JP2009078327A - Stapler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stapler which dispenses with provision of a special stand, and can arbitrarily drive staples to a target member. <P>SOLUTION: The stapler is formed of: a staple driving portion 3 arranged on a side of a stapler main body 1, for driving out the staples; and a clincher 6 arranged on a side opposite to the stapler main body, for clinching the staples driven out from the staple driving portion 3. The clincher 6 is arranged on a distal end of a clincher arm 8 that is arranged in a manner movable in a direction orthogonal to the staple driving portion, and by moving the clincher arm 8, the clincher 6 is made movable between a first position in which the staples driven out from the staple driving portion 3 are clinched, and a second position in which an interval away from the staple driving portion 3 is extended. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a stapler that can adjust a gap between a staple driving unit and a clincher that bends the staple that has been driven out by changing the position of the clincher.

  In general, there are two types of staplers: small office staplers and large industrial staplers used by factories and professionals. Small staplers are manual or electric, but large staplers are driven by air pressure or combustion gas pressure. What you do is common.

  As an example of the case where a large stapler is required, for example, a cloth material is used as a connecting material in order to connect one duct for transferring air for air conditioning or heating to the atmosphere or another room to another duct. In some cases, it is not sufficient to simply bond the overlapped portion of the cloth material, and it is necessary to fasten it with staples. In this case, since the flange is formed at the end of the duct, if the gap between the staple launching portion and the clincher is not widened, the portion of the cloth material to be secured is connected to the launching portion and the clincher. It cannot be guided to be in between.

  As described above, as a mechanism for increasing or decreasing the interval between the staple launching portion and the clincher, the rear end of the clincher arm provided with the clincher at the front end is used as the main body of the stapler. It can be rotated up and down, opened downward and rotated to widen the gap above, leading the duct and fabric material inside, closed upward and rotated to penetrate the staple through the fabric material and fixed by bending. What you can do is known.

However, in the opening and closing mechanism as described above, it is good to open, but when the clincher is closed and rotated to a predetermined position facing the tip of the staple driving portion, the clincher position is lowered to withstand the staple driving force. In order to keep the clincher arm in its position so as not to shift, a large and powerful means is required. For this reason, conventionally, when closing and turning after opening and turning, the clincher arm is prevented from turning downward by placing the clincher arm on a predetermined base. According to this, since the clincher arm is supported by the base, it is always held at a predetermined position without being shifted downward.
German Patent No. 1908368

  However, the fact that such a special base is required means that it is not possible to perform a driving operation using staples in a free position and a free posture. Therefore, the application has to be limited.

  The present invention eliminates the above-mentioned problems and enables the clincher to be moved in a direction perpendicular to the staple driving direction rather than up and down, so that a staple can be driven into the target member freely without requiring a special base. The challenge is to provide a stapler.

  In order to solve the above-mentioned problem, the invention according to claim 1 is provided with a staple launching section for firing staples on the stapler main body side provided with the striking mechanism and a trigger for activating the striking mechanism, and a staple on the opposite side of the staple firing section. In a stapler provided with a clincher that bends staples that have been launched from the launching portion, the clincher is disposed at the tip of a clincher arm that is movable in a direction perpendicular to the staple launching portion, and the clincher arm is moved. Thus, the clincher is movable between a first position where the staple ejected from the staple ejecting portion is received and bent and a second position where the interval between the staple ejecting portion is widened.

  According to a second aspect of the present invention, in the first aspect, the clincher arm is movably attached to a slide guide provided integrally with the stapler body, and the clincher is in a first position on the slide guide and the clincher arm. And a holding mechanism for holding the position when it is located.

  According to a third aspect of the present invention, in the first or second aspect, the clincher is formed on a clincher base, and the clincher base has an extension formed on a tip side of the clincher.

  According to a fourth aspect of the present invention, in the clincher arm according to any one of the first to third aspects, the activation of the trigger for starting the stapler main body is performed on the clincher arm only when the clincher moves to the first position facing the staple driving unit. A safety mechanism is provided to make the system effective.

  According to a fifth aspect of the present invention, in the fourth aspect, the safety mechanism includes a slider that slides in parallel with the clincher arm, and the slider engages with the slider when the clincher moves to the first position together with the clincher arm. It is comprised by the contact member moved to the position which validates the action | operation of the said trigger, It is characterized by the above-mentioned.

