JPH11353977A - Rotary switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary switch, which can be easily assembled, and whose assembling work can be easily mechanized. SOLUTION: A switch operation part is attached to a switch main body 2 such that turn operation is freely. The switch main body 2 is provided with a pair of contact parts which can be freely connected to or disconnected from a relay terminal provided in the switch operation part. One contact part 130 of both contact parts is integrally formed with a crimp part 140 for crimping and retaining an end part of a lead wire 90 which electrically connects the contact part 130 to a prescribed external circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary switch used for general electric equipment and the like.

[0002]

2. Description of the Related Art Conventionally, as a rotary switch of this kind,
There is a configuration as shown in FIG.

[0003] This rotary switch comprises a switch body 1
50 and a switch operation unit 160.

[0006] A shaft 162 is vertically provided on the switch operation section 160 from the center of the lower surface of the top plate section downward. The switch body 150 is formed in a substantially circular flat plate shape, and a hole 151 through which the shaft 162 can be inserted is formed at the center thereof. Then, the shaft 162 is inserted from above the hole 151, and a retaining ring 168 is attached to the tip of the shaft 162 protruding below the hole 151.
At 0, it is mounted to be freely rotatable between a predetermined contact open position and a predetermined contact closed position.

The rear portion of the switch main body 150 is formed to be thick, and the upper surface thereof is a guide surface 156 which is appropriately finished with an uneven surface. Then, the switch operation unit 160
In a state where is mounted on the switch body 150, the rolling element 184 is resiliently urged to the guide surface 156 via the coil spring 186, whereby the switch operating section 160 is turned to the contact open position or the contact closed position side. It is configured to be energized.

[0006] An enclosure wall 152 is formed at the front of the upper surface of the switch body 150, and an attachment plate 170 is attached so as to close the opening of the enclosure wall 152. A short columnar contact portion 176 is provided on the mounting plate 170 at a predetermined interval.
A, 176B is attached. And this mounting plate 17
On the lower surface side of the contact 0, a ground terminal 178 is connected to the contact 176A on one side, and the contact 1
The lead wire 180 is connected to 76B. The ground terminal 178 is soldered to a contact portion 176A via a contact piece 179 formed integrally with the ground terminal 178. Also, the lead wire 180 has an exposed portion 180a of the core wire exposed at its end.
Is soldered to the contact portion 176B via the soldering terminal 182. The lead wire 180 is connected to the surrounding wall 1.
52 is drawn out through an outlet groove 153 formed in one side of the cutout 52, a terminal 181 is connected to the end drawn out, and an external predetermined electric circuit is connected through the terminal 181. It is configured to be connected to

Further, the switch operating section 160 and the mounting plate 1
A substantially U-shaped relay terminal 190 is provided between 70.
The relay terminal 190 is urged downward via the coil spring 194 in a state where the upright pieces 191 at both ends of the relay terminal 190 are inserted into the lower surface of the switch operation unit 160 and positioned. It is driven to rotate.
When the switch operation unit 160 is rotated to the contact closing position, the relay terminal 190 is connected to both contact portions 176A,
176B is contacted and conduction is obtained between them, while
When the switch operation section 160 is rotated to the contact open position, the relay terminal 190 is not in contact with the contact sections 176A and 176B, and the conduction between them is cut off.

[0008]

However, according to the rotary switch described above, the exposed portion 180a at the end of the lead wire 180 and the contact portion 176B are connected by soldering. There is a problem that assembly of the switch is difficult. In addition, there is a problem that such a soldering process is difficult to mechanize and it is difficult to reduce costs.

The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a rotary switch that can be easily assembled and can be easily mechanized.

[0010]

According to a first aspect of the present invention, there is provided a rotary switch according to the first aspect, wherein a switch operating portion is provided on a switch body with a predetermined contact opening position and a predetermined contact centered on a predetermined rotation axis. A rotary switch rotatably operated between closed positions, wherein a relay terminal having contacts at both ends is provided on the switch operation unit side, and the switch operation unit is provided on the switch body unit side. Are in contact with the respective contacts in a state in which the contacts are rotated to the contact closed position, and are in non-contact with the respective contacts in a state in which the switch operating portion is rotated in the contact open position. A pair of contact portions is provided at a position, and a crimp portion for crimping and holding a lead wire end for electrically connecting the contact portion to an external predetermined electric circuit is provided on at least one of the contact portions. It is body formation.

Further, the rotary switch according to claim 2 is
A switch body having an enclosing wall formed on an upper surface thereof, and a switch-shaped body which is rotatably mounted on the switch body so as to close an opening of the enclosing wall between a predetermined contact open position and a predetermined contact closed position. A switch operation part, a relay terminal provided on the switch operation part side and having contacts at both ends, and the switch operation part being turned to the contact closed position on the inner peripheral surface of the surrounding wall of the switch body part. A pair of switches provided at respective positions that are in non-contact with the respective contacts in a state where the respective switches come into contact with the respective contacts in a state where the contacts are operated and the switch operation unit is rotated to the contact open position. A crimping portion for crimping and holding the end of the lead wire is formed integrally with the contact portion on one side, and a lead wire crimped to the crimping portion is cut out on one side of the surrounding wall. Through the drawn outlet groove Drawn out, extended terminal portion to the contact portion of the other side is disposed so as to expose the lower portion thereof through its extension 設端Ko portion bottom surface of the switch main body while being integrally formed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rotary switch according to an embodiment of the present invention will be described below.

