JPH10125177A - Rotary operation type electronic part, and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of components to realize cost down. SOLUTION: A bearing hole 13A, rotatably and fittedly holding the rotation spindle 11c of a rotating body 11 having a contact plate 12, is integrally provided on the center part of a main body case 13 to which an elastic contact 14 having a connecting terminal 14A is fixed by insertion molding. An article, obtained by stamping the contact plate 12 and the elastic contact 14 to the same elastic and metallic thin plate, is concurrently insertion molded to form the rotating body 11 and the main body case 13. This can form an inexpensive rotary operation type electronic part body small number of parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary operation type electronic component such as a rotary operation type encoder and a switch used in various electronic devices and a method of manufacturing the same.

[0002]

2. Description of the Related Art The technology of a conventional rotary operation type electronic component will be described with reference to FIGS. 9 and 10 using a rotary operation type encoder as an example.

FIG. 9 is a cross-sectional view of a conventional rotary operation type encoder, and FIG. 10 is an exploded perspective view of the rotary encoder. In FIG. 9, reference numeral 1 denotes a rotating body made of resin, and a circular rotary contact plate 1A has a circular comb. A tooth-shaped contact plate 2 is fixed by insert molding, and a rotating shaft portion 1B is vertically set at the center of the back surface.

[0004] Reference numeral 3 denotes a box-shaped case made of a resin. An elastic contact 4 made of an elastic metal thin plate elastically contacting the contact plate 2 is fixed to the bottom surface of the case by insert molding. 3 protrudes outward from the end.

[0005] Reference numeral 5 denotes a metal die-cast bearing that covers the opening of the box-shaped case 3 and rotatably holds the rotating shaft 1B of the rotating body 1. The bearing 5 is attached to the case 3 via a holding bracket 6. Fixed.

The holding bracket 6 integrally has a mounting leg 6A for fixing the encoder to a wiring board of a device to be used.

Reference numeral 7 denotes a moderation spring made of an elastic metal thin plate attached to the lower surface of the bearing 5. The elastic contact projection 7A elastically contacts the moderation peak 1C on the back surface of the rotary contact plate 1A of the rotating body 1. , When the rotating body 1 rotates.

The operation of this rotary operation type encoder is as follows. By rotating the operation knob 8 mounted on the tip of the rotary shaft 1B, the rotary contact plate 1A, that is, the contact plate 2 is rotated.
The elastic contact 4 elastically slides on the comb-like portion to generate a pulse signal, and transmits the pulse signal to the outside via the connection terminal 4A.

At the time of this rotation operation, the rotary contact plate 1
The elastic protrusion 7A of the moderation spring 7 elastically slides on the moderation crest 1C on the back surface of the moderator A along with the rotation of A to generate a moderation feeling in accordance with the generation of the pulse signal. there were.

[0010]

However, in the above-mentioned conventional rotary operation type electronic parts, since the number of components is large, many dies for manufacturing the parts are required, and the number of assembly steps is high, so that the cost is high. There was a problem that it was difficult to respond to requests for price reduction.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and a rotary operation type electronic component which can reduce the number of components of the rotary operation type electronic component and can reduce the cost, and a method of manufacturing the same. The purpose is to provide.

[0012]

SUMMARY OF THE INVENTION In order to solve the above problems, a rotary operation type electronic component and a method of manufacturing the same according to the present invention are provided.
At the center of the main body case where the elastic contacts having connection terminals are fixed by insert molding, a bearing hole for rotatably fitting and holding the rotating shaft of the rotating body having the contact plate is provided integrally, and the contact plate and The elastic contact is punched out of the same elastic metal thin plate and insert molded at the same time to form a rotating body and a main body case.

According to the present invention, it is possible to configure a rotary operation type electronic component with a small number of components, thereby realizing cost reduction.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a resin rotary body having a rotary shaft protruding from the center of a circular rotary contact plate to which a thin metal contact plate is fixed by insert molding. And a metal thin plate elastic contact which resiliently contacts the rotary contact plate and a connecting terminal electrically connected to the thin metal plate by insert molding, and has a bearing hole at the center for rotatably fitting and holding the rotary shaft. The main body case, and a retaining washer that is inserted into the bearing hole of the main body case from the resilient contact side and is fitted into the groove of the protruding portion on the opposite side of the rotating shaft and abuts on the tip of the bearing portion. The rotary operation type electronic component has a function that the rotary operation type electronic component can be configured with a small number of components.

