JPH0363789A - 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 [Field of Industrial Application] 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] Generally, 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. In this case, - In boat fishing, a step is formed on the periphery of the upper digit side of the indicator wheel, excluding the intermittent tooth portion, and when the indicator wheel rotates, the two adjacent long teeth of the pinion are exposed to the step. Rotation of the pinion is prevented by contacting the circumferential surface of the part, and when the indicator wheel on the lower digit side rotates once and the intermittent teeth of this indicator wheel reach the pinion position, the pinion is moved to a specified position by the engagement between the intermittent teeth and the long teeth. The angle is rotated and the display wheel on the upper digit side is rotated.

[Problems to be Solved by the Invention] This type of counter is provided with a pinion for digit feeding on the outside between each display wheel, and the teeth of this pinion are brought into mesh with the teeth of two adjacent display wheels. Therefore, a gap of a predetermined width is formed between each display ring. For this reason, there has been a problem in that the display value can be easily subtracted intentionally by operating the meshing portion of the teeth between the pinion and the display wheel from the outside.

Therefore, an object of the present invention is to provide a counter that can prevent the displayed value from being intentionally subtracted.

[: Means for Solving Problem 1] The present invention has a plurality of display wheels rotatably provided on a support shaft installed horizontally in a frame, and a display ring located between the display wheels on the outside of the display wheels. In an outer pinion type counter, which is equipped with a carry pinion and in which the displayed value of the display wheel is visually read through the display window of the display board, a transparent protective cover is provided on the support shaft, and the pinion A pinion cover part that covers the group and an indicator wheel cover part that covers at least a portion of the indicator wheel corresponding to the indicator window are integrally provided in a continuous state.

[Function] With the above configuration, the pinion group is covered by the pinion cover part, and the display wheel cover part continuous with the pinion cover part covers at least the part of the display part corresponding to the display window, so the displayed value is intentionally subtracted. protected from manipulation.

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

1(A)(B), FIG. 2, FIG. 3, and FIG. 4 show the first embodiment of the present invention. Support shafts 3.3A are arranged horizontally in parallel, and one support shaft 3 supports a plurality of display wheels 4 with numbers from O to 9'' displayed at predetermined intervals so as to be freely rotatable, and the other support shaft 3. A pinion 5 for digit feeding is provided on the shaft 3A between the display wheels 4, and a transparent protective cover 6 is provided on the support shaft 3.3A.
A pinion cover section 6A that covers the group and an indicator wheel cover section 6B that covers the four groups of indicator wheels are continuously and integrally provided.

The display ring 4 has continuous teeth 7 formed on the entire periphery of the side surface on the lower digit side, and two intermittent teeth 8 on the side surface on the upper digit side. The tip of the continuous tooth 7 has an indicator ring 4 at the same height as the stepped portion 9.
It is formed one step lower than the peripheral surface of. Further, a cylindrical boss portion 10 is formed at the center of the display wheel 4, and this boss portion 10
Thus, the distance between the display wheels 4 is maintained at a predetermined distance. Further, a drive gear 11 is integrally connected to the lower digit side of the display wheel 4 of the lowest digit.

The pinions 5 have long teeth 12 and short teeth 13 formed alternately, and a hollow boss portion 14 is integrally formed on the side, that is, in the axial direction of the support shaft 3A, so that the intervals between the pinions 5 are maintained. In the gap between two adjacent display wheels 4, the long teeth 12 and short teeth 13 mesh with the continuous teeth 7 of the upper digit display ring 4, and the length m12 engages with the intermittent teeth 8 of the lower digit display ring 4. They are formed to interlock. This pinion 5 is the display wheel 4
During rotation, two adjacent long teeth 12 come into contact with the circumferential surface of the stepped portion 9, as shown in FIG. When reaching , the pinion 5 is rotated by a predetermined angle due to the engagement of the intermittent l1I8 and the long teeth 12, and the display wheel 4 on the upper digit side is rotated.

The protective cover 6 is made of a transparent synthetic resin or a material mixed with pigment and is transparent, and is located on the upper digit side of the display wheel 4 of the uppermost digit and has a side surface that is inserted into the support shaft 3.3A. 15, a cylindrical pinion cover part 6A that covers the pinion 5 details is integrally extended along the axial direction of the support shaft 3A, and both circumferential end edges of this pinion cover part 6A are provided on the side surface part 15. A curved display wheel cover portion 6B that covers the four groups of display wheels is integrally provided in each of the display wheels 4 and 4.
The disc-shaped holding part 16 located in the dark is the display ring cover part 6B.
are formed integrally with and parallel to the side surface portion 15, and each holding portion 16. A shaft hole 17 through which the support shaft 3 is inserted is formed in the side surface portion 15, and a shaft hole 17A into which the support shaft 3A is inserted is formed in the side surface portion 15. In this case, the display wheel cover part 6
B is formed to cover approximately 1/2 of the circumference of the display wheel 48 yen, and a notch recess 18 for housing the pinion 5 is formed at the end of the holding portion 16 on the pinion 5 side, and the pinion cover The inside of the portion 6A is formed in a hollow shape. Further, the holding portion 16 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 tooth portions of the pinion 5.

When assembling, first insert the ends of the support shafts 3° 3A into the shaft holes 17 and 17A of the side surface 15 of the protective cover 6, and then insert the display ring 4 of the highest digit perpendicularly to the axial direction as shown by the arrow. The support shaft 3 is inserted between the side surface part 15 and the holding part 16 from the direction, and the support shaft 3 is inserted into the shaft hole 17. Next, the pinion 5 of the highest digit is inserted through the support shaft 3A, and the pinion cover part 6 is inserted.
A, and in this way pinion 5 and indicator wheel 4
The support shaft 3.3A is inserted into the protective cover 6 from the upper digit side to the lower digit side in order. Further, in this embodiment, the protective cover 6 is supported in a non-rotating state by supporting and fixing a pair of support shafts 3.degree. 3A to the left and right side plates 2 of the frame 1.

Further, the lid portion 19 is fixed to the lowest digit side opening of the pinion cover portion 6A by adhesive or the like. In addition, 20 is the display wheel 4
．． This is a display board disposed on the front side of a protective cover 6 on which a counter mechanism such as a pinion 5 is assembled, and this display board 2
0 has a display window 21 cut out therein for reading display portions such as numbers formed on the outer peripheral surface of each of the display wheels 4.

In this way, in the above embodiment, the display window 2 of the display board 20
1 through the protective cover 6, and the pinion 5 group is entirely covered by the pinion cover portion 6A of the protective cover 6, and extends continuously from the pinion cover portion 6A. Since approximately 1/2 of the circumference of the display wheel 4 group is covered by the display wheel cover part 6B, the display value should not be subtracted intentionally by operating the connecting part between the display wheel 5 and the display wheel 4. can be prevented.

5 and 6 show a second embodiment of the invention, and a first embodiment of the invention.
The same reference numerals will be given to the same parts as in the embodiment, and the description of the same parts will be omitted. In this example, the holding part 16 in the first embodiment is omitted, and the protective cover 22 has the side part 15 and the pinion cover. The part 6A and the curved indicator wheel cover part 6B are integrally molded, and when assembling, the support shaft 3.3A is assembled to the protective cover 22, and the indicator wheel 4 and pinion 5 are sequentially attached from the axial direction as usual. Support shaft 3,
Just install it in 3A. Also in this example, the protective cover 22 can prevent the display value of the display wheel 4 from being subtracted.

FIGS. 7 and 8 show a third embodiment of the present invention, and will be described in detail using the same reference numerals for the same parts as in the above embodiment and omitting the explanation of the same parts. In this example, the protective cover 23 is attached to the side surface. 15 is integrally formed with a cylindrical pinion cover portion 6A, and a cylindrical display wheel cover portion 24 that entirely covers the fourth group of display wheels is integrally formed, whereby the protective cover 23 covers the fifth group of pinions. Since the fourth group of display wheels is completely covered, subtraction operations of display values can be more reliably prevented. In addition, in this embodiment, in order to prevent intentional operation from the outside,
The lid 19A is fitted into the opening on the lowest digit side of the protective cover 23 by means of welding, fitting, adhesion, or the like.

Therefore, the display ring 4. Even if an attempt is made to rotate the binion 5, almost the entire circumference is protected by the protective cover 23 and the lid 19A, so it is possible to prevent the value displayed on the display wheel 4 from being intentionally subtracted.

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.
By protruding the pinion 5 and forming the shaft hole 26 on the other side of the pinion 5, it is possible to mount the pinion 5 on the pinion cover portion 6A and to fit the shaft portion 25 and the shaft hole 26 so that they can freely rotate. This makes it possible to reduce the number of support shafts 3A in the first to third embodiments. Further, in this embodiment, the protective cover 6
A bearing recess 27 is formed in the side surface 15 of the pinion 5 to correspond to the shaft 25 of the pinion 5, and a support shaft 28 to be inserted into the shaft hole 26 of the pinion 5 is integrally protruded from the inner surface of the lid 19. A plurality of pinions 5 are rotatably supported between the side surface portion 15 of the protective cover 6 and the lid portion 19.

This makes it possible to further block out operations from the outside, making it possible to more reliably prevent operations such as subtraction of the displayed value on the display wheel 4. Further, as shown in FIG. 10, by forming a light receiving part 30 on the protective cover 29 and forming a light emitting part 31 at the end of the display ring cover part, the illumination beam of light #i32 is guided by the protective cover 29 and the light emitting part The display value corresponding to the display window 21 may be illuminated by light from the display window 31 .

[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 pinion for carrying is located outside of the display wheels between the display wheels. In an outer pinion type counter in which the display value of the display wheel is visually read through a display window of a display board, a transparent protective cover is provided on the support shaft, and the protective cover includes a pinion cover portion that covers a group of pinions. and a display wheel cover portion that covers at least a portion of the display wheel corresponding to the display window are integrally provided in a continuous state, and it is possible to provide a counter that can prevent the display value from being intentionally subtracted.

[Brief explanation of drawings]

1 to 4 show a first embodiment of the present invention, FIG. 1(A) is a partially cutaway overall plan view, FIG. 1(B) is a partially cutaway front view, and FIG. 2 is a partially cutaway front view. A cross-sectional plan view of the section, Figure 3 is an exploded #l
4 is a vertical side view, FIGS. 5 and 6 are a second embodiment of the present invention, FIG. 5 is a perspective view, FIG. 6 is a sectional view, and FIGS. 7 and 8. shows a third embodiment of the present invention,
FIG. 7 is an exploded perspective view, FIG. 8 is a partial front view, FIGS. 9 and 10 show other embodiments of the present invention, and FIG.
The figure is a sectional view, and FIG. 10 is a partially cutaway plan view. 1... Frame 3... Support shaft 4... Display wheel 5... Pinion 6, 22.23.29... Protective cover 6A... Pinion cover part 68.24... Display wheel cover Part Patent Application Representative of Nippon Seiki Co., Ltd. Patent Attorney Morihin Ushiki 1) Section 4 Part 1 Figure (A) Figure 1 (8) Figure 4 Figure 0 ? Figure 2 Figure 5 Figure 6

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 on the outside of the display wheels, and a pinion for carrying is provided between the display wheels. In an outer pinion type counter that visually reads the displayed value of a wheel through a display window of a display board, a transparent protective cover is provided on the support shaft,
The counter is characterized in that the protective cover is integrally and continuously provided with a pinion cover part that covers the pinion group and a display wheel cover part that covers at least a portion of the display wheel that corresponds to the display window.