KR930004157Y1 - Opening/closing apparatus of upper cover in an electrophotographic processor - Google Patents

Abstract

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Description

Top cover switchgear of electrophotographic processor

1 is a perspective view of the upper cover open to show an embodiment of the present invention.

Figure 2 is a front schematic view showing a coupled state of the first invention of the present invention.

3 is a functional diagram showing a locking portion of the present invention (a) is a locked state and (b) is a released state.

Figure 4 is a functional diagram showing the hinge portion of the present invention (a) the cover is closed state (b) is the cover open state.

* Explanation of symbols for main parts of the drawings

1: paper feed cassette 2: pickup roller

3: feed roller 4: developer

5: drum 6: fuser

7: main body 8: upper cover

9: leaf spring 10: laser scanning unit

11: hook shaft 12: hinge

13: hinge bracket 14: hinge axis

15: tension spring 16: buffer bending

17: double hook 18: shaft

19: Slide knob 20: Knob link

22: coil spring

The present invention relates to an electrophotographic processor, and in particular, it is possible to open and close the cover by simple operation without excessive impact on the device during internal inspection or A / S of the device, and when the cover is combined, it is possible to accurately maintain the connection state between the structures. An upper cover opening and closing apparatus of an electrophotographic processor is provided.

General electrophotographic processors can be classified into upper and lower frame types and upper and lower frame types according to their structural form. First, the upper and lower frame types are composed of a feeding part, a conveying part, a developing part, a fixing part, and a discharge part on an integrated frame. This is because when a trouble such as a jam (JAM) generated in the inside of the device is difficult to remove it, there was a problem that the inspection and A / S of the device is difficult.

In addition, the upper and lower frame separation type is composed of the upper and lower bodies in which each structure is arranged distributed in the upper and lower frames to open and close the upper body to the upper side of the lower body, it is easier to check and A / S of the device than the one-piece type While the weight of the upper body is heavy, the weight of the upper body is heavy, and to open and close it is not only a considerable force and force, but also a frequent impact on the device during frequent checks and after-sales service, causing a malfunction of the device.

Therefore, in order to solve the problems in the above general technology, the main frame of the device is installed on the lower frame, that is, the lower body, and only the laser scanning unit is provided on the upper frame to reduce the structure and the weight of the upper body, thereby reducing the upper and lower parts of the upper body. It has been developed to make opening and closing relatively easy and to make inspection and A / S easy.

However, even in the prior art, even if the conventional problem is solved to some extent, the connection state of the upper and lower bodies, that is, the hinge part and the locking part, is not made constant so that the mutual parts of the developing part cannot maintain an accurate connection relationship. The problem of increasing the defective rate was exposed. In addition, hydraulic cylinders or linkages have been widely used as a means of mitigating the impact of lifting and lowering force when opening and closing the upper body, considering the specificity of equipment that loses reliability even in the case of slight impact. Not only were these expensive drawbacks, there were not many problems that were difficult to repair in case of failure.

The present invention was created in view of the above-mentioned problems of the prior art, and the main purpose of the present invention is to minimize the shock caused by the lifting and lowering force when opening and closing the upper cover (upper body) of the device, and to easily open and close. .

Another object of the present invention is to improve the reliability of the device by accurately maintaining the connection state between the developing system structures when the top cover is coupled.

Another object of the present invention is to simplify the parts of the device to facilitate repair and inspection, and to reduce the production cost.

To achieve the above objects, a tension spring and a cushioning bending piece are installed on a hinge bracket which is a connection part of the main frame and the upper cover, and a plate spring is laid on the laser scanning unit installed on the upper cover, and the locking part of the main frame and the upper cover is installed. An embodiment of the present invention that constitutes a double hook type locking device operated by a knob will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, the paper feed cassette 1, the pickup roller 2, the transfer roller 3, the developing unit 4, the drum 5, and the fixing unit ( 6) Attach the laser scanning unit (10) having the leaf spring (9) in elastic contact with the developer (4) to the upper cover (8) of the main body (7) having a back and the hook shaft (11) on one side At the same time, a hinge 12 is formed on the other side, and the hinge bracket 13 is installed to the hinge bracket 13 installed on the upper inner wall of the main body 7 so that the hinge shaft 14 and the tension spring 15 can be rotated and opened. The upper end of the (13) was formed buffer buffer 16 to alleviate the shock when opening and closing the upper cover (8) and at the same time opening and closing at a certain angle. In addition, on the opposite side of the hinge portion, a double hook 17 which is fastened or detached from the hook shaft 11 when the upper cover 8 is opened or closed is pivotally installed from the shaft 18 and operated by the slide knob 19. By being coupled to the knob link 20 to be connected to the connecting pin 21 to be coupled to the hook shaft 11 of the upper cover (8) by the operation of the slide knob (19), the slide knob (19) The shaft between the shaft 18 and the coil spring 22 was connected to maintain the fastening state of the double hook 17 and the hook shaft 11.

In addition, another embodiment of the present invention may use the leaf spring 9 of the bottom surface of the laser scanning unit 10 without installing the tension spring 15 in the hinge portion, which is a double hook by the operation of the slide knob 19 At the same time when the 17 and the hook shaft 11 are separated, the upper cover 8 is slightly opened upward by the elasticity of the leaf spring 9, and the user is finally opened.

In addition, as another embodiment for imparting the top cover opening force, that is, the cover lift force of the present invention may be configured to raise the top cover in accordance with the operation of the knob by providing a link or a spring that can bring a synergistic effect around the double hook. have.

Reference numeral 23 is a double hook slope.

Referring to the operation and effects of the present invention as described above in detail based on the accompanying drawings as follows.

As shown in FIG. 3, the slide knob 19 is held in a state in which the double hook 17 of the main body 7 and the hook shaft 11 of the upper cover 8 are engaged by the elasticity of the coil spring 22. ) To the left, the knob link 20 connected thereto moves the double hook 17 to the left, so that the hook shaft 11 of the upper cover 8 moves the laser scanning unit as shown in FIG. The primary spring rises by the restoring force of the leaf spring 9 installed at 10), followed by the tension spring 15 between the hinge bracket 13 and the hinge 12 installed at the main body 7 and the upper cover 8. The upper cover 8 is continuously rotated.

After the upper cover 8 is opened to some extent, the buffer bending piece 16 formed on the hinge bracket 13 of the main body 7 cushions the impact caused by the upward force of the upper cover 8 and maintains a constant angle. In such a state, when the user who has completed the inspection or A / S inside the machine lowers the upper cover 8 again to engage the main body 7, the hook shaft 11 of the upper cover 8 is attached to the main body 7. Press the inclined surface 23 of the installed double hook 17 to move to the left and descends, and then immediately descends completely by the restoring force of the coil spring 22 connected to the shaft 18 and the slide knob 19. 11) is firmly fastened to the double hook 17. At this time, the leaf spring 9 installed on the bottom surface of the laser scanning unit 10 is in contact with the developer 4 of the main body 7 and the upper cover 8 Alleviate the impact of falling and zoom as well as the laser scanning oil Since thereby maintain the correct connection state between a horizontal state and a developing device (4) in the tree 10, it is possible to prevent malfunction of the device.

As described above, the present invention can open and close the top cover by simple operation during inspection or A / S of the device, and minimize the shock during opening and closing to maintain the accuracy of the device in a good state. The reliability of the equipment can be improved by greatly reducing the defective state of connection between the structures, and the structure is simpler than the hydraulic cylinder device or link device according to the prior art, which makes repair and replacement easier and at the same time production cost. It is a very useful design that can be saved.

Claims (3)

A main body 7 including a paper feed cassette 1, a pickup roller 2, a transfer roller 3, a developing unit 4, a drum 5, a fixing unit 6, and the like, and a main body above the main body 7 An electrophotographic processor having an upper cover (8) rotated and opened from an arbitrary point of (7), wherein the electrophotographic processor is provided on a predetermined side wall of the main body (7) and is moved upward by an inclined magnetic motion of the knob link (20). Double hooks 17 for locking and releasing the hook shaft 11 on the cover 8 side, and the upper hooks 8 at positions corresponding to the double hooks 17, respectively. Hook cover 11 which is latched and released from the upper cover 8 while the upper cover 8 is coupled to the main body 7 at the side wall of the opposite side of the main body 7 opposite to the double hook 17 side. Hinge 12 to rotate the circular arc about one side of the main body 7 and the upper cover 8 to the main body 7 while fixing the hinge 12 on the inner wall side of the main body 7. When it is opened from the hinge 12 is folded to one side of the upper cover (8) characterized in that the configuration associated with the hinge bracket 13 having the opening angle blocking function and the buffered bending piece 16 of the buffer role. Top cover opening and closing device of the electrophotographic processor. The double hook 17 according to claim 1, which locks and releases the hook shaft 11 of the upper cover 8 at the side wall of the main body 7, respectively, and is fixed to the longitudinal midpoint of the double hook 17, respectively. Knob link 20 for holding a constant arc rotation about the axis 18 point, and fixed to the longitudinal midpoint of the knob link 20 to allow the circular movement of the double hook 17 by manual operation. Coil springs provided between the slide knob 19 and one of the shaft 18 points of the double hook 17 and the slide knob 19 side to suppress the deflected motion of the double hook 17 with a unique elastic force ( 22) The upper cover opening and closing device of the electrophotographic processor, characterized in that the combined configuration. The method of claim 1, wherein the lower portion of the laser scanning unit (10) of the upper cover (8) to reduce the impact of closing the upper cover (8) between the lower portion of the laser scanning unit (10) and the upper flat surface such as the developer (4) The top cover of the electrophotographic processor, characterized in that the leaf spring unit 9 is provided with a constant lifting force when the upper cover 8 is opened while maintaining the horizontal state of the laser scanning unit 10 after the coupling is precisely performed. Switchgear.