JPS5825662A - Supporting device for light source for illumination of original incorporating electric connecting piece - Google Patents

Abstract

PURPOSE:To provide simplification of wiring, safety, reliability, etc. without using any cord by constituting a supporting body for a light source for illumination of originals such as carriage of an insulating resin material and embedding electric connecting pieces therein except their terminal parts. CONSTITUTION:The figure shows a bracket part 18 of a carriage which is an embodiment of a supporting body for a light source, which part is formed of an insulating resin material, for example, a thermosetting resin such as unsaturated polyester. An electric connecting piece 19 is embedded except both terminals 19a, 19b in the part 18 in one body, in the molding stage for the bracket. The piece 19 consists of conductive metallic materials such as brass or phosphor bronze and since the bracket covering the pieces consists of the insulating resin, the electric connecting piece is completely electrically isolated from the bracket. Similarly, an another electric connecting piece 20 having exposed terminals 20a, 20b is embedded in the part 18.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a document illumination light source support device having a built-in electrical connection piece.

In a set document type copying machine, illumination scanning of a document is performed by illuminating the surface of the document in a slit shape with a document illumination lamp and moving the light from one end of the document toward the other end. In some types of copying machines, the document illumination lamp is mounted on a carriage together with a scanning mirror, and the document illumination and scanning is performed by the reciprocation of this carriage. Conventionally, the method for connecting the electric wire cord from the power source to the document illumination lamp via the carriage has been to provide slack in the electric wire cord from the power source to the carriage to allow movement of the carriage, and to The electric wire cord leading to the lamp was placed along a predetermined location on the carriage, and in this state, the cord terminal was connected to the lamp.

In this conventional method, the cords are wired in a carriage [i], so it is necessary to use something that can withstand the heat generated from the light source. The cord becomes loose, and this part gets caught on the protrusions of the copier when the carriage moves.
This may interfere with the reciprocating movement of the carriage, or
This may damage the cord, and in some cases, it may break and cause accidents such as short circuits. In recent years, there has been a demand for more compact copying machines, etc., and each piece of equipment has become extremely crowded, and the space between the carriage and other equipment parts has become extremely narrow, making code In order to deal with this problem, if a rigid electric wire cord is used, or if a polyethylene 4JF wire or the like is used to ensure heat resistance, the loose part of the cord will easily catch on various protrusions. @
j1, it has the disadvantage that the equipment cost is higher.

Furthermore, when a carriage made of light alloy casting or bent sheet metal is used, these edges can easily damage the electric wire cord. In addition, the method of running the cord along the carriage rC not only requires a large number of fasteners, but also requires maintaining a certain amount of insulation distance between the terminal and the metal carriage. When using a capacitor with a large capacity, sufficient consideration must be given to the voltage resistance between the terminal and the metal carriage.

The present invention provides an original IK light source support such as a carriage made of an insulating resin material, and an electrical connection piece is embedded therein except for the terminal portion, which can eliminate the conventional drawbacks. An object of the present invention is to provide an illumination light source support device.

The present invention will be explained below with reference to illustrated embodiments.

Figure 1 shows the optical system of a copying machine, which is an application example of the device of the present invention, and below the contact glass 1 on which the original O is placed, there is a halogen lamp or the like, which is an example of a light source for illuminating the original. A scanning optical system consisting of an illumination lamp 2, a reflector 3, and a mirror 4 is provided, and these are mounted on a carriage 5, which will be described below. Carriage 5 and mirror 4
The mirror 6 provided in the optical path of reflection from the mirror 6 moves in the direction of the arrow at a speed ratio of 2:1.During this movement, scanning of the document is performed, and during this scanning, the mirror 6 The reflected light is applied to the surface of the photoreceptor as imaging light via a mirror, an imaging lens, etc. (not shown), and an electrostatic latent image is formed on the surface of the photoreceptor.

FIG. 2 shows an example of a conventional carriage used for comparison with the apparatus of the present invention, and this carriage 5 is movable in the document scanning direction indicated by the arrow by a guide IIIIII7. The gear ridge 5 is equipped with an illumination lamp 2, a reflector plate 3, etc. whose terminals are connected by terminal members 8 and 9 at both ends, and one terminal member 9 is connected to the lamp 2 by a torsion coil spring 110.
It can be attached and detached by rotating it around the pivot 12 against elasticity. In this way, the carriage 5 constitutes an example of a document opening light source supporting device.

Now, as a conventional cord wiring method, coil spring 13
A flat cord 14 connected to a power source is inserted through the inside.
In addition, the two cords are passed through the lower part of the carriage as shown by broken lines, and further, one cord 14a is connected to the terminal member 8, and the other cord 14b is connected to the terminal member 8 through the military victory guide 15. Each terminal is connected to the relay terminal 16. In addition, relay terminal 16
and the terminal 9 member are electrically connected, and the cord 14b is connected to the lamp 2 via both terminals.

