operated to drive the gear mechanism to lift the front portion of the cushion to facilitate the patient on the cushion taking the medicine, eating the food or reading the book. However, when the bed is folded, the front portion of the cushion is movable backward away from the wall and the cabinet, so that a user cannot use the cabinet easily and conveniently, thereby causing inconvenience to the user when taking items placed on the cabinet. In addition, the bed is folded and expanded by rotation of the rocker handle, so that the bed is operated manually, thereby wasting the manual energy.
In accordance with the present invention, there is provided a motorized bed, comprising a base frame, a linking frame movably mounted on the base frame, a first support frame pivotally mounted on the linking frame, two first links each pivotally mounted between the base frame and the first support frame, a second support frame pivotally mounted on the linking frame, a lift frame pivotally mounted on the second support frame, two second links each pivotally mounted between the linking frame and the lift frame, and a cushion mounted on the linking frame and having a first portion mounted on the first support frame to move therewith and a second portion mounted on the second support frame and the lift frame to move therewith.
The primary objective of the present invention is to provide a motorized bed that is movably closer to the wall.
Another objective of the present invention is to provide a motorized bed, wherein when the motorized bed is folded, the front portion of the cushion is movable forward to get closer to the cabinet, so that a user can use the cabinet easily and conveniently, thereby facilitating the user taking items placed on the cabinet in an energy-saving manner.
A further objective of the present invention is to provide a motorized bed, wherein when the motorized bed is folded, the rear portion of the cushion is lifted by the lift frame and supported by the second support frame and the second links, so that the user's legs are lifted and supported by the cushion at a determined height, thereby providing a comfortable sensation to the user.
A further objective of the present invention is to provide a motorized bed, wherein the motorized bed is operated automatically by the two drive cylinders, so that the user can operate the motorized bed easily and quickly in an energy-saving manner.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
Referring to the drawings and initially to
The base frame 10 is provided with two opposite guide tracks 11, and two extension brackets 13 each adjustably mounted on the respective guide track 11.
The linking frame 30 has a first portion provided with a first slide 35 movably mounted on the base frame 10 and a second portion provided with a second slide 350 movably mounted on the base frame 10. Each of the first slide 35 and the second slide 350 of the linking frame 30 is substantially H-shaped and provided with two rollers 36 rotatably mounted in the guide tracks 11 of the base frame 10 respectively so that the linking frame 30 is movable between the guide tracks 11 of the base frame 10. The second slide 350 of the linking frame 30 is provided with two pivot bases 37. The linking frame 30 has a mediate portion provided with a support bracket 31. The support bracket 31 of the linking frame 30 is provided with a plurality of pivot seats 34.
The first support frame 20 has a first portion 22 pivotally mounted on the support bracket 31 of the linking frame 30 by the respective pivot seats 34 of the linking frame 30 and a second portion provided with a resting bar 21 rested on the cushion 60. The first support frame 20 has a mediate portion provided with a transverse rod 23 and a substantially V-shaped pivot arm 24 having a first portion secured to the transverse rod 23.
A drive cylinder 32 is mounted between the linking frame 30 and the first support frame 20 and has a first portion pivotally mounted on the support bracket 31 of the linking frame 30 and a second portion provided with a retractable rod 321 pivotally mounted on a second portion of the pivot arm 24 of the first support frame 20.
The second support frame 40 has a first portion 41 pivotally mounted on the support bracket 31 of the linking frame 30 by the respective pivot seats 34 of the linking frame 30 and a second portion 42 provided with a substantially V-shaped pivot arm 43.
A drive cylinder 33 is mounted between the linking frame 30 and the second support frame 40 and has a first portion pivotally mounted on the support bracket 31 of the linking frame 30 and a second portion provided with a retractable rod 331 pivotally mounted on the pivot arm 43 of the second support frame 40.
The lift frame 50 has a first portion 51 pivotally mounted on the second portion 42 of the second support frame 40 and a second portion provided with a resting bar 52 rested on the cushion 60. The resting bar 52 of the lift frame 50 is provided with two pivot bases 53.
Each of the two first links 12 has a first portion pivotally mounted on the base frame 10 and a second portion pivotally mounted on the first portion of the cushion 60.
Each of the two second links 38 has a first portion pivotally mounted on the second slide 350 of the linking frame 30 by the respective pivot base 37 of the linking frame 30 and a second portion pivotally mounted on the resting bar 52 of the lift frame 50 by the respective pivot base 53 of the lift frame 50.
In operation, referring to
In addition, when the retractable rod 331 of the drive cylinder 33 is expanded outwardly, the pivot arm 43 of the second support frame 40 is pushed upwardly by the retractable rod 321 of the drive cylinder 32, so that the second support frame 40 is pivoted upwardly relative to the linking frame 30 to lift the lift frame 50 which lifts the second links 38. At this time, the second (or rear) portion of the cushion 60 is lifted by the lift frame 50 and supported by the second support frame 40 and the second links 38 as shown in
On the contrary, when the two drive cylinders 32 and 33 are folded, the first support frame 20, the second support frame 40 and the lift frame 50 are returned to the original position where the first support frame 20, the second support frame 40 and the lift frame 50 are in line with each other, so that the cushion 60 is expanded in a straight manner as shown in
As shown in
Accordingly, when the motorized bed is folded, the front portion of the cushion 60 is movably forward to get closer to the cabinet, so that a user can use the cabinet easily and conveniently, thereby facilitating the user taking items placed on the cabinet in an energy-saving manner. In addition, when the motorized bed is folded, the rear portion of the cushion 60 is lifted by the lift frame 50 and supported by the second support frame 40 an the second links 38, so that the user's legs are lifted and supported by the cushion 60 at a determined height, thereby providing a comfortable sensation to the user. Further, the motorized bed is operated automatically by the two drive cylinders 32 and 33, so that the user can operate the motorized bed easily and quickly in an energy-saving manner.
Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.
Number | Name | Date | Kind |
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6851144 | Wang | Feb 2005 | B2 |