JP2001167667A - Rotation type encoder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems of the conventional rotation type encoder that the contact part 52a of contact piece 53 embedded in the insulation base plate 51 is attached to the hole 51a so as to restrict the length of the contact part 52a, to decrease the life and to degrade the contact property. SOLUTION: In the rotation type encoder, the insulation base plate 1 has a main base plate 2, a sub base plate 5 and thin wall part 4 connecting the main base plate 2 and sub main plate 4, the insulation base plate 1 is folded and bent in a part of thin wall part and constructed by coupling the main base plate 2 and sub base plate 5. The contact piece 6 is protruded from the insulation base plate 1 to the rotational body 8 in the upright state. Therefore, a recess hole 51a of the insulation base plate 51 is not needed, the length of the contact part 6a of the contact piece 6 can be elongated sufficiently, thus bringing forth a long-life rotation type encoder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary encoder used for computer terminal equipment, portable communication equipment, audio equipment and the like.

[0002]

2. Description of the Related Art The configuration of a conventional rotary encoder is shown in FIG.
Referring to FIGS. 1 to 55, an insulating base 51 made of a synthetic resin molded product includes a substrate portion 51b having a hole 51a at a central portion, and a pair of right-angled extending portions from both ends of the substrate portion 51b. An arm portion 51c and a support portion 51d provided at an end of the arm portion 51c and having a partially cut-out hole.
And Contact piece 52 made of metal plate and common contact piece 5
3 has contact portions 52a, 53a and terminal portions 52b, 53b, and the contact piece 52 and the common contact piece 53 are buried and attached to the board portion 51b in a state of being juxtaposed. 53a is located in the hole 51a, and the terminal portions 52b, 53b are projected outward from the substrate portion 51b.

An elastic plate 54 made of a metal plate has a contact piece 52,
The board part 51b is arranged in a state where it is juxtaposed with the common contact piece 53.
Attached to. The cylindrical rotating body 55 includes a cylindrical portion 56 made of a molded product of a synthetic resin, and a cord member 57 made of a conductive material provided on an outer circumferential surface of the cylindrical portion 56. The cord member 57 is formed by molding twice with a conductive resin, and
6, a common pattern 57a, a comb-like code pattern 57b, and an uneven portion 56a for click are formed on the outer circumferential surface of the common pattern 57a, the code pattern 57b, and the uneven portion 56a. They are arranged side by side in the rotation axis direction. Further, a shaft portion 56b is provided on both end surfaces of the cylindrical portion 56, and a non-circular hole 56c is formed in the center portion.

The rotating body 55 has a shaft portion 56b snapped to a support portion 51d of a pair of arm portions 51c, and is rotatably attached to the insulating base 51.
5, the contact part 53a of the common contact piece 53 contacts the common pattern 57a, and the contact part 52a of the contact piece 52 contacts the code pattern 57b,
Further, the elastic plate 54 is in elastic contact with the uneven portion 56a.
A dome-shaped cover 58 is attached to the insulating base 51 so as to cover the rotating body 55, and the encoder main body E2
Is configured. As shown in FIG. 53, such an encoder body E2 mounts the lower surface of the insulating base 51 on the printed circuit board P2 and prints the terminal portions 52b and 53b of the contact piece 52 and the common contact piece 53. Substrate P2
And the terminal portions 52b and 53b are soldered to a wiring pattern (not shown), so that the encoder body E2 is attached to the printed circuit board P2.

The operation of the rotary encoder having such a configuration will be described.
When a drive shaft (not shown) is inserted into 6c, and the drive shaft is rotated from the outside, the rotating body 55 rotates. Then, the code member 57 also rotates, and the common contact piece 53 is always in contact with the common pattern 57a, and the contact piece 52 is in contact with and separated from the code pattern 57b.
A pulse signal is generated between the common contact piece 53 and the contact piece 52. In addition, the concave and convex portions 5 accompanying the rotation of the rotating body
6a, the elastic plate 54 is disengaged from the uneven portion 56a,
The rotating body 55 starts to click. The operation of the rotary encoder is performed in this manner.

[0006]

In the conventional rotary encoder, a contact portion 52a of a contact piece 52 buried in an insulating base 51 is attached and positioned at a hole 51a provided in the insulating base 51. Therefore, there is a problem that the length of the contact portion 52a cannot be increased, so that the life is short and the contact property is deteriorated. In addition, a common pattern 57a and a code pattern 57
Since b is arranged side by side, there is a problem that the size increases in the direction of the rotation axis.

Therefore, the present invention provides a small rotary encoder having good contact properties.

[0008]

As a first means for solving the above-mentioned problems, a rotatable cylindrical, cylindrical or frusto-conical rotator made of an insulating material and a rotatable rotator, A code pattern provided on the outer surface, comprising a plurality of contact pieces that are in contact with the code pattern and attached to the insulating base, wherein the insulating base is a main base, a sub-base, , A thin portion connecting the main base portion and the sub-base portion, the insulating base is bent at the thin portion, the main base portion and the sub-base portion And the contact piece protrudes in the direction of the rotating body in an upright state from the insulating base.

Further, as a second solution, the main base and the sub-base are combined with each other by fitting in a concave and convex manner. As a third solution, the thin portion is formed of an insulating material constituting the insulating base. As a fourth solution, the thin portion is formed of a metal member embedded in the insulating base. As a fifth solution, the contact piece is buried and attached to the insulating base, and the thin portion is constituted by a part of the contact piece.

