JP3539019B2 - Rotating electronic components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a combination of a rotary operation type component for volume adjustment, frequency adjustment or timer adjustment and a push switch for circuit switching in audio equipment, video equipment, etc. The present invention relates to a rotary operation type electronic component that performs a moving operation.

[0002]

2. Description of the Related Art In recent years, with the miniaturization and high performance of electronic equipment, small and high-precision electronic parts have been demanded.

[0003] A conventional technique of this kind of electronic component will be described with reference to FIGS. 9 to 12 by taking a small rotary encoder with a push switch as an example.

In FIG. 9, reference numeral 1 denotes an operating shaft made of a metal rod, which is inserted into a circular hole 2A of a bearing 2 from an upper end, and has an intermediate circular portion 1A fitted and held so as to be capable of rotational movement and vertical movement. Have been.

[0005] On the other hand, reference numeral 3 denotes a rotating body made of molding resin, which comprises a disk portion 3A having a planar contact 4 on the lower surface and a cylindrical portion 3B which stands upright at the center thereof. 2A is inserted from the lower end, and the outer diameter thereof is fitted and held so as to be able to rotate.

The non-circular small-diameter portion 1B below the operation shaft 1 is fitted into the non-circular through-hole 3C of the cylindrical portion 3B so that the rotational motion is transmitted but the vertical motion is not transmitted. A C-shaped washer 5 shown in FIG. 10 is inserted from a tapered portion of a lower end portion 1C into a groove portion 1D of the operation shaft 1 protruding below the plate portion 3A, and serves as a retaining portion.

On the lower surface of the disk portion 3A of the rotating body 3,
As shown in FIG. 11, a flat contact 4 comprising a center circle portion 4A and a plurality of linear portions 4B radially extended from the center contact portion 4A is provided by insert molding, and a lower fixed substrate opposed to the lower fixed substrate at a predetermined interval. Three elastic legs 7A extended from 6
And elastic contact points 8A and 8B, 8C of 7B, 7C
Are the central circle portion 4A and the linear portion 4 of the planar contact 4 respectively.
A rotary contact mechanism section (encoder section) is constituted by elastic contact with B, and the positions of the elastic contacts 8B and 8C are set so as to be slightly shifted in the rotation direction.

Further, a switch board 9 is disposed below the fixed board 6, and on the upper surface thereof, a center fixed contact 10A concentric with the operation shaft 1 and an outer fixed contact 10B at an outer peripheral position.
Are fixed by insert molding, and an outer peripheral lower surface of a dome-shaped movable contact 11 made of an elastic metal plate is placed on the outer peripheral fixed contact 10B to constitute a push-on switch portion. The lower end 1 </ b> C of the operation shaft 1 is in contact with the upper portion via a push plate 12.

Then, the bearing 2, the fixed board 6 and the switch board 9 are overlapped and sandwiched from above the bearing 2 with the legs of the U-shaped mounting bracket 13, and the leg tip 13A is attached to the back surface of the switch board 9. The whole is connected and fixed by bending.

Next, the operation of the rotary encoder with a push switch will be described. First, by rotating the upper end 1E of the operating shaft 1, the rotating body 3 is rotated with the rotating motion of the operating shaft 1. The three resilient contacts 8A, 8B, and 8C slide on the center circle portion 4A and the linear portion 4B with respect to the planar contact 4 on the lower surface, and the terminals 14A, 14B, and 14C connected to the respective contacts.
And outputs a pulse signal between 14A and 14B and between 14A and 14C to function as an encoder.

At this time, a displacement occurs in the pulse signals generated between the terminals 14A and 14B and between the terminals 14A and 14C due to the displacement of the contact positions of the elastic contacts 8B and 8C that contact the linear portion 4B of the flat contact 4, so that the displacement occurs. Detects the operation direction of the function (for example, volume adjustment) that performs rotation operation on the device used as a circuit,
Can be adjusted.

During this rotation operation, the operating shaft 1 does not move up and down, and the push switch does not operate.

Next, as shown by an arrow in FIG. 12, when the operating shaft 1 is moved downward by applying a pressing force to the upper end 1 E of the operating shaft 1, the lower end 1 C is moved via the push plate 12. The push switch is operated by pressing the dome-shaped movable contact 11.

At this time, since the rotating body 3 of the encoder unit does not move downward and of course does not rotate, the encoder unit does not operate.

In the conventional rotary encoder with a push switch, the cylindrical portion 3B of the rotating body 3 is fitted and held by the circular hole 2A of the bearing 2 because of the flat contact 4 for generating a pulse signal. This is to prevent the rotating body 3 that holds the tilt angle or the position from being misaligned during the rotation operation of the operation shaft 1 so as to improve the accuracy of the rotary encoder unit.

