JP3005271U - Staple with a pullout prevention function - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to prevent the driven driving leg from coming off easily so that the decorative plate or the like can be strongly held to the base material. In a staple 1 having a pair of driving legs 2, at least one tip taper portion 3 of the driving leg 2 is provided asymmetrically with respect to a central axis of the driving leg 2. A step-out preventing step portion 4 is provided on the outer peripheral surface 2a and the inner peripheral surface 2b of the one driving leg portion 2.
Therefore, at the time of driving, the staple 1 bends in a direction corresponding to the asymmetrical shape of the tapered end portion 3 (in the case of the drawing, the directions of the driving leg portions 2 expand), so that the pull-out prevention is performed more reliably. . In addition, the step portion 4 for preventing slipping out
May be provided in a direction inclined with respect to the central axis, and the staple 1 may be bent and driven by the action of the inclined step portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a staple having a driving leg provided with a tip tapered portion and an inclined step portion for preventing slipping out.

[0002]

[Prior art]

 In general, a staple having a pair of driving legs facing in the same direction can make a portion visible from the outside when driven into a material to be driven, smaller than a normal nail. Therefore, this staple is mainly used when attaching a decorative plate or the like to a base material framed with wood or the like.

In the staples that have been driven in, the driving legs pass through the decorative plate or the like to reach the base material, and by ensuring the frictional force between the staple and the base material, the decorative plate or the like is used as the base material. Can be held in. At this time, the normal staple is driven into the material to be driven (decorative plate or the like and the base material) with the driving legs in the original orientation.

As a result, both the driving leg portions are in a state of being directly driven into the material to be driven, and when the force opposite to the driving direction acts on the staple, the driving leg portions are easily formed. It was something that would slip out.

Therefore, conventionally, as a staple for preventing falling out, a tapered end portion is formed asymmetrically with a central axis of a driving leg portion, and when the driving is performed, the driving leg portion is driven while being bent. There is one that is designed to be driven into wood. As a result, even when a force opposite to the driving direction is applied, the direction of this force is deviated from the driving leg part so that it cannot be easily removed from the base metal.

[0006]

[Problems to be solved by the device]

 As described above, the conventional staple is designed such that the driving leg is bent so that it is driven into the material to be driven. There is a problem in that it may come off from the material relatively easily, and it is not possible to reliably hold the decorative plate and the like to the base material.

In view of this, the present invention provides a staple having a pull-out prevention function that prevents the driven-in driving leg from coming off easily and makes it possible to strongly hold the decorative plate or the like against the base material. The purpose is to do.

[0008]

[Means for Solving the Problems]

 The staple having the removal preventing function of the present invention has a pair of driving legs which are oriented in the same direction. At least one of the driving leg parts has a tapered end portion which is the central axis of the driving leg. It is provided in an asymmetrical manner with respect to, and further, a step-out prevention step is provided on the peripheral surface of the one driving leg.

Further, an inclined step portion is provided on at least one circumferential surface of the driving leg portion. For example, one and the other of the driving leg portions are provided as the step portions of each of the driving leg portions. The shape is such that the direction of misalignment when driving is different. Further, in the case where this step is provided, the tip tapered portion is provided asymmetrically with respect to the central axis of the driving leg as described above.

[0010]

[Action]

 As a result, when the staple of the present invention is driven, the driving leg is driven while bending in a direction deviating from the driving direction due to the action of the asymmetrical tip tapered portion or the inclined step portion. Further, after being driven, it is locked to the slip-out preventing step portion or the inclined step portion.

[0012] Therefore, there are two dropouts: the driving leg is bent and displaced from the driving direction, and the stepping portion for preventing slipping out or the locking force by the inclined stepped portion is obtained. As a result of ensuring the prevention function, the driving leg does not come off easily.

