JPH032992A - 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 relates to a total counter used in a travel distance meter of an automobile, a counter of a tape recorder, etc., and particularly relates to a motor-driven total counter.

[Prior art] This type of conventional counter has two parts between the left and right side plates of the frame.
Wooden support shafts are laid horizontally in parallel, a plurality of display wheels are rotatably supported on one support shaft, and a pinion for shifting is provided between each display wheel on the other support shaft. Install and fix the step motor to the outer surface of the lower digit side of the frame.

The rotation of the step motor drive unit is transmitted to a rotation transmission pinion via a plurality of reduction gears pivotally supported on the frame, and the rotation of this pinion is transmitted to the display wheel of the lowest digit. The step motor is driven based on the vehicle speed signal etc. from the section, and the rotation of this step motor is sequentially transmitted to the drive gear, reduction gear, rotation transmission pinion, and display wheel of the lowest digit. Each display wheel is rotated sequentially from the lower digit to the upper digit through the display.

[Problems to be Solved by the Invention] In the above-mentioned prior art, the step motor is provided in a state protruding from the frame and located outside of the plurality of display wheels and pinions respectively provided on the two wooden support shafts. Ori,
Furthermore, since the multiple gears that transmit the rotation of this step motor are arranged outside the display wheel, the installation of the step motor and its rotation transmission structure requires a large space, which prevents miniaturization of the counter. Ta.

Therefore, an object of the present invention is to provide a total counter that can be downsized by improving the motor mounting mechanism.

[Means for Solving the Problems] The present invention includes a cylindrical holder installed horizontally on a frame, a plurality of display wheels rotatably provided on the outer periphery of the cylindrical holder, and a support shaft located on one side and installed horizontally on the frame, a pinion for digit feeding provided on the support shaft and located between each display wheel, and a motor housed in the cylindrical holder; It is configured to include a rotation transmission mechanism that transmits the rotation of the motor to the display wheel of the lowest digit.

[Operation °] The present invention is driven by a motor located in the display wheel and housed in a cylindrical holder via a rotation transmission mechanism, and each display wheel is sequentially fed at the outer circumferential position of the cylindrical holder via a pinion. Rotated.

[Example] Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show a first embodiment of the present invention, in which l is a frame, this frame l is bent into a U-shape, and a cylindrical part is formed between its left and right side plates. A holder 3 is installed horizontally. Both ends of this holder 3 are in an open state, and the left opening edge 4 fits into a groove 5 formed in the left side plate 2, and the right opening edge 6 is formed with a step 7 to have a large diameter. , is fitted into the circular IIIt8 of the right side plate 2. 9
are a plurality of display wheels fitted and supported on the outer peripheral surface of the holder 3 so as to be freely rotatable, and each display ring 9 displays a number from °O to 9'', and the lowest digit display ring 9 is positioned by coming into contact with the stepped portion 7 via the washer ring 7A, and the display ring 9 of the highest digit is connected to the receiving plate 1 fitted in the holder 3.
The lower digits are biased by the spring 11 via the lower digit. Continuous teeth 12 are formed on the periphery of the display wheel 9 on the lower digit side, and intermittent teeth 13 are formed on the upper digit side. Reference numeral 14 denotes a support shaft located on the outer side of the holder 3 and horizontally installed between the left and right side plates 2 of the frame 1 parallel to the axial direction of the holder 3. A pinion 15 for shifting is supported so as to be freely rotatable. This pinion 1
5 has long teeth IB and short teeth 17 formed alternately, the long teeth 16 meshing with the continuous teeth 12 and intermittent teeth 13 of the display ring 9, and the short teeth 17 meshing with the continuous teeth 12 of the display ring 9. 18 is the support shaft 14
This is a rotation transmission pinion provided on the side of the lowest digit.This pinion 18 is formed with continuous teeth 19, and is connected to the continuous teeth 12 of the display wheel 9 of the lowest digit and the rotation transmission gear of the motor, which will be described later. They mesh together. 20 is a step motor;
This stay motor 20 is housed and fixed in the cylindrical holder 3 at a coaxial position therewith. Further, the step motor 20 is mounted on the inner peripheral surface of the left opening side of the holder 3.
It is positioned and fixed to a circumferential collar 21 that protrudes from the body. Further, the step motor 2o is provided with a rotating shaft 22 on the central axis t, and the right end of the rotating shaft 22 is pivotally connected to the right side plate 2 via a bearing 23.
2 is a rotor 2 provided on the inner peripheral side of the step motor 2o.
4, and a stator 25 is attached to the outer periphery of this rotor 24.
is fixed, and a lead wire 26 connected to a stator coil (not shown) of this stator 25 is connected to the left side plate 2 of the frame l.
It is inserted from the hole 27 of. A drive gear 28 is located at the right end of the holder 3 and is fixed to the rotating shaft 22, and is meshed with the pinion 18 through a hole 29 formed in the holder 3. The rotation transmission mechanism 30 is constituted by the rotation transmission mechanism 30.

When the step motor 20 is driven based on a vehicle speed signal etc. from the control section, the rotor 24 rotates together with the rotating shaft 22, and the rotation of the rotating shaft 22 is transferred from the drive gear 28 via the pinion 18 for rotation transmission. Display wheel 9 for the lowest digit
The rotation of the display wheel 9 is transmitted to the shift pinion 15.
The data is transmitted to the upper digits sequentially through the digits.

In the above embodiment, the step motor 20 is housed in the cylindrical holder 3 that rotatably supports the plurality of display wheels 9, so that the step motor 20 is mounted on the frame l as in the conventional case. The step motor 20 is arranged inside the display wheel 9 without being provided protruding outward, thereby improving the miniaturization of the total counter.

Further, a drive gear 28 that constitutes a part of the one-rotation transmission mechanism 30
is arranged inside the holder 3, so the holder 3
Further miniaturization is achieved by locating it inside.

FIG. 3 shows a second embodiment of the present invention, in which a step motor 20 is housed and fixed on the left side of a cylindrical holder 3, and a gear reduction mechanism 31 constituting a part of a rotation transmission mechanism 30A is arranged. A drive gear 28 is fixed to the output shaft 22A of the gear reduction mechanism 31 to transmit rotational force to the rotation transmission pinion 18. Also in this embodiment, since the step motor 20, gear reduction mechanism 31, and drive gear 28 are housed in the holder 3, the total counter can be made smaller.

FIG. 4 shows a third embodiment of the present invention, and in this example, a step motor 20A housed and fixed in a cylindrical holder 3 is aligned along this axis. 1 is provided so as to be offset with respect to the axis L2 of the holder 3, and the step motor 20A is fixed in an offset state by a rib 32 protruding from the inner surface of the holder 3. Also in this embodiment, the step motor 20A and the drive gear 28 are housed in the holder 3, making it possible to downsize the total counter. Further, the rotation of the rotation transmission mechanism of the total counter may be transmitted to the reset counter using a connecting gear.

It should be noted that the invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the invention. For example, the type of motor and the gear structure of the rotation transmission mechanism may be selected as appropriate. The fixing mechanism of the holder may be selected as appropriate.

[Effects of the Invention] The present invention accommodates a motor in a cylindrical holder that rotatably supports a plurality of display wheels, and transmits the rotation of this motor to the display wheel of the lowest digit by a rotation transmission mechanism. Therefore, it is possible to provide a total counter that can be made smaller by improving the motor mounting mechanism.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 show a first embodiment of the present invention.
FIG. 2 is an overall sectional view, FIG. 3 is a schematic explanatory diagram showing the second embodiment of the present invention, and FIG. 4 is a third embodiment of the present invention.
FIG. 2 is a schematic explanatory diagram showing an example. l ・ 3 ・ 9 ・ l 5 ・ 20. 30°・Frame holder・Display wheel・Pinion 20A-Medium step motor 30A・Rotation transmission mechanism patent Patent application Attorney: Morihin Ushiki, Hiki Seiki Co., Ltd. 1) Long Part 4 1 Figure 2 Figure 4

Claims (1)

[Claims] (1) A cylindrical holder installed horizontally on the frame, and a plurality of display wheels rotatably provided on the outer periphery of the cylindrical holder,
A support shaft located outside the cylindrical holder and installed horizontally on the frame, a pinion for shifting provided on the support shaft located at each display interval, and housed in the cylindrical holder. 1. A total counter comprising: a rotary motor; and a rotation transmission mechanism that transmits the rotation of the motor to a display wheel of the lowest digit.