Further, as a sixth solution, the sub base is provided on both sides of the main base, and the contact piece is attached to the sub base. As a seventh solution, the code pattern is provided on the outer circumferential surface of the rotating body. Also, the eighth
As a means for solving the problem, a common pattern that is electrically connected to the code pattern is provided on one end surface of the rotating body,
A common contact piece provided on the main base portion of the insulating base is configured to contact the common pattern. As a ninth solving means, a click uneven portion is formed on the other end surface of the rotating body facing the one end surface, and an engaging member is disengaged from the uneven portion to form a click mechanism. Configured.

[0011]

FIG. 1 shows a rotary encoder according to the present invention.
50, FIG. 1 is a front view of the rotary encoder of the present invention, FIG. 2 is a rear view of the rotary encoder of the present invention, FIG. 3 is a top view of the rotary encoder of the present invention,
4 is a bottom view of the rotary encoder of the present invention, FIG. 5 is an exploded perspective view of the rotary encoder of the present invention, FIG. 6 is a sectional side view of a main part of the rotary encoder of the present invention, and FIG. FIG. 8 is a perspective view of a rotary encoder according to the present invention, in which an insulating base and a rotating body are combined.

FIG. 9 is a front view of a first embodiment of the insulating base according to the rotary encoder of the present invention, and FIG. 10 is a side view of the first embodiment of the insulating base according to the rotary encoder of the present invention. FIG. 11 is a bottom view of the first embodiment of the insulating base according to the rotary encoder of the present invention, and FIG. 12 is related to the rotary encoder of the present invention, and relates to the relationship between the insulating base and the contact pieces of the first embodiment. FIG. 13 is an explanatory diagram showing a method of manufacturing an insulating base according to the rotary encoder of the present invention.

FIG. 14 is a front view of a second embodiment of the insulating base according to the rotary encoder of the present invention, and FIG. 15 is a side view of the second embodiment of the insulating base according to the rotary encoder of the present invention. FIG. 16 is a bottom view of a second embodiment of the insulating base according to the rotary encoder of the present invention, and FIG. 17 is related to the rotary encoder of the present invention, and shows the relationship between the insulating base and the contact pieces of the second embodiment. FIG.

FIG. 18 is a front view of a first embodiment of a rotating body according to the rotary encoder of the present invention, FIG. 19 is a side view of the first embodiment of the rotating body of the rotary encoder of the present invention,
FIG. 20 shows a first example of a rotating body according to the rotary encoder of the present invention.
FIG. 21 is a back side view of the embodiment, FIG. 21 is a cross-sectional side view of the first embodiment of the rotating body according to the rotary encoder of the present invention, and FIGS.
Is an explanatory view showing a method of manufacturing a rotating body and a cord member according to a first embodiment of the rotary encoder of the present invention, and FIG. 26 is a perspective view of a cord member according to the rotary encoder of the present invention.

FIG. 27 is a front view of a rotary member according to a second embodiment of the rotary encoder according to the present invention. FIG. 28 is a side view of the rotary member according to the second embodiment of the rotary encoder according to the present invention.
FIG. 29 shows a second example of the rotating body according to the rotary encoder of the present invention.
FIG. 30 is a cross-sectional side view of a rotary body according to a second embodiment of the rotary encoder according to the present invention, and FIG. 31 is related to the rotary encoder according to the present invention. FIG. 32 is a perspective view showing a method of attaching members, FIG. 32 is a front view showing a state where a rotating body and a cord member according to a second embodiment are combined, and FIG. 33 is a rotary encoder of the present invention. FIG. 10 is a side view showing a state where the rotating body and the cord member according to the second embodiment are combined.

FIG. 34 is a front view of an engaging member according to the rotary encoder of the present invention, FIG. 35 is a top view of the engaging member of the rotary encoder of the present invention, and FIG. 36 is a rotary encoder of the present invention. 37 is a bottom view of the engaging member according to FIG.
37 is a sectional view taken along line 37-37 of FIG.

FIG. 38 is a perspective view of a first embodiment of a mounting plate according to the rotary encoder of the present invention. FIG. 39 is a front view of the first embodiment of the mounting plate of the rotary encoder of the present invention.
FIG. 40 shows the first mounting plate of the rotary encoder according to the present invention.
FIG. 41 is a side view of the embodiment, FIG. 41 is a bottom view of the first embodiment of the mounting plate according to the rotary encoder of the present invention, and FIG. 42 is related to the rotary encoder of the present invention. FIG. 43 relates to a rotary encoder of the present invention, and FIG. 43 is a cross-sectional view of a main part showing a state in which a mounting plate of the first embodiment is mounted on an encoder main body. FIG. FIG. 4 is a perspective view showing the mounting of the mounting plate of the first embodiment to the encoder main body in the rotary encoder.

