JPH0749384Y2 - Pen lift device for pen writing recorder - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a pen writing recorder for recording predetermined data on a chart by cooperation of movement of a pen and movement of a chart feed mechanism. The present invention relates to a pen lift device that contacts and separates.

[Conventional technology]

In this type of pen recorder, if the chart holding roller is moved while the tip of the pen is in contact with the chart surface when the chart holding roller is moved to replace the chart, the tip of the pen will move. It is necessary to separate the pen from the chart surface because it may be damaged or the chart may be soiled. For this reason, conventionally, a pen lift device for contacting or separating the tip of the pen with the chart surface is provided. In the conventional pen lift device, the chart lift roller is moved after manually lifting the pen lifter to separate the tip of the pen from the chart.

[Problems to be solved by the device]

However, since such a conventional pen lift device lifts the pen lifter manually as described above, the pen may be damaged or the chart may become dirty due to neglected operation of the pen lifter or insufficient pen lift. There is a risk of

Further, there has been proposed a device in which the pen is separated from the chart in conjunction with the movement operation of the chart holding roller, but there is a problem that the structure is complicated and high accuracy is required, so that it cannot be provided at a low cost.

The present invention has been made in view of the above points, and a pen writing recorder capable of automatically separating the pen from the chart surface in synchronization with the movement of the chart holding roller with a simple structure. An object is to provide a pen lift device.

[Means for Solving the Problems]

In order to achieve such an object, according to the present invention, both end shafts of the chart holding roller are rotatably supported by the free ends of the roller arms whose lower ends are swingably supported on the left and right side plates. A pen lifter pivotally supported on the side plate side to form an inclined surface for engaging the both end shafts to rock the pen lifter by rocking the roller arm, and between the side plate side and the pen lifter. A pen member is linked with a spring member which is interposed and which selectively locks the pen lifter at two positions, a pen setting position and a pen pushing position, by crossing a dead point in the middle by swinging the pen lifter. A pen arm that swings in conjunction with the swing of the pen lifter is provided, and a pen whose tip is brought into contact with and separated from the chart on the chart holding roller at the free end portion of the pen arm by the swing of the pen arm. It was supported.

[Action]

When the chart holding roller is moved to the front side for chart replacement or the like, the pen lifter pivots against the elastic force of the spring member due to the action of the end shaft and the inclined surface of the pen lifter.
Since the pen arm is swung via the link, the tip of the pen is automatically jumped up so as to be separated from the chart in conjunction with the movement operation of the chart holding roller. When the spring member crosses the dead center, the pen lifter urged by the spring force rotates to separate the pen from the chart. When the pen lifter is manually rotated after the charts have been exchanged and the chart holding roller has been swung in, the spring member crosses the dead point and the spring force causes the pen lifter to rotate and the tip of the pen to contact the chart. .

〔Example〕

1 and 2 show an embodiment of a pen lift device for a pen writing recorder according to the present invention. FIG. 1 is a perspective view thereof, and FIG. 2 is a side view thereof. In the figure, a pair of left and right roller arms 3 is swingably supported by a shaft 4 on both side plates 2 of a pen writing recorder 1, and a shaft hole provided at a free end of the roller arm 3 has a shaft hole. The chart holding roller 5 has end shafts 5a on both sides thereof rotatably supported. Reference numeral 6 is a chart held on the peripheral surface of the chart holding roller 5. The side plates 2 on both sides are provided with notches 2a. By swinging the roller arm 3, the chart holding roller 5 engages the end shaft 5a with the notches 2a as shown by the arrow in the figure. The swinging position is moved between the swinging position and the swinging position where the end shaft 5a extends from the notch 2a, and is fixed at the moving position.

