JPH0211776B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an increment feeding device driven by a drive lever that can be changed in two opposite directions from a neutral position, and the increment feeding is controlled in accordance with the direction of change of this lever. The feature is that the direction and the amount of increment feed are determined by the number of changes of this lever.

Mechanistic notching feed devices of this type have been widely known as rotary switches and other mechanical interlocking devices used in automobiles, toys, and the like.

FIGS. 1 to 3 show a conventional example of a tick feed device used as a rotary switch for an automobile, such as a wiper switch.

In this conventional example, by pushing down the lever 1, the feed pawl base 2, to which the lever 1 is eccentrically connected, rotates clockwise in the figure about the support shaft 3. As a result, the feed pawl 4 fixed to the feed pawl base 2 engages with the ratchet convex tooth 5 and pushes the convex tooth 5 around. The ratchet convex teeth 5 are provided on a rotary base 7 that is rotatably attached to a support shaft 6.
is rotated counterclockwise in the figure by being pushed around as described above. FIG. 3a shows the operating process when the rotary base 7 is rotated.

Since the lever 1 is configured to automatically return to its original position by releasing the pressing force and rise to the neutral position shown in FIG. 1st from rotational state
Return to figure state. At this time of return, the feed pawl 4 overcomes one ratchet convex tooth 5 against its own spring force, so the rotary base 7 returns and receives rotational force. The mating detent spring 9 absorbs the return rotational force and holds the rotary base 7 in the rotational position. FIG. 3b shows the operating process at this time. By repeating the above operations, the rotary base 7 is fed counterclockwise in the figure in increments according to the first, second, and third ratchet convex teeth 5.

On the other hand, as can be seen from FIG. 2, a concave and convex cam portion 10 is formed on the back surface of the rotary base 7, and a pin 12 that interlocks an electrical contact 11 is fitted into this cam portion 10. In addition, cam part 1
Regarding the interlocking mechanism consisting of 0, electrical contact 11, and pin 12, only one is shown in the drawing.
A plurality of these interlocking mechanisms are arranged. As the rotary base 7 rotates, the pin 12 moves vertically in FIG. 2 to open and close the electrical contact 11.

This conventional example, which operates as described above, is restored to the initial state shown in FIG. 1 by pulling up the lever 1. Now, the wiper switch increment feeding device shown as a conventional example has a flat device shape, which is advantageous when attached to the front panel of a car, etc. However, it has the following drawbacks. .

(1) Since it has a two-shaft (support shafts 3 and 6) structure, a predetermined distance between the shafts is required, and the device form is not necessarily miniaturized.

(2) Since the feed pawl 4 is an elastic plate with a small width, the controlled objects that are interlocked with the rotary base 7 are limited to those that are operated by a small control force, such as a switch contact piece.

(3) Since the rotary base 7 has a structure in which it rotates in one direction and then rotates back, it is not suitable for controlled objects that require control force in the forward or reverse direction from the beginning.

(4) Since the rotation range of the rotary base 7 is determined by the ratchet convex teeth 5, it cannot be used, for example, for controlled objects that require one rotation of control force, and the range of application is limited. Limited.

In view of the above-mentioned drawbacks, the present invention
The main feature is that the direction of increment feed is determined according to the direction of change of the drive lever, and the amount of increment feed is determined by the number of changes of this lever.
Furthermore, it is an object of the present invention to develop a notch feeding device that has a simplified configuration by reducing the number of parts as much as possible.

Therefore, in this invention, a rotating body having continuous inward teeth, a support shaft provided on a fixed base for rotatably supporting this rotating body on a fixed base, and a rotating body that is moved from a neutral position to two opposite directions. The interlocking member is rotatably attached to the support shaft, and the engaging pawls formed at both ends are movable in the direction of the inward teeth of the rotating body, and is connected to the rotating portion of the interlocking member, and applies a reciprocal force to the interlocking member to automatically return the drive lever, and also attaches both end portions to the engagement claws of the feed claw, respectively. engage,
one spring provided inside the internal teeth of the rotary body so as to bias the engaging pawl in the direction of the internal teeth; and one spring provided on the inside of the internal teeth of the rotary body, and one of the feed pawl bodies located in front of the partial internal teeth of the rotary body. A guide wall provided on the fixed base so that while one engaging claw is in pressure contact with the tooth surface of the inner tooth and is performing a feeding operation, the other engaging claw is moved away from the rotation area of the inner tooth of the rotating body. , comprising a moderation mechanism configured between the rotary body and a fixed base body, which regulates the position of the rotary body each time the rotary body is rotated by the feed pawl body;
The present invention proposes an increment feeding device in which the rotating body is incrementally fed in the forward direction or in the reverse direction by a feed pawl body that responds to changes in the position of a drive lever.

An example in which the present invention is implemented as a rotary switch will be described below. However, the present invention is not limited to this embodiment, and can be appropriately implemented as, for example, a mechanical interlocking mechanism or a notching feed device for toys and the like.

In the drawings, FIG. 4 is a vertical cross-sectional side view of a rotary switch equipped with the increment feeding device according to the present invention, and FIG.
- It is a sectional view cut along the A line.

In these figures, reference numeral 13 denotes a container-like switch case serving as a fixed base, and a rotating body 15 rotatably attached to a support shaft 14 is housed inside the case 13. The rotating body 15 is a circular member similar to an internal gear having internal teeth 15a, and a hole 15b for a spring 17 to press the conductive plate 16 is provided at the center of the back surface thereof, as shown in FIG. Further, a supporting piece 16 of the conductive plate 16 is provided on the circumferential part.
A groove 15c into which a is inserted is provided. In addition,
The small protrusion 16b formed on the plane of the conductive plate 16 moves on the surface of the terminal base 18 fixed to the switch case 13 and comes into contact with the electrical terminal 18a fixed to the base 18.

On the other hand, as detailed in FIG. 7, the interlocking member 19 rotatably attached to the support shaft 14 has a drive lever 20 fixed to its bearing portion 19a, and
An interlocking pin 21 is fixed to the pivoting end so as to face the bottom surface of the switch case 13. The drive lever 20 is made to protrude outward from the case 13 through an elongated guide hole provided in the switch case 13 in a range l.

The above-mentioned interlocking pin 21 is connected to a feed claw body 22. That is, the feed pawl body 22 is an elongated rectangular member, and a support groove 22c into which the interlocking pin 21 is fitted is formed in the center thereof. Further, this feeding claw body 22 has engaging claws 22a, 2 formed at both ends thereof.
2b and receiving protrusions 22d and 22e for the spring 23 protruding from both end portions, respectively.

Guide wall 24 with which the above-mentioned feed claw body 22 is in pressure contact
is provided on the bottom surface of the switch case 13 so as to be located in front of the partial inward teeth 15a. It should be noted that when the rotating body 15 is stationary, both ends of the guide wall 24 are configured to coincide with the tips of the inward teeth 15a. The position of the rotating body 15 is regulated by a moderation mechanism consisting of a plate spring 25. The plate spring 25 has a convex portion 25a that fits between two inward teeth, and its folded end 25b is fixed to the bottom surface of the switch case 13.

The above-mentioned spring 23, which is wound around the bearing part 19a of the interlocking member 19, has its drawn-out part crossed between the bearing part 19a and the interlocking pin 21, and its ends are attached to the projections 22d, 2 provided on the feed claw body 22.
It is locked to 2e. From this, the feed claw body 22
The engaging claws 22a and 22b at both ends of the holder are pressed by the spring 23 toward the inward tooth 15a. Further, a protrusion 2 disposed near the bearing portion 19a so as to sandwich the drawn-out portion of the spring 23.
6a and 26b are protrusions for regulating the spring 23 fixed to the bottom surface of the switch case 13. These protrusions 26a, 26b are arranged so that the drive lever 20
When the spring 23 is tilted upward or downward from the neutral position shown in the figure, one of the drawn-out portions of the spring 23 is pressed down, and the return urging force of the spring 23 is applied to the interlocking pin 21.

The operation of the rotary switch will be explained below.

When this switch is in the normal state, the drive lever 20 is in the neutral position shown in FIG. Introverted teeth 15
It is further away than a.

