JPS59111213A - Rotary operation type electric part - 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 rotary operation type electric component including a rotary operation shaft such as a rotary switch inch, a volume control, a variable condenser, etc.

In this type of rotary operation type electrical parts, the operation knob can be rotated to rotate the rotary operation shaft to reach the operation shaft for one revolution.(When the IJ contact or movable electrode is rotated, It is possible to perform switching, increase/decrease the resistance value, or increase/decrease the capacitor capacity.

However, in this rotary operation type electrical component, frictional resistance is used to fix the rotary operation shaft to the case at an arbitrary angular position, and when the rotary operation shaft is returned to its original state,
Since this must be done manually, there is a problem in that the operability is low when it is necessary to urgently return the rotary operating shaft to its original state. Therefore, it is desirable to improve this operability.

Therefore, the present invention provides a rotary operation shaft held in a case, a locking means interposed between the case and the rotary operation shaft, and capable of locking the rotary operation shaft to the case at an arbitrary angular position; A release means that is connected to the locking means and causes the locking means to release the lock, and a case of the rotation operation shaft by the locking means, which is interposed between the rotary operation shaft and the case and operates the release means. a return spring that returns the rotational operation shaft to its original state when the rotational operation shaft is released from the case, and a sub-release means that releases the rotational operation shaft from the case by the locking means at a predetermined angular position of the rotational operation shaft; By using a rotary operation electric component with a locking means, the rotary operation shaft can be quickly returned to its original state with a single touch, and when the rotary operation shaft is operated beyond a predetermined angle, it will automatically rotate. This is characterized in that the operating shaft can be returned to its original state, thereby greatly increasing the operability of the rotary operating shaft.

Next, the present invention will be explained based on the drawings.

1 to 3 are diagrams showing one embodiment of the present invention.

FIG. 1 shows a rotary switch to which this invention is applied. In FIG. 1, ■ indicates frame 1. It is.

This frame 1 has opposing pieces 2, 2 as shown in FIG.
', and a connecting portion 3 that connects the facing pieces 2, 2' in a substantially U-shape. And each opposing piece 2, 2'
A sulin I-4, 4' opening at the tip is formed in the first
, is there. 4, 4' to this sulin 1 are each opposing piece 2, 2'
Two pieces 2a.

It is divided into 2a or 2a', 2a', and 2a for each month.
r 2az2a', 2a' has a narrow tip 2b,
2b, 2b'+2b' are provided, respectively.

In FIG. 2, 5 is a first case, 5a, 5a' are protrusions provided on both sides of the first case 5, 6 is a rotating electrical circuit component, and 6a, 6a' are rotating electrical circuit components 6. Protrusions provided on both sides, 7 is the second case, 7a, 7
a' is a protrusion provided on the side of the second case 7;

By sequentially fitting these protrusions 5a, 6a, and 7a into the slit 4, and sequentially fitting the protrusions 5a', 16a', and 17a' into the slit 1-4', the case 5, the rotating electric circuit component 6, and the case 7 are assembled. They are sequentially attached to the frame 1. And pieces 2a, 2a, 2a',
Tip of 2a' 2b, 2b, 2b', 2b'
several holes 8a in the plate 8.

8a, 8a', IIL>', then the tip portion 2b12b.

21]", by bending the tip of 2b' sideways, the case 5, rotating electric circuit parts 6,
Case 7 is prevented from being removed from the frame.

In the figure, 9 is a cylindrical bearing that passes through the continuous portion 3 of the frame 1. A rotary operation shaft 1o is rotatably held in this bearing 9. This rotary operation shaft 1o is connected to the hole 5 of the case 5.
b, hole 6b of rotating electric circuit component 6, hole 7b of case 7,
The case 5 passes through the hole 8b of the mounting plate 8. A rotary piece 11 is housed in the case 5, which is fitted to the rotary operation shaft 1o so as not to be relatively rotatable. The rotating piece 11 includes a cylindrical portion 1.1a, a substantially semi-cylindrical portion 1.1 located at intervals on the outer circumferential side of the cylindrical portion 1.1a, and b.

A return spring 12 is loosely fitted on the outer periphery of this cylindrical portion 11a to return the rotary operation shaft 10 to its original state. Both ends 12a of this return spring 12.

128' are inscribed in side surfaces 5d and 5d' of a recess 5C formed in the case 5, respectively, as shown in FIG.

The movable contact mounting piece 13 of the rotating electric circuit component 6 is attached to the bush 1
4 to the rotary operation shaft 10.

By rotating this movable contact mounting piece 13, the movable contact 15°15' attached to the movable contact mounting piece 13 can be rotated.
The contact position between the fixed contact 17.17' on the main body 16.16' side can be switched. In the figure, 18
, 18' are terminals connected to the plurality of fixed contacts 17 or 17', respectively.

A locking means is interposed between the case 7 and the rotary operation shaft 10, which can lock the rotary operation shaft 10 to the case 7 at any angular position.

This locking means includes a cam plate 19 that is fitted onto the rotary operation shaft 10 so as to be relatively non-rotatable. Cam teeth 20 are arranged in a crown shape on the peripheral edge of one side of the cam plate 19, and two projecting pieces 21 are provided near the center of the cam plate 19, extending in the circumferential direction along the rotational operation shaft 10. , are cylindrically protruding at equal pitches in the circumferential direction. A locking protrusion 21a extending in the radial direction is provided at the tip of each protruding piece 21. Further, a pair of convex portions 1.9 (1119a) are provided on the outer circumferential surface of the cam plate 19 at opposing positions centered on the center of the cam plate 19.

Further, the locking means includes an annular temporary spring 22 and a clutch plate 23 that are loosely fitted around the outer periphery of the cylindrical row of the plurality of protrusions 21. A protrusion 22a is provided on the surface of the temporary spring 22 on the cam plate 19 side.

A protrusion 22a is provided on one side of the clutch plate 23, and the protrusion 22a engages between each cam tooth 20, 20 of the cam plate 9.
.

23a is provided in a protruding manner, and these protrusions 23a, 23a are fitted into the holes 22 of the leaf spring 22 and 22b. As a result, the temporary spring 22 and the clutch plate 23 are coupled so that they cannot rotate relative to each other. A plurality of clutch teeth 23I) are arranged in a crown shape in the circumferential direction on the peripheral edge of the other surface of the clutch plate 23.

Further, the locking means includes the clutch member 24 and the spring 2.
It is equipped with 5. The clutch member 24 is formed in a substantially U-shape, and the tip of the rotary operating shaft 10 is slidably fitted into the center hole 24a of the clutch member 24. Further, the opposing pieces 24b, 24b of the clutch member 24 are
It is inserted into the case 7 from the spaces A, A between the notches 8c, 8c at the upper and lower ends of the holding plate 8 and the upper and lower surfaces of the case 7, so as to be slidable in the case 7 but not rotatable in the circumferential direction. Further, protrusions 24c, 24c provided at the inner center portions at the ends of the opposing pieces 241), 24b are engaged with the clutch teeth 23)). , and a convex portion 24 provided on the outside at its tip.
d, 24d are a pair of convex portions 19a, +9 of the cam plate 19
is engaged with a. . The spring 25 biases the clutch member 24 toward the temporary clutch 23 side.

Moreover, several release means, that is, a solenoid 1 and a plunger device 26, are provided on the opposing pieces 8d, 8d of the mounting plate 8 to release the locking of the rotary operation shaft 10 from the case 7 by the locking means. There is. This solenoid plunger device 26
When the solenoid 28 in the main body 27 is energized, the plunger 29 is retracted.

The tip of the plunger 29 is inserted into the center hole 24a of the clutch member 24 and fixed to the clutch member 24 with a pin 30. The connected spring 25 is loosely inserted into the plunger 29 and is interposed between the main body 27 and the clutch portion t24.

The sub-release means for releasing the locking of the rotational operation shaft 10 from the case 7 by the locking means at a predetermined angular position of the rotational operation shaft 10 is the convex portion 19 provided on the cam 'Fi19 described above.
a, ], 9a and the clutch piece 24, and the protrusion +
9d + ] Convex portion 21 that engages with 9a! d, 24
It is composed of d.

Next, the operation of the rotary switch having such a configuration will be explained.

First, the return operation of the rotary operation shaft 10 by the release means will be described.
The spring force of 5 causes the protrusion 24c+2 of the clutch member 2+ to
4c meshes with the clutch teeth 23b of the clutch plate 23. Moreover, the spring force of the spring 25 also acts between the protrusion 22a of the temporary spring 22 and the cam teeth 20 of the cam plate 19.

Normally, in this state, the rotary operating shaft 10 is rotated by turning an operating knob (not shown). This rotary operation shaft 1
When 0 is rotated, the rotating piece 11 and the movable contact mounting piece 13
and force l, the plate and cam plate 19 rotate together.

When this rotating piece [1] is rotated, the end of the semi-cylindrical portion 11b becomes the end of the return spring 12]2a or 12.
8' to one side 5d or 5d' of the recess 5C.
Wind the return spring] 2 in the direction that increases the difficulty.

As a result, the return spring 12
to restore (i'i!) to its original state.

Meanwhile, at the same time, the cam plate] 9 also rotates. At this time, the cam teeth 20 of the cam plate 19 are connected to the protrusions 22a of the temporary springs 22.

22a against the spring force of the four springs 22 and the spring 25. Then, as the rotation operation of the rotation operation shaft O is completed, the protrusions 22a+22a engage between the cam teeth 20 and 20, respectively. This engagement is performed by the spring force of the plate spring 22 and the spring 25,
Since the rotary operation shaft 10 is attached to the case 7 side, even if the return force of the return spring 12 acts on the rotary operation shaft 10 like a slave, the rotary operation shaft 10 can be attached to the case at any angular position. It remains locked on the 7 side.

Further, when the movable contact pieces 13 rotate with the rotation of the rotary operating shaft 10, the contact positions between the movable contact 15.15' and the plurality of fixed contacts 1.7.17' are switched.

Also, the solenoid 28 of the solenoid plunger device 26
When energized, the plunger 29 pulls into the main body 27 against the spring force of the spring 25. As a result, the clutch portion 24 is displaced in the direction away from the clutch plate 23, and the spring force of the spring 25 acting between the protrusion 22a of the temporary spring 22 and the cam tooth 20 is removed. be done. As a result, the rotation operation shaft 10 is released from being locked to the case 7 side, and the rotation operation shaft 10 is quickly returned to its original state by the spring force of the return spring 12.

First, the return operation of the rotary operation shaft 10 by the sub release means will be described.

When the rotary operation shaft 10 is rotated beyond a predetermined angle, the cam plate 1
9 also rotates, and a pair of protrusions 19a, 19a provided on the outer peripheral surface of the cam plate 19 engage the opposing piece 24 of the clutch member 24).
+, convex portions 24d, 2 provided on the outside at the tips of 24b;
4d, and the clutch member 24 is displaced in the direction away from the clutch plate 23. Therefore, temporary spring 2
The spring force of the spring 25 acting between the protrusion 22a of No. 2 and the cam tooth 20 is removed. As a result, the lock on the case side l of the rotary operation shaft 10 is released, and the rotary operation shaft 10 is returned to its original state by the spring force of the return 12.

In this embodiment, a pair of convex portions 19a are provided on the outer peripheral surface of the cam plate 19.
, 19a are provided at opposing positions centering on the center of the cam plate 19, that is, at angular intervals of 180 degrees. The clutch member 24, which is provided with protrusions 24a, 24a that engage with the pair of protrusions 19a, is configured so that when the cam Fj, 19 rotates approximately 180 degrees, the protrusions 19a
, 19a are convex portions 24a, 24 of the clutch member 24
Since it is set to engage with the rotary operation shaft 1
When 0 is rotated 12 times over 180 degrees, the rotary operation shaft 10 is returned to its original position.

Therefore, the protrusion 19a is formed on the outer peripheral surface of the cam plate 19.
By providing a plurality of them at appropriate angular intervals around the center of the rotary operation shaft 10, when the rotary operation shaft 10 is rotated beyond a preselected certain angle, the rotary operation shaft 10
Of course, it can be automatically restored.

As explained below, the present invention includes a rotary operation shaft held in a case, and a rotary operation shaft interposed between the case and the rotary operation shaft to engage the rotary operation shaft at an arbitrary angular position on the case side. a locking means that can be locked, and a release means that is linked to the locking means and releases the locking of the rotation operation shaft by the locking means;
Interposed between the rotational operation shaft and the case, the rotational operation shaft is returned to its original state when the release means is operated to release the rotational operation shaft from the case 142 by the blocking means. a return spring, and the locking means is equipped with a sub-release means for releasing the locking of the rotation shaft from the case by the locking means at a predetermined angular position of the rotation operation shaft; By doing this, the rotary operation shaft can be quickly returned to its original state with a single touch, and when the rotary operation shaft is rotated beyond a predetermined angle, the rotary operation shaft can be automatically returned to its original state. As a result, the operability of the rotary operation shaft can be greatly improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a rotary switch showing an embodiment of the present invention, Fig. 2 is an exploded perspective view of the rotary switch of Fig. 1, and Fig. 3 shows the relationship between the case and return spring of Fig. 1. FIG. 5... First case, 6... Rotating electric circuit component, 7゛... Second case, 8... Mounting plate, 10... Rotating operation shaft, 11... Rotating piece, 12 ...Return spring, 13...Movable contact plate, 15.15'...Movable contact, 17.17'...Fixed contact, 2G...Solenoid plunger Applicant Alps Electric Co., Ltd. Procedural Amendment (Spontaneous) ) January 21, 1980, Director General of the Japan Patent Office, 111. Display of the case 1982 Patent Application No. 218465 Title of the invention Rotary operated electrical component °7°"": 222 ,□,,,8.9 Address 1-7 Yukitani Otsuka-cho, Ota-ku, Tokyo Name (A
O9) Alps Electric Co., Ltd. (1 person) 4, Agent
, 103 Phone: 669-4421 Address: 1-13-12 Kakigara-cho, Nihonbashi, Chuo-ku, Tokyo
9”. (2) Amend the drawing as shown in the attached sheet.

Claims (1)

[Scope of Claims] A rotary operation shaft held in a case; and a locking means interposed between the case and the rotary operation shaft and capable of locking the rotary operation shaft to the case at any angular position. and a release means that is connected to the locking means to release the locking of the rotary operation shaft by the locking means, and a release means that is interposed between the rotary operation shaft and the case and operates the release means. a return spring that returns the rotational operation shaft to its original state when the rotational operation shaft is released from the case by the locking means; 1. A rotationally operated electric component, characterized in that said locking means is provided with a sub-release means for releasing the locking from said case.