JP2006343477A - Small hinge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small hinge that obtains secure and stable rotation torque when an opening/closing member K is opened, and prevents a support member 3 and a hinge body 1 from being damaged or broken. <P>SOLUTION: The hinge is constituted so that the support member is freely rotatably attached, via a rotation shaft, to the hinge body attached to an apparatus body such as a copying machine. An elastic body is accommodated in a slider disposed freely slidably in the hinge body, the cam face of the slider is abutted on the rotating cam part of the support member, and the support member is turned by the elastic body so as to open the opening/closing member attached to the support member, wherein the support member is provided with an elastic frictional part so formed as to be elastically bent, and when the opening/closing member is opened by rotating the support member, the elastic frictional part is elastically abutted on the contact part of the hinge body. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a small hinge for opening and closing an opening / closing member such as a document pressure plate of a copying machine or an MFP (multifunctional peripheral device).

In recent years, hinges for copiers and MFPs have been declining in cost and size, and only one of the two hinges is loaded with a high-load spring, and the other hinge is a simple one without a spring. The combination is becoming mainstream.
As a small hinge of this type, conventionally, as shown in FIG. 3A, a support member 3 is rotatably attached to a bracket portion 1a of a hinge body 1 via a rotating shaft 2 and is slid into the hinge body 1. A compression metal spring 5 is accommodated in a slider 4 that is movably provided, the cam surface 4 a of the slider 4 is brought into contact with the rotating cam portion 3 a of the support member 3, and the support member 3 is moved by the compression metal spring 5. 3B, there is a small hinge that is configured to rotate to open the opening / closing member K as shown in FIG.

  However, in the conventional small hinge, when the opening and closing member K is opened as shown in FIG. 3B, the support member 3 is vigorously rotated by the compression metal spring 5, and a stable rotational torque cannot be obtained. The support member 3 and the hinge body 1 may be damaged or broken.

  The problem to be solved by the present invention is to provide a small hinge that can obtain a reliable and stable rotational torque when the opening / closing member K is opened, and does not cause damage or breakage of the support member 3 or the hinge body 1. .

  The small hinge of the present invention has a support member rotatably attached to a hinge body attached to an apparatus body such as a copying machine via a rotation shaft, and an elastic body in a slider provided slidably in the hinge body. The slider cam surface is brought into contact with the rotating cam portion of the support member, the support member is rotated by the elastic body, and the opening / closing member attached to the support member is opened. In the hinge, the elastic friction portion is formed on the support member so as to be elastically bent, and when the opening and closing member is opened by rotating the support member, the elastic friction portion elastically contacts the contact portion of the hinge body. It is configured as described above.

  The small hinge of the present invention has an advantage that a reliable and stable rotational torque can be obtained when the opening and closing member is opened, and the support member and the hinge body are not damaged or broken.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows an improved embodiment of the conventional small hinge shown in FIG. 3, wherein 1 is a hinge body, 2 is a rotating shaft, 3 is a support member, 4 is a slider, 5 is a compression metal spring, and the like. It is an elastic body.

  The hinge body 1 is attached to an apparatus main body M such as a copying machine in an inserted state, and a support member 3 is rotatably attached to a bracket portion 1a protruding from the apparatus main body M via a rotary shaft 2. It has been. An opening / closing member K such as a pressure plate is attached and fixed to the support member 3.

  A slider 4 is housed in the hinge body 1 so as to be slidable in the vertical direction, and a double compression spring 5 is interposed between the hinge body 1 and the slider 4. A cam surface 4 a is formed on the outer end surface of the slider 4. The cam surface 4a is in elastic contact with a rotating cam portion 3a provided on the support member 3, and the repulsive force of the elastic body 5 causes the opening / closing member K to rotate against its weight. As shown, it acts to open.

  Reference numeral 6 denotes an elastic friction portion, which is formed on the support member 3 so as to be elastically bent. Therefore, as shown in FIG. 2, when the support member 3 is rotated to open the opening / closing member K, the elastic friction portion 6 elastically contacts the contact portion 1 b of the hinge body 1, A reliable and stable friction torque is generated.

  In addition to the copying machine, the small hinge of the present invention has an opening / closing member such as a scanner, a fax machine, a multi-function machine (MFP), a Western-style toilet, etc. Good.

It is composition explanatory drawing which shows one Example of the small hinge of this invention. It is action | operation explanatory drawing of the hinge of FIG. It is structure (A) and effect | action (B) explanatory drawing of the conventional small hinge.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hinge main body 1a Bracket part 2 Rotating shaft 3 Support member 3a Rotating cam part 4 Slider 4a Cam surface 5 Compression metal spring 6 Elastic friction part K Opening and closing member M Device main body

Claims (1)

  A support member is rotatably attached to a hinge main body attached to an apparatus main body such as a copying machine via a rotary shaft, and an elastic body is accommodated in a slider provided slidably in the hinge main body. In the hinge configured to bring the cam surface into contact with the rotating cam portion of the support member, rotate the support member by the elastic body, and open the opening / closing member attached to the support member. The elastic friction part is formed so as to be elastically bent, and the elastic friction part elastically contacts the contact part of the hinge body when the support member is rotated to open the opening / closing member. A small hinge.

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