JP3367654B2 - Key switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention
Hold the link member that guides and supports the vertical movement of
The key switch device provided on the
-When performing maintenance on the switch device,
While maintaining the engagement state between the key top and the link member,
Key that can be easily removed from the link member only
The present invention relates to a switch device. [0002] 2. Description of the Related Art Conventionally, various key switch devices have been proposed.
In such key switch devices, general
Hold the key stem hanging from the back of the key top to the holder
Slide guide up and down by the key holder part formed on the plate
Was adopted. In a key switch device having such a configuration,
The part where the key stem slides and is guided by the key holder
The key operability is improved by making it larger, but the keyboard
We cannot cope with thinning, but on the other hand,
The key stem is slid by the key holder to respond to thinning.
If the part to be guided is made smaller, twisting will occur between them
Dilemma that key operability is reduced due to
There was. The present applicant has proposed such a conventional key switch.
Key stem and key ho
It is possible to eliminate the rudder part and respond to the thinning of the keyboard
A key switch device with good key operability is disclosed in Japanese Patent Application Hei 3-
Proposed in the description and drawings attached to 330160
did. Such a key switch device is shown in FIGS.
You. Patent application for detailed configuration of this key switch device
See the specification and drawings of Hei 3-330160
The outline will be described below. In FIG. 9, a key top 1 made of resin is
Two locking parts 2, 3 (each locking part)
2 and 3 respectively exist as a pair) locking hole 4 and locking groove 5
Locking portions 26, 2 of a resin holder plate 25 and
7 (a pair of each of the locking portions 26 and 27 exist)
Guide support member disposed between stop groove 28 and locking hole 29
6 (consisting of two resin link members 7, 8
The locking pins 13 and 14 provided at one end of the member 7 have locking holes.
4, locking pins 15, 16 provided at the other end are provided with locking grooves 2.
8 and is provided at one end of the link member 8.
Locking pins 23 and 24 are provided in locking grooves 5 at the other end.
The stop pins 21 and 22 are locked in the locking holes 29).
Up and down. [0006] Axial support A of the link members 7 and 8
Is a flexible circuit board 3 supported on a support plate 32
0 is placed at the top of the rubber spring 31 placed on
When the key top 1 is depressed,
Switch operation by buckling rubber spring 31
Is what you do. The link member 7 is shown in FIG.
As described above, the two base ends 10 and 11 are integrally formed at both ends of the base 9.
It is formed. From one side of the central part of the base 9
Has a shaft 12 extending therefrom.
Is supported by a shaft hole 20 formed in one of the link members 8.
In addition, locking is performed from the side surfaces of both end extending portions 10A of the base end portion 10.
The pins 13 and 14 are extended, and the locking pins 13 and
Reference numeral 14 denotes an engaging portion formed in the locking portion 2 of the key top 1 described above.
It is locked in the stop hole 4. Further, the base end 11 is flat.
It is formed in a U-shape in a plan view, and has both ends extending portions 11 in a U-shape.
Locking pins 15 and 16 similar to the above extend from the side of A.
Have been. The locking pins 15 and 16 are used for holder play.
The locking portion 26 is formed on the locking portion 26. The link member 8 is provided as shown in FIG.
And two base ends 18, 19 at both ends of the base 17,
It is formed. The shaft hole 2 is provided at the center of the base 17.
0 is drilled, and the shaft hole 20 has a link portion as described above.
The shaft 12 provided on the base 9 of the material 7 is inserted. Also,
The base end portion 18 is formed in a U-shape in plan view, and has a U-shape.
Locking pins 21 and 22 extend from both end extending portions 18A.
I have. The locking pins 21 and 22 are attached to the holder plate 25.
It is locked by the formed locking portion 27. Further, the front end portion 19A of the base end portion 19 extends forward.
The same locking pins 23 and 24 as described above are extended,
The locking pins 23 and 24 are locking portions of the key top 1 described above.
3 slidably locked in the locking groove 5 formed in
is there. As described above, the guide support member 6 has one side.
The shaft 12 formed on the base 9 of the link member 7 of the
Through the shaft hole 20 formed in the base 17 of the link member 8.
The two link members 7 and 8 are connected to the shaft 12 and the shaft.
It is mutually rotatable via the shaft support A formed by the hole 20.
You. According to such a key switch device, a thin keyboard is provided.
