JPH0844918A - Operation recorder - Google Patents

Abstract

PURPOSE:To facilitate time adjustment and the operability of replacement of chart paper by storing the chart paper in a cartridge and loading the cartridge in a main body. CONSTITUTION:A main body 1 has a lid 3 on its front panel 2; when the lid 3 is opened, a cartridge loading/unloading opening 7 is open and when the cartridge 40 is housed, the cartridge is housed detachably by a cartridge loading/unloading mechanism. The cartridge 40 has a thin box type housing and is fitted with a lid which is opened at right angles to the surface of the housing. This lid is opened and the chart paper 50 is set on the shaft at the center part. The shaft at the center part is rotated by rotating a gear and the current time of the chart paper 50 set on the shaft can be set. Further, a switch is pressed in the stage of the loading of the cartridge 40 into the main body 1, and the shutter is opened, so that an internal gear can engages a timer mechanism in the main body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation recorder for recording information such as traveling speed and traveling distance of an automobile on recording paper.

[0002]

2. Description of the Related Art Large trucks, buses, taxis and the like must be equipped with an operation recorder for recording vehicle information such as traveling speed and traveling distance according to regulations. The above-mentioned operation recorder is usually configured in a cylindrical shape with a speedometer and an odometer on the front surface, so that a circular chart paper can be mounted inside in parallel with a dial such as a speedometer. Has become.

In the operation recorder, a lid is rotatably attached to a main body case containing a circuit board and the like by a hinge, and the chart paper can be attached and detached by opening the lid. Is configured.

However, since the conventional operation recorder has a structure in which a circular chart paper is arranged in parallel with a dial such as a speedometer, the outer diameter is made smaller than the chart paper. Therefore, the outer diameter was large in the up-down direction. Therefore, the outer diameter of the operation recorder affects the size of other instruments, for example, the outer diameter of the engine tachometer, depending on the design balance, which makes the design around the instrument panel novel. This resulted in less freedom.

Also, since the driver's seat of a large vehicle such as a large truck and a bus is at a high position, the large vehicle should be mounted on the instrument panel with the dial of the operation recorder slightly inclined forward from the vertical state. But you can
For small cars such as ordinary passenger cars, the driver's seat is low, and in order to secure the front-back dimension of the car and improve the habitability, the operation recorder is installed horizontally, that is, the dial is installed vertically and attached to the instrument panel. There is. For this reason, in a small car, the vertical dimension of the instrument panel becomes long, so the depression angle from the driver's seat becomes small, and the field of view becomes narrow, so there is the inconvenience of safety and drivability.

Therefore, in order to solve the above-mentioned inconvenience, the applicant of the present invention can improve the safety and drivability in Japanese Patent Application No. 5-50489 and design the instrument panel around. We are proposing a box-shaped operation recorder that allows flexibility. The operation recorder has a structure in which the tray on which the chart paper is attached pops out to the front by operation.

[0007]

However, even in the case of this recorder, the chart paper must be replaced in an uncomfortable posture such as extending the arm or directing the body toward the operation recorder. I won't. Also, when the operation recorder is installed in a console box, etc., the current instrument panel around the instrument panel has an upward angle, and the tray part of the operation recorder pops out in the direction perpendicular to that angle. , When I try to set the time on the chart paper, I have to look into it.

If the operation recorder is set on the overhead console, the replacement of the chart paper and the time adjustment become very difficult. Also, if any force is applied to the tray part from above while the tray part is protruding from the main body, the tray part will be distorted, and the tray part cannot be stored in the main body. May damage the tray section.

It is an object of the present invention to provide an operation recorder which has a thin main body, can easily set chart paper, and can easily set the time.

[0010]

An operation recorder according to the present invention has a cartridge for accommodating a chart paper and a cartridge attaching / detaching mechanism for detachably accommodating the cartridge, and rotates the chart paper in the cartridge. It is characterized by comprising a main body provided with a clock mechanism and a recording mechanism for recording vehicle information on the chart paper.

Further, in the operation recorder according to the present invention, the cartridge has a shaft for setting the chart paper in the central portion, and the cartridge is rotated by engaging with the shaft to set the chart paper. In addition to having a gear for setting the time, it has a lid on the surface that opens and closes when attaching and detaching chart paper, and when it is attached to the main body, it engages with the cartridge attachment / detachment mechanism of the main body to open and And a shutter that exposes the engaged gear portion.

Further, in the operation recorder according to the present invention, the main body is formed in a substantially box shape, has a cartridge attaching / detaching port at a front portion thereof, and has a cartridge attaching / detaching mechanism inside thereof. Second and third chassis are provided, the first chassis is located at an upper part and is biased forward, the third chassis is located at a lower part and is biased forward, and the second chassis is located in a middle part. It is characterized in that it is located and contains a cartridge.

Further, the operation recorder of the present invention has an eject button for ejecting the cartridge, which is in contact with the first chassis, on the front surface of the main body, and the inside of the main body is provided with:
When the eject button is pushed, the first chassis is held at the rear position, and the holding mechanism that constitutes the cartridge attaching / detaching mechanism that releases the holding of the third chassis held at the rear position and advances the cartridge is provided. It is characterized by that.

In this case, the third chassis has a cartridge engaging pin and a holding mechanism engaging protrusion, and when the cartridge is housed in the second chassis, the cartridge engages with the cartridge engaging pin. Together, the third chassis is pushed to the rear position, the shutter of the cartridge is opened by the projection, and the holding mechanism engaging projection engages with the holding mechanism to release the holding of the first chassis to move the front. To eject the eject button.

The second chassis is attached to the first chassis.
Has an engaging means for engaging a protrusion provided on a side surface of the chassis, and the engaging means sets the second chassis to a lower position when the first chassis is held at the rear position. Then, when the holding mechanism releases the holding of the rear position of the first chassis and the first chassis moves forward, the second chassis is raised and the recording paper of the recording mechanism contacts the chart paper in the cartridge. It is accessible.

[0016]

Since the present invention is constructed as described above, in order to set the chart paper on the cartridge, first open the lid of the cartridge and tighten the lid through the central hole of the chart paper through the shaft at the center of the cartridge. , Turn the time setting gear to set the current time on the chart paper.

Next, the cartridge is pushed inward from the cartridge attaching / detaching port of the main body. The cartridge slides in the second chassis and advances rearward, engages with the cartridge engaging pin of the third chassis midway, and resists the urging force of the third chassis urged forward of the main body. When the cartridge is pushed backward, the shutter of the cartridge is opened by this pin, and the gear portion that engages with the timepiece mechanism of the main body is exposed.

On the other hand, the holding mechanism engaging projection of the third chassis pushed backward releases the holding state of the holding mechanism which holds the rear position of the first chassis provided on the main body. Since the first chassis is biased forward, it is moved forward by releasing the holding mechanism. The first chassis has the engaging means for engaging with the protrusion provided on the side surface of the second chassis, so that when the first chassis moves to the front position, the second chassis is operated by the engaging means. The chassis of (1) is raised, and the cartridge in the second chassis is also raised, so that the recording paper of the recording mechanism provided in the main body can come into contact with the chart paper in the cartridge. Further, at that time, the gear exposed at the open shutter of the cartridge engages with the clock mechanism in the main body, and the chart paper starts to rotate by the clock mechanism.

By mounting the cartridge, the first
When the chassis moves to the front position, the eject button on the front surface of the main body, which is engaged with the first chassis, projects.
To eject the cartridge, push in the eject button. When the eject button is pushed in, the first chassis is pushed backward, and when it reaches the rear position, the holding mechanism holds the first chassis in the rear position. When the first chassis moves rearward, the second chassis is lowered by the engaging means, the cartridge in the second chassis is naturally lowered, and the recording needle of the recording mechanism is moved from the chart paper in the cartridge. Leave.

Further, when the holding mechanism is in a state of holding the first chassis in the rear position, the holding mechanism engaging protrusion of the third chassis engaged with the holding mechanism is disengaged, and the third chassis is biased. Move to the front of the body. At that time, the third
Since the cartridge engaging pin of the chassis pushes the cartridge, part of the cartridge pops out from the cartridge attaching / detaching port of the main body. After that, pull out the cartridge from the main body by hand, replace the chart paper and adjust the time if necessary.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the operation recorder according to the present invention. Reference numeral 1 is a main body of the operation recorder formed in a substantially box shape, and 40 is a cartridge for accommodating a chart paper 50. As shown in the figure, the main body 1 has a front panel 2, and the front panel 2 has a key front 4 for opening and closing a lid 3, a changeover switch 5 for changing over the driver, and a cartridge 40 for taking out. The eject button 6 is provided, and when the lid 3 is opened, the cartridge attaching / detaching port 7 is opened, and the cartridge 4 is inserted through the cartridge attaching / detaching port 7.
0 is attached and detached. The main body 1 has a width of 180 mm, a height of 50 mm, and a depth of 1.
It is 70 mm, which is the same size as a car radio.