When the tip of the drive lever 20 is pushed down in this state, the interlocking member 19 pivots clockwise in FIG. pin 2
The feed claw body 22 connected by 1 moves to the left in the figure. The engaging pawl 22a of the feed pawl body 22 is pressed toward the inward tooth 15a by the spring 23, and engages with the inward tooth 15a as soon as the feed pawl body 22 starts moving leftward. Therefore,
Due to the above movement of the feed claw body 22, the inward teeth 15a
is pushed around by a predetermined distance, so the rotating body 15
rotates clockwise in FIG. Further, the convex portion 25a of the plate spring 25 fits between the inward teeth newly moved by the rotation of the rotating body 15. 8th
The figure shows the operating stages at this time. As can be seen from this figure, while one engaging claw 22a is in the feeding operation, the other engaging claw 22b rides on the inner surface of the guide wall 24 and retreats from the rotation area of the inward teeth 15a. .

In the above operation stage, the interlocking pin 21 is receiving the return force from the spring 23, and the drive lever 2
By releasing the pressing force to 0, the lever 20 automatically returns to the neutral position, and the feed pawl 22 interlocked by the interlocking member 19 moves to the position shown in FIG.

During this return operation, the engagement pawl 22a overcomes one of the inward teeth 15a as it moves back, so that a slight return rotational force acts on the rotating body 15. However, since the rotating body 15 is regulated in position by the plate spring 25, the rotated position is maintained.

Further, when the drive lever 20 is repeatedly pushed down, the above-mentioned feeding operation is repeated and the rotating body 15 is moved to the fifth position.
It is continuously fed clockwise in the diagram.

As the rotating body 15 rotates as described above, the conductive plate 16 similarly rotates on the terminal base 18, so that a large number of electrical terminals 18a appropriately arranged on the base 18 are connected to the notches of the rotating body 15. It can be switched according to the feed.

Next, when the drive lever 20 is pushed up from the neutral position shown in FIG. 5, the feed claw body 22 moves to the right in the figure, causing the rotating body 15 to rotate counterclockwise in the figure. move. FIG. 9 shows the operation steps at this time, and as can be seen from this figure, the feeding operation in this case is the same as described above, so a description thereof will be omitted.

As can be understood from the above explanation, the drive lever 2
Direction of change of 0 (upward or downward in Figure 5)
The direction of rotation of the rotating body 15 is determined by this, and the amount of rotation of the rotating body 15 is determined by the number of changes of the lever 20. Note that the present invention is not limited to the above-mentioned embodiments, and can be implemented as described below.

(a) The position of the drive lever 20 can be changed by manual or mechanical operation.

(b) The inward facing teeth 15a of the rotating body 15 may have missing teeth in a partial region thereof.

(c) The interlocking member 19 and the feed claw body 22 can be constructed integrally. In this case, the feed claw body 22
The engaging claws 22 at both ends are made elastic.
a, 22b are configured to have a biasing force to move in the direction of the inward teeth.

(d) Instead of the plate spring 25 constituting the moderation mechanism, a click stop mechanism using steel balls may be used. The click stop mechanism can be constructed between the rotating body 15 and the switch case 13. Moreover, this moderation mechanism may be constructed by other well-known means.

(E) When the drive lever 20 moves back and forth once,
In addition to being configured to feed out the inward teeth 15a one pitch, it is also possible to send out two or more pitches in a limited range in one reciprocating change. In this case, the tilting angle of the drive lever 20 that tilts around the support shaft 14, the distance between the support shaft 14 and the interlocking pin 21, etc. are determined as appropriate.

(F) A window hole 27 is provided in a part of the switch case 13, and an appropriate display is placed on the surface of the rotating body 15 that passes through the inner part of the window hole 27, such as an inward tooth 15.
ON, OFF and drive lever 2 according to the pitch of a
By providing a display of the number of changes to 0, etc., the operating status of the device can be visually checked, which is convenient.

Although FIG. 10 is a partial surface view of the switch case 13 showing the window hole 27, the window hole 27 is not limited to the illustrated position, but can be provided at any suitable location that is easily visible. The shape of can be determined arbitrarily.

