JPH0449729Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is applicable to the display wheel of a mechanism for indicating the timing of engine oil change and maintenance inspection such as tire rotation in vehicles, the number wheel of a zero-return type totalizer, etc. This relates to a reset device.

[Conventional technology]

The conventional reset device of this type was
Publication No. 55605, Publication No. 55-10843, Publication No. 10843, Publication No. 10843
−8782 Publication, Utility Model Publication No. 59-2599, Utility Model Number 59
Publication No. 4427 is mentioned.

Figure 7 shows the conventional structure of the inspection time display mechanism.
To explain its structure, reference numeral 51 is an inspection time display mechanism, and the display wheel 52 is rotated little by little according to the number of miles traveled. After the maintenance is completed, insert the car key 56 into the slit 55 of the rubber plate 54 at the opening of the case 53 and press the operating rod 5.
7 against the return spring 58, and the reset member 6 is pushed by the actuating arm 59 fixed to the actuating rod 57.
0, thereby rotating the reset shaft 61, so that the display wheel 52 can be reset and rotated via an internal reset mechanism (not shown).

These structures are almost the same in the case of a zero-return type totalizer, and of course, in this case, the display wheel 52 becomes a number wheel.

[The problem that the idea attempts to solve]

However, in the case of the above-mentioned conventional structure, a return spring 58 in the form of a compression coil spring is provided as a means for returning the actuating members such as the actuating rod 57 and the actuating arm 59, which tends to complicate the mounting structure. This has disadvantages in that parts costs increase and assembly work efficiency deteriorates.

[Means to solve the problem]

The purpose of the present invention is to solve these inconveniences, and the gist of the invention is to provide a reset member that can rotate to reset the display wheel of the inspection time display mechanism, the number wheel of the zero-return type totalizer, etc., and the reset member. The actuating member is made of synthetic resin and is capable of pushing the member, and a spring portion for returning the actuating member is integrally formed with the actuating member, and the actuating member has one end serving as a proximal end and the other being free. The actuating member is disposed in a cantilevered state, and the free end of the actuating member is disposed opposite to the reset member, and a push operation portion is disposed between the proximal end and the free end of the actuating member. A reset device is characterized in that it is configured as follows.

[Effect]

When the pushing operation part located between the proximal end and the free end of the cantilevered actuating member is pushed against the spring part, the free end of the actuating member pushes the reset member, and the reset member By pushing and moving, the display wheel of the inspection time display mechanism and the number wheel of the zero-return type totalizer are reset and rotated, and when the push operation part of the actuating member is released, the actuating member moves to the spring part. The reset member moves back due to its self-elastic action.

〔Example〕

1 to 6 show preferred embodiments to which the present invention is applied, and FIGS. 1 and 2 show the first embodiment, FIG. 3 shows the second embodiment, and FIG. 4 shows the third embodiment. Figure 5 is the fourth
Embodiment FIG. 6 is a fifth embodiment.

To explain the first embodiment shown in Figs. 1 and 2, this embodiment shows an inspection time display mechanism, and 1 is an indicator wheel which rotates according to the number of miles traveled via an odometer etc. not shown. The display is rotated via the shaft 2, gears 3, 4, 5, internal mechanism, etc.

Further, in the reset structure of the first embodiment, a reset shaft 7 is rotatably supported on the frame 6, a transmission gear 9 meshing with a gear 8 linked to the display wheel 1 is fixed to the reset shaft 7, and the reset shaft is rotated. A heart cam portion 10 is formed at 7, a fulcrum shaft 11 is supported at a side position of the reset shaft 7, and a reset member 12 is mounted on the fulcrum shaft 11.
is fixed, a concave reset member 13 that engages with the heart cam portion 10 is formed in the reset member 12, a pressure receiving portion 14 is formed, and the actuating member 15 is moved in a direction separating the heart cam portion 10 and the reset member 12. A separation spring 16 for rotation is provided.

The actuating member 15 of this first embodiment is a square rod-shaped member made of synthetic resin, and is disposed in a cantilevered manner on the case 17, with one base end pivotally connected to a fulcrum pin 18 protruding into the case 17. The other free end is used as a pressing part 19 and is disposed opposite to the pressure receiving part 14 of the reset member 12, and a flat plate-shaped spring part 20 is integrally formed. A rubber plate 23 that abuts the rising wall 21 that stands up integrally and has a slit 22 at the opening of the case 17.
is mounted at a position facing the slit 22 to form a push operation section 24 between the base end and free end of the actuating member 15.

Since the first embodiment has the above configuration, the slit 2
When the car key is inserted into 2 and the push operation part 24 of the actuation member 15 is pressed, the actuation member 15 is pushed and swung about the fulcrum pin 18 and the spring part 20
is bent by being pressed by the rising wall 21, and due to this pushing and swinging movement of the actuating member 15, the pressing portion 19, which is the free end of the actuating member 15, pushes the pressure receiving portion 14 of the reset member 12, and the Then, the reset member 13 swings, the reset member 12 comes into pressure contact with the heart cam part 10, the reset shaft 7 rotates to reset, and the display wheel 1
is reset, and then when a car key or the like is pulled out of the slit 22, the actuating member 15 is released, and the actuating member 15 returns due to the self-elastic action of the bent spring portion 20.

Therefore, unlike the conventional structure, there is no need for a separate spring for return, and the accompanying structure is also unnecessary, which reduces parts costs and improves assembly work efficiency.Moreover, it is possible to reduce the cost of parts and improve the efficiency of assembly. The actuating member 15 is arranged in a cantilever state with the other end being a free end, and the free end of the actuating member 15 is placed opposite the pressure receiving part 14 of the reset member 2, and the proximal end and free end of the actuating member 15 are arranged in a cantilevered state. Since the push operation section 24 is disposed in between, the distance from the base end to the free end is longer than the distance from the base end as the center of swing of the actuating member 15 to the push operation section 24. The displacement at the position of the moving operation part 24 can be expanded at the position of the pressing part 19 which is the free end, and the amount of pushing of the reset member 12 can be increased with a small amount of pushing operation. The reset member 13 can sufficiently engage with the heart cam part 10 to enable a reliable reset operation, and the amount of push operation of the push operation section 24 can be reduced to improve operability. In addition, the reset member 1 can be reset with a small amount of push operation.
2, the amount of pushing force can be increased, and the applications can be expanded accordingly.Moreover, since the setting positions of the pushing operation part 24 and the pressing part 19, which is the free end part, can be determined separately, these setting positions can be flexible. As a result, constraints on the arrangement design of instrument component members, etc. are relaxed, and the design effect of the instrument can be improved accordingly.

The second embodiment shown in FIG. 3 is different from the first embodiment in the shape of the push operation part 24 and the shape of the rubber plate 23. That is, the rubber plate 23 of the first embodiment has a slit 22.
In addition, the pushing operation part 24 is made to protrude outward from the case 17, and this is covered with a rubber plate 23, so that the reset operation can be performed using a finger.

In the third embodiment shown in FIG. 4, the base of the actuating member 15 of the second embodiment is fixed to the fulcrum pin 18 by means such as crimping, and the plate-shaped spring part of the first embodiment is not formed. A spring portion 20 is provided between the fulcrum pin 18 and the push operation portion 24.

Further, in the fourth embodiment shown in FIG. 5, the rubber plate 23 without slits is formed into a flat plate shape so that it can also be reset with a finger.

The second to fourth embodiments also obtain the same effects as the first embodiment.

The fifth embodiment in FIG. 6 shows the case of a return-to-zero totalizer, and in this case, the display wheel 1 of the above embodiment is replaced by the number wheel 2.
5, and unlike the spring part 20 of the first embodiment, the spring part 20 is integrally formed on the opposite side,
The tip portion thereof is adapted to come into contact with the case 17 side.

In this sixth embodiment, when the push operation portion 24 of the actuating member 15 is pushed through the rubber plate 23, the pressure receiving portion 14 of the reset member 12 is moved to the press portion 19 which is the free end.
, the feed pinion 26 comes off, the reset member 13 comes into pressure contact with the heart cam part 10 as described above, the reset wheel 7 rotates, each number wheel 25 is rotated back to zero, and then the rubber plate 23 is pressed by a finger or the like. When the actuating member 15 is released by releasing the button, the actuating member 15 moves back due to the self-elastic action of the spring portion 20, thereby causing the first
The same effects as in the example are obtained.

[Effect of idea]

As mentioned above, the present invention eliminates the need to assemble and deploy a separate spring to return the actuating member, eliminates the need for the associated structure, simplifies the configuration, reduces parts costs, and reduces assembly work. In addition, the displacement at the position of the push operation part can be expanded at the position of the free end opposite to the reset member, and the amount of push of the reset member can be increased with a small amount of push operation. Reliable reset operation is possible, and the amount of push operation can be reduced to improve operability.Moreover, the setting positions of the push operation part and the free end can be determined separately, so these setting positions can be adjusted. Flexibility is achieved, restrictions on instrument design are relaxed, and design effects can be improved.

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

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Figure 1 is a plan sectional view of the main part, Figure 2 is a cross-sectional view thereof, and Figure 3 is a cross-sectional view of the main part.
The figure is a plan sectional view of the main part of the second embodiment, and FIG.
5 is a plan sectional view of the main part of the fourth embodiment, FIG. 6 is a cross-sectional view of the main part of the fifth embodiment, and FIG. 7 is a cross-sectional view of the conventional structure. It is a front view. 1...Display wheel, 2...Reset member, 15...
Actuation member, 20... Spring part, 24... Push operation part, 25... Number ring.

Claims (1)

[Scope of utility model registration request] It is equipped with a reset member that can rotate to reset the display wheel of the inspection time display mechanism, the number wheel of the zero-return type totalizer, etc., and an operating member made of synthetic resin that can push the reset member. A spring portion for returning the actuating member is integrally formed, and the actuating member is disposed in a cantilevered state with one end serving as a proximal end and the other serving as a free end, and the free end of the actuating member is 1. A reset device comprising a push operation section disposed opposite to a reset member and between a base end and a free end of the operating member.