JPS638515B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a zero-return type totalizer that can accurately align and display the zero digits of each number wheel in correspondence with the display window position.

[Conventional technology]

Generally speaking, this type of zero-return totalizer is described in US Patent Specification No. 2077667 and US Patent Specification No.
As disclosed in No. 2658685 or Japanese Utility Model Publication No. 42-9649, a plurality of number wheels are inserted through a rotating shaft and the respective number wheels are linked by rotating this rotating shaft in a certain direction. When activated, the zero digits provided on the outer circumferential surface of each number ring are arranged and displayed in the display window of the totalizer.

By the way, in the return-to-zero totalizer with the above configuration, when the rotating shaft is rotated in a certain direction to display the zero digits on the number wheel in line in the display window of the totalizer, the zero digits are rotated to a position where the zero digits pass through. In this case, the rotating shaft may have to be rotated again until a zero digit is displayed in correspondence with the display window.

For this reason, Publication of Utility Model Publication No. 35-5155, Publication of Utility Model Publication No. 55-55
As disclosed in Publication No. 81713 and Japanese Utility Model Publication No. 51-205, a cam plate is fixed to a rotating shaft so as to be able to rotate together with the rotating shaft, and a part of the outer peripheral surface of this cam plate is cut out. This positioning part is arranged in a positional relationship such that the numbers displayed on the number wheel are aligned to zero in the display window by rotating the rotating shaft, and the positioning part is arranged on the side of the frame that pivotally supports the rotating shaft. The proximal end of a leaf spring is fixed with a screw or the like, and the distal end of the leaf spring is resiliently biased against the outer peripheral surface of the cam plate.

Therefore, at least during zero return alignment, the leaf spring engages with the positioning portion formed on the cam plate, so that it is possible to discern by feeling the change in the rotational force of the rotation shaft due to the elastic force of the leaf spring at the time of this engagement. something is proposed.

[Problem that the invention seeks to solve]

With conventional zero return devices, the cam plate can be assembled together with the general totalizer mechanism such as a number wheel on the rotating shaft, but the plate spring requires a completely different assembly process, which requires unnecessary work. It takes a lot of assembly time, and in order to manufacture it, the leaf spring must be attached to the frame side with screws etc. in a resilient state on the cam plate. The area where the cam plate falls into the positioning part of the cam plate must be set in a positional relationship that corresponds to the display window, and then the leaf spring must be fixed to the frame side with screws, etc., which makes assembly difficult and inefficient. In addition, it is necessary to protrude the leaf spring from the frame side to the cam plate position, and the mounting space is likely to be limited, which tends to make the device structure complicated and large.

[Means for solving problems]

A feature of the present invention is that a plurality of number wheels are rotatably inserted through a rotation shaft, the rotation shaft is supported on a frame, and the number wheels are rotated in one direction by rotating the rotation shaft in one direction. In a return-to-zero totalizer that operates in a linked manner and is capable of displaying the zero digits of each number wheel in the display window of the totalizer in a zero-aligned manner, a rotary member is inserted through the rotary shaft and the rotary member is rotated. The rotating shaft is fixed to prevent rotation, and a fixing member is inserted through the rotating shaft, and the fixing member is locked to the frame side, and the rotating member and the fixing member are arranged side by side. The rotating member and the fixed member are provided with a locking mechanism that provides resistance to rotation of the rotating shaft immediately after the shaft is rotated and the zero digits are displayed in the display window at least in a zero alignment.

[Effect]

By rotating the rotation shaft in one direction, each number wheel is operated in conjunction with each other, and the zero digits provided on the outer circumferential surface of the number wheel are aligned to return to zero in correspondence with the display window of the totalizer.

During this operation, at least after the zero numbers are displayed in the display window in alignment due to the rotation of the rotation shaft, resistance is applied to the rotation of the rotation shaft by the locking mechanism between the rotation member and the fixed member, and a response is felt. This makes it possible to recognize that the zero digits have been zero-aligned in the display window.

[First example]

Figures 1 to 6 show a first embodiment of a zero-return type totalizer to which the present invention is applied, in which each number ring can be zero-aligned in the display window of the totalizer. A number ring 2 is rotatably inserted through the number ring 2, and a pinion holder 4 is interposed between each of the number wheels 2, which rotatably supports a pinion gear 3 for sequentially shifting from the lower digit to the higher digit. .