As described above, in the increment feeding device according to the present invention, the direction of increment feed is determined according to the direction of change of the drive lever, and the amount of increment feed is determined according to the number of changes of this lever. Alternatively, it becomes possible to perform increments in the opposite direction, and a predetermined amount of increments can be obtained by arbitrarily setting the number of times the drive lever changes. Further, the present invention has a uniaxial configuration, and is configured to apply a return force for the drive lever and a force for moving the engaging pawl of the feed pawl body by one spring provided inside the internal teeth of the rotating body. The structure is simple with a small number of parts, the device form is small, and the feed claw body can be made of square material, etc., so the cutting feed force of the rotating body is large and relatively large. It can be easily implemented even for controlled objects that require control force.

[Brief explanation of drawings]

Figures 1 to 3 show a conventional wiper switch for automobiles in which an increment feeding device is used, with Figure 1 being a longitudinal sectional front view of the switch, Figure 2 being a cross-sectional side view of the switch, and Figure 3 a and b are longitudinal sectional front views similar to FIG. 1 showing the operation process of the switch;
FIG. 4 is a longitudinal sectional side view of a rotary switch implementing the notch feeding device according to the present invention, FIG. 5 is a sectional view of the rotary switch taken along line A-A in FIG. 4, and FIG. FIG. 7 is an enlarged partial perspective view showing the main parts of the present invention; FIGS. 8 and 9 are sectional views similar to FIG. 5 showing the operating process of the rotary switch. , FIG. 10 is a partial surface view of the switch case showing the window hole. 13...Switch case, 14...Spindle, 15
... Rotating body, 15a ... Inward tooth, 16 ... Conductive plate, 18 ... Terminal base, 19 ... Interlocking member, 19a ... Bearing part, 20 ... Drive lever,
21... Interlocking pin, 22... Feed claw body, 22a,
22b...Engaging claw, 22c...Support groove, 23...
Spring, 24...Guide wall, 25...Plate spring.

Claims (1)

[Claims] 1. A rotary body having continuous inward teeth, a support shaft provided on a fixed base for rotatably supporting the rotary body on a fixed base, and a rotating body that is moved from a neutral position to two opposite directions. The interlocking member is integral with the drive lever that can be rotated, and the interlocking member is rotatably attached to the support shaft, and the engaging pawls formed at both ends are movable in the direction of the internal teeth of the rotating body. In order to automatically return the drive lever to the feed pawl body connected to the rotating portion of the interlocking member, the mechanism applies a reciprocating force to the interlocking member, and also connects both end portions to the engaging pawl portions of the feed pawl body. one spring provided inside the internal tooth of the rotating body so as to engage with the engaging pawl and bias the engaging pawl in the direction of the internal tooth; The claw body is attached to the fixed base so that, while one of the engaging claws is in pressure contact with the tooth surface of the internally facing tooth and is performing a feeding operation, the other engaging claw is moved away from the rotation area of the internally facing tooth of the rotating body. The guide wall installed,
It consists of a moderation mechanism constructed between the rotary body and a fixed base that regulates the position each time the rotary body is rotated by the feed pawl body, and the moderation mechanism is configured between the rotary body and a fixed base body, and the feed pawl body responds to changes in the position of the drive lever. A tick feed device configured to tick feed the rotary body in forward or reverse directions. 2. The device according to claim 1, in which the inward teeth of the rotating body are provided over the entire inner circumference or in a partial area of the inner circumference. 3. In the device set forth in claim 1, the interlocking member integral with the drive lever and the feed pawl body are configured separately, and the feed pawl body is rotatably connected to the interlocking pin protruding from the interlocking member. A notching feed device in which the engaging claws at both ends of the feed claw body are pressed toward the inward teeth of the rotating body by a spring force. 4. In the device set forth in claim 1, the interlocking member and the feed pawl body are constructed integrally, and the engaging pawls at both ends of the feed pawl body have a biasing force to move in the direction of the inward teeth of the rotating body. A notching feed device whose feed claw body itself is made of elastic material. 5. In the device set forth in claim 1, the moderation mechanism is an elastic member provided on the fixed base that constantly applies an advancing force between two specific internal teeth of the rotating body, or between the rotating body and the fixed base. A notch feeding device consisting of a click stop mechanism that uses a steel ball constructed between.