JP3085442B2 - Recording paper drive system structure of operation recorder cartridge - Google Patents

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 a traveling speed and a traveling distance of an automobile on recording paper, and more particularly, to a cartridge type for inserting and removing a cartridge containing recording paper therein from and into a main body. Related to the operation recorder.

[0002]

2. Description of the Related Art As an operation recorder for recording information such as a traveling speed and a traveling distance of a vehicle, a so-called round operation recorder in which instruments such as a speedometer and an odometer are integrally accommodated has been widely used. in use. This operation recorder includes a main body attached to an instrument panel and the like, and a case supported by the main body so as to be openable and closable. The case includes a rotary table on which recording paper is set. A clock mechanism that rotationally drives the rotary table, a power transmission gear mechanism that transmits the power of the clock mechanism to the rotary table, and the like are housed therein as a drive system for the recording paper on the rotary table.

[0003] The recording paper on the rotary table is rotated with the passage of time by the power transmitted from a clock mechanism in the case via a power transmission gear mechanism. Information is recorded on the recording paper.

In this type of operation recorder, backlash in the power transmission gear mechanism is eliminated as much as possible, the time difference until the power of the clock mechanism is transmitted to the rotary table is reduced, and the information recording location on the recording paper is reduced. In order to reduce the time lag, an anti-backlash gear is provided in the drive system, and the anti-backlash gear is applied to, for example, a gear of a rotary table in a rotational direction opposite to a normal rotational direction of the rotary table. Are engaged. Further, in this type of operation recorder, in order to adjust the recording paper on the rotary table to a position corresponding to the current time, the driving system includes:
For example, an operation gear that also functions as a knob for adjusting the time is provided beside the case, and the rotation of the operation gear is transmitted to the power transmission gear mechanism.

[0005] By the way, the round operation recorder is usually attached to an instrument panel in front of a driver's seat together with other instruments such as a tachometer. Since it is necessary to determine the size of other instruments in consideration of the balance of the size of the instrument, the size of the instrument panel and the arrangement of the instruments are fixed, so there is little freedom to make the design fresh. turn into.

Accordingly, the applicant of the present invention has proposed, as shown in FIG. 5, a box-shaped cartridge 11 in which recording paper 21 for recording information is stored horizontally, and a cartridge provided on the front panel 2 of the main body 1. In a state of being housed in the main body 1 through the insertion / removal opening 7, information is recorded on the information recording surface of the recording paper 21 by a recording needle (not shown) disposed at a position inside the main body 1 above the recording paper 21. Eject button 6 on front panel 2
The cartridge type operation recorder in which the cartridge 11 in the main body 1 is discharged to the outside of the main body 1 through the cartridge insertion / removal opening 7 by pressing is proposed earlier. In order to propose an operation recorder of the cartridge 11 type, the present applicant initially considered that the drive system adopted in the conventional round operation recorder would be used as it is in the cartridge 11. Was.

FIG. 6 is a plan view showing the internal structure of the housing of the cartridge containing the drive system, and FIG. 7A is an enlarged side view showing, in particular, a power transmission gear mechanism in the drive system. FIG. 7B is an enlarged side view of a portion of the drive system, particularly from the operation gear to the power transmission gear mechanism.

In FIG. 6, reference numeral 12 denotes a housing of the cartridge 11, A denotes a driving system housed in the housing 12, and 14 denotes a rotating unit rotated by the driving system A in FIG. Reference numeral 14a denotes a rotary shaft protruding from the upper surface of the rotary table 14, respectively. FIG. 7 (a)
The inside 13 is a cover for opening and closing an opening (not shown) for the recording paper 21 in the housing 12, a reference numeral 13 a is a recording paper 21 window formed on the lid 13 for checking the current time, and a reference numeral 13 b is the lid 13. And a pressing ring B for pressing the recording paper 21 against the rotary table 14 in a state where the lid 13 is closed and B is the housing 12.
2 shows a support plate of the drive system A disposed therein.

The drive system A includes, as shown in FIG. 7A, a gear 14b integrally formed on the lower surface of the rotary table 14 and, as shown in FIG.
A clock mechanism 50 for rotating the gear with time, a main gear mechanism 30 for transmitting power from the clock mechanism 50 to the gear 14b, a backlash prevention gear 35 for eliminating backlash in the main gear mechanism 30, Operation gear 4 for adjusting the time of the recording paper 21 on the rotary table 14
0, and a branch gear mechanism 45 for transmitting the rotation of the operation gear 40 to the main gear mechanism 30.

[0010] As shown in FIG.
It has a power output rotor 50a. As shown in FIGS. 6 and 7A, the main gear mechanism 30 includes a plurality of gear groups provided between the rotor 50a and the gear 14b of the rotary table 14, and the backlash prevention gear 35 is , Is meshed with a gear 14 b of the rotary table 14.