[0016]

However, in the above-mentioned conventional rotary operation type electronic component (rotary encoder with push switch), the operation shaft 1 is inserted by inserting the C-shaped washer 5 into the groove 1D below the operation shaft. This method requires the forming washer 5 and the operation of inserting the forming washer 5 is to insert the forming washer 5 into the small-diameter groove 1D in the concave portion on the lower surface of the rotating body 3. Therefore, there is a problem that it is very difficult, and furthermore, it is difficult to confirm the inserted state of the molding washer 5.

In the above-mentioned conventional rotary operation type electronic component (rotary encoder with push switch), the operation of the operation shaft 1 for driving the push switch unit is prevented in order to prevent the vertical movement of the operation shaft 1 from being transmitted to the rotating body 3. Non-circular small diameter portion 1B below shaft 1 and non-circular through-hole 3 in cylindrical portion 3B of rotating body 3
As shown in FIG. 11, the fitting portion C is fitted with a slight gap.

For this reason, when the operating shaft 1 is rotated to drive the rotary contact mechanism (encoder), the clearance between the fitting portions causes a play angle in the rotating direction of the operating shaft 1, and particularly, the rotating direction is changed. When turning over, there was a problem that the operator's hand felt rattle.

If the clearance between the fitting portion of the operating shaft 1 and the rotating body 3 is the same, the play angle becomes larger as the diameter of the fitting portion becomes smaller. In a configuration in which the cylindrical portion 3B of the rotating body 3 is inserted into the circular hole 2A of the bearing 2 like a rotary encoder, the non-circular through hole 3C of the cylindrical portion 3B is
Since it is considerably smaller than A, the play angle of the operating shaft 1 in the rotation direction is large.

The present invention is to solve such a conventional problem, and it is possible to easily assemble and form a retaining portion of an operation shaft, and to reduce a play angle in a rotation direction of the operation shaft during a rotation operation. An object is to provide a small rotary operation type electronic component.

[0021]

According to the present invention, in order to solve the above-mentioned problems, in a rotary operation type electronic component, a center end of a rotary body cylindrical portion inserted and fitted from a lower end into a circular hole of a bearing has a small diameter. The small diameter portion below the operating shaft inserted and fitted from the upper end of the circular hole of the bearing is passed through the formed through hole, and the elastic claw provided on the side surface of the small diameter portion of the operating shaft has a small diameter at the tip of the rotating body through hole. And a convex portion and a concave portion provided on the outer periphery of the tip of the cylindrical portion of the rotating body and the outer periphery of the fitting portion of the operating shaft and the outer periphery of the step portion of the small-diameter portion, respectively. The operating shaft rotates together with the rotating body but can move up and down independently by slidably engaging with the rotating shaft.

This makes it very easy to assemble and form the retaining portion of the operation shaft of the rotary operation type electronic component, and can reduce the play angle of the operation shaft in the rotation direction.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a disk portion and a cylindrical portion which stands upright at the center of the disk portion, and has a through hole having a small diameter at the center of the cylindrical portion. A rotating body that has a cylindrical portion inserted from the lower end of the circular hole of the bearing and rotatably fitted and held therein, and is inserted from the upper end of the circular hole of the bearing so as to be rotatable and vertically movable. It is held, and the small diameter part below it passes through the center hole of the rotating body and rotates together with the rotating body, but the elastic claw protruding from the side surface of the small diameter part contacts the small diameter part at the tip of the center hole of the rotating body. The operating shaft, which is restricted to move up and down within a certain range by the retaining portion configured, is disposed facing the disk portion of the rotating body at a predetermined interval, and cooperates with the disk portion. This is a rotary operation type electronic component consisting of a fixed board that emits a rotation signal. By inserting the operating shaft from the upper end side into the circular hole of the bearing holding and holding the elastic claw, the elastic claw provided on the small diameter portion below it contacts the small diameter portion of the through hole of the rotating body, This has the effect that the retaining portion of the operation shaft can be assembled and formed without using a molded washer or the like.

