JPH096939A - Integrating meter with reset-to-zero device - Google Patents

Abstract

PURPOSE: To provide an integrating meter with the reset-to-zero device which does not cause such trouble that a number wheel is locked even if a reset-to-zero knob is slightly pushed while the number wheel is in carry operation. CONSTITUTION: Plural number wheels 1 each having a gear part at one side part and two teeth at another side part is pivoted rotatably and coaxially, and a heart-shaped cam 1d is provided almost in the center of the side part of the number wheel 1. A reset-to-zero shaft 4 is pivoted adjacently to the number wheels 1 in parallel to the shaft on which the number wheels are pivoted, and at part of the reset-to-zero shaft, a pinion 6 having axially long teeth 6 and axially short teeth 6b arranged by turns is pivoted engaging both the two teeth 1b and 1c and gear part of an adjacent number wheel 1. At part of the reset-to-zero shaft 4, a reset-to-zero lever 5 for reset-to-zero operation is provided and the heart-shaped cam 1d is pushed with a reset-to-zero lever 5 by rotating the reset-to-zero shaft 4 to reset the respective number wheels 1 to zero. A recessed part 1e that the long teeth 6a of the pinion 6 can enter is formed adjacently behind the rear teeth 1c on the anti-rotation side of the two teeth of the number wheel 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a mileage integrating meter of an automobile, etc., and is adapted to rotate a zeroing shaft equipped with a zeroing lever to return the display of a numeral wheel to zero. Regarding the total.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 10, a counter with a zero-reset device is provided with a gear portion 22 and a heart-shaped cam 23 on a plurality of numeral wheels 21 arranged in parallel on a frame and pivotally supported. ,
A zero-reset shaft 24 is rotatably arranged in a certain angle range in the lateral axial direction of the numeral wheel 21, and a zero-reset lever 25 engageable with the heart-shaped cam 23 is provided on the zero-reset shaft 24. A pinion 26 that can mesh with the gear portion 22 of the numeral wheel 21 is supported by a shaft 27.

[0003]

In the zeroing device having such a structure, the zeroing shaft 24 normally pulls up the zeroing lever 25 and the pinion 26 of the numeral wheel 21 as shown in FIG. 10 (A). When the gear portion (two teeth) 22 is brought into an engageable state and a zero-reset knob (not shown) is pushed, the zero-reset shaft 24 is rotated clockwise as shown in FIG. The pinion 26 is separated from the gear portion 22, and the zero-return lever 25 pushes the heart-shaped cam 23 of the numeral wheel 21 at its tip end, whereby the numeral wheel 21 is returned to the zero position.

However, in order to prevent unnecessary rotation of the number wheel 21, the pinion 26 has long teeth 2 which are long in the axial direction.
6a and short short teeth 26b are alternately arranged, a rectangular shaft portion 26c is provided on the shaft portion, and a leaf spring 28 is elastically abutted on the rectangular shaft portion 26c.

Therefore, for example, as shown in FIG. 11 (A), when the carry-out operation is started during the operation of the integrating meter and the long teeth 26a of the pinion 26 mesh with the gear portion 22, the zero-return knob. 11B is temporarily pushed a little for some reason, as shown in FIG. 11B, the zeroing shaft 24 temporarily turns slightly clockwise and the pinion 26 moves to the gear portion 22.
Away from it, the pinion 26 rotates about 45 ° either way,
Once again, as shown in FIG. 11 (C), the pinion 26 engages with the gear portion 2 again.
2, but at this time the long teeth 26a of the pinion 26
Instead, the short teeth 26b mesh with the gear portion 22.

Under normal conditions, the long teeth 26 of the pinion 26
When a is engaged with the gear portion 22, the number wheel 2 is normally operated.
1 rotates to perform the carry operation, but when the short teeth 26b of the pinion 26 mesh with the gear portion 22 as shown in FIG. 11C, the numeral wheel 21 is locked and the normal carry operation can be performed. There was a problem that disappeared.