The rotary switch is interposed, for example, in a grounding circuit for stopping the operation of the generator motor in a magnet ignition device of the generator motor by grounding the primary circuit to ground. It is used.

In the following description, ON and OFF mean the operation and stop of the generator motor, so that the internal contacts are opened when the switch is on, and the internal contacts are closed when the switch is off. It has become.

As shown in FIGS. 1 to 4, the rotary switch comprises a switch body 2 having a substantially disk-shaped circular base 10 in plan view and a flange 4 extending to one side in front of the base. And a circular switch operation unit 50 having an opening.

The switch operating section 50 is rotatably mounted on the switch main body 2 about a predetermined rotation axis Y extending vertically.

That is, the switch body 2 is provided with
As shown in FIG. 8, a pair of arc-shaped guide holes 11 and 14 are formed on the front and rear peripheral edges of the circular base 10 so as to face each other. Each of the arc-shaped guide holes 11 and 14 is formed in an arc shape having a predetermined length with the predetermined rotation axis Y as a center of curvature.

On the other hand, the switch operation unit 50 is provided in FIGS.
As shown in FIG. 1, a pair of extending pieces 60, 60 are formed corresponding to the arc-shaped guide holes 11, 14, respectively, from the front and rear regions of the lower peripheral edge of the opening.

The extending pieces 60, 60 are inserted into the corresponding arc-shaped guide holes 11, 14, respectively, from above, so that the extending pieces 60, 60 are respectively inserted into the arc-shaped guide holes 11, 14. , 14 are slidably guided. As a result, the switch operating section 5 is moved between the on position A and the off position B where the extending pieces 60 abut on both ends of the arc-shaped guide holes 11 and 14 (see FIG. 1).
0 is rotatably supported by the switch body 2. Here, the ON position A means a contact opening position at which the internal contact opens, and the OFF position B means a contact closing position at which the internal contact closes.

The lower ends of the extending pieces 60, 60
The retaining portions 61 are formed so as to protrude toward the outer peripheral side. Tapered surfaces 62, 62 inclined upward toward the outer peripheral side are formed on the lower surface side of the retaining portions 61, 61, and the sliding contact step portions 63, 62 are formed on the base end side of the upper surface.
63 is formed (see FIG. 10).

On the other hand, the circular base 10 on the switch body 2 side
A protruding ridge 12 is formed on the outer peripheral side along the front arcuate guide hole 11 so as to protrude downward, and a lower portion of the outer peripheral wall is formed in the rear arcuate guide hole 14. A notch groove portion 15 is formed along (see FIG. 8).

Each of the extending pieces 60, 60 is
In the state of being inserted through the first and the second stoppers 14,
The sliding contact steps 63, 63 of the projection 61 have the lower surface 12a of the ridge 12 of the arc-shaped guide holes 11, 14 and the notch groove 15, respectively.
Is slidably engaged with the bottom surface 15a of the switch body 2 so as to prevent the switch operation unit 50 from being removed from the switch body 2.

The positions excluding both ends of the arc-shaped guide holes 11 and 14, that is, the positions slightly shifted clockwise from the left-hand ends of the arc-shaped guide holes 11 and 14 in FIGS. In FIG. 5, escape recesses 13 and 16 are cut out in a predetermined length on the inner peripheral edge of each of the arc-shaped guide holes 11 and 14 (positions slightly shifted leftward from the clockwise ends). You. An enclosing wall 20 is formed along the circumferential direction on the inner peripheral side of the arc-shaped guide hole 11 on the upper surface of the circular base 10 as described later, and the escape recess 13 on the front side is formed by the enclosing wall 13. 20 are also formed continuously on the outer peripheral surface side.

Further, tapered guide grooves 11a and 14a are formed on the upper side of the outer peripheral wall surfaces of the arc-shaped guide holes 11 and 14 at positions facing the escape recesses 13 and 16, respectively. 5 and FIG. 8). Each of the tapered guide grooves 11a and 14a is formed to have substantially the same width dimension as each of the recessed recesses 13 and 16, and the lower part thereof is finished as a tapered surface inclined inward downward.

When the extending pieces 60, 60 are to be inserted into the arc-shaped guide holes 11, 14, respectively, the respective tapered surfaces 62, 62 are formed in the tapered guide grooves 11a, 14a.
The extension pieces 60, 60 are inserted into the arc-shaped guide holes 11, 14 in such a manner as to be pressed against a. Then, the respective tapered surfaces 62, 62 and the tapered guide groove portions 11a, 14a
, The extension pieces 60, 60 are bent inward so as to escape into the escape recesses 13, 16, respectively. Further, when the extension pieces 60, 60 are inserted downward while being guided by the taper guide grooves 11a, 14a, respectively, the respective tapered surfaces 62 extend over the outer peripheral wall surfaces of the arc-shaped guide holes 11, 14, respectively. The pieces 60, 60 are elastically restored, whereby the sliding contact step portions 6 of the retaining portions 61, 61 are formed.
Reference numerals 3 and 63 denote lower corner portions of the peripheral edge portions of the arc-shaped guide holes 11 and 14, that is, the lower surface 12 a of the ridge 12 of the arc-shaped guide holes 11 and 14 and the bottom surface 15 a of the notch groove 15.
, The switch operation unit 50 is attached to the switch body 2 in a retaining shape.

As described above, when the switch operating section 50 is attached to the switch main body 2, each of the extension pieces 60, 6
0 is rotatable between positions where it contacts the opposite ends of the arc-shaped guide holes 11 and 14, respectively. In addition, each extension piece 6
In a state where the reference numerals 0 and 60 are in contact with the clockwise ends of the respective arc-shaped guide holes 11 and 14 (see FIG. 3), the switch operation unit 50 is provided.
Is located at the ON position A, and an indicator 53 at the front of a knob 52 formed on the outer peripheral surface of the switch operating portion 50 from the front side to the rear side is marked “ON” on the right side of the upper surface of the collar portion 4. The display 5 is indicated (see FIG. 1). on the other hand,
When the extending pieces 60, 60 are in contact with the counterclockwise ends of the arc-shaped guide holes 11, 14, the switch operating unit 50 is in the off position B, and the indicator 5 of the switch operating unit 50 is in the off position B.
3 is an “OFF” display 6 written on the left side of the upper surface of the collar 4
(See FIG. 1).

At this time, the escape recesses 13 and 16 are formed at positions except for both ends of the arc-shaped guide holes 11 and 14, respectively. Therefore, even when the switch operation unit 50 is at the on position A or the off position B, The switch operation unit 50 is hard to be removed from the switch main unit 2.

As shown in FIG. 3, FIG. 6, FIG. 7, and FIG. 13, a lower surface on the right end side of the rear arc-shaped guide hole portion 14;
That is, in FIGS. 3 and 7, a foreign matter discharge groove 48 having a predetermined depth is formed on the lower surface on the right end side of the arc-shaped guide hole 14. The foreign matter discharge groove 48 is formed in a portion extending from the right end of the arc-shaped guide hole 14 to the outer peripheral edge obliquely right behind the circular base 10.
5a. Accordingly, for example, when foreign matter such as mud or snow is clogged in the arc-shaped guide hole portion 14, the foreign material is moved by the extended piece 60 along with the rotation operation of the switch operation portion 50. 14 is discharged to the outside through the foreign substance discharge groove 48 by being pushed to the right end side, so that the switching operation of the switch operation unit 50 is performed smoothly.

An arc-shaped guide groove 29 is formed along the circumferential direction at a portion from the arc-shaped guide hole 11 to the arc-shaped guide hole 14 on the right peripheral edge of the circular base 10 of the switch body 2. At the same time (see FIG. 5), an arc-shaped guide ridge 59 movable in the arc-shaped guide groove 29 is formed at the lower opening peripheral edge of the switch operation unit 50 (see FIG. 11). When the switch operating unit 50 is attached to the switch main body 2, the arc-shaped guide ridges 59 move in the guide grooves 29.
The rotation operation of the switch operation unit 50 is guided.

On the inner peripheral side of each of the arc-shaped guide holes 11 and 14 on the upper surface of the circular base 10 of the switch main body 2, an enclosing wall 20 surrounding a contact structure to be described later is substantially entirely formed along the circumferential direction. It is formed over the circumference.

The rear side of the enclosing wall 20 is formed in a concave wall portion 21 which is depressed inward (see FIG. 5). On the front side of the intermediate portion of the concave wall portion 21, a concave groove portion 2 is formed along the vertical direction.
3 and a main body-side small projection 24 having a triangular horizontal cross section is formed from the upper end side to the lower end side of the groove 23.

The outer peripheral side of the concave wall portion 21 is
The elastic piece 25 is formed so as to extend between both ends of the elastic piece 25. The elastic piece 25 is formed such that only both ends are integrally formed at both ends of the concave wall portion 21, and the intermediate region is in a state of floating above the circular base 10. It is configured to be able to bend and deform to the peripheral side and the outer peripheral side.

The central portion of the elastic piece 25 is formed as a main-body-side protruding portion 26 which protrudes rearward (outward) in a U-shape. The main-body-side protruding portion 26 is finished in a shape that is larger and gentler than the protruding shape of the main-body-side small protruding portion 24.

On the other hand, the rear end portion of the peripheral wall portion 55 of the switch operation portion 50 is formed to be partially thick, and the sliding contact flat portion 7 is formed here.
5 are formed (see FIGS. 4 and 11). At a substantially central portion of the sliding contact flat portion 75, a gentle and large mountain-shaped operation portion side projecting portion 76 is formed.

