JPH0517641U - Self-timer for disposable cameras - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a cheap, convenient, and tripod self-timer with a tripod for a single-use camera. [Structure] The shutter retainer is moved inside the take-up cylinder by a screw mechanism, and a rubber band is used for its power. Ankle and belt toothed gears are used to make the shutter release time automatically. Use three rods or clips on the tripod.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a self-timer for a disposable camera in which a film and a camera are integrated and a tripod thereof.

[0002]

[Prior Art]

 There were conventional self-timers for disposable cameras, but they were not practical because there was no tripod dedicated to disposable cameras. In addition, these self-timers were not cheap enough to be suitable for a single-use camera because they were powered by a mainspring and had a complicated structure.

[0003]

[Problems to be solved by the device]

 To provide a self-timer for a single-use camera that is inexpensive, compact, and simple enough to be disposable.

[0004]

[Means for solving the problem]

 A thread groove is cut inside the take-up cylinder 1, and a shutter retainer 2 having a thread on the outer circumference of the cylinder is inserted. A cavity 3 is formed in the center of the shutter presser 2. A rubber band 8 is wound around the lower half of the take-up cylinder 1, and a belt 6 or a string 7 having irregularities formed on one side is regularly wound around the upper half in the opposite direction to the rubber band 8. When the belt 6 is wound around the winding cylinder 1, the pallet fork 9 is kept in contact with the unevenness of the belt 6, and when the string 7 is wound around, the outer circumference of the upper end of the winding cylinder 1 is used as a gear. , The pallet fork 9 is kept in contact therewith. The rotation prevention column 5 protruding from the case 4 is inserted into the cavity 3 of the shutter retainer 2, and the entire winding cylinder 1 is stored in the case 4. The case 4 is integrated with the frame 10, and a tripod protrusion 11 is provided on a part of the case 4.

[0005]

When the belt handle 12 or the string handle 25 extending outward from the case 4 is pulled, the winding cylinder 1 rotates. At this time, at the same time when the rubber band 8 is wound, the rotation preventing support 5 stops the rotation of the shutter retainer 2, so that the shutter retainer 2 rises by the action of the screw. When the belt 6 or the cord 7 extends to some extent, the cutout portion 13 of the belt 6 or the clasp 14 of the cord 7 is caught by the stoppers 15 and 18, and the shutter presser 2 is fixed in the winding cylinder 1. In this state, the lower end of the shutter retainer 2 is aligned with the shutter position of the camera 16, and the frame 10 is fixed to the camera 16 and the tripod is attached. After setting the camera 16 toward the subject, press the stopper buttons 17 and 19. Then, due to the elasticity of the rubber band 8, the take-up cylinder 1 is rotated and the shutter presser 2 is lowered. At this time, the rotation of the take-up cylinder 1 is delayed by the action of the pallet fork 9, and the lower end of the shutter retainer 2 releases the shutter of the camera 16 after a certain amount of time.

[0006]

【Example】

 Example 1 Example 1 will be described based on FIGS. 1 to 6 and 8 to 9. The winding cylinder 1 has a diameter of about 3 cm and is made by injection molding using a synthetic resin having a height of about 2.5 cm. The belt 6 is wound on the upper stage and the rubber band 8 is wound on the lower stage in opposite directions. The belt 6 has a width of about 5 mm, and teeth are regularly arranged on one surface. One end of the belt 6 is fixed to the winding cylinder 1, and a belt handle 12 is attached to the other end. A notch 13 for hooking on the stopper 15 is provided midway. Since the belt 6 is wound around the take-up cylinder 1, it is made of a relatively flexible synthetic resin. A screw groove is spirally cut on the inner wall of the take-up cylinder 1, and a shutter retainer 2 provided with a thread matching the screw groove on the outer periphery is inserted therein. The length of the shutter presser 2 is set to be approximately the same as the height of the take-up cylinder 1, and in the center thereof, a square 3 with a side of about 5 mm and a depth of about 20 mm is provided. Make sure that the rotation prevention brace 5 of can be put in and taken out. The case 4 is configured such that the winding cylinder 1 is rotated, and a hole through which the shutter presser 2 comes in and out is provided below the case 4. Further, a groove through which the belt 6 passes is provided, and the pallet fork 9 and the stopper 15 are also attached in the middle thereof. The pallet fork 9 is for preventing the movement of the belt 5 to some extent, and is attached to the case 4 so as to be slightly rotated by the shaft 20 and mesh with the teeth of the belt 6. The stopper 15 is integrally made of a material such as a synthetic resin, and the elasticity of the material allows the stopper 15 to be in slight contact with the lower side of the belt 6 so that the movement of the belt 6 can be temporarily stopped when the notch 13 of the belt 6 is engaged. Stop it. The stopper button 17 for releasing this is connected to the upper part of the case 4. To use the present invention, first insert the leg rod 22 or the insertion portion 24 of the clip 23 into the hole of the tripod ball 21, and then insert the tripod ball 21 into the tripod projection 11 on the lower side of the frame 10. Assemble the tripod. Next, the belt handle 12 is pulled to raise the shutter presser 2, and the stopper 15 suspends the rotation of the winding cylinder 1 for a moment. Next, the frame 16 is used to set the camera 16 as shown in FIG. At this time, the lower end of the shutter presser 2 is made to coincide with the position of the shutter of the camera 16. In this state, set the camera toward the subject and finally push the stopper button 17.

Second Embodiment A second embodiment will be described with reference to FIG. The string 7 may be used instead of the belt 6. In this case, the circumference of the upper end of the winding cylinder 1 is used as a gear so that the gear and the pallet fork 9 mesh with each other. A clasp 14 for hooking on a stopper 18 is attached in the middle of the string 7. Others are the same as in the first embodiment.

[0008]

[Effect of the device]

 Since the present invention has a simple structure and the material is a synthetic resin such as plastic and rubber band or a string, it can be manufactured at low cost. Also, since the mechanism is simple, the operation is easy and there are few failures. Since the action of the screw is used in the movement, even a small elasticity of the rubber band can generate enough force to push the shutter. Since the tripod can be connected with a rod or a clip as a leg, it is easy to use and the camera can be easily set at any place.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment.

FIG. 2 is a partial cross-sectional view of a winding cylinder.

FIG. 3 is a partial sectional view of a shutter retainer.

FIG. 4 is a partial sectional view.

FIG. 5 is a partial sectional view

FIG. 6 is a partial sectional view.

FIG. 7 is an exploded perspective view showing a second embodiment.

FIG. 8 is an explanatory diagram showing a usage state.

FIG. 9 is a perspective view.

[Explanation of symbols]

 1 Winding cylinder 2 Shutter presser 3 Cavity 4 Case 5 Anti-rotation prop 6 Belt 7 String 8 Rubber band 9 Ankle 10 Frame 11 Tripod protrusion 12 Belt handle 13 Notch 14 Clasp 15 Stopper 16 Camera 17 Stopper button 18 Stopper button 18 Stopper button 20 axis 21 tripod ball 22 rod 23 clip 24 insertion part 25 string handle

Claims (1)

[Scope of utility model registration request] 1. A spirally threaded groove is formed on the inside of a take-up cylinder 1, and a cylindrical shutter retainer 2 having a screw thread matching the threaded groove is inserted. A cavity 3 is formed at the center of the shutter retainer 2, and a rotation preventing support column 5 protruding from the case 4 is inserted therein. These are stored in the case 4. The case 4 is connected to a frame 10 provided with a tripod projection 11. A self-timer for a disposable camera having the above structure.