JPH0363786A - Counter - Google Patents

Abstract

PURPOSE:To prevent the subtracting operation of a display value by providing a holding plate between display wheels and forming a cover part and a pinion cover part on this holding plate as one body. CONSTITUTION:A holding plate 6 is provided between display wheels 4, and a cover part 8 with which at least the gap between display wheels 4 corresponding to display windows is covered is formed in the peripheral edge of the holding plate 6 as one body, and a pinion cover part 10 with which a pinion 9 is covered is formed in the peripheral edge of the holding plate 6 as one body in connection with the cover part 8, and the length in the axial direction of the pinion cover part 10 is approximately equalized to the width of a display shaft. Since at least the gap between display wheels 4 corresponding to display windows is covered with the cover part 8 and the pinion 9 is covered with teh pinion cover part 10, the subtracting operation of the display value is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is used in travel distance meters, hour meter counters, etc. of automobiles. This invention relates to an outer binion type counter.

[Prior art] Generally, this type of counter has two parts between the left and right side plates of the frame.
The book's spindles are horizontally arranged in parallel, the center bosses of the plurality of display wheels are inserted into one spindle, and each display wheel is supported freely around the spindle at predetermined intervals, and the other spindle is A pinion for digit feeding is provided on the shaft between the display wheels, and long teeth and short teeth are formed alternately on this pinion. The long teeth mesh with continuous teeth formed on the peripheral edge, and the long teeth mesh with intermittent teeth formed at, for example, one location on the upper digit side periphery of the lower digit side display shaft. When the rotational force is appropriately transmitted to the lowest display wheel by the rotation transmission means, each display wheel is sequentially rotated from the lower digit side to the higher digit side via the shift pinion. It has become. Further, a display board having a display window is provided above the counter, and the numbers on the display wheel can be visually read through the display window.

[Problems to be Solved by the Invention] In the above-mentioned conventional technology, since the binion and each display ring are exposed, it is difficult to intentionally display the display ring by manipulating the interlocking part of the teeth between the binion and the display ring from the outside. It was not possible to prevent the act of subtracting the value.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an outer binion type counter that can prevent a display value from being subtracted.

[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 a girder located outside of the display wheels between each display wheel. In an outer binion type counter equipped with a raising binion, a holding plate is provided between each display axis, and a cover is provided on the periphery of the holding plate to cover at least the gap between the display wheels corresponding to the display window of the display plate. At the same time, a pinion cover part that covers the binion is formed integrally with the cover part on the peripheral edge of the holding plate, and the length of this pinion cover part in the axial direction is equal to the width of the indicated shaft. It is almost the same as .

[Function] With the above configuration, since at least the area between the display wheels corresponding to the display window is covered by the cover part, and the pinion is covered by the pinion cover part continuous with the cover part, subtraction operation of the displayed value is prevented. can.

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

1 to 4 show a first embodiment of the present invention, and as shown in the figures, a support shaft 3 is installed horizontally between the left and right side plates 2 of a frame 1, and this support shaft 3 has a diameter of 0 to 9". A plurality of display wheels 4 on which numbers are displayed are inserted, and a cylindrical boss portion 5 is formed in the center of the display wheels 4. Each display ring 4 is inserted through the boss portion 5 through the support shaft 3. It is supported on a support shaft 3 so as to be freely rotatable at predetermined intervals, and a holding plate 6 made of synthetic resin is provided between each indicator ring 4, and a gap between each indicator ring 4 is provided at the periphery of the main holding part 7 of this holding plate 6. An annular cover part 8 is integrally formed to cover the carry pinion 9, and a pinion cover part 10 is integrally formed continuously with the cover part 8 to cover the carry pinion 9.

The display ring 4 has continuous teeth 11 formed on the entire periphery of the lower digit side measuring surface, two intermittent teeth 12 are formed on the upper digit side measuring surface, and a stepped portion 13 is formed on the periphery except for the intermittent teeth 12. ing. Further, a drive gear 14 is integrally connected to the lower fold of the display shaft 4 of the lowest digit.

