Patent Application
20150283331
The present invention relates to a tube coupler and particularly to a tube coupler clamping and positioning tool.
A conventional tube coupler clamping and positioning tool, please refer to
The clamping tightness of the pliable tube 5 on the rigid tube 6 through the tube coupler 4 via the conventional tube coupler clamping and positioning tool totally relies on user's feel of hands. Namely, the amount of applying force to make the clamping ends 3 clamp the tube coupler 4 and tighten the pliable tube 5 on the rigid tube 6 totally depends on user's experiences and habits.
Hence, in the event that the force of the tube coupler 4 tightening the pliable tube 5 is too strong and exceeds the structural strength of the rigid tube 6 or tube coupler 4, the rigid tube 6 could be deformed or even fractured to result in leakage of liquid flowing, or the tube coupler 4 could be directly ruptured. On the other hand, in the event that the tightening force is too small, the pliable tube 5 and rigid tube 6 could loosen off and separate to result in liquid leakage.
Thus, depending on user's habits and experiences to control the force of the tube coupler 4 to tighten the pliable tube 5 via the conventional tube coupler clamping and positioning tool is unreliable. Because the tightening force of the tube coupler 4 is affected by human factor and reliability suffers, it cannot fully meet use requirements. There is still room for improvement.
Therefore, the primary object of the present invention is to provide a tube coupler clamping and positioning tool to control the tightening force exerting to the pliable tube to avoid too strong or too weak tightening force that may result in fracture of the rigid tube, or rupture or loosening of the tube coupler.
The tube coupler clamping and positioning tool of the invention aims to tighten a tube coupler and couple a pliable tube onto a rigid tube, and comprises a first clamp arm, a second clamp arm and a screw fastening bar. The first clamp arm has a first coupling end and a first compression end. The second clamp arm has a second coupling end and a second compression end. The screw fastening bar has two thread sections formed in different helical directions. The first and second coupling ends are hinged together. The screw fastening bar runs through the first clamp arm and second clamp arm with the two thread sections threaded respectively in the first clamp arm and second clamp arm and the first and second compression ends opposing each other at a selected interval.
Thus, through a torsional wrench, the screw fastening bar can be wrenched to change the distance of the interval, thereby the first and second compression ends can clamp and tighten the tube coupler. With the torsional wrench, the output fastening force also can be controlled as desired to avoid too strong or too weak of the tightening force exerting to the tube coupler, thereby can prevent fracture of the rigid tube, or rupture or loosening of the tube coupler to meet use requirement.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.
Please refer to
The screw fastening bar 40 has two thread sections 41 and 42 formed in different helical directions, and a coupling cavity 401 at an outer end to be wedged by a general torsional wrench 70 (referring to
The second clamp arm 30 is fastened to a handgrip 60 which has a plurality of anti-skid flutes 61 formed on the surface to prevent slipping when in use to facilitate user's gripping. The handgrip 60 further has an indented curved surface 62 formed annularly on the surface to further enhance gripping steadiness. Moreover, the handgrip 60 and the screw fastening bar 40 can be located not on the same straight line, namely the handgrip 60 and screw fastening bar 40 are positioned at a skewed angle against each other to improve handling feel of user's hands when in use.
By means of the structure set forth above, through the two thread sections 41 and 42 formed in different helical directions, two fastening forces in different directions can be provided. Hence by wrenching the screw fastening bar 40, the interval 50 can be changed to varying sizes, and the first and second compression ends 22 and 32 of the first and second clamp arms 20 and 30 can tighten the tube coupler 10 as desired. When in use, please refer to
As a conclusion, by using the torsional wrench to control the output fastening force, the invention allows users to deliver a torsional force as desired, thus can avoid the problem of too strong or too weak tightening force under the operation specification to meet use requirements.
