CN2918863Y

CN2918863Y - Universal transmission gear

Info

Publication number: CN2918863Y
Application number: CN 200620043872
Authority: CN
Inventors: 钱品兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-07-13
Filing date: 2006-07-13
Publication date: 2007-07-04
Anticipated expiration: 2016-07-13

Abstract

The utility model relates to a mechanical transmission device, in particular to a universal gearing in transmission structures such as instep frame on medical bed, comprising a universal sleeve, a driving connecting rod, a handle connecting rod and a pin. The driving connecting rod (5) is connected in the universal sleeve (4) by the pin (6). The mechanical transmission device is characterized in that a central via (2) is arranged at one end of the handle connecting rod (1), wherein a pin (3) is positioned in the central via (2), and the pin (3) is fixedly connected with the universal sleeve (4). The central via (2) has the characteristics of longer diameter at the two ends and shorter diameter in the middle. Compared with the prior art, the utility model has the advantages of simple structure, convenient usage, high reliability, big transmission torsion, easy manufacture, low cost and strong practicability, and thus can be applied in the field of mechanical universal transmission device, more particularly the universal transmission device in transmission structure such as driving casing for supporting hands and backs on medical bed.

Description

Universal driving device

[technical field]

The utility model relates to the universal driving device in the drive mechanisms such as driving the instep frame on a kind of mechanical transmission, particularly medical bed.

[background technique]

Driving instep portion's bed board of existing medical bed etc. or the lifting of whole bed, adopt hand screw mandrel to drive mostly, because the variation driveshaft of lifting process angle location fulcrum and crank handle inter-module form the angle of dynamic change, so universal drive mechanism that adapts to the angle dynamic change of essential installation between driveshaft main shaft and handle.Existing universal transmission mechanism is more to be to adopt moulding to make, and its major advantage is: easy to use, and ensuring smooth transmission.But also there are many deficiencys in this universal transmission mechanism: one, owing to be injection-molded article, so mechanical strength is low, the normal situation that damage occurs in the use; Its two, the manufacturing process complexity, the cost height, its three, transmit that torsion is big, poor reliability.

[summary of the invention]

The utility model is in order to overcome above-mentioned deficiency, provide a kind of simple in structure, with low cost, easily manufactured, transmit that torsion is big, the universal driving device of reliable performance.

For achieving the above object, design a kind of universal driving device, comprise universal sleeve, drive connecting rod, handle connecting rod, bearing pin, driving connecting rod 5 adopts bearing pin 6 to be connected in the universal sleeve 4, one end of handle connecting rod 1 has central through bore 2, is installed with bearing pin 3 in the central through bore 2, bearing pin 3 fixedly connected universal sleeves 4, described central through bore 2 is that the aperture, two ends is big, and median pore radius is little.

Handle connecting rod 1 of the present utility model can radially rotate around bearing pin 3, and handle connecting rod 1 also can be around pin 3 axial rotation simultaneously.

The utility model is compared with prior art, simple in structure, easy to use, good reliability, transmission torsion is big, and the utility model manufacturing is simple, cost is low, practical, be widely used in mechanical universal driving device field, particularly relate to such as the universal driving device that drives on the medical bed in the drive mechanism such as instep frame.

[description of drawings]

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the plan view of Fig. 1.

Fig. 3 is the structural representation of handle connecting rod of the present utility model.

Fig. 4 is the plan view of Fig. 3.

Fig. 5 radially rotates schematic representation for the handle connecting rod around bearing pin.

Fig. 6 is that the handle connecting rod is around bearing pin axial rotation schematic representation.

Referring to Fig. 1, Fig. 3,1 is the handle connecting rod, and 2 is central through bore, and 3 is bearing pin, and 4 is universal sleeve, and 5 for driving connecting rod, and 6 is bearing pin, and 7 is intermediate hole, and 8 is two stomidiums.

[embodiment]

Referring to Fig. 1, Fig. 3, drive connecting rod 5 and adopt bearing pin 6 to be connected in the universal sleeve 4, an end of handle connecting rod 1 has central through bore 2, the aperture of two stomidiums 8 of central through bore 2 is big, the aperture of its intermediate hole 7 is little, is installed with bearing pin 3 in the central through bore 2, bearing pin 3 fixedly connected universal sleeves 4; This manufacturing technology is still more clearly concerning those skilled in the art.

Claims

1. universal driving device, comprise universal sleeve, drive connecting rod, handle connecting rod, bearing pin, driving connecting rod (5) adopts bearing pin (6) to be connected in the universal sleeve (4), an end that it is characterized in that handle connecting rod (1) has central through bore (2), be installed with bearing pin (3) in the central through bore (2), the fixedly connected universal sleeve of bearing pin (3) (4), described central through bore (2) is that the aperture, two ends is big, median pore radius is little.