When the switch operating section 50 attached to the switch main body 2 is rotated, as shown in FIG. 12, the main body side protruding portion 26 is moved to the operating portion side protruding portion 76.
The switch operation unit 50 is urged to rotate to the ON position A side or the OFF position B side.

That is, when the switch operating section 50 is at the ON position A, the operating section side protruding section 76 is at the position shown by the dashed line in FIG. When the switch operation unit 50 is at the off position B, the operation unit side protrusion 76 is
At the position shown by the broken line. Then, the switch operation unit 50
Is between the ON position A and the intermediate position between the ON position A and the OFF position B, the main body side protruding portion 26 rides on the operation portion side protruding portion 76 and the elastic piece 25 is elastically deformed inwardly. Then, due to this elastic return force, the switch operation unit 50
Is rotationally biased toward the ON position A. On the other hand, when the switch operation unit 50 is located between the intermediate position between the ON position A and the OFF position B and the OFF position B, the main unit side protruding portion 26 rides on the operation portion side protruding portion 76, contrary to the above. Upon receiving the elastic restoring force of the elastic piece 25, the switch operation unit 50 is rotationally biased to the off position B side.

For example, when the switch operation unit 50 is set to the ON position A
When switching from the position A to the off position B, the switch operation unit 50 is first rotated from the on position A to a middle position between the on position A and the off position B against the urging force of the elastic piece 25. Then, the main body side projecting portion 26 is moved to the operation portion side projecting portion 76.
When you get over the center (top) of the
Is turned to the off position B side by receiving the elastic force of the elastic piece 25, and in this state, the switch operating section 50
To the off position B. The switch operation unit 5
When 0 is switched from the off position B to the on position A, the operation is the reverse of the above operation.

Further, a sliding contact extending piece 70 is vertically provided inside the switch operation section 50 at a position slightly deviated backward from the rotation axis Y (see FIG. 11). The sliding contact extending piece 70 is formed so as to be able to bend and deform on the inner peripheral side and the outer peripheral side, and has a triangular horizontal cross section capable of slidingly contacting the main body side small protruding portion 24 at a substantially central position on the rear surface thereof in the vertical direction. An operation-portion-side small protrusion 72 having a shape is formed.

The small projection 72 on the operation part side is configured to be in sliding contact with the small projection 24 on the main body side when the switch operation part 50 is at a substantially intermediate position between the ON position A and the OFF position B. .

For example, when the switch operation unit 50 is set to the ON position A
When the switch operation unit 50 is rotated to the vicinity of the intermediate portion between the ON position A and the OFF position B when switching from the position to the OFF position B, first, the operation unit side small protrusion 72 and the main unit side small protrusion 24 Are in sliding contact with each other, and the sliding contact extension piece 70 is elastically deformed toward the inner peripheral side (the rotation axis Y side). When the switch operating portion 50 is further rotated to the off position B side against the elastic restoring force of the sliding contact extension piece 70, the operating portion side small protrusion 72 rides over the main body side small protrusion 24 and slides. The extension piece 70 returns to its original shape. Thereafter, the switch operation unit 50 is rotated to the off position B without being affected by the rotational urging force of the operation unit side small protrusion 72 and the main body unit small protrusion 24.

In FIG. 14, the rotational urging force F received by the switch operating section 50 due to the elastic contact between the main body side projection 26 and the operation section side projection 76 is represented by a curve R, and the operation section side small projection 72 and the main body side Curve S shows the rotational urging force F received by the switch operating unit 50 due to the elastic contact of the small protrusion 24.

As shown by the curve R in the figure, the former rotational urging force F acts gently over the entire area between the ON position A and the OFF position B with a peak at the intermediate position between the ON position A and the OFF position B. Further, as shown by the curve S, the latter rotational urging force F acts sharply only near the intermediate portion between the ON position A and the OFF position B with the peak at the intermediate position between the ON position A and the OFF position B.

Therefore, the switch operation unit 50 is turned on to the ON position A.
To the off position B or vice versa,
The rotation urging force obtained by combining these curves S and R acts on the switch operation unit 50. That is, as shown in a curve T (a composite curve of the curve S and the curve R) in FIG.
Over the entire area between the position A and the position B, a force for rotationally biasing toward the on position A or the position B off from the intermediate position thereof is applied, and a large rotational biasing force is applied near the intermediate portion thereof. Become.

As described above, the gently mountain-shaped main body-side protruding portion 26 and the operation portion-side protruding portion 76 formed on the switch main body 2 and the switch operation portion 50 are slidably elastically contacted with each other. By urging the switch operation unit 50 to the return position to the ON position A side or the OFF position B side, the switch operation unit 50 is turned to the ON position A side and the OFF position B side.
Side, the main body side small protrusion 24 and the operation part side small protrusion 72 of small protrusion shapes formed on the switch body 2 and the switch operation part 50, respectively. When the switch operation unit 50 is switched, the ON position A and the OFF position B are set so as to be slid in contact with each other at an intermediate position between the ON position A and the OFF position B.
A large rotational urging force is applied at an intermediate position between the ON position A and the OFF position B so that a clear switching feeling can be obtained when the switch operation unit 50 is switched. To prevent such things from happening.

The main body-side protruding portion 26 and the main body-side small protruding portion 24 on the switch main body 2 side are connected to the switch operating portion 5.
The switch operation unit 50 is attached to the switch main body 2 because the operation unit side protruding portion 76 and the operation portion side small protruding portion 72 are located at positions sandwiched from the inner peripheral side and the outer peripheral side. In this state, rattling between the switch operation unit 50 and the switch main body 2 is prevented.

A pair of contact points 120 and 130 are provided in the surrounding wall 20 of the switch body 2 so as to face each other (see FIGS. 5, 17 and 18). Are provided with arc-shaped relay terminals 80 (see FIGS. 11 and 23).

The contact part 120 on one side is connected to each of FIGS.
As shown in the figure, the mounting portion is mounted in a contact portion mounting recess 100 formed on one side of the left side of the inner peripheral surface of the surrounding wall 20.

The contact portion 120 is formed by vertically connecting a contact contact portion 121 and an extended terminal portion 128 via a narrow connecting portion 127. The contact contact portion 121 is formed in a substantially rectangular flat plate shape, and a step portion 122 is formed at a substantially middle position in the vertical direction of a front side portion thereof. In addition, the contact contact portion 12
The detent pieces 123 having slopes 123a and 124a that are inclined upward and outward, respectively, at the front side and the lower side of the step 122 and the upper side of the rear side, respectively. 124 are formed. Further, a ridge portion 125 is press-formed along a vertical direction at a portion along one front side of one surface of the contact contact portion 121. The extended terminal portion 128 is formed in a plate shape slightly curved so as to follow the outer peripheral surface shape of the peripheral mounting portion 30 (see FIGS. 2, 3 and 4) formed on the lower surface of the switch main body 2. It is finished.

On the other hand, the contact portion mounting concave portion 100 is
0 is formed in a concave shape capable of accommodating the contact contact portion 121 on the inner peripheral surface side, and the contact contact portion 12 is formed on the rear side thereof.
1 is formed with a mounting groove 101 capable of holding the rear side portion. A holding piece 102 is formed on the inner peripheral surface of the surrounding wall 20 and at a position on the front side of the contact portion mounting recess 100,
The holding piece 102 and the inner surface 100 of the contact portion mounting recess 100
A mounting groove 103 capable of sandwiching the front side of the contact contact portion 121 is formed between the mounting groove 103 and the contact groove 121a. The holding piece 102
The upper end surface of the step portion 102 can be brought into contact with the step portion 122 in a state where the contact portion 120 is attached to the contact portion attaching concave portion 100.
a. Further, the contact portion mounting recess 100 is provided on the bottom surface 2a in the surrounding wall 20 of the switch body 2.
, A through hole 104 penetrating downward continuously is formed. The lower opening of the through hole 104 is
(See FIG. 3).

The contact portion mounting recess 100 of the contact portion 120
Attachment is performed as follows.

That is, the contact portion 120 is inserted into the contact portion mounting recess 100 from above with the vertical position in which the extension terminal portion 128 is disposed on the lower side. Then, the rear side of the contact contact portion 121 is inserted into the mounting groove 101, the front side of the contact contact portion 121 is inserted into the mounting groove 103, and the extended terminal portion 128 is inserted. Is inserted into the through hole 104. Further, when the step 122 on the side of the contact contact portion 121 is pushed downward until it contacts the step 102a on the side of the contact portion mounting recess 100, the ridge portion 1 of the contact contact portion 121 is pressed.
25 is press-fitted and held in the mounting groove 103, and the detent pieces 123 and 124 are engaged so as to bite into the bottom surfaces of the mounting grooves 103 and 101, respectively. It is attached to the part attachment concave portion 100 in a retaining shape. At this time, the extension terminal portion 128
Projecting downward through the through-hole 104, the peripheral mounting portion 30
(See FIG. 3).

As shown in FIGS. 5 and 18, the contact portion 130 on the other side is attached to a portion of the right side of the surrounding wall 20 where the outlet groove 110 of the lead wire 90 is formed.

The contact portion 130 comprises a contact contact portion 131 and a crimping portion 140, as shown in FIGS.

The contact contact part 131 has a substantially L
A step portion 132 is formed at a substantially middle position in the vertical direction of the side portion on the rear side. In addition, detent pieces 133, 1 having inclined surfaces 133a, 134a that are inclined upward and outward, respectively, are located above the front side of the contact contact portion 131 and below the rear side.
34 are formed. Further, at the position along the front side of one side of the contact contact portion 131 and the lower position along the rear side of the contact contact portion 131, the ridge 135,
136 is press formed.