According to a second aspect of the present invention, in the first aspect of the present invention, the elastic claw of the small diameter portion of the operating shaft is attached to the small diameter portion of the rotary body center hole by utilizing the elasticity and the taper of the elastic claw support. Through which the operating shaft is inserted from the upper end side into the circular hole of the bearing in which the cylindrical portion of the rotating body is fitted and held at the lower end side, and lightly pushed in. Thereby, the retaining portion of the operation shaft can be easily assembled.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the outer circumference of the tip of the cylindrical portion of the rotating body which is fitted and held in the circular hole of the bearing and the fitting portion of the operating shaft and the small diameter. The operation shaft rotates together with the rotating body but moves up and down independently by engaging the protrusion and the recess provided on the outer periphery of the step portion of the portion slidably in the vertical direction. ,
The operating shaft rotates together with the rotating body but can move up and down independently, and even if a gap is provided in the engaging portion between the convex portion and the concave portion so that the vertical movement of the operating shaft is not transmitted to the rotating body, the convex portion Since the diameter of the portion provided with the concave portion and the concave portion is large, the play angle at the time of rotating the operation shaft can be reduced.

The invention described in claim 4 is the invention according to one <br/> claim 1, operating a push switch for opening and closing is pushed at its tip by vertical movement of the operating shaft It is arranged concentrically with the shaft, and has the effect that the push switch can be operated independently by pushing the operating shaft up and down. The departure according to claim 5
Akira is composed of a disk and a cylinder that stands upright at the center.
The outer diameter of the cylindrical part inserted from the lower end of the circular hole of the bearing
Of the bearing and the circular hole of the bearing
Fits rotatably and vertically movable inserted from the top
And the small diameter part below it has a through hole in the cylindrical part of the rotating body.
Penetrates and rotates around the rotating body, but is located on the side of the small diameter part.
Retaining portion constituted by an elastic claw abuttingly engaged with a rotating body
Operating axis regulated to move up and down within a certain range by
And are arranged facing the disk of the rotating body at a predetermined interval.
From a fixed substrate that emits a rotation signal in cooperation with the disk.
It is a rotary operation type electronic component that rotates to the lower end
Upper end side of the circular hole of the bearing in which the cylindrical part of the body is fitted and held
Insert the operating shaft from below, and rotate the elastic claw
By making contact with the rolling elements, it is possible to use molding washers, etc.
Assemble and form the retaining part of the operation shaft without using
It has the effect of being able to.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 7 using a small rotary encoder with a push switch as an example.

FIG. 1 is a front sectional view of a rotary encoder with a push switch according to the embodiment. In FIG. 1, reference numeral 21 denotes a rod-shaped operation shaft made of molded resin, which is inserted into a circular hole 22A of a bearing 22 from an upper end. The intermediate circular portion 21A is fitted and held so as to be able to rotate and move up and down as in the conventional example, but a non-circular small diameter portion below which the elastic claws 23 project from the side surface. 21B, and a lower lower end portion thereof is a circular small diameter portion 21C concentric with the intermediate circular portion 21A.

Here, the non-circular small diameter portion 21B of the operation shaft 21
2A is a side view of the operation shaft shown in FIG.
As shown in the bottom view of FIG.
A support 2 having a lower end fixed in D and a free upper end.
1E, the tip of which is expanded by a tapered portion 23A to form an elastic claw 23 projecting laterally from a side surface of the non-circular small-diameter portion 21B, and a step portion of the intermediate circular portion 21A and the non-circular small-diameter portion 21B. Two protrusions 24 are provided on the outer periphery of 21F so as to protrude downward.

Reference numeral 25 denotes a rotating body made of molding resin, which comprises a disk portion 25A having a planar contact 26 on the lower surface and a cylindrical portion 25B standing upright at the center thereof. The outer diameter is fitted and held so that it can be inserted into the lower end of the rotating body 22A so as to be capable of rotational movement, as in the conventional example, but the plan view and the figure of the rotating body shown in FIG. As shown in the front view of FIG.
In the center of 5B, the non-circular small-diameter portion 21 below the operation shaft 21
B and a small-diameter portion 25D at the lower end thereof have a through-hole 25C for passing the circular small-diameter portion 21C at the lower end.
Two concave portions 27 are provided in which the two convex portions 24 of F are slidably engaged in the vertical direction.