[0012]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. In the figure, 1 and 1a are staples, 2 is a driving leg, 2a is an outer peripheral surface, 2b is an inner peripheral surface, 3 is a tapered end portion, 3a is a large tapered surface, 3b is a small tapered surface, and 4 is a missing portion. Preventing step portion, 5 is a decorative plate, 6 is a base material, 7 and 7a are connecting staples, 8 and 8a are step portions, 9 is a connecting staple forming sheet, 10 is an upper die for forming step portions, and 10a is A step-forming lower die, 11 is an upper cutting blade, 12 is a lower cutting blade, 13 is a bending punch, and 14 is a bending die.

Here, as shown in FIG. 1, the staple 1 is formed of metal, synthetic resin, or the like, and is provided with a pair of left and right driving leg portions 2 facing in the same direction. It should be noted that the width of the driving leg 2 and the leg length are not limited to those shown in the figure, and are arbitrary, and are set in such a manner that they can be set in a stapler, for example.

Next, the tip tapered portion 3 of the driving leg 2 is asymmetrical with its tip displaced outward from the central axis of each driving leg 2, that is, a large taper surface on the inner portion. A small taper surface 3b is formed on the outer side of 3a. A step-out prevention step portion 4 is provided on each of the outer peripheral surface 2a and the inner peripheral surface 2b of each driving leg portion 2.

The step-preventing step portion 4 is formed continuously in a tapered shape so as to reduce the cross-sectional area toward the tip tapered portion 3, but is not limited to the illustrated one. As long as a predetermined locking force can be obtained with respect to the base material to be driven, it may be concave or convex, and the number thereof is also arbitrary.

It should be noted that the slip-out preventing step portion 4 is not limited to being provided on both of the driving leg portions 2, and may be provided on either one. Further, as shown in the drawing, instead of being provided on both the outer peripheral surface 2a and the inner peripheral surface 2b, it may be provided on either one of the outer peripheral surface 2a and the inner peripheral surface 2b. Alternatively, it may be provided on the rear side peripheral surface.

Next, the usage state of the staple 1 will be described. As shown in FIG. 2, when a decorative plate 5 or the like is set on the base material 6 and the staple 1 is driven in the direction of the arrow, the driving leg portion The large taper surfaces 3a of each of the two Nos. 2 deviate from the driving direction in the decorative plate or the like 5 and the base material 6 while being bent and driven.

That is, each of the driving leg portions 2 advances while bending in the direction of the small taper surface 3b by receiving a large pressure when the large taper surface 3a is driven. The parts 2 are bent outward from each other.

As a result, even if a force acts in any direction, for example, in the direction opposite to the direction in which the decorative plate 5 is disengaged (the driving direction of the driving leg portion 2), at least one of the driving legs is driven. Since the portion 2 is displaced from the direction of this force, the driving leg portion 2 does not easily come off together with the increasing action of the friction force by the coming-off prevention step portion 4, and the decorative plate 5 or the like is used as the base material 6 I try to keep it strong.

Such a removal preventing function is effectively exhibited when the driving leg portions 2 are bent and driven in different directions, and in particular, the tip tapered portions 3 are separated from each other as shown in FIG. The state shown in is preferable.

It is to be noted that the large taper surface 3a and the like are not limited to being provided on both of the driving leg portions 2 as shown in FIG. 1, but may be provided on either one. In this case, when driving into the base material 6 or the like, the driving leg 2 provided with the large taper surface 3a or the like is driven while bending toward the small taper surface 3b in the same manner as described above, but for the other driving purpose. The leg 2 is driven in without bending in the driving direction.

In this case as well, when a force acts on the staple 1 in any direction, at least one driving leg 2 is displaced from the direction of the force and the pull-out preventing step is performed. The driving leg portion 2 does not easily come off due to the action of each portion 4.

Further, as shown in the figure, the large tapered surface 3 a is not limited to being provided inside the tip tapered portion 3, and if the tip tapered portion 3 is displaced from the central axis of the driving leg portion 2, It may be provided at one location on the outer side, the front side, the rear side, or two locations where these are combined (for example, the inner side and the front side). The shapes of the large tapered surfaces 3a are not limited to being the same.