The present invention has been made in view of the above points, and does not cause a problem that the number wheel is locked even when the zero-return knob is slightly pushed during the carry operation of the number wheel. It is an object to provide an integrating meter with a zero device.

[0008]

In order to achieve the above object, a totalizer with a zeroing device according to the present invention has a gear portion on one side and two teeth on the other side, and the same axis is provided. A plurality of number wheels that are rotatably supported, a heart-shaped cam that is provided substantially at the center of the side portion of the number wheel, and parallel to and adjacent to the axis on which the plurality of number wheels are pivotally supported. 2 shafts that are adjacent to each other and have a long tooth in the axial direction and a short tooth in the axial direction alternately arranged while being supported by a part of the zeroing shaft. A pinion that meshes with teeth and a gear portion and a zeroing lever for zeroing operation provided on a part of the zeroing shaft are provided. In the totalizer with a zeroing device that pushes the cam to zero each number wheel, in the two teeth of the number wheel, , The length of teeth of the pinion, characterized in that the recess which can enter is formed.

Here, after the short tooth of the pinion meshes between the two teeth, the long tooth next to the short tooth enters the recess formed in the rear of the tooth on the counter rotation side of the two teeth. To do.

[0010]

[Operation / Effect] In the integrating meter with the zero-reducing device having such a configuration, when the integrating operation of the integrating meter is started and the carry operation is started, and the long teeth of the pinion are meshed between the two teeth, the zeroing operation is performed. When the knob is pressed incompletely, the zero-reset shaft 4 rotates slightly and the pinion separates from the two teeth, and the pinion rotates about 45 ° either way, and the pinion immediately becomes two teeth again. When engaged, the short teeth rather than the long teeth of the pinion may mesh in an abnormal condition between the two teeth.

When the short teeth of the pinion mesh between the two teeth,
In the conventional number wheel, the number wheel is locked by the pinion, and the carry operation cannot be performed. Therefore, when the number wheel rotates due to the carry operation, the long tooth next to the short tooth that meshes with the two teeth of the pinion can enter the recess. Therefore, the numeral wheel is not locked by the long teeth of the pinion at the time of carrying, and can carry out the carrying operation normally.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a front view of a speedometer-equipped integrating meter for an automobile, FIG. 2 shows a left side view thereof, and FIG. 3 shows a bottom view thereof. The integrating meter with a zeroing device is arranged in the lower stage in FIG. 1, and four numeral wheels 1 are rotatably supported by a shaft 9 on a frame 10. A gear 8 having teeth on both sides is pivotally supported at the right end of the four numeral wheels 1, and a cover disc 7 is pivotally supported at the left end thereof.

The four numeral wheels 1, the cover disk 7, and the gear 8 are supported side by side on a shaft 9, but each numeral wheel and the like can be slightly moved in the axial direction, so that the space between the cover plate 7 and the frame is small. A coil spring is externally fitted to the shaft 9 of FIG. 3 and each spring, etc. is biased to the right by this spring to prevent rattling. Reference numeral 19 denotes a drive unit such as a motor. The output shaft of the drive unit 19 meshes with the gear 8 via a small gear, and the gear 8 is rotationally driven according to the traveling distance.

As shown in FIGS. 4 to 6, a gear portion 1a having continuous teeth is provided on the right side of each numeral wheel 1 and two teeth consisting of two teeth are provided on the left side thereof. A heart-shaped cam 1d for zeroing is provided substantially at the center of the left side surface thereof. Normally, the numeral wheel 1 is rotationally driven counterclockwise in FIG. 5 and carried up, but the two teeth consist of the front tooth 1b on the rotation side and the rear tooth 1c on the counter rotation side, and the rear tooth 1c A recess 1e into which a long tooth of a pinion described below can enter is formed adjacently. After the short teeth of the pinion are meshed between the two teeth in the recess 1e,
The long tooth next to the short tooth enters.

The zero-reset shaft 4 is rotatably supported on the frame 10 in the axial direction of the side of the numeral wheel 1 within a certain angle range. The zeroing shaft 4 is provided with a zeroing lever 5 that can be engaged with the heart-shaped cam 1d so as to be inserted between the respective number wheels.

Further, on the shaft 16 supported away from the central axis of the zeroing shaft 4, the gear portion 1 of each numeral wheel 1 is mounted.
a and three pinions 6 capable of meshing with two teeth are rotatably supported, and a small pinion 17 capable of meshing with the gear portion 1a of the rightmost numeral wheel 1 and the gear 8 is rotatably supported. To be done. In other words, the rotation of the gear 8 is transmitted to the number wheel 1 on the left side thereof via the small pinion 17, and at the time of the carry associated with the rotation of the number wheel 1, each of the wheels positioned between the adjacent number wheel 1 is positioned. The number wheel on the left side is configured to carry and rotate via the pinion 6.

In order to prevent unnecessary rotation of the numeral wheel 1, each pinion 6 has a long tooth 6a that is long in the axial direction and a short tooth 6b that is short in the axial direction.
Are arranged alternately. Further, the pinion 6 is provided with a rectangular shaft portion, and the leaf spring portion 18 extending from the shaft 4 is elastically abutted on one surface of the rectangular shaft portion, and the pinion 6 moves 90 times when the numeral wheel 1 is carried. Rotate by °. Each of the pinions 6 having such a configuration is arranged so as to mesh with the two teeth of the adjacent right-hand numeral wheel 1 and the gear portion 1a of the left-hand numeral wheel 1.

As shown in FIGS. 1 and 2, one end of the zero-reset shaft 4 projects laterally of the frame 10, a crank portion 4a is provided there, and a cylindrical engagement convex portion 4b is provided at the tip of the crank portion 4a. Are provided so as to project laterally.

A guide portion 13 for supporting a zeroing knob 15 for zeroing operation is provided on an extended portion of the frame 10 near the engaging convex portion 4b, and a plate portion 14 below the guide portion 13 is provided. A guide hole 14a is formed in the.

The zeroing knob 15 is provided at the bottom of the rod-shaped knob portion.
The engaging portion 15b is provided so as to project laterally. The engaging portion 15b is provided with a recess for inserting and engaging the engaging convex portion 4b. Further, an elastic projection 15c is provided on the lower portion of the zero-return knob 15 so as to project laterally, and when the knob is pushed down, the elastic projection 15c abuts on the peripheral edge of the guide hole 14a of the frame plate portion to give a feeling of moderation. Board 14
The coil spring 12 is inserted between the base of the engaging portion 15b and the engaging portion 15b.

Therefore, when the zero-return knob 15 is pushed in,
As shown in FIG. 2, the engaging portion 15b compresses the coil spring 12 and moves to the left, and at this time, the engaging convex portion 4b engaging with the concave portion of the engaging portion 15b and the crank portion 4a are linked. The zeroing shaft 4 rotated in the counterclockwise direction in FIG. 2 pushes the zeroing lever 5 between the respective number wheels, and the pinion 6 and the small pinion 17 pivotally supported by the shaft 16 are connected to the number wheels 1 and 1. It operates so as to be separated from the gear 8.

Next, the operation of the integrating meter with the zero-reset device having the above configuration will be described. When the zero-return shaft 4 is pushed in order to zero the integrating counter, the engaging portion 15b also moves in the direction of the arrow in FIG. 2, and the engaging convex portion 4b and the crank portion 4a engaging with the engaging portion 15b. The zero-reset shaft 4 rotates through a predetermined angle in the counterclockwise direction in FIG.

By the rotation of the zero-reset shaft 4, each pinion 6 causes the gear portion 1a of the numeral wheel 1 and the front tooth 1b having two teeth,
The small pinion 17 separates from the rear tooth 1c and the gear 8 and the gear portion 1a of the numeral wheel 1, and the zeroing lever 5 acts to push the heart-shaped cam 1d of the numeral wheel 1 at its tip. As a result, the four number wheels 1 are returned to the zero position.