Key switch device with good key operability while responding to molding
Is realized. [0011] SUMMARY OF THE INVENTION
It was described in the specification and drawings of Japanese Patent Application No. 3-330160.
In the key switch device, the holder plate 25 and the two
Assembling with the guide support member 6 comprising the link members 7 and 8;
And assembly of the guide support member 6 and the key top 1 is simple and easy.
However, there is a problem that it cannot be easily performed. That is, the key switch device is assembled.
First, the link member 7 and the link member 8 are
After assembling into the guide support member 6, the base of the link member 8 is
Hold the two locking pins 21 and 22 at the end 18 by holder play.
And press-fit into the locking hole 29 of the locking portion 27 of the lock 25. This and
Pressure on the locking holes 29 of the locking pins 21 and 22.
Enter the end extension 18A, the resin of each locking pin 21 and 22
This is performed by using elasticity, but each of the locking pins 21 and 22 is
It is difficult to position in the locking hole 29 and therefore press-fit
The work is likely to be unstable. Therefore, this press fit
The work was rather complicated. Further, at the base end 11 of the link member 7,
Pressing the locking pins 15 and 16 into the locking groove 28 of the locking portion 26
You. Even in such a case, the press-fitting operation is performed by the end extension 11A,
The locking pins 15 and 16 are made using the mutual resin elasticity.
From the above, it is undeniable that it is a complicated work as above
Was something. Thus, each link member 7, 8 and the holder
The connection work of the rate 25 with the locking portions 27 and 26 is completed.
After that, each of the locking pins 13, 1
Work for press-fitting the locking member 4 into the locking hole 4 of the locking portion 2 and a link
The locking pins 23 and 24 of the member 8 are locked with the locking portion 3.
An operation of press-fitting into the groove 5 is performed. Both press-fitting operations are also
Between the locking pins 13, 14, 23, 24 and the locking portions 2, 3
Since it is performed using mutual resin elasticity,
The complicated operation was the same as the above operation. As described above, the aforementioned Japanese Patent Application No. Hei.
No. 0 key switch device described in the specification and drawings
The link members 7 and 8 of the guide support member 6 and the holder
Each connection work with double plate 25 and key top 1
All are performed using the resin elasticity of each member,
In addition, alignment of each locking pin 13 and the like with each locking hole 4 and the like.
Key switch, it is necessary to
Complicated press-fitting work must be performed throughout the assembly
There was a problem that it was necessary. The specification of Japanese Patent Application No. 3-330160 is disclosed.
And the key switch device described in the drawings,
When performing maintenance, etc., after the maintenance
Key top from key switch device in consideration of attaching work etc.
You may only want to remove it. In such a case, the key
In the switch device, as described above,
The key switch device is assembled once
And the locking hole 4 in the locking portion 2 of the key top 1 and the link
Locking state of member 7 with locking pins 13 and 14, and locking
A locking groove 5 in the portion 3 and a locking pin 23 of the link member 8;
The state of engagement with 24 is in a very strong state. As well
The locking groove 2 in the locking portion 26 of the holder plate 25
8 and the locking pins 15 and 16 of the link member 7 are locked,
And, between the locking hole 29 in the locking portion 27 and the link member 8
The locking state with the locking pins 21 and 22 is also quite strong.
It is in. At this time, the locking pins 23 of the link member 8
The locking state between the locking groove 5 and the locking groove 5 is such that the locking pins 23 and 24 are
Since the slot-shaped locking groove 5 can slide, the sliding direction is
It can be said that the link member 7 is relatively loose,
The locking state between the locking pins 13 and 14 and the locking hole 4 is determined by the locking pin.
Fittings 13 and 14 so that they can be
In a state where In addition, the locking pin 15 of the link member 7,
The locking state between the locking groove 16 and the locking groove 28 is determined by the locking pins 15 and 16.
Can slide in the elongated groove 28, so that the sliding direction
Can be said to be relatively loose, but the link member
The locking state between the locking pins 21 and 22 and the locking hole 29 is as follows.
The locking pins 21 and 22 are mutually locked to be rotatably locked.
It is in the state of being set. Therefore, the key top 1 is connected as shown in FIG.
When the link member 7 is further pulled upward from the non-pressed state,
And the link member 8 is holder play together with the key top 1.
It is conceivable that it will fall off
Damage to the link member 7 or link member 8
Is also conceivable. Therefore, when performing maintenance, etc.,
Only the key top 1 is fixed to the locking portion 2 of the holder plate 25.
