JPH0742351Y2 - Lifting mechanism for beds - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting mechanism for a bed or the like in which a main frame can be vertically lifted.

[0002]

2. Description of the Related Art Conventionally, a bed or the like has been provided with a floor movement adjusting mechanism having various functions so as to be used for the convenience of treatment, medical treatment and nursing.

[0003]

Among the floor movement adjusting mechanisms, the mechanism for vertically raising and lowering the floor is very convenient for patients, doctors, and caregivers in treatment, medical treatment, and nursing. However, in the case where the leg part is formed by a screw shaft so that it can expand and contract, and the gear mechanism is applied to its driving force transmission mechanism, the structure is quite complicated, the number of parts is large, high processing accuracy is required, and the weight is also high. The drawback is that it will increase.
The present invention has been made in view of the above problems, and an object thereof is to provide a lifting mechanism for a bed or the like, the structure of which is further simplified.

[0004]

In order to solve the above-mentioned problems, the present invention has a guide rail provided upright on a base frame of a bed or the like so that the main frame can be slid up and down through a protrusion. A pair of support arms are rotatably attached to the base frame at predetermined intervals, and the support arms are formed at right angles to each other.
Of the high and low links consisting of long and short arms, the long arm
While connecting each, horizontal between the short arms by the activation unit
The long and short arms are connected by a drive rod that moves in the axial direction.
Hold the intersection point of the main frame hanging down
Rotatably attached to the drive unit to move the drive rod in the horizontal axis direction.
The long arm and the support arm in the high and low link
Mainly by moving the high and low links together around the knot
The feature is that the frame is moved up and down . Further, the present invention is constructed such that a guide rail is erected on a base frame of a bed or the like, and a main frame is slidably moved up and down via a rolling member. Support arms are rotatably attached and formed at right angles to each other
Of the high and low links composed of short and long arms,
While connecting the long arms respectively, between the short arms by the activation unit
Connected by a driving rod that moves in the horizontal axis direction, the long and short
The intersection of the arms of the
The drive rod is attached to the holding part so that it can rotate,
In the high and low links
The high and low links are interlocked and displaced around the connection point of
It is characterized in that the in-frame is moved up and down .

[0005]

[Operation] When the drive rod is moved in the horizontal axis direction by an appropriate starting portion to move the main frame upward, displacement drive force is exerted from the drive rod to the short arm of the high-low link, and the high-low link of the long and short arms moves. Attempts to rotate around the intersection. Then, since this turning force is added to the support arm from the long arm, the high-low link pivots around the connection point between the long arm and the support arm with this support arm as a support, and the main frame of the main frame through the intersection point. The holding part rises. As a result, the main frame slides up along the guide rail via the protrusion.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an elevating mechanism for a bed or the like according to the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 indicates a bed, and the bed 1 is provided with an elevating mechanism 2.
That is, in the lifting mechanism 2, the guide rail 4 is vertically installed on the base frame 3 of the bed 1, and the main frame 5 is provided on the guide rail 4 with the protrusions 6.
It is configured so that it can be slid up and down via the (see FIG. 2). A pair of support arms 7 are rotatably attached to the base frame 3 at a predetermined interval.
In addition, among the long and short arms formed at right angles forming the high-low link 8, the longer one of the long arms 9 is connected, while the short one of the short arms 10 is moved in the horizontal axis direction by an appropriate starting portion.
The operating drive rod 11 is connected to enable the short arms 10 to be interlocked with each other, and the intersection 12 of the long and short arms of the high / low link 8 is rotatable to the holding portion 13 suspended from the main frame 5. It is installed. In addition,
Instead of the protrusion 6 provided on the main frame 5, it is possible to apply a roller member.

Next, the operation of the lifting mechanism 2 in the bed 1 as described above will be described. When the drive rod 11 is moved in the horizontal axis direction by an appropriate starting portion for moving the main frame 5 upward, a displacement driving force is exerted on the short arm 10 of the high / low link 8, and the high / low link 8 is attached to the main frame 5
A force for rotating the holding portion 13 around the intersection 12 of the long and short arms of the high-low link 8 is generated. Then, this turning force is applied to the support arm 7 from the long arm 9, so that the high-low link 8 rotates around the connection point between the long arm 9 and the support arm 7 with the support arm 7 as a support, and the intersection point portion. The holding portion 13 of the main frame 5 rises together with 12. This allows
The main frame 5 slides up along the guide rail 4 via the protrusion 6 (see FIG. 3).

[0008]

As described above, according to the present invention, since the structure is simple, the processing and assembling steps are easy, the production cost can be suppressed, and there are few failures.

[0009]

[Brief description of drawings]

FIG. 1 is a side view of a bed to which a lifting mechanism according to the present invention is applied.

FIG. 2 is a sectional view taken along line AA shown in FIG.

FIG. 3 is an operation explanatory view of a lifting mechanism in a bed or the like according to the present invention.

[Explanation of symbols]

 1 Bed 2 Lifting Mechanism 3 Base Frame 4 Guide Rail 5 Main Frame 6 Projection 7 Support Arm 8 High / Low Link 9 Long Arm 10 Short Arm 11 Drive Rod 12 Intersection 13 Holding Section

Claims (2)

[Scope of utility model registration request] 1. A base frame for a bed or the like,
A guide rail is erected, a main frame is configured to be slidable up and down via a protrusion, and a pair of support arms are rotatably attached to the base frame at predetermined intervals, and these support arms are Long and short formed at right angles to each other
Of the high and low links composed of the arms of the
While connecting each, the short arm between the short arms in the horizontal axis direction
The long and short arms are connected by a driving rod
Part to the holding part that is hung from the main frame.
Movably mounted to operate the drive rod in the horizontal axis direction.
Let me connect the long arm and the support arm in the Hi-Lo link
Main frame by moving the high and low links together
An elevating mechanism for a bed or the like, which is configured to elevate and lower the room. 2. A base frame for a bed or the like,
The guide rail is erected, and the main frame is configured to be slidable up and down via the rolling member, and the base frame is
A pair of support arms are rotatably attached at predetermined intervals,
These support arms have long lengths formed at right angles to each other.
Of the high and low links consisting of short arms, the long arm is
While connecting each, the short arm is moved horizontally by the starting part.
It is connected by a driving rod that moves in the opposite direction to connect the long and short arms.
Attach the dots to the holding part that is hung on the main frame.
Rotatably attached to move the drive rod in the horizontal axis direction
Allow the long arm and the support arm to
The high and low links are displaced together around the
A lifting mechanism for a bed or the like, which is configured to lift and lower the boom .