FIG. 8A is a plan view showing the internal structure of the anti-backlash gear, and FIG. 8B is a sectional view of the same. As shown in FIG. 8A, the backlash prevention gear 35 has a shaft 35a having both ends fixed to the housing 12 and the support plate B, respectively, and is rotatable about the shaft 35a and immovable in the axial direction. Gear body 35b combined and formed with a tooth surface on the outer periphery
As shown in FIG. 8 (b), there is provided a spring 35d housed in a recess 35c of the gear body 35b and wound around the shaft 35a, and one end of the spring 35d is attached to the shaft 35a. Have been.

The anti-backlash gear 35 is shown in FIG.
(A) By rotating the gear body 35b in the winding direction of the mainspring 35d indicated by the arrow a in the middle of FIG.
The gear body 35b is configured to be urged in the direction shown by the arrow A in FIG. 8A by the repulsive force in the direction in which the winding is loosened. In the drive system A shown in FIG. 6, the gear 14b of the rotary table 14 is urged clockwise as indicated by an arrow C in FIG. Thus, a predetermined backlash prevention torque determined by the mainspring 35d is applied to the rotary table 14.

The operating gear 40 is, as shown in FIG.
A part of the housing 12 projects outward and is exposed to the outside, so that it can be rotated by hand. As shown in FIGS. 6 and 7B, the branch gear mechanism 45 includes:
The branch gear mechanism 45 is composed of a plurality of gear groups connected to the operation gear 40.
0 is meshed with the converging gear 31.

In order to prevent the power from the clock mechanism 50 from being transmitted to the rotary table 14 and to prevent the rotation of the operation gear 40 from being transmitted only to the rotary table 14 and not to the clock mechanism 50, As shown in an enlarged side view in FIG. 9, a shaft 31a and a first
And a so-called slip ring having a second small-diameter gear 31b, 31c, a large-diameter gear 31d, a friction spring 31e, and the like.

Both ends of a shaft 31a of the joining gear 31 are rotatably supported by the housing 12, and a substantially middle portion of the shaft 31a is rotatably supported by the support plate B. The first small diameter gear 31b is fixed to one end of the shaft 31a, and is meshed with a gear 46 in the branch gear mechanism 45 as shown in FIG. 7B. As shown in FIG. 9, the second small-diameter gear 31c is connected to the shaft 31 on the opposite side of the support plate B from the first small-diameter gear 31b.
6 and 7 are fixed to a position near the other end of FIG.
As shown in (a), in the main gear mechanism 30, a gear 32 adjacent to the turntable 14 with respect to the merging gear 31 is used.
Are engaged.

As shown in FIG. 9, the large-diameter gear 31d is mounted on a shaft 31a between the support plate B and the second small-diameter gear 31c so as to be axially movable and rotatable. As shown in FIG. 7A, in the main gear mechanism 30, the adjacent gear 33 on the clock mechanism 50 side with respect to the joining gear 31.
Are engaged.

FIGS. 10A and 10B are a plan view and a side view of the friction spring. The friction spring 31
As shown in FIG. 10 (a), e is a base 31g in which a substantially keyhole-shaped shaft insertion hole 31f is formed, and is inclined in a direction shifted by about 120 ° from the base 31g. It has three extending legs 31h.

The friction spring 31e is connected to the second
Before the small-diameter gear 31c is fixed, the shaft 31a is inserted from the other end into the front end of the small-diameter long hole portion of the shaft insertion hole 31f and fitted, and the base 31g around the front end of the long hole portion is fitted. Then, the large-diameter gear 31d is loosely mounted on the shaft 31a from the other end side, and the second small-diameter gear 31c is finally fixed, so that the tip of each leg 31h has a large diameter. The base 31g is attached so as to elastically contact the end face of the gear 31d and the support plate B.

In the merging gear 31, the support plate B and the friction spring 3 are provided on one of the first and second small-diameter gears 31b and 31c and the large-diameter gear 31d.
1e, the static torque between the friction spring 31e and the large diameter gear 31d, the static torque between the end faces of the large diameter gear 31d and the second small diameter gear 31c, and the large diameter gear 3
When a torque equal to or less than the maximum torque among the four static torques of the static torque between 1d and the shaft 31a is applied, the torque is received by the merge gear 31. Therefore, in this case, torque is not transmitted from the one gear side to the other gear side, and neither gear side rotates.

In the merging gear 31, the support plate B and the friction spring 31 are provided on one of the first and second small diameter gears 31b and 31c and the large diameter gear 31d.
e, the static torque between the friction spring 31e and the large diameter gear 31d, the static torque between the large diameter gear 31d and the end face of the second small diameter gear 31c, and the large diameter gear 31
When a torque exceeding the maximum torque among the four static torques of the static torque between the shaft d and the shaft 31a is applied, the torque is transmitted from the one gear side to the other gear side, whereby the other gear side The following operation is performed according to the content of the torque applied to the motor.