On the other hand, when the zero-return knob 15 is not pushed enough to prevent the numeral wheel 1 from completely returning to zero as shown in FIG. 7B, or when the integrating operation of the integrating meter is started, the carry operation is started. As shown in FIG. 8, when the long tooth 6a of the pinion 6 meshes between the two teeth and the zeroing knob 15 is temporarily pushed a little for some reason, the zeroing shaft 4 is slightly moved. When the pinion 6 rotates away from the two teeth, the pinion 6 rotates about 45 ° in either direction, and the pinion 6 immediately engages the two teeth again, not the long teeth 6a of the pinion 6,
The short tooth 6b meshes between the two teeth in an abnormal state (see FIG. 9).
A).

However, the two rear teeth 1 of the numeral wheel 1
Since the concave portion 1e is formed adjacent to the rear of c, when the numeral wheel 1 is rotated by the carry operation, the long tooth 6a next to the short tooth 6b of the pinion 6 enters the portion 1e as shown in FIG. 9B. To do. Therefore, the numeral wheel 1 is not locked by the pinion 6 and can normally carry.

In the above embodiment, the case where each number wheel 1 rotates forward in the direction of the arrow in FIG. 7 etc. when the vehicle travels forward has been described. In order to prevent such locking of the number wheel during reverse rotation, a recess into which the long tooth 6a of the pinion can enter is formed in the part adjacent to the two teeth on the counter rotation side during reverse rotation, that is, in front of the front tooth 1b. It should be provided.

[Brief description of drawings]

FIG. 1 is a front view of an integrating meter with a zeroing device according to an embodiment of the present invention.

FIG. 2 is a left side view of the integrator.

FIG. 3 is a bottom view of the integrator.

FIG. 4 is an enlarged front view of a numeral wheel 1.

FIG. 5 is a left side view of the numeral wheel 1.

FIG. 6 is a perspective view of the numeral wheel 1.

FIG. 7 is a cross-sectional explanatory view of the numeral wheel and the pinion in a state where the zero-return knob is slightly pushed during the carry operation.

FIG. 8 is a cross-sectional explanatory diagram of a numeral wheel and a pinion when incomplete zeroing is performed.

FIG. 9 is a cross-sectional explanatory view showing a normal carry after the illegal meshing of the numeral wheel and the pinion.

FIG. 10 is a cross-sectional explanatory view showing a zeroing operation of the conventional integrating meter.

FIG. 11 is a cross-sectional explanatory view showing a zeroing operation of the conventional integrating meter.

[Explanation of symbols]

 1-Numeral wheel, 1a-gear part, 1b-2 front teeth of 2 teeth, 1c-2 rear teeth of teeth, 1d-heart-shaped cam, 1e-recessed part, 4-resetting shaft, 5-resetting lever, 6 -Pinion, 6a-long tooth, 6b-short tooth, 15-zeroing knob.

Claims (2)

[Claims] 1. A plurality of numeral wheels each having a gear portion on one side and two teeth on the other side and rotatably supported on the same shaft, and a substantially center of a side portion of the numeral wheels. A heart-shaped cam, a zero-reset shaft rotatably supported in parallel with and adjacent to the plurality of number wheels, and a part of the zero-revolution shaft. At the same time, the long tooth in the axial direction and the short tooth in the axial direction are alternately arranged, and the two pinion of the adjacent numeral wheel and the pinion meshing with the gear portion, and a part of the zeroing shaft. A zeroing lever provided for zeroing operation, wherein the zeroing shaft is rotated, and the heart-shaped cam is pushed by the zeroing lever to zero each number wheel. A recess, into which the long tooth of the pinion can enter, is formed at the rear of the counter-rotation-side tooth of the two teeth of the numeral wheel. An integrating meter with a zero-reset device, which is characterized in that 2. The recess formed in the rear of the tooth on the counter-rotation side of the two-toothed teeth has a length next to that of the short tooth after the short tooth of the pinion meshes between the two toothed teeth. The integrating meter with a zeroing device according to claim 1, wherein a tooth enters.