The crimping portion 140 is formed so as to protrude from the lower end of the horizontal portion of the contact contact portion 131 in a direction perpendicular to one surface of the contact contact portion 131 (inside the surrounding wall 20). The crimping portion 140 includes a covering portion holding portion 142 formed of a pair of holding pieces 142a extending downward at a central portion in the longitudinal direction thereof, and a pair of extending portions extending downward at its distal end. And an exposed portion crimping portion 144 made of a crimping piece 144a. Then, the lead wire 90 having the exposed portion 90 a of the core wire formed at the end by peeling the coating layer is attached to the crimping portion 1.
In this state, each holding piece 142a is bent inward to be exposed to the exposed portion 9.
The covering portion of the lead wire 90 near 0a is covered with the covering portion holding portion 142.
While crimping each crimp piece 144a inward to crimp and hold the exposed portion 90a at the end of the lead wire 90 to the exposed portion crimp portion 144. It is configured to make mechanical and electrical connections.

The outlet groove 110 is formed by cutting off one side of the right side of the surrounding wall 20 to a portion reaching the bottom surface 2a of the switch body 2 and extending to the vicinity of the right outer peripheral edge of the switch body 2. Then, an outlet 145 for extracting the lead wire 90 is formed on an extension of the outlet groove 110. The front side edge of the contact contact portion 131 along the vertical direction is formed along the vertical direction at the notch end surface on the front side of the surrounding wall 20 facing the outlet groove 110 and extending from above to a substantially middle position in the vertical direction. A mounting groove 111 that can be held is formed. A holding piece 112 is formed on the inner peripheral surface side of the surrounding wall 20 and at a position behind the outlet groove 110.
A mounting groove 113 is formed between the inner wall 2 and the inner peripheral surface of the surrounding wall 20 so that the lower part of the rear side of the contact point 131 can be clamped. Note that the upper end surface of the mounting piece 112 is
Step 11 that can be brought into contact with the step 132 with the
2a.

In order to attach the contact portion 130 to the outlet groove 110, the following procedure is performed.

That is, the contact portion 130 in which the end of the lead wire 90 is attached to the crimping portion 140 is placed in such a manner that the crimping portion 140 is arranged below and the inside of the surrounding wall 20 is oriented.
The front side and the rear side of 31 are respectively provided with mounting grooves 111,
Insert from above into 113. Further, the step 132 on the side of the contact contact 131 is replaced with the step 112a on the side of the mounting piece 112.
When the contact portion 130 is pushed down to a position where the contact portion comes into contact with the contact grooves 131, the front and rear side portions of the contact contact portion 131 including the ridges 135 and 136 are respectively attached to the mounting grooves 111 and 1.
13 while being pressed and held in
133 are engaged so as to bite into the bottom surfaces of the mounting grooves 111 and 113, respectively, so that the contact portion 130 is attached to the surrounding wall 20 in a retaining shape. At this time, the crimping portion 140 is in a posture supported in a cantilever manner in a horizontal posture from the surrounding wall 20 toward the inside thereof, and the lead wire 90 crimped to the crimping portion 140 is moved from below the crimping portion 140. It is configured to be drawn out of the switch body 2 through the outlet groove 110 and the outlet 145.

The outlet groove 110 is formed on the bottom surface 1.
10a is finished to a depth dimension substantially matching the upper surface of the circular base 10 in the surrounding wall 20 and the outlet groove 110
A drain hole 110b penetrating through the lower surface of the circular base 10 at a position outside the enclosing wall 20 is formed in the bottom surface 110a (see FIGS. 5, 160, and 18).

For example, the switch main body 2 is disposed below the switch operation section 50, and the rotary switch is mounted on a generator motor or the like in an inclined posture with the right side in FIGS. When mounted on the panel, even if water may enter the surrounding wall 20, the water is discharged from the outlet groove 110 to the outside through the drain hole 110b. It is.

The connection terminal 9 is connected to the other end of the lead wire 90 extending from the switch body 2 for connection to another terminal.
1 is attached, and a waterproof rubber plug 92 is attached to a portion where the connection terminal 91 and the lead wire 90 are attached (see FIG. 1).

On the other hand, the arc-shaped relay terminal 80 has its intermediate portion sandwiched between a pair of inner circumferential arc pieces 84 and outer circumferential arc pieces 83 which are vertically provided at the front lower surface inside the switch operation section 50 (see FIG. 4). 11 and 23).

The inner peripheral side arc-shaped piece 84 and the outer peripheral side arc-shaped piece 83
Are each formed in an arc shape with the rotation axis Y of the switch operation unit 130 as the center of curvature, and the outer circumferential side arc piece 83 is formed longer than the inner circumferential side arc piece 84 in the circumferential direction thereof. I have. Further, the inner peripheral side arc-shaped piece 84 and the outer peripheral side arc-shaped piece 83 are arranged side by side along an imaginary peripheral surface centered on the rotation axis Y with an interval capable of holding the arc-shaped relay terminal 80 therebetween. . A distal end surface, which is the lower surface of the inner peripheral side arc-shaped piece 84, has an inner peripheral side arc-shaped piece 84
A notch groove portion 84a extending in a direction intersecting with the circular arc direction is formed, and an engagement piece 82a of an arc-shaped relay terminal 80 described later can be fitted and engaged in the notch groove portion 84a.