First, the torque applied to the other gear side is a rotational torque in the same direction as the torque transmitted from the one gear side via the joining gear 31, or the torque transmitted from the one gear side. If the rotational torque is opposite to the torque and is equal to or less than the transmission torque, or if the static torque is equal to or less than the transmission torque from the one gear side, between the support plate B and the friction spring 31e, , The space between the friction spring 31e and the large-diameter gear 31d idles, and the other gear rotates together with the one gear. Next, the torque acting on the other gear side is a rotational torque in a direction opposite to the transmission torque from the one gear side and exceeding the transmission torque, or When the static torque exceeds the transmission torque, the gap between the end faces of the large-diameter gear 31d and the second small-diameter gear 31c and the gap between the large-diameter gear 31d and the shaft 31a idle, and the other gear does not rotate.

Therefore, in the drive system A, the backlash prevention torque is transmitted to the rotor 50a, and the operation of the operation gear 40 causes the turntable 14 to rotate.
Moreover, in order to prevent the rotor 50a of the timepiece mechanism 50 from rotating by the operation of the operation gear 40, the maximum static torque, the backlash prevention torque,
The rotational operation torque of the operation gear 40 and the rotor 50
The following relationship is established between the static torques a. (1) Maximum static torque of the joining gear 31 <backlash prevention torque (2) Maximum static torque of the joining gear 31 <operating gear 4
Rotational operation torque of 0 (3) Rotational operation torque of operation gear 40 <rotor 50a
Therefore, in the drive system A, when the time of the recording paper 21 on the rotary table 14 is adjusted, the operation gear 40 is rotated with a torque larger than the maximum static torque of the joining gear 31. .

However, since the drive system A has the clock mechanism 50 built in the cartridge 11, it is necessary to secure the power supply of the clock mechanism 50 in the cartridge 11.
Moreover, since the cartridge 11 is taken out of the main body 1, the power source installed inside is limited to the battery.
For this reason, the battery cannot be constantly charged like a battery of a vehicle, and the battery needs to be replaced due to a decrease in charging voltage. There was a problem that it could not be fulfilled. In addition, in order to provide a power supply to the cartridge 11, an installation space must be secured in the housing 12 of the cartridge 11. Further, in consideration of the charging problem, it is necessary to install a large-capacity and long-life battery. However, there has been a problem that the installation space must be widened by that much, and the cartridge 11 and, consequently, the entire apparatus become large.

Therefore, the applicant of the present invention makes use of the feature of this type that the cartridge 11 is inserted into and removed from the main body 1 when proposing a cartridge type operation recorder, and is connected to the clock mechanism 50 of the drive system A. Some main gear mechanisms 30
A main gear mechanism 30 part disposed on the main body 1 side,
The operation gear 40 and the branch gear mechanism 45 are
A method of arranging on the side was adopted.

FIGS. 11 and 12 are plan views showing the arrangement of the drive system divided into the main body and the cartridge. FIG. 11 shows a state in which the cartridge is housed in the main body, and FIG. 12 shows a state in which the cartridge is slightly pulled out from the main body. Are respectively shown. FIG. 13 (a) is an enlarged side view showing a main gear mechanism portion in the drive system, and FIG. 13 (b) is an enlarged view showing a portion from the operation gear to the main gear mechanism in the drive system. Both of the side views show a state where the cartridge is housed in the main body. Then, in FIG. 11 to FIG.
6 and 7 are the same as those shown in FIGS.
The same reference numerals as those given in FIG. 7 and those in FIG. 7 are given, and the description of the overlapping parts is omitted.

As shown in FIG. 11, in the split drive system A, a clock mechanism 50 and a gear group A1 constituting a part of the main gear mechanism 30 extending from the clock mechanism 50 to the converging gear 31 are formed. The gear group A3 including the other main gear mechanism 30, the branch gear mechanism 45, the gear 14b, and the backlash prevention gear 35 is disposed on the main body 1 side.
1 and the output gear A5 provided at the end of the gear group A1 of the main body 1 and the passive gear provided at the head of the main gear mechanism 30 of the cartridge 11 when the cartridge 11 is housed in the main body 1. The gear A7 is configured to mesh.

More specifically, as shown in FIG. 12, the output gear A5 of the main body 1 is rotatably supported by the swing end of a swing arm 55, and the base end of the swing arm 55 is The gear A5 is swingably supported by the rotating shaft of the gear 51 meshed therewith. The output gear A5 is urged toward the passive gear A7 of the cartridge 11 by a coil spring 56 having one end locked to the swing arm 55, and a regulating member (not shown) is engaged with the swing arm 55. In addition, the swing of the swing arm 55 from the position shown in FIG. 12 to the passive gear A7 further is restricted.

As shown in FIG. 12, the passive gear A7 is disposed inside a shutter 12c that opens and closes an opening 12b at the front of the housing 12. The shutter 12c
As shown in FIG. 11, the operating lever piece 12f is provided integrally with the operating lever piece 12f inside the housing 12.
Is partially projected into the groove 12e on the bottom surface of the housing 12.

