JPS58158782A - Zero resetting device of integration meter - Google Patents

Abstract

PURPOSE:To prevent a malfunction of an operating knob, by turning a zero resetting turning body by moving a pulley on a knob shaft in the axial direction, turning a zero resetting member by intelocking with said turning, and resetting each figure wheel to zero and putting in order. CONSTITUTION:In case of resetting an integration meter to zero, when a knob shaft 12 is pushed to the small diameter direction from the large diameter side of a conically inclined surface 11a of a pulley 11, a press-contact part of an end part 13a in the diametral direction of an idle gear 13a and the inclined surface 11a moves to the large diameter side from the small diameter side of the inclined surface 11a to rotate the gear 13, and the rotation is transferred to a gear part 16a through a gear part 13a to rotate a drive gear 16. When a shaft 8 fixed to the gear 16 is rotated, an intermediate gear 4 held by a support plate 6 fixed to the shaft 8 is released from the figure wheel, and cam levers 6a-6d provided on the plate 6 are made to press-contact with a heart cam provided on the side of each figure wheel 2a-2d to reset to zero and put in order these figure wheels 2a-2d.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a zeroing device for a totalizer needle incorporated in a speed needle or the like used in automobiles, construction machines, etc.

The conventional knob that operates the zero return device of the totalizing hand is generally constructed so that it returns to zero by pushing it from a direction perpendicular to the shaft that holds the totalizing dial. Since the control knob is located outside the vehicle, there is a drawback that it is easy to operate the control knob incorrectly.

In order to eliminate this drawback, in order to set the position of the operation knob in a place where it is difficult to operate it incorrectly, there has been a demand for a structure that allows the shaft that holds the totalizing dial to be pushed from the same axis to return to zero. The invention aims to satisfy that need.

The present invention will be described below with reference to embodiments shown in the drawings.

In FIGS. 1 and 2, ■ is a frame. Each number wheel 2a to 2d of the totalizing hand is rotatably held on a number axle 3. Both ends of the numeral axle 3 are fixed to the frame 1, and the intermediate gear 4 is rotatably held on the intermediate gear shaft 5, and the intermediate gear 4 is sequentially relayed from the numeral wheel 2a of the lower digit to the numeral wheel 2d of the higher digit. transmits rotational drive to. The intermediate gear shaft 5 is fixed to the tip of an arm portion 7 formed on the support plate 6.

The support plate 6 is fixedly held on a support plate shaft 8, and the shaft 8 is rotatably supported by the frame 1. A fitting holding plate 9 is fixed to one end of the shaft 8, and a spring lO is tensioned between the frame body 1 and the holding plate 9, whereby the intermediate gear 4 and the number wheels 2a to 2d are brought into pressure contact and rotationally driven. ensure that the information is communicated. A pulley 11 having a conical slope 11a is fixed to or integrally formed with a knob shaft 12, and both ends of the knob shaft 12 are supported by the frame 1 so as to be movable in the axial direction.

A rod-shaped convex portion flb extending in the radial direction from the pulley 1, which is provided integrally with the pulley 11, is fitted with a gap in the long groove 1a of the frame 1, which is provided coaxially with the knob shaft 12.

A fan-shaped idle gear 13 is rotatably held by a gear shaft 14, and both ends of this gear shaft 14 are fixedly held by a frame structure. One end 15a of the coil spring 15
is hooked on the frame 1, and the other end 15b is hooked on the hole provided in the idle gear 13, and the one end 13a of the idle gear 13 in the radial direction and the conical slope 11a of the pulley 11 are connected.
The winding direction of the coil spring 15 is set so that the coil spring 15 is always in pressure contact with the coil spring 15. A fan-shaped drive gear 16 is fixed to the shaft 8, and has a gear portion 16a (3) that meshes with a gear portion 13b provided on the outer periphery of the idle gear 13. When the shaft 8 is rotated, the intermediate gear 4 changes to the number wheel 2a.
The cam levers 6a-6d released from ~2d and provided on the support plate 6 press against the heart cams (not shown) provided on the side surfaces of the numbered wheels 2a-2d, so that the numbered wheels 2a-2
d can be zero-aligned.

In the above configuration, the rotation from the drive gear (not shown), which is appropriately reduced in speed from the rotation obtained from the vehicle axle, etc., is lower in the integration needle that displays the distance traveled, such as the speed needle used in automobiles, construction machinery, etc. The rotation is transmitted to the number wheel 2a of the digit, and sequentially transmitted to the number wheel 2d of the higher digit via the intermediate gear 4, so that the mileage and the like are cumulatively displayed. To return the integration needle to zero, push the knob shaft 12 from the large diameter side of the conical slope 11a of the pulley 11 in the direction of the small diameter, and the radial end 13a of the idle gear l and the conical slope 11a Since the pressure contact portion moves from the small diameter side to the large diameter side of the conical slope 11a, the idle gear 13 rotates, and rotation is transmitted to the gear portion 16a via the gear portion 13b (4) of the idle gear 13, Drive gear 16
rotates. Shaft 8 fixed to drive gear 16
When rotates, the intermediate gear 4 held on the support plate 6 fixed to the shaft 8 is released from the number wheel, and the cam levers 6a to 6d provided on the support plate 6 engage the heart cams ( (not shown), these number wheels 2a to 2d can be aligned to zero. The stroke of the knob shaft 12 required to align each number wheel 2a to 2d is the stroke of the pulley 11.
By changing the amount of change between the large diameter part and the small diameter part of the conical slope 11a, the distance between the knob shaft 12 and the gear shaft 14, the distance between the shafts 14 and the shaft 8, and the gear ratio, Can be set.

Another embodiment of the present invention will be described with reference to FIG. Third
In the figures, only the parts that are changed from the previous embodiment will be explained. A pulley 11 having a conical slope 11a is held movably in the axial direction by a knob shaft 12, and both ends of this shaft 12 are fixed to the frame (5) 1. The pulley 11 integrally has a knob portion 11C bent in an L-shape from the side surface of the pulley and extending coaxially with the knob shaft 12. When the knob portion 11c is pressed, the pulley 11 moves in the axial direction on the shaft 12 and moves from the small diameter side to the large diameter side of the conical slope 11a. The cars 2a to 2d can be aligned back to zero. Here, since the rod-shaped convex portion 11b provided on the pulley 11 is fitted into the long groove 1a of the frame body 1, movement of the knob portion 11c in the rotational direction can be restricted and the knob operation can be facilitated. can.

In each of the embodiments described above, a pulley having a conical slope is used, but the same function can be obtained by using a long pulley having a slope instead of a conical shape.

Further, although the idle gear 13 and the drive gear 16 are meshed with gears to transmit the rotation, the rotation may be transmitted by a rubber pad or the like with high friction. Furthermore, instead of pushing the knob shaft 12 or the knob part IIIC,
It may be configured such that the bar-shaped convex portion 11b is pushed (6). Alternatively, the idle gear 13 may be omitted and the drive gear I6 may be directly pressed and rotated by the pulley 11. In this case, the drive gear 16 may be configured as a simple fan-shaped rotating body with the gear portion 16a omitted. Bye.

As described above, in the present invention, the knob shaft is horizontally suspended on the frame in parallel with the numerical axle, and a pulley having an inclined surface is provided on the knob shaft, and the zero return rotating body is moved by the axial movement of this pulley. The pulley is pressed by the slope and rotates, and the zero return member is rotated in conjunction with the rotation of the zero return rotating body to align each number wheel back to zero. By pressing , each number wheel can be aligned back to zero, which has the excellent effect of preventing erroneous operation of the operating knob.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional perspective view showing an embodiment of the device of the present invention;
FIG. 2 is a front view of the main part of the apparatus shown in FIG. 1, and FIG. 3 is a partially sectional oblique view (7) showing another embodiment of the apparatus of the present invention. DESCRIPTION OF SYMBOLS 1... Frame body, 2a-2d... Number wheel, 4... Intermediate gear, 6.6a-6d, 7.8... Support plate, cam lever, arm part, support which constitutes a zero return member Plate shaft, 11... Pulley, 11a... Conical slope, 12... Knob shaft, 13.16...
・Idle gear and drive gear that make up the rotating body for zero return. Representative Patent Attorney Takashi Okabe (8) 1st Cause Figure 2 Figure 3

Claims (1)

[Claims] In the totalizing hand, which is rotatably supported on a number axle horizontally mounted on a frame body, the totalizing hand is rotatably driven from the lower digit of each number wheel to the higher order digit via an intermediate gear, in parallel with the number axle. A knob shaft that is horizontally suspended on the frame, a pulley having a slope provided on the knob shaft, and a zero return rotating body that is rotated by being pressed by the slope of the pulley as the pulley moves in the axial direction. and a zero-returning member that rotates in conjunction with the rotation of the zero-returning rotating body to align the number wheels to zero.