JPH087701A - Drive mechanism of switch - Google Patents

Abstract

PURPOSE:To provide a drive mechanism of a double action switch favorable for manufacturing at a low cost and in a small size, by making an arrangement that the first and second switches are turned on with a sense of click when either of a pair pressure parts is pressed. CONSTITUTION:An operational lever 10 is tilted to one side, and either of a pair pressure parts is pressed, and thereby the first and second switches S1, S2 can be turned on with a sense of click. Because the sequence of the switches being turned on changes according to the lever tilting direction, four signals can be emitted from combination of two pressure parts provided on one operating lever 10 and two switches S1, S2. Therefore the number of switches can be reduced to half from the corresponding number in the conventional arrangement in which four switches are used corresponding to four sorts of signals. As a result, the size of the whole switch can be suppressed and also the circuit to be installed on each switch is simplified to lead to suppression of the cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to two switching operations accompanied by a click feeling by driving a driving unit in one direction.
The present invention relates to a switch drive mechanism capable of double action.

[0002]

2. Description of the Related Art FIG. 6 is a sectional view showing a conventional example of a double action seesaw switch equipped with a switch drive mechanism of this type, which is disclosed in Japanese Utility Model Laid-Open No. 60-35442. In the figure, reference numeral 1 denotes an operation lever, and the operation lever 1 is supported so as to be swingable about a support shaft 2 in the directions of arrows AB. Four pressing portions 1a, 1b, 1c, 1d are vertically provided on the back surface of the operating lever 1. Of these, two pressing portions 1a, 1b are the support shaft 2
The other two pressing portions 1c and 1d are provided on the right side of the support shaft 2 on the left side of the support shaft 2. Reference numeral 3 denotes a click rubber made of silicon rubber or the like, and the click rubber 3 is placed on the printed board 4. The click rubber 3 is provided with four convex portions 5, 6, 7, 8 corresponding to the pressing portions 1a to 1d, and the lower surface of each convex portion 5, 6, 7, 8 is movable. Contacts 5a, 6a, 7a, 8a are provided. Of these, the cylindrical portions 5b, 7 are provided on the tops of the two inner convex portions 5, 7.
b is formed, and both the cylindrical portions 5b and 7b are the pressing portions 1a,
The two outer convex portions 6 and 8 are elastically contacted with the lower surface of 1c, respectively, and are opposed to the lower surfaces of the pressing portions 1b and 1d at a predetermined interval. Further, fixed contacts 4a, 4b, 4c, 4d are provided on the surface of the printed circuit board 4 corresponding to the movable contacts 5a, 6a, 7a, 8a. First switch S
₁ is the second switch S ₂ with the movable contact 6a and the fixed contact 4b.
However, the movable switch 7a and the fixed contact 4c form a third switch S ₃
However, the movable switch 8a and the fixed contact 4d make the fourth switch S ₄
Are formed respectively.

In the seesaw switch constructed as described above, the operating lever 1 is normally held in the neutral position shown in FIG. 6 by receiving the elastic force from both the cylindrical portions 5b and 7b of the click rubber 3. In this case, the first to fourth switches S
₁ , S ₂ , S ₃ , and S ₄ are all off. Further, when the operation lever 1 is tilted in the direction of arrow A from the neutral state shown in FIG. 6, first, the pressing portion 1 a near the support shaft 2 becomes the cylindrical portion 5 of the convex portion 5.
By pressing b, the convex portion 5 is buckled and deformed to generate the first click feeling (moderation feeling), and the movable contact 5
a contacts the fixed contact 4a, and only the first switch S ₁ is turned on. When the operating lever 1 is further tilted in the direction of arrow A, the pressing portion 1b far from the support shaft 2 presses the convex portion 6,
Meanwhile, the pressing portion 1a crushes the cylindrical portion 5b of the convex portion 5,
As a result, the convex portion 6 buckles and deforms to generate a second click sensation, and the movable contact 6a contacts the fixed contact 4b to turn on the second switch S ₂ , that is, the first switch S.
_{Both 1} and the second switch S ₂ are turned on.

On the contrary, when the operation lever 1 is tilted in the direction of arrow B from the neutral state shown in FIG. 6, first, the pressing portion 1c close to the support shaft 2 presses the cylindrical portion 7b of the convex portion 1 to The second click sensation is generated, the movable contact 7a comes into contact with the fixed contact 4c, and only the third switch S ₃ is turned on. When the operating lever 1 is further tilted in the direction of the arrow B, the pressing portion 1d far from the support shaft 2 presses the convex portion 8 to generate a second click feeling, and the movable contact 8a moves to the fixed contact 4
By contacting d, the fourth switch S ₄ and the third switch S ₃ are turned on.

[0005]

In the above-mentioned conventional switch, by tilting the operation lever 1 in one direction, the two switches are turned on in an interlocking manner with a click feeling. Therefore, if such a switch is applied as an input switch of a vehicle-mounted power window device, a manual operation can be performed at the first switching.
The automatic operation can be performed by the second switching. Therefore, for example, if the arrow A direction is the UP side and the arrow B direction is the DOWN side, the operating lever 1 is tilted in the arrow A direction and the manual UP is performed while the first switch S ₁ is on.
Then, when the second switch S ₂ is turned on after the first switch S ₁ , the automatic UP can be performed. On the contrary, the operation lever 1 is tilted in the direction of the arrow B and the third switch is turned on. Manual DOWN can be performed while S ₃ is on, and auto DOWN can be performed when the fourth switch S ₄ is turned on subsequent to the third switch S ₃ .

However, in order to realize such a double action, two switches operated by tilting of the operating lever 1 are required for each side, and a total of four switches S _{1 to} S ₄ are required. As a result, There is a problem that not only the switch becomes large, but also the circuits attached to the switches S _{1 to} S ₄ become complicated and the cost becomes high.

The present invention has been made in view of the above-mentioned circumstances of the prior art, and an object thereof is to provide a drive mechanism for a switch with a double action, which is inexpensive and suitable for miniaturization.

[0008]

In order to achieve the above object, the present invention is provided with a pressed portion, and a switch is turned on / off by pressing and releasing the pressed portion. And a second switch, an action bar bridging the pressed part of the first switch and the pressed part of the second switch, and the pressed parts of the first and second switches of the action bar are located. And a pair of pressing portions located on the opposite side of the surface and between the pressed portions of the first and second switches.

[0009]

When one of the pressing portions is pressed, the action bar rotates about the pressed portion of the second switch as a fulcrum,
As a result, the pressed portion of the first switch is pressed by the action bar, and the first switch is turned on with the first click feeling. When one of the pressing parts is further pressed, the action bar cannot press the pressed part of the first switch any more, and therefore the action bar rotates in the opposite direction with the pressed part of the first switch as a fulcrum, and thus the second part is pressed. The pressed part of the switch is pressed by the action bar, and the second switch
It is turned on with the click feeling of the first time.

When the other pressing portion is pressed, the operation opposite to the above is performed. First, the second switch is turned on with a first click feeling, and when the pressing portion is further pressed. The first switch is turned on with a second click feeling.

Therefore, when applied as an input switch of a vehicle-mounted power window device, for example, when only the first switch is on, the manual UP is turned on, when only the second switch is turned on, the manual DOWN is turned on, and the first switch is turned on. Auto UP when the second switch is turned on,
If the time when the first switch is turned on after the second switch is turned on is auto DOWN, these four types of processing can be realized by the first switch and the second switch.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view of a seesaw switch according to an embodiment of the present invention, FIG. 2 is an operation explanatory view when the seesaw switch of FIG. 1 is tilted in one direction, and FIG. 3 is a seesaw switch of FIG. 1 is tilted in the other direction. FIG. 4 is a circuit block diagram of the power window device, and FIG. 5 is a flowchart showing an operation procedure of the CPU of FIG.

In FIGS. 1 to 3, reference numeral 10 denotes an operating lever, and the operating lever 10 has an arrow A centered on a spindle 11.
-It is supported so that it can swing in the B direction. A first pressing protrusion (one pressing portion) 12 and a second pressing protrusion (the other pressing portion) 13 are vertically provided on the back surface of the operation lever 10, and these pressing protrusions 12.13 form the support shaft. It is distributed to the left and right of 11. Reference numeral 14 indicates a click rubber, and the click rubber 14 is placed on the printed board 15. The click rubber 14 has a first protrusion (first
The pressed portion of the switch) 16 and the second convex portion (the pressed portion of the second switch) 17 are provided.
Movable contacts 18a and 18b are formed on the lower surfaces of 6 and 17, respectively. On the other hand, a pair of fixed contacts 19a and 19b are formed on the surface of the printed circuit board 15, and the first switch S ₁ is a pair of the movable contact 18a and the fixed contact 19a, and the pair of the movable contact 18b and the fixed contact 19b is a pair. The second switch S ₂ is thus formed. Further, reference numeral 20 denotes an action bar, which is made of a highly rigid material such as synthetic resin or metal. The action bar 20 is placed on the convex portions 16 and 17 so as to bridge them, and the pressing protrusions 12 and 13 are in contact with the upper surface of the action bar 20.

In the seesaw switch having such a structure, the operating lever 10 is normally held in the neutral position shown in FIG. 1 by receiving the elastic force from both the convex portions 16 and 17 of the click rubber 14. If the first switch S ₁ and the second switch
Both switches S ₂ are off.

When the operating lever 10 is tilted in the direction of arrow A from the neutral state shown in FIG. 1, this rotational force is transmitted from the first pressing protrusion 12 to the action bar 20 and, as shown in FIG. The bar 20 rotates in the direction of arrow C with the second convex portion 17 as a fulcrum, and presses the first convex portion 16. As a result, the first convex portion 16 buckles and deforms to generate the first click sensation, and the movable contact 18a contacts the fixed contact 19a to turn on the first switch S ₁ . When the operating lever 10 is further tilted in the direction of the arrow A, the first pressing protrusion 12 further presses the action bar 20, but the action bar 20 cannot press the first convex portion 16 any more, so that FIG. As shown in FIG. 5, the action bar 20 has an arrow D with the first convex portion 16 as a fulcrum.
It rotates in the direction and presses the second convex portion 17. As a result, the second convex portion 17 buckles and deforms to generate a second click sensation, and the movable contact 18b comes into contact with the fixed contact 19b so that the second switch S ₂ is also turned on. That is,
When the operating lever 10 is tilted in the direction of arrow A, after the first switch S ₁ is turned on with the first click sensation, the second switch S is further activated with the second click sensation.
₂ turns on.

On the contrary, when the operation lever 10 is tilted in the direction of arrow B from the neutral state shown in FIG.
As shown in (a), the second pressing protrusion 13 presses the action bar 20, so that the action bar 20 moves to the first convex portion 1.
It rotates in the direction of arrow D with 6 as a fulcrum, and presses the second convex portion 17. As a result, the second convex portion 17 buckles and deforms to generate a first click feeling, and the movable contact 18b
Comes into contact with the fixed contact 19b to turn on the second switch S ₂ . When the operation lever 10 is further tilted in the direction of arrow B, the second pressing protrusion 13 is further moved to the action bar 20.
However, since the action bar 20 cannot press the second convex portion 17 any more, as shown in FIG.
The action bar 20 rotates in the direction of arrow C with the second convex portion 17 as a fulcrum, and presses the first convex portion 16. As a result, the first convex portion 16 buckles and deforms to generate a second click sensation, and the movable contact 18a moves to the fixed contact 19a.
And the first switch S ₁ is also turned on. That is, if the operation lever 10 is tilted in the direction of arrow B,
After the second switch S ₂ is turned on with the second click sensation, the first switch S ₁ is turned on with the second click sensation.

Next, the operation when the seesaw switch according to the above embodiment is applied to the input switch of the vehicle-mounted power window device will be described. In this case, as shown in FIG. 4, the signals output from the first and second switches S ₁ and S ₂ are read by the CPU 21, and the CPU 21 performs the processing described below based on these signals to drive the motor 22.
4 kinds of control signals are sent to. Then, the motor 22 rotates in either forward or reverse directions based on these control signals. For rotation in the forward direction, for example, a manual U for raising the window only while the switch is turned on.
P operation and auto UP operation that automatically raises the window when the switch is turned on once, and for reverse rotation, manual DOWN operation that lowers the window only while the switch is turned on, and switch When is turned on once, an automatic DOWN operation for automatically lowering the window is performed.

That is, as shown in FIG.
21 reads the switch for the first time in S-1, and determines the on / off state of the first and second switches S ₁ and S ₂ . Here, when the first switch S ₁ is on and the second switch S ₂ is off, that is, in the state of FIG. 2A, the process goes from S-2 to S-3 and the above-mentioned manual UP
Perform processing. Subsequently, in S-4, the second switch reading is performed, and in S-5, if the first switch S ₁ remains on and the second switch S ₂ remains off, the process returns to S-3, and the manual UP process is performed again. I do. If NO in S-5, go to S-6, and in S-6, switch the first and second switches S-6.
_When both ₁ and S ₂ are on, that is, in the state shown in FIG. 2B, the process goes to S-7 and the above-mentioned automatic UP process is performed. If both the first and second switches S ₁ and S ₂ are turned off in S-6, that is, if the state of FIG. 2A is returned to the neutral position of FIG. 1, the process returns to S-1.

On the other hand, if the first switch S ₁ is not on in S-2, the process goes to S-8, where it is determined whether the first switch S ₁ is off and the second switch S ₂ is on. To be judged. NO in S-8, that is, both switches S ₁ ,
If both S ₂ are off and in the neutral state in FIG. 1, the process returns to S-1, and if YES, that is, in the state in FIG. 3A, the process proceeds to S-9 to perform the above-mentioned manual DOWN process. . Then, in S-10, the second switch reading is performed, and in S-11, if the first switch S ₁ is off and the second switch S ₂ is still on, the process returns to S-9 and the manual DOWN process is performed again. I do. NO in S-11
In the case of S-12, the first and second switches S ₁ and S ₂ are both turned on in S-12, that is, in the state of FIG. Perform processing. Further, when both the first and second switches S ₁ and S ₂ are off in S-12, that is, when the state of FIG. 3A is returned to the neutral position of FIG. 1, the process returns to S-1.

As described above, in the above embodiment, the operation lever 10 is tilted in one direction, and one of the pressing portions is pressed, whereby the first and second switches S ₁ and S ₂ are pressed.
Can be operated with a click feeling, and the order in which the first and second switches S ₁ and S ₂ are turned on changes depending on the tilting direction of the operating lever 10.
Four types of signals can be output from a combination of a pair of pressing portions provided on one operating lever 10 and two switches S ₁ and S ₂ . Therefore, the number of switches can be halved as compared with the conventional example in which four switches are used for four types of signals, and as a result, not only the size of the seesaw switch can be reduced, but also the size of the seesaw switch can be reduced. The circuit attached to each switch is also simplified, and the cost can be reduced.

In the above embodiment, the movable contacts 18a, 18b forming the first and second switches S ₁ , S ₂ and the fixed contacts 19a, 19b are provided on the click rubber 14 and the printed circuit board 15, respectively. Although the case has been described, a switch called a membrane switch in which each of these contacts is provided on a film may be used, and the membrane switch may be pressed and driven by each of the convex portions 16 and 17.

Further, in the above embodiment, the case where the click rubber 14 made of a rubber material is used as the click member has been described. However, instead of this, a click member formed by forming an elastic metal plate into a bowl shape may be used. It is possible.

[0023]

As described above, according to the present invention,
By pressing one of the pair of pressing parts, the first and second switches are both sequentially turned on with a click feeling, and the order in which both switches are turned on changes depending on the selection of the pressing parts. Thus, it is possible to provide a drive mechanism for a switch with double action, which is suitable for downsizing.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a neutral state of a seesaw switch according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of an operation on one side of the seesaw switch of FIG.

FIG. 3 is an operation explanatory view of the seesaw switch of FIG. 1 on the other side.

FIG. 4 is a circuit block diagram of an in-vehicle power window device to which the seesaw switch of FIG. 1 is applied.

5 is a flowchart showing the operation procedure of FIG.

FIG. 6 is a cross-sectional view of a switch with double action according to a conventional example.

[Explanation of symbols]

10 Operation Lever 11 Spindle 12 First Pressing Protrusion (One Pressing Part) 13 Second Pressing Protrusion (Other Pressing Part) 14 Click Rubber 15 Printed Circuit Board 16 First Convex Part (Pressed Part of First Switch) ) 17 2nd convex part (pressed part of 2nd switch) 18a, 18b Movable contact 19a, 19b Fixed contact 20 Action bar S ₁ 1st switch S ₂ 2nd switch

Claims (1)

[Claims] 1. A first and a second switch, each of which is provided with a pressed portion and whose switch is turned on and off by pressing and releasing the pressed portion, and the pressed portion of the first switch and the switch. An action bar bridging the pressed portion of the second switch, and the first and second action bars located on the opposite side of the surface of the action bar on which the pressed portions of the first and second switches are located. A switch driving mechanism, comprising: a pair of pressing portions located between pressed portions of the switch.