The present invention relates to electric beds and more particularly, to an electric bed capable of pushing the waist of the user.
Many electric beds have a swingable back portion, letting the user effortlessly change the posture thereof between a sitting posture and a flat lying posture. Some electric beds even further have a liftable or bendable leg portion or a liftable head portion, letting the user adjust the sitting or lying posture thereof to the most comfortable condition according to the demands of the user. However, the presently available electric beds are not capable of pushing the waist of the user, which means no matter the user sits or flat lies on the conventional electric beds, the waist of the user is not supported effectively, so that the waist muscle stays in the tense and systolic condition. Alternatively, even the conventional electric bed has the waist-pushing function, the effect of supporting the waist of the user is not good enough and not conforms to ergonomics. The waist of the user will be damaged after a long-term accumulation.
It is a primary objective of the present invention to provide an electric bed which is capable of pushing the waist of the user, providing good support to the waist of the user.
To attain the above objective, the present invention provides an electric bed which includes a base, a back frame, a first actuator, a butt frame, and a second actuator. A rear end of the back frame is attached to the base in a way that the back frame is swingable. The first actuator is disposed between the base and the back frame for driving the back frame to swing. The butt frame is located in back of the back frame. A rear end of the butt frame is attached to the base in a way that the butt frame is swingable. The second actuator is disposed between the base and the butt frame for driving the butt frame to swing.
As a result, the electric bed of the invention not only enables the user to change the posture thereof between sitting and flat lying postures through the swinging of the back frame, but also effectively supports the waist of the user through the swinging of the butt frame, causing the sitting or lying posture of the user conform to ergonomics, thereby preventing the waist of the user from hurt by unhealthy posture.
Referring to
The base 20 is approximately a rectangular frame which is an assembly of a plurality of rods connected with each other. The base 20 is provided at four corners thereof with four supporting feet 22 respectively for being abutted on the floor.
The back frame 30 has a back plate 32, a back-plate supporter 34, a first downward link 36 and a first connecting link 38, as shown in
The first actuator 40 has a first cylinder body 42 and a first piston rod 44. The first piston rod 44 is inserted in the first cylinder body 42 and capable of being frontward extended out from the first cylinder body 42 or retracted back, so that the first actuator 40 can be extended or shortened, thereby driving the back frame 30 to swing upwardly or downwardly. In this embodiment, the front end of the first actuator 40, i.e. the front end of the first piston rod 44, is pivotably attached to the first downward link 36 of the back frame 30; the rear end of the first actuator 40, i.e. the rear end of the first cylinder body 42, is pivotably attached to the base 20.
The butt frame 50 is located in back of the back frame 30, and has a butt plate 52, a butt-plate supporter 54 and a second downward link 56, as shown in
The second actuator 60 has a second cylinder body 62 and a second piston rod 64. The second piston rod 64 is inserted in the second cylinder body 62 and capable of being frontward extended out from the second cylinder body 62 or retracted back, so that the second actuator 60 can be extended or shortened, thereby driving the butt frame 50 to swing between a horizontal position P1 as shown in
Besides, as shown in
The following is the illustration of the operation of the electric bed 10 of the invention. When the electric bed 10 is in the original condition, the back frame 30, the butt frame 50, the thigh frame 72 and the shank frame 74 are appeared in the horizontal condition as shown in
When the user wants to lift the back thereof, the user controls the first actuator 40 to be extended as shown in
When the user wants to bend the knees thereof at the lying posture or sitting posture, the user controls the third actuator 76 to be shortened as shown in
As a result, the electric bed 10 of the present invention has such special structural design that the butt frame 50 can swing upwardly, thereby providing the function of pushing the waist of the user, so that the waist of the user with the sitting posture can be effectively supported, thereby prevented from hurt by unhealthy posture. In additional, when the user flat lies on the electric bed 10, the butt frame 50 can stretch the waist muscle of the user. Besides, the swinging angel of the butt frame 50 can be adjusted according to the demands of the user, so that the pushing-waist function of the butt frame 50 can maintain the user at the comfortable posture to conform with ergonomics. On the other hand, when the electric bed 10 of the invention is used to push the waist of the user by the butt frame 50, the back frame 30 can be additionally functioned to swing upwardly and downwardly, for lifting the back of the user and backward bending the waist of the user.
Based on the spirit of the invention, the electric bed 10 of the invention may be modified. For example, the first and second actuators 40, 60 may be other kinds of actuator, such as pneumatic cylinders, hydraulic cylinders, or electric motors. Besides, the positions of the first cylinder body 42 and the first piston rod 44 of the first actuator 40 can be exchanged, and the positions of the second cylinder body 62 and the second piston rod 64 of the second actuator 60 can be exchanged. For example, the first cylinder body 42 and the first piston rod 44 of the first actuator 40 can be pivotably attached to the first downward link 36 of the back frame 30 and the base 20 respectively, and the second cylinder body 62 and the second piston rod 64 of the second actuator 60 can be pivotably attached to the second downward link 56 of the butt frame 50 and the base 20 respectively, as long as the length of the first and second actuators 40, 60 can be changed. The connection between the second actuator 60, the butt frame 50 and the base 20 can be modified in a way that when the second actuator 60 is shortened, it drives the butt frame 50 to swing from the horizontal position P1 to the inclined position P2. The structure of the butt frame 50 can be modified, such as having no such second downward link 56.
The invention 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 invention, 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.
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106215571 | Oct 2017 | TW | national |
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Number | Date | Country | |
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20190117484 A1 | Apr 2019 | US |