JPH02263284A - Twin counter zero return device - 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 a zero return device for twin counters used as odometers for vehicles such as automobiles and motorcycles.

[Conventional technology]

Conventionally, this type of twin counter zero return device is disclosed in Japanese Patent Laid-Open No. 136113/1983, Japanese Unexamined Utility Model No. 61147463, Japanese Unexamined Utility Model No. 62-44361, and Japanese Unexamined Utility Model No. 57-7.
3620, etc. are known.

These conventional structures have two counters arranged in series or parallel on the same axis, and the zero return member of one counter can be operated to return to zero by pushing the one zero return shaft in the axial direction. Further, it is configured to include an operating mechanism that rotates the zero return shaft and allows the zero return member of the other counter to operate to return to zero by pushing the zero return member in the axial direction at that position.

[Problem to be solved by the invention]

However, in the conventional system described above, the zero return operation of the zero return axis consists of the operation of pushing the axis as it is, and the operation of rotating it once and then pushing it at that rotation position. There is a risk of accidentally pressing the place you should press after moving, or accidentally rotating and then pressing the place you should press, and since pressing after turning requires two movements, it is easier to operate. This has disadvantages in that it tends to have a complicated structure as it becomes lower, requires a large installation space, and is subject to restrictions on the arrangement of other instrument components.

[Means to solve the problem]

The purpose of the present invention is to solve these inconveniences.The gist of the present invention is to provide two counters on a frame, and to selectively connect each zero return member of the counter to one zero return axis. The zero return shaft is arranged in the frame so as to be rotatable about the axis and moved in the axial direction, and the zero return shaft is rotated about the axis so that one of the counters can be operated. One actuating body is provided to rotate the zero return member back to zero, and the other actuator is provided to rotate the zero return member of the other counter to zero by the axial movement operation of the actuating body, and the above-mentioned return A twin counter characterized in that a restraining mechanism for restraining the zero axis to either rotation around the axis or movement in the axial direction is provided between one of the actuating bodies and the other actuating body. It's in the zero device.

[Effect]

When the zero return shaft is rotated around the arm, one operating body rotates the zero return member of one counter back to zero, and when the zero return axis is moved in the axial direction, the other operating body returns the other counter to zero. The members are rotated back to zero, and each counter is selectively reset to zero.
At this time, a restraint mechanism provided between one operating body and the other operating body restricts the zero return axis to either rotation around the sleeve or movement in the axial direction, and the simultaneous return to zero of each counter is prevented. Manipulation is prevented.

〔Example〕

1 to 6 show an embodiment in which the present invention is applied to an automobile odometer, 1 is an instrument frame, and two counters 2 and 3 are arranged in parallel in the instrument frame 1. Support shafts 6 and 7 are arranged on the frames 4 and 5 of the counters 2 and 3, and four number wheels 2a and 3a are rotatably arranged on each of the support shafts 6 and 7, and each number is rotated. Ring 2a
Heart cams 2b and 3b are integrally formed on the side surfaces of the counters 3a, and input gears 2c and 3b are provided on the support shafts 6 and 7 of the respective counters 2 and 3, facing the number wheels 2a and 3a of the lowest digit.
3C, and a drive gear 8 is meshed with one input gear 2C, and this drive gear 8 (to which the rotation of the wheels of the automobile is transmitted), and the input gear 3C of the other counter 3 is connected to the drive gear 8. Rotation of the wheels is transmitted from the distribution shaft 9, gears 10 and 11, a transmission shaft, and gears similar to the drive gear 8 (not shown).

Numeral 14 is a zero return member, in which holding shaft stops 16 are rotatably attached to each frame 4 and 5 and are arranged in parallel with the support shafts 6 and 7. Zero return members m and 14 are fixedly attached to the respective zero return members m and 14, and zero return levers 13a and 14a are formed in each of the zero return members 14 to correspond to the heart cams 2b and 3b, respectively, and each number ring 2a・It is located between 3C and rotates the number wheel of the upper digit by 1710 rotations with one rotation of the number wheel of the lower digit. Binion 13 to be transmitted to
c-14c is provided.