Remove from link members 7, 8 locked to 6, 27
And it was quite difficult. The present invention has been made to solve the above problems.
Assembled with key top and link member
Can be performed easily, and a key switch
When performing maintenance such as installation, the holder member and the link
While keeping the engagement with the material, only the key top is
Key switch device that can be easily removed from the lock member
The purpose is to provide a device. [0020] [MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
The key switch device according to claim 1 is a key top device.
And a holder member disposed below the keytop,
It has a locking member at each end, under the key top
Surface and the holder member, and
Guide up and downAnd connected to each other
WasA first link member and a second link member,
A key that performs switching operation in accordance with the vertical movement of the key top.
A switch device, wherein the key top is urged upward.
Cup-shaped rubber spring and the holder member
Formed within the holder member and within the thickness of the holder member.
A through-hole for housing and disposing a lower peripheral portion of the
Material, and the first link memberLowerTransfer of locking member
A lower sliding engagement portion having a regulation portion for regulating movement,E
A lower locking portion provided on the second member,
A lower rotation locking portion for rotatably locking the material,The Quito
The first link memberUpper sideLocking member
PivotableLockingWhile expanding downward
First locking guide part opened so thatUpper pivoter with
With the stop, Provided on the key top, the second link portion
Slidably lock the upper locking member of the
A second locking guide having a slope extending toward the bottom is formed.
With the upper sliding stopperWithOn the first link member
The side locking member is located above the keytop via the first locking guide.
While being snapped into the rotation locking portion, the second
The upper locking member of the link member is keyed through the second locking guide.
It is snapped into the upper sliding locking part of the top,The key
When the key top is further raised from the state where the top is not pressed
On the basis of the regulating action of the regulating portion of the lower sliding engagement portion,
Of the first link memberLowerEngagement between locking member and lower sliding locking portion
Key state while maintaining the matching stateUpper rotation locking partWhen
Of the first link memberUpper sideThe engagement of the locking member is releasedToto
The first link member and the second link member are rotatable.
The lower link of the second link member is based on the connection.
While the engagement state between the stop member and the lower rotation locking portion is maintained,
Upper sliding engagement of key top and upper link of second link member
The engagement with the stop member is released. [0021] According to the key switch device of the present invention having the above structure,
According to this, when assembling the key switch device, the first link portion is used.
LumberLowerThe locking member slides on the lower sliding locking part of the holder member
While being locked,LowerThe locking member
Holder memberLower rotation locking partIs connected and locked. next,
A key top is placed on the first link member and the second link member
And press the key top lightly downwards.
MaterialUpper sideThe locking member, Opened as you go down
Through the first locking guide,Upper rotation locking part of key top
ToSnapped inWhile being locked by rotation,
Link memberUpper sideThe locking member, A slope extending downward
Key top sliding through a second locking guide having
Sliding by the locking part. At this time, in particular, the first link memberUpper sidePerson in charge
Rotate stop memberPossibleUpper rotation lock of key top to lock
In the department,The first is open to spread downward
(1) a locking guide portion is formed, and a second link member
Upper part of the key top that slidably locks the upper locking member of the
The sliding engagement portion has a slope having a slope that extends downward.
2 locking guideIs formed,First link
Each upper side of the material and the second link memberThe locking member, Key top
When pressing the first locking guide portion and the second locking guide portion respectively
Snap-in to the upper rotation locking part and upper sliding locking part via
And the upper locking members of both link members areEasy to insert and lock
It is. Also, the key switch assembled as described above
In the device, the inverted cup shape that urges the key top upward
The lower edge of the rubber spring is the thickness of the holder
In the through hole formed in the holder member.
The keystroke amount of the keytop based on this configuration
Key by effectively utilizing the thickness of the holder member while maintaining
-Reduce the overall height of the switch device to make it thinner
Becomes possible. Further, the upper rotation locking portionIs going down
Therefore, the first locking guide portion opened so as to expand.Formed
In addition to the above, the lower sliding locking part on the holder member side
The first link member in the non-pressed state of the key top
ofLowerAbuts the locking member,LowerRestricts movement of locking member
Regulation part is providedAnd the upper sliding locking part To
Is a second locking guide having a slope that extends downward.
Is formed, and the first link member and the second
The link member and the link member are rotatably connected to each other.Is that
Key switch during maintenance of the key switch device, etc.
When the key top is pulled up from the non-pressed state of the
Based on the regulatory action of the control departmentUnder the first link memberLocking member
Movement is regulatedLower sideLocking member from lower sliding lock
The engaged state is maintained without coming off. Against this
Then, of the first link memberUpper sideThe locking member is the upper rotation locking part
ofFirst locking guideEasily detached fromYou. In addition, the first link
The member and the second link member are rotatably connected to each other.
And the lower locking member and the lower link member of the first link member as described above.
The engagement state with the sliding engagement part is maintained.
And a lower locking member and a lower rotation locking portion of the second link member.
The engagement state of the second ring is also maintained.
The upper locking member of the locking member is moved upward through the second locking guide.
From the dynamic locking partIt is easy to come off. Therefore, based on the regulation action of the regulation section,First Li
Lower side of the link memberEngagement between locking member and lower sliding locking portion
While the match state is maintained,Upper sideEngagement of locking member with locking groove
Is canceled,Lower locking member of second link member
While the engagement state between the and the lower rotation locking portion is maintained, the upper
The engagement between the stop member and the upper sliding engagement portion is released, and this connection
FruitOnly key top can be removed very easily
Becomes This allows key tops to be
Easy to remove and maintain key switch device
Can be easily performed. Key switch assembled as described above
When switching operation is performed by the device,
Pressed. Then, when the key is pressed, the key top
Guided and supported downward by the link member and the second link member
You. The switching operation is performed according to the depression of the key top.
The work is done. [0026] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described.
This will be described in detail with reference to the drawings. FIG. 1 illustrates this embodiment.
FIG. 3 is a vertical sectional view of the key switch device, showing a key top 4;
1 is molded from a synthetic resin such as ABS resin.
Letters such as alphabets are formed on the upper surface by printing etc.
Have been. From the back of the key top 41, two
Locking portions 42, 43 (each locking portion 42, 43
Each pair exists in the direction perpendicular to the plane, and in FIG.
Of the key top 41 body facing downward
And are provided integrally. Here, the locking portion 42 side (FIG. 1)
The vertical width of the key top 41 at the left side in FIG.
As shown in FIG. 1, on the locking portion 43 side (right side in FIG. 1)
The width is larger than the top and bottom width. The locking portion 42 has two link portions to be described later.
One end of one link member 47 of the members 47 and 48
The locking groove 44 for rotatably locking the formed locking rod 53 is provided.
And the locking portion 43 has the other link
The locking pins 63 and 64 formed at one end of the member 48 are
A locking groove 45 is formed so as to slidably lock in a direction.
You. As shown in FIG. 1, the locking portion 42 is open at the bottom.
Composed of a pair of resin pieces 44B having a locking groove 44
The locking groove 44 is provided above the locking groove 44.
The cut portion 44C is formed continuously with the cut portion 44C. Said
As described above, the vertical width of the key top 41 on the locking portion 42 side is large.
Since it is formed sharply, the length of each resin piece 44B is
It is possible to make it larger,
Since the cut portion 44C is formed, each resin piece
Notch combined with the ability to increase the length of 44C
The resin elasticity of each resin piece 44 is increased based on the portion 44C.
You. In the locking groove 44,
It continues and gradually spreads down
An open locking guide portion 44A is formed as shown in FIG.
The locking guide portion 44A is provided with the locking rod 53 of the link member 47.
When snapping into the locking groove 44
It is just a guide. Further, the locking groove of the locking portion 43
At the lower part of 45, a slope that expands downward is formed
A locking guide portion 45A is provided.
The stop guide portion 45A is provided with the locking pins 63, 6 of the link member 48.
4 snaps into the locking groove 45
It will guide you towards. Below the key top 41, a key top 1 is provided.
A guide support member 46 for guiding and supporting the vertical movement of
The guide support member 46 includes two link members 4.
7 and 48. One of the link members 47 is, as shown in FIG.
Are formed in a U-shape in plan view.
And a locking bar 53 is integrally formed between one end of each plate-like body 49.
And at the other end of each plate-like body 49
The locking pins 55 and 56 are formed. Heel
The locking rod 53 is connected to the locking portion 42 via the locking guide portion 44A.
Are snapped into the locking grooves 44 of the
55 and 56 are formed on a holder plate 65 described later.
