KR200253026Y1 - Hinge apparatus for overhead project - Google Patents

Abstract

The main bracket coupled to the main body, and rotatably installed with respect to the main bracket, the support body coupled to the spacer integral nut is screwed at one end and coupled to the lens unit support device at the other end is fixed, and inserted into the rotating shaft and the rotating shaft A rotator fixed to a fixed position by a spacer integrated nut and a rotator fixing nut, and a spring inserted into the rotating shaft slidably and supported by one end and the spacer integrated nut and coupled to one end of the moving shaft and the rotator Disclosed is a hinge device for an overhead project including a lever for controlling rotation of the engine. By allowing the lever to move all the time with respect to the main bracket, no bending occurs under any pressure, so that the guide piece can always slide smoothly in the insertion slot.

Description

Hinge apparatus for overhead project

The present invention relates to a hinge device for an overhead head project (OHP), and more particularly to a hinge device for an overhead project with improved assembly.

In general, an overhead project consists of a main body on which an original is placed and a lens unit unit for receiving light reflected from the original.

Since the overhead projecting shape of the lens unit protrudes from the main body, it is cumbersome for transportation and storage, and it is easy to apply an impact to the lens unit, thereby reducing the volume of the overhead project and reducing the lens unit outside. There is a need for protection from shock.

As such a method, a hinge device in which the lens unit support is pivotable by the locking device is applied to rotate the lens unit support with respect to the main body in contact with the main body to reduce the volume during transport or storage.

Referring to FIG. 1, an example of a hinge device used in such a conventional overhead project is shown.

The main bracket 10 is configured to face each other in a 'c' shape and the bottom surface is fixed to the main body through a screw hole (8). Through holes 5 are formed at both side surfaces of the main bracket 10, and a cylindrical rotating shaft 12 having a receiving space therein is fitted into and fixed.

The nut 26 is screwed to one end of the rotating shaft 12 protruding outside the through hole 5 formed on one side of the main bracket 10, and through the ring 28 inside the through hole 5. Rotator 20 is fixed. The ring 28 is used to adjust the distance between one side of the main bracket 10 and the rotator 20.

At the other end of the rotating shaft 12 protruding outward of the through hole 5 formed on the other side of the main bracket 10, a screw is formed and a support piece 6 coupled to the lens unit support member (not shown) is fixedly installed. .

A moving shaft 14 is inserted into the receiving space inside the rotating shaft 12 to be slidably coupled, and at one end of the moving shaft 14 protruding outside the through hole 5 formed on one side of the main bracket 10. The lever 16 is fixed by the screw 24. In addition, the locking button 4 is coupled to the other end of the moving shaft 14 via the spring (2).

The lever 16 is coupled to one side of the main bracket 10 at both ends, one end of the lever 16 is formed with a restriction piece 18 having a width larger than the width of the lever 16 is the main bracket 10 Coupling with the regulation groove 19 formed in. In addition, a guide piece 17 is formed at the other end of the lever 16 to be slidably coupled to the insertion slot 11 of the main bracket 10.

In addition, the rotator 20 fixed to the rotating shaft 12 is formed with a locking groove 22 is configured to be caught by the guide piece 17.

Looking at the operation of the hinge device of such a configuration as follows.

For example, when storing after use, pressing the locking button 4, the moving shaft 14 is pressed and slides in the rotary shaft 12 to press the lever 16 fixed to one end of the moving shaft 14.

Accordingly, the guide piece 17 formed at the other end of the lever 16 is a locking groove of the rotator 20.

It is detached from the 22 and the rotating shaft 12 becomes a state rotatable.

When the lens unit supporting member is rotated in this state, the rotating shaft 12 can rotate and contact the main body via the supporting piece 6 fixed to the rotating shaft 12.

On the other hand, when it is to be used, when the lens unit support member is rotated to be spaced apart from the main body, the rotator 20 and the guide piece 17 are rotated in contact with the guide piece.

At the moment when the 17 opposes the engaging groove 22 of the rotator 20, the moving shaft 14 is moved by the restoring force of the spring 2, and the lever 16 coupled thereto is moved, thereby guiding the guide piece 17. It is inserted into this locking groove 22, the rotation is stopped and fixed.

However, such a conventional hinge device has some problems.

First, when the locking button is pressed, when the lever is moved by the movement of the moving shaft, as described above, a regulating piece is formed at one end of the lever to catch the regulating groove, but when a large pressure is applied to the locking button, the regulating piece is placed on the regulating groove. In the jammed state, a large pressure is applied to the lever, which eventually causes the lever to bend, thereby causing a problem of failing to slide smoothly in the guide piece and the insertion slot or in severe cases.

In addition, in order to fix the rotator and the support piece to the rotating shaft to be fixed until fully adhered using the adhesive after the insertion, there is a problem that if the fixed to be perpendicular to the rotation axis is not fixed exactly to force the separation and apply the adhesive again. . In particular, since the portion 12a to which the support piece is fixed is likely to be shaken because it is tapered, it is troublesome to fix it securely even after applying the adhesive.

In addition, although the ring is used to adjust the distance between one side of the main bracket and the rotator, there is a problem that it is difficult to precisely adjust the spacing. In addition, the locking button is often released by the elastic force of the spring with use.

Accordingly, the present invention has been devised to solve the above problems, and an object of the present invention is to provide a hinge device for an overhead project that minimizes deformation of the lever when locking or unlocking.

Another object of the present invention is to provide a hinge device for overhead projects with improved assembly workability.

Other objects and features of the present invention will become more apparent through the embodiments described below.

1 is a perspective view showing a conventional hinge device,

Figure 2 is an exploded perspective view showing a hinge device according to the present invention.

According to the present invention, the main bracket is coupled to the main body, rotatably installed relative to the main bracket, the spacer integral nut is screwed on one end and the support piece is coupled to the lens unit support device on the other end is fixed and the rotating shaft through And a rotator fitted to the rotary shaft and fixed at a predetermined position by the spacer integrated nut and the rotator fixing nut, and a spring-loaded movable shaft and the movable shaft slidably inserted into the rotary shaft and supported by one end and the spacer integrated nut. A hinge device for an overhead project is disclosed that includes a lever coupled to one end and controlling a rotation of a rotator.

Preferably, a step is formed at one end of the rotating shaft to form a threaded portion having a first diameter and a threaded portion having a second diameter larger than the first diameter, and a spacer-integrated nut is screwed to the threaded portion having the first diameter, and the threaded portion has a second diameter. Rotator fixing nut is screwed on.

Further, grooves are formed along the circumference of the outer surface of the rotating shaft, and the ring stopper is fitted in the grooves.

In addition, the other end of the rotating shaft is formed with a jaw portion, the screw portion extending from the jaw portion, the jaw portion is provided with a straight portion, the support piece is formed with a straight portion to match the straight portion of the jaw portion and the nut is fitted to the screw portion is fixed to the support piece.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2 is an exploded perspective view showing a hinge device according to an embodiment of the present invention.

As shown, the main bracket 100, as in the conventional hinge device, is configured to face each other in the 'c' shape and the bottom surface is fixed to the body (not shown) through the screw hole 104. Through holes 102 and 102 'are formed at both sides of the main bracket 100.

The rotating shaft 120 has a cylindrical shape having an accommodating space therein, and a step is formed at one end thereof to form a screw 122 having a first diameter and a screw 124 having a second diameter. In addition, a screw 127 is formed at the other end, and the jaw portion 128 to which the support piece 129 coupled with the lens unit support member is fixed is formed.

According to the present invention, the jaw portion 128 is provided with a straight portion corresponding to the support piece

Temporary fixing is also easy by providing the straight portion 129, and in this state, the screw (not shown) can be screwed to the screw 127 to firmly fix the support piece 129. Therefore, there is an advantage that workability is improved by not using an adhesive unlike the conventional art.

Moreover, grooves 126 are formed along the circumference of the outer surface of the rotation shaft 120 to a predetermined depth so that the ring stopper 190 is fitted.

From the through hole 102 of the main bracket 100 in a state in which the rotator fixing nut 160 is screwed to the screw portion 124 of the second diameter and the rotator 130 having a locking groove 132 is formed at a portion of the edge thereof. The rotating shaft 120 is fitted. Then, the spacer-integrated nut 150 according to the present invention from the outside of the through hole 102 ′ is coupled to the first diameter screw portion 122 of the rotation shaft 120. The spacer integrated nut 150 may maintain a constant gap between the main bracket 100 and the rotator 130 by forming the spacer 152 integrally with the nut.

In addition, since the rotator 130 is firmly fixed by the rotator fixing nut 160 and the spacer integrated nut 150, the assembly workability is greatly improved since there is no need to use an adhesive as in the prior art.

The moving shaft 110 slidably inserted into the inner receiving space of the rotating shaft 120 is formed with a step at one end to support one side of the spring 170 and is inserted from the other end of the rotating shaft 120. At this time, one end of the moving shaft 110 is coupled using the lever 140 and the screw 112. The other end of the moving shaft 110 is a locking button (not shown) is screwed.

The lever 140 is coupled to one side of the main bracket 100 at both ends. Unlike the related art, one end of the lever 140 is configured to be the same as the width of the lever 140 so as not to form a separate restriction piece. Guided by grooves 108. Therefore, even if the lever 140 is pressed by the moving shaft 110 by the movement, the entire lever 140 moves simultaneously, so that the lever 140 itself does not bend. In addition, a guide piece 142 is formed at the other end of the lever 140 so as to be slidably coupled to the insertion slot 106 of the main bracket 100, and as described above, the rotator 130 fixed to the rotation shaft 120. It is configured to be caught in the engaging groove 132 formed in).

Preferably, the flow preventing pieces 180 and 182 may be further fitted to the rear of the spacer integrated nut 150 and the front of the ring stopper 190, respectively.

Looking at the operation of the hinge device of the present invention of such a configuration as follows.

For example, when storing after use, pressing the locking button (not shown), the spring 170 is fitted to one end of the moving shaft 110 is pressed and the pressing force is transmitted to the lever 140 to move the lever 140 Thus, the guide piece 142 of the lever 140 is a rotator

The rotation shaft 120 is rotatable from the locking groove 132 of the 130.

When the lens unit support member is rotated in this state, the support piece fixed to the rotating shaft 120

The rotation shaft 120 may rotate and contact the main body via the 129.

On the other hand, in use, when the lens unit support member is rotated to be spaced apart from the main body, the rotator 130 and the guide piece 142 are rotated in contact with each other, and the guide piece 142 is the locking groove 132 of the rotator 130. ), The moving shaft 110 is moved by the restoring force of the spring 170 and the lever 140 coupled thereto is moved so that the guide piece 142 is fitted into the locking groove 132 so that the rotation is stopped. It is fixed at an angle.

In the above described the center of the preferred embodiment of the present invention, various changes are possible at the level of those skilled in the art. For example, the main bracket may not be configured in a 'c' shape, but may be configured in another shape or directly contact the rotator without forming an insertion slot. In addition, the rotator may be fixed to the moving shaft outside the through hole, and a protrusion may be formed on one side of the main bracket to be locked by the protrusion. All of these modifications are inferred from the features of the present invention and will belong to the present invention as long as the basic features are the same.

In addition, although the overhead project has been described as an example, the present invention may be applied to a physical imager having a similar structure.

As described above, the present invention has various advantages.

First, since the lever is always moved as a whole relative to the main bracket, no bending occurs under any pressure, and accordingly, the guide piece can always slide smoothly in the insertion slot.

In addition, unlike the prior art, it is not necessary to temporarily fix the rotator and the support piece, and in particular, workability is improved because no adhesive is used, and there is an advantage that it can be fixed to be always perpendicularly perpendicular to the rotation axis.

Moreover, there is an advantage in that the workability is excellent and the constant distance is always maintained by using the spacer integrated nut to adjust the distance between one side of the main bracket and the rotator.

In addition, since both ends of the spring are supported by the stepped portion formed at one end of the moving shaft and the spacer integral nut, the locking button coupled to the other end of the moving shaft does not occur at all.

Claims (5)

In the hinge device for rotatably coupling the lens unit support member of the overhead project with respect to the main body, A main bracket coupled to the main body; A rotating shaft installed rotatably with respect to the main bracket and having a spacer integral nut screwed at one end thereof, and a support piece coupled to the lens unit support member at the other end thereof, and having a penetrating inside thereof; A rotator fitted to the rotation shaft and fixed at a predetermined position by the spacer integrated nut and the rotator fixing nut; A movable shaft slidably inserted into the rotation shaft and having a spring inserted therein and supported by the spacer integrated nut; And And a lever coupled to one end of the moving shaft to control rotation of the rotator. The method of claim 1, wherein a step is formed at one end of the rotating shaft to form a screw portion having a first diameter and a screw portion having a second diameter larger than the first diameter, and the spacer integral nut is screwed to the screw portion having the first diameter. And the rotator fixing nut is screwed to the screw portion of the second diameter. The hinge device for an overhead project according to claim 1, wherein a groove is formed along a circumference of an outer surface of the rotation shaft, and a ring stopper is fitted to the groove. According to claim 1, wherein the other end of the rotating shaft is formed with a jaw portion, the screw portion is formed extending from the jaw portion, the jaw portion is provided with a straight portion and the support piece is formed with a straight portion to match the straight portion of the jaw portion and the screw portion A hinge device for an overhead project, characterized in that the nut is fitted to fix the support piece. The hinge device of claim 1, wherein one end of the lever is guided by a guide groove of the main bracket, and the other end slides into an insertion slot of the main bracket.