JPH063086B2 - Switchgear - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device for rotatably coupling an exterior member to a machine body, and an opening / closing device in an electric device or the like.

(Background of the Invention) In a copying machine or the like, an opening / closing device is used to rotatably connect an exterior member such as a door to a machine body. However, the opening / closing device generally used conventionally has a large number of parts, There is a problem that the assembly is complicated.

For example, the switchgear shown in FIG. 7 will be described.

In FIG. 7, 21 is a machine body, 22 is a first hinge bearing having a bearing portion at one end, 23 is an exterior member such as a door, 24 is a second hinge bearing having a bearing portion at one end, and 25 is a second one end. A hinge shaft fitted and coupled to the bearing portion of the hinge bearing 24 and loosely coupled to the bearing portion of the first hinge bearing 22 is an E ring fitted to the other end of the hinge shaft 25.

The switchgear shown in FIG. 7 is configured as described above,
The exterior member 23 is rotatably coupled to the machine body 21, but has two hinge bearings, one hinge shaft, and one E ring, and thus has a large number of parts and a hinge shaft. One hinge bearing 24 at one end and the E ring at the other end
Since it is assembled by fitting 26, the assembly is complicated, and the rotation angle cannot be limited to the angle before the exterior member 23 comes into contact with the machine body 21. There is.

In recent years, in copying machines and the like, exterior members such as doors have been attached to the machine body.
There is a demand for the development of a switchgear that has a small number of parts and that can be easily assembled in order to mount it so that it can be opened and rotated by a predetermined angle such as 90 °, but the situation in which there is not enough for practical use has not yet emerged. Is.

(Object of the Invention) The present invention has been developed in view of the above circumstances, and an object thereof is a simple structure, easy assembling, an opening angle limited to a predetermined angle by an opening / closing device, and inexpensive. It is to provide a simple switchgear.

(Structure of the Invention) According to the structure of the present invention, in an opening / closing device that rotatably connects a first member and a second member, the first member protrudes in an L-shape of a hollow frame from the end portion of the first member, A first connecting member having a shape in which a tongue piece having a constant width protrudes from the central portion of the hollow portion on the side of the portion, and a U-shaped hollow portion that projects from the end portion of the second member,
The second coupling member having a shape in which the thickness of the flat plate-shaped portion of the U-shaped root portion is thicker at the boundary than the thickness of the U-shaped portion ahead of the second coupling member is the U-shape of the second coupling member. -Shaped portion is inserted into the hollow portion of the first coupling member and engages with the hollow portion of the first coupling member such that the distal end surface of the first coupling member contacts the curved inner surface of the first coupling member, and the tongue piece of the first coupling member is By engaging the hollowing of the second connecting member, the first member and the second member are joined from the state where the plate surface on the tip side of the first connecting member abuts on the step of the boundary of the second connecting member. Until the plate surface of the tongue of the member comes into contact with the inner surface of the second coupling member on the distal side, the tip surface of the first coupling member is aligned with the inner surface of the U-shaped partial curve of the second coupling member. An opening / closing device, wherein the opening / closing device is coupled so as to be relatively rotatable.

(Example) The present invention will be described in detail based on an example shown in the drawings.

1 is an overall perspective view of a switchgear according to an embodiment of the present invention in a closed state, FIG. 2 is an overall perspective view of a first coupling member, and FIG. 3 is an overall perspective view of a second coupling member. 4 is a sectional view taken along line IV-IV of FIG. 1, FIG. 5 is a plan view of the opening / closing device in an open state, and FIG. 6 is a sectional view taken along line VI-VI of FIG. is there.

The switchgear shown in FIG. 1 includes a first connecting member A provided at an end of a machine body 1 which is a first member, and a first connecting member A provided at an end of an exterior member 2 such as a door which is a second member. The two coupling members B are engaged with each other as shown in the figure to support the exterior member 2 with respect to the machine body 1 so as to be rotatable in the arrow XY directions.

Each constituent member will be described in detail below.

As shown in FIG. 2, the first coupling member A has a pair of first frame 3 and second frame 3'protrudingly provided from the end of the machine body 1 and substantially perpendicular to the end of each frame. An opening H, which is a hollow formed by the U-shaped third frame 4 connected to each other, is provided so as to project from the end of the machine body 1 and between the first frame 3 and the second frame 3 '. And a tongue-shaped convex member 5 which is a tongue piece having a constant width.

As shown in FIG. 3, the second coupling member B has a leg portion 6 which is a flat plate-like portion of a U-shaped root portion provided in a protruding manner from the end portion of the exterior member 2 and a tip end of the leg portion 6. A hook-shaped curved portion 7 that is provided and is a U-shaped portion that is thinner than the leg portion 6, a long hole 8 that is a hollow hole provided along the curved portion 7, and a distal end portion of the leg portion 6. It is provided with a stopper portion 10 which is a step at the boundary of the thickness change provided.