Furthermore, instead of providing the large taper surface 3a at the same location on each of the driving legs 2, it may be provided at a different location. For example, the large tapered surface 3a may be provided on one of the tip tapered portions 3 on the front side thereof and on the other tip tapered portion 3 on the rear side thereof. In this case, the driving leg portion is provided. Each of the two Nos. 2 (as shown in FIG. 6) is in a state in which the front end tapered portions 3 are spread back and forth.

Next, this staple 1 is formed into a state of interlinked staples 7 as shown in FIG. 3 for setting on the stapler. Therefore, the processing of the leading end tapered portion 3 having the large tapered surface 3a and the like and the formation of the slip-out preventing step portion 4 are easily performed in the state of the connecting staple 7.

That is, the linked staples 7 are formed in the order shown in FIG. First, the connecting staple forming sheet 9 to which a plurality of wires are adhered is sandwiched between the step forming upper die 10 and the step forming lower die 10a to form the step preventing steps 4 on the upper and lower surfaces at appropriate intervals. . The part where the step-out preventing step 4 is formed becomes the part of the driving leg 2 in the staple 1.

Subsequently, the connecting staple forming sheet 9 is cut into an appropriate length by the upper cutting blade 11 and the lower cutting blade 12. At this time, the cutting edge of the cutting upper blade 11 is set to be long and the cutting edge of the cutting lower blade 12 is set to be short so that the large taper surface 3a is provided at the portion cut by the cutting upper blade 11. The tip tapered portion 3 is processed at the same time as the work.

Then, the intermediate portion of the cut member is bent by the bending punch 13 and the bending die 14 to be formed into a predetermined U-shape so that the connected staple 7 is formed. It should be noted that the present invention is not limited to providing the large taper surface 3a at the same time as the above cutting, but after the connecting staple forming sheet 9 is appropriately cut to provide the U-shaped connecting staple, the inside of the tip taper portion 3 is A large taper surface 3a may be provided on each staple 1 by cutting it in the connecting direction.

Further, the formation of the slip-off preventing step portion 4 is not limited to the formation in the state of the connected staple forming sheet 9, and, similarly to the above, after the U-shaped connecting staples are provided, they are respectively punched. The slip-out preventing leg portion 2 may be provided with the slip-out preventing step portion 4.

Subsequently, as shown in FIG. 5, the staple 1a is provided with a plurality of inclined step portions 8 and 8a on the outer peripheral surface 2a and the inner peripheral surface 2b of the driving leg portion 2, respectively. The step portions 8 and 8a are formed in a groove shape in which their inclination directions are opposite to each other. The material and shape of the staple 1a are the same as those shown in FIG.

The step portions 8 and 8a may be provided on only one of the driving leg portions 2. Further, the stepped portions 8 and 8a may be provided on the front side peripheral surface and the rear side peripheral surface of the driving leg portion 2. At this time, the step portions 8 and 8a are provided on the peripheral surface of any combination including the case of a single peripheral surface.

The tip of the tip tapered portion 3 coincides with the center axis of each driving leg 2, but is not limited to this. Instead, as shown in FIG. The large taper surface 3a and the small taper surface 3b may be formed by deviating from the central axis of the driving leg portion 2.

Next, the usage state of the staple 1a will be described. As shown in FIG. 6, when the staple 1a is driven in the direction of the arrow to the base material 6 on which the decorative plate 5 or the like is set, the driving leg portion is driven. Each of the two pieces is driven while being bent in the decorative plate 5 and the base material 6 while being displaced from the driving direction by the step portions 8 and 8a.

That is, each of the driving leg portions 2 advances while curving in the inclination direction when the step portions 8 and 8 a receive a force guided in the inclination direction from the decorative plate 5 and the base material 6. As a result, one of the driven driving leg portions 2 is bent forward and the other is bent backward.

