JPH0449728Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a drum-type counter device, and particularly to a counter device using a rotating drum used in automobile mileage counters and the like.

[Prior art]

A conventional example of this type of counter device is shown in FIG.

In the figure, a frame 4 having an R-shaped cross section is fixed to the chassis 1 by screws 2 and 3.
A drive shaft 5 and a drum shaft 6 are installed in parallel on the frame 4, a drive gear 7 is supported on the drive shaft 5, and six character wheels 8 and one transmission gear 9 are rotatably supported on the drum shaft 6. has been done. The rotation of the drive gear 7 is transmitted to the lowest character wheel 8 via a reduction gear 10 and a transmission gear 9, and is sequentially shifted by a pinion (not shown) provided between adjacent character wheels 8 to the uppermost character wheel. It is transmitted to the character wheel 8. On the circumference of the character wheel 8 are 10 from 0 to 9 in the case of a normal odometer.
A six-digit mileage is displayed from a display window 11a formed in the case 11 on the front of the character wheel 8.

[Problem that the invention attempts to solve]

In the conventional device described above, the length of the display window 11a of the case 11 is approximately the same as or somewhat larger than the width of the display section from the lowest character wheel to the highest character wheel. If the width of the display window 11a is small, the display of the lowest or highest character wheel 8 will be difficult to see when looking into the display window 11a from an oblique direction.If the width of the display window 11a is increased, the display will be difficult to see. You can definitely see the drum shaft 6 and frame 4, especially from the side of the topmost character wheel 8.
This means that the internal mechanisms such as the side walls of the camera will be visible.

This invention was developed in view of the above points, and allows the character display to be clearly confirmed, and even when viewed from an angle, the internal mechanism can be seen through the gap between the display window and the topmost character wheel. The purpose is to provide a drum-type counter device that is invisible.

[Means for solving problems]

In order to achieve the above object, the drum-type counter device developed according to the present invention has a plurality of character wheels rotatably arranged side by side on the same axis and accommodated in a case, and digits are sequentially fed starting from the lower character wheel. , in a drum-type counter device in which characters are displayed through a display window formed on the front of the case, above the uppermost character wheel, the character wheel has the same shape as the character wheel and has no character display around it. It is characterized in that a character wheel is provided and the character wheel is used as a rotating wheel for masking.

[Effect]

In the above configuration, since the rotary wheel for masking is arranged above the uppermost character wheel, even if the width of the display window is increased so that the display can be seen reliably, the masking The rotating wheel fills the gap between the display window and the top character wheel, preventing the internal mechanism from being seen through the gap.

In addition, the rotating wheel for masking uses a character wheel that has the same shape as the character wheel for displaying characters but does not have any character display around it, so it can be used as a rotating wheel for masking to display the characters on the periphery. You can use the character wheels as they are before they are displayed.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a top view of an embodiment of the present invention. In the figure, a chassis 1, a frame 4, a drive gear 7,
The structure of the character wheel 8, transmission gear 9, etc. is the same as the conventional structure shown in FIG. 2, so the same reference numerals will be given and detailed explanation will be omitted.

The feature of the embodiment of the present invention is that rotary wheels 12 and 13 for masking are rotatably arranged in parallel above the lowest character wheel 8 and the highest character wheel 8. Among these rotary wheels 12 and 13, the upper rotary wheel 12 has the same shape as the character wheel 8, has no character display on its circumferential surface, and is simply loosely fitted onto the drum shaft 6, and the uppermost character wheel 8 It is not linked to. The lower rotary wheel 13 also has the same shape as the character wheel 8 and does not have any character markings on its circumferential surface, but it has a gear on its inside or side, and also plays the same role as the transmission gear 9 in the conventional structure. There is.

The display window 11a formed in the case 11 is provided so that its length is somewhat larger than the width of the character wheels 8 from the lowest to the highest.

Therefore, even if the display unit is viewed from a somewhat oblique direction, the 6-digit character display will not be hidden by the edge of the display window 11a. Further, the gap between the edge of the display window 11a and the character wheel 8 is closed by the masking rotary wheels 12 and 13, so that the frame 4, drum shaft, etc. are not visible.

In the above embodiment, rotating wheels for masking are provided on the sides of the lowest and highest character wheels.
The rotating wheels may be arranged only on either side of the lowest or highest position. Further, although it is not possible to display numbers or the like as a count display on the circumferential surface of the rotating wheel, other characters, patterns, colors, etc. can be printed as appropriate.

[Effect of idea]

As explained above, according to the present invention, since the rotary wheel for masking is arranged above the uppermost character wheel, the width of the display window is increased so that the display can be seen reliably. However, the masking rotary wheel fills the gap between the display window and the top character wheel, preventing the internal mechanism from being seen through the gap.

In particular, the rotating wheel for masking uses a character wheel that has the same shape as the character wheel for character display, but does not have character display on its periphery.
It becomes possible to share parts, there is no need to separately prepare a mold for molding the rotary wheel for masking, and the product cost can be reduced accordingly.

[Brief explanation of the drawing]

FIG. 1 is a top view of an embodiment of the present invention, and FIG. 2 is a top view of a conventional device. 8...Character wheel, 11...Case, 11a...Display window, 12...Rotating wheel.

Claims (1)

[Scope of utility model registration request] A drum type in which multiple character wheels are rotatably arranged side by side on the same axis and housed in a case, the characters are sequentially advanced from the lower character wheel, and the characters are displayed through a display window formed on the front of the case. In a counter device, a character wheel having the same shape as the character wheel but without any character display around it is arranged above the highest character wheel, and the character wheel is used as a rotating wheel for masking. A drum type counter device characterized by: