JPS5895335A - Lighting device of copying machine or the like - Google Patents

Abstract

PURPOSE:To adjust an illumination intensity distribution easily and stably, by providing a stopper which is capable of fixing an elastic member provided with a socket terminal in multistages to an adjusting displacement position. CONSTITUTION:When adjusting an illumination intensity distribution, a plate spring 1 is rocked in the opposite direction through a connecting pin 3 when a lever 5 is rocked in the prescribed direction by a holding part 6, in a state that a linear halogen lamp is supported by a socket terminal 2 (only one socket member is shown in figure) in both its end parts, and when a detaining piece of the lever 5 is fitted and fixed to a prescribed detaining groove of a stopper 7 in a place where a desired illumination intensity distribution is obtained, said adjustment is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a socket for a lighting device in a copying machine, a printer, etc.

In lighting devices such as copiers that use reflectors and are equipped with linear halogen lamps, the illuminance distribution varies greatly due to the positional movement of the socket contact. , it was common for it to take time to adjust the illuminance distribution.

Therefore, when the lamp is replaced due to a burnout of the lamp, a large amount of time is required to obtain copies without uneven density.

As a conventional position adjustment mechanism for a linear halogen lamp socket, for example, as shown in FIG.
A socket contact 05 and a plate spring 04 having a position adjustment elongated hole are inserted into the sliding hole 02 of the fixed member 01, and the elongated hole 03 of the fixed member 01 and the position adjustment elongated hole of the plate spring 04 are inserted. After adjusting the positional relationship of
L is a linear halogen lamp), and as shown in FIG. A member that adjusts the displacement of the leaf spring 04 by rotating the threaded screw 07 in contact with a stopper (not shown), or a member that fixes the leaf spring with a socket contact 05 as shown in FIG. After making the plate spring 04 swingable and rotatable around the fulcrum shaft 01a of the Ol, and rotationally displacing the plate spring 04 at a predetermined angle, the plate spring 04 is fixed by the screw member 06 in the long hole 03 part.
There is one that is configured to fix 4.

Each of the above-mentioned adjustment mechanisms is difficult to fine-tune.1 Furthermore, the fixing device lacks reproducibility, and the position adjustment is unstable unless a special jig is used.

The present invention has been made to address such problems, and its purpose is to provide a lighting device for a copying machine or the like that has a socket that allows easy adjustment of the illuminance distribution.

That is, the present invention makes it possible to fix an elastic member with a socket terminal in a multi-stage adjustable displacement position in a lighting device such as a copying machine having a socket whose relative positional relationship with a light source and a lefter can be adjusted. It is equipped with a stopper, and the above configuration makes it possible to easily and stably adjust the illuminance distribution.

The present invention will be explained below based on an embodiment shown in FIG.

A lever 5 is rotatably connected to the leaf spring 1 having a socket terminal 2 via a connecting pin 3.
is capable of swinging and rotating around a fulcrum pin 4 fixed to the copying machine main body, and engages with a locking groove of a stopper 7 having a large number of locking grooves fixed to the copying machine main body. An engagement piece (not shown) is provided to protrude from the lever 5.

Moreover, the distance between the stopper 7 and the fulcrum pin 4 [LI,
The ratio 1/2 of the distance L2 between the fulcrum pin 4 and the connecting pin 3 is set as large as possible.

The above embodiment is constructed as described above, and when adjusting the illuminance distribution, the linear halogen lamp is connected to the socket terminals 2 at both ends (only one socket member is shown in FIG. 4). If the lever 5 is swung in a predetermined direction by the grip 6 while supported by the leaf spring 1
is swung in the opposite direction via the connecting pin 3, and when the desired illuminance distribution is obtained, the engagement piece 1F0 of the lever 5 is engaged and fixed in a predetermined engagement groove of the stopper 7.

The amount of displacement of the leaf spring 1 is small compared to the amount of oscillation of the engagement f and one side of the lever 5, and fine adjustments can be easily made.

Further, since the fixing of the lever 5 by the stopper 7 is reliably carried out step by step by the locking groove, it is possible to easily reproduce the lamp position before adjustment. Therefore, lamp replacement and associated illuminance distribution adjustment (by adjusting the relative positional relationship between the reflector and the lamp) can be performed in a short time.

Next, another example having substantially the same structure as the above example will be described as a fifth example.
This will be explained according to the diagram.

The structure in which a leaf spring 1 having a socket terminal 2 is operated and displaced by a lever 5 rotatably supported by a fulcrum pin 4 is the same as the embodiment shown in FIG. The connection direction of the lever 5 with respect to the spring 1 is different, and in this embodiment, the bracket protruding from the leaf spring 1 is
In the section, the lever 5 and the leaf spring 1 are connected,
Furthermore, the grip portion 6 of the lever 5 and the stopper 7 are arranged outside the base frame 8.

The embodiment shown in FIG. 5 is constructed as described above, and since the operating grip 6 of the lever 5 is protruded from the outside of the copying machine, the lamp position can be adjusted (illuminance distribution adjustment) from the outside. ) can be done, predeceased! Adjustment is clear and easy.

In each of the embodiments described above, the lever 5 to which the leaf spring 1 is connected is
However, as shown in FIG. 6 or FIG. (in FIG. 3, the socket terminal 2 is located closer to the stopper 7, and in FIG. 7, the socket terminal 2 is sandwiched between the socket terminals 2 and is located on the opposite side from the stopper 7). It can produce the same effect.

Although the present invention has been described above in detail with reference to the embodiments shown in the drawings, the present invention is not limited to these embodiments, and can be freely modified as necessary without departing from the spirit of the invention. The design can be modified.

[Brief explanation of the drawing]

1 to 3 are explanatory diagrams showing a conventionally known socket position adjustment mechanism, FIG. 4 is a schematic explanatory diagram of a socket position adjustment mechanism according to an embodiment of the present invention, and FIG. 5 is an explanatory diagram showing a socket position adjustment mechanism according to another embodiment of the present invention. A schematic explanatory diagram of the mechanism, FIG. 6, and FIG. 7 are schematic explanatory diagrams of the mechanism as further embodiments, respectively. 1... Leaf spring, 1a... Bracket, 2... Socket terminal, 3... Connecting pin, 4... Fulcrum pin, 5...
・Lever, 6...Gripper, 7...Stopper, 8.
...Base frame, L...Linear halogen lamp. Agent Patent attorney Nozomi Ehara 1 person 7- Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] In an illumination device such as a copying machine having a socket in which the relative positional relationship between the light source and the reflecting mirror can be adjusted, the elastic member with a socket terminal is provided with a stopper capable of fixing the elastic member with a socket terminal at adjustable displacement positions in multiple stages. Characteristic lighting equipment for copying machines, etc.