JPH03225582A - Total counter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an outer pinion type or inner pinion type total counter used in travel distance meters, hour meters, etc. of automobiles.

[Prior Art J] In general, this type of counter has a plurality of display wheels rotatably provided on a support shaft installed horizontally on the frame, and a display wheel is provided between each display wheel, and in the case of an outer pinion type, a counter is provided on another support shaft. In the inner pinion type, there is a pinion installed in a pinion holder interposed between display wheels, and continuous teeth are provided on the lower digit side of each display wheel, and two teeth are provided on the upper digit side. Steps are provided around the entire circumference leaving the intermittent teeth and the valleys of the intermittent teeth, and the pinion has an even number of teeth, and short teeth are formed by notching in the axial direction by the thickness of the long teeth and the step portions. are provided alternately, and when the lowest digit display wheel rotates, the pinion slides in a restrained state where the short teeth are placed on the surface of the step and the long teeth on both sides are in contact with the inner circumferential surface of the step. do. and,
When the two intermittent teeth reach the position of the pinion, the short teeth located on the step surface abut against the first intermittent tooth, which causes the pinion to rotate together with the indicator wheel and the long teeth of the pinion to fall into the trough. When the pinion rotates further, the next short tooth is guided to the step surface, and the long tooth is removed from the trough, and the pinion returns to the inhibited state. Since the pinion meshes with the continuous teeth of the display wheel on the upper digit side, the rotation of the pinion causes the display wheel on the higher digit side to be carried up by one display. In this way, the display wheel is carried up one by one from the lower digit to the upper digit via the pinion, and as the carry progresses, the display of all digits becomes "9", for example '999999J'. If this is displayed, the next carry will return to the display of roooooooJ, and the display will change from the display of all digits as "9" to the display of all digits as "0".
The configuration is such that the transition to the display can be performed any number of times.

[Problems to be Solved by the Invention] In the above-mentioned prior art, a plurality of display wheels are carried up one after another via a pinion, and the display changes from a display in which all digits are "9" to a display in which all digits are "0". The user intentionally rotates the lowest digit display wheel of a used car's total counter at high speed using an appropriate means such as a motor to change the display from all digits of "9" to all digits of "0". By shifting, it was not possible to prevent the total display value of the counter from being intentionally changed to a smaller display value.

Therefore, in order to prevent such acts of intentionally changing the display value to a lower display value, all digits of the total counter "
It is conceivable to provide a locking means to prevent the transition from the 9" display to the all-digit "0'' display.

However, despite the desire of automobile manufacturers to deliver meters with a total display value close to zero, in the meter market there is a need for counter adjustment and inspection. The integrated value may exceed the desired value, and in order to deal with this, meter factories usually assemble the total counter with a negative display, and during the adjustment and inspection process, all digits are changed from displaying "9" to all digits "O". ``We are moving this to a display and ultimately delivering it to automobile manufacturers as a total display that is close to zero display.

For this reason, if the transition from all digits "9" display to all digits "0" display is locked so that the total display cannot be changed to a lower display value while adding up on purpose, adjustments must be made at the meter factory. There is also the problem that it becomes impossible to carry out inspections.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a total counter that can prevent unauthorized operation of total display without interfering with counter adjustment and inspection.

[Means for Solving the Problems] The present invention provides a plurality of display wheels that are freely rotatable on a support shaft installed horizontally in a frame, and these display wheels are moved from a lower digit side to an upper digit side via a pinion. In a total counter that carries up in sequence, a dummy wheel is provided on the spindle to be freely rotatable at the side of the upper digit of the display wheel of the highest digit, and a dummy ring is attached to the side of the upper digit III of the display wheel of the highest digit. an engaging portion is provided on the lower digit side side surface of the dummy wheel, and an engaging receiving portion is provided on the lower digit side side surface of the dummy wheel, the engaging portion engages with the dummy wheel to cause the dummy wheel to rotate together when the highest digit display wheel rotates by a predetermined angle; A locking part is provided on the upper digit IFI1111 surface of the ring, and when the uppermost digit display wheel and the dummy wheel rotate together at a predetermined angle, the locking part locks the uppermost digit display wheel and the dummy wheel. It is provided with a stopper portion for locking.

[Function] With the above configuration, the engaging portion engages with the engagement receiving portion when the most significant digit display wheel is carried up from “9” display to “0” display, and from then on, the most significant digit The display wheel is carried up while rotating together with the dummy wheel. When the most significant digit display wheel again displays 9", the locking portion engages with the stopper section and the dummy wheel and the most significant digit display wheel are locked until the next time the display becomes 0.

[Example] Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

1 to 3 show an embodiment of the present invention. As shown in the figure, two support shafts 3 and 4 are horizontally installed in parallel between the left and right side plates 2 of the frame 1, and one The support shaft 3 rotatably supports a plurality of display wheels 5 on which numbers "0 to 9" are displayed, and the other support shaft 4 supports a plurality of carry wheels located between each display wheel 5. It supports a pinion 6 for free rotation, and includes continuous teeth 71 provided on the display wheel 5, intermittent teeth 8, and long teeth 9 provided on the pinion 6. By the well-known technique of engagement with the short teeth 10, the display wheel 5 is carried up sequentially from the lower digit to the upper digit via the pinion 6.

