【特許請求の範囲】
【請求項１】
装置本体部の原稿載置部上に載置された原稿を押える原稿圧板を備え、
当該原稿圧板が、上記装置本体部に対して開閉可能に取り付けられた第１圧板と、この第１圧板に対して回動連結手段を介して折れ曲げ可能に連結された第２圧板と、これら第１圧板及び第２圧板どうしの間の折れ曲げ角度を規制する開角規制手段と、を有する画像読取装置において、
前記第１圧板と第２圧板が、前記原稿載置部上に載置された原稿を当該第１圧板と第２圧板とにより押え込むように折れ曲げ揺動可能に連結されているとともに、
上記開角規制手段は、上記第１圧板又は第２圧板の一方側の圧板に固定され、他方側の圧板に向かって片持状に延在する可撓性係止部材を含み、
当該片持状に延在する可撓性係止部材の自由先端部分は、上記第１圧板及び第２圧板の折れ曲げ時に前記他方側の圧板側に弾性的に当接して前記第１圧板と第２圧板の折れ曲げ角度を規制するように配置されていることを特徴とする画像読取装置。
【請求項２】
前記可撓性係止部材は、第１圧板及び第２圧板の折れ曲げ時において、前記他方側の圧板又は回動連結手段に当接する位置関係に取り付けられていることを特徴とする請求項１記載の画像読取装置。
【請求項３】
前記可撓性係止部材は、第１圧板及び第２圧板のいずれか一方側の圧板に固定された固定部と、この固定部から他方側の圧板に向かって延出する板バネ部とを有し、
上記板バネ部と他方側の圧板との間には、前記両圧板どうしの自由回転角度範囲に相当する隙間が形成されていることを特徴とする請求項１記載の画像読取装置。
【請求項４】
前記板バネ部と他方側の圧板とは、板バネ部の上下撓み方向のそれぞれにおいて、所定の間隔を介して互いに当接する位置関係になされていることを特徴とする請求項３記載の画像読取装置。
【請求項５】
請求項１又は２又は３又は４記載の画像読取装置を備えたことを特徴とする画像形成装置。
[Claims]
[Claim 1]
Equipped with a document pressure plate that holds the document placed on the document placement section of the main body of the device.
A first pressure plate to which the original pressure plate is openably and closably attached to the main body of the apparatus, a second pressure plate to which the original pressure plate is foldably connected to the first pressure plate via a rotary connecting means, and these. In an image reading device having an opening angle regulating means for regulating a bending angle between a first pressure plate and a second pressure plate.
The first pressure plate and the second pressure plate are connected so as to be bent and oscillated so as to press the original material placed on the original material placing portion by the first pressure plate and the second pressure plate.
The opening angle regulating means includes a flexible locking member that is fixed to one of the first or second pressure plates and extends cantilevered toward the other pressure plate.
Free distal end portion of the flexible locking member, said first pressure plate and a second plate having a crooked resiliently abuts to the first pressure plate on the pressure plate side of the other side when extending to the cantilever-like An image reading device characterized in that it is arranged so as to regulate the bending angle of the second pressure plate.
2.
Claim 1 is characterized in that the flexible locking member is attached in a positional relationship in which it comes into contact with the pressure plate on the other side or the rotary connecting means when the first pressure plate and the second pressure plate are bent. The image reader of the description.
3.
The flexible locking member includes a fixing portion fixed to a pressure plate on either one of the first pressure plate and the second pressure plate, and a leaf spring portion extending from the fixed portion toward the pressure plate on the other side. Have and
The image reading device according to claim 1, wherein a gap corresponding to a free rotation angle range between the two pressure plates is formed between the leaf spring portion and the pressure plate on the other side.
4.
The image reading according to claim 3, wherein the leaf spring portion and the pressure plate on the other side are in a positional relationship of contacting each other with a predetermined interval in each of the vertical bending directions of the leaf spring portion. apparatus.
5.
Images forming device you comprising the image reading apparatus according to claim 1 or 2 or 3 or 4, wherein.
【００１０】
【課題を解決するための手段】
上記目的を達成するため、請求項１記載の発明では、装置本体部の原稿載置部上に載置された原稿を押える原稿圧板を備え、当該原稿圧板が、上記装置本体部に対して開閉可能に取り付けられた第１圧板と、この第１圧板に対して回動連結手段を介して折れ曲げ可能に連結された第２圧板と、これら第１圧板及び第２圧板どうしの間の折れ曲げ角度を規制する開角規制手段と、を有する画像読取装置において、前記第１圧板と第２圧板が、前記原稿載置部上に載置された原稿を当該第１圧板と第２圧板とにより押え込むように折れ曲げ揺動可能に連結されているとともに、上記開角規制手段は、上記第１圧板又は第２圧板の一方側の圧板に固定され、他方側の圧板に向かって片持状に延在する可撓性係止部材を含み、当該片持状に延在する可撓性係止部材の自由先端部分は、上記第１圧板及び第２圧板の折れ曲げ時に前記他方側の圧板側に弾性的に当接して前記第１圧板と第２圧板の折れ曲げ角度を規制するように配置されている。
0010
[Means for solving problems]
In order to achieve the above object, the invention according to claim 1 includes a manuscript pressure plate that presses a manuscript placed on the manuscript resting portion of the apparatus main body portion, and the manuscript pressure plate opens and closes with respect to the device main body portion. A first pressure plate that is possibly attached, a second pressure plate that is bendably connected to the first pressure plate via a rotary connecting means, and bending between the first pressure plate and the second pressure plate. In an image reading device having an opening angle regulating means for regulating an angle, the first pressure plate and the second pressure plate make a document placed on the document placing portion by the first pressure plate and the second pressure plate. hold down crooked with being swingably connected to said opening angle regulating means, the fixed to one side of the pressure plate of the first plate or the second plate, toward the other side of the pressure plate cantilever shape includes a flexible locking member extending in the free distal end portion of the flexible locking member extending to the cantilever shape, the other side of the pressure plate when foldability of the first pressure plate and a second plate It is arranged so as to elastically contact the side to regulate the crooked angle of the first pressure plate and the second plate.