JPH0363790A - 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 The present invention relates to an outer pinion type counter used in a travel distance meter, hour meter counter, etc. of an automobile.

[Prior art] - This type of counter has two parts between the left and right side plates of the frame.
The book's spindles are installed horizontally in parallel, and one spindle supports a plurality of display wheels at predetermined intervals so that they can freely rotate, and the other spindle has a display wheel placed between each display wheel for digit feeding. A pinion is provided, and long teeth and short teeth are alternately formed on this pinion, and the long teeth and short teeth mesh with continuous teeth formed on the entire periphery of the lower digit side of the upper digit side display wheel, and The teeth mesh with intermittent teeth formed, for example, at one location on the upper digit side periphery of the lower digit side display wheel. Then, when the rotational force is transmitted to the display wheel of the lowest digit by an appropriate rotation transmission means, each display wheel is sequentially rotated from the lower digit side to the higher digit side via the pinion for digit feeding. It is supposed to be done.

[Industrial Application Field] [Problem to be Solved by the Invention] The above-mentioned conventional technology requires a support shaft to support the pinion group in a freely rotatable manner, and requires the work of horizontally installing the support shaft in the frame. Moreover, since the pinion group and the display wheel group are assembled to support shafts installed separately horizontally on the frame, it is difficult to properly mesh the teeth of the pinion and the teeth of the display wheel, and this work is time-consuming. There was a problem.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a counter that can reduce the number of pinion support shafts installed horizontally on a frame, and can also provide a pinion at an appropriate position relative to the display wheel.

[Means for Solving the Problems] The present invention has a plurality of display wheels rotatably provided on a support shaft installed horizontally in a frame, and a girder located between each display wheel on the outside of the display wheels. In an outer pinion type counter equipped with a raising pinion, a cover is provided on the support shaft, and the cover has a part of the pinion cover on which the pinion group is covered,
Each of the pinions has a shaft portion on one side and a shaft hole on the other side, and adjacent pinions are located within a portion of the pinion cover, and the shaft portion of the pinion and the shaft hole are reversibly engaged. It is something that exists.

[Function] With the above configuration, the pinion group is covered in a part of the pinion cover in a connected state by engaging the shaft part of another pinion in the shaft hole of the pinion, and each pinion is covered in a part of the pinion cover. In this state, it rotates around the shaft fitted into the shaft hole.

[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 horizontally installed between the left and right side plates 2 of a frame 1, and "0 to 9" are placed on this support shaft 3. A plurality of display wheels 4 on which numbers are displayed are rotatably supported at predetermined intervals, and a support shaft 3
is provided with a cover 5, on which a pinion cover part 5A extends in the axial direction of the support shaft 3, and within the pinion cover part 5A, six groups of pinions for carrying are mounted,
This pinion 6 is formed with a shaft portion 6A on one side and a shaft hole 6B on the other side, and the shaft portions 6A of adjacent pinions 6 are rotatably engaged with the shaft hole 6B.

The display ring 4 has continuous teeth 7 formed on the entire periphery of the lower bent side surface, and two intermittent teeth 8 are formed on the upper digit side surface, and a stepped portion 9 is formed on the periphery of the display ring 4 excluding the intermittent teeth 8. Further, the tips of the continuous teeth 7 are formed one step lower than the circumferential surface of the display ring 4 so as to be at the same height as the stepped portion 9. Further, a boss portion 10 is formed at the center of the display wheel 4, and this boss portion 1
0 to maintain a predetermined interval between the display wheels 4. Also, the least significant digit is displayed l! A drive gear 11 is integrally engaged with the lower digit side of I4.

The pinion 6 has long teeth 12 and short teeth 13 formed alternately, and the pinion 6 is formed in the gap between the two adjacent display wheels 4.
The long teeth 12 and short teeth 13 of the pinion 6 mesh with the continuous teeth 7 of the upper digit side indicator wheel 4, and the long teeth 12 of the pinion 6 engage with the lower digit side indicator wheel 4.
It is formed to mesh with the intermittent teeth 8. When the indicator wheel 4 rotates, the pinion 6 is prevented from rotating by two adjacent long teeth 12 coming into contact with the circumferential surface of the stepped portion 9 as shown in FIG. intermittent tooth 8
When the pinion 6 reaches the pinion-off 6 position, the pinion 6 is rotated by a predetermined angle due to the engagement between the intermittent teeth 8 and the long teeth 12, and the display wheel 4 on the upper digit side is shifted and rotated. Further, a boss portion 14 is integrally provided on one side of the pinion 6, and a shaft 6 having a smaller diameter than the boss portion 14 is attached to the end of the boss portion 14.
A is provided in a protruding manner, and the other side of the pinion 6 is formed with a shaft hole 6B in which the shaft portion 6A engages in a freely rotatable manner.