  According to the first aspect of the present invention, the clincher is disposed at the tip of a clincher arm that is movably provided in a direction orthogonal to the staple driving portion, and the clincher is moved by moving the clincher arm. Since it is possible to move between the first position for folding the staple ejected from the staple launching section and the second position for widening the interval between the staple launching section, the clincher at the first position in the launching direction when the staple is launched. There is almost no movement. In this way, since a special stand for supporting the clincher arm is not required, the staple can be driven and fixed to the target member in a free posture at a free position in the air.

  According to the invention of claim 2, the clincher arm is movably attached to a slide guide provided integrally with the stapler body, and the clincher is in a first position on the slide guide and the clincher arm. Since a holding mechanism for holding the position is sometimes provided, the clincher is held so as not to move at the first position, and a good driving of the staple can be ensured. In addition, since the clincher hardly receives a force that moves in the moving direction when the staple is driven, the holding mechanism for holding the position of the clincher may be a simple structure.

  According to the invention of claim 3, the clincher is formed on the clincher base, and the clincher base is formed with the extension on the tip side of the clincher, so that the staple is erroneously moved before the clincher moves to the first position. Even if the punching operation is performed, since there is an extension on the tip side of the clincher, the staple that has been punched hits the extension and stops. Therefore, it is safe because the staple does not fly far due to malfunction.

  According to the invention of claim 4, the clincher arm is provided with a safety mechanism that enables the activation of the trigger for starting the stapler main body only when the clincher moves to the first position facing the staple driving unit. Therefore, since the staple driving operation is not erroneously performed before the clincher moves to the first position, safety is ensured.

  According to the invention of claim 5, the safety mechanism includes a slider that slides together with the clincher arm, and a contact member that engages the slider and activates the trigger when the clincher moves to the first position. Therefore, the position of the slider can be arranged at a position not directly related to staple ejection, and there is no injury of staple ejection.

  FIG. 1 is a front view of an embodiment of a stapler according to the present invention.

  In the above figure, reference numeral 1 denotes a stapler body, and reference numeral 2 denotes a grip. A staple driving unit 3 is formed below the stapler body 1, and a magazine 4 is integrally provided behind the driving unit 3. A large number of staples are loaded in the magazine 4 and supplied to the launching unit 3 in order from the leading staple by a feed mechanism (not shown). The stapler body 1 is provided with a striking mechanism (not shown) having the same striking cylinder and striking piston as those of a known pneumatically driven stapler, and compressed air is taken in from the rear end of the grip 2. It is a drive source that drives the striking mechanism. Reference numeral 5 is a trigger for activating the striking mechanism, and is arranged so as to be able to rotate around the shaft 9.

  Next, a clincher 6 is disposed below the staple driving unit 3. The clincher 6 is provided on a clincher base 7, and the clincher base 7 is fixed to a front end portion of the clincher arm 8. An extension 10 is formed on the clincher base 7 on the tip side of the clincher 6. The clincher arm 8 is provided on the slide guide 11 so as to be slidable in the front-rear direction perpendicular to the staple driving unit 3. Then, by the sliding movement of the clincher arm 8, the clincher 6 receives the staple punched out from the staple punching unit 3 immediately below the staple punching unit 3 and bends its leg portion (position in FIG. 1). The clincher 6 can be moved and adjusted between the second position (the position in FIG. 3) where the clincher 6 moves backward from the first position and widens the distance from the staple driving unit 3.

  The clincher 6 is configured by forming a pair of clincher grooves in parallel so as to be a bypass clinching.

  By the way, the slide guide 11 has a U-shaped cross section, the central portion 11a extends upward and the rear end portion of the magazine 4 is fixed, and the upper portion 12 thereof is attached integrally with the rear end lower portion 2a of the grip 2. It has been. The lower part of the slide guide 11 is long in the front-rear direction. As shown in FIGS. 3A, 3B, 4A, 4B, the upper plate part 14 is formed on the front part and the upper part of the rear part 13, respectively. 15 (see FIG. 2) is fixed by welding. As a result, the clincher arm 8 is guided to the bottom plate 11b and the upper plate portions 14 and 15 of the slide guide 11 with high accuracy and is guided so as to move up and down without movement. Further, an adjustment screw 16 having a rounded tip is attached to the front part and the center part of both side plates 13 so that the tip of the adjustment screw 16 contacts the side surface of the clincher arm 8 and the screwing depth of the adjustment screw 16 Is fixed by bonding or the like. As a result, when the clincher arm 8 slides, the clincher arm 8 is regulated by the adjustment screw 16 so as to move linearly without shaking left and right. Therefore, the clincher arm 8 can slide between the first position and the second position with high accuracy. A rubber operation unit 17 is provided at the rear end of the clincher arm 8 so that the slide operation can be easily performed.

  The clincher arm 8 is slidably attached to a slide guide 11 provided integrally with the stapler body 1, and the slide guide 11 and the clincher arm 8 are in their positions when the clincher 6 is in the first position. Is provided. As shown in FIGS. 3A and 3B and FIGS. 4A and 4B, the holding mechanism 18 is a holding rod provided in a freely retractable manner at the center of the operation portion 17 at the rear end of the clincher arm 8. 20 and a receiving hole 21 provided in the center of the rear upper plate portion 15. A head 22 at the upper end of the holding rod 20 is formed in a spherical shape, and the head 22 is always urged in a protruding direction by a spring 23. Therefore, when the clincher arm 8 moves to the first position, the head 23 of the holding rod 20 engages with the receiving hole 21 of the slide guide 11 as shown in FIGS. 3 (a) and 4 (a). As a result, the clincher arm 8 is held in the first position, and good driving of staples can be secured. If the clincher arm 8 is pulled backward strongly, as shown in FIGS. 3B and 4B, the holding rod 20 comes out of the receiving hole 21, and the clincher arm 8 can move backward. Since the clincher 6 hardly receives a force that moves in the sliding direction when the staple is driven, the holding mechanism for holding the position of the clincher 6 may have a simple structure.

  Next, in the vicinity of the trigger 5, as shown in FIG. 1, a safety mechanism 24 that enables the operation of the trigger 5 only when the clincher 6 moves to the first position facing the driving portion is provided. ing.

  The safety mechanism 24 includes a slider 25 that slides in parallel with the clincher arm 8, and a contact member 26 that engages the slider 25 when the clincher 6 is moved to the first position and activates the trigger 5. It is constituted by.

  That is, the slider 25 is an elongated member having an inclined surface 27 formed at the front end, and is slidable along the magazine 4 by a guide 30 fixed to the side surface of the magazine 4 as shown in FIG. The springs 31 provided on the guide 30 are always urged to move backward. Further, the rear end portion of the slider 25 is provided so as to be engageable with an engagement piece 29 formed so as to rise from the rear end portion of the clincher arm 8.

  As shown in FIG. 5, the contact member 26 is slidably disposed on a guide portion 32 provided in the vicinity of the trigger 5, and the upper end is provided on the trigger 5 so as to be rotatable about the shaft 19. The lower end of the contact lever 33 is engaged with the upper surface of the slider 25 and is always urged downward by a spring 39.

  According to the safety mechanism 24, when the slider 25 is in the rear position by the spring 31 (that is, when the clincher 6 is in the second position), the top surface 27 of the tip of the slider 25 is inclined low, so that the contact member 26 is also held in the lower position. As shown in FIG. 6 by mistake in this state, even if the trigger 5 is pulled and rotated upward, the tip of the contact lever 33 is in a low position, so the valve stem of the starting valve that activates the striking mechanism Since the 34 cannot be pushed in, the starting valve does not operate. For this reason, since the pulling operation of the trigger 5 is swung and invalidated, it is safe. On the other hand, when the slider 25 moves to the front position against the spring bias (that is, when the clincher arm 8 is at the first position), as shown in FIG. Since it is higher, the contact member 26 also moves upward, engages and pushes up the tip 33a of the contact lever 33, and the safety mechanism is released. In this state, as shown in FIG. 8, when the trigger 5 is pulled and rotated upward, the contact lever 33 pushes in the valve stem 34 of the start valve, so that the start valve operates effectively and staples are driven.

  Further, since the slider 25 is disposed at the position of the magazine 4 that is not directly related to the staple ejection, there is no injury of the staple ejection.

  Next, an operation mode of the stapler configured as described above will be described with reference to an example in which the duct connecting member illustrated in FIG. 13 is bound. In the figure, the ducts 40 on both sides are made of metal, have flanges 41 for connecting to walls or the like at both ends, and are connected to each other by a cloth material 42. The cloth material 42 and the duct 40 are fixed by caulking, and the end portions 43 wound and overlapped in a loop shape are fastened with staples 44.

