JPH0556363U - Staple guide device for stapler - Google Patents

Abstract

(57) [Summary] [Purpose] While using a staple guide that can move in the magazine, the inclined surface of the tip of the staple guide,
Provided is a device that guides staples perpendicularly to a magazine by means of protrusions and widening parts to ensure that the staples are inserted into the clincher groove. [Structure] In a stapler 1 having a magazine 3 having a staple guide 8 for supporting the lower surface of the crown of a staple 6, the staple guide 8 has a bottom wall 10 and side walls 1.
The front end of the staple guide 8 is constantly urged by abutting the front end of the staple guide 8 against the back surface of the front end of the magazine 3 while having a U-shaped cross section composed of 1 and 11 and being movable in the longitudinal direction by a predetermined distance with respect to the magazine 3. The inclined surfaces 24, 2
4 and the projecting portions 25, 25 projecting toward the front end cover 18 and the widened portions 26, 26 that widen downward are provided.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a staple guide device in a stapler, and more specifically, in a stapler of a type having a staple guide that supports a lower surface of a staple crown in a magazine, the staple is placed in a bending groove of a clincher arranged opposite to the staple ejection port. The present invention relates to a staple guide device that reliably guides a sheet.

[0002]

[Prior art]

 Generally, in a hand stapler that can be operated with one hand, the magazine has a U-shaped cross section, and the bottom wall of the magazine supports the staple leg tips. With this stapler, the paper to be stapled has a substantially constant thickness, and it is possible to staple with one type of staple length staple. On the other hand, for a large stapler with a handle, there is a wide range in the number of sheets that can be spelled, and it was desired that one type of stapler be used for thin to thick paper. With such a stapler, it is necessary to supply staples for some of the staples used, so pressing the pusher from the rear stabilizes staples of different staple lengths. A magazine equipped with a staple guide that supports the lower surface of the staple crown has been adopted as a structure that can be fed.

For a magazine having such a staple guide, a structure of Japanese Utility Model Publication No. 1-111427 in which the staple guide is movable in the longitudinal direction of the magazine is known. By making the staple guide movable in the magazine, it is not necessary to assemble a gap between the back surface of the magazine tip and the tip of the staple guide as a single staple clearance. However, the outer width dimension of the staple guide is the same as or smaller than the inner width dimension of the staple, which facilitates passage of the connecting staples. Therefore, when the adhesive between staples is cut by the driver, the tip of the staple to be ejected may be ejected obliquely rearward and may not enter the groove of the clincher. For this reason, there are problems that the ejected staples are jammed in the magazine and that the staples are not clinched properly.

[0004]

[Problems to be solved by the device]

 By using a staple guide that can move in the magazine, and by making the outer width below the tip of the staple guide larger than the inner width of the staple and providing an inclined surface outside the tip, the inclined surface and the inside of the magazine It is an object of the present invention to provide a device that holds staples by sandwiching them by the corner portions of the staples so that the staples are vertically ejected to the magazine so that the staples can be securely inserted into the clincher groove.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a staple guide device for a stapler according to the present invention is a stapler 1 having a magazine 3 having a staple guide 8 for supporting a lower surface of a crown of a staple 6, the staple guide 8 having a bottom wall 10. The side wall 11, 11 has a U-shaped cross section and is movable in the longitudinal direction by a predetermined distance with respect to the magazine 3, and its front end is constantly urged against the back surface of the front end cover 18 of the magazine 3 to form a staple guide 8. A staple guide portion 21 is provided at the front end of each of the outer edge portions 23, 23 of the tip end surfaces 22, 22 of the side walls 11, 11 and the inclined guide surface 21 is formed except the upper portion. , 24, projecting portions 25, 25 projecting toward the front end cover 18, and widened portions 26, 26 that widen downward. It is characterized in.

[0006]

【Example】

 In FIG. 1, 1 is a stapler, and a magazine 3 having a handle 2 is rotatably supported by a base 4. By rotating the handle 2, staples 6 are sequentially ejected from a staple ejection port 5 provided at the front end of the magazine 3 by a driver (not shown). A clincher 7 is provided on the base 4 so as to face the staple ejection port 5. With such a configuration, it is possible to staple the paper placed on the clincher 7 above. The magazine 3 is provided with a staple guide 8 below the staple 6 and supporting the lower surface of the staple crown in the longitudinal direction. The staple guide 8 is slidable in the magazine 3 for a predetermined distance. The staple guide 8 is constantly urged by a tension spring 9 toward the tip cover 18 side of the magazine 3 having the staple ejection port 5.

Next, the mounting structure of the staple guide 8 to the magazine 3 will be described in detail. The staple guide 8 has a U-shaped cross section composed of a bottom wall 10 and both side walls 11 and 11, and is provided with two guide square holes 12 and 12 spaced apart in the longitudinal direction of the bottom wall 10. .. On the bottom wall 13 of the magazine 3 on which the staple guide 8 slides, guide hooks 14 and 14 to be inserted into the guide square holes 12 and 12 are formed so as to project therefrom. When sliding, it can move only in the longitudinal direction of staple feeding.

A square hole 15 is provided between the guide square holes 12 of the staple guide 8. A spring hook 16 protruding from the bottom wall 13 of the magazine 3 faces the square hole 15. The front end of the staple guide 8 is always attached to the front end of the magazine 3 by the tension springs 9 whose both ends are engaged with the spring hook 16 and the spring hook 17 protruding from the staple guide 8. The back surface of the cover 18 is abutted and biased. For the staple 6, the crown 6b is placed on the upper surface supporting portions 19 and 19 of the side walls 11 and 11 of the staple guide 8, and the legs 6a and 6a are placed between the side walls 11 and 11 of the staple guide 8 and the side walls 20 and 20 of the magazine 3. It is supported in the inserted state.

The staple guide portion 21 provided at the front end of the staple guide 8 will be described with reference to FIG. The staple guide portion 21 is provided on both side walls 11, 11 further protruding from the end surface of the bottom wall 10 of the staple guide 8. The outer edge portions 23, 23 of the front end surfaces 22, 22 of the side walls 11, 11 are formed with inclined surfaces 24, 24 except for the upper portions. Further, the lower portion of the staple guide portion 21 is provided with protruding portions 25, 25 protruding toward the front end cover 18 side and widened portions 26, 26 widening downward. The distance between the upper surface supporting portions 19, 19 of the staple guide 8 and the rear surface of the front end cover 18 when the protruding portions 25, 25 are in contact with the rear surface of the front end cover 18 is set to a size that allows one staple to pass therethrough. Has been done. Further, the outer width dimension of the widened portions 26, 26 is formed wider than the inner width dimension between the legs 6a, 6a of the staple 6.

[0010]

[Action]

 The guide function when the staple 6 is ejected by the above structure will be described. FIG. 3 (a) is a top view of the vicinity of the staple ejection port 5, which is a main part of the staple guide device, and FIG. 3 (b) is a bottom view of the same. The leading staple 6 is in contact with the back surface of the front end cover 18 by a staple pusher (not shown). On the other hand, the protrusions 25, 25 at the front end of the staple guide 8 are also urged against the back surface of the front end cover 18 by the tension spring 9. When the leading staple 6 is hit by a driver (not shown) in this state, the insides of both legs 6a, 6a of the staple 6 come into contact with the inclined surfaces 24, 24 of the staple guide 8 as shown in FIG. 3 (b). .. On the other hand, since the individual staples 6 are connected to each other in a stick shape by an adhesive agent, the connection state due to the adhesion is cut off when the staples 6 are ejected by the driver. At this time, the leading staple 6 is ejected with its legs 6a, 6a tilted rearward, that is, on the left side in FIG. 3 (b), that is, in the direction away from the back surface of the front end cover 18 due to the adhesive cutting action. Become.

However, the inclined surfaces 24, 24 of the staple guide 8 are provided on the rear side, and as the staple 6 is driven out, the staple guide 8 is lowered while retracting the staple guide 8 with respect to the tension spring 9 for urging the staple guide 8. However, since the projecting portions 25, 25 are provided at the midpoints of the leading end surfaces 22, 22, the legs 6a, 6a of the staple 6 have their rear surfaces 6c, 6c slanted until their leading ends substantially project into the sheet. Guided by 24. On the other hand, the front surfaces 6d, 6d and the outer surfaces 6e, 6e of the legs 6a, 6a are urged toward the back surface of the front end cover 18 and the inside of the side walls 20, 20 of the magazine 3. In particular, due to the widened portions 26, 26 provided at the bottom of the staple guide portion 21, both legs 6a, 6a are deflected to the corners of the side walls 20, 20 of the magazine 3 and the front end cover 18, and are ejected from the magazine 3. The legs 6a, 6a of the staple 6 are securely held and ejected vertically from the magazine.

[0012]

[Effect of the device]

 The staple 6 is deflected toward the back surface of the front end cover 18 at the front by the inclined surfaces 24, 24 of the staple guide portion 21 from the rear during the descending of the ejection by the driver, and the staple 6 is widened in the vicinity of the staple ejection port 5. Since the legs 6a, 6a are deflected to the corners between the side walls 20, 20 of the magazine 3 and the front end cover 18 by the portions 26, 26, the legs 6a, 6a are always held and ejected. Further, since the legs 6a, 6a are not displaced rearward at the time of cutting with the staple 6 positioned next to the driving, the staple 6 can be ejected perpendicularly to the magazine 3, and the staple legs of the lower clincher 7 can be bent. Make sure to guide the groove. Therefore, it is possible to prevent problems such as the staple 6 being struck obliquely on the sheet and not being clinched.

[0013]

[Brief description of drawings]

FIG. 1 is a perspective view of a stapler having a staple guide device according to the present invention.

FIG. 2 is a perspective view of a main portion of a staple guide device.

FIG. 3A is a top view of a main part of a staple guide device, and FIG. 3B is a bottom view of a main part of a staple guide device.

[Explanation of symbols]

 1 Stapler 2 Handle 3 Magazine 4 Base 5 Staple ejection port 6 Staple 7 Clincher 8 Staple guide 9 Tension spring 10 Bottom wall 11 Sidewall 18 Front end cover 21 Staple guide part 22 Tip surface 23 Outer edge part 24 Inclined surface 25 Projection part 26 Wide part

Claims (1)

[Scope of utility model registration request] 1. A stapler 1 having a magazine 3 provided with a staple guide 8 for supporting a lower surface of a crown of a staple 6, the staple guide 8 having a bottom wall 10 and side walls 11, 11 having a U-shaped cross section. With respect to the front end of the magazine 3, the front end of the staple guide 8 is always urged against the back surface of the magazine 3, and a staple guide portion 21 is provided at the front end of the staple guide 8. The part 21 is formed on each of the outer edge portions 2 of the front end faces 22, 22 of the side walls 11, 11.
3 and 23, the inclined surfaces 24 and 24 formed excluding the upper portion, the protruding portions 25 and 25 protruding toward the front end cover 18, and the widened portions 26 and 26 that widen downward. A staple guide device for a stapler.