TWI778577B - Sheet metal scissors - Google Patents

Abstract

The present invention discloses a sheet metal scissors, comprising: a first knife body and a second knife body, wherein the first knife body includes a lower blade part, an upper handle and a back pivot part; the second knife body that includes an upper blade part, a lower handle and a front pivot part. The lower handle has a ring part that can protect the hand during the process of cutting the iron sheet, and is able to hold and cut iron sheets steadily.

Description

Sheet metal scissors

The present invention is related to scissors, especially a kind of scissors for sheet metal.

Sheet metal refers to the processing of various thin metals, including: shearing, bending, forming, welding, etc. The scissors structure used for sheet metal cutting is to form a crossed line contact between the pivoted element bolt and the nut locking blade for cutting, such as Taiwan Bulletin 355661, 335746, M469996, M252526 and China Bulletin CN201815743U and other patents, Through different scissor structures to increase stability, increase protection and reduce friction, although there are many sheet metal scissors, it is expected by the industry to provide users with a new choice among many sheet metal scissors designs.

In order to provide a new choice of sheet metal scissors in the industry, the present invention provides a sheet metal scissors, including: a first blade body and a second blade body, more specifically, the first blade body includes a lower blade portion for an upper handle abutting the tiger's mouth of the hand and a rear pivoting portion located between the lower blade portion and the upper handle; the second blade body includes an upper blade portion located above the lower blade portion, A lower handle below the upper handle, and a front pivot portion located between the upper blade portion and the lower handle, the front pivot portion intersects and overlaps the rear pivot portion, and the front pivot portion It is pivotally connected to the rear pivoting portion so as to be relatively rotatable. The other side of the front pivoting portion is connected with a hook-shaped rod, and the hook-shaped rod is connected with the lower handle, wherein the hook-shaped rod makes the position of the lower handle not lower than the lower blade portion. The lower handle is formed in a ring shape, and is provided with a support rod to separate an upper ring and a lower ring, wherein the upper ring is The area is larger than that of the lower ring, the upper ring can accommodate at least three fingers of the user, and the lower ring can accommodate one finger of the user.

In one embodiment, the first blade body and the second blade body of the above-mentioned sheet metal scissors of the present invention are integrally formed.

In one embodiment, the upper ring of the sheet metal scissors of the present invention can accommodate at least three fingers of the user, and the lower ring can accommodate one finger of the user, wherein the area of the upper ring is larger than that of the lower ring.

In one embodiment, a rib surrounds the lower handle.

In one embodiment, the front pivoting portion of the sheet metal scissors of the present invention has a front pivoting hole and the rear pivoting portion has a rear pivoting hole, and a bolt passes through the front pivoting hole and the rear pivoting hole. Pivot the hole and use a nut to lock into the bolt.

In one embodiment, a spring is disposed between the upper handle and the lower handle of the sheet metal scissors of the present invention.

In one embodiment, the spring of the above-mentioned sheet metal scissors of the present invention is a torsion spring or a pressure spring.

In one embodiment, the edge of the upper blade portion of the sheet metal scissors of the present invention forms an arc shape that is curved upward, and the blade edge of the lower blade portion forms a straight shape.

In one embodiment, the lower blade portion of the sheet metal scissors of the present invention has a rear side surface of the upper blade portion, and the rear side surface has a plurality of concave portions.

Compared with the prior art, by forming a ring-shaped lower handle, the sheet metal scissors of the present invention can not only obtain good protection for the hands during the process of cutting the iron sheet, but also can be well protected under the grip of the upper ring and the lower ring. Hold firmly to maintain stable cutting action.

1: The first knife body

11: Lower blade

112: Edge

11B: rear side

C: Depressed part

12: One on the handle

13: Rear pivot joint

131: Rear pivot hole

132: Front Extension

2: The second cutter body

21: Upper blade

212: Edge

213: Arc segment

22: Lower Grip

221: hook rod

221A: Ribs

222A: Sheung Wan

222B: Lower Ring

223: Support rod

23: Front pivot part

231: Front pivot hole

232: Rear extension

31: Bolts

32: Nut

4: Spring

5: iron sheet

A: Axial

A1: Rear

A2: Front

FIG. 1 shows a schematic perspective view of the present invention; FIG. 2 shows a perspective exploded schematic view of the present invention; Fig. 3 shows a side view of the present invention; Fig. 4 shows a schematic diagram of the use state of the present invention.

1 to 3 show a preferred embodiment of the sheet metal scissors of the present invention, which includes a first blade body 1 and a second blade body 2, both of which are integrally formed structures. The first blade body 1 has a rear pivoting portion 13 , and the rear pivoting portion 13 has a rear pivoting hole 131 ; the second blade body 2 has a front pivoting portion 23 , and the front pivoting portion 23 has a The front pivot hole 231 . The front pivoting portion 23 is stacked in front of the rear pivoting portion 13 , and a bolt 31 passes through the front pivoting hole 231 and the rear pivoting hole 131 along an axis A, and then pivotally connects the first knife The body 1 and the second cutter body 2 are locked into the bolt 31 by a nut 32 to achieve relative rotation. However, there are many choices of locking mechanisms, and it is not limited to this. The front and rear are based on the directionality of the axis A as a reference.

The lower side of the rear pivot portion 13 is connected to the lower blade portion 11 by a front extension portion 132, wherein the edge 112 of the lower blade portion 11 forms a straight shape, and the rear pivot portion 13 can be connected by the front extension portion. 132 is offset from the lower blade portion 11 by a certain distance toward the rear A1 of the axial direction A. On the other hand, the first blade body 1 is connected with an upper handle 12 on the upper side of the rear pivot portion 13 for abutting against the tiger's mouth of the hand.

One side of the front pivot portion 23 is connected to an upper blade portion 21 by a rear extension 232, wherein the edge 212 of the upper blade portion 21 forms an upward curved arc, and the front pivot portion 23 uses The upper blade portion 21 is shifted by a certain distance from the rear extension portion 232 toward the front A2 of the axial direction A. As shown in FIG. On the other hand, the second cutter body 2 is connected with a hook-shaped rod 221 on the other side of the front pivot portion 23 , and the hook-shaped rod 221 is connected with a lower handle 22 , wherein the hook-shaped rod 221 makes the lower The position of the handle 22 is not lower than the lower blade portion 11 .

The lower handle 22 is formed in a ring shape, and a support rod 223 is arranged in the ring to separate an upper ring 222A and a lower ring 222B, wherein the area of the upper ring 222A is larger than that of the lower ring 222B, and the upper ring 222A can be At least three fingers (index finger, middle finger, ring finger) of the user are accommodated, and the lower ring 222B can accommodate one of the user's fingers. Finger (little finger).

As shown in FIGS. 1 and 2 , the first blade body 1 and the second blade body 2 are arranged with the front pivot portion 23 stacked in front of the rear pivot portion 13 , but the lower blade portion 11 However, through the cooperation of the front extension section 132 and the rear extension section 232, it can extend to the front of the upper blade portion 21, thereby reducing the gap between the blades and increasing the neatness of cutting.

With the above structure, when operating the sheet metal scissors of the present invention to cut the iron sheet 5, as shown in FIG. 4, the user inserts the three fingers (index finger, middle finger, ring finger) of the hand into the upper ring 222A of the lower handle 22, One finger (little finger) is inserted into the lower ring 222B, and the other hand's mouth is against the upper handle 12, and the upper handle 12 can be pivoted toward the lower handle 22 by applying force to push the upper handle 12 to form a cut action. At this time, the user's fingers can be surrounded by the upper ring 222A and the lower ring 222B, thereby being protected from being cut by the sharp edges of the iron sheet 5 . In addition, when the user operates the sheet metal scissors, the forefinger, middle finger and ring finger hold the upper ring 222A and the little finger hold the lower ring 222B by the tiger's mouth against the upper handle 12, so as to stabilize the hand during the process of cutting the iron sheet Holding position to maintain a stable crop.