According to a second aspect of the present invention, there is provided a rotating body made of resin having a rotating shaft protruding from the center of a circular rotating contact plate having a thin metal contact plate fixed by insert molding; Elastic contact made of a thin metal plate and a connecting terminal electrically connected to the elastic contact are provided by insert molding,
A resin main body case having a bearing hole at the center thereof for rotatably fitting and holding the rotation shaft, and a projection projecting to the opposite side of the rotation shaft inserted and fitted into the bearing hole of the main body case from the elastic contact side. It is a rotary operation type electronic component consisting of an operation shaft which is connected and fixed to the tip of the part, the lower end surface abuts the tip of the bearing part, and the upper part is the engagement part of the operation knob,
For rotary operation type electronic parts, etc., in which the operation knob is mounted after being attached to the equipment to be used, even if the length and shape of the operation knob mounting part of the rotating shaft differ, a simple mold with only the operation shaft It has the effect that it can be easily handled by manufacturing.

According to a third aspect of the present invention, there is provided a rotating body made of a resin having a rotating shaft protruding from the center of a circular rotating contact plate to which a thin metal contact plate is fixed by insert molding. Elastic contact made of a thin metal plate and a connecting terminal electrically connected to the elastic contact are provided by insert molding,
A resin main body case having a bearing hole at the center thereof for rotatably fitting and holding the rotation shaft, and a projection projecting to the opposite side of the rotation shaft inserted and fitted into the bearing hole of the main body case from the elastic contact side. This is a rotary operation type electronic component that consists of an operation knob that is connected to the tip of the part and has a lower end surface in contact with the tip of the bearing, and a knob-integrated knob that attaches the operation knob before mounting it on the equipment to be used. Regarding the operation type electronic component, regardless of the size and shape of the operation knob, it is possible to share the used component with the type of mounting the operation knob after mounting on the above-mentioned use set, and it can be configured with a smaller number of components. It has the action of:

According to a fourth aspect of the present invention, in the first aspect of the present invention, a resin mounting leg or a solderable metal inserted into a hole of a wiring board of a device to be used. At least one of the fixed legs made of a thin plate is provided in the main body case by integral molding or insert molding, and the fixing portion to be attached to the wiring board of the device to be used is formed without increasing the number of assembled parts. It has the effect of being able to.

According to a fifth aspect of the present invention, in the first aspect of the present invention, a moderating peak is provided on the rotating body, and the moderating peak is provided on the main body case by insert molding. A moderation spring made of thin metal sheet is elastically contacted to give a moderation feeling during the rotation operation of the rotating body, and a moderation feeling at the time of the rotation operation is provided without increasing the number of assembled parts. It has the effect of being able to.

According to a sixth aspect of the present invention, in the first aspect of the present invention, an elastic contact having a rotary contact plate and a connection terminal is punched and formed on the same elastic metal sheet. Are fixed by insert molding with resin at the same time, the rotating body and the body case are molded and formed, respectively, and then separated from each other. It has an effect that a part can be formed.

According to a seventh aspect of the present invention, in the fourth aspect of the invention, after the elastic contact and the fixed leg having the rotary contact plate and the connection terminal are stamped and formed on the same elastic metal sheet, this is made of resin. At the same time, the rotating body and the main body case are fixed and fixed by insert molding, and then formed and formed.
The two components are separated from each other, and the rotary operation type electronic component having the fixed legs to the wiring board of the device to be used can be formed with a small number of punching dies and forming dies.

According to an eighth aspect of the present invention, in the fifth aspect of the invention, after the elastic contact having the rotary contact plate and the connection terminal, the fixed leg, and the detent spring are formed by punching on the same elastic metal sheet, Are fixed by insert molding simultaneously with resin to form and form the rotating body and the body case, respectively, and then separate them.
With a small number of punching dies and molding dies, it is possible to form a fixed leg portion of the equipment to be used to the wiring board and a rotary operation type electronic component having a sense of moderation during the rotation operation.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 8 using a rotary operation type encoder as an example.