In addition, in this embodiment, an engaging portion 5 consisting of a protrusion is formed on one side of each number ring 2, and the engaging portion 5 is inserted into and fixed to the rotating shaft 1 in a spiral shape and has a different plane. The claw plates 6 formed in a continuous manner lock each other and are arranged to slide. When the rotating shaft 1 is rotated in one direction, the claw plates 6 engage with the engaging portion 5. However, the number wheel 2 is configured so that it can be forcibly rotated to return to zero.

Further, a fixing member 7, which is the gist of the present invention, is inserted through the rotating shaft 1, and this fixing member 7 is attached to the frame 8.
At least one first locking portion 9 is formed on the fixing member 7.

Further, a rotating member 10 is provided on the rotating shaft 1 adjacent to the fixing member 7, and the rotating member 10 has a second engagement member that can be engaged with and detached from the first engagement portion 9 of the fixation member 7. A locking portion 11 is formed, and a locking mechanism S is constituted by each of the locking portions 9 and 11.

More specifically, in this case, a speedometer C consisting of an eddy current type indicator mechanism is equipped with a total mileage totalizer A and a return-to-zero totalizer B.

A main shaft 13 rotated by a flexible wire 12 is provided on the frame 8 side, a gear portion formed on this main shaft 13 and a gear portion formed on a horizontal shaft 14 are meshed, and another gear 15 is formed on this horizontal shaft 14. death,
A gear 17 formed on a vertical shaft 16 is meshed with this gear 15, another gear 18 is formed on the vertical shaft 16, and this gear 18 is meshed with a drive gear 19 rotatably inserted through the rotation shaft 1. The drive gear 19 is rotated by the rotation of the drive gear 19.

The speed meter C detects the rotational torque due to the eddy current action obtained in proportion to the rotational speed of the main shaft 13 and the hairspring 2.
0, the angle is converted in accordance with the vehicle speed, and the pointer 21 is directed as is well known.

The total mileage accumulator A counts the total mileage of the vehicle, and the rotational drive from the main shaft 13 is sequentially branched and transmitted to be integrated.

The shift mechanism of the zero-return totalizer B will be explained in detail.

The number ring 2 has an I-shaped cross section in the radial direction, and continuous teeth 22 are formed on the inner circumferential surface of the number ring 2 on the lower digit side to constantly mesh with the pinion gear 3.
Intermittent teeth 23 that intermittently mesh with the pinion gear 3 are formed on the inner circumferential surface on the upper digit side, and the pinion gear 3 is rotatable on a pin 24 protruding from the pinion holder 4 in parallel with the axis of the rotation shaft 1. is supported by.

Further, the pawl plate 6 is formed with a hole for inserting the rotary shaft 1 so as to be inserted through the rotary shaft 1 and fixed in a non-rotating state, and a protrusion 25 is formed in this hole portion. A keyway-shaped groove portion 26 is formed in the rotation shaft 1 so as to coincide with this protrusion 25 .

Also, the drive gear 1 is adjacent to the number wheel 2 of the lowest digit.
9 is rotatably inserted through the rotation shaft 1, and this drive gear 19 is integrally formed with two elastic legs 27 that serve as one-way clutch means, and these legs 27 are connected to the It is engaged with continuous teeth 22 formed on the number ring 2 of the lower digit.

Also, a plate 28 forming part of the frame 8
A locking lug 29 integrally formed to protrude from the pinion holder 4 is locked to the pinion holder 4, thereby holding the pinion holder 4 against rotation on the frame 8 side.

The pinion gear 3 supported by the pin 24 of the pinion holder 4 is formed by alternately arranging long teeth 30 with a wide tooth width and short teeth 31 with a narrow tooth width. Further, the bent center portion of the torsion coil spring 33 is engaged with the support shaft 32 provided on the pinion holder 4, and one end of the coil spring 33 is engaged with the support shaft 32 provided on the pinion holder 4.
The other end of the coil spring 33 is fixed to the support wall 34 provided on the pinion holder 4.
5, and the teeth of the pinion gear 3 are elastically biased in the radial direction by the center portion on the other end side.

In this case, the short teeth 31 of the pinion gear 3 are located in the center, and the long teeth 30 are located on the left and right sides, and when the pinion gear 3 rotates when carrying the number ring 2, the long teeth 30 push up the torsion coil spring 33, Torsion coil spring 33 at the next short tooth 31 position
The pinion gear 3 rotates to the position where the number wheel 2 falls, the number on the number wheel 2 is added by one number, and each number on each number wheel 2 is displayed on the display window 36.

Further, a zero return knob 37 is fixed to one end of the rotating shaft 1.

The rotating member 10 disposed on the rotating shaft 1 is formed with a hole having a protrusion 38 that engages with a keyway-shaped groove 26 formed on the rotating shaft 1. It engages with the groove 26 of the moving shaft 1 and is held integrally with the rotating shaft 1 to prevent rotation.

Further, a locking ear 39 having approximately the same shape as the locking ear 29 integrally projected from the pinion holder 4 is formed on the fixed member 7 disposed adjacent to the rotating member 10. The fixing member 7 is locked to a plate 28 that forms a part of the frame 8, and is fixedly held on the frame 8 side so as not to rotate.

Further, in this embodiment, a collar 40 is inserted through the rotating shaft 1, and this collar 40 is locked with a clip 41 to restrict and hold the rotating shaft 1 from moving in the axial direction.

Further, reference numeral 42 denotes a fixed piece that rotatably connects the rotating shaft 1 to the frame 8.

Incidentally, the rotating member 10 may be press-fitted onto the rotating shaft 1.

Further, as shown in FIG. 6, the fixed member 7 is engraved with the same number of first locking parts 9 as the number of numbers on the number ring 2, and in this case, the number ring 2 is moved by rotation of the rotation shaft 1. The first locking portion 9 is in a positional relationship that is displayed in zero alignment.
It is desirable to form deep depressions only in certain areas.

Further, the attachment position of the first locking portion 9 is the rotating member 10.
It is only necessary that the second locking portion 11 is provided in a positional relationship such that it can be engaged with and disengaged from the first locking portion 9 while moving, and the shape of the first locking portion 9 is determined according to the shape of the rotating member 10. Any shape that provides resistance when the second locking part 11 is disengaged from the first locking part 9 may be used. Although the locking portion 9 is illustrated,
The magnitude of the resistance is determined by the height of the vehicle, the shape of the locking part 9, the degree of elasticity of the rotating member 10, etc. A locking mechanism S is constructed.

In the above configuration, the operation thereof will be described. When a vehicle such as a car or a motorcycle is running, the main shaft 13 is connected to the main shaft 13 via the flexible wire 12.
rotates, and when the rotation of this main shaft 13 is transmitted to the other gear 18 of the vertical shaft 16 via the gear train, the drive gear 19 meshed with this gear 18 is rotated, and the rotation of this drive gear 19 is The number wheel 2 of the lowest digit that is engaged with the leg portion 27 is rotationally driven, and this number wheel 2
Each rotation of the number wheel 2, the intermittent teeth 23 of the number wheel 2 mesh with the pinion gear 3 to rotate the pinion gear 3, and the rotation of the pinion gear 3 causes the number wheel 2 of the next digit to rotate by one digit, increasing the digit. Driven.

By repeating this, each number wheel 2 is sequentially driven to carry up, and the mileage of the vehicle is displayed from the display window 36 of the totalizer.

Next, the case where the numerical values of each number wheel 2 are zero-aligned will be explained.

When the zero return knob 37 is rotated in one direction, that is, in the forward direction of carrying up the number wheel 2, the pawl plate 6, which is fixedly inserted through the rotary shaft 1, rotates in tandem with the rotary shaft 1. When the end of the plate 6 engages the engaging portion 5 of the number ring 2,
As the rotation shaft 1 rotates, the number wheels 2 are forcibly rotated, and each number wheel 2 is forcibly rotated.

On the other hand, when the rotation shaft 1 is rotated, the rotation member 10 is rotated together with the rotation shaft 1, and as the rotation member 10 is rotated, the second locking portion 11 provided on the rotation member 10 is rotated.
moves and engages and disengages from the first locking portion 9 of the fixing member 7 fixedly disposed on the frame 8 side.

In this case, in this embodiment, by providing the same number of first locking portions 9 as the number of numbers attached to the number ring 2, the second locking portion 1 is provided every time the number rotates by one angle.
1 engages with the first locking portion 10, and a load is applied when releasing this engagement when the rotation shaft 1 rotates.
In other words, when the second locking part 11 passes over the first locking part 9, the second locking part 11 resists the self-elasticity of the rotating member 10.
As the locking part 11 of is displaced and the resistance increases until the engagement is released, it becomes possible to rotate the rotation shaft 1 intuitively each time the number wheel 2 rotates by one number. Also, by rotating the rotation shaft 1, the numbers on each number wheel 2 are aligned to zero in the display window 36.
By setting the depth of the other first locking portion 9, that is, the height dimension corresponding to the step difference, only for the first locking portion 9, the number of the number ring 2 returns to zero at the display window 36 position of the totalizer. When they are aligned, the degree of engagement between the first locking part 9 and the second locking part 11, that is, the load when released from this engaged state, is determined by the degree of engagement between the first locking part 9 and the second locking part 11. Since it is larger than the normal state, it can be thought of as a sensation that is applied to the hand as a response.