The cartridge 40 has a plan view of FIG. 2A, a side view of FIG. 2B, a front view of FIG.
As shown in detail in the bottom view of FIG.
And a shaft 42 is provided at the center of the housing 41. Further, a lid 43 is attached to the upper surface of the housing 41, and the lid 43 is rotated by a hinge 41a provided on the side surface of the housing 41, and as shown in FIG. It can be opened substantially at a right angle to the surface of 41. A handle 43a is formed on the lid 43, and the handle 43a is grasped and pulled by a hand.
Can be opened.

The lid 43 is opened and the chart paper 50 is set on the shaft 42 in the central portion. An opening 41 b is provided on the upper surface of the housing 41, and the set chart paper 50 is set.
A part of it is exposed. Further, a gear 44 is arranged in a protruding state on the left side of the front surface of the housing 41,
The gear is engaged with the shaft 42 via a gear train inside the housing 41, and the shaft 44 is rotated by turning the gear 44 by hand, and the present chart paper 50 set on the shaft 42 is present. The time can be set.

The left and right sides of the bottom surface of the housing 41 are shown in FIG.
As shown in (d), each groove 41c is formed, and a switch 45 is housed in one of the grooves 41c, and when the switch 45 is pushed inward as shown by an arrow, FIG. The shutter 46 shown in is opened in the direction of the arrow, and the gears arranged inside are exposed. The action of pushing the switch 45 is to push the cartridge 40 into the main body 1 of the operation recorder.
The shutter 46 is opened so that the internal gear engages with the timepiece mechanism in the main body 1.

Next, the internal structure of the main body 1 of the operation recorder will be described. FIG. 3 shows a side view of the main body 1. In this figure, the case that covers the upper surface and the side surface of the main body 1 and the recording mechanism for recording the vehicle information on the chart paper are not shown, and the cartridge 40 is not mounted. .

As shown in the figure, a main plate 9 is provided inside the main body 1.
0 is provided, and the main plate 90 is supported and fixed by the front panel 2 and the bottom plate 8. Below the main plate 90, the first chassis 60 and the second chassis 7 are arranged in order.
0 and the third chassis 80 are arranged.

As shown in FIG. 4, the first chassis 60 is formed of an iron plate whose central portion is cut into a U shape, and cutouts 61 are provided on the left and right front portions, respectively. Also, keyhole-shaped holes 62 are provided on the left and right sides of the rear part, respectively. Utilizing the notches 61 and the holes 62, the first chassis 60 is slidably attached to a ground plate (not shown) by bolts 63.

Further, one end of a spring 64 is attached to each of the right and left sides of the central portion of the first chassis 60, and the other end of the spring 64 is attached to a ground plate (not shown). It is biased forward, that is, in the direction of the front panel 2. Further, a pin 65 is provided on the side surface of the first chassis so as to project laterally, and the pin 65 is provided by the arm 101 of the holding mechanism 100 attached to the main plate 90 as shown in FIG. Is held.

The holding mechanism 100 comprises a fixed portion 102 and a substantially V-shaped arm 101 rotatably attached to a shaft 103 of the fixed portion 102. The fixed portion 102 is a main plate 90.
The arm 101 is biased to rotate upward about the shaft 103 as shown by the arrow. Further, a hole 104 is formed in a part of the arm 101.

By holding the pin 65 by the arm 101 of the holding mechanism 100, the first chassis 60 is held in the rear position even though it is biased forward. This state is created by pressing the eject button 6 for taking out the cartridge mounted inside. Before the eject button 6 is pushed in, the cartridge is mounted, and as shown in FIG. 6, the pin 65 of the first chassis 60 is in contact with the tip of the arm 101 of the holding mechanism 100. When the eject button 6 is pushed in, the first chassis 60 is pushed backward, so that the pin 65 is held by the arm 101.

Next, the second chassis 70 will be described. The second chassis 70 is made of an iron plate and is formed into a substantially tray shape. As shown in FIG.
Three b and 71c (71c is not shown) are arranged horizontally. The central protrusion 71b is sandwiched between two-fork-shaped restricting members 95 fixed to the main plate 90,
Therefore, the movement of the second chassis 70 in the front-rear direction is restricted.

Further, square side plates (corresponding to the engaging means of the present invention) are provided on both sides of the side surface of the first chassis 60.
Two 66 are provided for each (only one is shown), and a cut 67 is formed in the side plate 66 in a substantially oblique direction, and the projection 71a of the second chassis 70 is fitted into the cut 67. Have been combined.

Therefore, when the eject button 6 is pressed, the first
When the chassis 60 of the second is pushed backward, the second chassis 7
Since the movement of 0 in the front-rear direction is regulated by the regulation member 95, the protrusion 71a is guided to the notch 67 of the side plate 66 of the first chassis 60 and goes down to move the first chassis 6
When 0 is held in the rear position by the holding mechanism 100, the second chassis 70 stops.

Incidentally, FIG. 4 is a plan view in which the main plate 90 is ignored, and the two protrusions 72 provided at the rear end of the second chassis in the figure are stoppers for mounting the cartridge. Further, reference numeral 110 in the drawing denotes a timepiece mechanism, which meshes with a gear in the shutter 46 of the cartridge 40 in which the protruding gear 111 is mounted to rotate the chart paper.

Next, the third chassis 80 will be described. The third chassis 80 is also made of an iron plate, and the second
It is installed in close contact with the lower side of the chassis 70 of FIG.
As shown in FIG. 5, the protruding piece 73 formed on the second chassis 80 is fitted into the hole 81 of the third chassis 80, and movement in the lateral direction and the vertical direction is restricted. Further, one end of a spring 82 is attached to the central portion of the third chassis 80, and the other end of the spring 82 is attached to the second chassis 7.
It is attached to 0. Then, the third chassis 80 is biased by the spring 82 in the front direction, that is, in the direction of the front panel 2.

Further, cartridge engaging pins 83 are provided at the left and right centers of the third chassis 80, and the cartridge engaging pins 83 are provided upright vertically upward. Further, a protruding portion 84 is formed on one side surface of the third chassis 80, and the protruding portion 84 is formed.
A holding mechanism engaging projection 85 is attached to the tip of the above in an upward direction. In FIG. 5, the second chassis 7
Although 0 is actually visible, it is confusing, so it is shown by a virtual line.

Actually, the cartridge 40 is mounted on the front panel 2
When inserted from the cartridge attaching / detaching port 7 (see FIG. 1),
When the end surface of the groove 41c (see FIG. 2) on the back surface of the cartridge 40 comes into contact with the cartridge engaging pin 83 and the cartridge 40 is further pushed in, the third chassis 80 is pushed by the cartridge 40 and resists the biasing force of the spring 82. And move backwards. At this time, the holding mechanism engaging projection 8 of the third chassis 80 enters the hole 104 of the arm 101 of the holding mechanism 100 holding the first chassis 60 at the rear position, and the arm 101 resists the urging force. Since the pin 65 of the first chassis 60 is disengaged from the arm 101, the first chassis 60 moves forward and the pin 65 contacts the tip of the arm 101, as shown in FIG.

The protrusion 71a provided on the side surface of the first chassis 60 has a notch 67 in the side plate 66 of the first chassis 60.
Since the first chassis 60 moves forward, the protrusion 71a is guided by the notch 67, so that the second chassis 70 moves upward. The second chassis 70 cannot move in the front-rear direction because the protrusion 71b at the center of the side surface of the second chassis 70 is restricted from moving in the front-rear direction by the restricting member 95 provided on the base plate 90.

When the second chassis 70 rises, the cartridge 40 mounted inside also rises as a unit, and the chart paper 50 accommodated in the cartridge 40 can come into contact with the recording needle of the recording mechanism described later. Will be set to the position. Of course, the cartridge 40 is facing upward, and the chart paper 50 is the case 41 of the cartridge 40.
The recording needle of the recording mechanism is exposed from the opening portion 41b of the base plate 90, and the recording needle of the recording mechanism and the U of the first chassis 60 are not shown.
The chart paper 50 is abutted via the letter-shaped notch. Note that FIG. 7 shows a state in which the cartridge 40 is mounted, and is a plan view with respect to the side view of FIG. 6, and FIG. 8 is a bottom view. In this case, the base plate 90, the bottom plate 8 and the cartridge 40 are disregarded in the drawing.

Next, the recording mechanism will be described. FIG. 9 shows an example of the recording mechanism. Note that FIG. 9 is shown by inverting the vertical direction. In FIG. 9, 1
Reference numeral 1 denotes a motor, and a gear 12 is attached to a shaft 11a. 13 is a gear train for transmitting the power of the gear 12, 14
Is a direction changing gear that meshes with the final gear of the gear train 13, 15
A and 15B are drive gears that mesh with the direction changing gear 14, the drive gear 15A rotates the recording needle lifting cam 16A, and the drive gear 15B is the recording needle lifting cam 16B.
Is to rotate.

Reference numerals 17A and 17B are L-shaped swinging rods which are swung around a fulcrum O by a recording needle lifting cam 16A.
Reference numeral 17C is an L-shaped swing rod that is swung about a fulcrum O by a recording needle lifting cam 16B, and 18A, 18B, 18.
C indicates a recording needle which is lowered (upward in FIG. 9) by the corresponding swing rods 17A, 17B, 17C.

Locking pieces 19A, 19B and 19C are fitted in the central portions of the respective recording needles 18A, 18B and 18C, and these locking pieces 19A, 19B and 19C and the recording needle 1 are provided.
Frames 20A, 20B supporting 8A, 18B, 18C,
Coil springs 30A, 30B, 30 between 20C and
C is arranged to urge the recording needles 18A, 18B, 18C to the lowered position (the rising direction in FIG. 9).

The locking pieces 19A, 19B, 19C are also provided.
The projections 17A _a , 17B _b , 17C _c of the swing rods 17A, 17B, 17C are in contact with the upper side surface of the swing rods 17A, 17B, 17C, and the end portions of the swing rods 17A, 17B, 17C have coil springs 30A, 30B, The recording lifting / lowering cams 16A and 16B are in contact with the surfaces of the recording lifting / lowering cams 16A by the biasing force of 30C.

The recording needle 18A is for distance recording,
The recording needle 18B is for alternate recording, and the recording needle 18C is for speed recording. Further, the recording needle drive mechanism for moving the recording needles 18A, 18B and 18C in the radial direction of the recording paper C is the same as that of the conventional one, and the description thereof will be omitted.

Next, the operation of the recording mechanism will be described.
When the recording needles 18A, 18B, and 18C are raised, the motor 11 is controlled based on the output of the lock detection mechanism (not shown) that detects the mounting of the cartridge 40, so that the recording needle lift cam 16A. , 16B is approximately 1
Rotate 80 degrees. Therefore, the swing rods 17A, 17B, 1
7C is rotated and the protrusions 17A _a , 17B _b , 17C _c are lowered, so that the recording needles 18A, 18B, 18C are lowered by the urging force of the coil springs 30A, 30B, 30C (in the drawing, ascending direction), and the chart paper Abut 50 faces.
Therefore, various information is recorded on the recording needles 18A, 18B, 18C.
Can be recorded on the recording paper C.

When the cartridge 40 is mounted and the recording needles 18A, 18B and 18C are in contact with the surface of the chart paper 50, the key is inserted into the front key 4 of the main body 1 and rotated clockwise. The motor 11 is controlled based on the output of the lock detection mechanism that detects that the cartridge 40 has been unlocked. Therefore, the recording needle raising / lowering cams 16A, 16B are further rotated by about 180 degrees to return to the original state, and the coil springs 19A, 19B are thus returned.
Recording needle 18 descending due to the urging force of B and 19C
A, 18B, 18C are coil springs 19A, 19
Swing rods 17A, 17B, 1 against the biasing forces of B, 19C
It rises by the force of 7C and separates from the recording surface of the chart paper 50.

Next, when the eject button 6 is pushed in, as shown in FIG. 3, the first chassis 60 is pushed in and the side pins 65 are held by the holding mechanism 100, and the arm 101 of the holding mechanism 100 is held. Due to the rotation, the holding mechanism engagement protrusion 85 of the third chassis 80 is disengaged, and the third chassis 80 advances to push the cartridge 40 out from the cartridge attaching / detaching port 7 of the front panel 2. The pushed cartridge 40 is pulled out by hand, the necessary chart paper 50 is set, and the time is adjusted.

It is needless to say that the recording needle raising / lowering mechanism and the raising / lowering mechanism are merely examples, and other structures having the same functions may be used.

As described above, in the operation recorder according to the present embodiment, the chart paper 50 can be exchanged and the time of the chart paper 50 can be adjusted by the operator by making the portion for setting the chart paper 50 into a cartridge. Therefore, the chart paper 50 can be replaced easily and smoothly.

[0050]

As described above, according to the present invention,
Since the chart paper is stored in the cartridge and the cartridge is attached to the main body, the chart paper can be replaced at hand, the time can be easily adjusted, and the replacement workability is improved. Further, since the chart paper is stored in the cartridge, the degree of freedom of the mounting location of the operation recorder main body on the vehicle is dramatically improved.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of an operation recorder according to the present invention.

2A and 2B show a cartridge, FIG. 2A is a plan view, and FIG.
Is a side view, (c) is a front view, and (d) is a bottom view.

FIG. 3 is a side view of the operation recorder main body, showing a state in which a cartridge is not mounted.

FIG. 4 is a plan view of the operation recorder main body showing a state in which a cartridge is not mounted.

FIG. 5 is a bottom view of the operation recorder main body, showing a state in which the cartridge is not mounted.

FIG. 6 is a side view of the operation recorder main body, showing a state in which a cartridge is mounted.

FIG. 7 is a plan view of the operation recorder main body showing a state in which a cartridge is mounted.

FIG. 8 is a bottom view of the operation recorder main body, showing a state in which a cartridge is mounted.

FIG. 9 is a perspective view of a recording mechanism used in the operation recorder according to the present embodiment.

[Explanation of symbols]

 1 Main Body 2 Front Panel 3 Lid 4 Lock 5 Changeover Switch 6 Eject Button 7 Cartridge Removable Port 40 Cartridge 41 Case 42 Shaft 43 Lid 44 Gear 46 Shutter 50 Chart Paper 60 1st Chassis 64 Spring 65 Pin 66 Side Plate (Engaging Means) 67 notch 70 second chassis 71a projection 71b projection 80 third chassis 82 spring 83 cartridge engaging pin 85 holding mechanism engaging projection 90 base plate 95 regulating member 100 holding mechanism 110 clock mechanism

Claims (6)

[Claims] 1. A cartridge for accommodating a chart paper, a cartridge attaching / detaching mechanism for detachably accommodating the cartridge, a clock mechanism for rotating the chart paper in the cartridge, and a recording for recording vehicle information on the chart paper. An operation recorder, comprising a main body having a mechanism. 2. The cartridge has a shaft for setting chart paper in the center, and a gear for engaging with the shaft and rotating to set the time of the set chart paper, and having a surface on the surface. It is provided with a lid that opens and closes when the chart paper is attached and detached, and further has a shutter that exposes a gear part that engages with the cartridge attachment / detachment mechanism of the main body when the chart paper is attached The operation recorder according to claim 1, wherein 3. The main body is formed in a substantially box shape, has a cartridge attaching / detaching port in a front portion, and internally includes first, second, and third chassis forming the cartridge attaching / detaching mechanism,
And the first chassis is located at the top and is biased forward,
2. The operation recorder according to claim 1, wherein the third chassis is located in a lower portion and is biased forward, and the second chassis is located in a middle portion and has a structure for accommodating a cartridge. 4. The cartridge has an eject button on the front surface of the main body, which is in contact with the first chassis, and the first chassis is in a rear position when the eject button is pushed inside the main body. While holding
The operation recorder according to claim 1 or 3, further comprising a holding mechanism that forms a part of the cartridge attaching / detaching mechanism that releases the holding of the third chassis held at the rear position and advances the third chassis. . 5. The third chassis has a cartridge engaging pin and a holding mechanism engaging protrusion, and when the cartridge is housed in the second chassis, the cartridge engages with the cartridge engaging pin. And pushes the third chassis to the rear position, the pin opens the shutter of the cartridge, and the retainer engaging protrusion engages with the holding mechanism to release the holding of the first chassis and move it forward. The operation recorder according to claim 3 or 4, wherein the eject button is projected. 6. The first chassis has engaging means for engaging a protrusion provided on a side surface of the second chassis, and the engaging means includes a first chassis at a rear position. When held, the second chassis is set to the lower position, and when the holding mechanism releases the holding of the rear position of the first chassis and the first chassis moves forward, the second chassis is raised. The operation recorder according to any one of claims 3 to 5, wherein the recording needle of the recording mechanism can be brought into contact with the chart paper in the cartridge.