In addition, as shown in FIG. 5, the width of the curved portion 7 is narrower than the inner space between the first frame 3 and the second frame 3 ′ of the first coupling member A, and the long hole 8 is formed.
Is wider than the width of the tongue-shaped convex member 5 of the first coupling member A. Further, the curvature of the curved portion 7 is the same in both the closed state shown in FIG. 4 and the open state shown in FIG.
The long hole 8 and the tongue-shaped convex member 5 of the first coupling member A are set to engage with each other, and the long hole 8 has one end 9 contacting the tongue-shaped convex member 5 as shown in FIG. It is provided in.

The first connecting member A and the second connecting member B are configured as described above, and the second connecting member B is attached to the third frame 4 of the first connecting member A.
By engaging the curved portion 7 of the two, they can be combined to form an opening / closing device as shown in FIG.

In the closed state of the opening / closing device, as shown in FIGS. 1 and 4, the tongue-shaped convex member 5 of the first connecting member A and the second connecting member B are connected.
The second connecting member B is prevented from moving in the direction perpendicular to the plane of the drawing because it is engaged with the elongated hole 8 of the first connecting member A.
Since the third frame 4 and the stopper portion 10 of the second connecting member B contact each other, the second connecting member B is prevented from moving in the arrow Z direction. Therefore, the exterior member 2 is closed with respect to the machine body 1 without moving in the respective directions.

When the closed state shown in FIG. 4 is changed to the open state shown in FIG. 6, since the tongue-shaped convex member 5 of the first connecting member A and the elongated hole 8 of the second connecting member B are always connected, Second coupling member B
Is stably rotated, and in the opened state shown in FIG. 6, one end 9 of the elongated hole 8 contacts the tongue-shaped convex member 5, so that the second coupling member B is regulated to a constant release angle. . Therefore, the exterior member 2 is stably opened, and is opened at a constant angle so as not to open too much.

The switchgear of the present embodiment is configured by only two members, the first connecting member A and the second connecting member B, as described above,
Moreover, the above-mentioned coupling members can be assembled by simply engaging with each other, and the structure and the number of assembling steps can be simplified and the cost can be provided at a low cost as compared with the conventional one.

In addition, in the present embodiment, it is preferable that the tip end surface of the third frame 4 that is in contact with the curved portion 7 of the second coupling member B is formed of a curved surface.

(Effect of the Invention) Since the opening / closing device of the present invention can connect the first connecting member having the opening and the second connecting member having the curved portion without using a hinge shaft as in the conventional device, Not only is the structure and assembly simple, it can be provided at low cost, but the opening angle can be limited to a predetermined angle such as 90 ° by the switchgear.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a switchgear according to an embodiment of the present invention in a closed state, FIGS. 2 and 3 are perspective views of an essential part of FIG. 1, and FIG. 4 is IV- of FIG. A sectional view taken along line IV, FIG. 5 is a plan view of the opening / closing device of FIG. 1 in an open state, FIG. 6 is a sectional view taken along line VI-VI of FIG. 5, and FIG. It is a whole perspective view of an apparatus. DESCRIPTION OF SYMBOLS 1 ... Machine main body, 2 ... Exterior member, 3 ... 1st frame, 3 '... 2nd frame, 4 ... 3rd frame, 5 ... Tongue-shaped convex member, 6 ... Leg part, 7 ... Curved part, 8 ... Long hole , 10 ... Stopper portion, A ... First coupling member, B ... Second coupling member, H ... Opening portion.

Claims (1)

[Claims] 1. An opening / closing device for rotatably coupling a first member and a second member, wherein an L-shaped hollow frame is projected from an end portion of the first member, and the hollow portion on the end portion side is hollowed out. A first coupling member having a shape in which a tongue piece having a constant width is projected from the central portion into the hollow and a U-shaped hollow frame-shaped projecting plate from the end of the second member. A second coupling member having a thickness in which the thickness of the U-shaped portion is thicker at the boundary than the thickness of the U-shaped portion ahead of the second coupling member, and the U-shaped portion of the second coupling member is first on the curved inner surface. The tongue piece of the first coupling member is engaged with the hollow portion of the second coupling member, and is inserted into the hollow portion of the first coupling member so as to bring the front end surface of the coupling member into contact with the hollow portion of the second coupling member. By doing
The plate surface of the tongue piece of the first connecting member is the second connecting member from the state in which the plate surface of the first connecting member and the tip side of the first connecting member abut the step of the boundary of the second connecting member. Of the first coupling member is coupled so as to be relatively rotatable along the U-shaped partial curved inner surface of the second coupling member until it comes into contact with the inner surface of the hollow portion of the second coupling member. Switchgear characterized by that.