A method of inserting a non-circular small-diameter portion 21B below the operating shaft 21 and a circular small-diameter portion 21C at the lower end into the center through hole 25C of the cylindrical portion 25B of the rotating body 25 will be described first. Circular hole 2 of bearing 22
After the cylindrical portion 25B of the rotating body 25 is inserted and fitted from the lower end of the rotating body 25, the tip small diameter portion 25D of the rotating body 25 and the operating shaft 2
1. The direction of the non-circular small-diameter portion 21B is aligned, and the circular small-diameter portion 21C at the lower end of the operating shaft 21 and the lower non-circular small-diameter portion 21B are inserted straight from the upper end of the circular hole 22A of the bearing 22. Small diameter portion 25D at the tip of through hole 25C of rotating body 25
4 by lightly pressing the upper end operating portion 21G of the operating shaft 21 at a position where the tapered portion 23A below the elastic claw 23 of the non-circular small diameter portion 21B hits the linear portion 25E of the small diameter portion 25D. As shown in FIG. 5, after the support 21E below the elastic claw 23 is bent and the elastic claw 23 is pushed in the center direction, the support 21E passes through the small-diameter portion 25D of the through hole 25C.
The support portion 21E returns to the original state by the elastic restoring force,
As shown in FIG. 5, when the elastic claws 23 enter the lower surface of the small diameter portion 25D of the through hole 25C at predetermined intervals in the vertical direction, a retaining portion of the operation shaft 21 is formed, and the through hole of the rotating body 25 is formed. 25C, the non-circular small diameter portion 21 of the operation shaft 21
B is combined.

At this time, the two convex portions 24 of the step portion 21F of the operation shaft 21 are engaged with the two concave portions 27 on the outer periphery of the tip of the cylindrical portion 25B of the rotating body 25 so as to be slidable in the vertical direction.

As a result, the operating shaft 21 rotates together with the rotating body 25, but is engaged so as to be able to move up and down independently.

Here, the configuration in which the convex portion 24 of the operating shaft 21 and the concave portion 27 on the outer periphery of the tip of the cylindrical portion 25B of the rotating body 25 are engaged with the non-circular small-diameter portion of the operating shaft described in the prior art. Compared to the configuration in which the through hole of the rotating body cylindrical part is fitted,
If the gap size of the engagement portion is the same, the play angle of the operation shaft 21 in the rotation direction can be reduced by the increase in the diameter of the engagement portion.

Also, contrary to the above description, it is a matter of course that the operating shaft may be provided with a concave portion and the rotating body may be provided with a convex portion.

A predetermined distance is set between the center contact point 26A held on the lower surface of the rotating body 25 and the planar contact 26 consisting of a plurality of linear portions 26B (both not shown) extending radially from the center circle point 26A. The lower fixed substrate 28 facing away
The three elastic legs 29A, 29B, and 29C are extended from, and the elastic contacts resiliently contact the flat contact 26 to form a rotary contact mechanism (encoder) as in the conventional example.

Further, a switch board 30 is disposed below the fixed board 28, a center fixed contact 31A and an outer fixed contact 31B are fixed on the upper surface thereof by insert molding, and a dome-shaped movable contact 32 is mounted on the outer fixed contact 31B. To form a push switch portion, which is in contact with a circular small-diameter portion 21C at the lower end of the operation shaft 21 via a push plate 33, and the bearing 22, the fixed substrate 28, and the switch substrate 30 are overlapped to form a U-shaped mounting bracket. The connection and fixing at 34 are also the same as in the conventional example.

The operation of the rotary encoder with a push switch will now be described. When the operation shaft 21 is rotated, a pulse signal is supplied between terminals 35A and 35B and between terminals 35A and 35C of the encoder, which is a rotary contact mechanism. Is the same as in the conventional example, but the play in the rotation direction of the operation shaft 21 when the rotation direction of the operation shaft 21 is reversed, as shown in the sectional view of FIG.
The two convex portions 24 of the step portion 21F and the cylindrical portion 2 of the rotating body 25
It is regulated by the engaging portion of the two concave portions 27 on the outer periphery of the tip of 5B.

Also, as shown in FIG. 7, the dome-shaped movable contact 32 can be turned over by pushing the operating shaft 21 downward to move the dome-shaped movable contact 32 through the push plate 33 as in the conventional example. At this time, the rotating body 25 of the encoder unit does not move in the vertical direction or the rotating direction, and the push switch unit operates alone.

In the above description, as a method of inserting the non-circular small-diameter portion 21B of the operating shaft 21 into the center through-hole 25C of the cylindrical portion 25B of the rotating body 25, it is inserted from the lower end of the circular hole 22A of the bearing 22. Cylindrical part 25 of rotating body 25
The method of inserting and engaging the circular small diameter portion 21C and the non-circular small diameter portion 21B of the operation shaft 21 into the through hole 25C of B has been described. By assembling as a rotary encoder with a push switch in a state where it is not mounted, and finally pushing the operating shaft 21 straight from the upper end of the circular hole 22A of the bearing 22,
A method of inserting the non-circular small-diameter portion 21B into the central through hole 25C of the cylindrical portion 25B of the rotating body 25 and mounting the same is also possible.

