JPS5825208B2 - Mileage measurement and recording device attached to the hub of a car - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mileage measuring and recording device that is attached to the hub of an automobile, and in particular, it is possible to insert a metal piece or the like from the outside into a computer groove wheel to disturb it and prevent the mileage from being falsified. This is the purpose.

The above-mentioned mileage recording device attached to the bubble of a car, as shown in Japanese Patent Application No. 50-112175, includes a calculating mechanism, a stamp card printing mechanism, a feeding means for advancing a number wheel in the calculating mechanism, and the feeding means. An annular pendulum disposed coaxially with a wheel shaft of a vehicle for driving and held stationary regardless of rotation of the wheel shaft, and a worm connected to the pendulum shaft supporting the pendulum, A worm tooth ring is meshed with this worm, and the worm tooth ring is supported by a case attached to the bub, and as the wheel shaft rotates, the worm tooth ring is caused to revolve around the worm, thereby causing the worm tooth ring to rotate on its own axis. and a drive means for the feeding means.

The feeding means for feeding the computer groove ring in stages includes a feeding arm that swings between two stable end positions in any direction of rotation under the action of a snap spring in accordance with the rotation of the worm gear ring. The position is obtained by gradually rotating the feed arm to the dead center of the snap spring.

Since the calculator has raised numeric type for printing on stamp cards, it is possible to insert a thin, appropriately bent piece of metal into the card hole and press against the type to push it back. .

Therefore, it is possible to modify the calculation mechanism so that it shows a shorter distance than the actual distance traveled.

The object of the present invention is to make it impossible to cheat the device (distance measuring device) as described above.

In the feeding means of the device according to the present invention, a pair of movable pinions rotating on a drive shaft parallel to the calculation wheel shaft are arranged opposite to each of the numeric type wheels of each digit, and the pinions are connected to the numeric type wheels of each digit. The numeral type wheel is disposed between the numerals and the numeral type wheels, and is arranged to mesh with both of the numeral type wheels.

A feature of the present invention is that the drive shaft, the end of which is placed on the same side as the highest numerical type wheel of the calculating mechanism, is supported by an elastic holding member, and the holding member exceeds a certain size. At the same time as the drive shaft is acted upon by a radial force, the end is released and the end performs a pivoting motion with the other end of the shaft as the pivot point, so that at least the largest number type ring and the corresponding one The mesh with the moving pinion is disengaged.

The number type wheel then prints the stamp, but the upper number type wheel is rotated freely, so that the printed numbers are disordered and unauthorized intervention is easily detected.

The invention will now be described in detail with reference to an embodiment illustrated in the accompanying drawings.

First, the feeding mechanism for the number type wheel of the calculating mechanism will be explained in detail with reference to FIGS. 1 and 2.

Reference numeral 9 denotes a drive shaft for the feed mechanism, and a worm tooth wheel 10 is engaged with a screw 16 carved at the end of the shaft, so that the mutual relative rotation of the drive shaft 9 and the worm tooth wheel 10, for example, the drive shaft with a bub The worm tooth wheel is held stationary regardless of the rotation of the bub, or the drive shaft 9 is held concentric with the bub and stationary regardless of the rotation of the bub,
The worm gear 10 may be meshed with the screw 16 and its outer periphery may revolve around the drive shaft 9 as the bub rotates, and this revolution may cause the worm gear 10 to rotate. This is shown in Japanese Patent Application No. 112175/1983 filed by the present applicant.

i.e. a side wall 73 concentric with and attached to the bub;
．． A hollow annular pendulum is attached to the end of the drive shaft 9 which is rotatably supported by bearings 21 and 22 at 75, and an eccentric load is applied by inserting an appropriate number of balls into the hollow part of the pendulum,
As a result, the pendulum drive shaft 9 is held stationary regardless of the rotation of the bub, and the shaft 42 of the worm gear 10 meshed with the screw 16 is aligned parallel to the drive shaft 9 and on both side walls 7.
It is supported by a bracket 11 supported at 3.75, and thus causes the worm gear 10 to revolve around the drive shaft 9 as the bub rotates.

The first part of the transfer scheme, which transfers the continuous movement of the worm gear wheel 10 to the number wheel 19, consists of a crank mechanism.

The shaft 42 with the worm gear 10 has a plate 2B with a crank pin 29 at its opposite end.

The crank pin is fitted into a groove 31 provided along the axis of the crank arm 30, and rotation of the plate 28 causes the crank arm 30 to swing about the axis 25.

