JPH0720986Y2 - facsimile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a facsimile that transmits or receives a text or the like using, for example, a telephone line. More specifically, when the heat-sensitive roll paper is replaced, the upper case is set on the horizontal axis. The present invention relates to an opening / closing mechanism for the upper case in a facsimile of a type that opens upward as a fulcrum.

<Prior Art> Conventionally, in the above-mentioned type of facsimile, a lock mechanism for holding the upper case in the closed position is provided,
By releasing this lock with a knob, the upper case is opened upward.

<Problems to be solved by the invention> By the way, since the upper case is relatively heavy due to the weight of the attached members such as the recording head and the bracket in addition to the weight of the upper case itself, a spring for always urging upward is incorporated into the upper case. It is preferable that the upper case naturally lifts upward when the lock is released. However, if the spring force is increased, a reliable opening operation can be obtained,
When the lock is released, the upper case is suddenly opened to reach the top dead center, and the impact may adversely affect electronic components such as a telephone operation unit attached to the upper case and the recording head.
On the contrary, if the spring force is weakened, there is a problem that the maintenance of the opening posture is unstable and the opening operation is inaccurate.

The present invention mainly aims to solve the above problems by a simple mechanism.

<Means for Solving the Problem> In order to achieve the above object, in the facsimile machine according to the present invention, in the facsimile machine formed by opening and closing the upper case about a pivot as a fulcrum to replace the heat-sensitive roll paper, A hinge bracket fixed to the main body case, a hinge arm pivotally supported by the hinge bracket so as to be rotatable by a certain angle via the pivot shaft and supporting the upper case, and the hinge arm is always biased in the opening direction. A spring, and the engaging protrusion is sequentially engaged with one of the adjacent surfaces of the hinge arm and the hinge bracket, and the engaging protrusion is sequentially engaged with the other surface of the upper case by the spring force. A first engaging concave portion that holds the openable half-open position and a second engaging concave portion that holds the upper case in the fully open position that can be manually opened only from the half-open position are provided. In addition, a lock device for locking the upper case at the closed position and a knob for unlocking the lock are provided.

<Operation> In the facsimile machine constructed as described above, when the upper case 3 is unlocked by the knob 27 from the posture in which the upper case 3 is closed, the upper case 3 is lifted upward by the spring 20 attached to the hinge arm 19. This upward rotation is stopped by the engagement protrusion 21 provided on the hinge arm 19 being fitted into the first engagement recess 22 of the hinge bracket 18. After that, the upper case 3 is further lifted by hand to engage the engaging convex portion 21 with the second engaging concave portion 23 to stably maintain the open posture.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings.

1 and 2, reference numeral 1 denotes a facsimile machine according to the present invention, in which an upper case 3 is formed with respect to a main body case 2 so that it can be opened and closed with a pivot 4 as a fulcrum. The upper case 3 is provided with a telephone operation section 5, a manuscript paper insertion slot 6, a thermal roll remaining amount confirmation window 7, and the like.

Further, a document sheet discharge port 8 is formed between the rear end edge of the upper case 3 and the main body case, and a heat-sensitive roll paper feed port 9 is formed between the front end edge of the upper case 3 and the main body case 2. There is.

Further, a handset 10 is installed together with a holder 11 on the left side of the main body case 2.

Further, as shown in FIG. 2, inside the main body case 2, there are provided an image reader 12 for reading a document sheet inserted through the document sheet insertion port 6 and a delivery roller 13 for delivering the document sheet through the discharge port 8. Further provided is a roll paper support portion 15 for holding the heat sensitive roll paper 14, and a platen roller 16 for delivering the heat sensitive roll paper 14 from the delivery port 9.
Are provided respectively. And this platen roller 16
A recording head on the lower surface of the upper case 3 on the upper side opposite to
17 is attached via a head bracket 17a.

Further, as shown in FIGS. 3 to 6, a hinge bracket 18 is fixed to the main body case 2, and a hinge arm 19 is pivotally attached to the hinge bracket 18 so as to be rotatable by a predetermined angle via the pivot shaft 4. The upper case 3 is supported by the hinge arm 19. Also, this hinge arm
19 is constantly urged in the opening direction by a spring 20. Furthermore, one of the adjacent surfaces of the hinge arm 19 and the hinge bracket 18, for example, the hinge arm 19 is provided with a hemispherical engaging convex portion 21, and the engaging convex portion is elastically engaged. First engaging recess 22 and second engaging recess
23 is provided on the adjacent surface of the hinge bracket 18. The first engagement recess 22 is formed at the lower end edge of the hinge bracket 18, and the second engagement recess 23 is formed slightly above it by a through hole.

Further, in order to lock the upper case 3 in the closed position, a lock mechanism B as shown in FIGS. 7 and 8 is provided and a lock mechanism B as shown in FIGS. 7 and 8 is provided. The lock mechanism B includes a pair of left and right hooks 25 and 25 rotatably supported by a side wall portion of the main body case 2 via a pivot 25a. The hooks 25 and 25 are formed at both ends of the head bracket 17a. The engaging pins 26, 26 are engaged with each other. A knob 27 is provided at the front right corner of the body case 2 to release the engagement between the hook 25 and the engagement pin 26. The knob 27 is rotatably supported by the main body case 2 via a vertical pivot 27a. Also, the knob 27
Is formed in conformity with the outer surface of the main body case so as to form a part of the outer contour of the main body case 2 in its outer surface shape. Then, the hook 25 is urged in a direction in which the hook 25 engages with the pin 26 by a spring 28 attached to the vertical axis 27a, and the knob 27 is urged against the spring 28 by a seventh force.
By pushing and rotating in the direction of the arrow in the figure, the one end portion 27b of the knob 27 presses the contact piece 25b of the hook 25 to swing the hook 25 and release the engagement with the engagement pin 26. Has become.

In the above configuration, when the upper case 3 is unlocked by the knob 27 from the posture in which the upper case 3 is closed, the upper case 3 is lifted upward by the spring 20 attached to the hinge arm 19. This upward rotation is stopped by the engagement protrusion 21 provided on the hinge arm 19 being fitted into the first engagement recess 22 of the hinge bracket 18. After that, the upper case 3 is further lifted by hand so that the engaging convex portion 21 is moved to the second engaging concave portion 23.
To hold the open posture in a stable manner. By doing so, the spring 20 is engaged with the engaging protrusion 21.
Needs to have a force to lift the upper case 3 to a position where it engages with the first engaging recessed portion 22, in other words, since the spring does not hold the open position of the upper case, a spring having a relatively weak spring force is used. It can be used, and by doing so, it is possible to reduce the impact and the like at the time of opening and prevent adverse effects on the electronic components attached to the upper case.

<Effects of the Invention> As described in detail above, the present invention supports a hinge bracket fixed to a main body case, and a hinge bracket that is pivotally supported on the hinge bracket through a pivot for a predetermined angle and supports the upper case. A hinge arm and a spring for urging the hinge arm in the opening direction at all times are included, and an engaging protrusion is provided on one of adjacent surfaces of the hinge arm and the hinge bracket, and the engaging protrusion is provided on the other surface. First engaging recess for holding the upper case in a half-open position where the upper case can be released by the spring force, and a second engaging recess for holding the upper case in a fully open position where the upper case can be manually released only from the half-open position. And a lock device for locking the upper case in the closed position and a knob for unlocking the lock. Therefore, when the lock is released by the knob, the upper case is released. The spring 20 for lifting 3 has to have a force enough to lift the engaging convex portion 21 to the position where the engaging convex portion 21 engages with the first engaging concave portion 22, in other words, the spring holds the open position of the upper case. It is possible to use a spring with a comparatively weak spring force, which can reduce the impact at the time of opening and prevent adverse effects on the electronic parts attached to the upper case. , The open position of the upper case is the second engaging recess
The engagement convex portion 21 is engaged with the engagement portion 23, so that the heat-sensitive roll paper can be stably held, and the heat-sensitive roll paper can be easily replaced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a facsimile in which a knob according to the present invention is implemented, and FIG. 2 is a partial cross-sectional side view showing a state in which an upper case is lifted, and FIGS. FIG. 5 is a side view showing the hinge bracket and the hinge arm, showing the operation thereof in sequence. FIG. 6 is a sectional view taken along the line AA in FIG. 5, and FIG. FIG. 8 is a transverse sectional view of a facsimile machine according to the present invention, FIG. 8 is an exploded perspective view of a lock mechanism portion, and FIG. 9 is a vertical sectional view of the facsimile machine. 1 ... Facsimile, 2 ... Main body case, 3 ... Upper case, 4 ... Axis, 18 ... Hinge bracket, 19 ... Hinge arm, 20 ... Spring, 21 ... Engaging protrusion, 22 ...
First engagement recess, 23 ... Second engagement recess, B ... Lock mechanism, 27 ... Knob

Claims (1)

[Scope of utility model registration request] 1. A facsimile machine in which a thermal roll paper is exchanged by opening and closing an upper case with a pivot as a fulcrum, and a hinge bracket fixed to a main body case and a fixed angle to the hinge bracket via the pivot. A hinge arm that is rotatably supported and that supports the upper case, and a spring that normally urges the hinge arm in the opening direction are provided, and one of the adjacent surfaces of the hinge arm and the hinge bracket is provided. A first engaging concave portion for holding the upper case in a half-open position in which the engagement convex section is sequentially engaged with the other surface to hold the upper case in the half-open position by the spring force, and the upper case is manually operated from the half-open position. A second engaging concave portion that holds only the fully opened position that can be opened, and a lock mechanism that locks the upper case at the closed position and the lock are released. Facsimile that Runobu is provided.