RING SEAL FOR QUICK CONNECTION

Description

Description of the industrial invention in the name of ZIZ GmbH with registered office in Unterdorfer Weg 11 39010 Verano (BZ) ***** The present invention concerns the technical sector of craft tools. In particular, it concerns the invention of a pair of shears for cutting branches and twigs. The aforementioned generally comes with two blades with which they are cut the branches. If one of the branches is too large, it is the intervention of a manual saw is available which has the purpose of separating the branches from the tree. The hand saw intervenes when the shears are not in able to divide branches that are too resistant, for example because the blades of the shears are too small or because the force required is too much. The farmer currently has to use depending on the resistance and the thickness of the branches to be cut, two different tools, alternating them between them. tool that is not currently used must, for example, be stored in a pocket and taken out when needed. The continuous exchange of tools require skill to avoid accidents as well as wasted time precious. Therefore, the purpose of the present invention is to propose a shear perfected for cutting branches and twigs. According to the illustrated example of the present invention, it is a shear for cutting and / or sawing branches and twigs, which has a first and a counterpart used for cutting branches or twigs and a third blade which It has a handle connected to a movable handle and which when opened, from the rest position it moves to the cutting position and where the blade itself in the rest position it is protected by the handle. The counter-part is a second blade or a contrast surface. In other words, it presents a shear that has not only two blades that cut simultaneously and with which the branches can be cut, but also of an additional blade that can be extracted when necessary for cut off stronger branches. In jammed closing conditions, the third blade is protected from the handle, for example it is located inside the handle or on the side of the same. In any case the cutting part of the third blade, in this position, is protected by the handle, so that injury to the user is prevented avoided by the operation of the shears themselves. If the branch to be cut is too thick, the third blade can be removed, example to make it possible to cut the branches. The extraction takes place in forward or backward depending on the use of the shears. If the third blade is pulled forward, it can be used in conditions of extraction and then in cutting position, without having to be touched by the user. Extraction can occur automatically by pressing a key with the help of a special mechanism. Extraction can also take place from behind, so that with both blades of the front part, you can cut and with the third blade of the front part rear of the shears, it can be sawn. As per the next example of the present invention, the third blade when opened it can be brought into different cutting positions. Depending on depending on the need, you can choose the appropriate cutting position. As per the next example of the present invention the third blade is connected with two movable handles. As per the next example of the present invention the third blade It has a cutting area with serrated teeth for sawing twigs. In In this way, even large branches that would otherwise not be possible can be cut off cuttable with a simple blade or scissors. It is therefore no longer necessary, a tool exchange. The user can choose the shear function or the saw one; for this reason a locking device is provided which allows the use of both or the third blade. As per the next example of the present invention, the shears have a locking mechanism or device which is made in such a way to fix the third blade in cutting position. In this way it can be prevented that the third blade can become detached from the cutting position while the branch is being cut. This reduces the risk of injury can be further reduced as a unwanted closure of the third blade. As per the following example of the present invention, the locking mechanism for the automatic fixing of the third blade in the cutting position where the same, for the locking of the third blade in the rest position, it can be operated manually. When the blade is pulled out, the locking mechanism snaps into place. automatically as soon as it has completely come out. From this fixed position, the third blade can only be released again when the locking mechanism is specifically activated, for example when a special lever is pulled back or a release button, is pressed. As per the next example of the present invention, the shear has also of a second locking device that fixes the third blade in the resting position. As per the following example of the present invention, the second locking mechanism that automatically fixes the third blade in the rest position, where the same occurs when the third blade is extracted in the cutting position can be operated manually. As per the following example of the present invention it is illustrated how the third blade can be bent along its longitudinal axis to make possible less effort when using the saw. By making the blade or saw bend, it is easier the cutting of round and sturdy branches. It should be noted that the saw profile of the third blade may appear in different shapes, for example saracco or catfish, which are composed with interchangeable concave and convex edges. As per the next example of the present invention the handle It has a first and a second covering between which the third is found blade in rest position. The serrated blade is therefore protected in the rest position by both the parts through the first and second coating. As per the next example of the present invention the handle It has a manual extraction of the third blade which allows the latter to go from the rest position to the cutting position. For example, the third blade in the rest position is covered completely from the handle to the part that is in the area of extraction. Extraction occurs by holding the blade by of the user, followed by an extraction from the rest position. As per the next example of the present invention the third blade in the cutting position forms an angle between 90° and 1° with the handle 155°, which allows for comfortable cutting. By operating the handle of the removable blade, it can be exerted a greater compressive and tensile force on it, which allows for a powerful cutting action. In another example the angle between the blade and handle is between 125° and 145°. As per the following example of the present invention, the shears have furthermore, of a snap mechanism which induces automatic extraction of the blade, from the rest position to the cutting position. This is a mechanism that has a spring element that is tensioned with the blade closing. By activating the specific release mechanism, the blade aided by the tensioned spring, comes out automatically. As per the next example of the present invention, the shears have a shift mechanism for the automatic release of the third blade, from rest position to cutting position. The movement mechanism can be equipped with a special spring element, of a longitudinal direction guide of the third blade, in which slides along the longitudinal axis of the handle, allowing it to exit from the rest position to the cutting position. In extraction conditions, the locking mechanism comes into operation which prevents involuntary closing of the blade. By activating the mechanism closing, the blade can retract into the housing against the force of the spring. In this position a snap occurs again, which brings it into blocking condition. A blocking mechanism is provided for this. As per the next example of the present invention the device of The locking device has a spring element, which comes into operation when automatic control of the device itself. In this way you can have the automatic blade locking, both in the rest position and in the cutting position. Later, as per the following example, blades will be available in steel or ceramic. The handles will be made partially of malleable material, for example to reduce the risk of injury. Further illustrated examples and advantages of the invention are available in the listed below Figures and in the following descriptions. The present invention is described below with illustrated examples and with reference to drawings. Fig. 1 shows a first schematic representation of the shears as per illustrated example of the present invention. Fig. 2 shows a second schematic representation of the shear. Fig. 1, seen from another angle. Fig. 3 shows a schematic representation of a serrated blade as from illustrated example of the present invention. Fig. 4 shows a schematic representation of a serrated blade as from further illustrated example of the present invention. Fig. 5 shows a schematic representation of a serrated blade as from further illustrated example of the present invention. Fig. 6 shows a schematic representation of a part of the handle with attached serrated blade, in extracted condition as per further illustrated example of the present invention. Fig. 7 shows a schematic representation of the locking mechanism as per illustrated example of the present invention. Fig. 8 shows a schematic representation of the shear as per further illustrated example of the present invention. Fig. 9 shows a partial schematic representation of the shear, with a displacement mechanism, as per further illustrated example of the present invention. The representation of the images is schematic and not to scale. In the following description they are used for the same or similar elements, the same reference figures. Fig. 1 shows a schematic representation of the shear 100 as per illustrated example of the present invention, viewed from above. The shear 100 essentially comprises a first handle 104 and a second handle 106, which are firmly joined from time to time, respectively, with blade 102 and blade 101. Both handles 104, 106 are joined together and can be rotated through a mechanism 108 rotation, which allows for the clean cutting of branches or similar. A spring element 109 is provided below, which allows an automatic opening of the shears. Bringing both handles together 104 and 106, the spring element 109 compresses. The 104 grip has a large recess inside it in the which can be retracted the cutting blade 103. Therefore the cutting blade 103 is connected to the handle 104, through a rotating mechanism 107, which allows the blade 103 to be retracted or extracted along the gap indicated by arrow 112. The 103 blade has a toothed saw for cutting branches. In addition, the blade 103, has an incision 111 which is used to extract and store the blade from and into the handle. A small recess is provided for this purpose 110 in the handle 104. Fig. 2 shows the shears in Fig. 1, rotated 90°. A part of the locking mechanism 701, with which the blade 103 can be held retracted in the rest position and also extracted in the storage position cut. The 701 locking mechanism surrounds a spring element in the shape of flat, which automatically holds the blade 103 in the position of closure and which can only be released by using a specific force. The same goes for the cutting position. In Fig. 2 it is equally recognizable as the blade 103 in the position of rest is placed laterally near the handle 104, but which is from this blanket (as can be seen in Fig. 1). On the other side the blade 103 is covered by the second handle 106. Fig. 3 shows a schematic representation of a serrated blade 103 as per illustrated example of the present invention. The serrated blade 103 is bent along the longitudinal direction, which allows for less energy expenditure in cutting branches. When extracting the serrated blade 103 has a 301 area, with a 111 incision, into which the user can insert his own nail. As an alternative to the 111 engraving, a tab can also be provided, which protrudes from the blade. Fig. 4 shows another illustrated example of a serrated blade 103, this time however not with serrated teeth 302 (see Fig. 3), but with teeth 402, whose cutting curve is concave. Furthermore, the rotation mechanism 107 has a protrusion 401, at the which a lock is attached, depending on whether blade 103 is retracted or extracted. An example of such a closure is available in Fig. 7. Fig. 5 shows a serrated blade 103 as per the following example illustrated of the present invention. The serrated blade 103 has a cutting element 501 which in turn has concave cutting curves and convex, interchangeable. In this way it is possible for the user to greater use of force in the cutting movement. In the maneuver on the contrary, the pressure force exerted by the user on the saw is to reduce. Fig. 6 shows a part of the shear, as per the following example illustrated of the present invention. The serrated blade 103, in the of extraction, forms an obtuse angle with the handle, which reaches the 120°. The image depicted in Fig. 6 is a partial extract. The part which from the dividing line 601 reaches the shear area, is not depicted. Through the locking mechanism, the serrated blade 103, represented in Fig. 6 is blocked or fixed. A further extraction of the blade 103 with an angle of 180°, between the handle and the blade itself, is not possible. In this case way allows for comfortable cutting. However, illustrated shapes are provided, in which other angles are formed between the blade 103 and handle 104; for example 180° or 90°, depending of employment. Fig. 7 shows a partial extract of the shear in the area of ​​the locking mechanism. closure 701, 702, 703, 401. The serrated blade 103 is represented only up to the dividing line 704. The locking mechanism has of a lever 701 that can move on the axis 702 along the arrow 705. The lever 701 is held by a spring 703. Lever 701, in the position represented in Fig. 7, holds the blade 103, then moves in direction of arrow 706. Further illustrations of the locking mechanism. For example, the locking mechanism can be performed in reverse, so that the blade 103, in the condition depicted, can no longer be retracted (so it cannot be placed in the direction contrary to arrow 706). Fig. 8 shows a schematic representation of a shear as per following illustrated example of the present invention. The shear has a lock 801, which ensures that the blade 103 cannot be excessively extracted and that the same, upon reaching the position of cut, is blocked. Depending on the desired extraction angle, they are the settlement surfaces 401 or 802 are provided for this purpose, which rotate together with element 103 and upon reaching the position of cut, come into contact with element 801. By means of a special spring element (not shown in Fig. 8), the blade 103 in non-extracted condition is retained in the handle 104. A locking device 803 is illustrated, which allows the use of the two blades or of the third blade. Fig. 9 shows a schematic representation of a mechanism of automatic exit movement of the cutting blade 103, from the position of rest at the cutting position along the arrow 902. For this the handle 104 has a guide 901, in which two pins slide 903, 904 which are fixed to the blade 103. The blade 103 can, therefore, be extracted or stored, exiting from the housing formed by the handle 104 along the guide 901. For the extraction of the blade 103 from the housing formed by the handle, a spring element 906 is provided, which is will compress when the blade is introduced into the housing 104. disengagement of a special locking mechanism (not shown in the Fig. 9), the blade 103 will pop out of the housing. Instead of or together with the spring 906, a spring 906 may be provided on the blade 103. pin 907, which in the closed condition remains in the recess 107 and which It will be useful in case of manual extraction of the blade from the housing. In extraction condition a mechanism is automatically activated closure, to fix the blade in this position, thus ensuring a clean cut safely. Finally, it should be noted that in general, the following are not excluded: further features or sequences. It should also be noted that features and sequences, in reference to one of the above described illustrated examples, can be referred to with other features or sequences of the other examples illustrated above. Reference notes in the rights described are not to be to be considered as limitations.