A dummy wheel 11 is freely rotatably supported on the support shaft 3 adjacent to the upper digit side of the highest digit display wheel 5, and the thrust of the dummy wheel 11 is regulated by a regulating member (not shown).

An engaging portion 12 is provided on the side surface of the highest digit display wheel 5 on the upper digit side to correspond to the display of "9" and protrudes in the axial direction, and on the side surface of the dummy wheel 11 on the lower digit side. An engagement receiving portion 13 is arranged to protrude in the axial direction so that the engagement portion 12 engages when the most significant digit display wheel 5 rotates by a predetermined angle θ1, for example, 36 degrees.

The engagement portion 12 is provided on the side surface of the dummy wheel 11 on the upper digit side.
A locking portion 14 is provided to protrude in the axial direction at a position substantially corresponding to a radiation Q passing through the frame 1, and a locking portion 14 is provided on the left side plate 2 of the frame 1 on the side opposite to the dummy wheel rotation direction side of the locking portion 14. A stopper portion 15 arranged so as to come into contact with or be close to
is bent in the axial direction.

Next, the operation of the above configuration will be explained.

First, the total counter is
All numbers from the digit display wheel 5 to the highest digit display wheel 5 are "9"
display, and the display wheel 5 of the lowest digit is set to an arbitrary display, for example, "5".
Assemble with the display "r999995".

In this state, as shown in FIG.
The engaging portion 12 provided on the highest digit display wheel 5 can be visually recognized from the "9" of the highest digit display wheel 5.
The engaging part 13 provided on the dummy ring 11 is arranged approximately corresponding to the display position "8", and the locking part 14 provided on the dummy ring 11 is arranged approximately corresponding to the display part position "8".
is arranged on one side of a stopper part 15 provided on the frame 1 so as to correspond to and correspond to substantially the same line Q as the engaging part 12.

Under the condition shown in FIG. 3(A), the display on the lowest digit display wheel 5 changes to "9" through adjustment and inspection at the meter factory.
'', all digits will be displayed as ``9'', resulting in a total display of '999999J.Furthermore, when the lowest digit display wheel 5 rotates and changes from ``9'' to ``0'', all digit display wheels 5 will be displayed.
It also rotates 36 degrees and is rooo.

The total display will be 00J. However, the dummy wheel 11 does not rotate, and in this state, as shown in FIG.
The engagement portion 12 is in a state of starting engagement with the engagement receiving portion 13. Further, since the dummy wheel 11 does not rotate, the locking portion 14 is arranged corresponding to the display of "0" on the most significant digit display wheel 5.

From the state shown in FIG. 3(B), the product is delivered to an automobile manufacturer with a total display value close to zero. Next, when the car is running, the digits are raised as usual, and after reaching the display of "099999", as the lowest digit display wheel 5 rotates, the engaging part 1
2 and the engagement receiving portion 13, the dummy wheel 11 also rotates and is carried up.

In this state, as shown in FIG. 3(C), the engaging portion 1
2 remains engaged with the engagement receiving part 13, and the locking part 14
remains in the state corresponding to the display of "0" on the most significant digit display wheel 5.

On the other hand, in an attempt to change the total display value by intentionally increasing the digits in the addition direction, all digit display wheels 5, including the highest digit display wheel 5, shifted from "9" display to "0" display, resulting in "0000" being changed.
Even if you try to deliberately set the total display value to a lower value by setting the total display value to ``00'' and increasing the digits, the display shown in Figure 3 ( As shown in D), the locking part 14 locks with the stopper part 15 and the most significant digit display @5 and the dummy wheel 11 are locked, so there is no worry that at least the total display of "rooooooo" will be added.

In this case, the stopper portion 15 determines the position at which the most significant digit display wheel 5 is locked, that is, at which position from the "9" display to at least the "O" display. Locking part 14
It can be set arbitrarily by changing the wall thickness and arrangement of the , and in short, the rotation angle θl of the most significant digit until the engagement part 12 engages with the engagement receiving part 13 and the rotation angle θl of the dummy transport 11 start rotating. The angle θ3, which is the sum of the rotation angle θ2 from the time when the rotation angle is rotated until the lock is locked, may be set so that the angle θ3 satisfies the following condition.

360'≦θ3≦396゜Also, dummy import 11 has r9999 due to normal driving.
Roooo from the display 99J.

An alarm coloring section 16 is provided in consideration of the possibility that the dummy port 11 is locked when attempting to shift to the display "O", and the alarm coloring section 18 is made visible from the display window 17 when the dummy transport 11 is locked.

In this way, in this embodiment, the display changes from '999999J to rooooooo, depending on the play between the engagement part 12 of the highest digit display wheel 5 and the engagement receiving part 13 of the dummy wheel 11.
Normal carry is allowed only once after displaying ``r'999999'', and the second time carrying is carried out from ``r'999999'' to ``0''.
Because the locking part 14 of the dummy wheel 11 and the stopper part 15 of the frame 1 are prohibited from performing a normal carry after the display of 00000J, the adjustment and inspection process at the meter factory is hindered. It is possible to reliably prevent illegal manipulation of the total display value that is intentionally performed without causing trouble.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention.For example, the shapes of the engaging part, the engaging receiving part, the locking part, and the stopper part .