The arc-shaped relay terminal 80 is formed in a substantially arc shape by a metal spring material or the like, and both end portions thereof are bent inward to form the contact contact portions 1 of the contact portions 120 and 130.
The contacts 81, 81 which can be elastically contacted with the members 21, 131 are finished. Then, in a state where these two contacts 81, 81 are exposed from between both ends of the inner peripheral side arc-shaped piece 84 and the outer peripheral side arc-shaped piece 83, the intermediate portion of the arc-shaped relay terminal 80 is connected to the inner peripheral side arc-shaped piece 84 and The arc-shaped relay terminal 80 is configured to be mounted in the switch operation unit 50 by being pressed and held between the outer-circumference-side arc-shaped pieces 83.

Further, at an intermediate position in the longitudinal direction of the arc-shaped relay terminal 80, a protruding piece extending from a lower edge portion thereof is bent at substantially a right angle toward the inside thereof so as to engage with the engaging groove portion 84a. A mating engagement piece 82a is formed, and a protruding piece extending from a position on the upper edge of the arc-shaped relay terminal 80 and sandwiching the inner circumferential arc-shaped piece 84 from both ends in the circumferential direction is used. By bending inward at a substantially right angle, a pair of engaging pieces 82b, 82b capable of engaging with both side edges of the inner peripheral side arc-shaped piece 84 are formed.

Then, as described above, the arc-shaped relay terminal 80
Is held between the inner peripheral side arc-shaped piece 84 and the outer peripheral side arc-shaped piece 83, the engaging piece 82a fits into the engaging concave groove portion 84a of the inner peripheral side arc-shaped piece 84, and The piece 82b is configured to engage with both side edges of the inner peripheral side arc-shaped piece 84 to position (stop) the arc-shaped relay terminal 80 in the circumferential direction. Thus, for example, when the switch operation unit 50 is rotated, the arc-shaped relay terminals 80
Contact 81 comes into contact with contact contact portions 121 and 131,
Even if a force is applied to the arc-shaped relay terminal 80 to displace the arc-shaped relay terminal 80 in the circumferential direction, the engagement between the engagement piece 82a and the notch groove portion 84a and the engagement between the engagement pieces 82b and the inner peripheral arc-shaped piece are performed. The engagement with the both side edges of 84 prevents the arc-shaped relay terminal 80 from being displaced in the circumferential direction, so that a more reliable switch operation can be performed.

When the switch operating section 50 is attached to the switch main body 2, the contacts 81, 81 at both ends of the arc-shaped relay terminal 80 are configured to elastically contact the inner peripheral surface of the surrounding wall 20. When the switch operation unit 50 is located at the off position B, as shown by the broken lines in FIG. 12, the two contacts 81 are connected to the contact contacts 121 and 131, respectively.
The contact between the contact points 120 and 130 is obtained through the arc-shaped relay terminal 80. When the switch operating unit 50 is rotated to the ON position A, the arc-shaped relay terminal 80 rotates clockwise, and as shown by the dashed line in FIG. ,
131 to a non-contact position with the contact point 131.
It is configured such that conduction between the terminals 20 and 130 is interrupted.

The lower end of the circular base 10 of the switch body 2 has a circumferential mounting portion 30 formed in a substantially circular wall shape.
Is formed (see FIGS. 7 and 8). This peripheral mounting portion 30
Is for mounting on a device in which this switch is used, and a mounting piece 32 having an engaging portion 31 on the front end side is protruded toward the lower surface side in the front and rear regions (see FIG. 5). .

When the rotary switch is mounted on a panel such as a generator motor, the circumferential mounting portion 30 is fitted into a mounting hole formed in the panel, and the mounting piece 32 is engaged with the mounting hole. The fitting is performed by engaging the joint portion 31. On this occasion,
The extended terminal portion 128 (see FIG. 7) of the contact portion 120 protruding along the outer peripheral surface of the peripheral mounting portion 30 comes into contact with the contact portion provided on the mounting hole side of the panel.
20 is configured to be electrically connected to a predetermined electric circuit such as a generator motor. Further, the connection terminal 91 is connected to a terminal separately provided on the panel or the like, whereby the contact portion 130 is electrically connected to a predetermined electric circuit such as a generator motor.

According to the rotary switch configured as described above, the contact 130 provided on the switch body 2 side
The crimping part 140 is formed integrally with the crimping part 140, and the lead wire 90 is electrically and mechanically connected to the crimping part 140, so that the end of the lead wire 90 and the contact part 110 are connected by the crimping. Therefore, the rotary switch can be easily assembled. Also, as described above, the crimping portion 1
The operation of crimping the lead wire 90 to the terminal 40 also has an effect that the mechanization is easier as compared with a conventional configuration using soldering.

Further, by attaching the contact portion 130 to which the lead wire 90 has been crimped in the region where the outlet groove 110 is formed in the surrounding wall 20, the contact portion is drawn in a state where the lead wire 90 is drawn out from the outlet groove 110. The part 130 is the surrounding wall 20
In this respect, the rotary switch can be easily assembled in this point.

