JPS5829241Y2 - Opening/closing angle regulating device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an opening/closing angle regulating device for a movable member that is swingably attached to a fixed member.

Conventionally, for example, an opening/closing angle regulating device has been installed between the main body of a writing desk and a table to enable the table to be opened and closed and to horizontally support the table when opened.
An opening/closing angle regulating device is installed in which a pin on the side of the table is slidably attached to a long hole in an arm that is swingably attached to the main body of the writing desk. When the table is released, the table stops due to an impact corresponding to the weight of the table when the pin touches the end of the slotted hole.At this time, not only does a loud impact sound occur, but the impact also causes the mounting part of the pin and arm to break. In addition to being easy to break, it also had the disadvantage of detracting from its elegance and quality as furniture or furnishings.

In addition, when this opening/closing angle regulating device is used, for example, to open and close the lid of a player, in order to reliably maintain the open state of the lid, that is, the almost vertical posture, it is necessary to use a nut attached to the threaded part of the pin or It is necessary to clamp the arm to the lid body by tightening the stepped screw that also serves as a pin, and even moreover, in order to stop the lid body in the middle of opening and closing, it is necessary to tighten the nut or the stepped screw, and this tightening is not necessary. If it is weak, the weight of the lid will quickly loosen the tightening, causing the lid to close suddenly.In this case, as in the case above, not only will a loud impact sound be produced, but the impact will easily break the lid mounting part and the player itself. However, if an opening/closing angle regulating device was created using a damper or a balance weight to eliminate these drawbacks, the device itself would be too large to be of practical use.

The purpose of this invention is to provide an opening/closing angle regulating device that has a simple structure, is easy to install, does not take up much space, has quiet and smooth opening/closing operations, and does not cause any impact even if you let go of your hand during opening/closing. By doing so, the above-mentioned conventional drawbacks are eliminated.

Next, the configuration of an embodiment of the present invention will be explained with reference to the drawings.

A fixing plate 4 is attached to the movable member 2 via a screw 3 to the movable member 2, which is attached via a hinge (not shown) to the fixed member 1 so as to be swingable in the direction of arrow B in FIGS. 1 and 2. On boarding 4,
An arm 6 having a protrusion 5 at its tip is attached via a stepped screw 7 so as to be swingable in the same direction as the swinging direction of the movable member 2.

Also, a fastening plate 9 is attached to the fixing member 1 via screws 8.
As shown in FIG.
Dowel hole 11 and dowel pin 1 that are split into two and integrally formed
A plastic-molded guide block 13, which is assembled together as shown in FIGS. 1 and 3 by fitting the parts 2 and 2, is rotatably attached to the fastening plate 9 via a shaft 14 crimped to the guide block 9. The arm 6, which is slidably attached to the block 13 via a stepped straight groove 15, also fits into the straight groove 19 of the pressing body 18, which swings by loosely fitting a hole 17 into a pin 16 formed integrally with the guide block 13. They are slidably fitted, and in this fitted state, the arm 6 is pressed by the biasing force of the plate spring 20 via the pressing body 18, and frictional resistance is applied when sliding, and this frictional resistance is applied to the guide block 13. It can be arbitrarily set by changing the biasing force of the leaf spring 20 using the adjustment screw 21 from the outside.

Further, on the side surface of the pressing body 18, an arm 6 is provided by opening the movable member 2.
When sliding inside the guide block 13, a cam surface 22 is formed that engages with the protrusion 5 at the tip of the arm 6 to perform a notch function, and when the movable member 2 reaches the fully opened position, the protrusion 5 on the arm 6 Since it moves while colliding with the cam surface 22 of the pressing body 18 and rotates the pressing body 18 against the urging force of the leaf spring 20, the inertia force of the movable member 2 when fully opened resists the urging force of the leaf spring 20. It is absorbed by the rotation of the pressing body 18, and the movable member 2
This prevents the inertial force caused by the full opening from being applied entirely to the stopper 23 formed on the wall surface of the guide block 13, thereby preventing damage to the slide block 13 including the stopper 23 and to the relatively fragile opening/closing angle regulating device. It prevents damage and the attachment part from loosening, and the protrusion 5
Since the protrusion 5 is configured to engage with the cam surface 22 of the pressing body 18 in the closing direction of the movable member 2 at the time when the projection 5 contacts the stopper 23, the upper edge of the movable member 2 as shown in FIG. 30 is used as a hinge to prevent the movable member 2 from closing due to its own weight, and as shown in FIG. The movable member 2 can be stably maintained in the fully open state even when the movable member 2 is in the fully open state, and can be prevented from easily moving even if there is an object on the movable member 2 in the fully open state.

Next, the effects of the present invention will be explained.

In this invention, an arm with a protrusion at the tip is connected to one side of a fixed member and a movable member that is swingably attached to the fixed member in the same direction as the swinging direction of the movable member. a guide block that is swingably attached to the fixed member and the movable member, and the arm is slidably attached to the other of the fixed member and the movable member; and a slide resistance applying device that adjustably applies a frictional force to the slide of the arm with respect to the guide block, for example, a slide resistance comprising a pressing body 18, a leaf spring 20, and an adjusting screw 21. a stopper that engages with the protrusion of the arm to regulate the opening degree of the movable member to a certain angle;
A notch mechanism that absorbs the inertia of the movable member when the movable member is fully open and restricts the swinging of the movable member with a constant force when the movable member is fully open, for example, the protrusion 5 on the arm 6 and the pressing body 1.
The opening/closing angle regulating device is provided with a cam surface 22 formed at 8 and a notch mechanism consisting of a leaf spring 20.

As a result, the present invention has a simple structure, is easy to install, and does not take up much space.Moreover, the opening/closing operation is quiet and smooth, and there is almost no impact even if you let go of your hand during opening/closing, and it is constant. This has the effect of providing an opening/closing angle regulating device that can stably maintain the fully open state of the movable member even when the following external forces are applied.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention in a closed state;
Fig. 2 is a front view showing the guide block 13 in an open state, Fig. 3 is a view taken in the direction of arrow A in Fig. 1, and Fig. 4 shows the open state in Fig. 1 with the lower edge of the movable member as a hinge. FIG. 5 is a front view showing a state in which the movable member is opened using the upper edge as a hinge. 1... Fixed member, 2... Movable member, 3
, 8...Screw, 4゜9...Fixing plate, 5
...Protrusion, 6...Arm, 7...
...Stepped screw, 13...Guide block, 14
...Shaft, 15...Stepped straight groove,
18... Pressing body, 19... Straight groove, 20... Leaf spring, 21... Adjustment screw, 22... Cam surface, 23...stopper, 30...upper edge, 32...lower edge.

Claims (1)

[Scope of utility model registration request] A fixed member and a movable member attached to the fixed member so as to be able to swing therebetween are swinged in the same direction as the swinging direction of the movable member through an arm having a protrusion at its tip. and a guide block to which the arm is slidably attached to the other of the fixed member and the movable member is rotatable via a shaft according to the swing of the arm as the movable member swings. and a slide resistance applying device that adjustably applies frictional force to the slide of the arm with respect to the guide block, and a sliding resistance applying device that engages with a protrusion of the arm to regulate the opening degree of the movable member to a constant angle. and a notch mechanism that absorbs the inertial force of the movable member near the fully open state and restricts the swinging of the movable member with a constant force when the movable member is fully open. Device.