JPS58135524A - Incrementing mechanism - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sidewalk mechanism that changes the state of stepping motion one step at a time over a plurality of steps, and in particular, a sidewalk mechanism that can provide reliable sidewalk motion for each rotation, especially rotation in both forward and reverse directions. The aim is to provide the following.

Hereinafter, one embodiment of the present invention applied to an automobile wiper switch will be described with reference to the drawings. First, in FIG. 1, 1 is an outer body, 2 is an inner body, and 3 is an inner body. This is a shaft installed in the inner body 2, and this shaft ↑I shaft 3
In the figure, from the left side, support vehicles 4. Passive vehicle 5 and stator 6
The support vehicle 4 and the passive vehicle 5 are both rotatable in both forward and reverse directions as indicated by arrows Δ and B in the figure, while the stator 6 has an arm 7 attached to the inner body 2. The structure is such that it cannot rotate due to the structure in which it is locked to C, but it is provided so that it can move in the axial direction together with the support vehicle 4 and the driven vehicle 5, and a compression spring 8 is provided on the side of the driven vehicle 5 in the direction of movement. It is giving the impetus to attack. Further, a plurality of teeth 9 are formed in a radial shape on the end face of the stator 6 on the driven wheel 5 side (on the other hand, teeth 10 are similarly formed on the end face of the driven wheel 5 on the stator 6 side). (see Fig. 2), so that the above-mentioned rotation of the driven wheel 5 is provided with moderation that synchronizes with each of the forward and reverse rotation teeth, which will be described later. 12 is a contact plate on the movable side provided on the outer peripheral surface of the driven wheel 5, and 12 is a contact plate on the fixed side attached to the inner body 2. A wiper (not shown) is switched from a stopped state to four stages, for example, an intermittent operating state, a low-speed continuous operating state, and a high-speed continuous operating state.On the other hand, 13 is a half area of the end face of the passive vehicle 5 on the support vehicle 4 side. Set in
14 is a tooth for reversal installed in the remaining part of the same part, as shown in Fig. 3 (as shown in the direction of arrow A and the direction of arrow B). It consists of teeth 14a to 14d and 61!113a to 13d with different directions.On the other hand, 15 and 16 have a stone on the end face on the side of the passive middle 5 in 15 and 16. Zurubin 17 and 1
The first and second claws have a loose fit for 8 people,
Among them, the first one = - claw 15 is connected to one side of the inner cover 2 by means of a twist bay 121 installed between [the nearest bin surrounding the bottle 17] 9 and the bin 20 of the claw 15. A biasing force is applied to the blocking wall 22 so that it engages with the teeth 13a for forward rotation of the driven vehicle in the direction of the arrow claw, while the second claw 16 surrounds the bin 18. Again, the torsion spring 25 installed between the nearest bin 23 and the bin 24 of the pawl 16 applies a biasing force to the other blocking wall 26 of the inner cover 2, and now the gear for reversing the driven wheel 14d It is provided so as to be engaged in the direction of arrow B. And again,
1 shows a biasing force 27 for the assistance vehicle 4 so that it always returns to the neutral position where it is not biased in the direction of the arrow claw and in the direction of arrow B, that is, neither in the forward rotation direction nor in the reverse rotation direction. Furthermore, 28 is an arm of the assistance vehicle 4 that protrudes outside the outer cover 1, and a knob 29 is also provided at the tip of this arm 28.

Therefore, in the case of this embodiment configured as shown in -F, if the knob 29 is pushed downward now, the support vehicle 4 is operated to rotate forward from the rotation operation part in the direction of arrow A, and thereby the bin 17 The first pawl 15, which is moved in the same direction through the blocking wall 22, presses @13a with its inclined tip as shown in Fig. 4, so the passive middle 5 rotates in the direction of the arrow pawl. In other words, it is rotated in the normal direction. Then, when the third pawl 15 has fully pushed the tooth 13a, the driven wheel 5 is moved by the a given by the stator 6.
The movable contact plate 11 and the fixed contact plate 12 are intermittently operated at this position, and therefore the wiper is not activated. The first pawl 15 operates intermittently, and on the other hand, after the operating force on the knob 29 is released, the first pawl 15 returns along with the assistance vehicle 4 which is returned to the neutral position by the biasing force of the torsion spring 27. 1li13a to next stage tooth 13
b and engages with the tooth 131) (fifth
(see figure). Therefore, when the knob 29 is pushed downward again and operated, the first pawl 15 is moved to the first 13b in the same manner as described above.
is pressed to rotate the driven wheel 5 one more step in the forward direction, and the wiper is brought into a low-speed continuous operating state, and changes from the stone to engagement with the next step #13c. Then, if the button 129 is pushed downward once again, the first pawl 15 pushes the teeth 13c and the driven wheel 5 is rotated in the forward direction once again, so that the wiper is switched to the final high-speed continuous operation state. However, at this time, the first pawl 15 that returns beyond the final stage tooth 13d is caused by the fact that the tooth 13d is in the shape of a chevron as shown in FIG. After climbing over the slope, the user slides down the slope, and the pushing operation of the knob 29 of the bond that has reached the above-mentioned final stage state is invalidated. On the other hand, up until now, each time the forward rotation of the driven wheel 5 advances step by step, the second pawl 16 is first moved by the teeth 14d, then by the teeth 14C, and finally by the teeth 14b as shown in FIG. As a result, they are each pushed in in the opposite direction to the first pawl 15, repeating a so-called escape movement, and finally reach a state where they engage with the teeth 14a as shown in FIG. Therefore, when the knob 29 is pushed up from this state in the opposite direction to that described above, the driven wheel 5 is reversed one step at a time by the second pawl 16 of the teeth 14a, 14b, and 14C, and therefore the wiper is also brought into the high-speed continuous operation state. From there, it goes through a low-speed continuous operating state and an intermittent operating state in order, and then returns to the original stopped state. Of course, during this time, it goes without saying that the first claw 15 repeats the escape movement in the same way as the second claw 16.

In addition to I-, especially in this embodiment, when the knob 29 is slid in the direction shown by arrow C in FIG. Since the driven wheel 5 and the stator 6 all move in the same direction, it is also possible to actuate the washer bong/ by the movement of the driven wheel 5 and blow out the washer fluid along with some wiper operation.

However, the present invention is not limited to the embodiments described above and shown in the drawings; in particular, the present invention may be applied to devices other than switch devices for automobile wipers, such as switch devices for light control, etc. Also, it may be applied to other than automobiles or other than switch devices,
Therefore, the number of switching stages may be less than the above-mentioned four stages, or may be more than b, etc., and may be changed as appropriate without departing from the gist of the present invention.

[In short, the present invention is designed to be rotatable in both forward and reverse directions.
A driven wheel has a plurality of teeth for forward rotation and reverse rotation, respectively, and is coaxial with this driven wheel and is provided so as to be rotated in both forward and reverse directions, and when the forward rotation operation is performed, the front and second driven wheels are rotated. An aid having a first pawl that engages with teeth for forward rotation to rotate the driven wheel in the forward direction, and a second pawl that engages with teeth for reversal of the driven wheel to reverse the driven wheel during a reverse operation. a moderation providing means provided to provide moderation in synchronization with one of the teeth for forward rotation and reverse rotation, respectively, for forward rotation and reverse rotation of the driven vehicle, and said assistance for forward rotation and reverse rotation of said assist vehicle The vehicle is equipped with return biasing means provided to return the vehicle to its respective neutral position, and is useful in that it can provide reliable stepping motion in rotation, especially rotation in both forward and reverse directions. It is possible to provide a sidewalk mechanism.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is an overall cross-sectional view, Fig. 2 is an exploded perspective view of main parts, and Fig. 3 is a sectional view taken along the line ■-■ of Fig. 1. , and FIGS. 4 to 6 are cross-sectional views of the portions corresponding to FIG. 3 during or after operation, respectively. In the figure, 4 is a support vehicle, 5 is a passive vehicle, 6 is a stator, 138~
13d is a tooth for forward rotation, 148-14d is a tooth for reverse rotation, 1
5 is a first claw, 16 is a second claw, 27 is a torsion spring, 29
is a knob. Applicant Tokai Rika Denki Seisakusho Co., Ltd. Figure 1 Figure 3 Figure 22 Figure 5 Figure 6

Claims (1)

[Claims] 1. A driven wheel that is rotatable in both forward and reverse directions and has a plurality of teeth for forward rotation and reverse rotation, respectively; During the forward rotation operation, the first pawl engages with the first claw in the driven wheel to rotate the driven wheel in the forward direction, and during the reverse operation, the first claw engages with the reversing teeth of the driven wheel. A second pawl to reverse the driven wheel is used as an assist vehicle, and the forward rotation and reverse rotation of the driven wheel are synchronized with one tooth each for forward rotation and reverse rotation.
11) The knot marks (・J !
In order to return to the position, the stepping mechanism is equipped with a return biasing means and a stepping mechanism.