An extended terminal portion 128 is formed integrally with the contact portion 120 on the other side, and the extended terminal portion 128 is provided so as to penetrate the bottom surface 2a of the switch main body 2 and protrude downward therefrom. Therefore, when assembling the rotary switch, it is only necessary to penetrate the contact portion 120 through the switch body 2, and in this respect, the assembly can be easily performed and the mechanization of the assembly can be easily performed. can get.

[0073]

As described above, according to the rotary switch of the first aspect of the present invention, the contact portion is provided on at least one of the pair of contact portions provided on the switch body. Since the crimping portion for crimping and holding the end of the lead wire electrically connected to an external predetermined electric circuit is integrally formed, the connection between the end of the lead wire and the contact portion can be performed by crimping. In addition, the rotary switch can be easily assembled and the assembly can be easily mechanized.

According to the rotary switch according to the second aspect of the present invention, a crimping portion for crimping and holding the end of the lead wire is formed integrally with one contact portion and crimped to the crimping portion. Since the lead wire is drawn out through an outlet groove cut out on one side of the surrounding wall, the end of the lead wire is crimped to the crimping portion during assembly of the rotary switch. Since the wire only needs to be drawn out through the outlet groove, the assembly can be easily performed and the assembly can be easily mechanized. Further, an extended terminal portion is formed integrally with the contact portion on the other side, and the extended terminal portion is provided so as to penetrate the bottom surface of the switch main body portion and be exposed at a lower portion thereof. At the time of assembling the switch, it is only necessary to penetrate the contact portion into the switch main body. In this respect, the effect that the assembling can be easily performed and the mechanization of the assembling becomes easy can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing a rotary switch according to an embodiment of the present invention.

FIG. 2 is a side view showing the rotary switch according to the first embodiment;

FIG. 3 is a bottom view showing the rotary switch according to the first embodiment;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 1;

FIG. 5 is a plan view showing a switch body.

FIG. 6 is a side view showing a switch body.

FIG. 7 is a bottom view showing the switch body.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 5;

FIG. 9 is a plan view showing a switch operation unit.

FIG. 10 is a side view showing a switch operation unit.

FIG. 11 is a bottom view showing a switch operation unit.

FIG. 12 is a plan view for explaining an operation state when the switch operation unit rotates.

FIG. 13 is an enlarged perspective view of a main part showing a foreign matter discharge groove.

FIG. 14 is a diagram illustrating an urging force that acts when the switch operation unit rotates.

FIG. 15 is a diagram illustrating a combined biasing force that acts when the switch operation unit rotates.

FIG. 16 is an enlarged perspective view of a main part showing an outlet groove.

FIG. 17 is an exploded perspective view showing an attached state of a contact portion on one side.

FIG. 18 is an exploded perspective view showing a mounting state of a contact portion on the other side.

FIG. 19 is a plan view showing a contact portion.

20 is a left side view of the contact portion shown in FIG.

21 is a bottom view of the contact portion shown in FIG.

FIG. 22 is a sectional view taken along line XXII-XXII in FIG. 19;

FIG. 23 is an enlarged exploded perspective view of a main part for showing a mounting state of the arc-shaped relay terminal.

FIG. 24 is an exploded perspective view showing a conventional rotary switch.

[Explanation of symbols]

 2 Switch body part 50 Switch operation part 80 Arc-shaped relay terminal 81 Contact 90 Lead wire 120 Contact part 130 Contact part 140 Crimping part

Claims (2)

[Claims] 1. A rotary switch in which a switch operation part is rotatable between a predetermined contact open position and a predetermined contact closed position about a predetermined rotation axis on a switch main body. A relay terminal having a switch operation unit side is provided on the switch operation unit side, and the switch operation unit is in contact with each of the contacts in a state where the switch operation unit is rotated to the contact closed position on the switch body unit side, and A pair of contact portions is provided at each position where the contact is not in contact with each of the contacts when the switch operation portion is rotated to the contact open position, and at least one of the contact portions is provided with a contact. A rotary switch integrally formed with a crimping portion for crimping and holding an end of a lead wire for electrically connecting the portion to a predetermined external electric circuit. 2. A switch body having an enclosing wall formed on an upper surface thereof; and a switch body being rotatably operable between a predetermined contact open position and a contact closed position so as to close the enclosure wall opening. A circular switch operation part, a relay terminal provided on the switch operation part side and having contacts at both ends, and an inner peripheral surface of a surrounding wall of the switch body part, wherein the switch operation part is In the respective positions where the respective contacts come into contact with the respective contacts in a state where the contacts are rotated to the contact closed position, and the respective contacts do not contact with the respective contacts in a state where the switch operation unit is pivotally operated to the contact open position. A crimping portion for crimping and holding a lead wire end is formed integrally with the contact portion on one side, and the lead wire crimped to the crimping portion is provided on the surrounding wall. Notch formed on one side The extension terminal portion is formed integrally with the contact portion on the other side through the outlet groove, and the extension terminal portion penetrates the bottom surface of the switch main body portion and is exposed at a lower portion thereof. Rotary switch arranged.