The dimensions etc. may be selected as appropriate, and the stopper portion may be provided as a separate member on the frame.

Also, in order to make the explanation easier to understand, in Fig. 3 (A), the case where the digit 1 of the engaging part corresponds to the most significant digit "9" is shown, but the position of the engaging part is arbitrary. The engagement receiving portion, the locking portion, and the stopper portion may be arranged at positions corresponding to the engagement portion positions. Further, although the outer pinion type total counter has been described as an example, the present invention can also be applied to an inner pinion type total counter with the same structure. An example of this will be explained with reference to FIGS. 4 and 5. In a well-known inner pinion type total counter in which a holder 19 with a carry pinion 6 supported pivotally is disposed between each display wheel 5, the top Digit display wheel 5
An engaging portion 12A is integrally provided with the boss portion 20 on the side surface of the uppermost digit, and a dummy wheel 11A is arranged on the uppermost digit side of the highest digit display wheel 5. A boss hole 22 that is externally fitted onto a stepped portion 21 provided on the entire circumference to enable free rotation and restrict thrust, and into which the boss portion 20 is fitted into the side surface 22 of the dummy wheel 11A;
A fan-shaped hole-shaped engagement receiving part 13A communicating with the dummy wheel 11A is provided, a locking part 14 is provided on the upper girder side of the dummy wheel 11A, and a stopper part 15 is provided in the frame body 1. As shown in FIG. Similar to the pinion type, the play between the engagement part 12A of the highest digit display wheel 5 and the engagement receiving part 13A of the dummy wheel 11A causes the display to be ``r999999''.
” is displayed and normal carry is performed only once, and the highest digit display wheel 5 and dummy wheel 11A rotate together by the engagement between the engaging portion 12A and the engaging receiving portion 13A, 2
'000000' from the display '999999J'
Since the normal carry is carried out after the display is performed by locking the locking part 14 of the dummy wheel 11A and the stopper part 15 of the frame 1, the effect is similar to that of the outer pinion type total counter. has.

In addition to the illicit operation mechanism in the addition direction of the present invention, by combining the illicit operation mechanism in the subtraction direction known from, for example, Japanese Utility Model Publication No. 63-8996 or U.S. Pat. No. 3,667.671. , the total counter can eliminate unauthorized operations in both forward and reverse directions.

[Effects of the Invention] The present invention includes a plurality of display wheels that are rotatably provided on a support shaft installed horizontally in a frame, and these display wheels are sequentially rotated from a lower digit side to a higher digit side via a pinion. In the total counter to be raised, a dummy wheel is provided on the upper digit side of the display wheel of the highest digit so as to be freely rotatable on the support shaft, and an engaging portion is provided on the upper digit IFI1m surface of the highest digit display wheel. , an engagement receiving part is provided on the lower digit side side surface of the dummy wheel, the engagement receiving part is engaged with the engaging part to cause the dummy wheel to rotate together when the highest digit display wheel rotates by a predetermined angle; A stopper that is provided with a locking portion on a side surface, and that the locking portion locks the highest digit display wheel and the dummy wheel when the highest digit display wheel and the dummy wheel rotate together at a predetermined angle on the frame. It is possible to provide a total counter that can prevent unauthorized operation of the total display without interfering with counter adjustment and inspection.

4,

[Brief explanation of drawings]

Figures 1 to 3 show one embodiment of the present invention, with Figure 1 being an exploded perspective view, Figure 2 being a sectional view, and Figures 3 (A), (B), and (C)
)(D) is a schematic explanatory diagram showing the carry state, FIGS. 4 and 5 show other embodiments of the present invention, FIG. 4 is an exploded perspective view of the main part, and FIG. 5 is the main part. FIG. 1... Frame 3... Support shaft 5... Display wheel 6... Pinion 11, 11A... Dummy wheel 12, 12A... Engagement part 13, 13A... Engagement receiving part 14 ...Locking part 15...Stopper part

Claims (1)

[Claims] (1) In a total counter in which a plurality of display wheels are freely rotatable on a support shaft installed horizontally on the frame, and these display wheels are sequentially carried from the lower digit side to the higher digit side via a pinion. , a dummy wheel is provided on the upper digit side of the display wheel of the highest digit and is freely rotatable on the support shaft, an engaging portion is provided on the side surface of the highest digit display wheel on the higher digit side, and the dummy wheel An engagement receiving part is provided on the side surface of the lower digit, with which the engaging part engages to cause the dummy wheel to rotate together when the highest digit display wheel rotates by a predetermined angle, and is locked to the side surface of the dummy wheel on the upper digit side. a stopper portion is provided on the frame, and the locking portion locks the top digit display wheel and the dummy wheel when the top digit display wheel and the dummy wheel rotate together at a predetermined angle. A total counter characterized by: