JPH055375U - Start switch for electric stapler - Google Patents

Abstract

(57) [Summary] [Construction] An angle relief portion 16b for escaping the corner portion 6a of the material to be bound is formed in the material-to-be-bonded material contact portion 16 of the switch lever 7. A support surface 20 that supports the lower surface, and a pair of diverging rising walls 21 that are formed upright from the support surface to receive both end surfaces of the corners of the material to be bound.
In addition to the above, the holding wall 22 is formed on the inner side surface of the standing wall so as to be engaged with the upper surfaces of both side ends of the corner portion of the material to be supplied and prevent the bending thereof. [Effect] When the number of the materials to be bound 6 is small and is pressed against the switch lever 7b, the materials to be bound 6 are
The upper surface of the corner portion 6a of the above is engaged with the pressing projection 22 and is restrained from bending upward. Therefore, it is possible to prevent the corner 6a from being curled and bent to cause a pressing failure against the switch lever 7b.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a start switch that is activated by pressing the corners of a material to be bound in an electric stapler.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, an electric stapler is known in which a driver is driven by an electric motor, a staple supplied from a magazine is driven onto a clincher provided on a binding table, and a stapled material supplied on the binding table is bound. .. A start switch is arranged slightly inside the clincher section, and when supplying the material to be bound onto the binding table, the end of the material to be bound is pressed against the start switch to turn on the electric motor. .. By the way, the feeding direction of the material to be bound and the direction of connecting the clincher portion and the portion in contact with the center switch are aligned, and the material to be bound is pressed against the contact portion of the start switch when feeding the material to be bound. At this time, the material to be bound will rotate around this contact portion. Therefore, in order to match the actual binding position of the material to be bound with the aimed position, the applicant of the present application has proposed that As described in Japanese Utility Model Publication No. 38-46565 (Actual Publication No. 2-130778), a start switch is proposed in which a corner portion of a material to be bound is released at a contact portion of the material to be bound of a switch lever.

However, according to such a switch mechanism, when the number of the materials to be bound is small, the rigidity of the entire materials to be bound is very small. Therefore, when the start switch is pressed, the corners of the materials to be bound are pressed. Sometimes the part floated up and bent, and reliable switching could not be performed.

[0004]

[The purpose of the device]

 It is an object of the present invention to solve the above-mentioned drawbacks and to provide a start switch for an electric stapler in which the material to be bound is not bent even when the corners of the material to be bound are pressed during binding.

[0005]

[Means for achieving the purpose]

 In order to achieve the above object, a start switch in an electric stapler according to the present invention comprises a base having a clincher portion at a front end, a magazine for ejecting staples toward the clincher portion, and an electric motor for rotationally driving the magazine. A motor is provided, and an input switch fixed on the pedestal and a switch lever for abutting the material to be stapled supplied at the time of binding to perform an input operation of the input switch are provided at a rear position of the clincher. , The switch lever is normally urged in a direction in which the switch lever is separated from the input switch and protrudes upward from the clincher portion, and the binding material supplied at the time of binding presses the contact portion of the input switch. In the starter switch of the electric stapler, the corner release of the corner of the material to be stitched is made to come into contact with the material to be stitched of the switch lever. A pair of divergent ends that form a ridge and that support the corner relief portion to support the lower surface of the corner of the material to be bound, and to receive both end faces of the corner of the material to be bound upright from the support surface. The inner wall surface of the standing wall is formed with a pressing ridge that engages with the upper surfaces of both side ends of the corners of the supplied material to be prevented from bending. Characterize.

[0006]

[Function and effect of the device]

 According to the above configuration, when the material to be bound is pushed into the predetermined position during binding, the end portion of the material to be bound comes into contact with the contact portion of the start switch, and this is rocked to input the input operation of the input switch. Let As a result, the switch of the electric motor is turned on, the magazine is driven, and the binding operation of the material to be bound is performed.

When binding the corner portion of the material to be bound, the corner portion of the material to be bound is inserted into the corner relief portion of the contact portion of the switch lever. The lower surface of the corner portion of the material to be bound inserted in the corner relief portion is supported by the support surface. Both end surfaces of the corner contact the inner surface of the standing wall. In addition, the upper surfaces of the both ends of the corner engage with the pressing ridges on the inner side of the standing wall. Therefore, when the number of sheets to be bound is small and pressed against the switch lever, the upper surfaces of the corners of the sheets to be bound are prevented from engaging with the pressing projections and bending upward. .. Therefore, it is possible to prevent the pressing failure of the switch lever from occurring due to the corner portion curling and bending.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a main part of an electric stapler. This electric stapler comprises a base 2 having a clincher 1 at the front end, a magazine 3 for ejecting staples toward the clincher 1, and an electric motor (not shown) for rotationally driving the magazine 3. At the front end of the magazine 3, a driver 5 is mounted so that it can move up and down and a staple (not shown) is loaded, and the driving force of the driver 5 (not shown) is activated by the rotational force of the electric motor. , The binding material 6 set on the clincher 1 is bound.

A start switch 7 is arranged at a rear position of the clincher. As shown in FIG. 2 and FIG. 4, the start switch 7 is composed of an input switch 7a fixed on the base 2 and a switch lever 7b for inputting the input switch 7a. The input switch 7a is fixed to a switch holder 8 provided integrally with the base 2. This switch holder 8 comprises two rising plates 10 and 11 facing each other at the center of a substrate 9 fixed to the base 2. The input switch 7a is long so that the movable contact portion 12 faces forward. It is fixed to the upper end of the rising plate 10. It should be noted that elongated holes 13 are formed in the lower portion of the rising plates 10 and 11 in the vertical direction.

The switch lever 7b has a contact portion 16 for the material 6 to be bound formed above one side of a box-shaped portion 15 having protruding shafts 14 on both sides. A switch pushing piece 17 having elasticity is located, a coil spring 19 is provided between the box-shaped portion 15 and the substrate 9 of the switch holder 8, and the protruding shaft 14 of the box-shaped portion 15 has a long length. It is engaged with the hole 13. The switch pushing piece 17 is arranged so as to face the movable contact portion 12 of the input switch 7a. Therefore, due to the coil spring effect, the switch lever 7b can be moved in the vertical direction, the contact portion 16 is always biased so as to project above the clincher 1 of the base 2, and the front-back movement around the projecting shaft 14 also occurs. The switch pushing piece 17 is normally biased in a direction away from the movable contact portion 12. With this structure, the switch lever 7b of the start switch 7 is pressed against the lower surface of the magazine 3 when the magazine 3 is lowered during the stapling operation and moves downward, so that even if the switch lever 7b is arranged at the center, it does not affect the spelling work. Will not be affected.

Next, the contact portion 16 of the switch lever 7b has a contact surface portion 16a formed at a right angle with respect to the feeding direction of the material 6 to be bound and an angular relief for releasing the corner portion 6a of the material 6 to be bound. And part 16b. The corner relief portion 16b is a support surface 20 that supports the lower surface of the corner 6a of the material 6 to be bound, and a divergent end that is formed upright from the support surface 20 to receive both end surfaces of the corner 6a of the material 6 to be bound. It is formed by a pair of upright walls 21. The tips of both standing walls 21 are open. Further, on the inner surface of the standing wall 21, there are formed pressing ridges 22 that engage with the upper surfaces of both ends of the corners 6a of the material 6 to be bent and prevent the bending thereof.

In the above structure, when the material 6 to be bound is pushed between the magazine 3 and the clincher 1 of the base 2 as shown in FIG. 1 at the time of binding, the end portion of the material 6 comes into contact with the start switch 7. Since it abuts on the abutting surface portion 16a of the switch 16 and is swung, the switch pushing piece 17 pushes the movable contact portion 12 of the input switch 7a for input operation. As a result, the switch of the electric motor is turned on, the driver 5 is driven, and the binding operation of the material 6 to be bound is performed. When the bound material 6 that has been bound is taken out, the switch pushing piece 17 is restored by its elasticity and separated from the movable contact portion 12, and the switch lever 7b is rocked and returned to the initial position.

The above-mentioned switch operation is the same when the corner 6a of the material 6 to be bound is bound, but in this case, as shown in FIG. 2, the corner 6a of the material 6 to be bound is the switch lever 7b. The contact portion 16 is inserted into the corner escape portion 16b. The lower surface of the corner portion 6a of the material 6 to be stapled inserted into the corner relief portion 16b is supported by the support surface 20. Both end surfaces of the corner portion 6 a contact the inner surface of the standing wall 21. Further, the upper surfaces of both ends of the corner 6a are engaged with the pressing ridges 22 on the inner side of the standing wall 21 (see FIG. 3). Therefore, when the number of the stapled members 6 is small and the switch lever 7b is pressed against the switch lever 7b, the upper surface of the corner portion 6a of the stapled member 6 is engaged with the pressing protrusion 22 and moves upward. Bending is suppressed. Therefore, it is possible to prevent the corner portion 6a from being curled and bent to cause a pressing failure against the switch lever 7b. Of course, when the number of the materials 6 to be bound is large, there is no problem because the rigidity of the material 6 to be bound as a whole is high.

When the magazine 3 moves up and down during the stapling operation, this up and down movement is absorbed by the coil spring 19 of the start switch 7.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of an electric stapler according to the present invention.

FIG. 2 is a perspective view of a start switch.

FIG. 3 is a sectional view taken along line XX of FIG.

FIG. 4 is an exploded perspective view of the start switch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clincher 2 Base 3 Magazine 5 Driver 6 Stitched material 6a Corner part 7 Start switch 7b Switch lever 16 Contact part 16b Corner relief part 20 Support surface 21 Standing wall 22 Pressing ridge

Claims (1)

Claims for utility model registration: 1. A pedestal having a clincher part at a front end, a magazine for ejecting staples toward the clincher part, and an electric motor for rotationally driving the magazine, and the clincher. Is provided at the rear position of the input switch fixed on the base and a switch lever for abutting the material to be bound supplied at the time of binding to perform the input operation of the input switch. In the start switch of the electric stapler, which is urged in a direction of separating from the clincher portion and protruding upward from the clincher portion and arranged so that the material to be bound supplied at the time of binding presses the contact portion of the input switch, An angle relief portion for escaping a corner portion of the material to be bound is formed in the portion to be joined to the material to be bound of the lever, and the corner relief portion is formed into a corner of the material to be bound. And a pair of diverging rising walls that are formed upright from the supporting surface and that receive the end faces on both sides of the corners of the material to be stitched, and are supplied to the inner surface of the rising wall. A start switch for an electric stapler, characterized in that pressing ridges are formed to engage with the upper surfaces of both side edges of the corners of the material to be bound and prevent its bending.