JP3560347B2 - Rotary switch - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a rotary switch used as a rotation stop positioning switch or the like.
[0002]
[Prior art and problems]
Conventionally, rotary switches used as rotation stop positioning switches, etc. FIG. As shown in the figure, a slide 130 having a substrate 130 provided with a circular common electrode 131 and a substantially annular stop positioning electrode 132, 133 on the surface, and contact portions 141, 142, 143 slidingly contacting the electrodes 131, 132, 133 respectively. And a child 140. The stop positioning electrodes 132 and 133 have rotation stop gaps 137a and 137b, respectively. The electrodes 131, 132, 133 are connected to the extraction electrodes 134, 135, 136, respectively. The board 130 and the slider 140 are separately manufactured as separate components, and after being assembled to a device (for example, a motor actuator in an automotive air conditioner), function as a rotary switch.
[0003]
Therefore, it was not possible to check the function of the conventional rotary switch before assembling it to the device. Furthermore, since the electrodes 131 to 133 are arranged concentrically in quadruple with the extraction electrode 134, the size of the substrate 130 is increased, and it is difficult to reduce the size of the rotary switch. Further, in order to extract the extraction electrodes 134 and 135 to the edge of the substrate 130, it is necessary to secure a space for disposing the extraction electrodes 134 and 135 in the portions of the rotation stopping gaps 137a and 137b. Therefore, the gaps 137a and 137b have a problem that the dimension of the gap 137a and 137b is wider than the dimension optimal for the rotation stop function, and the stop position accuracy is deteriorated.
[0004]
Therefore, an object of the present invention is to provide a rotary switch that has excellent stop position accuracy, is small, and functions as a single unit.
[0005]
[Means and Actions for Solving the Problems]
In order to solve the above problems, a rotary switch according to the present invention includes an external terminal with an electrode formed integrally with a common electrode, an external terminal with an electrode formed integrally with a first stop positioning electrode, and A switch substrate on which an external terminal with an electrode integrally formed with the second stop positioning electrode is insert-molded; a contact portion that slides on the common electrode; and a contact that slides on the first and second stop positioning electrodes. And a slider rotatably provided on the substrate, wherein the common electrode is disposed in a state where the common electrode is exposed at the center of the surface of the substrate, and the first and second electrodes are provided. A stop positioning electrode is disposed on the surface of the substrate and exposed on the same circle with a rotation stop gap outside the common electrode, and a portion connected from each electrode to an external terminal is the base. And each of the external terminals is led out from one side surface of the substrate, and the angle formed by both ends of the stop positioning electrode on the same circle with the center of the same circle is on both sides of the rotation stop gap. Is (180 ° −α) when an angle between the center of the same circle and α is (180 ° −α), and the contact portion that slides on the common electrode always slides on the common electrode and is disposed on the same circle. The angle formed between the two contact portions slidingly contacting the first and second stop positioning electrodes with the center of the slider is set to be smaller than (180 ° −α) and larger than α. At least one of the two contact portions is always slid on at least one of the stop positioning electrodes.

[0006]
In the above configuration, insert the external terminals Embed the external positioning terminal side of the external terminal in the board. Therefore, it is not necessary to dispose an extraction electrode on the substrate surface as in the related art, and the substrate size can be reduced accordingly. Further, it is not necessary to secure an area for disposing the extraction electrode in the gap for stopping the rotation of the stop positioning electrode. Therefore, the size of the rotation stop gap is set to an optimum size for the rotation stop function, and the stop position accuracy of the rotary switch is improved. Further, by molding the external terminal integrally with the stop positioning electrode, a substrate having the external terminal insert-molded and the stop positioning electrode exposed on the surface is efficiently manufactured. The common electrode is also molded integrally with the external terminal, and this external terminal So that the common electrode side is embedded in the substrate When insert molding is performed, the efficiency of substrate production is further improved.
[0007]
Further, the rotary switch according to the present invention is concentric with a rotation stop gap in a state where a plurality of stop positioning electrodes are connected to the external terminals, respectively, on a surface of the substrate on which a plurality of external terminals are already insert-molded. It is characterized in that it is provided. The stop positioning electrode is provided on the surface of the substrate by means such as printing. Thus, the shape of the stop positioning electrode is changed independently of the external terminals, and the shape of the stop positioning electrode is easily changed. When a common electrode is provided on the surface of a substrate on which a plurality of external terminals have been insert-molded in a state where the common electrode is connected to at least one of the external terminals, the shape of the common electrode can be easily changed.
[0008]
【Example】
Hereinafter, embodiments of a rotary switch according to the present invention will be described with reference to the accompanying drawings.
[First embodiment, FIGS. 1 to 9]
In the first embodiment, a rotary switch capable of selecting two rotation stop positions will be described. As shown in FIG. 1, the rotary switch generally includes a substrate 1, a slider 15 slidably contacting the substrate 1, a shaft member 25, and a cover member 35.
[0009]
The substrate 1 is provided with a hole 2 for bearing the shaft member 25 at the center thereof. As a material of the substrate 1, an insulating material such as a resin is used. On the surface of the substrate 1, an annular common electrode 3 is exposed along the hole 2, and the stop positioning electrodes 4, 5 are exposed on the same circle along the common electrode 3. The stop positioning electrodes 4 and 5 are provided with gaps 6a and 6b for stopping rotation. Each of the electrodes 3, 4, 5 is buried in a surface portion of the substrate 1 with its upper surface exposed, and the upper surfaces of the electrodes 3, 4, 5 and the upper surface of the substrate 1 are flush with each other (see FIG. 4). ). Therefore, no step is formed at the boundary between the electrodes 4, 5 and the gaps 6a, 6b, so that the contact portions 20, 21 of the slider 15 described later can move smoothly.
[0010]
As shown in FIG. 2, the electrodes 3, 4, and 5 are formed integrally with the external terminals 10, 11, and 12 by pressing a metal plate. The external terminals 10, 11, and 12 with electrodes are insert-molded in a state of being connected to the hoop material 13 and then separated from the hoop material 13. The external terminals 10, 11, and 12 are led out from one side surface of the substrate 1 and are in-line type terminals. The external terminals 10, 11, and 12 may be bent along the side and bottom surfaces of the substrate 1 to be chip-type terminals that can be surface-mounted.
[0011]
The substantially circular slider 15 has a hole 16 at the center. The hole 16 has a notch 16a. Along the hole 16, a tongue piece 19 provided with a contact portion 22, which is always in slidable contact with the common electrode 3, extends in the circumferential direction. Further, on the outer edge of the slider 15, tongue pieces 17, 18 provided with contact portions 20, 21 at the tips thereof, which are in sliding contact with the stop positioning electrodes 4, 5, respectively, extend in the circumferential direction. At this time, the contact portions 20, 21 are provided so that the distance from the center of the hole 16 is slightly different (see FIG. 4). This is because local wear of the stop positioning electrodes 4 and 5 can be reduced.
[0012]
The shaft member 25 has a fulcrum shaft 26 at the center, and a disc-shaped flange 27 and a stopper 28 in contact with the lower surface of the flange 27 are aligned with the fulcrum shaft 26 in the direction of the fulcrum shaft 26. It is provided in a state.
The cover member 35 has a hole 36 at the center, and a concave portion 37 for accommodating a part of the slider 15 and the shaft member 25 is provided inside. Further, on an outer peripheral portion of the cover 35, a foot portion 38 is provided which is engaged with the notch 8 provided on the substrate 1.