(Embodiment 1) First, the configuration of the rotary operation type encoder according to the present embodiment will be described.

FIG. 1 is a sectional view of a rotary operation type encoder according to a first embodiment of the present invention, and FIG. 2 is an exploded perspective view of the rotary operation type encoder. In FIG. A circular comb-shaped contact plate 12 is insert-molded and fixed to the contact plate portion 11A.
B is provided in an annular shape, and a rotating shaft 11C
Are set up vertically, and a narrow groove 11D is provided in an intermediate portion thereof.

Reference numeral 13 denotes a main body case made of a resin. An elastic contact 14 made of an elastic metal plate elastically contacting the contact plate 12 is provided on an upper flat portion thereof, and a connection extending from the side and projecting from a side end portion. A terminal 14A is fixed by insert molding, and a moderation spring 15 made of an elastic metal thin plate is similarly fixed inside the elastic contact 14 by insert molding, and a circular bearing hole 13A is provided at the center. I have.

The projecting portion 16A made of an elastic metal sheet and projecting in two directions perpendicular to the projecting side of the connection terminal 14A of the main body case 13 is bent downward to form the fixed leg portion 16 facing the main body case 13, and Together with the mounting legs 17 provided integrally on the lower end of the outer periphery of the case 13, they constitute a mounting and fixing part when the present rotary operation type encoder is mounted on a wiring board of a device to be used.

Then, the rotating shaft 11C of the rotating body 11 is inserted downward into the bearing hole 13A at the center of the main body case 13 from the elastic contact 14 side, and the contact plate 12 is set to the elastic contact 14 and the moderating peak 11B is set to the moderating. The elastic projections 15A of the spring 15 are respectively resiliently contacted, and a C-shaped washer 18 is snap-inserted from the side into the groove 11D at the intermediate portion of the rotating shaft 11C protruding upward from the bearing hole 13A, and abuts on the tip of the bearing 13B. Then, the rotary operation encoder is assembled by rotatably positioning and stopping the rotation shaft 11C.

By rotating the rotating body 11 via the operating knob 19 mounted on the tip of the rotating shaft 11C of the rotary operation type encoder configured as described above, the rotary contact plate 11A, The plate 12 rotates,
A pulse signal is generated by the elastic contact 14 elastically sliding on the comb-like portion, and this pulse signal is transmitted to the connection terminal 1.
4A and the rotary contact plate 11A.
The elastic protrusion 15A of the moderation spring 15 elastically slides on the moderation peak 11B with the rotation of the rotation of the spring, and a moderation feeling is generated in accordance with the generation of the pulse signal as in the case of the conventional technique.

Next, a method of manufacturing the rotating body 11 and the main body case 13 which are components of the rotary operation type encoder according to the present embodiment will be described.

FIG. 3 shows a portion 20A to be a rotating plate 12 fixed to the rotating body 11 by insert molding, an elastic contact 14 with connection terminals 14A fixed to the main body case 13 by insert molding, and a fixed leg portion. 16 is a perspective view showing a hoop-shaped elastic metal sheet 20 obtained by continuously punching a portion 20B to be a moderating spring 16 and a moderation spring 15. The hoop-shaped elastic metal sheet 20 is continuously insert-molded with resin. FIG. 4 shows a hoop material in which the rotating body 11 and the main body case 13 are continuously formed.

After individually cutting the rotating body 11 and the main body case 13 which are formed continuously in a hoop shape, the main body case 13 is moved from the state shown in FIG. Each of the legs is bent to impart resilience in the vertical direction, and the connection terminals 14 are provided.
A and the fixed leg 16 are also bent vertically and processed into the shape shown in FIG.

The connection terminal 14A and the fixed leg 16
May be bent after completion of assembly as a rotary operation type encoder.