Further, an actuating arm 17 is fixed to the protruding end of one of the holding shafts, and a spring hook is fixed to the end of the holding shaft.
A coil spring 19 is hung between the frame 4 and the spring hook, which returns the zero return member 13 to a normal position and rotationally connects each number ring 2a using pinions 13b-130. Four operating arms are also fixed to the protruding end of the shaft 16, and the spring hooks are slanted and coil springs 19.
A similar spring hook is provided with a plate (not shown) and a coil spring (not shown), which is configured to return the zero return member 14 to the normal position, and thus the respective actuating arms 17 (9) When the respective holding shaft stops and ratios are rotated, the coil spring 19 and the coil spring (not shown)
The zero return members 13 and 14 move to return to zero against the
3b, 14b, 13C, 14C and the number wheel 2a-3a are separated from each other, and the respective zero return levers 13a and 1
4a engages the corresponding heart cams 2b and 3bJ, respectively, and by this zero return operation, each number wheel 2a and 3a rotates back to zero, and the displayed number of number wheels 2a and 3a is set to O, and the counters 2 and 3 are returned. It will drop to zero.

Reference numeral 21 denotes an operating mechanism, in which the actuating arms 17 are fixed to the holding shafts b and 16, which are arranged with their axes offset from each other, with a phase difference of approximately 160 degrees, that is, one of the actuating arms 17 is The other actuating arm 17 and the other actuating arm 17 protrude obliquely upward, and a pressure receiving part 17 a - 20 a is formed at the tip of each actuating arm 17 and the actuating arm 1 .
7. A zero return axis n is provided between the upper plate 1a and the lower plate 1b of the instrument frame 1 so as to be operable to rotate around the axis and move in the axial direction, and the tip of this zero return axis n is located in the gap. protrude outward and install a knob (not shown), and attach a retaining ring n to the top of the zero return shaft n.
is fixed, and the other actuating body is inserted into the instrument frame 1 so as to be slidable on the zero return axis n, and is prevented from rotating with respect to the instrument frame 1 by the locking notch groove 24a and the notch surface 1c of the instrument frame 1. D-shaped cut surface 2 that can slide in the axial direction and has a zero return axis n
2a and the D corporation 25a, one of the actuating bodies 5 is inserted in a non-rotating state relative to the shaft, and the lower cylindrical moat of the one of the actuating bodies 5 is inserted into the shaft hole n of the lower plate 1b. , a suppressing portion n facing above the pressure receiving portion 20a applied by the other actuating arm.
is provided protrudingly on the other actuating body 8, a compression spring 4 is interposed between the one actuating body 5 and the other actuating body, and the pressure receiving portion 17 of the one actuating arm 17 is attached to the one actuating body 5. A pressing part (material) facing the side of a is provided protrudingly, and one actuating body 5 and the lower plate 1
b and the inner surface 1d of the instrument frame 1.
It is constructed by suspending a coil spring 31 that is brought into contact with.

The wings are a restraining mechanism, and in this case, the abutment in is integrally formed on one of the actuating bodies 9, and a coil spring 8 is attached to the other actuating body 9.
1, one operating body 5 is attached to the inner surface 1d of the instrument frame 1.
In the normal state shown in FIG. 4 in which the other actuating body 2 is in contact with the other actuating body 2, an escape groove U is formed to allow the other actuating body 2 to push. A movement preventing portion is integrally formed to abut against the upper surface of the contact portion Ω to prevent the other actuating body 24 from being pushed during operation, and is further provided with a movement preventing portion that prevents the other actuating body 24 from being pushed as shown in FIG. It is constructed by forming a rotation blocking portion that comes into contact with the side surface of the contact portion and prevents rotation of one of the actuating bodies 5.

Since this embodiment has the above configuration, when the zero return axis n is rotated clockwise around the axis as shown in FIG. 5 in the state shown in FIGS. Since it is prevented from rotating, the pressure receiving part 17a of the actuating arm 17 of one counter 2 is pushed between the suppressing parts of one of the actuating bodies 5,
The holding shaft rotates, and the zero return member B rotates to return to zero, and one of the counters and counters 2 is returned to zero, and this zero return axis n
When released, the zero return shaft n and one of the operating bodies 5 are rotated counterclockwise by the coil spring 31 to reach the states shown in FIGS. 3 and 4, and the holding shaft is also rotated to return by the coil spring 19, and the The member 13 returns to its normal position, and when the zero return shaft n is pushed in the axial direction as shown in FIG.
The other operating body is pushed against the compression spring 4,
The pressing part Z of the other actuating body pushes the pressure receiving part a of the actuating arm of the other counter 3, its holding shaft 16 rotates, the zero return member 14 rotates to return to zero, and the other The counter 3 is returned to zero, and when the zero return shaft n is released, the other operating body and the zero return shaft n are raised and returned by the compression spring 4 until the retaining ring n comes into contact with the upper plate 1a, and is held. The shaft 16 is rotated back to zero by a coil spring (not shown) similar to the coil spring 19, and the zero return member 14 is returned to its normal position.
Therefore, the two counters 2 and 3 can be selectively reset to zero by rotating one zero return axis n around the axis or moving it in the axial direction, which improves operability and prevents erroneous operation. can.

At this time, the zero return axis n is restrained by the restraining mechanism 81 to either rotation around the axis or movement in the axial direction. Then, as shown in Fig. 5, the movement blocking part of the other actuating body U comes into contact with the upper surface of the contact part (the upper surface), making it impossible to push it, and as shown in Fig. 6, the return shaft 4 is pushed once and then rotated. When it moves, the side part of the abutting part comes into contact with the rotation blocking part wing and becomes unable to rotate.
This makes it possible to prevent the respective counters 2 and 3 from returning to zero at the same time, and because the restraining mechanism is provided between one of the operating bodies 5 and the other operating body U, the structure thereof can be simplified.

Note that the present invention is not limited to the operating mechanism 21 and the restraint mechanism 32 shown in the above embodiments.

〔Effect of the invention〕

As described above, in the present invention, when the zero return shaft is rotated about the axis, one of the actuating bodies moves the zero return member of one counter to return to zero, and when the zero return axis is moved in the axial direction, the other actuating body moves the zero return member of one counter to zero. The zero return members of the counters are rotated to return to zero, and each counter is selectively returned to zero to prevent erroneous operation. The mechanism restricts the zero-return axis to either rotation around the axis or movement in the axial direction, which prevents simultaneous zero-return operations of each counter, and the restraint mechanism also prevents the counters from returning to zero at the same time. The structure can be simplified since it is provided between the

As described above, the intended purpose can be fully achieved.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a plan view of the first embodiment, FIG. 2 is a partial side sectional view thereof, FIG. 3 is a partial side view thereof, and FIG. 4 is a partial side view thereof. FIG. 5 is a partial plan view in its operating state, and FIG. 6 is a partial side view in its operating state. 2.3... Counter, 4.5... Frame, 13.
14... Zero return member, n... Zero return axis, m, 25...
Actuating body...restraint mechanism. March 31, 1999

Claims (1)

[Claims] Two counters are disposed on a frame, and each zero return member of the counter can be selectively returned to zero using one zero return axis, The actuating body is arranged so as to be rotatable and axially movable, and one actuating body is disposed on the zero return shaft to rotate the zero return member of one counter back to zero by the rotation operation around the axis, and The other actuating body is arranged to rotate the zero return member of the other counter back to zero by a directional movement operation, and the constraint further restricts the zero return axis to either rotation around the axis or movement in the axial direction. A twin counter zero return device characterized in that a mechanism is provided between the one operating body and the other operating body.