Patent Application
20230016845
The present invention relates to a connecting device for a bed frame, and more particularly to the connecting device for a push rod of the bed frame which is connected flexibly and is packed at a low package cost.
Referring to
Thereby, the linear push rod motor 8 produces a linear pushing force to drive the two fixed coupling sheets 7 via a push rod 9 so that the bedside drive rod 2 or the bed-end drive rod 3 is pushed to rotate via the four support posts 4, thus producing an output torque to rotatably lift or descend the hospital bed.
The two fixed coupling sheets 7 are stamped in a fixed length so it is applicable for the linear push rod motor or the manual operated movable push rod, but it has a length of 140 mm, thus increasing a package size and cost. In addition, the two fixed coupling sheets 7 cannot operate when being used for the full-automatic hospital bed, thus having a large package size and high package cost.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary objective of the present invention is to provide a connecting device for a push rod of a bed frame by which the fixing sheet and the coupling sheet are connected based on the using requirements and are detachable in a packing process so that a size of the bedside drive rod and the bed-end drive rod 30 is reduced, thus reducing package size and package cost and facilitating the packing process.
Another objective of the present invention is to provide a connecting device for a push rod of a bed frame by which is maintained easily by using the multiple first and second locking elements.
To obtain the above objective, a connecting device for a push rod of a bed frame provided by the present invention is configured to connect a bedside drive rod and a bed-end drive rod of the bed frame, and the bed frame includes a body and at least one movable transmission mechanism connected on the body, the at least one movable transmission mechanism includes the push rod, and an end of the push rod is movably connected on the connecting device. The connecting device contains: a fixing sheet, a coupling sheet, and at least one first locking element.
The fixing sheet includes a first connection orifice defined on an end of the fixing sheet and fitted with the bedside drive rod or the bed-end drive rod, and at least one first lock orifice away from the first connection orifice.
The coupling sheet includes at least one second lock orifice formed on a first end of the coupling sheet and corresponding to the at least one first lock orifice, and a joining portion formed on a second end of the coupling sheet and away from the at least one second lock orifice so as to connect with the push rod of the at least one movable transmission mechanism.
The at least one first locking element is inserted through the at least one first lock orifice of the fixing sheet and the at least one second lock orifice of the coupling sheet to connect the fixing sheet and the coupling sheet.
With reference to
Referring to
The fixing sheet 40 includes a first connection orifice 41 defined on an end thereof and fitted with the bedside drive rod 20 or the bed-end drive rod 30, at least one first lock orifice 42 away from the first connection orifice 41, and a second connection orifice 43 is adjacent the at least one first lock orifice 42 of the fixing sheet 40. The fixing sheet 40 is fitted on the bed-end drive rod 30 or the bedside drive rod 20 by ways of the first connection orifice 41 and is fixed in a welding manner. The fixing sheet 40 is formed in an arcuate water drop shape so as to avoid injuring user's hand(s).
In this embodiment, there are two first lock orifices 42 of the fixing sheet 20. The second connection orifice 43 defined between the two first lock orifices 42 of the fixing sheet 40.
The coupling sheet 50 including at least one second lock orifice 51 formed on a first end thereof and corresponding to the at least one first lock orifice 42, a joining portion 52 formed on a second end of the coupling sheet 50 and away from the at least one second lock orifice 51 so as to connect with the push rod 81 of the at least one movable transmission mechanism 80, wherein the joining portion 52 is an elongated hole so as to adjust an connection angle of the coupling sheet 50. The coupling sheet 50 is formed in an elongated arc shape so as to avoid injuring the user's hand, wherein a length of the coupling sheet 50 is more than a length of the fixing sheet 40.
The coupling sheet 50 includes a column 53 extending beside the at least one second lock orifice 51 and received in the second connection orifice 43, such that the coupling sheet 50 is connected with the fixing sheet 40. Thereafter, the multiple first locking elements 60 are connected with the coupling sheet 50 and the fixing sheet 40, thus connecting the coupling sheet 50, the fixing sheet 40, and the multiple first locking elements 60. A cross section of the column 53 and the second connection orifice 43 are circular, irregular, oval or polygonal, such as triangular, quadrangular, or hexagonal, thus connecting the column 53 with the second connection orifice 43 securely.
The length of the fixing sheet 40 is 80 mm, and the length of the coupling sheet 50 is 99.5 mm. To comply with different sizes of the push rod, the length of the coupling sheet 50 is 134.5 mm. Preferably, the length of the coupling sheet 50 is changeable based on different using requirements.
The connecting device 100 further comprises multiple washers 61 and multiple first screw nuts 62. In assembly, the multiple first locking elements 60 are inserted through the at least one first lock orifice 42 of the fixing sheet 40, the multiple washers 61 are fitted with the multiple first locking elements 60, and the multiple first locking elements 60 are screwed with the multiple first screw nuts 62 via the at least one second lock orifice 51, such that the multiple washers 61 enhance friction between the fixing sheet 40 and the coupling sheet 50, thus connecting the fixing sheet 40 and the coupling sheet 50 securely. Preferably, the column 53 and two first locking elements 60 are configured to avoid a sliding of the fixing sheet 40 and the coupling sheet 50.
The bed frame 10 includes two parallel posts 12, a bedside stem 13, and a bed-end stem 14 parallel to the bedside stem 13, wherein the two parallel posts 12, the bedside stem 13, and the bed-end stem 14 are connected to form the body 11.
The bedside drive rod 20 is connected on a front end of each of the two parallel posts 12. The bedside drive rod 20 includes an abutting block 21 and two support shanks 22 extending from two sides of the bedside drive rod 20. The bed-end drive rod 30 is connected with a middle section of each of the two parallel posts 12, and the bed-end drive rod 30 includes a contact protrusion 31 and two locking pillars 32 extending from two sides of the bed-end drive rod 30.
Referring to
As shown in
The hospital bed is manually operated, semi-automatically operated or automatically operated. When the hospital bed is manually operated or is semi-automatically operated, the coupling sheet 50 of the connecting device 100 is connected on the fixing sheet 40, and the respective inverted U-shaped positioning seat 70 is fixed on the bedside stem 13, as illustrated in
With reference to
Referring to
The fixing sheet 40 and the coupling sheet 50 are connected based on the using requirements and are detachable in a packing process so that a size of the bedside drive rod 20 and the bed-end drive rod 30 is reduced, as illustrated in
It is to be noted that the fixing sheet and the coupling sheet of the connecting device are applicable for the manual hospital bed, and the manual hospital bed contains a manual connection lever, such as a swing lever (not shown) to replace the linear push rod motor of
While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.