FIG. 45 is a front view of a second embodiment of the mounting plate according to the rotary encoder of the present invention. FIG. 46 is a side view of the second embodiment of the mounting plate according to the rotary encoder of the present invention.
FIG. 47 shows a second example of the mounting plate according to the rotary encoder of the present invention.
48 is a rear view of the embodiment, FIG. 48 relates to a rotary encoder of the present invention, and a perspective view showing a state in which a mounting plate of a second embodiment is attached to an encoder main body. FIG. 49 relates to a rotary encoder of the present invention. FIG. 50 is a rear view showing a state where the mounting plate of the second embodiment is mounted on the encoder main body. FIG. 50 is a side view showing a state where the mounting plate of the second embodiment is mounted on the encoder main body according to the rotary encoder of the present invention. FIG.

Next, the structure of the rotary encoder according to the present invention will be described with reference to FIGS. 1 to 50. The insulating base 1 of the first embodiment, which is made of an insulating material, is shown in FIGS. As shown, a rectangular main base 2, a side wall 3 provided upright from the main base 2 at right angles, and a pair of thin bases 4 connected from both sides of the main base 2. And the sub-base part 5. The main base portion 2 has a pair of concave portions 2a provided on both end surfaces thereof, a columnar convex portion 2b provided at the center of the front end surface, and a tapered portion provided on the lower surface. And a latch portion 2c.

The side wall 3 is provided upright from a corner of the upper surface of the main base 2. The side wall 3 has a circular hole 3b having a flange 3a provided at the center. A pair of relief holes 3c provided from both sides of the hole 3b to the main base 2, a pair of upper wall portions 3d extending in a direction perpendicular to the upper portion, and a pair of upper wall portions 3d. A groove 3e;
It has a latch portion 3f having a step provided on the upper surfaces of the pair of upper wall portions 3d, and a projection 3g. Further, the pair of sub-base portions 5 has a convex portion 5 having a rounded end provided on an end surface.
a, a small ridge 5b provided on the lower surface of the ridge 5a
(See FIG. 11).

The insulating base 1 is formed by bending the thin portion 4 from the state shown in FIG.
Then, the rectangular insulating base 1 is formed as shown in FIG. 8 by press-fitting the convex portion 5a of the sub-base portion 5. At this time, the convex ridges 5b provided on the sub-base 5 facilitate and press-fit the sub-base 5 into the recess 2a.

The plurality of contact pieces 6 of the first embodiment made of a metal plate have a contact portion 6a and a terminal portion 6b, and the plurality of contact pieces 6 are embedded in the sub-base portion 5, respectively. The contact portion 6a projects upward from the upper surface of the insulating base 1, and the terminal portion 6b projects downward from the lower surface of the insulating base 1. That is, it is bent so as to be positioned in a parallel state at substantially the same position as the side wall portion 3.

The common contact piece 7 of the first embodiment made of metal
Has a pair of contact portions 7a and a terminal portion 7b. The common contact piece 7 is buried and attached at a position of the main base portion 2 close to the side wall portion 3 side, and the contact portion 7a is an insulating base. The terminal portion 7b protrudes upward from the upper surface of the base 1 and is located in the escape hole 3c of the side wall portion 3, and protrudes downward from the lower surface of the insulating base 1. That is, it is bent so as to be positioned in a parallel state at substantially the same position as the side wall portion 3. As a result, it is in a prone mounting state that can be mounted with reference to the side wall 3 surface.

In this embodiment, a part of the plurality of contact pieces 6 is buried across the main base part 2 and the sub base part 5. The thin portion 4 connecting the main base portion 2 and the sub base portion 5 described above is formed. The thin portion 4 may be formed by embedding a plate-shaped metal member different from the contact piece 6 in the insulating base 1 to form the thin portion 4 with this metal member. The thin portion 4 connecting the base 2 and the sub-base portion 5 may be formed by the thin portion 4 made of an insulating material constituting the insulating base 1.

Next, a method of manufacturing the insulating base 1 and the contact pieces 6 and the common contact piece 7 will be described with reference to FIG. 13. First, a metal plate 21 made of a hoop material has a plurality of holes. 22 are provided to form an upper cross section 21a and a lower cross section 21b. In addition, by forming the hole 22, a loop-shaped portion 21 c for forming the contact portion 7 a of the common contact piece 7 is provided in the hole 22 at the center of the metal plate 21, and a part of the loop-shaped portion 21 c is formed. Is in a state where the terminal portion 7b of the common contact piece 7 is connected to the lower crosspiece 21b by the connecting portion 21d.

The loop portion 21c and the connecting portion 21
On both sides of d, the contact portion 6a of the contact piece 6 is connected to the upper beam portion 21a by the connecting portion 21e, and the terminal portion 6b of the contact piece 6 is connected to the lower beam portion 21b by the connecting portion 21f. The connection piece 21g is formed between the portion 6a and the terminal portion 6b.
The connecting piece 21g becomes the thin portion 4, and the lower portion of the contact piece 6a is further connected to the lower cross section 21b by a connecting portion 21h in order to ensure the holding of the contact piece 6a during molding. It is in a connected state.

The metal plate 21 constructed as described above
Is sandwiched by a molding die (not shown), and when a resin is injected into the forming die, as shown by a two-dot chain line in FIG.
When the main base part 2, the side wall part 3, and the sub base part 5 of the insulating base 1 are formed, and then cut at the position of the line 23, the contact pieces 6 and the common contact pieces 7 are separated from the metal plate 21. At the same time, the contact portion 7a of the common contact piece 7 is cut off from the loop-shaped portion 21c to form a pair of cantilevered contact portions 7a. As a result, the insulating base 1 as shown in FIG. 9 is manufactured. is there.