The cover 5 has a side plate 15 located on the upper digit side of the display wheel 4 of the uppermost digit and inserted through the support shaft 3, and this curved plate 1
5 is a cylindrical pinion cover part 5A that covers the pinion 6m.
is integrally extended along the axial direction of the support shaft 3, and a plurality of curved cover parts 16 are integrally formed on both ends of the pinion cover part 5A in the circumferential direction corresponding to the spaces between the respective display wheels 4. A disc-shaped holding plate 17 is arranged in series and is further located between each display wheel 4.
are formed integrally with each corresponding curved cover portion 16 parallel to the surface measuring plate 15, and each retaining plate 17. Shaft holes 18 through which the support shafts 3 are inserted are formed in the side plates 15, respectively. In this case, the curved cover part 16 has a T-shaped flange shape as shown in FIG. The outer circumferential surface of the display ring 4 and the curved cover portion 16 are formed flush with each other. Further, a notch 19 for receiving the pinion 6 is formed at the end of the pinion 61111 of the holding plate 17, and the inside of the pinion cover portion 5A is formed in a hollow shape. Further, the holding plate 17 is formed so as to be located approximately at the center of the width of the long teeth 12 and short teeth 13, which are the teeth of the pinion 6. Also, surface measurement plate 1
A shaft hole 20 is formed in the shaft hole 20 corresponding to the shaft portion 6A of the pinion 6, and the shaft portion 6A of the pinion 6 folded at the uppermost position rotatably engages with this shaft hole 20. shaft hole 6
The shaft portion 6A of the pinion 6 of the next lowest digit is rotatably engaged with B, and in this way, the shaft portion 6A of the pinion 6 and the shaft hole 6B are fitted in order, and the pinion cover part 5 is inserted. It is covered.

When assembling, first insert the indicator wheel 4 of the highest digit into the side plate 15 and retaining plate 1 from the direction perpendicular to the axial direction as shown by the arrow.
7, and insert the support shaft 3 through its shaft hole 18 and boss portion 10, and then fit the shaft portion 6A of the pinion 6 of the highest digit into the shaft hole 20 of the open-face plate 15 from inside, and then display By assembling the wheels 4 and pinions 6 alternately and in sequence, the pinions 6 are assembled in a connected state by engagement with the shaft hole 6B and the shaft portion 6A, and each of the display wheels 4 is also assembled in each holding state. It is supported by the support shaft 3 by sequentially inserting it between the plates 17 from the upper girder side. Further, the cover 5 is integrally formed with an engagement receiving portion 21 for preventing rotation of the cover, and this engagement receiving portion 21
is engaged with a shaft 22 fixed to the frame 1 or a part of the frame 1 to prevent the cover 5 from rotating.

Note that a lid member 5B is fixed to the opening of the lowest digit of the pinion cover part 5A by means of fitting or adhesion, and the pinion 6 of the lowest digit is fixed to the shaft portion 6A protruding from the lid member 5B.
is hindered. In addition, 23 is a display board arranged on the front side of the counter mechanism including the display wheel 4, and this display board 23
A display window 24 for reading a display portion such as numbers provided on the circumferential surface of the display wheel 4 is formed in a cutout.

In the above embodiment, the cover 5 is provided on the support shaft 3, and the pinion cover portion 5 formed on the cover 5 is
Since the pinions 6 are connected to each other so as to be able to freely rotate by fitting the shaft portion 6A and the shaft hole 6B while the pinions 6 are mounted inside A, the number of supporting shafts for supporting the conventional pinion group is reduced. , there is no need to fix this support shaft to the frame. In addition, the cover 5 is assembled as a standard item, and the pinion 6 is assembled by sequentially assembling the pinion 6 to the pinion cover part 5A and the indicator ring 4 is assembled between the retaining plates 17 of the cover.
and the display wheel 4 can be assembled in a proper relationship 9
In addition, since the pinion 6 group can be covered by the pinion cover part 5A, and the gap between the display wheels 4 corresponding to the display window 24 of the display board 23 can be covered by the curved cover part 16, it is possible to cover the pinion 6 group by an external operation. Intentional subtraction of the displayed value can be prevented, and in addition, by forming the cover 5 with a light-shielding material, leakage of illumination light from between the display wheels 4 can be shielded.

