JPH0361956A - switchgear - Google Patents

Abstract

PURPOSE:To prevent the processing in a lower aperture part from being inter rupted by an upper cover by setting up the projected length of the upper cover from the side face of a device body to a value shorter than that of a lower cover in the case of simultaneously opening the two upper and lower covers. CONSTITUTION:Two covers 25, 26 to be opened/closed around lower side axes 27, 28 are independently attached to aperture parts 23, 24. The projected length L1 of the opened upper cover 25 from the side face of the upper case body 3 is set up to a value shorter than the length L2 of the opened lower cover 26 from the side face of the lower case body 4. Even when an operator inserts a hand or a tool from the lower aperture 24 while observing the inside from the upper aperture part 23 to process transfer paper P, a sufficiently large space is secured on the upper part of the lower cover 26 so that the processing is not interrupted by the upper cover 25.

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to an opening/closing device used in a paper jam removal mechanism of an image forming apparatus such as a copying machine. (Prior art) FIG. 4 shows an image forming apparatus 101 to which a conventional opening/closing device is applied.
It shows. Apparatus body 10 of this image forming apparatus 101
2 is composed of an upper housing 105 equipped with an optical system 103 and an image forming unit 104, and a lower housing 106 on which this upper housing 105 is placed, and a plurality of cassettes storing transfer paper A. The lO7 can be installed separately from the front side. On the other hand, an opening 1 provided vertically on the side surface of the device main body 102
08 and 109 are separately attached with covers 112° 113 that can be opened and closed using shafts 110° 111 on the lower side as fulcrums, and when the transfer paper A is jammed in the main body 102 of the apparatus, this force /<- 112 and 113 are opened for processing. (Problem to be Solved by the Invention) However, in the above-mentioned conventional example, when the cover 112 and the cover 113 are both open, the user inserts his/her hand or a tool into the apparatus main body 102 through the lower opening 109, causing a paper jam. When attempting to process paper jams, the upper cover 112 becomes a hindrance.As a result, the location of the paper jam inside the main body 102 cannot be seen, or the user has to take an unreasonable posture such as bending down to the extent that the process is difficult. This was causing a hindrance to work. This invention is intended to solve the above problem, and provides an opening/closing device in which the upper cover does not get in the way when processing is performed on the lower opening side when both the upper cover and the lower cover are interposed. It is intended to. (Means and Means for Solving the Problems) In order to achieve the above object, the present invention provides, as a first means,
In an opening/closing device in which two covers, which open and close using the lower side as a fulcrum, are separately attached to openings connected vertically on the side of the device body, the upper cover is the one that opens and closes from the side of the device body when opened. The length of the lower cover in the protruding direction is set shorter than the length of the lower cover in the direction of protruding from the side surface of the device main body when opened. In addition, as a second means, in an opening/closing device in which two covers that open and close using the lower side as a fulcrum are separately attached to openings arranged vertically on the side of the device main body, the opening angle of the upper cover is adjusted. , which is set smaller than the opening angle of the lower cover. (Function) The function of the first means based on the above configuration is that when the two covers are opened at the same time, the amount of protrusion from the side surface of the device main body is smaller for the upper cover than for the lower cover. Further, the second means has an effect that when the two covers are opened at the same time, the opening angle of the upper cover with respect to the side surface of the device main body is smaller than that of the lower cover. (Example) Next, the present invention will be explained based on FIGS. 1 to 3. FIG. 1 shows an image forming apparatus l to which the first means of the present invention is applied.
The main body 2 of the image forming apparatus 1 is composed of an upper housing 3 and a lower housing 4. An optical means 5 consisting of a light source 9, a reflecting mirror, a lens, etc. is provided inside the upper housing 3, and below this optical means 5, a photosensitive drum, a secondary charger, a developing device, a transfer/separation charger, etc. are provided. an image forming means 6, and a conveying path 7 including a fixing step.
．． A re-conveyance path 8 is arranged. Also, 9. Reference numeral ``to'' denotes a cassette containing transfer paper P, and cassettes 9 and 10 are inserted into the upper housing 3 from the front side along a guide member (not shown). 11.1
2 is a cassette 9. A paper feed roller 13 for carrying out the transfer paper P in IO is a conveyance path leading to a registration roller 14, and this conveyance path 13 is provided with conveyance rollers 15 and 16. The lower casing 4 has substantially the same planar cross-sectional shape as the upper casing 3 and holds the upper casing 3. Inside this lower housing 4, cassettes 17 and 18 containing transfer paper P are inserted in the same manner as described above, and paper feed rollers 19,
20 is set

[21 is the conveyance path 1 of the upper case 3]
3, and is a conveyance path provided with conveyance rollers 22a and 22b. Reference numerals 23 and 24 denote openings that are vertically connected to the sides of the device main body 2, that is, the upper housing 3 and the lower housing 4;
．． 24 is provided at a position corresponding to the transport paths 13 and 21. Reference numerals 25 and 26 denote two covers that are opened and closed using shafts 27 and 28 on the lower side as fulcrums, and these covers 25 and 26 are separately attached to the openings 23 and 24. The length L of the upper cover 25 in the direction in which it protrudes from the side surface of the upper housing 3 when opened! is the lower cover 26
This is set to be shorter than the length L2 in the direction in which the lower housing 4 protrudes from the side surface when opened. In addition, 29 is a flexible holding member which connects the cover 25.26, the upper housing 3, and the lower housing 4 separately, and this holding member 29 holds the open position of the cover 25.26 approximately horizontally. This is to keep it in good condition. Next, the operation of the above embodiment will be explained. First, press the operation button (1) not shown, and the cassette)9,1
Transfer paper P of any one of 0, 17, and 18 is conveyed out by the operation of paper feed rollers li, 12, 19, and 20, and passes through conveyance path 16 or 21 to registration roller 1.
4. and. The latent image formed by the optical means 52 and the image forming means 6 is developed and transferred onto the transfer paper P, and is also discharged to the outside via the conveyance path 7. During the above operation, if the transfer paper P becomes jammed near the conveyance path 13 of the upper housing 3 due to double skew feeding, etc., open the upper cover 25 and remove the paper P from the lower housing. When the transfer paper P becomes jammed near the conveyance path 21 of No. 4,
Open the lower cover 26 and process. 7. By the way, when the transfer paper P becomes jammed between the conveyance paths 13 and 21, that is, near the conveyance roller 22a, the covers 25 and 26 are simultaneously opened and the upper and lower openings 23. 24 and carefully check the clogged condition while processing. In this case, even when processing the transfer paper P by looking through the upper opening 23 and inserting a hand or a tool through the lower opening 24, there is sufficient space above the lower cover 26. Since it is secured, the upper cover 25 does not get in the way, and processing can be carried out quickly. Also,
There is no need for one worker to take an unreasonable posture when looking into the opening 24 below. FIG. 2 shows a second means. The upper cover 25 and the lower cover 26 are opened and closed using shafts 27 and 28 as fulcrums, and the opening angle θ is controlled by flexible opening regulating means 30 and 31. , θ2 are regulated. In other words, the length of the opening regulating means 30 that connects the upper housing 3 and the upper cover 25 is shorter than the length of the opening regulating means 31 that connects the lower housing 4 and the lower cover 26. Opening angle θ] is θ
It is smaller than 2. Therefore, both force bar 25.2
6 at the same time, sufficient space can be secured above the lower cover 26, and the same effect as the first means described above can be achieved. Note that the other constituent parts are constructed in the same manner as in FIG. 1, and therefore their explanation will be omitted. In addition, in FIG. 2, the upper housing 3 and the upper cover 2 are
By the flexible opening regulating means 30 connected to 5,
Although the opening angle θ1 is configured to be smaller than 02, as shown in FIG. By inserting it into the arc-shaped guide groove 33, the opening angle θl may be made smaller than 02. (Effects of the Invention) Since the present invention is constructed as described above, even when both the upper and lower covers are open, sufficient space can be secured above the lower cover. Therefore, when the user inserts his or her hands or tools into the device body through the lower opening to perform the desired processing, the upper cover does not get in the way, making it possible to perform processing tasks quickly. be effective.

[Brief explanation of drawings]

1 and 2 are schematic configuration diagrams of an image forming apparatus to which the first means and second means are applied, FIG. 3 is an enlarged front view showing another embodiment of the second means, and FIG. 4 is a conventional example. FIG. Explanation of symbols 2...Device main body 23.24...Opening 25.
26...Cover Ll, L2...Cover length θ1, θ2...Opening angle

Claims (2)

[Claims] (1) In an opening/closing device in which two covers, which open and close using the lower side as a fulcrum, are separately attached to openings connected vertically on the side of the device body, the upper cover, when opened, opens the device body. An opening/closing device in which the length in the direction in which the lower cover protrudes from the side surface of the device body is set to be shorter than the length in the direction in which the lower cover protrudes from the side surface of the device body when opened. (2) In an opening/closing device in which two covers, which open and close using the lower side as a fulcrum, are separately attached to openings arranged vertically on the side of the device body, the opening angle of the upper cover is set to the opening angle of the lower cover. Opening/closing device set smaller than the opening angle of the cover.