JP3124345B2 - Reverse prevention type integrator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrator used as, for example, an odometer for an automobile, and more particularly to an integrator provided with a mechanism for preventing a reversing of the integrating vehicle.

[0002]

2. Description of the Related Art An integrator which is installed in an automobile and displays the total distance traveled by the automobile is a type in which the integrated vehicle rotates forward when the automobile moves forward and the total travel distance is displayed. Since the integrator without the reverse rotation prevention mechanism was capable of rotating the integrating vehicle of the integrator in the reverse direction, for example, the speedometer shaft or the like was reversed by a motor or the like to reversely display the integrating vehicle. Decrease the value so that
For example, it was possible to perform fraud to make trading of used cars and the like advantageous.

Therefore, as a means for preventing such misconduct, a drive gear 2 having a ratchet 1 is provided as shown in FIG. 1 and, as shown in FIG.
The rear teeth 9b for the double feed teeth 9 composed of the teeth a and the rear teeth 9b are cut out to form front teeth 9a and tooth grooves 9 as shown in FIGS.
An integrator 3 for preventing reverse rotation has been proposed. In other words, the specific structure of the integrator 3 is such that two parallel support shafts 5 and 6 are respectively installed and held on an instrument frame 4, and one of the support shafts 5 has the drive gear 2 and 1/10 the integrated wheel 7 ₁ to display the digit miles, the integrated car 7 ₂ to display a 1-digit mile, the integrated wheel 7 ₃ to display a 10-digit miles, 100
The integrated wheel 7 ₄ for displaying the digit miles, the integrated wheel 7 ₅ for displaying a 1000-digit miles, the integrated wheel 7 ₆ for displaying the 10000-digit Mile, and the integrated car 7 ₇ each integrated car to display 100,000-digit miles They are inserted and supported sequentially in a skewered manner.

[0004] These accumulator wheel 7 _{1-7 7} shift pawl group 8 on the right side in the drawing of formed, also on the left side those two teeth 9 for shifts is formed integrally is there.

[0005] The other support shaft 6 is located between the aforesaid integrating wheels, and has short teeth 10 constantly meshed with the above-mentioned shift-feeding pawl group 8 and a long tooth meshed with the tooth groove 9c. A plurality of pinions 12 having teeth 11 are inserted and supported in a skewered manner.

[0006] Then Describing based on FIG. 3 the reversal preventive action, been reversed order of magnitude mile accumulator wheel 7 ₂ Gaya direction (A), when the Sakiha 9a has been close to the pinion 12 Since the rear teeth 9b are not provided, the short teeth 10 of the pinion 12 are not kicked, and the leading teeth 9a are brought into contact with the short teeth 10 of the pinion 12 without rotation of the pinion 12 (FIG. 3). State). For long teeth 11 of the pinion 12 abuts against the outer peripheral surface of one digit mile display accumulator wheel 7 ₂ in this state, the reverse rotation of one digit mile display accumulator wheel by the contact force is prevented (locked), This prevents the accumulated vehicle from reversing.

[0007]

[SUMMARY OF THE INVENTION However, in the totalizer to androgynous such reverse rotation preventing mechanism, a plurality of accumulator wheel 7 _{1-7 7} which is supported by the comb through shape by the support shaft 5
Between each accumulator wheel mutual, although small gap in order to make it easier to rotate the integrated wheel 7 _{1-7 7} each is independently is held, such accumulator wheel mutual gap, specifically, when the gap between the mutually with one digit mile display accumulator wheel 7 ₂ 10 digits miles display integrated wheel 7 _3, which intends to become the forward state from reverse lock state by the reverse rotation preventing action, on the integrated meter,
Acts is vibration of the vehicle body, or or with both accumulator wheel 7 ₂ and 7 ₃ are closely enough to the gap is eliminated, by the pinion 12 come close to one digit mile display accumulator wheel 7 _two directions, the order of magnitude short teeth 10 of the pinion 12 in the tooth groove 9c is engaged (interference) which is formed on the mileage display accumulator wheel 7 _2, totalizer is forward of the order of magnitude mile display accumulator wheel 7 ₂ impossible There is a problem that the integration operation of the above becomes impossible.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem. In the integrator provided with the above-described reverse rotation preventing mechanism, the tooth space provided in the one-digit mile display integrated wheel is provided. An inclined surface is formed on the facing surface of the single tooth of the groove so as to gradually increase the groove width from the depth of the groove toward the groove opening. A pinion short tooth meshed with the tooth space is pushed outward to release the mesh between the pinion short tooth and the tooth groove so that the forward rotation of the integrated wheel is not prevented. To provide an integrator.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIG. 5. In this embodiment, there is a feature in a tooth groove shape provided in a single-digit mileage integrator. The other structure is the same as the structure shown in the conventional example. Therefore, the same structure is denoted by the same reference numeral used in the conventional example, and the description of the same structure is omitted.

[0010] That is, in this embodiment, the opposing wall 9d of one tooth 9a which forms a tooth space 9c provided on the accumulator wheel 7 ₂ that displays one digit mile Mizooku the tooth groove 9c And an inclined surface 9e formed so that the groove width gradually increases toward the groove opening.

[0011] By providing the tooth groove 9c of such a shape, when attempting to forward to the one digit mile display accumulator wheel 7 ₂ Gaya direction (B), are engaged in the tooth groove 9c is short tooth 10 is extruded out of the tooth groove 9c by the inclined surface 9e of the pinion 12, melting the engagement between the short teeth 10 and the tooth space 9c, a result, an order of magnitude mile display accumulator wheel 7 ₂ drive gear 2 With this rotation, the operation is recovered to a smooth forward rotation operation.

Therefore, after locking to prevent reverse rotation of the integrated vehicle, if the normal rotation input of the integrated vehicle is returned, the pinions 12 and 1
Also digit mileage display accumulator wheel 7 ₂ and is in the locked state, by its non-inverting input, the pinion 12 by the inclined surface 9e
By pressing in the thrust direction, the locked state is released, thereby preventing damage to the integrator and recovering the accurate integrated display.

[0013]

As described above, the present invention provides a plurality of integrated vehicles 7 _1
7-7 while being pivoted adjacent the upper shaft 5, said adjacent carry pinion 12 Nagaha 11 and Tanha 10 between both accumulator wheel ₇₁ to 7 ₇ formed alternately the Both accumulated vehicles 7 ₁ ~
7 ₇ is disposed so as to rim meshing, and the lower digit accumulator wheel 7 _{1-7 7} upper digit accumulation of the long and one tooth 9a meshing with the short tooth 10 at the peripheral facing wheel teeth 11 In the reverse rotation preventing type integrator in which one tooth groove 9c meshing with the tooth is formed, the opposing surface 9d of the single tooth 9a of the tooth groove 9c is provided.
In addition, since it is a reverse rotation preventing type integrator provided with an inclined surface 9e that gradually widens the groove width from the depth of the groove toward the groove opening, according to this, after locking for preventing reverse rotation of the integrating vehicle, Returning to the non-inverting input of the accumulator wheel, lock the pinion 12 and even the order of magnitude mile display accumulator wheel 7 ₂ in the locked state, the non-inverting input, in the thrust direction pushing of the pinion 12 by the inclined surface 9e The state is eliminated, whereby the effect of preventing damage to the integrator and recovering the accurate integrated display can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a conventional integrator.

FIG. 2 is an operation explanatory view of a conventional example without a reverse rotation prevention mechanism.

FIG. 3 is an operation explanatory view of a conventional example having a reverse rotation prevention mechanism.

FIG. 4 is an explanatory front view of only a conventional integrated vehicle.

FIG. 5 is an explanatory front view of only the integrating vehicle according to the embodiment of the present invention.

[Explanation of symbols]

7 ₂ … Single digit mile display accumulative car 9a… Tip tooth 9c… Tooth groove 9d… Opposite wall surface 9e… Inclined surface

Claims (1)

(57) [Claims] 1. A plurality of accumulator wheel (7 ₁₎ to (7 ₇₎ while being pivoted adjacent the upper support shaft (5), said adjacent two accumulator wheel (7 ₁₎ to ₍₇ 7) Long tooth (11) and short tooth (1
0) carry pinions (12 formed alternately) of the two accumulator wheel (7 ₁₎ to (7 ₇₎ is arranged to the peripheral meshes of, and the lower digit accumulator wheel ₍₇₁₎ - A single tooth (9a) meshing with the short teeth (10) and a single tooth groove (9c) meshing with the long teeth (11) are formed on the periphery of the (7 ₇ ) facing the upper digit accumulation wheel. In the reverse rotation preventing type integrator, an inclined surface (9e) for gradually increasing the groove width from the depth of the groove toward the groove opening is formed on the surface (9d) of the tooth groove (9c) facing the single tooth (9a). ) Is provided.