As a result, as in the case shown in FIG. 1, even when a force acts in any direction, at least one driving leg 2 is displaced from the direction of the force and the step portions 8, 8 a Since the locking force is secured by both, the driving leg 2 is prevented from easily coming off.

Note that such a slip-out prevention function is effectively exhibited when the driving legs 2 are bent and driven in different directions, and in particular, the tip tapered portions 3 are separated from each other. Such a state shown in FIG. 6 is preferable.

When the step portion 8 is provided on either one of the driving leg portions 2, the driving leg portion 2 provided with the step portion 8 has the above-described structure when the step portion 8 is punched into the base material 6 or the like. Similarly, the driving leg 2 is driven while bending in the inclination direction, but the other driving leg 2 is driven without bending in the driving direction.

Also in this case, at least one driving leg 2 is displaced from the direction of the force regardless of the direction of the force applied to the staple 1 in the same manner as described above. In addition to the action of 8, the driving leg portion 2 does not easily come off.

In addition, for example, when the step portions 8 and 8a are provided on the front side peripheral surface and the rear side peripheral surface of each of the driving leg portions 2 with their inclination directions being opposite to each other, The driving leg 2 is in a state in which the tip tapered portions 3 (as shown in FIG. 2) are opened to the left and right with respect to each other.

When the large taper surface 3a and the small taper surface 3b as shown in FIG. 1 are formed on one or both of the tip taper portions 3 of the staple 1a, the driving leg portion 2 is driven. At this time, in addition to the action of the step portions 8 and 8a, each of the driving leg portions 2 is driven while being bent by the action of the large taper surface 3a described above.

In this case, the manner in which the large taper surface 3a is provided is similar to that shown in FIG. 1, at one location inside, outside, front side, rear side of the tip taper portion 3 or a combination thereof. Provide it at any of the points.

Further, when the large taper surface 3a or the like is provided on both of the tip tapered portions 3, it is optional whether the large taper surface 3a is provided at the same location on each tip tapered portion 3 or at a different location. Also, the shapes of the large taper surfaces 3a are not limited to being the same.

Next, this staple 1a is formed in the state of interlocking staples 7a as shown in FIG. 7 for setting on the stapler as in the case shown in FIG. Therefore, the formation of the step portions 8 and 8a and the treatment of the tip tapered surface portion 3 are easily performed in the state of the connecting staple 7a.

The connected staples 7a are formed in the order shown in FIG. 4, similarly to the connected staples 7. Specifically, as the step forming upper die 10 and the step forming lower die 10a, those having a plurality of lines for forming the inclined step portions 8 and 8a are used.

Further, when the large taper surface 3a or the like is provided on the tip taper portion 3, the large taper surface 3a is provided at the time of cutting by using the upper cutting blade 11 and the lower cutting blade 12 as shown in FIG. Alternatively, after forming the connecting staples 7a, the inside or outside of the tip taper portion 3 may be shaved in the connecting direction to provide the large taper surface 3a on each staple 1.

Furthermore, the formation of the stepped portions 8 and 8a is not limited to the formation of the connected staple forming sheet 9, and similarly to the above, after the U-shaped connected staples are provided, the respective staples are formed. You may make it provide the stepped parts 8 and 8a in the leg part 2 for insertion.

When the step portions 8 and 8a are provided, as shown in FIG. 1, a portion for bending the driving leg portion 2 and a securing force for the base material 6 and the like are secured. It is not necessary to separately provide the step portion of. That is, the step portions 8 and 8a have both the function of the large taper surface 3a and the function of the slip-out preventing step portion 4 shown in FIG.

[0048]

[Effect of device]

 In the present invention, the taper tip of the driving leg is provided asymmetrically with respect to the center axis of the driving leg, and the step-out prevention step is provided on the peripheral surface of the driving leg. When driving, the driving leg shifts from the driving direction and bends, and the step-prevention step is locked to the base material, etc. Even when the force for pulling this out is exerted, the driving leg can be prevented from easily coming off, and the decorative plate or the like can be reliably held on the base material.

Further, in the case where the stepped portion is provided on the peripheral surface of the driving leg portion, when the driving leg portion is driven, the stepped portion shifts from the driving direction, and the stepped portion is bent. Since it is locked against the material or the like, it is possible to prevent the driving leg from coming off easily as in the above, and it is possible to securely hold the decorative plate or the like on the base material.

Further, in the case where the inclined step portion is provided on the peripheral surface of the driving leg portion, only by this step portion, the bending action of the driving leg portion at the time of driving and locking to the base material or the like Since the pull-out prevention function by each is secured, the manufacturing process can be simplified and the manufacturing cost can be reduced as compared with the case where each is formed separately.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an explanatory view of a usage state of the staple shown in FIG.

FIG. 3 is a perspective view showing a state in which the staples shown in FIG. 1 are connected.

FIG. 4 is an explanatory view showing a method of forming the interlinked staples shown in FIG.

FIG. 5 is a perspective view showing another embodiment of the present invention.

FIG. 6 is an explanatory view of a usage state of the staple shown in FIG.

FIG. 7 is a perspective view showing a state in which the staples shown in FIG. 5 are connected.

[Explanation of symbols]

 1, 1a ... Staple 2 ... Driving leg 2a ... Outer peripheral surface 2b ... Inner peripheral surface 3 ... Tip taper portion 3a ... Large taper surface 3b ... Small taper surface 4 ... Stepping portion for preventing slippage 5 ... Decorative plate, etc. 6 ... Base material 7, 7a .. Connected staples 8, 8a .. Stepped portion 9 ... Sheet for forming connected staples 10 ... Upper side for forming stepped portion Die 10a ... Lower die for step formation 11 ... Cutting upper blade 12 ... Cutting lower blade 13 ... Bending punch 14 ... Bending die

Claims (9)

[Scope of utility model registration request] 1. A staple having a pair of driving leg portions facing in the same direction, wherein at least one tip taper portion of the driving leg portion is asymmetric with respect to a central axis of the driving leg portion. In addition to being provided in a state, a step portion for preventing slippage is provided on the one peripheral surface, and the driving leg portion is driven while being bent in a direction deviated from the driving direction by the action of the tip tapered portion. A staple with a pull-out prevention function. 2. The staple having a slip-out preventing function according to claim 1, wherein each of the driving leg portions is provided with the asymmetric tip taper portion and the slip-out preventing step portion. 3. The asymmetric tip taper portion is shaped so that the direction of the deviation at the time of driving is different between one side and the other side of the tip taper portion. A staple with a pull-out prevention function. 4. A staple having a pair of driving leg portions facing in the same direction, wherein an inclined step portion is provided on at least one peripheral surface of the driving leg portion, and the driving leg portion comprises: A staple having a pull-out prevention function, characterized in that the staple is bent while being bent in a direction deviated from the driving direction by the action of the step portion. 5. The staple having a slip-out preventing function according to claim 4, wherein the step portion is provided on each of the driving leg portions. 6. The slip-out prevention function according to claim 5, wherein the stepped portion has a shape such that the direction of the deviation at the time of driving is different between one side and the other side of the tip tapered portion. With staples. 7. The at least one tip tapered portion of the driving leg portion is provided asymmetrically with respect to the central axis of the driving leg portion. A staple with a pull-out prevention function. 8. The staple having a slip-out preventing function according to claim 7, wherein each of the driving leg portions is provided with a tip taper portion in the asymmetrical state. 9. The asymmetrical tapered tip portion has a shape such that the direction of the deviation at the time of driving is different between one side and the other side of the tapered portion. A staple with a pull-out prevention function.