Claims

1. Shears for cutting (cutting and sawing action) branches or twigs, the shears (100) comprising: a first blade (101) and a counter-part (102) for the clean cutting of branches or twigs; a third blade (103) for cutting twigs or branches; at least one handle (104, 106); wherein the third blade (103) which is movably joined to the handle (104) and when opened it can be moved from the rest position to the cutting position; and where the third blade (103) in the rest position is protected from the handle (104).

2. Shear according to claim 1, where the third blade (103) is moveable to the opening from the rest position in various cutting positions.

3. Shear according to claim 1 or 2, in which the third blade is movably joined to the two handles (104, 106).

4. Shear according to any of the preceding claims, in which the third blade (103) has serrated teeth in the cutting area for the cutting of twigs.

5. Shear according to any of the preceding claims, including: a first locking mechanism (401, 701, 702, 703) for locking of the third blade (103) in the cutting position.

6. Shear according to claim 5, wherein the first locking mechanism (401, 701, 702, 703) is operated by automatic locking of the third blade (103) in the cutting position; and in which the first locking mechanism (401, 702) for the withdrawal of the third blade (103) in the rest position can be released manually.

7. Shear according to any of the preceding claims, including: a second locking mechanism for locking the third blade (103) in the resting position.

8. Shear according to claim 7, in which the second locking mechanism is activated for locking automatic third blade (103) in rest position; and in which the second locking mechanism for the extraction of the third blade (103) in the cutting position it can be released manually.

9. Shear according to any of the preceding claims, in which the third blade (103) has, along its longitudinal axis, a curved shape, which allows for a force-saving cut.

10. Shear according to any of the preceding claims, wherein the handle (104) has a first and a second covering, in which the third blade (103) is in the rest position.

11. Shear according to any of the preceding claims, where the third blade (103) in the cutting position forms with the handle (104), an angle, between 90° and 155°, to allow a cut comfortable.

12. Shear according to any of the preceding claims, including: a trigger mechanism for the automatic extraction of the third blade (103) from the rest position to the cutting position.

13. Shear according to any of the preceding claims, including: a displacement mechanism for the third blade to come out (103) from the rest position to the cutting position.

14. Shear according to any of the preceding claims, where the handle (104) has a recess, to allow a manual extraction of the third blade (103) from the rest position the cutting one.

15. Shear according to any of the preceding claims, including: a spring element (703) for automatic actuation of the first locking mechanism (401, 701, 702, 703). The Mandatory Eng. Gianfranco Dragotti Della Dragotti & Associates Srl (Registration, Register No. 300) ABG / GD / ac