[0013]
The slider 15 has the fulcrum shaft 26 of the shaft member 25 inserted into the hole 16, and the hole 16 and the notch 16 a are fitted to the stopper portion 28 and the projection 28 a provided on the stopper portion. It is attached. The shaft member 25 to which the slider 15 is attached is assembled so that the lower end of the fulcrum shaft 26 is inserted through the hole 2 provided in the substrate 1 so as to be rotatable about the fulcrum shaft 26. In the cover member 35, the upper end of the fulcrum shaft 26 of the shaft member 25 is inserted into the hole 36, the foot 38 is inserted into the notch 8 of the substrate 1, and the tip of the foot 38 extends along the bottom surface of the substrate 1. And assembled to the substrate 1.
[0014]
Thus, the rotary switch 40 shown in FIGS. 3 and 4 is obtained. In the rotary switch 40, the slider 15 and the shaft member 25 are rotatable about a fulcrum shaft 26, and at the same time, the contact portions 20, 21 and 22 of the slider 15 slide on the substrate 1. The electrical connection between the slider 15 and the external terminals 10, 11, 12 is established by contact of the contact portions 20, 21 with the stop positioning electrodes 4, 5 and contact of the contact portion 22 with the common electrode 3. Done.
[0015]
Further details will be described with reference to FIGS. The angle α formed by the portions of the rotation stopping gaps 6a and 6b with the center of the hole 2 is represented by the angle (180−180) when the angle formed between the contact portions 20 and 21 of the slider 15 and the center of the hole 16 is γ. γ), that is, smaller than the angle β, so that the contact portions 20, 21 do not come off the stop positioning electrodes 4, 5 at the same time. Therefore, the contact portion 22 always comes into sliding contact with the common electrode 3, and at least one of the contact portions 20, 21 comes into sliding contact with at least one of the stop positioning electrodes 4, 5.
[0016]
In the rotary switch 40 thus obtained, the stop positioning electrodes 4, 5 can be arranged on the same circle, and the external terminals 10, 11, 12 formed integrally with the common electrode 3 and the stop positioning electrodes 4, 5 are connected. Insert mold In a state in which the part of the external terminals 10 to 12 on the common electrode side or the part of the external terminals 10 to 12 on the stop positioning electrode side is embedded in the substrate 1, Since the substrate 1 is formed, a space for disposing the extraction electrode on the surface of the substrate 1 is not required unlike the conventional case, and the size of the substrate 1 can be reduced accordingly, and the product size can be reduced. Further, it is not necessary to secure a space for disposing the extraction electrodes in the portions of the rotation stopping gaps 6a and 6b, and the gaps 6a and 6b are narrower than the conventional switch, that is, are set to the optimal size for the rotation stopping function. it can. As a result, a rotary switch having excellent stop position accuracy can be obtained. In addition, since the function can be checked with a single rotary switch, the yield of the devices can be improved by checking the functions in advance and incorporating only those which are determined to be acceptable products into the devices and the like.
[0017]
Next, the operation of the rotary switch 40 having the above configuration will be described. Here, a case will be described in which the rotary switch 40 is used by being incorporated in a motor actuator of an automotive air conditioner.
As shown in FIG. 7, the motor actuator generally includes a rotary switch 40, a motor 45, gears 47 and 48, and an arm 50. A large-diameter gear 48 meshes with a gear 47 axially mounted on a rotating shaft 46 of a motor 45. An arm 50 is mounted on an upper end of an operation shaft 49 holding the gear 48. The lower end of the operation shaft 49 is connected to the upper end of the fulcrum shaft 26 of the rotary switch 40 in the same axial direction. The changeover switch 53 electrically connected to the external terminals 11 and 12 of the rotary switch 40 is electrically connected to one external terminal of the motor 45 via the DC power supply 52. The other external terminal of the motor 45 is electrically connected to the external terminal 10 of the rotary switch 40.
[0018]
When a current flows through the motor 45, the rotating shaft 46 rotates counterclockwise, and the gears 47 and 48 rotate in the counterclockwise and clockwise directions, respectively. Further, the operation shaft 49 holding the gear 48 rotates, and the arm 50 mounted on the operation shaft 49 rotates about the operation shaft 49 as a fulcrum, and the fulcrum shaft of the rotary switch 40 connected to the operation shaft 49. 26, that is, the shaft member 25 and the slider 15 attached to the shaft member 25 also rotate clockwise.
