JPH0544466Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hinge for an opening/closing body used for attaching an opening/closing body such as a pressure plate of a copying machine to a mounting member thereof, such as a main body of the copying machine.

[Prior Art] Conventionally, for example, an opening/closing member such as a pressure plate in a copying machine is coupled to the main body of the copying machine so as to be openable/closable, and the opening/closing member can be stopped at any position between a fully open position and a fully closed position. A hinge for an opening/closing body having a so-called free stop function is known. In this type of hinge, an arm member attached to the opening/closing body side and a base member attached to the mounting member side of the opening/closing body are connected by a support shaft so that they can rotate relative to each other, and resist the moment in the closing direction due to the own weight of the opening/closing body. The opening/closing body is provided with an elastic member that applies a moment in the opening direction to the opening/closing body.

[The problem that the idea aims to solve]

However, most conventional hinges have not been provided with a mechanism for easily increasing or decreasing the moment in the opening direction imparted to the opening/closing body by the elastic member while the hinge remains attached to the opening/closing body and the mounting member. Therefore, if the above fristop function becomes malfunctioning for some reason, remove the cause of the malfunction by replacing the hinge or removing the hinge from the opening/closing body or the mounting member, and then reinstall the hinge from the opening/closing body or the mounting member. Installation required a lot of troublesome work. In addition, even in conventional hinges equipped with the above mechanism,
Since it was not possible to operate the mechanism while the hinge was attached to the opening/closing body or the mounting member, it was a hassle to remove the hinge, adjust the mechanism, and then reattach the hinge.

A similar problem also exists with hinges that do not have a free stop function, that is, hinges in which a base member and an arm member, which are connected so as to be relatively rotatable by a support shaft, are urged in the opening direction by an elastic member. Was.

This idea was made in view of the above circumstances.
Provided is a hinge that can easily increase or decrease the magnitude of the moment in the opening direction imparted to an opening/closing body by an elastic member while the hinge is attached to an opening/closing body such as a pressure plate or a mounting member of the opening/closing body such as a copying machine body. The purpose is to

[Means to solve the problem]

In the hinge of the opening/closing body of the present invention, a base member attached to the mounting member side of the opening/closing body and an arm member attached to the opening/closing body side are connected so as to be relatively rotatable by a support shaft, and the moment in the closing direction due to the own weight of the opening/closing body side is The hinge of the opening/closing body is provided with an elastic member that applies a moment in the opening direction to the opening/closing body against A support pin that receives the elastic force of the elastic member is fitted and held in the arm member, and a spring pressure adjustment mechanism that displaces the support pin in the elongated hole in the direction of expansion and contraction of the elastic member is provided on the arm member. The pressure adjustment mechanism includes a cam that is held in a pinched pressure state between the support pin urged by the elastic member and a support plate provided on the arm member, and has an inclined cam surface that contacts the support pin. and an adjustment screw for sliding the cam member back and forth with respect to the support pin, and the axis of the adjustment screw is set in the thickness direction of the opening/closing body attached to the arm member.

[Effect]

According to the hinge with this configuration, when the cam member is moved back and forth relative to the support pin by turning the adjustment screw, the support pin follows the cam surface of the cam member and is displaced within the elongated hole, causing the entire elastic member to move forward and backward relative to the support pin. The length changes. Therefore, the magnitude of the moment in the opening direction imparted to the opening/closing body by the elastic member changes. Further, since the axis of the adjustment screw is set in the thickness direction of the opening and closing body, the adjustment screw can be turned with the opening and closing body being opened.

[Embodiment] FIG. 1 is a perspective view of a hinge 1 according to an embodiment of the present invention. This hinge 1 consists of an arm member 2 that is attached to an opening/closing body such as a pressure plate for holding down a document in a copying machine or a lid of a stereo using screws or other attachment means, and an arm member 2 that is attached to an opening/closing body such as a pressure plate for holding down a document in a copying machine or a lid of a stereo, and an arm member 2 that is attached to the main body of the copying machine or the main body of the stereo or other equipment. The base member 3 is attached to a mounting member such as a bracket provided on the main body with screws or other mounting means.
The arm member 2 has a U-shaped cross section with brackets 4, 4 at both ends, and the base member 6 has a dish-shaped cross section, and both ends are connected to each other by a support shaft 5 for relative rotation. The fully open position of the arm member 2 is regulated by a stopper 6 fixed to the rear end of the base member 3. 7 is a compression coil spring which is an example of an elastic member; 8 is an expandable cylindrical case housing the compression coil spring 7; It is slidably fitted with the inner cylinder 10. The lower end of the bottomed outer cylinder 9 is supported in a tiltable manner by a pin 11 provided on the base member 3 at an eccentric position on the front side with respect to the support shaft 5, and the upper end of the covered inner cylinder 10 is supported by the arm member 2. It is rotatably supported by a support pin 12 provided in the
A protrusion 10a provided on the covered inner cylinder 10 is in contact with the bottomed outer cylinder 9. Further, the support pin 12 is inserted into the elongated hole 1 formed in the brackets 4, 4 of the arm member 2.
3 and 13, and the elongated hole 13 extends in the direction of expansion and contraction of the compression coil spring 7.

A screw hole 14 is formed in the base member 3, and a flange 16 is held in a loosely fitted state with play at the tip of a screw shaft 15 screwed into the screw hole 14. 17 is a lock nut screwed into the screw shaft 15.

In FIG. 1, 18 is a spring pressure adjustment mechanism. The spring pressure adjustment mechanism 18 includes a cam member 20 held in a pinched state between the support pin 12 that receives the elastic force of the compression coil spring 7 and a support plate portion 19 provided on the arm member 2; This cam member 20
An adjustment screw 21 is provided for sliding the support pin 12 back and forth with respect to the support pin 12. As shown in detail in FIG. 3, the cam member 20 has an inclined cam surface 22.
A pair of front and rear protrusions 23 and 24 are formed by bending a plate having a shape, and a screw hole 25 is formed in the front protrusion 23, and a screw hole 26 is formed in the rear protrusion 24. The adjusting screw 21 has a threaded portion 27 screwed into the screw hole 25, a shaft portion 28 loosely fitted into the back hole 26, and a head 29 provided at the end of the threaded portion 27, which are integrally formed concentrically. This is what I did. and,
As shown in FIG. 2, the tip of the shaft portion 28 is butted against the face plate portion 2a of the arm member 2, and the head portion 29 is supported by an inwardly cut and raised piece 30 formed on the bracket 4. Further, the axis of the adjusting screw 21 is set in the thickness direction of the opening/closing body 110 attached to the arm member 2, while an opening 31 is provided on the back surface of the opening/closing body 110 at a location corresponding to the head 29 of the adjusting screw 21. is formed.

A mounting leg 32 is fixed to the base member 3 with a screw 33, and the mounting leg 32 is attached to a holder 101 provided on a mounting member 100 as shown in FIG.
The base member 3 is attached to the mounting member 100 by inserting the base member 3 into the mounting member 100. Note that the mounting level of the opening/closing body 2 is adjusted by adjusting the protrusion width of the screw shaft 15 from the back surface of the base member 3.

In the hinge 1 described above, when the adjusting screw 21 of the spring pressure adjusting mechanism 18 is rotated in the tightening direction, the tip of the shaft portion 28 presses the face plate portion 2a of the arm member 2, and the cam member 20 is rotated by the adjusting screw 21. Move forward by a distance corresponding to the amount (arrow X in Figure 2). As a result, the support pin 12 in contact with the cam surface 22 is displaced downward inside the elongated hole 13 against the elastic force of the compression coil spring 7, and the compression coil spring 7
The overall length of the cylindrical cover 8 is shortened together with the cylindrical cover 8. Therefore, the opening/closing body 11 is moved by the compression coil spring 7.
The moment applied to the 0 side in the opening direction increases. Conversely, when the adjustment screw 21 is rotated in the loosening direction, a portion of the elastic force of the compression coil spring 7 is resolved into a backward component force by the cam surface 22, and the cam member 2
0 moves backward by a distance corresponding to the amount of rotation of the adjusting screw 21 (arrow Y in FIG. 2). As a result, the support pin 12 in contact with the cam surface 22 is displaced upward inside the elongated hole 13 by the elastic force of the compression coil spring 7, and the entire length of the compression coil spring 7 is extended to the cylindrical cover 8.
At the same time, the length increases, and the moment in the opening direction given to the opening/closing body 110 side by the compression coil spring 7 becomes smaller. The operation of rotating the adjustment screw 21 is as follows:
This can be done by opening the opening/closing body 110 and inserting the driver bit 200 through the opening 31 of the opening/closing body 110 as shown by the imaginary line in FIG.

Note that the hinge 1 shown in FIGS. 1 and 2
is the difference between the moment in the closing direction due to the own weight of the opening/closing body 110 side and the moment in the opening direction applied to the opening/closing body 110 by the compression coil spring 7.
It is absorbed by the frictional resistance between the protrusion 10a and the bottomed outer cylinder 9 within the entire opening angle range of 0, and the opening/closing body 110
The hinge of the present invention exhibits a so-called free stop function within the entire range of opening angles, and the hinge of the present invention, including those equipped with such a free stop function, can be attached to the base member attached to the mounting member side of the opening/closing body. and an arm member attached to the opening/closing body side are connected to be relatively rotatable by a support shaft, and the opening/closing body 11
This applies to all hinges equipped with an elastic member such as a compression coil spring 7 that applies a moment in the opening direction to the opening/closing body 110 against the moment in the closing direction due to its own weight on the zero side.

[Effect of idea]

As described above, the hinge of the opening/closing body according to the present invention is
Since the overall length of the elastic member can be adjusted by turning the adjustment screw while attached to the opening/closing body or attachment member, it is possible to easily and quickly correct malfunctions of the free stop function of hinges equipped with the free stop function described at the beginning. It can be corrected with. Even in a hinge that does not have a free stop function, it is possible to easily increase or decrease the magnitude of the moment in the opening direction imparted to the opening/closing body by the elastic member in a short time.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a hinge according to an embodiment of the present invention, Fig. 2 is a sectional view showing a state in which the mounting member and the opening/closing body are connected via the hinge, and Fig. 3 is a main part of the spring pressure adjustment mechanism. FIG. 1... Hinge, 2... Arm member, 3... Base member, 4... Bracket, 5... Support shaft, 7...
Compression coil spring (elastic member), 12...support pin,
13...Long hole, 18...Spring pressure adjustment mechanism, 19...
... Support plate part, 20 ... Cam member, 21 ... Adjustment screw, 22 ... Cam surface, 110 ... Opening/closing body, 100
...Mounted parts.

Claims (1)

[Scope of Claim for Utility Model Registration] A base member attached to the mounting member side of the opening/closing body and an arm member attached to the opening/closing body side are connected so as to be relatively rotatable by a support shaft, and the moment in the closing direction due to the own weight of the opening/closing body side is connected. The hinge of the opening/closing body is provided with an elastic member that applies a moment in the opening direction to the opening/closing body against the opening/closing body, and a long hole is formed in the bracket formed on the arm member along the expansion/contraction direction of the elastic member, and a long hole is formed in the long hole. A support pin that receives the elastic force of the elastic member is fitted and held, and a spring pressure adjustment mechanism is provided on the arm member to displace the support pin in the elongated hole in the direction of expansion and contraction of the elastic member. The adjustment mechanism includes a cam member that is held in a pinched state between the support pin biased by the elastic member and a support plate provided on the arm member, and has an inclined cam surface that contacts the support pin. and an adjusting screw for sliding the cam member back and forth with respect to the support pin, the axis of the adjusting screw being set in the thickness direction of the opening and closing body attached to the arm member. Hinge.