The rotating body 11 and the main body case 13 formed as described above are combined as described above, and the C-shaped washer 18 is simply snap-inserted into the groove 11D of the rotating shaft 11C of the rotating body 11, so that the present invention can be used. The rotary operation type encoder according to the embodiment is completed.

(Embodiment 2) FIG. 6 is a sectional view of a rotary operation type encoder according to a second embodiment of the present invention.
The rotating body 21 is different from that described in the first embodiment.
The configuration and shape of the tip of the rotating shaft 21A are different.

That is, as shown in the cross-sectional view of FIG. 7, the rotating body 21 has a non-circular small-diameter portion 21C starting from a step 21B at an intermediate portion of the rotating shaft 21A, and as shown in FIG.
The rotating shaft 21A is inserted into the bearing hole 1 at the center of the main body case 13.
3A is inserted from below into a non-circular small-diameter portion 21C which is a protruding portion on the opposite side, and a non-circular hole 2 at the lower end of a cylindrical operating shaft 22
2A, and the bottom surface is the step 21 of the rotation shaft 21A.
B and at a position where it contacts the tip of the bearing portion 13B,
By heat caulking the tip of the non-circular small diameter portion 21C of the rotating shaft 21A protruding inside the operating shaft 22, the operating shaft 22
Is fixedly connected to the rotating shaft 21A, and the rotating body 21 is rotatably attached to the main body case 13.

The outer periphery of the operation shaft 22 is an engagement portion of an operation knob 23 having a D-shaped cross section. After the rotary operation type encoder is mounted on a device to be used, the operation knob 23 is attached to this portion. Generation of a pulse signal by mounting and rotating is the same as in the first embodiment.

When the length and shape of the mounting portion of the operation knob 23 are different depending on the device using the rotary operation type encoder, only the operation shaft 22 is changed without changing the rotating body 21. It is good.

(Embodiment 3) FIG. 8 is a sectional view of a rotary operation type encoder according to a third embodiment of the present invention.
The rotation body 21 is different from that described in the second embodiment.
The method of mounting the operation knob 24 to be mounted on the non-circular small-diameter portion 21C at the tip of the rotary shaft 21A is different.

That is, similarly to the second embodiment, it is inserted from below into the bearing hole 13A at the center of the main body case 13, and
A non-circular hole 24A at the center of a disc-shaped operation knob 24 of an outer peripheral operation type is fitted into the non-circular small-diameter portion 21C of the rotation shaft 21A protruding to the opposite side, and the lower surface of the rotation knob 21A is By thermally caulking the tip of the non-circular small-diameter portion 21C of the rotating shaft 21A at a position where it abuts on the step 21B and the tip of the bearing portion 13B, the operating knob 24 is directly connected to the rotating shaft 21A, and the rotating body 21 is 13
To be rotatable with respect to

As described above, the operation knob 24 is set in advance.
A pulse signal is generated by attaching and rotating a rotary operation type encoder mounted on a device to be used as in the first and second embodiments, and a rotation operation with an operation knob with a very small number of parts. A mold encoder can be formed.

[0041]

As described above, according to the present invention, the rotary operation type electronic parts can be constituted by a small number of parts, so that the number of dies for manufacturing the parts is small and the number of assembling man-hours is reduced, so that the advantageous effect that the cost can be reduced. Is obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of a rotary operation type encoder according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a perspective view of a hoop-shaped elastic metal sheet obtained by punching a portion fixed to the rotating body and the main body case by insert molding.

FIG. 4 is a perspective view of a hoop material obtained by insert-molding the rotating body and the main body case into an elastic metal sheet.

FIG. 5A is a cross-sectional view of the main body case before bending the elastic contact, the moderating spring, the connection terminal, and the fixing leg. FIG. 5B is a cross-sectional view of the main body case after the bending processing.

FIG. 6 is a sectional view of a rotary operation type encoder according to a second embodiment of the present invention.

FIG. 7 is a sectional view of the rotating body.

FIG. 8 is a sectional view of a rotary operation type encoder according to a third embodiment of the present invention.

FIG. 9 is a sectional view of a conventional rotary operation type encoder.

FIG. 10 is an exploded perspective view of the same.

