JPH03225581A - 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 is applied to an outer pinion type or inner pinion type total counter used in a travel distance meter, hour meter, etc. of an automobile.

[Prior Art] In general, this type of counter has a plurality of display wheels rotatably installed on a support shaft installed horizontally on a frame, and a display wheel is provided between each display wheel, or on another support shaft in the case of an outer pinion type. In the inner pinion type, there is a pinion installed in a pinion holder interposed between the display wheels, and continuous teeth are provided on the lower digit side of each display ring, and two teeth are provided on the upper digit side. A stepped portion is provided around the entire circumference, leaving a valley between the intermittent teeth, and the pinion has an even number of teeth, and the long teeth and the G
EL d^Mfu, muh? The short teeth are arranged alternately, and when the lowest digit display wheel rotates, the pinion has these short teeth placed on the face of the stepped part. In the case of the outer pinion type, the adjacent long tooth slides in a restrained state in contact with the display ring circumferential surface, and in the case of the inner pinion type, in contact with the inner circumferential surface of the stepped portion. 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 trough. As it rotates further, the next short tooth is guided to the step surface, and the long tooth comes off the trough, and the pinion becomes inhibited again. Therefore, the rotation of the pinion causes the display wheel on the upper digit side to be carried up by one display.

In this way, the display axis is sequentially carried 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, r999.
999" is displayed, the next carry will result in "o
.

The display returns to 0000J, and is configured such that the transition from displaying all digits of "9" to displaying all digits of "0" can be performed any number of times.

[Problems to be Solved by the Invention] In the above-mentioned conventional technology, a plurality of display axes 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". Therefore, the lowest digit display wheel of the total counter of a used car is intentionally rotated at high speed by a suitable means such as a motor to change the display from all digits "9" to all digits "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 an act of intentionally changing the display value to a lower display value, the I-tal counter is prevented from shifting from displaying all digits of "9" to displaying all digits as "O". It may be possible to provide a locking means.

However, although there is a request from car manufacturers to have meters delivered with a total display or a value close to zero, meter factories are unable to adjust and inspect the counters so that the integrated value is the same as the vehicle's total value. In some cases, the value exceeds the manufacturer's request, 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 "0". ' display, and finally deliver it to automobile manufacturers as a total display 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.

Therefore, the present invention eliminates the need for counter adjustment and inspection.
±! ! ＠ S〉 戈 NER → TO 〉 し pu1house /1- − λA +1.1C; /F'l
“The purpose is to provide a total counter that can be used to prevent incorrect operations.

[Means for Solving the Problems] The present invention provides a plurality of display wheels rotatably provided on a support shaft installed horizontally in a frame, and continuous teeth are provided on the lower digit side of the display wheel, and continuous teeth are provided on the upper digit side of the display wheel. Intermittent teeth and a stepped portion formed around the entire circumference leaving the troughs of the intermittent teeth are provided, and these display axes are connected from the lower digit side to the upper digit side via a pinion that is provided with alternating long teeth and short teeth. In a total counter that carries up digits one after another, a lock pinion is provided on the upper digit side of the display wheel of the highest digit, and this lock pinion engages for the first time with the intermittent teeth of the lowest digit display ring. , long teeth and short teeth are provided to allow rotation of the highest digit display wheel, and two teeth are provided with the intermittent teeth.
A stopper portion is provided to prohibit the second engagement.

The present invention has the above-mentioned configuration, so that the lowest digit display wheel is decoyed to Δ.
1. , /7 1−” −−dri Δ
1 β tumor n p By locking with the stopper part, the highest digit display wheel is prohibited from being carried up from "9" display to "0" display a second time.

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

1 to 4 show an embodiment of the present invention, and as shown in the figures, two support shafts 3.4 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 continuous teeth 7 are provided on the lower digit side of the indicator wheel 5, and two intermittent teeth 8 and this intermittent tooth 8 are provided on the upper digit side. The pinion 6 is provided with a stepped portion 10 formed around the entire circumference, leaving a valley portion 9 in between, and the pinion 6 has long teeth 11 and short teeth 12 formed short by notching in the axial direction by the thickness of the stepped portion 10. An even number of sheets are provided alternately. By using such a well-known technique, the display wheel 5 is sequentially carried from the lower digit to the upper digit via the pinion 6.

A lock pinion 13 is disposed on the upper digit side of the uppermost digit display wheel 5 and is freely rotatably supported on the support shaft 4, and the thrust of the lock pinion 13 is regulated by a regulating member (not shown).

The lock pinion 13 is provided with one long tooth 11, a pair of short teeth 12 disposed on both sides of the long tooth 11, and a pair of stopper parts 14 disposed on both sides of the short tooth 12. 6 Next, the operation of the above structure will be explained.

First, set the total counter to "9" from the second digit display wheel 5 to the most significant digit display wheel 5 as usual.
display, and the lowest digit display wheel 5 is displayed as an arbitrary display, for example "5".
Assemble the total display as r99999'z. In this state, as shown in FIG. 4(A), the display portion "9" of the highest digit display wheel 5 is visible through the display window 16 of the display board 15, and the highest digit display wheel 5 is visible. The intermittent teeth 8 provided on the lock pinion 13 are in a meshing state with the short teeth 12 of the lock pinion 13.