The shutter 12c is connected to the cartridge 11
When the cartridge 11 is inserted into the main body 1, the engagement pin 1A of the main body 1 is inserted into the groove 12e,
As shown in FIG. 11, the cartridge 11 is completely moved to the end of the groove 12e by engaging the operating lever piece 12f with the engaging pin 1A in the groove 12e.
At a time before being accommodated in the operating lever piece 12.
It is configured to open in response to the sliding of f and expose the passive gear A7 to the outside through the opening 12b.
Further, when the cartridge 11 is pulled out from the main body 1 and the operation lever piece 12f and the engagement pin 1A
Is released, as shown in FIG.
And a spring 12 erected between the operating lever piece 12f.
It is closed by the biasing force of g.

As described above, in the cartridge 11 in which the gear group A1 including the timepiece mechanism 50 and a part of the main gear mechanism 30 connected to the timepiece mechanism 50 in the drive system A is arranged on the main body 1, the backlash The maximum static torque of the merge gear 31 is set so as to exceed the preventive torque, and the merge gear 31 receives the backlash preventive torque. Therefore, as shown in FIG. 12, when the cartridge 11 is pulled out of the main body 1 and the engagement state between the output gear A5 and the passive gear A7 is released, the turntable 14 is rotated by the backlash prevention torque from the backlash prevention gear 35. I will not do it.

With such a configuration, it becomes possible to operate the clock mechanism 50 by receiving power supply from the battery of the vehicle in the same manner as in the case of the conventional round operation recorder, so that there is a problem of power supply to the clock mechanism 50. Solved everything.

[0032]

However, in the initial drive system A shown in FIGS. 6 and 7 using a sliding gear as the joining gear 31, and in the split drive system A shown in FIGS. The rotational operation torque of the operation gear 40 required for adjusting the time of the recording paper 21 on the
Since the maximum static torque of the joining gear 31 must be exceeded, the operating gear 40 is heavy and hard to rotate. In particular, in the split drive system A of FIGS. 11 and 12 described above, the maximum static torque of the joining gear 31 becomes a large torque exceeding the backlash preventing torque because the joining gear 31 receives the backlash preventing torque. For,
The operation gear 40 is more difficult to rotate. Therefore,
It is not possible to rotate the turntable 14 at a high speed so that the time can be set quickly, and the problem remains that the operability is poor.

The present invention has been made in view of the above circumstances,
An object of the present invention is to provide a cartridge type operation recorder having a main body having a clock mechanism, a rotary table on which recording paper for information recording is set, and a cartridge which is inserted into and removed from the main body. The backlash prevention gear receives the backlash prevention torque applied to the drive system side of the rotary table, preventing unnecessary rotation of the rotary table, improving the operability of the operation gear for time adjustment, and enabling quick time adjustment. It is an object of the present invention to provide a recording paper drive system structure of an operation recorder cartridge that can be used.

[0034]

In order to achieve the above object, the present invention relates to a main body having a rotary table for holding recording paper for information recording and having a clock mechanism for driving the rotary table for rotation. A structure of a recording paper drive system of an operation recorder cartridge to be taken in and out, wherein the cartridge is brought into and out of contact with an output gear of the timepiece mechanism as the cartridge is taken in and out of the main body, and is connected to the output gear. A power transmission gear mechanism for transmitting power from the clock mechanism to the rotary table, and a positive rotation direction of the power transmission gear mechanism connected to the rotary table and rotated by power transmitted from the clock mechanism. Anti-backlash gear that urges the power transmission gear mechanism through the rotary table in the reverse rotation direction, and allows operation from outside the cartridge An operation gear for time adjustment, and a branch gear mechanism connected to both the operation gear and the power transmission gear mechanism for transmitting rotation of the operation gear to the power transmission gear mechanism. One of the branch gear mechanisms is a reverse rotation that restricts rotation of the power transmission gear mechanism in the reverse rotation direction and allows rotation of the power transmission gear mechanism in the forward rotation direction. It has a prevention gear.

Further, according to the present invention, the branch gear mechanism includes the reverse rotation preventing gear, and the reverse rotation preventing gear is configured to move the branch gear mechanism in a direction corresponding to the reverse rotation direction of the power transmission gear mechanism. And the rotation of the branch gear mechanism in a direction corresponding to the forward rotation direction of the power transmission gear mechanism is allowed.

Further, the present invention provides a time setting direction changeover switch which can be operated from outside the cartridge, and the power transmission gear mechanism and the branching gear mechanism interlocked with the switching operation of the time setting direction changeover switch. A first contact / separation mechanism for bringing two gears in the other gear mechanism parts apart from the gear mechanism part on the opposite side to the rotary table from the reverse rotation preventing gear, and switching of the time setting direction changeover switch; Interlocking with the operation, the turning gear connected to both of the two gears when the two gears are separated, and separated from both of the two gears when the two gears are connected; Further comprising a second contact / separation mechanism for bringing the direction changing gear into and out of contact with both of the two gears separated from each other in conjunction with the switching operation of the direction change switch. It was.

[0037]

According to the present invention, the reverse rotation prevention gear receives the backlash prevention torque applied to the rotary table, the power transmission gear mechanism, and the branch gear mechanism from the backlash prevention gear. In a state where the connection of the transmission gear mechanism is disconnected, the backlash preventing torque prevents the turntable from rotating unnecessarily.