Thus, the upper end operation unit 2 of the operation shaft 21
Even if the product has a different shape and size of 1G,
It is possible to assemble parts except for at once.

[0042]

Rotatively-operated electronic component of the present invention exhibits, by inserting the operating shaft the cylindrical portion of the rotating body with respect to the circular hole fitting retained bearing, the retaining portion of the operating shaft by pushing lightly It can be easily formed . In addition , since the operating shaft is engaged with the rotating body at a position where the diameter of a portion that engages with the rotating body but engages so that the operating shaft can move up and down independently is engaged at a large position, the play angle in the rotating direction of the operating shaft is reduced. be able to.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a rotary encoder with a push switch according to an embodiment of the present invention.

FIG. 2A is a side view of the operation shaft. (B) Bottom view

FIG. 3A is a plan view of the rotating body. (B) Front view

FIG. 4 is a front sectional view illustrating a method of combining the operating shaft and a rotating body.

FIG. 5 is a front sectional view illustrating a state after the operation shaft and the rotating body are combined.

FIG. 6 is a sectional view taken along line AA of FIG. 1;

FIG. 7 is a front sectional view of a state where the operation shaft is pressed.

FIG. 8 is a front sectional view illustrating a second method of combining the operating shaft and the rotating body.

FIG. 9 is a front sectional view of a conventional rotary encoder with a push switch.

FIG. 10 is a perspective view of the C-formed washer.

FIG. 11 is a sectional view taken along the line BB of FIG. 9;

FIG. 12 is a front sectional view showing a state where the operation shaft is pressed.

[Explanation of symbols]

21 Operation axis 21A middle circular part 21B Non-circular thin part 21C circular small diameter part 21D Through hole 21E prop 21F step 21G top operation unit 22 Bearing 22A circular hole 23 Elastic claws 23A taper part 24 convex 25 rotating body 25A disk 25B cylindrical part 25C Through hole 25D small diameter part 25E straight section 26 planar contacts 27 recess 26B linear part 27 recess 28 Fixed board 29A, 29B, 29C elastic legs 30 Switch board 31A Central fixed contact 31B Peripheral fixed contact 32 Dome-shaped movable contact 33 push plate 34 U-shaped mounting bracket 35A, 35B, 35C terminals

Claims (5)

(57) [Claims] 1. A cylindrical member comprising a disk portion and a cylindrical portion that stands vertically at the center thereof, the cylindrical portion having a through hole with a small diameter at the center of the cylindrical portion, and being inserted from the lower end of the circular hole of the bearing. A rotating body whose outer diameter is rotatably fitted and held, and which is inserted from the upper end of the circular hole of the bearing and is rotatably and vertically movably fitted and held, and a small diameter portion below the rotating body is a cylinder of the rotating body.
The elastic claw penetrates through the through hole of the part and rotates together with the rotating body, but the elastic claw protruding from the side surface of the small diameter part comes into contact with the small diameter part at the tip of the center hole of the rotating body. A rotating operation type comprising an operating shaft regulated to move up and down, and a fixed substrate which is arranged opposite to the disk portion of the rotating body at a predetermined interval and emits a rotation signal in cooperation with the disk portion. Electronic components. 2. The retaining portion of the operating shaft is formed by passing the elastic claw of the small diameter portion of the operating shaft through the small diameter portion of the center hole of the rotating body by utilizing the elasticity and the taper of the elastic claw support portion. Rotary operation type electronic parts. 3. A projection and a depression provided respectively on the outer periphery of the tip of the cylindrical portion of the rotating body, which is fitted and held in the circular hole of the bearing, and on the outer periphery of the fitting portion of the operating shaft and the outer periphery of the step portion of the small diameter portion. 3. The rotary operation-type electronic component according to claim 1, wherein the operation shaft rotates together with the rotating body but moves up and down independently by being slidably engaged in the direction. 4. A rotary operation type electronic component according to any one of claims 1 to 3 arranged push switch operation shaft concentric to open and close pushed at its tip by vertical movement of the operating shaft. 5. A disk portion and a circle vertically set on the center thereof.
A cylinder consisting of a cylinder and inserted from the lower end of the circular hole in the bearing
The rotating body whose outer diameter is rotatably fitted and held
Insertable from the top of the circular hole to be rotatable and vertically movable
And the small diameter part below it is the cylindrical part of the rotating body.
It goes through the through hole and rotates with the rotating body,
The elastic claw located at
It is regulated to move up and down within a certain range by the clasp
Opposing the operating shaft and the disk part of the rotating body at a predetermined interval
Fixed base that emits a rotation signal in cooperation with the disc
Rotating operation type electronic parts made of plate.