JPH0621040U - Photographic roll film cartridge - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The purpose of the present invention is to clarify an improved cartridge that enables easy assembly of each member. The present invention relates to a photographic roll film cartridge having a spool shaft 12 structure including a spool shaft 12, a pair of hubs 13 and a pair of flanges 15, and both ends of the spool shaft 12 and the hub 13. An engaging leg portion 17 or an engaging hole 18 into which the leg portion 17 is inserted is provided at each of the ends of the spool 17 and the leg portion 17 is fitted into the engaging hole 18 so that the spool shaft 12 This is a photographic roll film cartridge characterized in that the hubs 13 are integrated at both ends.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a cartridge used for storing a photographic roll film in a light-shielded state.

[0002]

[Background of device]

 The 35 mm roll film that is widely used at present is a long film that is housed in a light-shielding container called a Patrone and has continuous through holes called perforations on both sides. The base end is fixed and wound around a spool shaft in the cartridge, and the lead portion is drawn out to the outside through a slit in which a light-shielding fiber material called a so-called teremp is arranged.

Although the above-mentioned patrone is made of metal, there are problems in manufacturing cost, camera mounting problem, miniaturization problem, reuse problem, and the like. For example, US Pat. 33 4, No. 5,025, 274, No. 5,031, 852, JP-A 1-231045, No. 3-214153, No. 4-4116, No. 4-67034, No. 4- As described in JP-A-141656, JP-A-4-134448 and the like, various kinds of synthetic resin cartridges or cartridges (herein referred to as cartridges) have been proposed.

[0004]

[Problems to be solved by the device]

 Among the cartridges described in the above publications, in the conventional metal cartridge, even the leader part that is drawn out of the slit that is the entrance and exit of the film is also drawn into the light-shielding container. There is a type in which the film is pushed out of the container from the tip side according to the rotation of the spool shaft by the rotation operation and is engaged with the film winding mechanism on the camera side. In this type of cartridge, the film wound in the cartridge is prevented from coming loose and coming into contact with the inner wall of the container, which prevents the film from being pushed out even if the spool shaft is rotated. For this reason, a pair of flexible flanges made of a thin synthetic resin material is attached to the spool shaft as a member for pressing both ends of the wound film.

Since the above-mentioned flanges made of different materials are required, like the spool shaft in the conventional cartridge, a single integral molding including a winding shaft portion, a guide collar portion, a hub portion, and a hub portion is formed. Since it was not possible to mold and resin mold it, it was necessary to separately mold and assemble the spool shaft, a pair of flanges, hubs and hubs.

Therefore, in the automatic assembly process, supply, holding, and assembling of each member become very complicated, resulting in a great decrease in production efficiency, leading to an increase in production cost.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an improved cartridge capable of easily assembling each member.

[0008]

[Means for Solving the Problems]

 A photographic roll film cartridge according to the present invention that achieves the above-mentioned object is a photographic roll film cartridge having a spool shaft structure including a spool shaft, a pair of hubs and a pair of flanges. A leg portion for engagement or an engagement hole into which the leg portion is inserted is provided in each of the both end portions and the end portion of the hub, and the leg portion is fitted into the engagement hole, whereby the spool shaft The hub is integrated at both ends.

[0009]

[Specific configuration of device]

 Next, the present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 shows an example of a roll film cartridge to which the present invention is applied. The cartridge body is made of synthetic resin and is composed of an upper part 10 and a lower part 11 which are divided into two parts. The joint portions of the parts are welded by, for example, an ultrasonic welding method to be integrated in a light-shielded state. Inside the united cartridge body, the film winding structure formed by the spool shaft 12, the hub 13, the hub 14, and the flange 15, and the roll film 16 wound in this film winding structure are shielded from light. It is stored.

Now, in the cartridge according to the present invention, in order to facilitate the assembling work, it is devised to attach the bases of the hub 13 and the hub 14 to both ends of the spool shaft 12. That is, as shown in FIGS. 2 and 3, the hub 13 has a pair of legs 17 having hooks for engagement formed at the base thereof, while the end of the spool shaft 12 is provided. Is provided with an engaging hole 18, and when the leg portion 17 of the hub 13 is press-fitted, the hook at the tip of the leg portion 17 engages with the stepped portion of the engaging hole 18 and does not fall off. .

The engagement hole 18 is not a simple cylindrical cavity, but a notch portion into which the leg portion 17 is inserted is formed as shown in FIG. 2, and the rotational force of the hub 13 is applied to the spool shaft 12. It is designed to be communicated. The number of legs 17 is two in the illustrated mode, but may be three or four and the like.

Further, a ratchet-like projection 20 that engages with the rotation control hole 19 of the flange 16 and rotates the flange 16 in only one direction is arranged at the base of the hub 13. Although the hub 13 has been described above, the hub 14 can be assembled with the same structure. The configuration described above may be a mode in which the elements are reversed, that is, the leg portions 17 are provided at both ends of the spool shaft 12 and the engagement holes 18 are provided at the hub 13 side.

[0013]

[Effect of device]

 According to the present invention, the leg portions 17 of the hub 13 or the hub 14 can be easily combined by simply pushing them into the engaging holes 18 of the spool shaft 12, no adhesive is required, and welding by heat or vibration is possible. No device is required, the assembly process can be simplified, and the above-mentioned problems can be solved.

[Brief description of drawings]

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

FIG. 2 is a perspective view of the same main part.

FIG. 3 is a sectional view of the same main part.

[Explanation of symbols]

 10-cartridge upper part 11-cartridge lower part 12-spool shaft 13-hub 14-hub 15-flange 16-roll film 17-leg 18-engagement hole 19-rotation control opening

Claims (1)

[Scope of utility model registration request] 1. A cartridge for a photographic roll film having a spool shaft structure composed of a spool shaft, a pair of hubs and a pair of flanges, for engaging with both ends of the spool shaft and ends of the hub. Or the engaging hole into which the leg is inserted is provided, and the hub is united to both ends of the spool shaft by fitting the leg into the engaging hole. A roll film cartridge for photography.