KR102197890B1 - Switch device - Google Patents

Abstract

<Task>
A switch device is provided that turns on at the same time as the movable contact contacts the fixed contact, and turns on substantially simultaneously with the contact of the conductive part even when the conductive part, which is the movable contact, is inclined to contact the fixed contact.
<Solution>
The fixed contact 19 includes a common contact portion 21 formed of a band-shaped pattern disposed in a radial manner, and first and second symmetrically installed portions with a specific band-shaped pattern 21ab of the common contact portion 21 interposed therebetween. Consisting of two contact portions 22 and 23, the first contact portion 22 includes first contact patterns 22a and 22b provided between the band-shaped patterns and a first contact pattern 22b electrically connected to the first contact pattern 22b. A second contact pattern (23a, 23b) provided between the band-shaped patterns and a second contact pattern (23b) electrically connected to the second contact pattern (23b). 23c).

Description

Switch device {SWITCH DEVICE}

It relates to a switch device having a movable contact that contacts and switches to a fixed contact in connection with the operation of an operation knob. Specifically, when the movable contact contacts the fixed contact, it is turned on at the same time as the contact. , The present invention relates to a switch device configured to be turned on with a very small time lag after contact.

As a switch device that includes two switch elements and turns on these two switch elements at the same time, it is widely known, for example, as an engine start switch provided in a vehicle.

Specifically, such an engine start switch is often provided in a vehicle employing a smart ignition system.

In the smart ignition system, when the engine start switch is operated while the engine is stopped, a request signal is transmitted from the vehicle authentication device to the portable device, and the mobile device receiving the request signal sends its own ID signal to the vehicle authentication device. Is sent.

Accordingly, the vehicle authentication device determines whether or not the ID code included in the received ID signal is correct, and starts the engine if the ID code is correct.

In addition, the engine can be stopped by operating the engine start switch during engine startup.

On the other hand, if the engine start switch is composed of one switch element, the engine may stop against the will of the driver if it is switched on for some reason while the engine is running, so two switches like the above engine start switch The element is provided so that the engine does not start or stop unless the two switch elements are turned on at the same time.

Japanese Patent Laid-Open No. 2011-169178

The engine start switch described above has a configuration in which two switch circuits are arranged in one switch element in order to prevent unintended operation. Then, one operation knob is pushed in the holder to operate, and the two switch elements are turned on at the same time by interlocking with this operation of the operation knob.

However, there are cases in which the operation knob moves forward and backward in a tilted state due to the mechanical gap between the operation knob and the holder or mechanical rattling of the operation knob due to aging use. Even in the case, in one switch element, there may be a temporal shift between ON of one switch circuit and ON of the other switch circuit, and when this temporal shift exceeds a predetermined time, the engine cannot be started. There is a case of malfunction.

In order to solve this problem, a hinge lever having one end rotatably supported by a shaft is provided, the hinge lever is pushed by an operation knob to rotate, and the two switch elements are simultaneously rotated by the hinge lever. An engine start switch having a configuration in which each switch circuit is switched on without causing a time lag in conjunction with each other has already been proposed.

However, even in such an engine start switch, there is a case where a timing shift occurs between each switch circuit of a switch element due to mechanical rattling of the operation knob or hinge lever accompanying aging use.

As described above, the time lag between each switch circuit of the two switch elements is turned on at the same time as the movable contact contacts the fixed contact in one switch circuit, whereas in the other switch circuit, This is because the movable contact does not come into contact with the fixed contact and is not turned on immediately, but is turned on after the lapse of the predetermined time due to the tilt of the operation knob or the hinge lever.

Therefore, in view of the above-described circumstances, the present invention turns on at the same time as the movable contact contacts the fixed contact, and even when the movable contact is inclined and contacts the fixed contact due to the operation knob, etc. An object of the present invention is to provide a switch device in which the other switch circuit is turned on within an extremely short time after turning on.

In order to achieve the above object, in the present invention, as a first invention, a switch device having a fixed contact formed in a pattern on a printed circuit board and a movable contact for switching by contacting the fixed contact in conjunction with operation of an operation knob. In the above, the fixed contact is symmetrically formed with a common contact portion formed in a band shape pattern radially formed from a central portion of a region facing the movable contact point, and a specific band pattern of the common contact portion interposed therebetween. Consisting of installed first and second contact portions, the first contact portion is a first contact pattern formed between the band-shaped patterns of the common contact portion on one side of the specific band-shaped pattern, and the specific band-shaped pattern On the other side of the common contact portion, formed as a first separation contact pattern provided between the band-shaped patterns of the common contact portion and electrically connected to the first contact pattern, and the second contact portion is on the other side of the specific strip-shaped pattern. , A second contact pattern formed between the band-like patterns of the common contact part, and a second separation electrically connected to the second contact pattern by installing between the band-like patterns of the common contact part on one side of the specific band-like pattern. It proposes a switch device characterized in that formed in a contact pattern.

As a second invention, in the switch device of the first invention, the first contact pattern, the first separation contact pattern, and the second contact pattern and the second separation contact pattern are provided in a through hole ( A switch device characterized in that the through hole) is electrically connected with an electrical connection pattern installed on the back surface of a printed circuit board.

As a third invention, in the switch device of the first or second invention described above, the first contact pattern and the second separation contact pattern are alternately band-shaped on one side of the specific strip-like pattern. Arranged between the patterns and formed as a planar contact extending toward the central portion of a radial band-shaped pattern forming a common contact point, the second contact pattern and the first separation contact pattern are formed of the above-described specific strip pattern. On the other side, there is proposed a switch device characterized in that it is formed as a planar contact extending toward a central portion of a radial strip pattern forming a common contact while alternately arranged between the strip patterns.

As a fourth invention, in the switch device according to any one of the first to third inventions described above, the fixed contact is a first contact pattern on one side of the specific band-shaped pattern of the common contact portion. A band-like pattern as a contact part, a second separation contact pattern, a band-like pattern as a common contact part, and a first contact pattern are sequentially arranged, and on the other side of the specific band-like pattern of the common contact part, the second contact pattern and the common contact part are A switch device is proposed, which is formed by sequentially arranging a strip pattern, a first separation contact pattern, a strip pattern as a common contact portion, and a second contact pattern.

As a fifth invention, in the switch device according to any one of the first to third inventions described above, the fixed contact has a strip pattern that is a common contact portion on one side of the specific strip pattern of the common contact portion. A first contact pattern and a second separation contact pattern are arranged between them, and on the other side of the specific band-shaped pattern of the common contact portion, the second contact pattern and the first separation contact pattern are interposed with the band-shaped pattern as a common contact portion therebetween It proposes a switch device characterized in that formed by arranging.

According to the first invention, the first and second contact patterns and the first and second separate contact patterns become multi-contacted fixed contacts with a common contact and an approach arrangement, and as a result, the movable contact contacts a little in an agitated state. Even in one case, since the first contact pattern and the common contact and the second contact pattern and the common contact are connected almost simultaneously, the movable contact contacts the fixed contact of the first contact pattern and turns on the fixed contact of the second contact pattern at the same time. In addition to that, even when the two circuits are not immediately turned on due to the inclined contact of the movable contact point, the switch device turns on after an extremely short time.

As a result, if the switch device of the present invention is provided as a switch element of an engine start switch of a vehicle, the two switch circuits in one switch element are reliably turned on at the same time, and two circuits are turned on with a slight time lag. Even in the case where two switch elements are provided, the two switch circuits of each switch are turned on almost at the same time, thereby providing a switch device having no problem in starting and stopping the engine.

The switch device of the second aspect of the present invention includes a through-hole provided on a printed circuit board and a printed circuit board for electrical connection between the first contact pattern and the first separation contact pattern, and the electrical connection between the second contact pattern and the second separation contact pattern. It is characterized by simplifying the configuration of the switch device by setting it as a configuration performed by an electrical connection pattern provided on the back surface.

The third invention is characterized in that the first and second contact patterns and the first and second separate contact patterns are formed as a planar pattern extending toward the central portion of a radial band-shaped pattern that is a common contact point.

According to this invention, since each contact pattern in a multi-contact configuration is a fixed contact with a flat shape, the contact area in which the movable contact contacts can be widened. Therefore, a switch that turns on reliably even when the movable contact contacts slightly out of position. Device.

In the fourth invention, a first contact pattern, a second separation contact pattern, and a first contact pattern are sequentially arranged on one side of a specific common pattern with a band-shaped pattern as a common contact portion therebetween, and On the other side, a second contact pattern, a first separation contact pattern, and a second contact pattern are sequentially disposed with a band-shaped pattern as a common contact portion therebetween to form a fixed contact portion.