Also, the rotation shaft 1 has a number ring 2 and a pinion holder 4.
At the same time as the totalizer mechanism is assembled, the fixed member 7 and the rotating member 10 can be installed in parallel, and thereby the totalizer mechanism and the positioning mechanism for zero alignment can be assembled as one unit. The assembly process is not a separate process as in the past, making it possible to increase work efficiency.Furthermore, the fixed member 7 and the rotating member 10 are arranged inside both walls of the frame 8 together with the totalizer mechanism. It can also be stored compactly without taking up much space.

Further, the rotating member 10 is inserted into the rotating shaft 1 and the rotating member 10 is fixed to the rotating shaft 1 so as not to rotate, and the fixing member 7 is inserted into the rotating shaft 1, and the fixing member 7 Since the structure is such that the rotating member 10 and the fixed member 7 can be assembled based on the rotating shaft 1, the locking mechanism S provided on the rotating member 10 and the fixed member 7 can be attached to the frame 8 side. The relative positions of the parts can be determined accurately and easily, and the efficiency of assembly work can be improved.

[Second example]

FIG. 7 shows a second embodiment of the present invention, in which only one second locking portion of the rotating member 10 is provided on the fixed member 7 in a positional relationship in which the number ring 2 is displayed aligned with zero. 11 is formed, and the first locking portion 9 and the second locking portion 11 constitute a locking mechanism S.

Therefore, in the case of the second embodiment, immediately after the rotation shaft 1 is rotated and the zero digits of the number wheel 2 are displayed in the display window 36, the rotation shaft 1 is further rotated. Then, the second locking part 11 engages with the first locking part 9 and rides on it, increasing the load applied to the rotating shaft 1. This causes the driver to instantly notice that the return alignment has been completed. It can be recognized based on the physical response.

〔Effect of the invention〕

As described above, the present invention includes rotatably inserting a plurality of number wheels into a rotating shaft, supporting the rotating shaft on a frame, rotating the rotating shaft in one direction, and rotating the rotating shaft in one direction. In the return-to-zero type totalizer, in which the wheels are linked and the zero digits of the number wheel can be displayed in the display window of the totalizer in zero alignment, a rotary member is inserted through the rotary shaft, and the rotary member is The rotation shaft is fixed to the rotation shaft, and the fixing member is inserted through the rotation shaft,
The fixing member is locked to the frame side, the rotating member and the fixing member are arranged side by side, and the rotating shaft is rotated so that at least the rotation immediately after the zero numbers are displayed in alignment on the display window. Since a locking mechanism that provides resistance to the rotation of the moving shaft is provided on the rotating member and the fixed member, the driver can be made aware of the tactile sensation when the number wheel returns to zero alignment, and the locking mechanism can be engaged at the same time as the totalizer mechanism is assembled. A positioning mechanism consisting of a rotating member provided with a stop mechanism and a fixed member can be assembled easily and accurately, and the efficiency of the assembly work can be improved.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is an overall plan view of the first embodiment, FIG. 2 is a front view thereof,
Fig. 3 is an exploded perspective view of the zero-return type totalizer, Fig. 4 is a perspective view of its number ring, Fig. 5 is a longitudinal sectional view of its main parts, and Fig. 6 is a side sectional view of its main parts. FIG. 7 is a side sectional view of the main part of the second embodiment. DESCRIPTION OF SYMBOLS 1... Rotating shaft, 2... Number ring, 7... Fixed member, 8... Frame, 10... Rotating member, 36...
...display window, S...locking mechanism.

Claims (1)

[Claims] 1. A plurality of number wheels are rotatably inserted into the rotating shaft, and the rotating shaft is supported by a frame, and the rotating shaft is rotated in one direction to operate the number wheels in conjunction with each other. In a return-to-zero totalizer that is capable of displaying the zero digits of the number ring in the display window of the meter, a rotating member is inserted through the rotating shaft and the rotating member is rotated about the rotating shaft. fastening and fixing, and inserting the fixing member into the rotating shaft, and locking the fixing member to the frame side, and arranging the rotating member and the fixing member side by side,
A locking mechanism is provided on the rotating member and the fixed member to provide resistance to rotation of the rotating shaft immediately after the zero numbers are displayed in the display window at least in alignment with zero by rotating the rotating shaft. A zero-return totalizer featuring: