Flexible universal joint

A flexible and screw technology, used in elastic couplings, mechanical equipment, pivot connections, etc., can solve the problems of complex, single, easy to wear, loose and fall off the rigid universal joint manufacturing process, and achieve a simple structure, not easy to Wear, steering flexibility

Active Publication Date: 2011-06-22
BEIJING TINAVI MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems that the rigid universal joint commonly used in the prior art is complex in manufacturing process, and each part is easy to wear, loosen and fall off during use, while the existing hyperbolic rod-type hollow flexible hinge i

Method used

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Embodiment Construction

[0025] The present invention will be described below with reference to the accompanying drawings.

[0026] figure 2 It is a preferred structural schematic diagram of the flexible universal joint of the present invention, which is used to connect the connecting part of the first mechanical part and the connecting part of the second mechanical part. The flexible universal joint includes a spring 4, a first screw 5 and a second mechanical part. Screw 6, wherein, the schematic structural diagram of spring 4 is as follows image 3 As shown, the structural schematic diagram of the first screw 5 and the second screw 6 is as follows Figure 4 shown. The spring 4 is an extension spring, including the left, middle and right sections that are continuously distributed in sequence, and is an hourglass type with a thin middle section, a thick left section and a thick right section, that is, the spring 4 is an hourglass stretch with a thin middle and thick sides. Spring, the left and rig...

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Abstract

The invention relates to a flexible universal joint comprising a spring, a first screw and a second screw, wherein the spring is an extension spring which comprises a left segment, a middle segment and a right segment which are continuously and sequentially distributed and take the shape of an hourglass with a thin middle and thick left and right segments; the thread end of the first screw is spirally connected with the left segment of the extension spring; and the thread end of the second screw is spirally connected with the right segment of the extension spring. The flexible universal jointprovided by the invention can transmit power at variable angles in the range of designing rotating torque, can be used for the flexible hinge joint of mechanical parts and has the advantages of simple structure, turning flexibility, shock resistance, difficulty in wear, no looseness and shedding and the like.

Description

technical field [0001] The invention relates to a mechanical connecting device, in particular to a flexible universal joint, which can perform variable-angle power transmission within the designed rotational torque range, and can also be used for connecting flexible hinges of mechanical parts. Background technique [0002] The universal joint is an important basic part in the mechanical field. It is a mechanism for realizing variable-angle power transmission and a device for changing the direction of the transmission axis. At present, rigid universal joints are widely used in the mechanical field, such as figure 1 The cross shaft type rigid universal joint shown is composed of a cross shaft 1, two universal joint forks 2 and four needle roller bearings 3, etc. The holes on the two universal joint forks 2 are respectively sleeved on the two pairs of journals of the cross shaft 1, so that when the driving shaft rotates, the driven shaft can rotate along with it in different a...

Claims

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Application Information

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IPC IPC(8): F16D3/16F16C11/12
Inventor 林鸿
Owner BEIJING TINAVI MEDICAL TECH
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