A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to any reproduction by anyone of the patent disclosure, as it appears in the United States Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever.
Field of Invention
The present invention relates to a control device of a cutting tool, especially to a control device of a cutting tool that controls the cutting tool to perform multi-stage cutting and locks a blade of the cutting tool at a closed position while the cutting tool is not in use.
Description of Related Arts
Generally, the stem of plants is hard and thick so that the stem requires training. The cutting tool/gardening shears for training should have sharp blades. For labor saving during operation of the cutting tool, a multi-stage cutting tool is available. Moreover, a cutting tool able to control cutting modes such as the one revealed in Taiwanese Patent No. M420981 is also available. Pruning shears revealed can be switched to a cutting mode focused on training of branches. The pruning shears includes a first handle and a second handle pivotally connected which users can hold and apply their forces to. A blade unit is pivotally connected to a front end of the first handle and is corresponding to a blunt part on arranged at the front end of the first handle. A drive rod is pivotally connected to the second handle. One end of the drive rod is movably connected to a rear end of the blade unit for pushing the blade to perform cutting. A switch element with a movable and linear structure is set on the second handle. The switch element is able to move linearly to become leaning against the blade unit or move in the opposite direction to get away from the blade unit. A safety fastener is disposed on the second handle for locking an operating piece of the blade unit when the pruning shears is in a closed position.
The switch element is used to control the cutting mode while the safety fastener is used to lock the operating piece of the blade unit. They are arranged at the second handle and separated from each other. The switch element is moved horizontally for pushing the blade unit while the safety fastener is worked in a pendulum manner.
Thus users need to operate two parts at the same time for controlling the cutting mode or changing the pruning shears to the closed position. The design causes inconvenience to users. Moreover, both assembly cost and component cost are increased.
Therefore it is a primary object of the present invention to provide a control device of a cutting tool that switches the cutting tool to different cutting mode with lower cost. Moreover, the control device also provides a locking function.
In order to achieve the above objects, a control device of a cutting tool according to the present invention includes a first component and a second component. One end of the first component is extended to form an anvil part. One end of the first component is pivotally connected to a blade. One end of the blade is extended to form a blade handle. The blade handle includes a hollowed-out window and one end thereof is extended to form a pin. The blade and the anvil part are moved for cutting through the first component and the second component due to the pivotally connected first and second components and second components and other overlapped related parts.
The second component includes a first assembly part and a receiving space. The receiving space is formed by a first wall and a second wall, each of which is disposed with a first bulge and a second bulge used for positioning. The present invention features on that the receiving space is mounted with a control device and the control device is pivotally connected to the first wall and the second wall. The control device consists of a pivot part, a first holding part and a second holding part formed by extension of the pivot part, a platform part arranged between the first holding part and the second holding part, and a groove set on the platform part.
A support body is made from metal and having a connection part, a back part formed by extension of the connection part and a hook part formed by extension of one end of the back part. The shape of the connection part is matched with the shape of the groove for being mounted in the groove. The horizontal surface of the back part and the horizontal surface of the platform part are on the same plane while the hook part is projecting from the platform part. The pivot part is mounted into the receiving space. A pivot hole of the pivot part is aligned with pivot holes of the first and the second walls. Thereby the control device is pivotally connected to the second component. The first holding part and the second holding part are pushed and operated on the first wall and the second wall like a pendulum.
The pin of the blade is leaning against the back part of the support body while the first holding part and the second holding part being pushed to the first bulge. Thus the cutting tool is in a one-time cutting mode. When the first holding part and the second holding part is pushed to the second bulge, the pin of the blade is not leaning against the back part of the support body, so the cutting tool is in a multi-stage cutting mode.
Next, the first component and the second component are moved toward each other to make the blade and the anvil part become closed. Then the first holding part/the second holding part is pushed and moved to the position between the first bulge and the second bulge. Then the hook part is locked with the pin of the blade and the control device is used to lock the blade and the anvil part at the closed position.
The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein:
In order to learn functions and features of the present invention, please refer to the following embodiments with detailed description and the figures.
Refer to
Refer to
Refer to
Refer to
A connection rod 4 consists of a protruding part 41, a first hole 42 at one end, and a second hole 43 at the other end 43. A spring 8 is fitted on the protruding part 41. The first hole 42 is aligned with the fourth pivot holes 232a, 232b and pivotally connected to the second component 2 by a shaft 72. The second hole 43 is aligned with and pivotally connected to the window 322 of the blade 3 by the shaft 73. Thereby the end part of the connection rod 4 with the second hole 43 can be moved a certain distance within the window 322.
Refer to
Refer to
In summary, the present invention has the following advantages.
1. The support body 6 for the control device 5 is made from metal that is hard and wear resistant. Thus the support body 6 will not be worn out when the pin 323 of the blade 3 is leaning against the back part 62 of the support body 6 and still worked normally even after being operated multiple times.
2. The support body 6 for the control device 5 includes the hook part 63 so that the control device 5 can provide a locking function.
Additional advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details, and representative devices shown and described herein. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.
Number | Name | Date | Kind |
---|---|---|---|
309889 | Shepard | Dec 1884 | A |
2189211 | Lind | Feb 1940 | A |
4258472 | Wallace | Mar 1981 | A |
5774991 | Shi | Jul 1998 | A |
5987755 | Shih | Nov 1999 | A |
D434285 | Podlesny | Nov 2000 | S |
6772520 | Shih | Aug 2004 | B1 |
D607702 | Wu | Jan 2010 | S |
7895757 | Huang | Mar 2011 | B1 |
D638673 | Huang | May 2011 | S |
8832945 | Yang | Sep 2014 | B2 |
D775504 | Dechant | Jan 2017 | S |
20020000044 | Huang | Jan 2002 | A1 |
20080184567 | Jou | Aug 2008 | A1 |
20080295341 | Lipscomb | Dec 2008 | A1 |
20090223059 | Yu Chen | Sep 2009 | A1 |
20110154669 | Liu | Jun 2011 | A1 |
20120023756 | Schneider | Feb 2012 | A1 |
20130008563 | Reh | Jan 2013 | A1 |
20130031786 | Wang | Feb 2013 | A1 |
20140290067 | Ronan | Oct 2014 | A1 |
20150040407 | Lin | Feb 2015 | A1 |
20150208589 | Chou | Jul 2015 | A1 |
20170215346 | Lin | Aug 2017 | A1 |
Number | Date | Country |
---|---|---|
202009001893 | Apr 2009 | DE |
20201008950 | Feb 2011 | DE |
202011051328 | Nov 2011 | DE |
202012103375 | Sep 2012 | DE |
3199308 | Aug 2017 | EP |
272373 | Aug 2005 | TW |
312405 | Nov 2006 | TW |
Number | Date | Country | |
---|---|---|---|
20170215346 A1 | Aug 2017 | US |