JPH06260059A - Selector switch - Google Patents

Abstract

PURPOSE:To provide a small selector switch allowing a high-reliability switch action by providing switch buttons on a main body case storing a printed board, and providing operation levers transferring the motion of the buttons to slide shafts. CONSTITUTION:A vehicle switch 11 is integrated with an operation cover 12, a main body case 13, four switch units 22,..., a printed board 47, a switch action control circuit component 48 with hybrid IC, and a signal extracting connector 49 arranged vertically as main constituting elements, and it is fitted on a panel on the driver's seat side, for example. The connector 49 is electrically connected to the switch units 22 via the conducting pattern 50, and output signals of the switch units 22 and the control signal processed by the control circuit component 48 are outputted to motors from the connector 49 via a cable connected to the connector 49. The terminal group 51 of the connector 49 is electrically connected to the conducting pattern 50 of the printed board 47.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a changeover switch for changing over the polarity of forward / reverse rotation of a motor, for example, opening / closing control of a window of an automobile or rotation direction of an electric tool. The present invention relates to a changeover switch having a structure in which highly reliable switch operation can be expected.

[0002]

2. Description of the Related Art Conventionally, a power window switch for controlling the opening and closing of windows of an automobile has a base made of a resin molding material, in which each contact is directly caulked through a connecting terminal piece, and the contact between the contacts is fixed. Is connected with a metal plate crawling on the base, and the connection terminal pieces of each contact are connected with a connector for extracting a signal to the outside. In addition, a recess is formed between the contacts to provide a common contact, and a substantially V-shaped contact piece is fitted in, and the contact piece is also moved in a seesaw manner in conjunction with the switch button's movement. The contact was turned on and off.

[0003]

However, since the contact is fixed by caulking the connecting terminal piece to the resin base, when connecting the electric wire to the connecting terminal piece, the connecting terminal piece wobbles due to an external force. However, the contact reliability with the contact part was lacking.

Further, since it is necessary to connect an electric wire to each connecting terminal piece, the number of work steps at the time of assembling is increased and the production efficiency is poor.

Further, the substantially V-shaped contact piece of the concave portion between the contacts is
Since it is not fixed in place until the case equipped with the switch button is put on the base, it easily comes off from the recess during the assembly work, which causes a significant obstacle in the work. ing.

Further, a convex portion projecting from the switch button is engaged with the contact piece so that the seesaw motion of the button is transmitted to the contact piece by sliding the convex portion. Therefore, the convex portion is worn out quickly, and the abrasion hinders the transmission of the seesaw motion, causing a contact failure of the contact.

Further, apart from the base having the contact portion,
A printed circuit board on which electronic components are mounted is required, and a connecting means for connecting the circuit board and the base is used, which causes a problem that the entire apparatus becomes large and complicated.

An object of the present invention is to provide a changeover switch which solves these problems.

[0009]

According to the present invention, a switch unit for moving a slide shaft movable in opposite directions to perform a switch operation at an internal contact portion is mounted on a printed circuit board together with a switch operation control circuit component. , Electrically connecting the switch unit and the switch operation control circuit component to the connector mounted on the printed circuit board by the conductive pattern of the printed circuit board, and equipping the main body case accommodating the printed circuit board with the switch button, The changeover switch is provided with an operating rod for transmitting the movement of the switch button to the slide shaft.

Further, according to the present invention, the slide shaft is
It is characterized in that it is a changeover switch formed by selectively moving one of a pair of movable pairs in opposite directions and passing the operating rod between the pair of slide shafts.

[0011]

According to the present invention, when the switch button is operated, the operating rod that moves in accordance with the operating direction works to press the slide shaft in accordance with that direction, and transmits the movement of the switch button to the slide shaft. By the movement of the slide shaft, contact switching is performed at the contact portion in the switch unit, and the switching signal generated at this time is output to the outside via the connector.

[0012]

According to the present invention, the following effects can be obtained. Instead of directly attaching the contact piece to the base as in the past, the switch unit containing the contact portion is mounted on the printed circuit board, so the external force and impact during attachment do not affect the contact portion, and contact reliability is improved. The property is improved.

Since it is only necessary to mount the switch unit on the printed circuit board, the mounting work of the contact portion is easy,
Further, since the switch unit is electrically connected to the connector by the conductive pattern of the printed circuit board, a connecting means by a separate member such as a metal plate and an electric wire is not required, so that the assembling work efficiency is improved and the cost can be reduced.

Since the slide shaft is pushed by the operating rod by the movement of the switch button to perform the switch operation, the contact portion between the operating rod and the slide shaft is hardly worn, and therefore there is no contact failure of the contact portion, and it is semi-permanent. You can get a lifetime.

Since the switch unit is mounted on the printed circuit board, when changing the arrangement of the switch units by selecting the arrangement of the switch buttons, it is not necessary to change the mold of the base as in the conventional case, and the conductive pattern of the printed circuit board is not required. It is only necessary to change the switch, therefore the cost can be reduced, and the switch control circuit parts can be made into a hybrid IC,
By mounting them on the same printed circuit board, space efficiency can be improved and the size of the switch can be reduced.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. The drawings show an in-vehicle switch for controlling a window of an automobile, and in FIGS.
Is the operation cover 12 corresponding to the top and bottom, and the body case 13
And four switch units 22 ... and the printed circuit board 4
7, a switch operation control circuit component 48 which is a hybrid IC, and a signal extraction connector 49 are integrally configured as main components, which are mounted on, for example, a panel on the side of the driver's seat.

In this case, each of the switch units 22 ... Has a contact piece 3 extending downward from the switch case 12.
0, 31, 32, 33, 29a are passed through the printed circuit board 47 and soldered, and these contact pieces are electrically connected to the conductive pattern 50 on the printed circuit board. Also mounted on the printed circuit board 47, the switch unit 22 has a conductive pattern 5.
Is electrically connected through 0, and the output signal of each switch unit 22 ... And the control signal processed by the control circuit component 48 are connected from the connector 49 to the connector (not shown) at the time of switch operation described later. After that, it is output to the motor.

Therefore, it goes without saying that the terminal group 51 of the connector 49 is electrically connected to the conductive pattern 50 of the printed board 47.

As shown in FIG. 2, the printed circuit board 47 on which the switch unit 22 and the control circuit component 48 are mounted and the connector 49 are built in the main body case 13 from below, and the printed wiring board 47 and the connector 49 are connected to each other. They are integrated by fastening with screws 52 ..., and the operation cover 12 is capped from above to the main body case 13 so that both 12 and 13 are screw 53,
They are integrated by fastening at 53.

On the upper surface of the operation cover 12 described above, the first to fourth switch buttons 14 to 17 for opening and closing the windows corresponding to the windows installed in the automobile and the opening and closing operations of the windows are locked. , And a fifth switch button 18 for unlocking is exposed, and these buttons 14 to 18 are arranged with their pressing surfaces exposed on the upper surface of the operation cover 12.

Of the above switch buttons 14-18,
The first to fourth switch buttons 14 to 17 are provided so as to be located immediately above the four switch units 22 ... Mounted on the printed circuit board 47, and each switch button 14
The slider operation rod 21 to be described later is operated by the movement of the sliders 17 to 17.
The switch units corresponding to the respective switch buttons are driven via ... to perform the switching operation.

In order to pivotally support the switch buttons 14 to 17 on the main body case 13 and to suspend the slider operating rods 21 ... Connected thereto to the switch units 22 ... In the main body case 13. Through holes 54 are formed so as to penetrate through a support tube portion 55 provided immediately above each switch unit.

The above-mentioned first to fourth switch buttons 14-
In each of the upper surface recessed portions 19 of the operation cover 12, both side surfaces thereof are pivotally supported by the support cylinder portion 55 of the main body case 13, and in the upper surface recessed portion 19, the shaft support portion 56 tilts like a seesaw. Normally, these buttons 14 to 17 are in a neutral position, and the front ends of the switch buttons 14 to 17 are raised from this neutral position, and are pushed down to tilt. At this time, the upper surface recess 19 is provided with a space for the front end of the switch button so that the fingertip can be pulled up by the fingertip.

Then, the front end of the switch button is set to output a forward rotation signal of the motor for closing the window through the switch unit by pulling the front end of the switch button forward with the fingertip. By pushing down,
It is set to output the reverse rotation signal of the motor that opens the window.

The above-mentioned fifth switch button 18 is tiltably held in the upper surface opening 20 of the operation cover 12 and is stored and held with the upper surface thereof projected by a certain amount, and when one OFF side is pushed and tilted, the window is opened. A setting signal in the unlocked state in which the opening / closing operation is possible is output, and when the other ON side is pushed and tilted, a setting signal in the locked state that restricts the opening / closing operation of the windows at various places is output.

By the way, these switch buttons 14 to 1
As shown in FIG. 1, a slider operating rod 21 integrally provided under the button as the contact portion of the switch 8 tilts left and right with the shaft supporting portions of the switch buttons 14 to 18 as fulcrums. A switch unit 22 to be described later for tilting operation.
Switching operation is performed corresponding to the slide shaft of.

As shown in FIGS. 3, 4, and 5, the switch unit 22 described above includes a switch case 23, movable contacts 24, 24, and contact urging springs 24a, 24a.
, Sliders 25, 25, and slider return springs 26, 2
6, a leaf spring 27, 27, and a switch cover 28.

The above-mentioned switch case 23 is insert-molded in a state where six contact pieces 29 to 33, 29a are arranged side by side. On one surface of this switch case 23, a central portion is partitioned by a partition wall 34, and a pair of recesses 35, 35 are provided on the left and right sides. To form these recesses 35, 35
The contact pieces 29 to 33, 29a are exposed in parallel with the inner concave surface at the same pitch, and a pair of left and right movable contacts 24, 24 described later correspond to the exposed surfaces.

In this case, the three contact pieces 29 to 31 as the first contact pattern P1 are located in the left-side concave portion 35 partitioned by the partition wall 34, and the right-side concave portion 35 is provided with the first contact pattern 29-31. Three contact pieces 3 as the second contact pattern P2
2, 33, 29a are located, and these contact patterns P1
, P2 independently of each other, and movable contacts 24, 2 described later.
4 is made to correspond to contact, and thus the contact portion 57 is configured.

Of the six contact pieces 29 to 33, 29a, the contact pieces 29, 29a on both sides are integrally formed and electrically connected, and these contact patterns P1, P2 are turned on.
The first contact pattern P1 which is set as the contact pieces 29, 29a and is arranged in parallel inside each of the ON contact pieces 29, 29a.
Both side contact pieces 30, 31 are set as a common contact piece and an OFF contact piece, and both contact pieces 32, 33 on the second contact pattern P2 side are set as an OFF contact piece and a common contact piece. ing.

The common contact pieces 30 and 33 are connected to the conductive pattern 50 of the printed circuit board 47 and the connector 49.
Is connected to the motor M via the other contact pieces 31, 32,
Similarly, 29a is a conductive pattern 50 of the printed circuit board 47.
And to the electrodes via the connector 49.

The above-mentioned movable contactor 24 is provided in a W shape, and a swinging allowance projection 36 is provided in the central portion of the upper surface of the W shape, and the contact patterns P1 and P2 are arranged in parallel on the lower surface. A W-shaped bottom surface contact portion that is in contact with two points on the left and right is provided across both sides of the piece.

A pair of left and right movable contacts 24 are provided and housed in the above-mentioned recesses 35, 35, and the recesses 3 are formed by the sliding action of the corresponding sliders described later.
Sliding operation is carried out in the longitudinal direction within 5, 35.
As a result, the one movable contact 24 has the first contact pattern P.
Between the contact pieces 29 to 31 on one side and the movable contact 24 on the other side, the contact pieces 32, 33, 2 on the second contact pattern P2.
Between 9a, the corresponding contact positions are independently variably operated to switch the current flow direction.

The slider 25 described above is used in the switch case 2
A pair of right and left slidably accommodated in the respective concave portions 35, 35 of No. 3 and an engaging concave portion 37 for pressing and supporting the above-mentioned movable contact 24 is formed on the lower surface thereof, and further engaged. A protrusion-corresponding hole 38 into which the above-described rocking allowance protrusion 36 is fitted is formed in the center of the recess 37. The projection-corresponding hole 38 is provided in the shape of a spherical recess corresponding to the rocking allowance projection 36, so that the movable contact 24 is supported at one point, and the rocking allowance projection 36 serves as a fulcrum during sliding in any direction. Is allowed to swing and slides, so that a smooth sliding contact can be achieved.

In this case, a contactor for biasing the movable contactor 24 toward the contact point patterns P1 and P2 between the facing surfaces of the movable contactor 24 and the slider 25 for fitting and holding the movable contactor 24. The biasing springs 24a, 24a are interposed.

The contact urging spring 24a is provided in a F shape, is housed in an engagement recess 37 on the lower surface of the slider 25, and has a through hole for allowing the swingable protrusion 36 to penetrate therethrough at the center of the F shape. 24b is formed, and an arcuate projection 24c is formed at the central bent portion. The arcuate projection 24c is engaged with the inner surface groove 24d of the engaging recess 37 of the slider.

As a result, the movable contact 24 is brought into contact with the contact patterns P1 and P2 with a constant urging pressure by the contact urging spring 24a, and the movable contact 24 and the contact pattern P1, It is possible to obtain a contact structure with high contact stability in which the contact surface with P2 is surely urged and contacted.

By the way, the partition walls 34 of the sliders 25, 25
Slider return springs 26, 26 are interposed in a compressed state between the wall surface on the opposite side to the inner wall surface of the switch case 23, and the sliders 25, 25 are separated from each other by a partition wall 34 in the central portion.
The sliders on the side of the first contact point pattern P1 are set by restricting the position from the center which is biased to the side, and set the biased and moved positions to the OFF positions, respectively, and conversely resist the biasing force. The sliding position where 25 is slid is set to a position corresponding to the ON contact on the positive electrode side, and similarly, the sliding position where the slider 25 on the second contact pattern P2 side is slid against the biasing force is the opposite pole side. Is set to the position corresponding to the ON contact.

For this reason, the sliders 25, 25 are usually
It is biased by the slider return springs 26, 26 and is in the neutral OFF position, and the switching operation is performed from this state to either the ON position of the positive polarity or the reverse polarity.

Further, on the upper surfaces of the sliders 25, 25,
Fitting recess 3 for fitting leaf springs 27, 27 described later
9 and 39 are formed, and a slide shaft 4 for accommodating the slider operating rod 21 of the switch button is formed at the center of the upper surface.
0 and 40 are projected.

The above-mentioned leaf springs 27, 27 are provided in a F shape and are housed in the fitting recess 39 of the slider, and a through hole 41 penetrating the slide shaft 40 is formed at the center of the F shape. An arcuate protrusion 42 is formed in the central bent portion so as to project.
The arc-shaped protrusion 42 is engaged with the touch-sensitive portion of the switch cover 28 described later.

The above-mentioned switch cover 28 is provided in a box shape with one surface open, and a pair of left and right sensations corresponding to the above-mentioned arcuate projections 42, 42 are provided in the sliding corresponding direction of the one surface of the box shape. Parts 43, 43 are engraved, and the touch-sensitive part 4
3 is engaged with the above-mentioned arcuate projection 42 when it slides, so that the slider 25 can be positioned accurately, the polarity of the switch is switched by sliding, and the elastic action of the leaf spring 27 is provided. The operation feeling at the time of the vigorous engagement at this time is transmitted to the above-described switch buttons 14 to 18 via.

Further, slide holes 44, 44 for allowing the above-mentioned slide shafts 40, 40 to project upward are penetratingly provided on the opposing wall surface of the switch cover 28, and further connecting pieces 45 are vertically provided on the outer periphery. The fitting recess 46 formed on the inner surface side of the connecting pieces 45 ... Fits with the fitting protrusion 47 formed on the outer periphery of the switch case 23, so that the switch cover 28 is a plate. While covering the switch case 23 with the spring 27 slightly compressed from above,
It is integrally connected to the switch case 23.

The lower end of the slider operating rod 21 described above is interposed between the slide shafts 40, 40 projecting to the left and right, and one of the slides is moved by the movement of the slider operating rod 21 located in the middle thereof in the sliding direction. One slider 25 is slid through the shaft 40.

The vehicle-mounted switch thus constructed is
It is provided exclusively for the driver, and by operating any switch button 14 to 17 from the driver's seat, the window opening / closing operation corresponding to the input signal of the switch button is performed.
If necessary, the fifth switch button 18 is pressed to lock or unlock the window opening / closing operation.

In the vehicle-mounted switch having this structure, the contact portion 5
7, that is, contact pieces 29, 29a, 30, 31, 3
Since members such as 2, 33, the movable contactor 24, and the slider 25 are built in the switch unit 22 in advance, the switch unit 2 is mounted on the printed circuit board 47.
The two contact pieces 29a, 30, 31, 32, 33 need only be pushed into the board and soldered, and stable attachment can be performed, and the internal contact portion 57 is not affected by external force or shock, and is reliable. Switch operation can be expected.

Further, the contact piece 29 of the switch unit 22
Since the electrical connection between the a, 30, 31, 32, 33 and the connector 49 can be made by the conductive pattern 50 of the printed circuit board 47, a connecting means by a separate member such as a metal plate or an electric wire is not required, and it can be assembled. The workability is good, the assembly is simple and the production is efficient.

The switch operation is performed by the switch buttons 14-1.
By the operation of 7, the slide shaft 40 is moved by the slider operating rod 21,
Since any one of the sliders 40 is selectively pressed and moved, wear of the contact portion between the slider operating rod 21 and the slide shaft 40 hardly occurs.

Since the switch units 22 ... And the switch operation control circuit component 48 are mounted on the same printed circuit board 47, the space utilization efficiency is greatly improved and a small changeover switch can be manufactured.

In the correspondence between the configuration of the present invention and the above-described embodiment, the change-over switch of the present invention corresponds to the vehicle-mounted switch 11 of the embodiment, and hereinafter, similarly, the main body case is
The switch case corresponds to the body case 13, the switch buttons correspond to the switch buttons 14 to 17, the operating rod corresponds to the slider operating rod 21, the switch unit corresponds to the switch unit 22, and the slide shaft slides. The printed circuit board corresponds to the printed circuit board 47 corresponding to the shaft 40, and the switch operation control circuit component corresponds to the switch operation control circuit component 4
8 and the contact portion corresponds to the contact portion 57, but the present invention is not limited to the configuration of the above-described embodiment.

[Brief description of drawings]

FIG. 1 is an external perspective view of a vehicle-mounted switch.

FIG. 2 is an exploded perspective view of a vehicle-mounted switch.

FIG. 3 is an enlarged vertical cross-sectional view of a main part of a vehicle-mounted switch.

FIG. 4 is an exploded perspective view of a switch unit.

FIG. 5 is an enlarged sectional view of a switch unit.

FIG. 6 is an explanatory diagram of a contact pattern of the switch unit.

[Explanation of symbols]

 13 ... Main body case 14-17 ... Switch button 21 ... Slider operating rod 22 ... Switch unit 40 ... Slide shaft 47 ... Printed circuit board 48 ... Switch operation control circuit component 57 ... Contact part

Claims (2)

[Claims] 1. A switch unit for moving a slide shaft movable in opposite directions to perform a switch operation at an internal contact portion is mounted on a printed circuit board together with a switch operation control circuit component, and a conductive pattern of the printed circuit board. To electrically connect the switch unit and switch operation control circuit parts to the connector mounted on the printed circuit board,
A changeover switch in which a switch case is provided in a main body case for accommodating the printed circuit board, and an operating rod for transmitting the movement of the switch button to the slide shaft is provided. 2. A switch unit for selectively operating one of a pair of slide shafts movable in opposite directions to perform a switch operation at an internal contact portion on a printed circuit board together with a switch operation control circuit component. Implemented,
The switch unit and the switch operation control circuit component are electrically connected to the connector mounted on the printed circuit board by the conductive pattern of the printed circuit board, and a switch case is provided on the main body case for accommodating the printed circuit board. A changeover switch in which an operating rod for transmitting the movement of a switch button to the slide shaft is passed between the pair of slide shafts.