  First, the clincher arm 8 is pulled to the second rear position as shown in FIG. 2 to widen the space between the staple punching portion 3 and the clincher 6, and the flange 41 is removed from this space as shown in FIG. One duct joint 40 is taken in. Then, as shown in FIG. 10, when the clincher arm 8 is pushed back to the first position, the clincher 6 is positioned at a predetermined position facing the staple driving unit 3. At this time, the clincher 6 is held at the first position by the holding mechanism 18, and the engagement piece 29 of the clincher arm 8 engages the slider 25 as shown in FIG. 7 and FIG. Since they are moved simultaneously, the contact lever 33 is pushed up by the contact member 26, and the staple driving operation is prepared. Therefore, when the trigger 5 is pulled, as shown in FIG. 8, the contact lever 33 pushes the valve stem 34 of the activation valve, the striking mechanism is activated, and the staple is ejected from the staple launching unit 3. The punched staple penetrates the cloth material 42 and is bent by the clincher 6. When this operation is repeated a predetermined number of times and the binding operation is completed, the clincher arm 8 is again pulled to the second rear position to widen the gap between the staple driving unit 3 and the clincher 6, and the duct joint is moved outside to clincher. The arm 8 may be pushed back to the first position.

  If the clincher arm 8 is intentionally moved forward and the clincher 6 does not move to the first position, the slider 25 also does not move to the position where the contact lever 33 operates the trigger 5 effectively. The stapler is not activated by the safety mechanism 24. However, as shown in FIG. 11, for example, the contact member 26 stops at a position where the contact member 26 hits the inclined surface 27 at the tip of the slider 25, that is, a half-end position before the first position, immediately before the clincher 6 reaches the first position. If the trigger 5 is erroneously pulled in this state, the trigger 5 is effectively operated to push the valve stem 34, and the staple driving operation is performed. However, as shown in FIG. 12, since the extension portion 10 is in front of the clincher 6 of the clincher arm 8, the staple that has been ejected hits the extension portion 10 and stops. For this reason, the staple is not fired in the air due to a malfunction, which is safe. Therefore, it is preferable that the position and length of the extension portion 10 of the clincher arm 8 are formed so as to correspond to the position and length of the inclined surface 27 of the slider 25.

  As described above, according to the stapler, the clincher 6 is disposed at the distal end of the clincher arm 8 slidably provided in a direction perpendicular to the staple driving unit 3 and the clincher arm 8 is slid, Since the clincher 6 is movable between a first position where the staple punched out from the staple punching section 3 is bent and a second position where the interval between the staple punching section 3 is widened, the first clincher 6 is moved when the staple is driven out. The clincher 6 at the position hardly moves in the launch direction. Thus, since a special base for supporting the clincher arm 8 is not required, the staple can be driven and fixed to the target member in a free posture at a free position.

  The above-described embodiment is configured so that the clincher arm can be slid in the front-rear direction. However, the clincher arm is not limited to such a configuration, and the clincher arm can be slid so as to rotate in the horizontal direction. May be.

The front view of one embodiment of the stapler concerning the present invention Front view of the stapler when the clincher is in the second position (A) (b) is a central longitudinal cross-sectional view of the main part showing an aspect of the clincher arm guide and holding mechanism (A) (b) is a top view of the principal part which shows the mode of the guidance and holding | maintenance mechanism of a clincher arm Illustration of safety mechanism Explanatory drawing of operating the trigger while the safety mechanism is working Explanatory drawing of the state where the safety mechanism is released Explanatory drawing of the state in which the trigger is operated with the safety mechanism released Front view with the object inside Front view of the clincher moved to the first position Explanatory drawing of the main part when the slider is stopped at a halfway intermediate position Explanatory drawing which shows the state which receives a staple in an extension part Duct perspective view

Explanation of symbols

1 Stapler body 3 Staple launching section 6 Clincher 8 Clincher arm

Claims (5)

A stapler provided with a staple driving unit for driving staples on a stapler main body side provided with a driving mechanism and a trigger for activating the driving mechanism, and a clincher for bending staples driven from the staple driving unit on the opposite side of the staple driving unit. ,
The clincher is disposed at the tip of a clincher arm provided so as to be movable in a direction orthogonal to the staple driving unit, and the clincher is moved from the staple driving unit by moving the clincher arm. A stapler characterized in that it can move between a first position where it is received and bent and a second position where the interval between the staple driving portion is widened.   The clincher arm is movably attached to a slide guide provided integrally with the stapler body, and the slide guide and the clincher arm have a holding mechanism for holding the position when the clincher is in the first position. The stapler according to claim 1, wherein the stapler is provided.   The stapler according to claim 1 or 2, wherein the clincher is formed on a clincher table, and an extension portion is formed on the clincher table on a distal end side of the clincher.   A safety mechanism is provided between the clincher arm and the trigger to enable the trigger to operate only when the clincher moves to a first position facing the staple driving unit. Item 4. The stapler according to any one of Items 1 to 3.   The safety mechanism includes a slider that slides parallel to the clincher arm, and a contact that engages the slider and moves to a position that activates the trigger when the clincher moves to the first position together with the clincher arm. The stapler according to claim 4, comprising a member.

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