JPH01140170A - Image forming device - Google Patents

Abstract

PURPOSE:To save the weight of an opening means for 1st and 2nd units by movably providing an operating lever whose tip is fixed to the 2nd unit in a tube fixed to the 1st unit and forming the operating lever of synthetic resin. CONSTITUTION:In a device main body 11, an upper unit 12 is freely turnably provided on the lower unit 13 through a supporting pin 4, and is opened and closed if necessary. For the opening means 17, a bracket 19 is fitted to the lower end part of an iron pipe 18, through which the opening means 17 is fixed to the lower unit 13. The operating lever 20 is inserted into the iron pipe 18 so that it can move vertically, and is made of synthetic resin. A collar part 21 is formed integrally and protrusively on the outer periphery on the lower part of the operating lever 20, and the upper end part is fixed to the upper unit 12 through a bolt. When a hook part 15 is removed from a locking part 16, the operating lever 20 is pushed up by the energizing force of a spring 23, and the upper unit 21 is turned upward and opened, centered about the supporting pin 14. Thus, the number of parts can be reduced and the weight is saved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an image forming apparatus used as, for example, an electronic copying machine.

(Prior Art) An electronic copying machine has an upper unit that can be opened and closed, and a lower unit.The upper unit is opened for maintenance, inspection, and removal of jammed paper. A mechanism is provided so that when the upper and lower units are unlocked, the upper unit is automatically opened by the release mechanism.

The opening device is configured as shown in FIG. 8, for example.

In other words, 1 in the figure is a tube body, and this tube body 1 is attached to a bracket 2.
It is fixed to the lower unit (not shown) via. Further, an operating rod 3 is inserted into the tube body 1 so as to be movable up and down. The operating rod 3 is composed of an iron pipe 4 and a vinyl pipe 5 covering the outer peripheral surface of the iron vibe 4. A spring receiver 6 is integrally provided in the upper part of the iron pipe 4, and an insertion hole 7 is formed through which a fixture for fixing to the upper part 22 (not shown) is inserted.

A coil spring 8 is mounted inside the tubular body 1 so as to surround the operating rod 3, and its upper end is in contact with the spring receiver 6.

(Problems to be Solved by the Invention) However, in the past, the operating rod 3 has been replaced with an iron vibrator 4 and a vinyl vibrator 5 fitted onto the iron vibrator 4.
Because of this structure, there were problems in that the number of parts was large, the cost was high, the assembly workability was poor, the weight was increased, and the shape was not flexible.

[Structure of the invention]

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention consists of a first and a second unit whose main body can be opened and closed, and the first and second units are opened by an opening means. In the device, the opening means includes a tube fixed to the first unit, an actuation rod movably provided inside the tube and having a tip fixed to the second unit, and the actuation rod connected to the second unit. and a biasing member that biases the second unit in a direction protruding from the tubular body to open the second unit, and the operating rod is made of a synthetic resin material.

(Function) With the above means, the number of parts of the operating rod can be reduced and the above problems can be solved.

(Example) The present invention will be described below with reference to an example shown in FIGS. 1 to 7.

FIG. 3 shows an electronic copying machine, and numeral 11 in the figure is the main body of the apparatus. Various devices constituting an image forming means are disposed inside the apparatus main body 11 so that an original image can be formed.

By the way, the device main body 11 is composed of upper and lower units 12 and 13 as first and second units,
The upper unit 12 is rotatably provided to the lower unit 13 via a support pin 14, and can be opened and closed as necessary.

Further, a hook portion 1 is provided on the open end side of the upper unit 12.
5 is provided in the lower unit 13, and the hook portion 15 is provided in the lower unit 13.
A locking portion 16 is provided to releasably engage.

Further, the upper and lower units 12 and 13 are connected via an opening means 17.

The opening means 17 is constructed as shown in FIG. 1 and FIGS. 4 to 7.

That is, in the figure, 18 is an iron vibrator as a tube body, and a bracket 19 is attached to the lower end of this iron vibrator 18.
It is fixed to the lower unit 13 via this bracket 19.

Also, inside the above-mentioned iron vibrator 18, there is an operating rod 2 that can be moved vertically.
0 is inserted, and this operating rod 20 is made of synthetic resin material, for example,
It's made up of plastic. This operating rod 20
A flange portion 21 is integrally provided on the outer peripheral portion of the upper side thereof, and further, the upper end portion is fixed to the upper unit 12 via a bolt.

Further, inside the iron vibrator 18, there is a coil spring 2 as a biasing member, which surrounds the outer periphery of the operating rod 2°.
3 is inserted, and the upper end of this coil spring 23 is in contact with the flange 21 of the operating rod 20. Further, a guide shaft 24 is provided inside the iron vibrator 18 and inserted into the inside of the operating rod 20.

A stopper 25 is provided at the upper end of the guide shaft 24 to restrict the upward movement of the operating rod 20.

When the hook portion 15 of the upper unit 12 is removed from the locking portion 16 of the lower unit 13, the operating rod 20 of the release means 17 is pushed up by the biasing force of the coil spring 23, and the upper unit 12 is centered around the support bin 14. It is rotated upward and opened.

As mentioned above, since the actuating rod 20 is made of plastic, the number of parts can be reduced, the cost can be reduced, the weight can be reduced, the assembly workability can be improved, and the shape can be freely designed. be able to.

[Effects of the Invention] As explained above, according to the present invention, the number of parts can be reduced, costs can be reduced, weight can be reduced, assembly workability can be improved, and the shape can be changed. This has the effect of allowing free design.

[Brief explanation of the drawing]

1 to 7 show an embodiment of the present invention, in which FIG. 1 is a side sectional view showing the opening device, FIG. 2 is a side view showing the upper unit in an open state, and FIG. 3 is a side view showing the opening device. 4 is a side view showing the opening device, FIG. 5 is a front view, FIG. 6 is a top view, FIG. 7 is a bottom view, and FIG. 8 is a side view showing the upper unit in a closed state. It is a side sectional view showing a conventional example. 12... Upper unit, 13... Lower unit, 1
7... Opening means, 18... Iron vibe (pipe body), 20
...Operating rod. Applicant's Representative Patent Attorney Takehiko Suzue No. 1 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] The main body of the device is composed of a first and a second unit that can be opened and closed, and the first and second units are opened by an opening means, wherein the opening means includes a tube fixed to the first unit; an operating rod that is movably provided within the tubular body and whose tip end is fixed to the second unit; and an urging force that urges the operating rod in a direction to protrude from the tubular body to open the second unit. 1. An image forming apparatus comprising: a member, wherein the operating rod is made of a synthetic resin material.