SEGA AD ARCO

Description

Description of the invention entitled: "Bow saw" in the name of WANG Kuang-Pin ★ * ★ MI 96 U 04 8 7 This invention relates to a bow saw which can be carried comfortably and which can be easily and quickly folded or opened. Two saws in particular are described in the attached Figures 1-4 as examples of conventional bow saws. Figures 1 and 2 show a bow saw that includes the saw blade holder 11, a handle 12, and the saw blade 13. The saw blade holder 11 can be stored in the handle 12 when not in use. However, before folding the bow saw, the nut 14 must be removed. Therefore, it is not easy to fold or unfold the bow saw. Furthermore, the saw blade 13 is secured by tightening the nut 14. These operations are time-consuming. Figures 3 and 4 illustrate another bow saw that includes the saw blade seat 21, the handle 22, the movable element 23 and the saw blade 24. This bow saw can be easily folded or opened by means of the handle 22, which is connected, by means of a pin, to the blade seat 21. of the saw. The handle 22 has the groove 221 to accommodate the seat 21 of the saw blade, said groove 221 being delimited by two thin side walls. These thin walls can cause some disadvantages, such as the difficulty in holding the bow saw since its grip is not comfortable for the user. The primary purpose of this invention is therefore to provide a bow saw that includes a seat for the saw blade and a handle connected to it by a pin. A portion of the saw blade seat can be housed in the handle when the saw is folded. Conversely, the handle can be pulled out and rotated 90° so that the bow saw is open, in the working position. Opening and folding can be performed quickly and safely, and the bow saw can be carried comfortably. A further object of the present invention is to provide the aforementioned bow saw in which the saw blade seat serves to house at least one saw blade. Therefore, the user can conveniently choose the saw blade deemed suitable for the purpose. The present finding can be better understood by the description that follows and the attached drawings in which: Figure 1 is a perspective view of a conventional bow saw in the open position; Figure 2 is a perspective view of the bow saw of Figure 1 in the folded position; Figure 3 is an exploded perspective view of another conventional bow saw; Figure 4 is a side view of the bow saw of Figure 3 in the open position; Figure 5 is an exploded perspective view of a first embodiment of the present invention; Figure 6 is an assembled side view of the first embodiment of the present invention in the open position; Figure 7 is a sectional view illustrating the second end of the handle of the embodiment of Figure 6; Figure 8 is an assembled side view of the first embodiment of the present invention in the folded position; Figure 9 is a sectional view showing the first end of the handle of the embodiment of Figure 8; Figure 10 is an exploded perspective view of a second embodiment of the present invention; Figure 11 is an assembled side view of the second embodiment of the present invention in position opening; Figure 12 is a exploded perspective view of a third realization of the present invention and Figure 13 is a exploded perspective view of a fourth embodiment of the present invention. Detailed description of favorite creations With reference to Figure 5, in which represented the first realization in agreement to the present found of the blade of the the bow saw includes the seat saw, the handle 4 and at least one saw blade 5.. Headquarters 3 of the saw blade is made of a longitudinal channel having an opening 31 on the base side of the saw blade seat. An eccentrically rotating cap 33 is rotatably connected to the first end 32 of the saw blade seat 3 by a pivotal spindle 331. In this preferred embodiment, as illustrated in Figure 5, there are three saw blades 5. Each saw blade 5 is rotatably connected to the rotating cap 33 by a pin 332. The pivotal spindle 332 is located at a certain distance from the pivotal spindle 331. The first end 32 of the saw blade seat 3 is provided with an arched recess 321 for the insertion of the rotating pin 332. The free end of the saw blade 5 can be rotated and pulled out of the opening 31. The saw blade seat 3 has a second end 34 distant from the rotating cap 33. The second end 34 is shaped with a first locating hole 35. A second locating hole 36 is located on the saw blade seat 3 and is spaced from the first locating hole 35 by a length approximately equal to the length of the handle 4. A longitudinal sliding channel 37 is located between the first locating hole 35 and the second locating hole 36 to reinforce the structure of the saw blade seat 3. The handle 4 is essentially made of an oblong hollow tube with a raised external surface for easy grip by the user. The first end 41 of the handle 4 is open, so that the second end 34 of the saw blade seat 3 can be axially inserted into it for a predetermined length. A positioning element 42 is placed near the first end 41. of the handle 4. In this embodiment the element positioning button 42 is a push button having a first end consisting of a positioning stop device 421 and a second end consisting of a spring element 422. The middle part of the push button is provided with a positioning hole 423 for pivotal connection to the handle 4 by means of the pin element 424. The second end of the push button 42 can be pressed until it reaches the pin element 424 to cause the stop element 421 of the first end to engage or disengage from the first positioning hole 35 or the second positioning hole 36 of the saw blade seat 3. As shown in Figure 7, the second end 43 of the handle 4 is provided with a positioning pin 44 having a groove 441 for engagement with the through hole 51 of the saw blade 5 brought out by rotation from the saw blade seat 3. Referring to Figures 6 and 7, the positioning member 42 is pressed to cause the stop member 421 to disengage from the second positioning hole 36. The handle 4 can thereby be moved along the slide channel 37 towards the second end 34 of the saw blade section 3. ' f * When the stop element 421 is inserted into the first locating hole 35, at least one of the saw blades 5 can be pulled or rotated out of the saw blade seat 3 by the user. As for the remaining saw blades 5, they can be reinserted into the saw blade seat 3. Then the handle 4 is rotated downwards together with the saw blade seat 3. This creates an angle of approximately 90° between the handle 4 and the saw blade seat 3, and in this position the remaining saw blades 5 are locked by the handle 4. Then the rotating cap 33 is rotated to reduce the space between the through hole 51 of the saw blade 5, rotated outward, and the locating pin 44 of the second end 43 of the handle 4 so as to position the saw blade 5 around the groove 441 of the locating pin 44.The rotating cap 33 is then rotated in the opposite direction, causing the eccentric pin 332 to be moved away from the positioning pin 44, thus tensioning the saw blade 5. Therefore, the two ends of the saw ISJQa 5 are respectively connected to the first end 32 of the saw blade seat 3 and to the second end 43 of the handle 4, thus forming a bow saw. in the working position (open position). Referring to Figures 8 and 9, when the bow saw is folded, the rotating cap 33 is rotated to reduce the distance between the through hole 51 of the saw blade 5 and the locating pin 44 of the second end 43 of the handle 4, so that the through hole 51 is disengaged from the locating pin 44 and the handle 4 can be rotated to be placed on the same axis as the seat 3 of the saw blade. Then the saw blade 5 is rotated within the saw blade seat 3 and the locating member 42 is pressed to disengage the locking member 421 from the first locating hole 35. Then the saw blade seat 3 is pushed towards the handle 4 to engage the locking member 421 in the second locating hole 36. In this position a portion of the saw blade seat 3, from the second end 34 to the second locating hole 36, is inside the handle 4. With reference to Figures 10 and 11, in the second embodiment of the previous invention, the handle 6 is made up of two opposing parts. Each part has a face 61, matching the opposite part, which is equipped with a guide channel 62. At the first end 63 of the handle 6, the guide channel 62 is curved; said guide channel 62 extends straight from the curved end to the second end 64 -of the handle 6. The second end 71 of the saw blade seat 7 is provided with the guide element / positioning 72 for insertion of the handle 6 into the guide channel 62 and for guiding the handle 6 to slide and rotate within it. The guide channel also serves to reinforce the handle 6 at the point of rotation. With reference to Figure 12, in a third embodiment of the present invention, the handle 8 is provided with a rectangular guide channel 81 having a width equal to that of the saw blade seat 82. A positioning element formed by the steel ball 83 and the spring 84 is inserted into a first positioning hole 85 and a second positioning hole 86 of the saw blade seat 82 to position the handle 8 and the saw blade seat 82 and to also serve as a rotation fulcrum of the handle 8. In this embodiment, the saw blade seat 82 is not provided with the sliding channel 37 present in the first embodiment. Instead, the rectangular guide channel 81 allows the r longitudinal movement of the blade seat 82 saw and handle 8. Referring to Figure 13, in a fourth embodiment of the present invention, the handle 9 and the saw blade seat 91 are substantially and structurally identical to those of the second embodiment. However, the handle 9 is further equipped with a second positioning element consisting of a wing bolt 92, and furthermore, the saw blade seat 91 is not equipped with any guide channel or positioning hole. The function of the wing bolt 92 is to tighten and position the handle 9 in the saw blade seat 91. The positioning element 93 of the saw blade seat 91 can be slid within the guide channel 94 of the handle 9, allowing the handle 9 to rotate relative to the saw blade seat 91. The bow saw of this invention has the following advantages: 1. The bow saw can be held comfortably. The handle has an opening at its first end to accommodate the saw blade seat instead of having it on its outer side. Therefore, the handle can be held more comfortably. comfortable. 2. The bow saw can be folded and unfolded more easily. The handle is equipped with a positioning element that also serves as a rotation shaft, so that the handle can be folded until it assumes a position essentially perpendicular to the saw blade seat in the open position. The handle can be slid lengthwise along the slide channel to assume a folded position. 3. The saw blade seat can accommodate multiple saw blades. It is to be understood that the above description and drawings are used only to illustrate certain embodiments of the present invention and are not to be construed as limiting its scope. Any variation or derivation from the above description and drawings are to be understood as included within the scope of the present found.

Claims

Claims 1. Bow saw comprising: a saw blade housing having first and second ends, an eccentrically rotating cap which is pivotally connected to the first end of the saw blade housing, and at least one saw blade which is pivotally connected to the rotating cap, the saw blade housing being comprised of a longitudinal channel for accommodating the saw blade or blades, and having an opening on one side for pivoting the saw blade or blades out of the saw blade housing; a handle consisting essentially of an oblong hollow tube having on the external surface reliefs for easy grip, the first end of the handle being open, so that the second end of the saw blade seat can be axially housed inside it and at least one positioning element located near the first end of the handle for positioning the second end of the saw blade seat, the handle being rotatable with the saw blade seat to form an angle of approximately 90°, thereby allowing the second end of the handle to engage with the saw blade in so as to form a bow saw in the position of work, the 'positioning element' being also used to position the saw blade seat when the handle axially accommodates a portion of the saw blade seat.

2. A bow saw according to claim 1, wherein the second end of the saw blade seat has a first locating hole and a second locating hole is located in the saw blade seat, spaced from the first locating hole by a distance approximately equal to the length of the handle, whereby the locating member can be inserted into the first locating hole and permit the bow saw to be folded and the locating member can otherwise be inserted into the second locating hole and permit the saw blade seat to be seated in the handle.

3. A bow saw according to claim 1, wherein the saw blade seat has a slide channel along which the handle is slid axially.

4. A bow saw according to claim 1, wherein the positioning element is a push button having a first end equipped with a device stop, a second end equipped with an element elastic and a middle part which has a positioning hole.

5. Bow saw according to claim 1, wherein the positioning element consists of a sphere made of steel and a spring.

6. Bow saw according to the handle is equipped with positioning consisting of tightening and positioning the seat 7. Bow saw according to the 1st handle is formed by each having a face, opposite, handle channel, from the end claim 1, wherein a second element of a wing bolt for the saw blade. claim 1, wherein two opposing parts, mating with the part provided with a guide channel, being said Of guide arched at the first end said guide channel extending curved at the second end of the handle, the second end of the saw blade seat being provided with a locating element for inserting the handle into the guide channel and for guiding the handle in sliding and rotating therein.

8. Bow saw according to claim 1, wherein the second end of the handle is provided with a positioning pin for 1'engagement and the outside the saw blade seat. The Mandatory (Dr. Gianna Benedirne registered number Milan, July 8, 1996