The crank arm 30 reciprocates between its ends regardless of the direction of rotation of the worm gear 10.

The crank arm is bent outwardly at the end opposite the groove 31 and has a pair of spaced apart dog tips 32.32.
It is equipped with

The feed arm 33 whose central portion is supported by a shaft 35 includes:
Contoured arms 33A, 33B are provided with a stop member 34 facing between the dog tips 32, 32, and protrude at a distance, and the contoured arms 33A, 33
A stop pin 36 provided on the side wall 73 protrudes between B.

This allows the feed arm 33 to swing between two ends determined by the contours of the feed arm 33 and the stop pin 36.

The feed arm 33 further includes a feed spring 37 and a spring support 3B.
is attached.

The feed spring 37 activates a ratchet 53 which is mounted on the side of the first number type wheel 19 and rotates on a calculation wheel axle 54.

The feed arm also snaps into the spring 3 via the spring support 3B.
9, and one end of the snap spring 39 is supported by a support portion 40.

The feed arm 33 can assume two stable positions.

In other words, the contour arm 33A is in contact with the stop pin 36 at the first position indicated by the dashed line (in this position, the snap spring 39
is tensioned and the feed spring 3T is poised to advance the tooth 41 on the ratchet 53 adjacent to the first number wheel 19).
and the second position where the contour arm 33B is in contact with the stop pin 36.

In this second position the snap spring 39 is relaxed and the tooth 41 is advanced one step.

A forced feed between the two end positions determined by the stop pin 36 and the contour arms 33A, 33B is obtained by a suitable gap provided between the dog tip 32 and the stop member 34 (FIG. 2).

This forced feed is not utilized during normal operation.

This is because the snap spring causes the feed arm to be gradually raised to a dead center position and from there flipped back to a stable end position.

Even if the movement of the snap is impeded for some reason (e.g. dust trapped inside, increased friction,
(or an instrument incorrectly inserted to break the number wheel) The number wheel is advanced by force and the calculation of the distance traveled continues.

Should a definitive stop brake be applied to the number wheel, the feed spring 37 will be under pressure and permanently distorted, so that even if the stop brake is removed, the number wheel will not advance any further.

Printing on the card is done through the hole 64 in one wall 63 of the card hole.
This is done by a number ring 19 passing through it and by a number ring 19A which is secured through the hole 64A and forms the device number of the device.

As can be seen from FIGS. 3a and 3b, the distance calculating mechanism consists of a numeric type wheel 19 rotating on an axis 54.

A transfer pinion 62 rotating on the shaft 55 is provided between the ratchet 53 and the first numeric type wheel A, and subsequently the pair of numeric type wheels A-B, B-C.

(provided between , -D, and EF.

The type 57 of the number type wheel is raised to stamp the printing card inserted into the card hole 4 through the hole 64 (FIG. 3b).

The number wheel axle 54 has a fairly large diameter for clear printing.

Therefore, although the frictional moment is relatively high, the diameter of the drive shaft 55 is made small to keep the frictional moment low.

Each transfer pinion 62 consists of a bub 65, a first tooth row 66 of five teeth 68 connected to the bub, and a second tooth row 67 of ten teeth connected to the tooth row 66.

A tooth 68 (overlapping with tooth 69 and shown in dotted lines in Figure 3b) cooperates with a projection, which has an adjacent notch for recessing the tip of the tooth 68 and a ratchet. 53 (see FIG. 2), so that each pinion 62 rotates once per revolution of the lower digit type wheel and ratchet, i.e. 5. It rotates one-minute rotation at a time, and sequentially transmits the rotation to the number type wheel in the upper digits.

The step-by-step drive, ie, the frame-advance movement, is performed by the meshing of the tooth row 67 with the tooth row T1 of the numeric type wheel.

The number type wheel has notches from O to 9, with tooth rows 67 and 1.
By setting the ratio of the number of teeth to 1:2, the pinion 62
One-fifth of a rotation advances the number on the number type wheel by one piece.

In drawing 3a, the number 765422 is shown in the printing position.

As mentioned above, the number ring 19 in Figure 3a includes A, B, C, D,
There are names E and F, and the highest value is 9,99,999.
,9999°99999.9999991cm.

Figure 3b shows what a person attempting to improperly alter the numbers shown by a calculator would likely do.

That is, by inserting a suitably bent metal piece 56 into the card hole 4 and pressing on the raised numeral 57, this numeral is forced back and a smaller numeral is therefore displayed.