Then, with the cartridge removed from the main body and the connection between the clock mechanism and the power transmission gear mechanism disconnected,
When the time of the recording paper on the rotary table is adjusted, the operating gear may be rotated in a direction that is not restricted by the reverse rotation preventing gear with a torque exceeding the backlash preventing torque by the backlash preventing gear. Therefore, as the joining gear of the power transmission gear mechanism to which the branch gear mechanism is connected,
Using a so-called slip ring, which is a slip gear, rotates the operating gear with a lower torque compared to the conventional method in which the operating gear is rotated with a higher torque that exceeds the maximum static torque of the sliding gear higher than the backlash prevention torque. It becomes possible.

[0039]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are plan views showing a main body of a cartridge type operation recorder according to one embodiment of the present invention and a drive system arranged over the cartridge. FIG. 1 shows a state in which the cartridge is housed in the main body. Indicates a state where the cartridge is slightly pulled out from the main body. FIG. 3 (a)
FIG. 3B is an enlarged side view showing a part of the drive system, particularly showing a main gear mechanism portion, and FIG. 3B is an enlarged side view showing a part of the drive system, particularly showing a portion from an operation gear to a joining gear of the main gear mechanism. Both show a state where the cartridge is housed in the main body. 1 to 3, the same parts as those shown in FIGS. 11 to 13 are denoted by the same reference numerals as those shown in FIGS. 11 to 13, and the description of the overlapping parts will be omitted. Omitted.

The drive system C of this embodiment is similar to the drive system shown in FIG.
As shown in (b), in the main gear mechanism 130 that transmits power from the timepiece mechanism 50 of the main body 1 to the rotary table 14 of the cartridge 11, the joining gear 131 in the cartridge 11 to which the branch gear mechanism 145 joins slides. It differs from the conventional drive system A shown in FIGS. 11 to 13 in that a normal transmission gear in which a large-diameter gear 131d and a small-diameter gear 131b rotate integrally instead of a gear is used. Further, the drive system C of the present embodiment forms a branch gear mechanism 145 as shown in FIGS. 1, 2 and 3B, and
A different point from the conventional drive system A shown in FIGS. 11 to 13 is that a reverse rotation preventing gear 146 with a one-way clutch is used as a gear interposed between the operating gear 31 and the operation gear 40 and meshing with these two gears. ing.

In this embodiment, as shown in FIGS. 1, 2 and 3A, the main gear mechanism 130 provided in the cartridge 11, that is, the passive gear A
7 through the joining gear 131, the gear 1 of the rotary table 14
A power transmission gear mechanism A9 is constituted by a group of gears reaching the terminal gear 132 meshing with the power transmission gear 4b.

FIG. 4 is a sectional view of an essential part of the reverse rotation preventing gear. The reverse rotation preventing gear 146 includes a shaft 1 fixed to the housing 12.
46a and a number of bearings 14 on the outer periphery of the shaft 146a.
6b, and has an annular outer cylinder 146c fitted through the inner cylinder 6b.

An outer peripheral surface of the outer cylinder 146c is formed in a tooth surface, and a plurality of cam surfaces 146d corresponding to the bearings 146b are provided on an inner peripheral surface of the outer cylinder 146c.
6c are formed at intervals in the circumferential direction. On both sides of each of the cam surfaces 146d in the circumferential direction of the outer cylinder 146c, first and second restricting members 146e extending from the outer cylinder 146c to the shaft 146a to restrict the movement of the bearing 146b in the circumferential direction. , 146f are arranged at an interval larger than the diameter of the bearing 146b in the circumferential direction, and the bearing 146b is interposed between the bearing 146b and the first regulating member 146e on the left side of the bearing 146b in FIG. The second regulating member 146f on the right side of the bearing 146b in FIG.
Is biased to the side. The cam surface 146d is connected to the first
It is inclined so as to approach the outer peripheral surface of the shaft 146a from the regulating member 146e to the second regulating member 146f,
The bearing 146 in the circumferential direction of the outer cylinder 146c is provided between the cam surface 146d on the first regulating member 146e side and the outer peripheral surface of the shaft 146a from the position of the bearing 146b shown in FIG.
A movable portion 146h is formed to allow the movement of the bearing 146b in the circumferential direction of the outer cylinder 146c between the cam surface 146d on the second regulating member 146f side and the outer peripheral surface of the shaft. 146j are formed.

The reverse rotation preventing gear 146 having such a configuration is
When a rotational force is applied to the outer cylinder 146c in the direction indicated by the arrow D in FIG. 4, the bearing 146b is opposed to the first regulating member 146e from the position shown in FIG. 4 against the elastic force of the spring 146g. It is configured to move and be located in the movable portion 146h, and the outer cylinder 146c is rotated in the direction of the arrow d. Further, when a rotation force is applied to the outer cylinder 146c in a direction indicated by an arrow e opposite to the arrow d in FIG.
Moves relative to the second restricting member 146f side against the restoring force of the spring 146g from the position shown in FIG.
46j, and the bearing 146b is
It functions as a wedge between the shaft c and the shaft 146a, and is configured so that the rotation of the outer cylinder 146c in the direction of the arrow E is restricted by the shaft 146a and does not move.