On the other hand, as shown in FIG. 4 , the cut iron sheet 5 will be pushed downward by the curved edge 212 of the upper blade portion 21 , and further away from the user's hand to ensure that the cutting action will not be hindered.

As shown in FIG. 3 , a rib 221A extends around the entire lower handle 22 , and the lower handle 22 increases structural strength through the design of the rib 221A.

In addition, a spring 4 is also provided between the upper handle 12 and the lower handle 22. The spring 4 can be a torsion spring (not shown in the figure) or a pressure spring, which is used to assist the sheet metal scissors to quickly Bounces back to speed up the next trim action.

As shown in FIG. 2, when the sheet metal scissors are cut, the cut iron sheet 5 will rub against a rear side 11B of the lower blade portion 11. In order to reduce the friction between the iron sheet 5 and the rear side 11B, the rear side 11B has The plurality of concave portions C reduce the friction area of the rear side 11B and increase the smoothness of the cutting process.

Based on the above, it can be seen that the sheet metal scissors of the present invention, when the user is cutting, by forming the ring-shaped lower handle 22, not only can the hands be well protected during the process of cutting the iron sheet, but also the hands can be well protected on the upper ring 222A. And under the holding of the lower ring 222B, the cutting iron sheet can be held stably while the cutting iron sheet is traveling, so as to maintain stable cutting.

1: The first knife body

11: Lower blade

112: Edge

12: One on the handle

2: The second cutter body

21: Upper blade

212: Edge

221: hook rod

222A: Sheung Wan

222B: Lower Ring

223: Support rod

31: Bolts

4: Spring

Claims (6)

A kind of sheet metal scissors, comprising: a first blade body, including a lower blade portion, an upper handle for abutting the tiger's mouth of a hand, and a rear pivot portion located between the lower blade portion and the upper handle, the rear The pivot part is provided with a rear pivot hole; a second blade body includes an upper blade part located above the lower blade part, a lower handle located below the upper handle, and the upper blade part and the lower handle A front pivoting part between the handles, the front pivoting part is provided with a front pivoting hole; a bolt, the bolt passes through the rear pivoting hole and the front pivoting hole along an axial direction, and pivots the rear The pivoting part and the front pivoting part; and a nut locked on the bolt; it is characterized in that: the rear pivoting part is connected with the lower blade part by a front extension, and the rear pivoting part is connected by the The front extension section is offset from the lower blade portion by a distance toward the rear of the axial direction; the front pivot portion is connected to the upper blade portion by a rear extension portion, and the front pivot portion is directed forward in the axial direction through the rear extension section The upper blade part is staggered by a distance; the edge of the lower blade part forms a straight shape, and the blade edge of the upper blade part forms an upward curved arc; the front pivot part is located in front of the rear pivot part, the The lower blade portion is located at the upper blade portion through the cooperation of the front extension section and the rear extension section. In the front, a hook-shaped rod is connected to the other side of the front pivoting part, and the hook-shaped rod is connected to the lower handle, wherein the hook-shaped rod makes the position of the lower handle not lower than the lower blade; The handle is formed in a ring shape, and a support rod is provided to separate an upper ring and a lower ring, wherein the area of the upper ring is larger than that of the lower ring, the upper ring can accommodate at least three fingers of the user, and the lower ring can accommodate To accommodate one of the user's fingers. The sheet metal scissors according to claim 1, wherein the first blade body and the second blade body are integrally formed. The sheet metal scissors of claim 1, wherein a rib surrounds the outer periphery of the lower handle. The sheet metal scissors according to claim 1, wherein a spring is arranged between the upper handle and the lower handle. The sheet metal scissors according to claim 4, wherein the spring is a torsion spring or a pressure spring. The sheet metal scissors according to claim 1, wherein the lower blade portion has a rear side surface of the upper blade portion, and the rear side surface has a plurality of concave portions.

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