5 and 6 show a second real bear example of the present invention, and a first real bear example.
The same reference numerals are given to the same parts as in the embodiment, and the description of the same parts is omitted. In this embodiment, the retaining plate 17 in the first embodiment is removed, and in this embodiment, the cover 25 is completely replaced. is formed into a substantially cylindrical shape, and is located on the upper digit side of the display wheel 4 of the highest digit, and into which the support shaft 3 is inserted.
8 and a shaft hole 20 into which the shaft portion 6A of the pinion 6 is inserted, and a pinion cover portion 5A and a curved cover portion 16 are integrally formed into a substantially cylindrical shape from this side plate 15. This curved cover portion 16 is formed by a curved connecting piece excluding at least the window portion i6A formed by cutting out the display portion of each display wheel 4.

In addition, a lid member 5 is provided in the opening portion of the cover 25 on the lowest digit side.
B is fixed by means such as fitting, welding, or adhesion, and the shaft portion 6A protruding from the inner surface of the lid member 5B is formed so as to be inserted into the shaft hole 6A of the pinion 6 located at the lowest digit. ing.

An engagement receiving portion 21 for preventing rotation of the cover 25 is integrally formed at a suitable location on the outer peripheral surface of the curved cover portion 16 of the cover 25, and this engagement receiving portion 21 is locked to the frame 1. It is configured to do so.

Therefore, when assembling, it is only necessary to assemble the support shaft 3 to the cover 25, and assemble the indicator wheel 4 and pinion 6 sequentially from the axial direction in the same manner as in the first embodiment. It is possible to eliminate the support shaft for supporting the frame, and the work of fixing this support shaft to the frame can be eliminated.

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, as shown in FIG. 7, the cover 26 is formed by the side plate 15 and the pinion cover part 5A, and the engagement receiving part 21 for holding the cover 26 to prevent rotation is formed on the outer peripheral surface of the side plate 15.
The cover 26 is fixed to the frame l by this receiving portion 21 so as to be prevented from rotating.

In addition, as shown in FIG. 8, the side plate 15 and the cylindrical pinion cover part 5A are made of synthetic resin that allows the cover 27 to be seen through.
and a cylindrical display wheel cover portion 28, the pinion cover portion 5A may entirely cover the 6th group of pinions, and the display wheel cover portion 28 may entirely cover the 4th group of display wheels. Note that 21 is an engagement receiving portion for holding the cover 27 against rotation.

[Effects of the Invention] The present invention has a plurality of display wheels rotatably provided on a support shaft installed horizontally on the frame, and a carry-up wheel located between the display wheels on the outside of the display wheels. In an outer pinion type counter equipped with a pinion, a cover is provided on the support shaft, and this cover has a part of the pinion cover on which the pinion group is covered, and each pinion has a shaft portion on one side and a shaft hole on the other side. Adjacent pinions are located within a portion of the pinion cover, and the shaft portion of the pinion and the shaft hole are engaged to be freely rotatable, and the pinion support is horizontally installed in the frame. It is possible to provide a counter in which the number of shafts can be reduced and the pinion can be provided at an appropriate position relative to the display wheel.

[Brief explanation of drawings]

1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a partially cutaway overall plan view, FIG. 2 is a cross-sectional plan view of essential parts, and FIG. 3 is an exploded perspective view. FIG. 4 is a vertical sectional view, FIGS. 5 and 6 are a second embodiment of the present invention, FIG. 5 is an exploded perspective view, FIG. 6 is a cross-sectional plan view, and FIGS. 7 and 8 are FIG. 3 is a perspective view showing another embodiment of the present invention. 1... Frame 3... Support shaft 4... Display wheel 5, 25.26.27... Cover 5A... Pinion cover part 6... Pinion 6 A... Reason part 6B...・Shaft hole

Claims (1)

[Claims] (1) Outer pinion type where multiple display wheels are freely rotatable on a support shaft installed horizontally on the frame, and a pinion for carry is located between each display wheel on the outside of the display wheels. In the counter, a cover is provided on the support shaft, and this cover has a pinion cover part in which a group of pinions is covered, and each pinion has a shaft part on one side and a shaft hole on the other side, and each pinion has a shaft part on one side and a shaft hole on the other side. A counter, wherein a pinion is located within the pinion cover portion, and a shaft portion of the pinion and the shaft hole are engaged to be freely rotatable.