JPH0659085U - Binder for paper stacks - Google Patents

Abstract

(57) [Abstract] [Object] The present invention relates to a binding tool for a bundle of paper, wherein a cylindrical body having elasticity in a radial direction is inserted into a binding hole of the bundle of paper, and stoppers are fitted to both ends thereof. The purpose of this is to make the sheet bundle substantially horizontal when the central portion of the sheet bundle is opened so that the vicinity of the binding portion can be easily seen. [Structure] A cylindrical body having elasticity in a radial direction is fitted into a binding hole of a sheet bundle, and a stopper member having a collar formed on a head of a male screw body is screwed to both ends thereof, and the collar portion is fixed to the binding hole ends. A binding tool for a bundle of paper that is made to abut.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a binding tool for a paper bundle, in which a rod-shaped body is inserted into a binding hole of the paper bundle, and stoppers are attached to both ends of the rod-shaped body protruding from the binding hole.

[0002]

[Prior art]

 Conventionally, Japanese Utility Model Publication No. 43-5704 has been known as a binding tool for binding a plurality of paper bundles punched by a punching machine or the like. More specifically, a flange portion 2 is formed at one end of a synthetic resin insertion main body 1, and a triangular shape having a slope 3'and a locking portion 3 "on the side surface of the insertion main body 1. A fitting tooth 3 having a shape is formed.On the other hand, a protrusion 5'and a taper hole 5 "are formed on the restraining member 4 which is fitted into the insertion main body 1 after the sheet bundle is inserted into the insertion main body 1. Is formed with a fitting hole 5.

Next, the usage method will be described. The insertion main body 1 is inserted into the hole of the sheet bundle punched by the punching machine or the like. Next, the restraint member 4 is inserted into the insertion main body 1 until the restraint member 4 comes into contact with the sheet bundle. In the insertion process, the locking portion 3 ″ of the insertion main body 1 and the protrusion 5 ′ of the restraining member 4 are sequentially inserted while being inserted.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, when a page is bound by the binding tool and then an arbitrary page is opened, the central portion is raised to the left and right, and the characters in the central portion cannot be seen, which is very difficult to see. Met. There is a problem that such a state becomes remarkable as the position approaches the center of the page of the bundle.

[0005]

[Means for Solving the Problems]

 The present invention aims to solve the above-mentioned problems, and a cylindrical body having elasticity in the radial direction is fitted into the binding holes of the sheet bundle, and a stopper member having a collar formed on the head of the male screw body is screwed at both ends thereof. It is characterized in that the collar portion is brought into contact with the end of the binding hole.

[0006]

【Example】

 1 and 2 show a first embodiment of the present invention. Reference numeral 1 is a sheet bundle, and 2 is a binding hole thereof. An elastic tube 3 is inserted into the binding hole 2 and is made of a material such as vinyl, polypropylene, nylon. A stopper 4 is fitted and fixed to both ends of the elastic tube 3, and has a collar portion 4b formed on the head of the male screw body 4a. The outer diameter of the male screw body 4a is slightly larger than the inner diameter of the elastic tube 3.

Next, the usage method will be described. First, the stopper 4 is screwed onto one end of the elastic tube 3. Next, the elastic tube 3 is inserted into the binding hole 2 of the sheet bundle 1, and the stopper 4 is screwed to the other end of the elastic tube 3.

Since the elastic tube 3 has elasticity, even if a female screw is not formed in advance on the inner surface of the elastic tube 3, the stopper 4 is rotated and fitted. A male screw is formed on the inner surface of the elastic tube 3 in the process of fitting.

3 and 4 show a second embodiment of the present invention. The elastic tube 3 of the first embodiment is a coil spring 5. The method of use is almost the same as that of the first embodiment, but since the inner surface of the coil spring 5 has a female screw shape, it is easy to screw the male screw body 4a of the stopper 4 in the direction in which the stopper 4 loosens. As for the coil spring, a force acts on the coil spring in the direction of reducing the diameter, which is effective in preventing loosening. A stretchable elastic film may be attached to the outer circumference of the coil spring 5 so that the bundle of paper is not caught between the coils of the coil spring 5.

[0010]

[Effect of device]

 According to the present invention, a cylindrical body having elasticity in the radial direction is fitted in the binding holes of the sheet bundle, and the both ends of the tubular member are screwed with the stopper member having the flange on the head of the male screw body to bind the flange portion. Since it is made to contact the hole edge, even if the central part of the paper stack is opened, the elastic cylinder bends in the radial direction and the opened page can be placed in a substantially horizontal state, so that the vicinity of the binding part can be easily viewed. be able to .

[Brief description of drawings]

FIG. 1 is a front sectional view of a binding portion according to a first embodiment of the present invention.

2 is an exploded perspective view of the stopper and the elastic tube of FIG. 1. FIG.

FIG. 3 is a front sectional view of a second embodiment of the present invention.

FIG. 4 is a front view of the stopper of FIG.

[Explanation of symbols]

 1 Paper Bundle 2 Binding Hole 3 Elastic Tube 4 Stopper 4a Stopper Male Screw Body 4b Stopper Collar 5 Coil Spring

Claims (1)

[Scope of utility model registration request] 1. A cylindrical body having elasticity in a radial direction is fitted in a binding hole of a sheet bundle, and a stopper member having a collar formed on the head of a male screw body is screwed at both ends thereof, and the collar portion is bound with the binding hole. A binding tool for a bundle of paper that comes into contact with the edges.