Accordingly, according to the present invention, a position in which the movable contact is in contact with the common contact portion of the band pattern and the first contact pattern or the first separation contact pattern, and the movable contact portion of the common contact portion, the band pattern and the second contact pattern or the second separation contact The distance of the position contacting the pattern can be reduced.

From this, even if the movable contact is inclined contact with the fixed contact, the timing at which the first contact pattern or the first separation contact pattern and the strip pattern come into contact and turn on, and the second contact pattern or the second separation contact pattern and the strip pattern Since the deviation of the timing of contacting and turning on is small, and the timing is always constant, there is no case of unevenness due to the motion of the movable contact.

In the fifth invention, a first contact pattern and a second separation contact pattern are disposed on one side of a specific common pattern with a band-shaped pattern as a common contact part therebetween, and on the other side of the specific common pattern, a common contact part It is characterized in that a fixed contact portion is formed by arranging the second contact pattern and the first separation contact pattern with the band-shaped pattern therebetween.

Accordingly, according to the present invention, a switch device capable of reducing the ON timing of the first contact portion and the second contact portion as small as possible with a simplified configuration by reducing the contact pattern is provided.

1 is a cross-sectional view of an engine start switch for a vehicle.
2 is a configuration diagram showing a first embodiment of a fixed contact provided in the engine start switch.
Fig. 3 is a configuration diagram of a fixed contact similar to that of Fig. 2, showing an on portion of a switch.
Fig. 4 is a configuration diagram of a fixed contact similar to Fig. 3 showing a state in which the movable contact is in contact with the position shifted.
5 is a diagram showing a circuit example in which the above engine start switch is turned on.
6 is a configuration diagram showing a second embodiment of a fixed contact provided in the engine start switch.
Fig. 7 is a configuration diagram of a fixed contact similar to that of Fig. 6, showing an ON portion of a switch.

Next, an embodiment in which the present invention is implemented as an engine start switch of a vehicle will be described.

Fig. 1 is a cross-sectional view of an engine start switch. The engine start switch 10 is installed on an instrument panel by exposing the operation portion 11a of the operation knob 11 to the interior of the vehicle.

In the engine start switch 10 of the present embodiment, the slider portion 11b of the operation knob 11 is supported in the holder 12 so as to move forward and backward (movable in the vertical direction in Fig. 1), and the slider portion At the lower end of (11b), pressing portions 11c and 11d for operating the two switch elements 13 and 14 are provided.

The switch elements 13 and 14 include conductive portions 16 and 17 provided as movable contacts in the conical elastic portions 15a and 15b of the cylindrical head integrally formed on the rubber sheet 15, and the printed circuit board 18 It is composed of fixed contacts (19, 20) installed on.

Further, the rubber sheet 15 and the printed circuit board 18 are disposed in the holder 12 so as to be supported by the bottom plate 12a of the holder 12.

Further, the engaging projections 11e and 11f provided on the slider portion 11b are protruded into the guide holes 12b and 12c provided in the holder 12, and the engaging projections 11e and 11f are The pushing length of the operation knob 11 is determined within the range of movement within the guide holes 12b and 12c.

The above-described engine start switch 10 presses the operation part 11a of the operation knob 11 and pushes the slider part 11b into the holder 12, so that the pressing parts 11c and 11d As a result, the elastic portions 15a and 15b of the rubber sheet 15 are pressed, and as a result, the conductive portions 16 and 17 advance (fall in Fig. 1) to contact the fixed contacts 19 and 20, and the switch The switch circuits of the elements 13 and 14 are turned on.

After the operation knob 11 is pushed in and operated, when the hand is released from the operation knob 11, the operation knob 11 receives the restoring force of the conical elastic portions 15a, 15b of the rubber sheet 15, and Fig. 1 It double-acts in the state shown in, and the switch circuits of the switch elements 13 and 14 are turned off.

Next, the contact structure of the above-described switch elements 13 and 14 will be described.

In addition, since these switch elements 13 and 14 have the same configuration as the conductive portions 16 and 17 that are movable contacts and the fixed contacts 19 and 20, the contact configuration of the switch element 13 will be described.

2 is a configuration diagram showing the first embodiment of the fixed contact 19 of the switch element 13.

In addition, in this embodiment, the conductive part 16 of circular cross section is shown as a movable contact.

As shown in the figure, the fixed contact 19 of the switch element 13 is a common contact part 21 formed in a pattern on the printed circuit board 18, a first contact part 22, and a second contact part 23. It is formed with.

That is, the common contact portion 21 is formed as band-shaped patterns 21a to 21f extending radially at intervals of 60° centering on the central portion Q of the opposite region of the conductive portion 16 as a movable contact point.

In addition, the first contact portion 22 and the second contact portion 23 are patterned in a semicircle with a specific band-shaped pattern 21a, 21d (hereinafter referred to as “21ad”) of the common contact portion 21 interposed therebetween. Is forming.

Specifically, the first contact portion 22 is a first contact pattern 22a formed between the band patterns 21a and 21b and between the band patterns 21c and 21d on one side of the specific band pattern 21ad. , 22b) and a first separation contact pattern 22c formed between the band-shaped patterns 21e and 21f on the other side of the specific band-shaped pattern 21ad.

In addition, the first contact patterns 22a and 22b and the first separation contact pattern 22c form a planar contact extending toward the central portion Q while providing a narrow gap between each strip pattern.

Further, the second contact portion 23 is a second contact pattern 23a formed between the band patterns 21d and 21e and between the band patterns 21f and 21a on the other side of the specific band pattern 21ad, 23b) and the second separation contact pattern 23c formed between the band-shaped patterns 21b and 21c on one side of the specific band-shaped pattern 21ad.

In addition, the second contact patterns 23a and 23b and the second separation contact pattern 23c form a planar contact extending toward the central portion Q while providing a narrow gap between each strip pattern.

In addition, the first contact pattern 22b and the first separation contact pattern 22c of the first contact part 22 include through-hole parts 24a and 24b, and an electrical connection pattern provided on the back surface of the printed circuit board 18 It is electrically connected by (25).

Similarly, the second contact pattern 23b and the second separation contact pattern 23c of the second contact portion 23 are formed with through-hole portions 26a and 26b, and an electrical connection pattern 27 provided on the back surface of the printed circuit board 18. ) Is electrically connected.

In addition, reference numerals 21p, 22p, and 23p shown in Fig. 2 denote lead-out terminal portions of each contact portion.

The fixed contact 19 configured as described above is between the first and second contact patterns 22a, 22b, 23a, 23b and the band-shaped patterns 21a to 21f when the conductive part 16, which is a movable contact, is in contact. , It is composed of switch elements 28a to 28l formed between the first and second separation contact patterns 22c and 23c and the band-shaped patterns 21a to 21f.

That is, as shown in Fig. 3, the multi-contact portion of the switch element indicated by 28a to 28l becomes the switch portion. And in this embodiment, among these switch elements 28a to 28l, 28a, 28b, 28e, 28f, 28i, 28j constitute the switch circuit SW1 ((SW1-1) to (SW1-3)), and the switch elements 28c, 28d , 28g, 28h, 28k, 28l constitute the switch circuit SW2 ((SW2-1) to (SW2-3)), and the switch element 13 is turned on by turning on both the switch circuits (SW1 and SW2). do.

In addition, the same applies to the switch element 14.

In the fixed contact 19 configured as above, when the entire contact surface of the conductive part 16 contacts evenly, all switch elements 28a to 28l come into contact and the two switch circuits (SW1, SW2) are immediately turned on. When the part 16 is in contact with an inclined position, the two switch circuits SW1 and SW2 may not be turned on at the initial stage of contact, and may be turned on immediately after the contact.

For example, to describe an example, after contacting the first contact pattern 22a at the initial contact, and then contacting the band-shaped pattern 21a and/or 21b, the second contact pattern 23b or the second separation This is the case as if it comes into contact with the contact pattern 23c.

That is, since the conductive part 16 is in contact with the inclined, it first abuts the first contact pattern 22a, and the switch elements 28a and/or 28b are turned on in the subsequent progression of the conductive part 16, thereby turning on the switch circuit. This is the case in which the switch circuit SW2 is turned on by turning on (SW1) and then turning on the switch elements 28l and/or 28c.

Therefore, when the conductive part 16 is slightly inclined and abuts the fixed contact 19 due to operation while the operation knob is tilted, as described above, both switch circuits SW1 and SW2 are turned on at the initial contact point. However, immediately after the time lag is small, the two switch circuits SW1 and SW2 are both turned on, but the fixed contact 19 is multi-contacted like the switch elements 28a to 28l. Therefore, the switch element 13 turns on with a very small time difference after the conductive part 16 is brought into contact.

To describe an example, not only the time difference between contacting the conductive portion 16 with the first contact pattern 22a and contacting the band-shaped patterns 21a and/or 21b becomes very small, but also the first contact pattern ( The time difference from contacting 22a) to contacting the second contact pattern 23b or the second separation contact pattern 23c becomes very small.

This relationship is also similar to the case where the initial abutting position of the conductive portion 16 becomes other contact patterns, separation contact patterns, and strip patterns.

FIG. 4 shows a state in which the conductive portion 16 is in contact with the fixed contact 19 in a position shifted with respect to the central portion Q. As shown in FIG.

In this embodiment, with respect to the first contact pattern 22a, 22b, the first separation contact pattern 22c, the second contact pattern 23a, 23b, and the second separation contact pattern 23c, the central portion Q is Since it is formed as a planar contact pointed toward the opposite side, even if the conductive part 16 contacts the center part Q in a misaligned position, the two switch circuits SW1 and SW2 are reliably turned on. .

In addition, even when the conductive part 16 is inclined and displaced in contact, as in the above, a short time immediately after the conductive part 16 comes into contact with one of the contact parts (for example, the first contact part 22). A switch element 13 that contacts and turns on the other contact portion (for example, the second contact portion 23) is formed.

Although the switch element 13 has been described above, since the switch element 14 has the same configuration as already described, the description of the conductive portion 17 and the fixed contact 20 which are movable contacts will be omitted.

5 is a diagram showing a circuit example of the engine start switch 10 including the above-described switch elements 13 and 14. As shown in FIG.

In this circuit diagram, the switch circuit SW1-1 represents the switch elements 28a and 28b, the switch circuit SW1-2 represents the switch elements 28e and 28f, the switch circuit SW1-3 represents the switch elements 28i and 28j. Similarly, the switch circuit SW2-1 represents The switch elements 28g and 28h, the switch circuit SW2-2 represent the switch elements 28k and 28l, and the switch circuit SW2-3 represents the switch elements 28c and 28d.

In addition, since the switch element 14 has the same structure as the switch element 13, for each switch circuit (SW1-1), (SW1-2), (SW1-3), (SW2-1), (SW2) It is represented as -2) and (SW2-3).

In the present invention, the first contact pattern (22a, 22b) and the second separation contact pattern (23c), the second contact pattern (23a, 23b) and the first separation contact pattern (22c) are alternately band-shaped patterns (21a to 21f). ) Are placed between them.

That is, the switch circuit SW1((SW1-1), (SW1-2), (SW1-3)), SW2((SW2-1), (SW2-2), (SW2-3)) is a band pattern 21a. ) In the order of (SW1-1)→(SW2-3)→(SW1-2)→(SW2-1)→(SW1-3)→(SW2-2) in the counterclockwise direction, and switch circuit SW1 And SW2 are always arranged adjacent to each other with the band-shaped patterns 21a to 21f interposed therebetween.

With this arrangement, the distance between the point at which the switch circuit SW1 contacts the band patterns 21a to 21f and the point at which the switch circuit SW2 contacts the band patterns 21a to 21f is reduced, and is always constant. You can do it with the street.

Therefore, even if the conductive part 16 makes inclined contact with the switch elements 28a to 28l, the time difference between the timing of turning on the switch circuit SW1 and the timing of turning on the switch circuit SW2 is small, and always Since it becomes constant and there is no non-uniformity, the vehicle-side control device 29 reliably determines on the switch device, thereby reducing the possibility of determining an error due to non-uniformity in the timing of signal input.

In the engine start switch 10 configured in this way, in a normal state, as shown in Fig. 1, by pushing operation of the operation knob 11, the elastic portions 15a, 15b are moved by the pressing portions 11c, 11d. Since it is pressed, the conductive portions 16 and 17, which are movable contacts, contact the fixed contact, and the switch elements 28a to 28l of the switch elements 13 and 14 are simultaneously turned on.

Accordingly, the ON signal is transmitted to the vehicle-side control device 29 to start the engine or stop the engine.

In addition, since the operation knob 11 is tilted and pushed by a mechanical gap between the operation knob 11 and the holder 12 or mechanical rattling of the operation knob 11 due to aging use, for example, Even when the switch circuit SW1 and the switch circuit SW2 of the switch element 13 are not turned on at the same time, and the other switch circuit is turned on late in time with respect to one switch circuit, immediately after the conductive portion 16 abuts. Since it is turned on in a short period of time, the time lag in which these two switch circuits SW1 and SW2 are turned on is very small, and it can be determined that the control device 29 for inputting these ON signals is turned on approximately at the same time. Start the engine correctly or stop the engine.

As a result, the switch device including the switch elements 13 and 14 of the present embodiment becomes an effective switch device as an engine start switch of a vehicle.

As described above, the engine start switch 10 for a vehicle including the switch elements 13 and 14 for the purpose of turning on the two switch circuits SW1 and SW2 at the same time has been described, but in addition, each switch element 13 or As for 14), it is effective to implement similarly to the switch device which seems to be a problem when the conductive part which is the movable contact is inclined to contact the fixed contact.

In addition, in the first embodiment described above, the common contact 21 in which the band pattern is radially provided at an angle of 60° has been described, but it is not limited to 60°, and a band pattern set at an angle of 90° or less. It is also possible to implement so as to provide a contact pattern of the first and second contact portions between each of the band-shaped patterns as in the above embodiment.

An embodiment in which the band-shaped pattern is provided in a cross shape at an angle of 90° will be described as a second embodiment of the present invention.

6 is a configuration diagram showing a fixed contact of a switch element 13 provided in the engine start switch 10 described above as a second embodiment.

In the present embodiment, the fixed contact 19 of the switch element 13 is shown, but since the switch element 14 has the same configuration, the description is omitted, and the constituent parts common to the first embodiment described above are Use the same symbols and omit their explanations.

7 is a configuration diagram of the fixed contact 19 similar to that of FIG. 6 showing the switch elements 38a to 38h.

As shown in the figure, the common contact portion 31 is formed as band-shaped patterns 31a to 31d extending in a cross shape at intervals of 90° with the center portion Q of the opposite region of the conductive portion 16 as a movable contact as the center. have.

Then, the first contact portion 32 and the second contact portion 33 are in a semicircular shape with the specific band-shaped patterns 31a and 31c of the common contact portion 31 (hereinafter referred to as ``31ac'') interposed therebetween. Forming a pattern.

Specifically, the first contact portion 32 includes a first contact pattern 32a formed between the band patterns 31c and 31d on one side of the specific band pattern 31ac, and a specific band pattern 31ac. On the other side of ), it is formed by the first separation contact pattern 32b formed between the band-shaped patterns 31a and 31b.

In addition, the second contact portion 33 is a second contact pattern 33a formed between the band-like patterns 31b and 31c on the other side of the specific band-like pattern 31ac, and a specific band-like pattern 31ac. On one side of, it is formed by the second separation contact pattern 33b formed between the band-shaped patterns 31d and 31a.

In addition, the first contact pattern 32a and the first separation contact pattern 32b of the first contact part 32 include through-hole parts 34a and 34b, and an electrical connection pattern provided on the back surface of the printed circuit board 18 It is electrically connected by (35).

Similarly, the second contact pattern 33a and the second separation contact pattern 33b of the second contact portion 33 are formed with through-hole portions 36a and 36b, and an electrical connection pattern 37 provided on the back surface of the printed circuit board 18. ) Is electrically connected.

The fixed contact configured as described above is between the first and second contact patterns 32a and 33a and the band patterns 31b to 31d, and the first and second separation contact when the conductive part 16, which is a movable contact, contacts. It is composed of switch elements 38a to 38h formed between the patterns 32b and 33b and the band patterns 31a, 31b and 31d.

In this embodiment, the switch circuit SW1-1 represents the switch elements 38a and 38b, the switch circuit SW1-2 represents the switch elements 38e and 38f. Similarly, the switch circuit SW2-1 represents the switch elements 38c and 38d, and the switch circuit SW2-2 represents the switch. Elements 38g and 38h are shown.

With this configuration, for example, even if the conductive portion 16 makes inclined contact with the switch elements 38a to 38h, the time difference between the timing of turning on the switch circuit SW1 and the timing of turning on the switch circuit SW2 Is small, and is always constant, so that non-uniformity does not occur, the vehicle-side control device 29 reliably determines on the switch device, thereby reducing the possibility of determining as an error due to non-uniformity in the timing of signal input. The number of points is the same as in the previously described first embodiment.

Even when the conductive part, which is a movable contact, is inclined to contact the fixed contact, it is a switch device with very little delay and unevenness in the on-time, and can be applied to an engine start switch provided in a vehicle.

10 Engine start switch 11 Control knob
11c, 11d pressing part 12 holder
13, 14 switch element 15 rubber seat
15a, 15b elastic part 16, 17 conductive part
18 Printed board 19, 20 fixed contacts
21 Common contact 21a~21f band shape pattern
21ab Specific band-shaped pattern 22 1st contact part
22a, 22b first contact pattern 22c first separation contact pattern
23 Second contact part 23a, 23b Second contact pattern
23c second separation contact pattern 24a, 24b through hole
25 Electrical connection pattern 26a, 26b through-hole
27 Electrical connection pattern 28a~28l switch element
31 Common contact part 31a~31d band pattern
32a first contact pattern 32b first separation contact pattern
33a second contact pattern 33b second separation contact pattern
34a, 34b Through-hole 35 Electrical connection pattern
36a, 36b Through-hole 37 Electrical connection pattern

Claims (7)

A switch device having a fixed contact pattern formed on a printed circuit board and a movable contact for switching by contacting the fixed contact by interlocking with operation of an operation knob,
The fixed contact is a common contact portion formed of a band-shaped pattern radially formed from a central portion of a region facing the movable contact, and first and second symmetrically provided with a specific strip pattern of the common contact portion therebetween. It consists of a contact part,
The first contact portion includes a first contact pattern formed between the band-shaped pattern of the common contact portion on one side of the specific band-shaped pattern, and a band-shaped pattern of the common contact portion on the other side of the specific band-shaped pattern. Formed as a first separation contact pattern installed between and electrically connected to the first contact pattern,
The second contact portion includes a second contact pattern formed between the band-shaped patterns of the common contact portion on the other side of the specific band-shaped pattern, and a band-shaped pattern of the common contact portion on one side of the specific band-shaped pattern. A switch device comprising a second separation contact pattern installed between and electrically connected to the second contact pattern. The method of claim 1,
The first contact pattern, the first separation contact pattern, and the second contact pattern and the second separation contact pattern are electrically connected by a through-hole part provided on the printed circuit board and an electrical connection pattern provided on the back surface of the printed board. Switch device. The method according to claim 1 or 2,
The first contact pattern and the second separation contact pattern are alternately disposed between the strip patterns on one side of the specific strip pattern and are directed toward the central portion of the radial strip pattern forming a common contact point. Formed as a contact point on a plane that extends,
The second contact pattern and the first separation contact pattern are alternately disposed between the band-like patterns on the other side of the specific strip-like pattern, and toward the central portion of the radial strip-like pattern forming a common contact point. A switch device formed as an extended planar contact. The method according to claim 1 or 2,
The above fixed contact,
On one side of the specific band-like pattern of the common contact part, a first contact pattern, a band-like pattern as a common contact part, a second separation contact pattern, a band-like pattern as a common contact part, and a first contact pattern are sequentially arranged,
In addition, on the other side of the specific band-like pattern of the common contact part, a second contact pattern, a band-like pattern as a common contact part, a first separation contact pattern, a band-like pattern as a common contact part, and a second contact pattern are sequentially formed. Switch device. The method of claim 3,
The above fixed contact,
On one side of the specific band-like pattern of the common contact part, a first contact pattern, a band-like pattern as a common contact part, a second separation contact pattern, a band-like pattern as a common contact part, and a first contact pattern are sequentially arranged,
In addition, on the other side of the specific band-like pattern of the common contact part, a second contact pattern, a band-like pattern as a common contact part, a first separation contact pattern, a band-like pattern as a common contact part, and a second contact pattern are sequentially formed. Switch device. The method according to claim 1 or 2,
The above fixed contact,
In one side of the specific band-like pattern of the common contact part, the first contact pattern and the second separation contact pattern are disposed with the band-like pattern as the common contact part therebetween,
Further, on the other side of the specific band-like pattern of the common contact portion, the second contact pattern and the first separation contact pattern are arranged and formed with a band-like pattern as a common contact portion therebetween. The method of claim 3,
The above fixed contact,
In one side of the specific band-like pattern of the common contact part, the first contact pattern and the second separation contact pattern are disposed with the band-like pattern as the common contact part therebetween,
Further, on the other side of the specific band-like pattern of the common contact portion, the second contact pattern and the first separation contact pattern are arranged and formed with a band-like pattern as a common contact portion therebetween.

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