JPH0618339U - Opening and closing structure of the lid - Google Patents

Abstract

(57) [Summary] [Purpose] To improve usability and prevent damage to the lid. A door 3 that can be opened and closed with respect to the sheet feeding device 1 is provided with a pinion 6, a transmission gear 7 for transmitting the rotation of the pinion 6, an intermediate gear 9, and a drive gear 11. The transmission gear 7 is provided with a protrusion 7 d, and the shaft 12 fixed to the drive gear 11 is fixed to the lid 4 as a swing support shaft of the lid 4. The door 3 is provided with an elastically deformable tongue piece 15, and the tongue piece 15 is formed with a dowel 7d projectingly engaged with the projection 7d to hold the rotation position of the transmission gear 7. A rack 21 that meshes with the pinion 6 is provided on the side surface of the paper tray 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a paper feeding device mounted on a printer device, a copying machine, and the like, and more particularly to an opening / closing structure of a lid provided on a door of the paper feeding device for opening / closing a paper tray insertion port.

[0002]

[Prior art]

 Generally, in this type of lid opening / closing structure, as shown in FIG. 4, the storage chamber 2 for storing the paper tray 20 provided inside the paper feeding device 1 and the opening 2a of the storage chamber 2 can be opened and closed. The door 3, an insertion opening 3a for inserting the paper tray 20 provided in the center of the front surface of the door 3, and an insertion opening 3a swingably supported by a shaft 31a hung between both side surface portions of the door 3. The lid 30a is always biased by a biasing means (not shown) in a direction to close the insertion port 3a. When the paper tray 20 is inserted from the insertion port 3a, the lid 30a is opened as shown in FIG. As shown, the lid 30 is opened by the paper tray, and holds the paper tray 20 in the storage chamber 2 while it is stored.

[0003]

[Problems to be solved by the device]

 By the way, in the lid opening / closing structure having such a structure, when a paper jam or the like occurs and the door 3 is opened, the lid 30 loses the support of the paper tray 20 as shown in FIG. The mouth 3a is closed. If the door is closed again in this state, the lid 30 comes into contact with the paper tray 20 and the lid is damaged. In order not to cause this inconvenience, the operator must always confirm whether or not the paper tray 20 has been pulled out when closing the door 3, which has a disadvantage of being inconvenient. .

Therefore, the present invention has been made in view of the above-mentioned conventional inconveniences or drawbacks, and its purpose is to confirm whether or not the paper tray is pulled out when the door is opened and closed. The purpose of the present invention is to provide a lid opening / closing structure that prevents the lid from being damaged while improving the usability by eliminating the need to do so.

[0005]

[Means for Solving the Problems]

 In order to achieve this object, the lid opening / closing structure according to the present invention has an opening / closing door provided at an opening of a storage chamber for storing a paper tray, and an insertion opening for inserting the paper tray into the door. A lid is opened and closed by opening and closing the insertion port and opening the paper tray by inserting the paper tray.A rack is provided on the side surface of the paper tray, and a gear meshing with the rack and rotation of the gear are provided. A shaft and a protrusion that rotate with respect to each other and an engaging portion that engages with the protrusion by elastic deformation to hold the rotation position of the gear are arranged on the door, and the shaft is a swing support shaft of the lid. And it was fixed to this lid.

[0006]

[Action]

 In the present invention, the lid opened when the paper tray is inserted is kept open regardless of whether the door is opened or closed by the elastic deformation of the protrusion and the engaging portion.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view of an opening / closing structure of a door according to the present invention, FIG. 2 is a perspective view of relevant parts, and FIG. 3 is a side sectional view of the same. In these figures, the same components as those in the conventional technique are designated by the same reference numerals and detailed description thereof will be omitted. The features of the present invention are the opening / closing mechanism 5 for opening and closing the lid provided on the door, the engaging projection 15a, and the rack 21 provided on the paper tray 20.

As shown in detail in FIG. 2, the opening / closing mechanism 5 has a pinion that is rotatably supported coaxially by a shaft 8 that is axially supported by the left side surface portion 3b of the door 3 and is retained by an E ring 9. 6 and the transmission gear 7, an intermediate gear 9 rotatably supported by a shaft 10 pivotally supported on the left side surface 3b of the door 3 and meshing with the transmission gear 7, and both side surfaces of the door 3 meshing with the intermediate gear 9. The drive gear 11 is fixed to a shaft 12 rotatably mounted between 3b and 3c and rotates integrally with the shaft 12.

The pinion 6 is provided with a slot hole 6 a having a fan-shaped cross section that penetrates in the axial direction, and a concave portion 6 b having a circular cross section that is recessed in the left side surface portion, while the transmission gear 7 is provided in the transmission gear 7. , A pair of spiral elastic engagement pieces 7b are provided on the peripheral surface of the central boss portion 7a of the right side surface portion, a pin 7c is provided in a protruding manner, and a protrusion 7d is provided on the peripheral surface. When the engaging piece 7b is fitted into the recessed portion 6b and the pin 7c is inserted into the slot 6a, the transmission gear 7 rotates integrally with the pinion 6 with play.

The shaft 12 that rotates integrally with the drive gear 11 serves as a swing support shaft of the lid 4 and is fixed to the lid 12. Therefore, the lid 4 opens and closes as the shaft 12 rotates. . The lid 4 is constantly urged in the closing direction by a coil spring 13 fitted to the shaft 12 and having one end engaged with a pin 14 planted in the left side surface portion 3b of the door 3. On the left side surface portion 3b of the door 3, an elastically deformable tongue piece 15 is provided so as to project to the back of the paper in FIG. 3, and a dowel 15a located on the rotation locus of the projection 7 is provided at the tip. On the other hand, a rack 21 that meshes with the pinion 6 is provided on the left side surface of the sheet tray 22 on which the sheets 22 are stacked and placed.

The door opening / closing structure of the present invention is configured as described above, and its operation will be described below. First, when the paper tray 20 is inserted through the insertion port 3a, the rack 21 of the tray 20 and the pinion 6 mesh with each other, the transmission gear 7 rotates as the pinion 6 rotates, and the protrusion 7d contacts the dowel 15a. By the elastic deformation of the tongue piece 15, the projection 7d rides on the dowel 15a and engages with the dowel 15a. At the same time, the rotation of the transmission gear 7 is transmitted to the intermediate gear 9 and the drive gear 11 to rotate the shaft 12, the lid 4 opens against the spring 13, and the engagement between the protrusion 7d and the dowel 15a described above. Depending on the combination, the open state is maintained.

Therefore, in this state, even if the door 3 is opened as shown in FIG. 3B, the lid 4 remains open, and therefore, even if the door 3 is closed again, the lid 3 is closed. 4 does not contact the paper tray 20. In other words, the lid 4 is not damaged by the paper tray 20 even if the door 3 is opened and closed until the paper tray 20 is stored in the storage chamber 2.

Next, when the paper tray 20 is pulled out from the storage chamber 2, the rack 21 meshes with the pinion 6 again to rotate the pinion 6 clockwise in FIG. 3, but due to the play of the slot 6a, The transmission gear 7 rotates from the time when the tip of the paper tray 20 to be pulled out is located at the tip of the lid 4, and the engagement between the projection 7d and the dowel 15a is released by the elastic deformation of the tongue piece 15, and at the same time, the transmission gear 7 is released. The rotation of is conveyed to the shaft 12 through the intermediate gear 9 and the drive gear 11 to rotate the lid 4 in the closing direction. When the paper tray 20 is removed from the storage chamber 2, the lid 4 is inserted into the insertion opening 3a. Close.

[0014]

[Effect of device]

 As described above, according to the present invention, the rack is provided on the side surface of the paper tray to be stored in the storage chamber, and the gear that meshes with the rack and the shaft and the protrusion that rotate with the rotation of the gear are provided. Since the door is provided with the protrusion and the engaging portion that elastically deforms to hold the rotation position of the gear, the shaft serves as the swing support shaft of the lid and is fixed to the lid. The lid that opens when the paper is stored in the storage chamber is kept open regardless of whether the door is open or closed by the protrusion and the engagement of the engaging part.Therefore, the paper tray is stored in the storage chamber. Even if the door is opened and closed as it is, the lid does not contact the paper tray, so it is possible to prevent damage to the lid and it is necessary to confirm that the paper tray is not stored when opening and closing the door. Since it does not exist, usability is improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a lid opening / closing structure according to the present invention.

FIG. 2 is a perspective view of an essential part of a lid opening / closing structure according to the present invention.

FIG. 3 is a side sectional view of the lid opening / closing structure according to the present invention.
7A is a state diagram in which a paper tray is not stored, and FIG. 9B is a state diagram in which a paper tray is stored.

4A and 4B are side sectional views of a conventional lid opening / closing structure, in which FIG. 4A is a state diagram in which a paper tray is not stored, FIG. 4B is a state diagram in which a paper tray is stored, and FIG. It is the state figure which opened and closed the door as it was.

[Explanation of symbols]

 1 Paper Feeding Device 2 Storage Room 3 Door 4 Lid 5 Opening / Closing Mechanism 6 Pinion 7d Protrusion 12 Shaft 15a Dowel 20 Paper Tray 21 Rack

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yuya Inoue 5-7-1 Shiba 5-chome, Minato-ku, Tokyo Inside NEC Corporation (72) Kosaku Kitahara 3-49 Kamiishihara, Chofu-shi, Tokyo One-day Electric Data Equipment Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A door which is openable and closable is provided at an opening of a storage chamber for accommodating a paper tray, and an insertion opening for inserting the paper tray is provided in the door, and the insertion opening is made openable. An opening / closing structure of a lid opened by insertion, wherein a rack is provided on a side surface of the paper tray, a gear meshing with the rack, a shaft and a protrusion which rotate with the rotation of the gear, and the protrusion are elastically engaged with each other. An opening and closing of the lid, characterized in that an engaging portion for holding the turning position of the gear is provided on the door, and the shaft serves as a swinging pivot of the lid and is fixed to the lid. Construction.