[0019]
The operation of the motor actuator having the above configuration will be described with reference to FIGS.
FIG. 8 is an electric circuit diagram of the motor actuator. The contact portions 20, 21, 22 of the slider 15 are at the positions indicated by solid lines, that is, the contact portion 20 is in sliding contact with the stop positioning electrode 5, the contact portion 21 is in sliding contact with the stop positioning electrode 4, and the contact portion 22 is in contact with the stop positioning electrode 4. It is in sliding contact with the common electrode 30. In this state, when the changeover switch 53 is connected to the 53a side, a current flows from the DC power supply 52 to the motor 45, the external terminal 10, and the common electrode 3. The common electrode 3 is electrically connected to the slider 15 at the contact portion 22, and the slider 15 is electrically connected to the stop positioning electrode 5 at the contact portion 20. It flows to the stop positioning electrode 5 and the external terminal 12 via the moving element 15.
[0020]
Thus, a circuit through which a current flows is formed, and the rotating shaft 46 of the motor 45 rotates counterclockwise. The rotation of the rotation shaft 46 causes the arm 50 to rotate clockwise from the position shown by the solid line in FIG. 7 around the operation shaft 49 via the gears 47 and 48 and the operation shaft 49, and the fulcrum of the rotary switch 40. The shaft 26, that is, the shaft member 25 and the slider 15 rotate clockwise. The slider 15 rotates to move the contact portions 20, 21, 22 to the positions 20 ', 21', 22 'indicated by dotted lines, and the contact portion 20 is disengaged from the stop positioning electrode 5 and in the rotation stop gap 6b. Located in. On the other hand, the contact part 21 is in sliding contact with the electrode 5 shortly before the contact part 20 comes off the electrode 5. Even if the contact part 20 comes off the electrode 5, the electrical connection between the slider 15 and the electrode 5 is maintained at the contact part. Maintained at 21.
[0021]
As shown in FIG. 9, when the slider 15 further rotates and the contact portion 21 of the slider 15 is disengaged from the stop positioning electrode 5 and moves into the rotation stopping gap 6b, the slider 15 and the electrode 3, The connection between the external terminals 10 and 12 electrically connected through the connection terminal 5 is lost, and no current flows. Therefore, the motor 45 stops. As a result, the arm 50 stops at the position 50 'indicated by the dotted line in FIG. 7 (that is, the position rotated 180 degrees clockwise), and the shaft member 25 and the slider 15 of the rotary switch 40 also move clockwise 180 degrees. Stop at the position rotated by degrees.
[0022]
Next, when the connection of the changeover switch 53 is switched to the 53b side, since the contact portion 20 of the slider 15 is in sliding contact with the stop positioning electrode 4, the current is supplied from the DC power supply 52 to the motor 45, the external terminal 10, the common electrode 3, flows to the slider 15, the stop positioning electrode 4, and the external terminal 11. Thus, a circuit through which a current flows is formed, and the rotating shaft 46 of the motor 45 rotates counterclockwise again. The rotation of the rotation shaft 46 causes the arm 50 to rotate clockwise again, and the shaft member 25 and the slider 15 of the rotary switch 40 also rotate clockwise again.
[0023]
In FIG. 10, even if the contact portions 20, 21, and 22 of the slider 15 move to the positions shown by solid lines and the contact portion 20 is positioned within the rotation stop gap 6a, the slider 15 and the stop positioning are stopped. Electrical connection with the electrode 4 is ensured at the contact part 21. Further, when the contact portions 20, 21, 22 of the slider 15 are indicated by dotted lines, that is, when the contact portion 21 is disengaged from the electrode 4 and moves into the rotation stop gap 6a, the slider 15, the electrode 3, The conduction between the external terminals 10 and 11 electrically connected via the connection terminal 4 is lost, and no current flows. Therefore, the motor 45 stops. As a result, the arm 50 stops after returning to the position indicated by the solid line in FIG.
[0024]
FIG. 11 is a timing chart of the motor actuator. In each of the stop positioning electrodes 4 and 5, the state where at least one of the contact portions 20 and 21 of the slider 15 is in sliding contact is set to the “ON” state, and both of the contact portions 20 and 21 are in sliding contact. The absence state is referred to as “OFF” state. The timing chart shows that at least one of the contact portions 20 and 21 is always in sliding contact with one of the stop positioning electrodes 4 and 5. The accuracy of the stop position of the rotary switch improves as the range of the “OFF” state decreases. In the rotary switch 40, since the dimensions of the rotation stopping gaps 6a and 6b are set to be smaller than those of the conventional switch, the angle α is small, and the range of the “OFF” state is also small.
[0025]
[Second embodiment, FIGS. 12 and 13]
FIG. 12 shows external terminals 60, 61, and 62 used for the rotary switch of the second embodiment. Each of the external terminals 60, 61, 62 is connected to a hoop material 63, and has a connection portion 60 a, which is bent at the tip end thereof so as to be connected to a common electrode 67 and stop positioning electrodes 68, 69 described later. 61a and 62a are provided. The external terminals 60 to 62 are separated from the hoop material 63 after being insert-molded in a state of being connected to the hoop material 63.
[0026]
As shown in FIG. The external terminals 60 to 62 have their common electrode side portions or stop positioning electrode side portions embedded in the substrate 65, and The connection portions 60a to 62a of the external terminals 60 to 62 are insert-molded so as to be exposed on the upper surface of the substrate 65. A hole 66 for bearing the fulcrum shaft of the shaft member is provided in the center of the substrate 65. The common electrode 67 and the stop positioning electrodes 68 and 69 are formed on the upper surface of the substrate 65 by means of printing or the like, using a conductive paste or carbon, and electrically connected to the connection portions 60a, 61a and 62a, respectively. The stop positioning electrodes 68 and 69 are formed on the same circle with rotation stop gaps 70a and 70b.
[0027]
A rotary switch can be obtained by combining the substrate 65 having the above configuration with the slider 15, the shaft member 25, and the cover member 35 described in the first embodiment. The obtained rotary switch has the same operation and effect as the rotary switch of the first embodiment. In addition, since the shape of the electrodes 67, 68, 69 can be changed independently of the external terminals, it is possible to produce various types of rotary switches having different shapes of the electrodes 67, 68, 69 according to the specifications. Production efficiency can be improved.
[0028]
[Third embodiment, FIG. 14]
FIG. 14 shows a substrate 80 used in the rotary switch of the third embodiment. A hole 81 for bearing a fulcrum shaft of a shaft member is provided in the center of the substrate 80, an annular common electrode 82 is provided along the hole 81, and a concentric circle is provided outside the common electrode 82. Stop positioning electrodes 83, 84, 85, 86, 87 are arranged in a double pattern. The stop positioning electrodes 83, 84 and the stop positioning electrodes 85, 86, 87 are disposed on the same circle with rotation stopping gaps 88a, 88b, 89a, 89b, 89c, respectively. The dimensions of the gaps 88a and 88b are set equal, and the dimensions of the gaps 89a, 89b and 89c are set equal. The electrodes 82 to 87 are formed integrally with the external terminals 92, 93, 94, 95, 96, 97, respectively.
[0029]
By combining the substrate 80 having the above configuration with a slider having six contact portions, a rotary switch having five stop positions can be easily obtained. That is, of the six contact points, one is used for sliding contact with the common electrode 82, and the remaining five are used for sliding contact with the positioning electrodes 83 to 87, thereby selecting five stop positions. can do. Also, the stop positioning electrodes 83, 84 disposed on the same circle on the inner side and the stop positioning electrodes 85, 86, 87 disposed on the same outer circle are grouped, and one of them is selected by a changeover switch. The circuit may be configured such that current flows only through the electrodes included in the group.
[0030]
[Fourth embodiment, FIG. 15]
FIG. 15 shows a rotary switch according to the fourth embodiment. As shown in FIG. 15, the rotary switch generally includes a substrate 151, a slider 164, a shaft member 175, and a cover member 185.
A hole 152 for bearing the shaft member 175 is provided in the center of the substrate 151. On the surface of the substrate 151, stop positioning electrodes 154 and 155 are provided on the same circle along the hole 152 with rotation stop gaps 156a and 156b. The stop positioning electrodes 154 and 155 are formed integrally with the external terminals 161 and 162, respectively, and the external terminals 161 and 162 with the electrodes are insert-molded. In a state where the portions of the external terminals 161 and 162 on the stop positioning electrode side are embedded in the substrate 151, A substrate 151 is formed. Note that the stop positioning electrodes 154 and 155 and the external terminals 161 and 162 may be separate members.
[0031]
The substantially circular slider 164 has a hole 165 at the center. The hole 165 has a notch 165a, and a small cutout 166 is provided at an edge of the hole 165. Along the hole 165, a tongue piece 169 provided with a contact portion 172 at the distal end which is always in sliding contact with a cover member 185 described later extends in the circumferential direction and is bent upward. Further, tongue pieces 167 and 168 provided with contact portions 170 and 171 at the distal ends thereof, which are in sliding contact with the stop positioning electrodes 154 and 155, extend in the outer peripheral portion of the slider 164 in the circumferential direction, and extend downward. Is bent.
[0032]
The shaft member 175 has a fulcrum shaft 176 at the center, and a stopper portion 178 is provided on the fulcrum shaft 176 so that the axial direction thereof is aligned with the fulcrum shaft 176.
The cover member 185 has a hole 186 at the center, and a concave portion 187 for accommodating a part of the slider 164 and the shaft member 175 is provided inside. An external terminal 189 and a foot 188 are provided on an outer peripheral portion of the cover member 185. The external terminal 189 is set in a notch 159 provided in the substrate 151, and the foot 188 is provided in a notch 158 provided in the substrate 151. Will be locked. Since the cover member 185 also functions as a common electrode, a material having excellent conductivity is used as the material of the cover member 185.
[0033]
The slider 164 presses the fulcrum shaft 176 of the shaft member 175 into the hole 165, and the hole 165 and the notch 165 a are fitted into the stopper 178 and the projection 178 a provided on the stopper 178. Then, it is attached to the shaft member 175 by utilizing the elastic force of the cut small pieces 166. The shaft member 175 to which the slider 164 is attached is rotatably assembled around the fulcrum shaft 176 by inserting the lower end of the fulcrum shaft 176 into a hole 152 provided in the substrate 151. In the cover member 185, the upper end of the fulcrum shaft 176 of the shaft member 175 is inserted into the hole 186, the foot 188 is inserted into the notch 158 of the board 151, and the tip of the foot 188 is along the bottom surface of the board 151. And assembled to the substrate 151. The external terminal 189 is set in the notch 159 of the substrate 151, and is an in-line type terminal together with the external terminals 161 and 162.
[0034]
In the rotary switch thus obtained, the slider 164 and the shaft member 175 are rotatable about the fulcrum shaft 176, and at the same time, the contact portions 170 and 171 of the slider 164 slide on the substrate 151, and 172 slides on the ceiling wall surface of the concave portion 187 of the cover member 185. The electrical connection between the slider 164 and the external terminals 161, 162, 189 is established by contact between the contact portions 170, 171 and the stop positioning electrodes 154, 155 and contact between the contact portion 172 and the cover member 185. Done. This rotary switch has the same function and effect as the rotary switch of the first embodiment, and it is not necessary to form a common electrode on the substrate 151. Therefore, the size of the substrate 151 is smaller than that of the rotary switch of the first embodiment. can do.
[0035]
[Other embodiments]
It should be noted that the rotary switch according to the present invention is not limited to the above embodiment, but can be variously modified within the scope of the gist.
Stop positioning electrodes may be concentrically arranged in triple or more on the surface of the substrate.
[0036]
In addition, sliders of various shapes are adopted according to specifications. For example FIG. As shown in FIG. 7, the slider 100 may be such that all of the tongue pieces 102, 103, 104 extending in the circumferential direction extend in the counterclockwise direction. The slider 100 is provided with a hole 101 having a notch 101a at the center. The tongue pieces 102 and 103 are provided at their tip portions with contact portions 105 and 106 which are in sliding contact with the stop positioning electrode, respectively, and the tongue piece 104 is provided with a contact portion 107 which is in sliding contact with the common electrode. FIG. Is set to be larger than the angle α described in the first embodiment. Less than FIG. as well as FIG. Is also set larger than the angle α.
[0037]
Also, FIG. As shown in (1), the slider 110 may have two contact portions that are in sliding contact with the common electrode and two contact portions that are in sliding contact with the stop positioning electrode. A hole 110 having a notch 111a is provided at the center of the slider 110, and tongues 113 and 115 provided at the distal end with contact portions 117 and 119 which are in sliding contact with the common electrode along the hole 110. Tongues 112, 114 provided at the distal end with contact portions 116, 118 slidingly contacting the stop positioning electrode at the outer edge of the slider 110 extend in the circumferential direction.
[0038]
further, FIG. As shown in FIG. 5, the slider 120 may have a symmetrical shape. The slider 120 is provided with a hole 121 having a notch 121a at the center thereof. A fan-shaped tongue piece 124 provided with a contact portion 127 for sliding contact with the common electrode extends along the hole 121. Contact portions 125 and 126, which are in sliding contact with the stop positioning electrode, contact the outer edge of the child 120 and extend in the circumferential direction so that tongue pieces 122 and 123 provided at the tip end face each other. FIG. 9 is a timing chart in the case where the rotary switch 40 of the first embodiment, in which the slider 120 is attached instead of the slider 15, is incorporated in the motor actuator. The timing chart shows that at least one of the contact portions 125 and 126 is always in sliding contact with one of the stop positioning electrodes 4 and 5.
[0039]
【The invention's effect】
As apparent from the above description, according to the present invention, a plurality of stop positioning electrodes are arranged concentrically, and the external terminals are insert-molded on the substrate. The external positioning of the external terminals is buried in the substrate. Therefore, it is not necessary to separately provide an extraction electrode on the surface of the substrate as in the related art, and a small rotary switch can be obtained.
[0040]
In addition, there is no need to secure a space for disposing the extraction electrode in the portion of the rotation stop gap, and the gap can be set to an optimum size for the rotation stop function. Can be
Further, since the substrate is manufactured by insert-molding the external terminal integrally formed with the stop positioning electrode, mass productivity is good and the cost can be reduced. If a substrate is manufactured by insert-molding external terminals integrally formed with the common electrode, mass productivity is further improved and the cost is reduced.
[0041]
Further, by assembling the cover member and the shaft member, it becomes easy to assemble the device into a motor actuator or the like in an automobile air conditioner, and it is possible to perform a function check in advance before assembling, and obtain a product having excellent dustproofness. Can be
In addition, if the stop positioning electrodes are provided on the surface of the substrate on which a plurality of external terminals have already been insert-molded, the shape of the stop positioning electrodes can be changed independently of the external terminals. The shape can be easily changed. Further, when the common electrode is provided on the surface of the substrate on which the plurality of external terminals are already insert-molded, and the common electrode is connected to at least one of the external terminals, the shape of the common electrode can be easily changed.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a first embodiment of a rotary switch according to the present invention.
FIG. 2 is an exemplary perspective view showing external terminals and electrodes used in the rotary switch shown in FIG. 1;
FIG. 3 is an exemplary perspective view showing the appearance of the rotary switch shown in FIG. 1;
FIG. 4 is a partial vertical sectional view taken along line XX ′ of FIG. 3;
FIG. 5 is a plan view of a substrate used for the rotary switch shown in FIG. 1;
FIG. 6 is a plan view of a slider used in the rotary switch shown in FIG. 1;
FIG. 7 is a schematic configuration diagram of a motor actuator incorporating the rotary switch shown in FIG. 1;
FIG. 8 is an electric circuit diagram of the motor actuator shown in FIG. 7;
FIG. 9 is an electric circuit diagram showing an operation state of the motor actuator continued from FIG. 8;
FIG. 10 is an electric circuit diagram showing an operation state of the motor actuator following FIG. 9;
FIG. 11 is a timing chart of the motor actuator shown in FIG. 7;
FIG. 12 is a perspective view showing an external terminal used in a rotary switch according to a second embodiment of the present invention.
13 is a perspective view showing a substrate formed by insert-molding the external terminals shown in FIG.
FIG. 14 is a perspective view showing a substrate used in a third embodiment of the rotary switch according to the present invention.
FIG. 15 is an exploded perspective view showing a fourth embodiment of the rotary switch according to the present invention.
FIG. 16 is a plan view showing a modification of the slider.
FIG. 17 is a plan view showing another modification of the slider.
FIG. 18 is a plan view showing still another modified example of the slider.
FIG. 19 is a timing chart of a motor actuator incorporating a rotary switch constituted by the slider shown in FIG. 18;
FIG. 20 is a perspective view showing a conventional rotary switch.
[Explanation of symbols]
1 ... substrate
3: Common electrode
4,5 ... Stop positioning electrode
6a, 6b: gap for stopping rotation
10, 11, 12 ... external terminals
15 ... Slider
20, 21, 22, ... contact part
40 ... Rotary switch
60, 61, 62 ... external terminals
65 ... Substrate
67… Common electrode
68, 69 ... Stop positioning electrode
70a, 70b: gap for stopping rotation
80 ... Substrate
82: Common electrode
83, 84, 85, 86, 87 ... stop positioning electrodes
88a, 88b, 89a, 89b, 89c ... rotation stop gaps
92, 93, 94, 95, 96, 97 ... external terminals
100 ... slider
105, 106, 107 ... contact part
110 ... Slider
116, 117, 118, 119 ... contact part
120 ... Slider
125, 126, 127 ... contact part
151 ... substrate
154,155 ... Stop positioning electrode
156a, 156b: gap for stopping rotation
161, 162: external terminal
164 ... Slider
170, 171, 172 ... contact part
185: Cover member (common electrode)
189 ... External terminal

Claims (1)

External terminals with electrodes formed integrally with the common electrode, external terminals with electrodes formed integrally with the first stop positioning electrode, and external terminals with electrodes formed integrally with the second stop positioning electrode A switch substrate with insert molding,
A contact portion slidably in contact with the common electrode, and a contact portion slidably contacting the first and second stop positioning electrodes, and a slider rotatably provided on the substrate;
The common electrode is disposed so as to be exposed at the center of the surface of the substrate, and the first and second stop positioning electrodes have a rotation stop gap on the surface of the substrate and outside the common electrode. Are arranged in a state of being exposed on the same circle, a portion connected from each electrode to an external terminal is embedded in the substrate, and each external terminal is led out from one side surface of the substrate,
When the angle between both ends of the stop positioning electrode on the same circle and the center of the same circle is α, and the angle between both sides of the rotation stop gap and the center of the same circle is α, (180 ° −α) Yes,
A contact portion that slides on the common electrode always slides on the common electrode,
The angle formed between the two contact portions slidingly contacting the first and second stop positioning electrodes disposed on the same circle with the center of the slider is smaller than (180 ° −α) and smaller than α. Is also set to be large, that at least one of the two contact portions is always slid on at least one of the stop positioning electrodes,
A rotary switch.

Images