Under the condition shown in FIG. 4(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” and the total display will be “999999”. Furthermore, when the lowest digit display wheel 5 rotates and changes from "9" display to "0" display, all digit display wheels 5
It also rotates 36 degrees and is rooo.

The total display will be "00". In this case, the lowest digit display wheel 5 also has intermittent teeth 8 and long teeth 11. It rotates by meshing with the short teeth 12. In this state, as shown in FIG.
The intermittent teeth 8 are visible from the long teeth 11.
, the meshing with the short teeth 12 is completed.

From the state shown in Fig. 4 (B), the total display is close to zero and the value is delivered to the automobile manufacturer.After the 9th carry is carried out as usual by driving the car and the display does not reach '099999J, Fig. 4 shows the following. As shown in (C), one short tooth 12 of the lock pinion 13 is placed on the side surface of the stepped portion 10, and the long tooth 11 is placed on the circumferential surface of the display ring 5 and slides into contact with the top digit. The carry of the display wheel 5 is carried out as usual.

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 including the highest digit display wheel 5 shifted from "9" display to "0" display.
Even if you try to intentionally set the total display value to a lower total display value by increasing the digits to a total display value of 0, when the highest digit display wheel 5 changes from "9'" display to "0" display, As shown in D), the stopper portion 14 of the lock pinion 13 is engaged with the circumferential surface of the display wheel 5, and the highest digit display wheel 5 and the lock pinion 13 are locked.
There is no need to worry about the carry being carried up to the total display of ooooj.

In this embodiment, the intermittent teeth 8 of the highest digit display ring 5 mesh with the long and short teeth 12 of the lock pinion 13, so that the display changes from "r999999" to "0OOOO".
Allows normal carry to be performed only once after displaying OJ, and then performing r from displaying "r999999" for the second time.
The highest digit display wheel 5 is operated by the stopper part 14 of the lock pinion 13 to carry up the display to oooooo,, +.
Since this is prohibited by the locking action of the meter, it is possible to reliably prevent intentional unauthorized manipulation of the total display value without interfering with the adjustment and inspection processes at the meter factory.

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, although the outer binion type total counter has been described as an example, the present invention can also be applied to an inner binion type total counter with the same structure. That is, as shown in FIG. 5, the lock pinion 13 is pivoted to the uppermost digit side of the highest digit display wheel 5A. A pinion holder 17 is disposed, and the long teeth 11. Short tooth 12 and stopper part 14
The stopper part 14 may be installed in the same way as the outer binion type to perform the same action.
It is sufficient if the structure is such that it is engaged with the inner circumferential surface of A and locked.

Further, in addition to the unauthorized operation mechanism in the addition direction of the present invention, for example, Japanese Utility Model Publication No. 63-8996 or U.S. Pat.
By combining the tampering mechanism in the subtraction direction known in No. 667.671, the total counter can eliminate tampering in both the forward and reverse directions. [Effects of the Invention] The present invention provides a frame A plurality of display wheels are freely rotatably installed on a support shaft installed horizontally on the display wheel, continuous teeth are provided on the lower digit side of the display ring, and the entire display wheel is provided with continuous teeth on the upper digit side, leaving the intermittent teeth and the valleys of the intermittent teeth on the upper digit side. In a total counter that is provided with a stepped portion formed around the periphery, and carries these display wheels sequentially from the lower digit side to the upper digit side via a binion formed by alternately providing long teeth and short teeth, A lock pinion is provided on the upper digit side of the display wheel of the highest digit, and this lock pinion has long teeth that engage the intermittent teeth of the highest digit display wheel for the first time to allow rotation of the highest digit display wheel. and short teeth are provided, and 2 with the intermittent teeth.
The total counter is provided with a stopper part that prohibits the second engagement, and can prevent unauthorized operation of the total display without causing any trouble in adjusting or inspecting the counter.

[Brief explanation of drawings]

1 to 4 show one embodiment of the present invention, FIG. 1 is a perspective view showing the state in which the lock pinion is assembled, FIG. 2 is a partially cutaway front view, and FIG. 3 is a front view of the lock pinion. Perspective view, 4th
Figures (A), (B), (C), and (D) are schematic explanatory views showing a carry state, and Fig. 5 is a perspective view showing another embodiment of the present invention. 1... Frame 3... Support shaft 5.5A... Display wheel 6... Binion 7... Continuous tooth 8.8A... Intermittent tooth 9.9A... Valley portion 10, 1OA... ...Step part 11...Long tooth 12...Short tooth 14...Stopper part Patent applicant Nippon Seiki Co., Ltd. agent

Claims (1)

[Claims] (1) A plurality of display wheels are rotatably provided on a support shaft installed horizontally on the frame, continuous teeth are provided on the lower digit side of the display ring, and intermittent teeth are provided on the upper digit side, and the valleys of the intermittent teeth are provided on the upper digit side. These display wheels are sequentially carried from the lower digit side to the upper digit side via a pinion which is provided with alternating long teeth and short teeth. In the total counter, a lock pinion is provided on the upper digit side of the display wheel of the highest digit, and this lock pinion engages with the intermittent teeth of the highest digit display wheel for the first time to control the rotation of the highest digit display wheel. A total counter characterized in that it is provided with permissible long teeth and short teeth and also provided with a stopper portion that prohibits second engagement with the intermittent teeth.