On the other hand, a guide rod 7 is provided obliquely above the chart holding roller 5 so as to be fixed to the left and right side plates 2, and a pair of left and right pen arms 8 is rotatable with respect to the guide rod 7 and advances and retracts in the axial direction. The pen cartridge 9, which is freely supported and fixed to the free end portion of the pen arm 8, is provided with a pen 10 whose tip is detachably brought into contact with the chart 6. By doing so, the chart holding roller 5 is rotated while the tip of the pen 10 is in contact with the chart 6, and the pen arm 8 is moved back and forth in the axial direction, whereby predetermined data is recorded on the chart 6 by writing with a pen. Is configured to.

A pin 11 is located behind the chart holding roller 5 and screwed to the side plate 2 on one side.
The pen lifter 12 extending horizontally along the operation end 12c
Is exposed to the front of the side plate 2 and is pivotally supported so as to be swingable. The pen lifter 12 is provided at its free end with inclined surfaces 12a and 12b that engage with the end shaft 5a of the chart holding roller 5. There is. Numeral 13 is a torsion spring provided above the chart holding roller 5, each fixing portion 13a, 13b of which is fixed to the side plate 2 and the pen lifter 12, respectively. Set the torsion spring 13 to the side plate 2
By rotating the side fixing portion 13b as a center, the torsion spring 13 crosses the dead center on the way, and the pen lifter 12 is selectively locked at two positions, a pen setting position and a pen pushing position. ing. That is, the torsion spring 13
In the state shown by the solid line in FIG. 2, since the pen lifter side fixing portion 13b is located below the straight line connecting the side plate side fixing portion 13a and the pin 11, the pen lifter 12 is given a habit of clockwise rotation. The pen lifter 12 is locked at the pen setting position, and when the chart holding roller 5 is pulled out between the side plates as shown in FIG. 1, the pen lifter side fixing portion 13b is shown as shown by the chain double-dashed line in FIG. Since the pen lifter 12 is moved above the straight line connecting the side plate side fixing portion 13a and the pin 11, the pen lifter 12 is imparted with a counterclockwise turning habit, and the pen lifter 12 is locked at the pen pushing position.

Further, the other end of the link 14, which is pivotally attached to the pen lifter 12 at one end, is pivotally attached to the side plate 2 at the other end.
A plate 1 on the side of the pen arm 8 is attached to a notch 15a that is pivotally attached to the free end of the arm 15 and is provided in the base end of the arm 15.
6 is engaged. By doing this, Chart 1
When the pen lifter 12 rotates counterclockwise in FIG. 2 so that the end shaft 5a of the holding roller 5 crosses the inclined surface 12a, the arm 15 rotates counterclockwise via the link 14 in conjunction with this movement. The tip of the pen 10 is separated from the chart 6 by the engagement of the notch 15a and the plate 16 and the rotation of the pen arm 8.

The operation of the pen writing recorder configured as above will be described. In the operating state in which the end shaft 5a of the chart holding roller 5 is engaged with the notch 2a, as shown in FIG.
Since the front end of the chart contacts the chart 6, the chart holding roller 5 is rotated and the pen arm 8 is moved back and forth in the axial direction, whereby predetermined data is recorded on the chart 6 by writing with a pen.

When replacing the chart 6, pull the chart holding roller 5 forward so that the end shaft 5a comes out of the notch 2a and swing it out as shown in FIG.
By pushing up the inclined surface 12a, the pen lifter 12a rotates and the pen lifter side fixing portion 13b of the torsion spring 13 crosses the dead point above the straight line connecting the side plate side fixing portion 13a and the pin 11 until the dead point is exceeded. After the pen lifter 12 which has been biased by the clockwise rotation force of FIG. 2 has passed the dead center, it is biased by the counterclockwise rotation force of FIG. As a result,
Since the link 14 rises and the arm 15 rotates, the notch 15
The arm 15 is connected to the pen arm 8 by the engagement of a with the plate 16.
The rotation of the pen 10 is regulated with the tip of the pen 10 integral therewith separated from the chart 6. That is,
During the swing-out operation of the chart holding roller 5, the tip of the pen 10 is separated from the chart 6 in conjunction with this operation, and the end shaft 5a
Even after passing the inclined surface 12a, the pen lifter 12 is urged to rotate counterclockwise in FIG. 2 by the elastic force of the torsion spring 13, and the pen 10 moves through the link 14 and the arm 16.
Is separated from the chart 6, the tip of the pen 10 is not damaged.

After replacing the chart 6, when pushing the chart holding roller 5 so that the end shaft 5a engages with the notch 2a and swings it in,
Since the pen 10 is separated from the chart 6 during the feeding operation, the tip of the pen 10 is not damaged or the chart 6 is not soiled. After this, the operation end of the pen lifter 12
When 12c is rotated downward and rotated clockwise in FIG. 2, the pen lifter side fixing portion 13b of the torsion spring 13 again crosses the dead point below the straight line connecting the side plate side fixing portion 13a and the pin 11. After that, the pen lifter 12 is urged to rotate clockwise in FIG. 2, so that the pen 10 is pressed against the chart 6 via the link 14 and the arm 16.

Also, when the chart holding roller 5 is swung from the swung-out state, if the pen 10 is descending, the end shaft 5a pushes the inclined surface 12b so that the pen lifter 12 moves to the second position. As it rotates counterclockwise in the figure, the torsion spring 13 crosses the dead center and urges the pen lifter 12 to rotate in the counterclockwise direction in FIG. 2, so that the tip of the pen 10 is damaged or the chart 6 becomes dirty. There is nothing to do.

[Effect of device]

As will be apparent from the above description, according to the present invention, in the pen lift device of the pen writing recorder, both ends of the chart holding roller are attached to the free ends of the roller arms whose lower ends are swingably supported to the left and right side plates. The shaft is pivotally supported, and the rear end of the pen lifter pivotally supported on the side plate side is engaged with the both end shafts to form an inclined surface for rocking the pen lifter by rocking the roller arm. A spring member which is interposed between the side plate side and the pen lifter and which selectively locks the pen lifter in two positions, a pen setting position and a pen pushing position, by moving the pen lifter over a dead center in the middle of swinging. , A pen arm that is linked to the pen lifter by a link and swings in conjunction with the swing of the pen lifter, and the free end portion of the pen arm is provided with a tip end by swinging the pen arm. By supporting the pen that comes in contact with and separates from the chart on the roller holding roller, if the chart holding roller is moved during chart replacement, etc., the tip of the pen will automatically move during this moving operation in conjunction with this operation. Since the pen is separated from the chart, it is possible to separate the pen from the chart without failing to neglect to separate the pen from the chart surface as in the past, and the tip of the pen is not damaged and durability is improved. As well as improving, the consumption of consumables is reduced without damaging the chart. Further, the structure is simple and the device can be provided at a low cost.

[Brief description of drawings]

1 and 2 show an embodiment of a pen lift device for a pen writing recorder according to the present invention. FIG. 1 is a perspective view thereof, and FIG. 2 is a side view thereof. 1 ... pen writing recorder, 3 ... roller arm, 5 ... chart holding roller, 5a ... end shaft, 8 ... pen arm, 10
...... Pen, 12 …… Pen lifter, 12a, 12b …… Sloping surface, 13
...... Torsion spring, 14 …… link, 15 …… arm.

Claims (1)

[Scope of utility model registration request] 1. A pair of roller arms whose lower ends are swingably supported on the left and right side plates, a chart holding roller having both end shafts axially supported by free ends of the roller arms, and a rear end. A pen lifter pivotally supported on the side plate side, an inclined surface formed on the pen lifter by engaging the both end shafts to rock the pen lifter by rocking the roller arm, and the side plate side. A spring member which is interposed between the pen lifter and a pen lifter and which selectively locks the pen lifter at two positions, a pen setting position and a pen pushing position, when the pen lifter swings over a dead center in the middle; A pen arm connected by a link and swinging in conjunction with the pen lifter, and a chart whose tip is held by the chart holding roller by the swinging movement of the pen arm supported by the free end of the pen arm. Penrifuto device Pen recorder, characterized in that a and Pen and away.