[Explanation of symbols]

 11, 21 Rotating body 11A Rotating contact plate 11B Moderation peak 11C, 21A Rotating shaft 11D Groove 12 Contact plate 13 Body case 13A Bearing hole 13B Bearing 14 Elastic contact 14A Connection terminal 15 Moderating spring 15A Elastic projection 16 Fixed leg Part 16A Projecting part 17 Mounting leg part 18 Washer 19, 23, 24 Operation knob 20 Elastic metal sheet 20A Part fixed by insert molding to rotating body 20B Part fixed by insert molding to main body case 21B Step 21C Non-circular small diameter part 22 Operation shaft 22A, 24A Non-circular hole

Claims (8)

[Claims] 1. A rotating body made of resin having a rotating shaft protruding from the center of a circular rotary contact plate to which a thin metal contact plate is fixed by insert molding, and a thin metal elastic plate elastically contacting the rotary contact plate. A resin main body case having a contact and a connection terminal electrically connected thereto by insert molding, and having a bearing hole at the center for rotatably fitting and holding the rotating shaft, and an elastic contact in a bearing hole of the main body case. A rotary operation type electronic component comprising a retaining washer that is fitted into a groove of a protruding portion on the opposite side of the rotary shaft inserted and fitted from the side and abuts on the tip of the bearing portion. 2. A rotating body made of resin having a rotating shaft protruding from the center of a circular rotary contact plate to which a thin metal contact plate is fixed by insert molding, and an elastic thin metal plate elastically contacting the rotary contact plate. A resin body case having a contact and a connection terminal electrically connected thereto by insert molding, and having a bearing hole at the center for rotatably fitting and holding the rotating shaft, and an elastic contact in the bearing hole of the body case. From the operating shaft which is connected and fixed to the tip of the protruding portion on the opposite side of the rotating shaft inserted and fitted from the side, the lower end surface abuts the tip of the bearing portion, and the upper portion is the engaging portion of the operating knob. Rotary operation type electronic parts. 3. A rotating body made of resin having a rotating shaft protruding from the center of a circular rotary contact plate to which a thin metal contact plate is fixed by insert molding, and an elastic thin metal plate elastically contacting the rotary contact plate. A resin main body case having a contact and a connection terminal electrically connected thereto by insert molding, and having a bearing hole at the center for rotatably fitting and holding the rotating shaft, and an elastic contact in a bearing hole of the main body case. A rotary operation type electronic component comprising an operation knob connected to a distal end of a protrusion protruding to the opposite side of the rotary shaft inserted and fitted from a side and having a lower end surface in contact with a distal end of a bearing portion. 4. A method according to claim 1, wherein at least one of a resin mounting leg inserted into a hole of a wiring board of a device to be used or a fixed leg made of a thin metal plate capable of being soldered is provided in the main body case by integral molding or insert molding. Item 4. A rotary operation type electronic component according to any one of Items 1 to 3. 5. A moderating crest is provided on the rotating body, and a moderating spring made of a thin metal plate provided by insert molding on the main body case is elastically contacted with the moderating crest to give a moderating feeling when rotating the rotating body. The rotary operation type electronic component according to any one of claims 1 to 4, wherein 6. An elastic contact having a rotary contact plate and a connection terminal is stamped and formed on the same elastic metal sheet, and then this is fixed by insert molding simultaneously with a resin to form and form a rotating body and a main body case, respectively. The method for manufacturing a rotary operation type electronic component according to any one of claims 1 to 5, wherein the two components are separated from each other. 7. An elastic contact having a rotary contact plate and a connection terminal and a fixed leg are stamped and formed on the same elastic metal thin plate, and then fixed by insert molding with resin at the same time to fix the rotating body and the main body case. After molding and forming respectively,
5. The method for manufacturing a rotary operation type electronic component according to claim 4, wherein both are separated. 8. An elastic contact having a rotary contact plate and a connection terminal, a fixed leg, and a detent spring are stamped and formed on the same elastic metal thin plate, and then fixed by insert molding with resin at the same time to fix the rotating body. 6. The method for manufacturing a rotary operation type electronic component according to claim 5, wherein the main body cases are formed and formed, respectively, and then separated.