JPH028276Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a cartridge reel, which has been improved so that the film can be easily hung and a stable hanging state can be maintained.

[Conventional technology]

The reel used as a film reel is designed in various ways to hang the leading edge of the film.For example, a reel is provided with a slot in the body, and the leading edge of the film inserted through the slot is hooked onto the reel. The reel, which can be stopped freely, has two locking protrusions inside the body facing the insertion port, and the locking holes drilled at the tip of the film are inserted into these locking protrusions, and the reel is latched. A restraining protrusion provided opposite to the film prevents the film from becoming unlatched.

[Problem that the idea aims to solve]

In a reel with the above configuration, two locking holes must be provided at the tip of the film that has been trimmed into a convex shape, and when hooking the film, the tip of the film must be held so that it does not hit the holding protrusion. A cumbersome operation is required, such as inserting the part while curving it and fitting the locking hole into the locking protrusion. Therefore, the present invention utilizes the elasticity of the tip of the film folded in half, and when this tip is inserted into the insertion slot, the tip immediately springs back, and the shoulder formed inside the insertion opening. For cartridges that have been improved so that anyone can easily and quickly hang the film using a so-called one-touch operation, in which the leading edge of the film can be locked and hung, while at the same time providing sufficient stability after hanging. The purpose is to provide reels.

[Means to solve the problem]

In order to achieve the above object, the cartridge reel which is a feature of the present invention has a body part on which a film can be wound freely, and the cartridge reel is provided with a film insertion port in the body part. The distal end of the film is opened so that it can be inserted with the film folded in half, and the cavity connected to this insertion opening has either the upper or lower cavity wall surface slanting downward toward the back of the other cavity wall surface. A shoulder is formed on the inside of the boundary between the cavity wall surface, which is a sloped surface, and the insertion port, and is capable of locking the tip edge piece of the folded end portion of the film inserted into the cavity through the insertion port. It is made up of the following.

[Effect]

When the folded tip of the film is inserted into the cavity through the insertion port, when the insertion is complete, the edge of the tip of the film is locked to the shoulder inside the insertion port due to the elasticity of the tip itself. Then, the film is fully latched. Once it is hooked, the section of the film housed in the cavity has an apparent triangular cross-sectional shape with the bent part as the apex, and the hypotenuse part is elastic against the wall surface of the cavity. The latching condition is stabilized by the crimping and the latching action of the shoulder on the edge of the tip. Therefore, there is no need to worry about the latch coming off even if the film is pulled unduly.

【Example】

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In a cartridge reel, which is equipped with a body 1 on which a film a can be freely wound, and an insertion port 2 is provided in the body 1, a cavity 3 connected to the insertion port 2 has a cavity wall surface 4 on either the upper or lower side. The cavity wall surface 4 and the insertion port 2 are formed into an inclined surface that slopes down toward the inner part with respect to the other cavity wall surface 5.
The present invention is implemented by providing a stepped shoulder 6 on the inner side of the boundary between the reel and the reel so that the leading edge c of the leading end portion b of the film a folded in half can be secured to the shoulder 6. The insertion port 2 is opened so that the leading end side of the film a can be inserted in a state in which the film a is folded in half with the film a perpendicular to the longitudinal direction. The length of one side of the cavity wall surface 4 in the inclined direction (the length from the shoulder 6 to the tip) is approximately equal to the bending length of the tip portion b of the film a. . In addition, the tip part b of the film a
is formed by folding a convexly trimmed portion in half. In the figure, 1a is a flange.

[Effect of the idea]

The present invention is as described above, and the reel is constructed in such a way that latching can be accomplished immediately by simply inserting the folded end of the film into the cavity through the insertion opening, which is different from conventional reels of this type. Unlike the conventional method, there is no need to make a hole at the leading end of the film, and the latching operation is completely hassle-free and has the advantage of being easy for anyone to perform. The latching is determined by the latching of the leading edge of the film against the shoulder and the crimping effect of the elasticity of the film itself, so there is no fear of it coming off. Furthermore, the reel of the present invention is effective in achieving more rational automation of the film hanging operation, and its practical value is extremely large.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view showing the film before winding, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 shows the film in a latched state. FIG. 2 is a cross-sectional view similar to FIG. In the figure, 1 is the body, 2 is the insertion port, 3 is the cavity,
4 and 5 are cavity wall surfaces, 6 is a shoulder, a is a film, b is a tip portion, and c is a tip edge.

Claims (1)

[Scope of utility model registration request] A cartridge reel is provided with a body portion around which a film can be freely wound, and a film insertion port is provided in the body portion, the insertion port being open so that the film can be inserted with the leading end side folded in half; The cavity connected to this insertion port is formed into an inclined surface where either the upper or lower cavity wall surface slopes downward toward the inner part of the other cavity wall surface, and the cavity wall surface that is the sloped surface and the insertion port are formed as slopes. A cartridge reel characterized in that the inside of the boundary part is provided with a shoulder part capable of locking the leading edge piece of the folded end part of the film inserted into the cavity through the insertion opening.