In practice, the numeral ring A relates to the lower digit of the kilometer.

Modifying B and C is not very important, but the number wheels, E and F are important because they relate to the higher digits.

FIG. 3b shows two lines intersecting at the center of the drive shaft 55, one of which extends past the point of contact between the metal piece 56 and the numeric type 57, and the other line extending from the shaft 55.
extends across the center of

These two lines form a small angle between them and the axis 54
A line passing through the center of , indicates the direction of force P, which acts on drive shaft 55 and becomes relatively large when a relatively small force is applied to metal strip 56 .

In order to prevent the possibility of tampering with the number type wheel, according to the invention it is provided that the drive shaft 55 moves outwards under the action of the force P.

That is, the upper end 14 (FIG. 3a) of the shaft 55 is connected to the lower end 12 thereof.
It swings toward the left with the center of rotation at .degree., thereby causing the tooth row 71 on the number wheel 19 to move away from the pinion 62.

This means that the number wheel 19 is no longer locked by the pinion 62 and is therefore free to perform uncontrolled movements, thereby controlling.

It means taking an unattainable position.

Therefore, when stamping, the numbers are printed partially, which makes it immediately obvious that the stamp has been modified.

The outward movement of the shaft 55 will be explained in detail as follows.

The shaft 55 is provided with an annular groove 61 (FIG. 6) near each of its ends.

The shaft end 72 (FIG. 3a) is inserted into the groove 61 in the side wall 1 of the frame.
3 and inserted into a conventional hole in the wall.
have.

At one shaft end 14 there is a groove rider 4 that locks the shaft 55.
58 (FIGS. 4a and 4b) is provided to engage with the groove 61, and the groove rider 5B is attached in contact with the inner surface of the side wall 75.

The groove rider 58 is bent upwards at one end T6 (FIG. 4a) and its bent end 76 is inserted into the groove 17 in wall T5 (FIG. 3c).

As can be seen from FIG. 4b, the groove rider 5B is provided with a specially shaped notch 78, forming a U-shape, and has shafts 5 on both legs.
A portion 19 is formed which fits into the bottom of the groove 61 in 5.

The hole 60 in the side wall 75 for the shaft 55 is specially shaped as shown in FIG.

The branch hole 60 has a portion 80A whose diameter matches the diameter of the shaft 55.
, and a portion 80B having a larger diameter connects thereto.

The shape of the hole 60 is approximately similar to a keyhole, and its exterior approximately corresponds to the outline of the number 8.

For example, one loop of numbers is essentially a large loop with another loop squeezed into it.

The normal position of shaft end 74, groove rider 58 and hole 60 is shown in Figure 3c.

The end 74 is seated within the smaller portion 80A of the hole 60, tightened by a portion 79 of the groove rider 5B.

As shown in FIG.
When the groove rider 58 is pressed against the groove rider 58, the engagement force between the portion 79 of the groove rider 58 and the shaft 55 is overcome by the relatively large force P, and the groove 61 on the shaft end 74 side protrudes outside the groove rider 58. The end portion 74 is the large portion 80B of the hole 60
move inside.

In this way, at least the numbers E and F are deviated from the corresponding pinions 62 as described above, and any wrongdoing will be discovered without mercy.

Of course, the force with which the groove rider 58 locks the shaft 55 is adjusted so that it does not move outward due to impacts or shocks that may occur during normal use of the distance measuring device.

During installation, the groove 61 of the shaft 55 is inserted against the elasticity of the groove rider 58 and is connected to the portion 19, but the groove rider 58 is not plastically deformed during this connection.

Furthermore, the groove rider is designed so that a relatively small radial movement of the shaft 55 allows the shaft to be removed from engagement with the groove rider.

Furthermore, since the opening of the groove rider 58 is elastically narrowed, the groove 61 of the drive shaft 55 that protrudes from the groove rider 5B will not easily go back into the groove rider due to impact or shock. Can not.

The device shown in the drawings may vary within the scope of the claims.

[Brief explanation of the drawing]

1 and 2 show a feeding mechanism for a numerical type wheel according to the invention, FIG. 2 shows a cross section taken along the line V-■ in FIG. 1, and FIG. 3a shows a detail of the feeding means seen from above. Figure, 3b
3A and 3C show cross sections taken along the Y-Y line and the X-X line, respectively, in FIG. An enlarged view of the shaft hole at one end of the drive shaft with the drive wheel for the numeric type wheel, FIG. 6 shows the drive shaft. 4...Card hole, 10...Worm gear ring, 19...Number type ring, 28...Plate, 29...Crank pin , 30...
...Crank arm, 31...Groove, 32...
...Dog tip, 33...Feed arm, 3
3A...contour arm, 33B...contour arm, 34...stop member, 35...
...Axis, 36...Stop pin, 37...
...Feeding spring, 38...Spring support, 39...
...Snap spring, 40...Support part, 41.
...Teeth, 42...Shaft, 53...
Ratchet wheel, 54... Calculation wheel set, 5
5... shaft, 56... metal piece, 57...
...Print, 58...Groove rider, 59...
...Shaft stop, 60...Hole, 61...
・Annular groove, 62... Transition pinion, 63...
... Wall, 64 ... Hole, 64A ... Hole, 65 ... Bubble, 66 ... First tooth row,
61...Second tooth row, 6B...Five teeth,
69... Ten teeth, 70... Pawl wheel 53
part, 71...dentition, 72...lower end, 73...elevation, 74...upper end,
15... side wall, 76... bending part,
11... Groove, 7B... Hole, 79...
... Part of the groove rider, 80A ... Part of the hole 60, 80B ... Part of the hole 60.

Claims (1)

[Scope of Claims] 1. A calculation mechanism mainly consisting of a plurality of numeric type wheels, a printing mechanism that presses an inserted card against the type wheels, and a printing mechanism that operates the calculation mechanism as the hub rotates to press the type wheels. In a mileage measuring and recording device attached to the hub of an automobile, which includes a feeding means for pushing forward, the calculation mechanism includes a plurality of number wheels 19 rotatably supported on a shaft 54 to display each digit number. The drive shaft 55 is rotatably supported by a drive shaft 55 parallel to the number wheel shaft 54, and includes a transfer pinion for inserting the number wheels, which is disposed between each of the number wheels.
The side wall 75 on the upper digit side of the number wheel supporting the numeral wheel has a horizontally elongated hole 60 into which the shaft end 74 of the shaft 55 is fitted, and the inner wall thereof has a hole 60 into which the shaft end 74 is fitted. A letter-shaped groove rider 58 is attached, and the drive shaft 55 is normally elastically supported on one side of the hole 60 by the groove rider 58, and extends a certain amount in the direction of rotation with respect to the number wheel 54. Due to the applied force, the transfer pinion receives a radial force, and the drive shaft that supports the transfer pinion is swung around its other end as a fulcrum, removed from the groove rider, transferred to the other side of the horizontally long hole, and is moved to the other side of the horizontally long hole. A mileage measuring and recording device attached to a hub of a motor vehicle, characterized in that both higher number type wheels are disengaged from the transfer pinion and held disengaged by the groove rider. 2. The drive shaft 55 is provided with grooves 61 with small diameters near both ends, and the shaft stop 59 provided on the side wall 73 that supports the lower digit side of the number wheel shaft 54 is connected to the groove 61 on one end 72 of the drive shaft 55.
1, and the groove 61 at the other end of the drive shaft extends radially from the other end of the drive shaft.
The end portion 7 is fitted into an axially locking groove rider 58.
4. A mileage measuring and recording device to be attached to a hub of an automobile according to claim 1, wherein numeral 4 is inserted into a horizontally elongated hole 60 in a side wall 75 on the other side. 3. The horizontally elongated hole 60 consists of two circular hole portions that partially overlap each other, and the first hole portion 80A has a diameter matched to the diameter of the drive shaft and receives the end portion 74 without a gap; The second aperture portion 80B has a relatively large diameter and receives the end thereof with a large clearance after release of the resilient groove rider 58.
A mileage measuring and recording device that is attached to the hub of the automobile described in 2. 4. The groove rider 58 is a metal piece rider with a notch 78, and each leg of the rider has an arcuate portion 79 at the middle portion of its inner edge, and the mutual relationship between this arcuate shape and these two legs is The groove 61 of the drive shaft 55 corresponding to the distance of
the rider has an upwardly curved portion 76 on its edge opposite the cutout hole 7, said portion adapted to mate with a groove 77 in the side wall 75;
When the elastic member, the dimensions of the rider 58, and the dimensions of the shaft groove 61 exceed a certain value, a radial or axial force is applied to the shaft 55, and at the same time, the shaft end disengages from the rider and forms a horizontally elongated hole. Claims 2 or 3, characterized in that the device takes an uncertain position in the radial and axial directions within the scope of the present invention.
A mileage measuring and recording device to be attached to the bubble of the automobile as described in Section 1.