5- In this way, power is supplied to the lamp from the power supply, but in the conventional wiring method in which the cord runs along the carriage, as described in the first section, It has its drawbacks.

(1) It is necessary to make the electric wire, so to speak, the cord heat resistant.

(Illusion) Heat-resistant wires have a large current capacity, making them rigid1, making wiring difficult.

(3) Many fasteners (code 17) are required during wiring;
Furthermore, heat resistance is required for the fastener.

(4) The edges of the carriage can easily damage the cord.

(5) Since the carriage moves, the cord must be securely fixed. If the cord is slack, especially at the bottom of the carriage, it will easily get caught on other protrusions, and if the cord is damaged, it may cause a short circuit accident. There is a risk of this happening.

(6) If the cord becomes loose, the optical path for exposure will be
− There is a risk that it may be interrupted.

(7) When attaching the terminal (number 8, 1.6) to the carriage body, it is necessary to use an insulating member.

According to the present invention, it is possible to reduce all the defects of the upper period by 4/1. Figures 1 and 3 show the bracket part 18 of the carriage, which is an example of a light source support, and is made of an insulating resin material, for example, a thermosetting resin such as Japanese polyester. It has become.

There are two terminals 19a and 19b inside the bracket part 18.
An electrical connection piece 19 is buried except for the electrical connection piece 19, which is integrally formed when the bracket is molded [-1rl! It gets indented and swollen. The electrical connection piece 19 is made of a conductive metal material such as brass or phosphor bronze, and the bracket is made of insulated resin, so the electrical connection piece and the bracket are completely electrically isolated. . Similarly, within the bracket capital 18 is another terminal 20a.

An electrical connection piece 20 having a diameter 20b is buried therein. Note that the electrical connection piece can be modified in various ways depending on the shape of the bracket portion.

Figures 1 and 4 show that the reflector 3 is attached to the bracket part 18 in Figure 3.
4a, both cords are connected to a power source and passed through a coil spring 13.

1.4. b, terminals are connected to exposed terminals 1.9a and 20a, respectively. That is, the terminals 19a, 20
A becomes a terminal connected to the power supply side.

On the other hand, the lamp terminal 21 is connected to the other terminal 19bK of the electrical connection piece 19;
Relay terminal 22 on the opposite side, electrical connection piece 20
is connected to the other terminal 20b. That is, both terminals], 9
b and 20b are terminals connected to the light source side terminals (numerals 21 and 22). In addition, relay terminal 22
and the terminal member 9 are electrically connected. In this way, power is supplied to the lamp 2 through the electrical connection piece and each terminal embedded in the electrical conduction path within the bracket portion 18, so to speak.

As described above, according to the present invention, since no cord is used for wiring in the light source support, there is no need for a cord having heat resistance E1-, no need for a large number of cord fasteners, The cord shall not be damaged by the edges of the light source support such as the carriage, the cord shall not be caught on other protrusions due to loosening, there is no risk of blocking the optical path due to the slack, and the support shall be insulated. It is made of a flexible resin material, so there is no need to consider insulation 41 for the support of the terminal part, and when a light source with a large current capacity, such as a halogen lamp, is used, there is no need to consider insulation, pressure resistance, etc. This has various effects such as eliminating the need to pay. In this way, the present invention improves wiring simplification, safety,
This is because reliability can be improved. Note that various light sources can be used, such as halogen lamps and fluorescent lamps, and the present invention is applicable not only to copying machines but also to document illumination devices such as facsimile machines, and equipment equipped with this type of device. It can be applied to

[Brief explanation of the drawing]

Figure 1 is a schematic configuration diagram of the optical system of a copying machine which is an example of application of the present invention, Figures O and 2 are perspective views of an example of a conventional device.
Figure 3 is a perspective view of the bracket part of the optical system carriage of an apparatus according to an embodiment of the present invention, and Figures 2 and 4 are perspective views of the entire carriage in which a reflector, a terminal, etc. are assembled to the bracket part. 2... Illumination lamp as a light source, 18... Bracket portion of gear ridge as a light source support, 19.20...
- Electrical connection piece, 19a, 20a...Power supply side terminal, 19b. 20b...Terminal connected to the light source side terminal, 21.22
...Terminal 10- as a light source side terminal

Claims (1)

[Claims] a light source for illuminating the document; a light source support that supports the light source through an end electrically connected to the light source; the light source support is made of an insulating 611 resin bar; and one end is connected to a power supply side. An electrical connection comprising: a terminal, a terminal connected to the light source side terminal at the other end, and an electrical connection piece buried in the light source support except for both terminals. A document illumination light source support device with a built-in strip.