In the drive system C shown in FIG. 1, the rotation of the turntable 14 in the clockwise direction indicated by arrow c in FIG.
The rotation of the turntable 14 in the counterclockwise direction indicated by the middle arrow f is permitted. In other words, the turntable 14 rotates only in the direction in which the recording paper 21 on the turntable 14 rotates in the time direction. Permissible.

Next, the operation will be described. In a state shown in FIG. 2 in which the cartridge 11 is removed from the main body 1, the turntable 14 is urged by a backlash prevention torque from a backlash prevention gear 35 in a direction to rotate in the direction of arrow C in FIG. The backlash prevention torque is transmitted to the power transmission gear mechanism A9 and the branch gear mechanism 145 via the table 14, and a torque is applied to the reverse rotation prevention gear 146 in the direction of arrow c in FIG.

However, since the reverse rotation preventing gear 146 restricts the rotation of the rotary table 14 in the direction of the arrow C and does not rotate, the backlash preventing torque is not transmitted to the operation gear 40 but is transmitted from the rotary table 14. A gear group portion that reaches the reverse rotation prevention gear 146 via the junction gear 131, that is, a power transmission gear mechanism A9 portion closer to the rotary table 14 than the junction gear 131, and a backlash of the reverse rotation prevention gear 146, that is, the branch gear mechanism 145. Is eliminated by the backlash prevention torque. Since the gear group including the joining gear 131 does not rotate, all the gears of the cartridge 11, that is, the rotary table 14, the power transmission gear mechanism A9, the branch gear mechanism 145, and the operation gear 4
0 and the backlash prevention gear 35 remain stopped without rotating in a state where the cartridge 11 is removed from the main body 1.

In order to house the recording paper 21 in the cartridge 11 and house it in the main body 1, first, the cover 13 of the cartridge 11 is opened, the recording paper 21 is set on the rotary table 14, the cover 13 is closed, and the cover 13 is closed. The recording paper 21 is pressed against the rotary table 14 by the 13 press ring 13b. Then, the recording paper 21 in the cartridge 11 is looked through the window 13a of the lid 13 and the position of the recording paper 21 is confirmed and compared with the current time. By rotating the operation gear 40 so as to rotate in the direction, the time of the recording paper 21 on the turntable 14 is adjusted according to the current time.

When the operating gear 40 is operated in the above direction, the rotational torque of the operating gear 40 is applied to all the other gear groups in the cartridge 11. Among the torques in the rotation direction opposite to the rotation torque generated in the other gear group, the largest torque is the anti-backlash torque of the anti-backlash gear 35, and therefore, the operating gear 40 is
When operated with a torque exceeding the backlash prevention torque, the motor rotates. After the operation gear 40 is rotated by the torque, the time adjustment of the recording paper 21 on the rotary table 14 is completed, and after the operation of the operation gear 40 is completed, the same operation as before the time adjustment occurs. Therefore, the backlash between the power transmission gear mechanism A9 and the branch gear mechanism 145 closer to the rotary table 14 than the confluence gear 131 is eliminated by the backlash prevention torque, and all gear portions of the cartridge 11 remain stopped without rotating. Becomes

After the time has been set, the cartridge 11 is inserted into the main body 1 through the cartridge insertion opening 7.
Then, as shown in FIG.
A enters the groove 12e of the housing 12 of the cartridge 11, and with the insertion of the cartridge 11, the operating lever piece 12f engages with the engagement pin 1A in the groove 12e, and
At a time point before the cartridge 11 is completely accommodated in the main body 1, the shutter 12 c is opened according to the sliding of the operating lever piece 12 f and the opening 12 b at the front end of the housing 12 is closed. Through this, the passive gear A7 is exposed to the outside.

When the cartridge 11 is completely housed in the main body 1, as shown in FIG. 1, the output gear A5 of the main body 1 elastically contacts the passive gear A7 via the swing arm 55 by the coil spring 56. Mesh. Therefore, by operating the clock mechanism 50 and rotating the rotor 50a, the rotary table 14 is rotated in a counterclockwise direction indicated by an arrow f in FIG. Of the recording paper 21 rotates in the direction in which time advances, and in this state, the recording needle of the main body 1 is moved to the recording paper 21.
, The information is recorded on the recording paper 21.

When the information has been recorded on the recording paper 21 and the cartridge 11 is removed from the main body 1 by pressing the eject button 6, the same state as before the cartridge 11 was inserted into the main body 1 and accommodated therein was used. Combined gear 131
The backlash of the power transmission gear mechanism A9 on the rotary table 14 side and the branch gear mechanism 145 from the joining gear 131 to the reverse rotation prevention gear 146 is eliminated by the backlash prevention torque, and all the gears of the cartridge 11 rotate. Without stopping.

As described above, according to this embodiment, the branch gear mechanism 145 in the gear group A3 arranged on the cartridge 11 side of the driving system C of the operation recorder is connected to the rotary table by the power from the clock mechanism 50. Since the rotation preventing gear 14 is constituted by a reverse rotation preventing gear 146 for restricting rotation in a direction opposite to the rotation direction of the rotation preventing gear 14, and the backlash preventing torque from the backlash preventing gear 35 is received by the reverse rotation preventing gear 146, power transmission is performed. Gear mechanism 130 and branch gear mechanism 145
Converging gear 131 of the power transmission gear mechanism 130
As a result, it is possible to use a normal transmission gear instead of a conventional sliding gear.

Therefore, when rotating the operating gear 40, a smaller torque exceeding the backlash prevention torque is required, compared with the prior art that requires a larger torque than the maximum static torque of the sliding gear which greatly exceeds the backlash prevention torque. The operation gear 40 can be rotated,
The rotary table 14 is provided by a quick rotation operation of the operation gear 40.
Can be rotated at a high speed so that the time can be set quickly, and the operability can be dramatically improved.

In this embodiment, the rotation of the operating gear 4 is restricted by the rotation prevention in the direction of arrow e in FIG.
The case has been described in which the time adjustment of the recording paper 21 by the operation of 0 can be performed only in the direction in which time advances. However, although illustration is omitted, for example, a time setting direction changeover switch that can be operated from the outside is set in the cartridge 1.
1, two gears in the power transmission gear mechanism A9 are brought into contact with and separated from each other in conjunction with the changeover switch, and when the two gears are separated from each other, the direction change gear is engaged with both of the two gears. Then, it is also possible to configure so that the time can be adjusted in the direction in which the time returns.

In this case, in addition to the changeover switch and the direction change gear, a first contacting / separating mechanism for bringing two gears in the power transmission gear mechanism A9 into and out in conjunction with the switching operation of the changeover switch is provided. The cartridge 11 may be additionally provided with a second contact / separation mechanism for interlocking the direction changing gear with both of the two gears separated from each other in conjunction with the switching operation of the changeover switch. . Further, the two gears which come and go in conjunction with the switching operation of the changeover switch are, for example, in the case where the branch gear mechanism 145 is constituted by a plurality of gear groups including the reverse rotation prevention gear 146, and between the two inside the branch gear mechanism 145. Alternatively, a gear in the joining gear 131 and the branch gear mechanism 145 may be used.

Further, the location where the reverse rotation preventing gear 146 is provided may not be provided in the branch gear mechanism 145 as in the embodiment, but may be provided in the power transmission gear mechanism A9, for example. However, as in the present embodiment, by providing the gear mechanism as close to the passive gear A7 and the operating gear 40 as possible, there is an advantage that the gear mechanism portion capable of eliminating backlash by the backlash prevention torque can be made larger. is there.

[0058]

As described above, according to the present invention, there is provided a rotary table for holding a recording paper for recording information, and a running operation which is carried in and out of a main body having a clock mechanism for rotating the rotary table. A structure of a recording paper drive system of a recorder cartridge, wherein the cartridge is moved toward and away from an output gear of the timepiece mechanism as the cartridge is taken in and out of the main body, and is connected to the output gear when the timepiece is connected to the output gear. A power transmission gear mechanism for transmitting the power of the rotary table to the rotary table;
The power transmission gear mechanism is connected to the rotary table, and rotates the power transmission gear mechanism rotated by the power transmitted from the timepiece mechanism in a reverse rotation direction opposite to the normal rotation direction of the power transmission gear mechanism via the rotary table. An anti-backlash gear to be urged, an operation gear for adjusting the time that can be operated from the outside of the cartridge, and connected to both the operation gear and the power transmission gear mechanism to rotate the operation gear to the power A branch gear mechanism for transmitting to a transmission gear mechanism, wherein one of the power transmission gear mechanism and the branch gear mechanism regulates rotation of the power transmission gear mechanism in the reverse rotation direction, The power transmission gear mechanism has a reverse rotation preventing gear that allows the power transmission gear mechanism to rotate in the forward rotation direction.

Therefore, when the cartridge is taken out of the main body and the clock mechanism and the power transmission gear mechanism are disconnected from each other, the time of the recording paper on the rotary table is adjusted.
As a joining gear of the power transmission gear mechanism to which the branch gear mechanism is connected, a sliding gear called a so-called slip ring is used, and the operation gear is rotated with a high torque that exceeds the maximum static torque of the sliding gear higher than the backlash prevention torque. Compared to the conventional operation, the operation gear can be rotated with a small torque that exceeds the backlash prevention torque by the backlash prevention gear, preventing unnecessary rotation of the rotary table due to the backlash prevention torque, Improve the operability of the operation gear for time adjustment,
There are effects such as enabling quick time adjustment.

[Brief description of the drawings]

FIG. 1 is a plan view of a driving system arranged over a main body and a cartridge of a cartridge type operation recorder according to an embodiment of the present invention in a state where the cartridge is housed in the main body.

FIG. 2 is a plan view of the drive system of FIG. 1 in a state where a cartridge is slightly pulled out from a main body.

FIG. 3 is a view showing the drive system of FIG. 1 in a state where the cartridge is housed in a main body. FIG. 3 (a) is an enlarged side view showing, in particular, a main gear mechanism portion in the drive system, and FIG. 3 (b).
FIG. 4 is an enlarged side view of a portion of the drive system, particularly from the operation gear to the merge gear of the main gear mechanism.

FIG. 4 is a sectional view of a main part of the reverse rotation preventing gear shown in FIG. 1;

FIG. 5 is a perspective view showing an appearance of a cartridge type operation recorder.

6 is a plan view showing an internal structure of a housing of a cartridge according to a conventional example accommodating all drive systems of the rotary table shown in FIG.

7A and 7B are diagrams showing the drive system of FIG. 5, in which FIG. 7A is an enlarged side view showing, in particular, a power transmission gear mechanism portion in the drive system, and FIG. It is an enlarged side view which extracts and shows the part from a gear to a power transmission gear mechanism.

8 (a) is a plan view and FIG. 8 (b) is a sectional view showing the internal structure of the anti-backlash gear shown in FIG.

9 is an enlarged side view of a sliding gear used as a joining gear in the drive system of FIG.

10 is a view showing details of the friction spring shown in FIG. 9; FIG. 10 (a) is a plan view and FIG. 10 (b) is a side view.

FIG. 11 is a plan view showing a state in which a cartridge of a drive system of a conventional cartridge type operation recorder divided into a main body side and a cartridge side is housed in the main body.

12 is a plan view of the drive system of FIG. 11 in a state where the cartridge is slightly pulled out from the main body.

13 is a diagram showing the drive system of FIG. 11 in a state where the cartridge is housed in the main body, and FIG. 13 (a) is an enlarged side view showing, in particular, a main gear mechanism portion in the drive system;
FIG. 3B is an enlarged side view of a portion of the drive system, particularly from the operation gear to the merge gear of the main gear mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 11 Cartridge 14 Rotary table 21 Recording paper 35 Backlash prevention gear 40 Operation gear 50 Clock mechanism 145 Branch gear mechanism 146 Reverse rotation prevention gear A5 Output gear A9 Power transmission gear mechanism C Drive system

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-3867 (JP, A) JP-A-3-175396 (JP, A) JP-A-1-66645 (JP, U) 15504 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01D 9/00-9/42 G01D 15/00-15/34 G04B 1/00-49/04 G04C 3/00 G04C 3/14 G04C 9/00-9/08

Claims (3)

(57) [Claims] 1. A recording paper driving system for an operation recorder cartridge which has a rotary table for holding recording paper for information recording and which is inserted into and removed from a main body 1 provided with a clock mechanism for rotating the rotary table. With the cartridge in and out of the main body,
A power transmission gear mechanism that is connected to and separated from the output gear of the timepiece mechanism and that transmits power from the timepiece mechanism to the rotary table when connected to the output gear; A backlash prevention gear that urges the power transmission gear mechanism via the rotary table in a reverse rotation direction opposite to the normal rotation direction of the power transmission gear mechanism rotated by the power transmitted from the power transmission gear mechanism; An operation gear for adjusting the time that can be operated from the outside of the cartridge; and a branch gear mechanism that is connected to both the operation gear and the power transmission gear mechanism and transmits rotation of the operation gear to the power transmission gear mechanism. Wherein one of the power transmission gear mechanism and the branch gear mechanism regulates rotation of the power transmission gear mechanism in the reverse rotation direction, And a reverse rotation preventing gear that allows the power transmission gear mechanism to rotate in the forward rotation direction, wherein the recording paper drive system structure of the operation recorder cartridge. 2. The branch gear mechanism includes the anti-reverse gear, and the anti-reverse gear restricts rotation of the branch gear mechanism in a direction corresponding to the reverse rotation direction of the power transmission gear mechanism. The recording paper drive system structure of an operation recorder cartridge according to claim 1, wherein the branching gear mechanism is allowed to rotate in a direction corresponding to the forward rotation direction of the power transmission gear mechanism. 3. A reverse rotation of the power transmission gear mechanism and the branch gear mechanism in conjunction with a time adjustment direction changeover switch that can be switched from outside the cartridge and a switching operation of the time adjustment direction changeover switch. A first contacting / separating mechanism for bringing two gears in the remaining gear mechanism part apart from the gear mechanism part on the opposite side to the rotary table from the prevention gear, and interlocking with a switching operation of the time setting direction switch. , Are connected to both of the two gears when the two gears are separated from each other, and are connected to the two gears when the two gears are connected.
A direction changing gear separated from both of the two gears, and the direction changing gear is brought into contact with and separated from both of the two separated gears in conjunction with a switching operation of the time setting direction changeover switch. The recording paper drive system structure of the operation recorder cartridge according to claim 1 or 2, further comprising a second contact / separation mechanism.