The holding plate 6 has a main holding part 7 having a disk shape with the same diameter as the marking M4, and a cylindrical part 15 through which the support shaft 3 is inserted is integrally provided in the center of the main holding part 7 and protrudes in the axial direction. , this cylindrical portion 15 is formed to be slightly longer than the boss portion 5 of the display wheel 4. This makes it possible to assemble the indicator wheel 4 to the retaining plate 6 by inserting the boss part 5 into the cylindrical part 15, and to ensure an appropriate clearance for the indicator shaft thrust. Moreover, a notch recess 16 for assembling the binion 9 is formed in the binion (II!!@ part of each holding plate 6), and a pair of continuous parts extending in the axial direction of the support shaft 3 are provided at both ends of the notch recess 16. 17 is formed, and a binion holding part 18 is integrally formed at the axial end of the long throw part 17 in parallel with the main holding part 7 at a distance and extending outward from the outer peripheral surface of the indicator wheel 4. , an opening 19 for tooth engagement between the indicator wheel 4 and the pinion 9 is formed between the long throw section 17. Also, in the pinion holding section 18, a pinion shaft is formed in the axial direction of the main holding section 7. 20 is provided protrudingly, and an engagement recess 21 for fixing the holding plate to prevent rotation is formed at the edge of the main holding part 7. In this case, the main holding part 7 and the pinion holding part 18
The distance between the pinion 9 and the pinion 9 is approximately 1/2 of the width of the pinion 9.

Further, a T-flange-shaped annular cover part 8 is integrally formed on the periphery of the mold holding part 7, and a T-shaped flange-shaped annular cover part 8 is integrally formed on the periphery of the mold holding part 7.
An annular pinion cover portion 10 in the form of a mold flange is integrally formed. The annular cover portion 8 extends to both end positions of the notch recess 16 and is formed substantially around the entire circumference, and is located between each indicator wheel 4 to cover the gap between the indicator wheels 4. Further, the annular pinion cover portion 10 covers the circumference of the pinion 9, and extends in the axial direction by approximately the same dimension as the width of the indicator wheel 4, so that the pinion cover portions 10 of adjacent retaining plates 6 are almost in contact with each other. ing.

The pinion 9 is formed with long teeth 22 and short teeth 23 alternately, and in a state where it is freely rotatably supported on the pinion shaft 20, the long teeth 22 and the short teeth are formed when two adjacent display wheels 4 are in the open position. 23 meshes with the continuous tooth 11 of the upper folding indicator wheel 4,
The long teeth 22 mesh with the intermittent teeth 12 of the lower digit display ring 4.

As shown in FIG. 4, when the indicator wheel 4 rotates, this pinion 9 is prevented from rotating by the two adjacent lengths 822 coming into contact with the circumferential surface of the stepped portion 13, and the indicator va4 rotates once and the intermittent tooth When 12 reaches the 9-off position, the intermittent tooth 1
2 and the long teeth 22, the tooth portion of the binion 9 rotates by a predetermined angle by two teeth, and the display fi+4 on the upper digit side is shifted and rotated.

Further, a side plate 24 is provided on the upper digit side of the display wheel 4 of the highest digit, and this side plate 24 has a lid member 25 that covers the opening of the cylindrical part 15, the annular cover part 8, and the pinion cover part 10.
and is fixed to the support shaft 3. 26 is a display board arranged on the front side of the display wheel 4, etc.; 27 is the display board 26;
A notch is formed in the display window for reading the display value of each display wheel 4.

In the above configuration, when assembling it, the pinion 9 is assembled to the pinion shaft 20 of the holding plate 6, and the cylindrical portion 15 is marked with I! The boss portion 5 of 4 is externally fitted and the continuous teeth 11 and long teeth 22 . The cylindrical portion 15 of the holding plate 6 is inserted into the support shaft 3 in this set state, and the two pinions 9 are inserted through the notch recess 16 by sequentially assembling them in the same set state. The continuous teeth 11 of the display ring 4 are brought into contact with the circumferential surface of the stepped portion 13 of the display ring 4. In addition, each holding plate 6
is prevented from rotating by engaging each engagement recess 21 with a shaft 28 fixed to the frame 1 or a part of the frame 1. As a result, the gap between the indicator wheels 4 is covered by the annular cover part 8 integrally formed with the holding plate 6, and the pinion 9 is covered by the annular pinion cover part 10 which is continuous with the cover part 8. Further, a lid member 25 is fixed to the opening of the pinion cover section 10 on the lowest digit side.

As described above, in the above embodiment, the holding plate 6 is provided between each display Va4, and the cover part 8 and pinion cover part 10 are integrally attached to this holding plate 6, so that there is no space between each display wheel 4. By assembling the retaining plate 6, the cover part 8
This covers the gap between the display ff1a4 and also covers the binion 9, making it possible to prevent the display value from being subtracted by an external operation. Furthermore, by forming the cover portion 8 from a light-shielding material, it is possible to block illumination light that enters the field of view through the display rings.

In addition, in this embodiment, the retainer plate 6 is assembled as a standard product,
Since the pinion shaft 20 of the holding plate 6 holds the pinion 9 and the cylindrical portion 15 holds the indicator wheel 4, the pinion 9 and the indicator wheel 4 can be assembled at appropriate positions.

5 to 7 show a second embodiment of the present invention, and will be described in detail by assigning the same reference numerals to the same parts as in the above embodiment and omitting explanations of the same parts. In this example, the holding plate 6A is transparent. The annular cover part 8A formed on the periphery of the mold holding part 7 is made of synthetic resin and has an axial length approximately equal to the width of the display ring 4, and is extended to cover the circumferential surface of the display ring 4. This allows the annular cover part 8A to display @
4, and the pinion 9 is almost completely covered by the pinion cover portion 1o, thereby reliably preventing the displayed value from being intentionally subtracted by an external operation. In this case, since the cover part 8A is transparent, the display @4
You can see through the numbers.

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. The cover portion may be formed so as to cover at least the area between the display wheels corresponding to the display window. Therefore, as shown in FIG. 8, the nine groups of pinions may be held on a support shaft 29 installed horizontally between the left and right open plates 2 of the frame 1 as in the conventional case, and in this case, the holding plate is rotated by the pinion cover. Since it is in a stopped state, there is no need for a retaining plate fixing structure. Further, as shown in FIG. 9, a cover portion 8B of the holding plate 6B may be provided to cover the area corresponding to the display window 27 and its vicinity.Also, in the case where the holding plate is made of transparent synthetic resin, It is also possible to mix a pigment into a resin to make it colored and transparent.Also, the cylindrical part 15 does not necessarily need to be provided, but if it is provided, it may be provided toward the upper fold as shown in FIG. Similarly, the pinion shaft 20 may also be provided toward the upper digit.

Further, the retaining plate fixing structure may be formed by abutting a part of the retaining plate with the inner surface of the frame.

[Effects of the Invention] The present invention provides a plurality of display wheels that are freely rotatable on a support shaft installed horizontally on a frame, and a carry pinion that is located outside of the display wheels between each display wheel. In an outer binion type counter, a retainer plate is provided between each display ring, and a cover portion is integrally formed on the periphery of the retainer plate to cover at least the gap between the display wheels corresponding to the display window of the display plate. At the same time, a pinion cover part that covers the binion is continuously formed integrally with the cover part on the peripheral edge of the holding plate, and the length of this pinion cover part in the axial direction is approximately the same as the width of the display shaft. By doing so, it is possible to provide a counter that can prevent the display value from being subtracted in an outer binion type counter.

9... Binion 10... Pinion cover part

Claims (1)

[Claims] (1) A plurality of display wheels are freely rotatable on a support shaft installed horizontally on the frame, and a pinion for carrying is provided between each display wheel and located outside of the display wheels. In an outer pinion type counter, a holding plate is provided between each display wheel, and a cover portion is integrally formed on the periphery of the holding plate to cover at least the gap between the display wheels corresponding to the display window of the display board. , a pinion cover part that covers the pinion is continuously and integrally formed with the cover part on the peripheral edge of the holding plate, and the length of the pinion cover part in the axial direction is almost the same as the width of the display shaft. counter.