JP2552363Y2 - Chart cassette mounting device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chart cassette mounting device, and more particularly to an improvement in a detachable operation unit.

[0002]

2. Description of the Related Art A recorder includes a storage section for storing unused recording paper, a sprocket wheel for winding a part of the recording paper to feed the recording paper, and a storage section for storing recorded recording paper. There is an integrated chart cassette configured to be detachable from a recorder main body.

FIGS. 3A and 3B are explanatory diagrams showing an example of such a conventional chart cassette mounting apparatus, wherein FIG. 3A is a side view, FIG. 3B is a front view, and FIG. FIG. In the drawing, reference numeral 1 denotes a chart cassette, on which a storage section 2 for storing unused recording paper is formed, and a sprocket wheel 3 on which a part of the recording paper is wound to feed the recording paper is rotatable. And a storage section 4 for storing recorded recording paper is formed in the lower part. A latch lever 5 is rotatably mounted on a side surface of the chart cassette 1 via a shaft 6. An engaging portion 7 is formed at one end of the latch lever 5 and an operating portion 8 is formed at the other end, and the operating portion 8 is urged counterclockwise by a spring 9. Reference numeral 10 denotes a mounting shaft for mounting the chart cassette 1 to the inner unit 11.
The mounting shaft 10 is engaged with a groove 13 formed near the upper portion of the side plate 12 of the inner unit 11. A latch pin 14 with which the engaging portion 7 of the latch lever 5 engages is attached near the lower portion of the side plate 12 of the inner unit 11.

In such a configuration, when the chart cassette 1 is to be mounted on the inner unit 11, the mounting shaft 10 is fitted into the groove 13 and inserted to the back, and the lower part of the chart cassette 1 is pushed in. As a result, the engaging portion 7 of the latch lever 5 causes the latch pin 1 to resist the urging of the spring 9.
4 and engages with the latch pin 14. When the chart cassette 1 is to be removed from the inner unit 11, the operating section 8 is pressed down against the bias of the spring 9 to release the engagement between the engaging section 7 and the latch pin 14, and pull it out toward the user.

[0005]

However, such a configuration has the following problems. The latch mechanism consists of a latch lever 5, a spring 9, and a latch pin 1.
4, the number of parts increases and the number of assembling steps is increased. When the latch mechanism is provided on only one side of the chart cassette 1 and the chart cassette 1 is attached to the inner unit 11, if the width of the chart cassette 1 is wide, twisting may occur, and the latch mechanisms must be provided on both sides. .

When a latch mechanism is provided on both sides of the chart cassette 1, the chart cassette 1 is
Since the chart cassette 1 and the inner unit 11 are supported at four points, namely, the zero, the groove 13 and the left and right latch mechanisms, it is difficult to align the chart cassette 1 and the inner unit 11 with each other. It is desirable to increase the width of the latch mechanism in order to obtain a stable latching operation. However, since the latch mechanism is provided on the side of the chart cassette 1, the width of the inner unit must be increased in order to increase the width of the latch mechanism. It is not preferable from the viewpoint of high-density mounting.

The present invention has been made to solve these problems, and an object of the present invention is to realize a chart cassette mounting apparatus capable of obtaining a stable latch operation with a relatively simple structure.

[0008]

According to the present invention, there is provided a storage section for storing unused recording paper, a sprocket wheel for winding a part of the recording paper to feed the recording paper, and a recording medium. In a chart cassette mounting apparatus for detachably mounting a chart cassette integrated with a storage unit for storing completed recording paper to an inner unit via a latch mechanism, the latch mechanism is provided at a center of a front surface of a bottom surface of the inner unit. An engagement member provided in the vicinity, an engagement portion formed at one end to engage the engagement member, a spring portion for urging the engagement portion in the direction of the engagement member, and And a latch member rotatably attached to the lower portion of the front surface of the chart cassette such that the operating portion protrudes from the front surface.

[0009]

When the chart cassette is attached to the inner unit, the engaging portion of the latch member is urged toward the engaging member by the spring portion and is engaged with the engaging member. In this state,
Since the latch is performed only at a substantially central position, there is no risk of twisting, and the alignment condition between the chart cassette and the inner unit can be greatly eased.

To remove the chart cassette attached to the inner unit, the operating portion projecting from the lower front surface of the chart cassette is operated in a direction opposite to the bias of the spring portion, so that the latch member and the engaging member are separated. Release the engaged state.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1A and 1B are explanatory views showing the configuration of an embodiment of the present invention, wherein FIG. 1A is a side view, FIG. 1B is a front view, FIG. 2 is an explanatory view of a main part of FIG. 4 are given the same reference numerals.

In the drawing, a latch pin 23 functioning as an engaging member is provided via mounting pieces 21 and 22 near the center of the front surface of the bottom surface of the inner unit 11. On the other hand, a latch member 24 is rotatably attached to the lower part of the front surface of the chart cassette 1. That is, an engaging portion 25 is formed at one end of the latch member 24 so as to engage with the engaging member 23, and a spring portion 26 for urging the engaging portion 25 in the direction of the engaging member 23 is provided at an intermediate portion. 27 and chart cassette 1
A stopper portion 28 is formed in contact with the bottom surface, and an operation portion 29 is formed at the other end, and these are integrally formed of synthetic resin. Then, the latch member 24 configured as described above is rotated by the attachment pieces 31 and 32 provided on the bottom surface of the chart cassette 1 via the attachment shaft 30 so that the operation unit 29 projects from the front surface of the chart cassette 1. Mounted as possible.

In such a configuration, the latch member 24
Is always urged in the counterclockwise direction A by the spring portions 26 and 27 so that the engagement portion 25 faces the bottom surface of the inner unit 11 and the stopper portion 28 contacts the bottom surface of the chart cassette 1. When the chart cassette 1 is to be mounted on the inner unit 11, the mounting shaft 10 is fitted into the groove 13 and inserted into the inner part, and the lower part of the chart cassette 1 is pushed in. Thereby, the engaging portion 25 of the latch member 24 rides over the latch pin 23 against the bias of the spring portions 26 and 27 and engages with the latch pin 23.

When the chart cassette 1 is to be removed from the inner unit 11, the operating portion 29 is pushed down in the clockwise direction B against the bias of the spring portions 26 and 27 so that the engaging portion 25 and the latch pin 2 are pressed.
3 is disengaged. As a result, the chart cassette 1 is rotated to the front side by the balance of the center of gravity of the shape around the mounting shaft 10, and can be easily pulled out and removed from the groove 13.

With this configuration, the spring members 26 and 27 are also integrated with the latch member 24, so that the number of parts can be reduced and the assembly can be performed easily. In addition, since the latch mechanism is provided substantially at the center of the front surface of the chart cassette 1 and the inner unit 11, the width of the latch mechanism is increased without increasing the width of the chart cassette 1 and the inner unit 11, thereby achieving a stable latch state. As a result, there is no possibility that the chart cassette 1 is twisted.

Further, since the chart cassette 1 is supported at three points, that is, the left and right mounting shafts 10, the groove 13, and the central latch mechanism, the positioning between the chart cassette 1 and the inner unit 11 becomes easy, and the design and assembly are performed. The accuracy required for adjustment and the like can be reduced. Therefore, it is necessary to devise measures such as providing play in the latch mechanism. In addition, since the latch mechanism is provided substantially at the center of the front surface of the chart cassette 1 and the inner unit 11, the width direction can be used effectively, which is effective for high-density mounting.

Note that, instead of the latch pin functioning as an engaging member, a protrusion that functions to swing may be provided on the bottom surface of the inner unit 11.

[0018]

[Effects of the Invention] As described above, according to the present invention,
A chart cassette mounting device that can achieve a stable latch operation with a relatively simple configuration can be realized.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory view showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a main part of FIG. 1;

FIG. 3 is a configuration explanatory view showing an example of a conventional chart cassette mounting device.

FIG. 4 is an explanatory diagram of a main part of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chart cassette 10, 30 Mounting shaft 11 Inner unit 13 Groove 21, 22, 31, 32 Mounting piece 23 Latch pin 24 Latch member (engagement member) 25 Engagement part 26, 27 Spring part 29 Operation part

Claims (1)

(57) [Scope of request for utility model registration] 1. A chart in which a storage part for storing unused recording paper, a sprocket wheel for winding a part of the recording paper to feed the recording paper, and a storage part for storing the recorded recording paper are integrated. A chart cassette mounting device for detachably mounting a cassette to an inner unit via a latch mechanism, wherein the latch mechanism includes an engaging member provided near a center of a front surface of a bottom surface of the inner unit, and an engaging member at one end. An engagement portion formed to engage;
A spring portion for urging the engaging portion in the direction of the engaging member and an operating portion formed at the other end are integrated, and the operating portion is protruded from the front surface and pivots to the lower front portion of the chart cassette. A chart cassette mounting apparatus, comprising: a latch member movably mounted.