FIGS. 14 to 17 show a second embodiment of the insulating base 1, the contact piece 6, and the common contact piece 7. In this embodiment, the contact with the first embodiment is different from that of the first embodiment. Only the shapes of the terminal portions 6b and 7b of the piece 6 and the common contact piece 7 are different,
Other configurations and the manufacturing method are the same as those of the first embodiment, and therefore, the same components are denoted by the same reference numerals and description thereof will not be repeated. That is, in the second embodiment, the terminal portions 6b, 7
b protrudes from the lower surface side of the insulating base 1 and its tip is
It is bent in a letter shape.

The cylindrical rotating body 8 of the first embodiment, which is made of an insulating molded product, is particularly, as shown in FIGS.
A shaft portion 8a provided on one end side, and a holding portion 8b formed to be connected to the shaft portion 8a and having a larger diameter than the shaft portion 8a;
End face 8 orthogonal to the rotation axis direction, which is one side of holding portion 8b
c is provided between the shaft portion 8a and the holding portion 8b, the end surface 8e which is the other side of the holding portion 8b and is orthogonal to the rotation axis direction, and is provided at the center portion. A hexagonal non-circular hole 8f and a locking portion 8g provided at an end of the outer periphery of the shaft portion 8a.

The cord member 9 of the first embodiment made of a metal plate
As shown in FIG. 26, in particular, a ring-shaped plate portion 9a forming a common pattern and a plurality of tongue pieces 9b bent from the inner peripheral portion of the plate portion 9a to form a code pattern are formed. Have. The cord member 9 is embedded and attached to the rotating body 8, a ring-shaped plate-like portion 9a forming a common pattern is located on an end face 8e, and a tongue piece 9b forming a code pattern is attached to a holding portion 8b. Is exposed on the outer circumferential surface of.

The method of manufacturing the rotating body 8 and the cord member 9 will be described with reference to FIGS.
As shown in FIG. 22, in the center of the hoop-shaped metal plate 25, a comb-shaped hole 26 is provided to form a tongue piece 9b. The tip of the tongue piece 9b has a chamfered shape so that the length can be set long. Next, as shown in FIG. 23 and FIG.
7 to form the cross section 25a,
5a is formed with a plate-shaped portion 9a connected by a connecting portion 25b,
In addition, the tongue piece 9b is bent from the plate-like portion 9a. Next, as shown in FIG. 25, the plate-shaped portion 9a is
When the resin is injected into the cavity 30 of the two molds 28 and 29 while the tongue piece 9b is held by the groove 29a of the mold 29, the rotating body 8 is formed.
As shown in FIG. 3, when cutting is performed at the position of the line 31, the cord member 9 as shown in FIG. 26 is buried in the rotating body 8, and the production of the rotating body 8 and the cord member 9 is completed. In the step shown in FIG. 25, the groove 29a of the mold 29 is formed.
Is set slightly smaller than the size of the tongue piece 9b, the entrance of the groove 29a is formed in a tapered shape, and the tongue piece 9b is housed in the groove 29a without a gap. , The resin film is not formed on the outer surface of the tongue piece 9b. Further, the mold 29 forms a part of the concave portion of the click uneven portion 8d at a position where the tongue piece 9b is pressed.

FIGS. 27 to 33 show a second embodiment of the rotating body 8 and the cord member 9. In this embodiment, the cord member 9 is fitted and attached to the rotating body 8. FIG.
And, in addition to the configuration of the first embodiment,
The outer circumferential surface of the holding portion 8b is provided with a plurality of grooves 8h in the direction of the rotation axis, and the other configuration is the same as that of the above-described embodiment. The description is omitted. In addition, the cord member 9
As shown in FIG. 1, a ring-shaped plate-shaped portion 9a forming a common pattern and a tongue piece 9b bent from the plate-shaped portion 9a to form a code pattern are formed in advance.

Then, as shown in FIG. 31, with the cord member 9 positioned on the end face 8e side of the rotating body 8, the tongue piece 9
When the tongue piece 9b is fitted into the groove 8h by press-fitting using the chamfered portion at the tip of b as a guide, as shown in FIGS. 32 and 33, the plate-like portion 9a is located on the end face 8e and the tongue piece 9b is The cord member 9 is attached to the rotating body 8 in a state where the cord member 9 is exposed on the outer circumferential surface of the holding portion 8b.

The rotating member 8 and the cord member 9 having the structure as in the first and second embodiments are connected to the shaft 8a of the rotating member 8.
Is inserted into the hole 3b of the side wall 3 and held rotatably. When the rotating body 8 is mounted on the insulating base 1, the locking portion 8 g is pulled out from the hole 3 b to prevent the rotating body 8 from coming off, and the pair of contact portions 7 a of the common contact piece 7 have end faces. 8e, and comes into contact with the plate-shaped portion 9a, which is the common pattern of the cord member 9. When the rotating body 8 is attached to the insulating base 1, the plurality of contact pieces 6 are respectively arranged at positions opposite to each other with respect to the circumferential surface of the rotating body 8, and the code pattern of the code member 9 is formed. The contact piece 6 comes into contact with and separates from the tongue piece 9b, and the contact piece 6 is pressed against the rotating body 8 as shown in FIGS. At the position beyond the rotation center of No. 8, the pressure is suppressed.
And a pair of contact parts 6a are made to contact a code pattern with a phase difference.

Although the rotating body 8 has been described as being cylindrical, it may be cylindrical or frustoconical. Further, since the tongue piece 9b is bent from the inner peripheral portion of the plate-like portion 9a, the connecting member 25b can be arranged at an arbitrary position on the outer periphery of the cord member 9, and the hoop is formed even when the interval between the tongue pieces 9b is reduced. Although continuous processing with a material is possible, the tongue piece 9b is
May be bent from the outer peripheral portion of. Further, the tongue piece 9b of the cord member 9 has been described as being provided on the outer circumferential surface of the cylindrical rotating body 8, but the tongue piece 9b has been provided on the inner circumferential surface of the cylindrical rotating body 8. But it is good. Further, the cord member 9
Has been described using a metal plate, but a code pattern and a common pattern may be formed by sawing a metal material, conductive powder, plating, or the like.

The engagement member 10 made of a metal plate is particularly
As shown in FIGS. 4 to 37, a rectangular plate-shaped base 10a,
The base 10a is cut and bent into a C-shape at the center, and has an engaging portion 10b having a convex portion at the tip, a circular hole 10c provided at a lower portion of the base 10a, and bent from both sides of the base 10a. A pair of side plates 10d, a cut-and-raised portion 10e provided on the side plate 10d, a T-shaped upper side plate 10g that is bent from the upper side of the base 10a and has a locking portion 10f at the distal end, and a lower side of the base 10a. Bent,
C-shaped lower side plate 10 having a rectangular hole 10h in the center
j.

The engaging member 10 is provided with an engaging portion 10
The protrusion 2b is inserted into the hole 10c in accordance with the insulating base 1 such that b faces the end face 8c of the rotating body 8 provided with the uneven portion 8d. Thereafter, the upper side plate 10g is positioned on the upper wall portion 3d and pushed in, and the locking portion 10f is hung on the latch portion 3f, and the upper side plate 10g is positioned in the groove portion 3e. 3 attached. Simultaneously with the mounting of the upper side plate 10g, the lower side plate 10j is positioned on the lower surface of the main base portion 2 and pushed in, and the latch portion 2c is positioned in the hole 10h, and the lower side plate 10j is hooked on the latch portion 2c. Then, the lower side plate 10j is attached to the main base 2. In this way, the engaging member 10 is in a state of being attached to the rotating body 8 at a vertical position, and the side plate 10d is at a position of being located at the left and right positions with respect to the rotating body 8. I have. When the engaging member 10 is attached, the convex portion of the engaging portion 10b engages with the concave and convex portion 8d in a state where it can be disengaged from the concave and convex portion 8d provided on the end face 8c of the rotating body 8. Configures the click mechanism. Furthermore,
The engagement member 8, the contact piece 6, and the common contact piece 7 extend in the direction of the rotating body 8 with the insulating base 1 as a reference plane.

The encoder body E1 is formed by such a configuration. The mounting plate 11 of the first embodiment, which is made of a metal plate that can be soldered, is shown in FIGS.
As shown in FIG. 44, a flat plate portion 11c having a large circular hole 11a provided in the center portion and a small hole 11b provided in the lower portion, and a pair of flat plates 11c bent oppositely from both sides of the flat plate portion 11c. Arm 11d and this arm 11d
A rectangular hole 11e provided at the center of the arm 11d and an arm 11d
And a mounting portion 11f bent from the end of the mounting portion.

The mounting plate 11 is configured as shown in FIG.
As shown in FIG. 44 to FIG. 44, first, the convex portion 2b of the insulating base 1 of the first embodiment is inserted into the small hole 11b while being positioned on the engaging member 10 side of the encoder body E1. Thereafter, the arm 11d is pushed in on the side plate 10d of the engagement member 10, the cut-and-raised portion 10e is located in the hole 11e, and the arm 11d is hooked on the cut-and-raised portion 10e. The attachment plate 11 is attached to the engagement member 10 by being snapped to the engagement member 10.

When the mounting plate 11 is mounted, as shown in FIG. 43, the flat plate portion 11c is superimposed on the outside of the plate-like base portion 10a of the engaging member 10, and the arm portion 11d is moved. It is attached to the side plate 10d of the engagement member 10 at a lateral position on the left and right with respect to the rotating body 8, and
The lower surface of the mounting portion 11f bent from the end of the arm portion 11d extending in the rotation axis direction of the rotating body 8 is positioned in a parallel state at one end of the insulating base 1, that is, at substantially the same position as the side wall portion 3. are doing.

As shown in FIG. 43, the encoder body E1 to which the mounting plate 11 is mounted has the side wall 3 side mounted on the printed circuit board P1. At this time, the projection 3g is inserted into the hole 13 of the printed circuit board P1, and the encoder body E
1 is positioned, and the contact pieces 6, the terminal portions 6b and 7b of the common contact piece 7 and the mounting portion 11f of the mounting plate 11 are positioned on a wiring pattern (not shown) formed on the upper surface of the printed circuit board P1. It will be in the state of having done.

Then, the contact piece 6, constructed as described above,
The common contact piece 7 and the mounting plate 11 are surface-mounted on the wiring pattern by cream solder and mounted on the printed circuit board P1, whereby the encoder body E1 is in a state orthogonal to the rotation axis direction of the rotating body 8. Printed circuit board P1
, And the encoder body E1 is in an attached state by a face-down type.

The operation of the rotary encoder having such a configuration will be described first.
a through the engaging member 10 to engage an operation member (not shown) in the hole 8f of the rotating body 8, or penetrate through a hole (not shown) in the printed circuit board P1 to the hole 8f of the rotating body 8. When the operation member is rotated after the engagement of the operation member, the rotating body 8 and the code member 9 rotate with the shaft 8a as a support. And
The rotating body 8 is configured such that the uneven portion 8 d engages and disengages with the engaging portion 10 b to perform a click operation, and the tongue 9 b contacts the contact piece 6.
, And the common contact piece 7 is always in contact with the plate-shaped portion 9a, so that a two-phase pulse signal is generated between the contact piece 6 and the common contact piece 7.

FIGS. 45 to 50 show a second embodiment of the mounting plate. In this second embodiment, the mounting plate 12 is made of a metal plate which can be soldered and has a circular shape provided at the center. A flat plate portion 12c having a large hole 12a and a small hole 12b provided at a lower portion, a pair of arm portions 12d bent oppositely from both side portions of the flat plate portion 12c, and a central portion of the arm portion 12d. A rectangular hole 12e, a mounting portion 12f bent from a side end of the arm portion 12d,
Protrusion 12g provided on attachment portion 12f side of flat plate portion 12c
And

The mounting plate 12 is configured as shown in FIG.
As shown in FIG. 50 to FIG. 50, similarly to the above-described embodiment, the encoder body E1 is positioned on the engagement member 10 side, and first, the convex portion 2b of the insulating base 1 of the second embodiment is inserted into the small hole 12b. I do. Thereafter, the arm 12d is connected to the side plate 10 of the engagement member 10.
d, the cut-and-raised portion 10e is located in the hole 12e, and the arm portion 12d is hooked on the cut-and-raised portion 10e, whereby the mounting plate 12 is snapped to the engagement member 10 and the mounting plate 12 is snapped. Is attached to the engagement member 10.

When the mounting plate 12 is mounted, as shown in FIGS. 48 to 50, the flat plate portion 12c is
0, and the arm 12d is attached to the side plate 10d of the engaging member 10 at the left and right lateral positions with respect to the rotating body 8 while being superposed on the outside of the plate-like base 10a.
The lower surface of the mounting portion 12f bent from the side end of the arm portion 12d extending in the rotation axis direction of the rotating body 8 has an L-shape of the contact piece 6 and the common contact piece 7 extending from the lower surface of the insulating base 1. Are located at substantially the same positions as the terminal portions 6b and 7b.

Then, as shown in FIGS. 49 and 50, the encoder main body E1 to which the mounting plate 12 is mounted has the lower surfaces of the main base 2 and the sub-base 5 opposed to the printed circuit board P1. The protrusion 12g is inserted into the hole 13 of the printed circuit board P1, the encoder body E1 is positioned, and the contact pieces 6, the terminal portions 6b and 7b of the common contact piece 7, and the mounting portion 12f of the mounting plate 12 are printed. The substrate is placed on a wiring pattern (not shown) formed on the upper surface of the substrate P1.

Then, the contact piece 6, constructed as described above,
The common contact piece 7 and the mounting plate 12 are surface-mounted on the wiring pattern by cream solder and mounted on the printed circuit board P1, whereby the encoder body E1 is in a state parallel to the rotation axis direction of the rotating body 8. The encoder main body E1 is attached to the printed board P1 and is in an attached state by a standing mold.

The operation of the rotary encoder having such a configuration will be described first.
a, after the operating member (not shown) is engaged with the hole 8f of the rotating body 8 through the engaging member 10 or the operating member is engaged with the hole 8f of the rotating body 8 from the opposite side. When the operating member is rotated, the rotating body 8 and the code member 9 rotate with the shaft 8a as a support. The rotating body 8 is configured such that the uneven portion 8d engages and disengages with the engaging portion 10b to perform a click operation, the tongue piece 9b comes into contact with and separates from the contact piece 6, and the common contact piece 7 becomes a plate-like portion. 9a, the pulse signal is generated between the contact piece 6 and the common contact piece 7 at all times.

In the above embodiment, the description has been given of the case where the common pattern is used. However, if a plurality of contact portions are provided on one contact piece and at least one of the contact portions is always in contact with the code pattern, the common pattern is used. The contact piece need not be provided.

[0051]

In the rotary encoder according to the present invention, the insulating base 1 comprises a main base 2, a sub-base 5, and a main base 2.
The insulating base 1 is bent at the thin portion 4 so that the main base 2 and the sub base 5 are combined. In addition to the above, the contact piece 6 protrudes from the insulating base 1 in the direction of the rotating body 8 in an upright state, so that the conventional escape hole 51a of the insulating base 51 becomes unnecessary, and the length of the contact portion 6a of the contact piece 6 becomes longer. The length of the rotary encoder can be sufficiently long, the contact property is good, and the rotary encoder has a long life.

Further, since the main base 2 and the sub-base 5 are combined with each other by concave-convex fitting, it is possible to provide an inexpensive rotary encoder with a simple structure, good assemblability and low cost. Further, since the thin portion 4 is formed of an insulating material constituting the insulating base 1, its configuration is simple and inexpensive. Further, since the thin portion 4 is formed of a metal member buried in the insulating base 1, it is possible to provide a material that is strong against bending. In addition, since the contact piece 6 is embedded and attached to the insulating base 1 and the thin portion 4 is formed as a part of the contact piece 6, the contact piece 6 is durable against bending and can also be used as the thin portion 4. High productivity and low cost.

Further, on both sides of the main base 2, sub-bases 5 are provided, and contact pieces are attached to the sub-base 5, so that left and right circumferential surfaces of the rotating body 8 are provided. The contact piece 6 can be disposed on the rotary encoder, and a small rotary encoder with good contact can be provided. Further, since the code pattern 9b is provided on the outer circumferential surface of the rotating body 8, the arrangement of the contact pieces 6 is flexible, and a rotary encoder adapted to various modes can be provided. Further, a common pattern 9a that is electrically connected to the code pattern 9b is provided on one end surface 8e of the rotating body 8, and the common contact piece 7 provided on the main base portion 2 of the insulating base 1 is provided.
Is brought into contact with the common pattern 9a, so that the length of the rotating body 8 in the rotation axis direction can be reduced as compared with the conventional case, and a small-sized rotary encoder can be provided. Further, a click projection / recess portion 8d is formed on the other end surface 8c of the rotating body 8 opposed to the one end surface 8e, and a click mechanism is configured by engaging and disengaging the engaging member 10 with the projection / recess portion 8d. As compared with the conventional configuration in which the uneven portion 56a is provided in the direction of the rotation axis, the direction of the rotation axis can be further reduced, and a small-sized rotary encoder can be provided.

[Brief description of the drawings]

FIG. 1 is a front view of a rotary encoder according to the present invention.

FIG. 2 is a rear view of the rotary encoder according to the present invention.

FIG. 3 is a top view of the rotary encoder of the present invention.

FIG. 4 is a bottom view of the rotary encoder of the present invention.

FIG. 5 is an exploded perspective view of a rotary encoder according to the present invention.

FIG. 6 is a sectional side view of a main part of the rotary encoder of the present invention.

FIG. 7 is a sectional front view of a main part of the rotary encoder of the present invention.

FIG. 8 is a perspective view of a rotary encoder according to the present invention, in which an insulating base and a rotating body are combined.

FIG. 9 is a front view of the first embodiment of the insulating base according to the rotary encoder of the present invention.

FIG. 10 is a side view of the first embodiment of the insulating base according to the rotary encoder of the present invention.

FIG. 11 is a bottom view of the first embodiment of the insulating base according to the rotary encoder of the present invention.

FIG. 12 is an explanatory view showing a relationship between an insulating base and a contact piece according to the first embodiment in the rotary encoder of the present invention.

FIG. 13 is an explanatory view showing a method of manufacturing an insulating base according to the rotary encoder of the present invention.

FIG. 14 is a front view of a second embodiment of the insulating base according to the rotary encoder of the present invention.

FIG. 15 is a side view of a second embodiment of the insulating base according to the rotary encoder of the present invention.

FIG. 16 is a bottom view of a second embodiment of the insulating base according to the rotary encoder of the present invention.

FIG. 17 is an explanatory view showing a relationship between an insulating base and a contact piece according to a second embodiment of the rotary encoder of the present invention.

FIG. 18 is a front view of the first embodiment of the rotating body according to the rotary encoder of the present invention.

FIG. 19 is a side view of the first embodiment of the rotating body according to the rotary encoder of the present invention.

FIG. 20 is a back view of the first embodiment of the rotating body according to the rotary encoder of the present invention.

FIG. 21 is a cross-sectional side view of a first embodiment of the rotating body according to the rotary encoder of the present invention.

FIG. 22 is an explanatory view showing a method of manufacturing the rotating body and the cord member according to the first embodiment, relating to the rotary encoder of the present invention.

FIG. 23 is an explanatory view showing a method of manufacturing a rotating body and a cord member according to the first embodiment, relating to the rotary encoder of the present invention.

FIG. 24 is a sectional view taken along line 24-24 in FIG. 23;

FIG. 25 is an explanatory view showing a method of manufacturing a rotating body and a cord member according to the first embodiment, relating to the rotary encoder of the present invention.

FIG. 26 is a perspective view of a cord member according to the rotary encoder of the present invention.

FIG. 27 is a front view of a second embodiment of the rotating body according to the rotary encoder of the present invention.

FIG. 28 is a side view of a second embodiment of the rotating body according to the rotary encoder of the present invention.

FIG. 29 is a rear view of a second embodiment of the rotating body according to the rotary encoder of the present invention.

FIG. 30 is a sectional side view of a second embodiment of the rotating body according to the rotary encoder of the present invention.

FIG. 31 is a perspective view showing a method of attaching a rotating body and a cord member according to a second embodiment of the rotary encoder of the present invention.

FIG. 32 is a front view of the rotary encoder according to the present invention, showing a state where the rotating body and the code member according to the second embodiment are combined.

FIG. 33 is a side view of the rotary encoder according to the present invention, showing a state where the rotating body and the code member according to the second embodiment are combined.

FIG. 34 is a front view of an engagement member according to the rotary encoder of the present invention.

FIG. 35 is a top view of an engagement member according to the rotary encoder of the present invention.

FIG. 36 is a bottom view of an engagement member according to the rotary encoder of the present invention.

FIG. 37 is a sectional view taken along line 37-37 in FIG. 35;

FIG. 38 is a perspective view of a first embodiment of a mounting plate according to the rotary encoder of the present invention.

FIG. 39 is a front view of a first embodiment of the mounting plate according to the rotary encoder of the present invention.

FIG. 40 is a side view of the first embodiment of the mounting plate according to the rotary encoder of the present invention.

FIG. 41 is a bottom view of the first embodiment of the mounting plate according to the rotary encoder of the present invention.

FIG. 42 is a perspective view showing a state where the mounting plate of the first embodiment is mounted on the encoder main body in the rotary encoder of the present invention.

FIG. 43 is a fragmentary cross-sectional view showing a state where the mounting plate of the first embodiment is mounted on the encoder main body in the rotary encoder of the present invention.

FIG. 44 is a perspective view showing the mounting of the mounting plate of the first embodiment to the encoder main body in the rotary encoder of the present invention.

FIG. 45 is a front view of a second embodiment of the mounting plate according to the rotary encoder of the present invention.

FIG. 46 is a side view of a second embodiment of the mounting plate according to the rotary encoder of the present invention.

FIG. 47 is a rear view of a second embodiment of the mounting plate according to the rotary encoder of the present invention.

FIG. 48 is a perspective view showing a state in which the mounting plate of the second embodiment is mounted on the encoder main body in the rotary encoder of the present invention.

FIG. 49 is a rear view of the rotary encoder according to the present invention, showing a state where the mounting plate of the second embodiment is mounted on the encoder main body.

FIG. 50 is a side view of the rotary encoder according to the present invention, showing a state where the mounting plate of the second embodiment is mounted on the encoder main body.

FIG. 51 is a perspective view of a conventional rotary encoder.

FIG. 52 is an exploded perspective view of a conventional rotary encoder.

FIG. 53 is a cross-sectional view showing a state in which a contact piece is pressed against a rotating body in a conventional rotary encoder.

FIG. 54 is a cross-sectional view showing a state in which an elastic plate is pressed against a rotating body in a conventional rotary encoder.

FIG. 55 is a perspective view of a rotating body according to a conventional rotary encoder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulating base 2 Main base part 2a Depression 2b Convex part 2c Hook part 3 Side wall part 3a Flange part 3b Hole 3c Escape part 3d Upper wall part 3e Groove part 3f Hook part 3g Projection 4 Thin part 5 Sub base part 5a Convex part 5b Convex ridge part 6 Contact piece 6a Contact part 6b Terminal part 7 Common contact piece 7a Contact part 7b Terminal part 8 Rotating body 8a Shaft part 8b Holding part 8c End face 8d Uneven part 8e End face 8f Hole 8g Lock part 8h Groove 9 Cord member 9a Plate portion (common pattern) 9b Tongue piece (code pattern) 10 Engaging member 10a Base 10b Engaging portion 10c Hole 10d Side plate 10e Cut-and-raised portion 10f Locking portion 10g Upper edge plate 10h Hole 10j Lower edge plate 11 Mounting plate 11a hole 11b hole 11c flat plate portion 11d arm portion 11e hole 11f mounting portion 12 mounting plate 12a hole 12b hole 12c flat plate portion 12d arm portion 2e hole 12f mounting part 12g convex part 13 hole E1 encoder main body part P1 printed circuit board 21 metal plate 21a upper beam part 21b lower beam part 21c loop-shaped part 21d connecting part 21e connecting part 21f connecting part 21g connecting piece 21h connecting part 22 hole 23 Wire 25 metal plate 26 hole 27 hole 28 mold 29 mold 30 cavity 31 wire

Claims (9)

[Claims] 1. A rotatable cylindrical, cylindrical, or frustoconical rotator made of an insulating material, a code pattern provided on the outer surface of the rotator, A plurality of contact pieces attached to the base, wherein the insulating base includes a main base, a sub-base, and a thin-walled part connecting the main base and the sub-base. And
The insulating base is bent at the thin portion,
A rotary encoder, wherein the main base portion and the sub base portion are combined with each other, and the contact piece protrudes from the insulating base toward the rotating body in an upright state. 2. The rotary encoder according to claim 1, wherein the main base portion and the sub base portion are combined with each other by concave and convex fitting. 3. The thin portion is formed of an insulating material constituting the insulating base.
The rotary encoder as described. 4. The rotary encoder according to claim 1, wherein the thin portion is formed of a metal member embedded in the insulating base. 5. The rotary encoder according to claim 4, wherein said contact piece is buried and attached to said insulating base, and said thin portion is constituted by a part of said contact piece. 6. The sub-base portion is provided on both sides of the main base portion, and the contact piece is attached to the sub-base portion. A rotary encoder according to any of the above. 7. The rotary encoder according to claim 1, wherein the code pattern is provided on an outer circumferential surface of the rotating body. 8. A common pattern electrically connected to the code pattern is provided on one end surface of the rotating body, and a common contact piece provided on the main base portion of the insulating base contacts the common pattern. The rotary encoder according to claim 6 or 7, wherein 9. A click mechanism is formed on the other end face of the rotating body facing the one end face, and a click mechanism is formed by engaging and disengaging an engaging member with the click section. The rotary encoder according to claim 8, wherein: