JPS623230Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a flash valve switch for a thermal stencil printing device, and its purpose is to prevent the lamp house, which is designed to move up and down relative to the base to perform plate making, from tilting. The purpose is to turn on electricity and light up the flash valve only when it is pressed to the final position, to ensure that plate making is performed reliably.
The aim is to provide such a device at a low cost.

Next, an embodiment of the present invention shown in the accompanying drawings will be described in detail. 1 is a base on which an elastic plate 2 such as a flat rectangular sponge is fixed, and both side walls 1a
A guide groove consisting of a vertical groove 1b and a horizontal groove 1c facing outward from the middle on the inner surface of one end, and a diagonal groove facing inward and obliquely upward facing the same vertical grooves 1b, lateral grooves 1c, and lateral grooves 1c on the inner surface of the other end. A guide groove of 1d is formed. 3 is a lamp house with a transparent press plate 4 on the bottom surface
is fixed thereto, and a paper frame support member 5 for fixing the heat-sensitive stencil paper is attached to its outer periphery. At the lower four corners of the lamp house 3 are shaft pins 6 made of conductive material.
is pivoted and protruded, its tip is fitted into the vertical groove 1b, a square lever 7 is fixed in the middle of the protrusion, a pin 8 is provided at the inner tip, and a pin 9 is provided horizontally on the outer tip, A pin 9 is fitted into the horizontal groove 1c. A press cover 10 is attached to the upper part of the lamp house 3, and legs 10a projecting downward from the four corners thereof are placed on pins 8, respectively. The inside of both side walls 1a of the base 1 is hollow, and a conductive movable leaf spring 11 is disposed on one side, and conductive movable leaf springs 12 and 13, which are divided into two, are disposed on the other side. It protrudes into the vertical groove 1b, and the tip of an electrically conductive shaft pin 6 is placed thereon. Each movable leaf spring 11, 12, 13 is supported by a spring 14, and each movable leaf spring 11, 12, 13
Bent contact plates 15a and 16a are positioned below the outer ends of the plate springs 15 and 16 to face each other, and a battery 17 is fitted in series to one of the plate springs 15. Socket insertion openings 3a are formed in both side walls of the lamp house 3 and are large enough to allow the flash bulb 18 to enter and exit, and the socket 19 is inserted into the socket 19 by holding the grip 19a in one's hand. The shaft pin 6 placed on the movable leaf springs 12 and 13 is connected to one socket 19 by the current-carrying plate 20.
The other socket 19 is connected to a current-carrying plate 20 via a current-carrying plate 21. The switches S ₁ , S ₂ , S ₃ , S ₄ constituted by movable leaf springs 11, 12, 13 and leaf springs 15, 16, the flash valve 18, and the battery 17 are shown in FIGS. 7 and 8. are connected in series. Next, the effect will be explained.

When the press cover 10 with the lamp house 3 attached is lifted upward, the pin 9 is inserted into the vertical groove 1b as shown in FIG.
The lamp house 3 can be removed from the base 1 by lifting it further upwards. In this way, the lamp house 3 is removed, the heat-sensitive stencil paper 22 is fixed to the base paper frame support member 5 on the lower surface, the original 23 is placed on the elastic plate 2 of the base 1, and the pin 9 of the lamp house 3 and the shaft are fixed. Pressing cover 1 with pin 6 inserted into vertical groove 1b and lamp house 3 attached
Due to its own weight of 0, the pin 9 enters the vertical groove 1c as shown in Fig. 13, No. 10. In this state, press cover 10
When the lever 7 is pushed downward, the lever 7 is moved to the pin 9 as shown in Fig. 11.
The pressing plate 4 is rotated as shown by the arrow about the fulcrum, and the pressing plate 4 is pushed downward by the shaft pin 6. Since the shaft pin 6 is closer to the pin 9, which is the fulcrum, than the pin 8, which is the point of action, it is pushed with a force that is sufficiently larger than the force that pushes the pressing cover 7 due to the lever principle. When the pressing plate 4 presses the document 23 and reaches the final position as shown in FIG.
1, 12, and 13 are pressed against the leaf springs 15 and 16 against the elasticity of the spring 14, and the switches S ₁ , S ₂ , S ₃ , and S ₄ shown in FIGS. 7 and 8 are closed. The machine is energized, lights up, and platemaking begins.

When printing next time, as described above, lift the press cover 10 covering the lamp house 3 upward and remove it, remove the plate-made heat-sensitive stencil paper 22 from the base paper frame support member 5 on the bottom surface of the lamp house 3, and apply ink. Then, attach it to the base paper frame support member 5 again, and then attach it to the base 1.
A printing paper is placed on the elastic plate 2, and the press cover 10 with the lamp house 3 covered thereon is attached to the base and pressed to perform printing.

When the lamp house 3 is rotated upward around the shaft pin 6 on the side with the diagonal groove 1d as shown in Fig. 4 without removing it from the base 1, the pin 9 fits into the diagonal groove 1d and rotates vertically upward. Since the heat-sensitive stencil paper 22 can be rotated in this state, the heat-sensitive stencil paper 22 may be attached or detached.

In addition, the lamp house 3 is lifted upward and removed as described above, and the heat-sensitive stencil paper 2 is printed on the bottom surface of the lamp house 3.
It is also possible to attach the stamp 2 with ink applied to it and press it onto various objects as a stamp to print.

According to this invention, when the lamp house is pushed downward, the movable leaf springs are pressed against the four contact plates at the four corners of the lamp house to energize the flash bulb, so the lamp house tilts and descends, causing heat-sensitive If the stencil paper is not pressed evenly and correctly over the entire surface of the document on the sponge board, the flash valve will not operate and no plate-making will be performed, so that correct plate-making can always be performed.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of an embodiment of the present invention, Fig. 2 is a partial perspective view of the front side pressing part of Fig. 1, and Fig. 3 is a perspective view of the rear side pressing part of Fig. 1. figure,
Figure 4 is a side view of the main part of Figure 3, Figure 5 is a front sectional view of the lamp house and base, Figure 6 is a perspective explanatory view of the electric circuit, and Figures 7 and 8 are electrical circuit diagrams. , No. 9
The figure is a side view of the main part before pressing, and FIGS. 10 to 13 are explanatory views of the operation after pressing. DESCRIPTION OF SYMBOLS 1... Base, 2... Elastic plate, 3... Lamp house, 4... Pressing plate, 11, 12, 13... Movable leaf spring, 14... Spring, 15, 16... Leaf spring, 15a, 16a... Contact plate, 18... Flash valve, 19... Socket, S ₁ , S ₂ , S ₃ , S ₄
...Switch.

Claims (1)

[Scope of utility model registration request] A conductive leaf spring is fixed to one side of the base, both ends of which are bent upward to serve as a contact plate, and a conductive movable leaf spring divided into two parts is attached to the other side. A lamp house supported so as to be movable up and down by springs so that the four contact plates and the ends of each movable leaf spring are always separated from each other, and which can be moved up and down, is placed on the movable leaf spring, and the four contacts are placed on the movable leaf spring. A flash valve switch for a thermal stencil printing device that is wired so that the flash valve is energized when four switches made up of plates and movable leaf springs are closed.