Locked by locking portion 66. Further, on the side of each plate-like body 49 facing each other,
A pair of shafts 52 oppose each other from the central position
It is provided in the position where it does. Each of these shaft bodies 52 will be described later.
A shaft hole 60 formed in the other link member 48
Is done. The locking bar 53 of the link member 47 and each locking pin
55 and 56 are set so that the distance from each shaft 52 is equal.
It is configured. Further, the other link member 48 is shown in FIG.
As shown in FIG.
A locking rod 61 is integrally formed between the ends, and
Locking pins 63 and 64 are formed at the other end of the body 57, respectively.
It is made. Both ends of this locking rod 61 are
It is locked by the locking portion 67 of the rudder plate 65.
The locking pins 63 and 64 are connected to the locking portion 4 via the locking guide portion 45A.
3 is snapped into the locking groove 45. In addition, outside each plate-like body 57,
Shaft holes 60 are formed at opposing central positions.
Each of the shaft holes 60 has a plate of the link member 47.
Each shaft 52 formed on the body 49 is rotatably fitted.
You. As a result, both link members 47 and 48 are
And can be rotated crossing each other through the shaft hole 60.
The shaft support A is formed by each shaft body 52 and the shaft hole 60.
Is done. The locking rod 61 of the link member 48 and each locking pin
So that the distance from the shaft hole 60 is equal.
It is configured. Further, the center position of each plate
Between them, it is placed on the upper surface of a rubber spring 71 described later.
When the key top 41 is pressed, each link member 4
The rubber spring 71 is moved with the mutual rotation of
A push rod 58 that pushes downward is provided. This
When the key top 41 is pressed, the pressing rod 58 is
A device that performs a switching operation by pressing a spring 71
It is. Next, below the guide support member 46, a resin
The holder plate 65 is provided, and the holder
The locking portion 6 corresponding to each switch device is provided on the plate 65.
6, 67 (Each locking portion 66, 67 is provided with two each.
However, in FIG. 1, one locking portion 66, 6
7) is formed. The locking portion 66 is connected to the right (outside) in FIG.
Side) is formed with a sliding groove 68 having an open side.
The link member 47 is formed in the sliding groove 68 of the locking portion 66.
The formed locking pins 55 and 56 are inserted. Here,
Closing the locking portion 66 on the side opposite to the open side of the dynamic groove 68
The closing wall 68A is in a non-pressed state of the key top 41 (see FIG. 1).
)), Above a rubber spring 71 described later.
Of the link member 47 in cooperation with the urging force of
6 and acts to regulate the movement of the locking pins 55 and 56.
I do. The locking portion 67 is slidable by the locking portion 66.
Like the groove 68, a sliding groove whose right side in FIG.
69 is formed, and in the sliding groove 69, FIG.
Locking projection 69A having an inclined surface 69B on the right side in FIG.
Is formed. In the sliding groove 69 of the locking portion 67
Are both ends of a locking rod 61 formed on the link member 48
Is inserted. Here, as shown in FIG.
9A, wall portion 69 on the opposite side to inclined surface 69B
C is in the non-pressed state of the key top 41 (see FIG. 1).
And the upward biasing force of the rubber spring 71 described later.
It cooperates with the lock bar 61 of the link member 48 to make contact with the lock bar 61.
Acts to regulate the movement of the 61 in the sliding direction (horizontal direction).
Now. Further, on the holder plate 65, both locking portions
66, 67, each plate-like body 4 in the link member 47
9, a pair of guide walls 73 (see FIG. 4) for guiding the outer side surface.
It is erected. Thus, the guide support member 46
Locking pins 55 and 56 of link member 47 and link member 48
Of the sliding groove 68 and the sliding groove 69 respectively.
From the release side, the outer surface of each plate-like body 49 of the link member 47 is
Slide it over the holder plate 65 while guiding it to the inner wall 73.
Each locking pin 55, 56 and locking
A rod 61 is inserted into each of the sliding grooves 68, 69.
You. Then, at the time of such insertion, the locking rod 61 is inserted into the sliding groove 69.
After having passed over the locking projection 69A, the locking rod 6
1 does not come off the sliding groove 69,
Each locking bar 61 and locking pins 55 and 56 are respectively slidable.
It is rotatably held in the moving grooves 69 and 68. The holder plate 6 configured as described above
Below each key switch 5, as shown in FIG.
In response, a flexible circuit having the switch electrode 70A formed thereon.
A circuit board 70 is disposed, and the holder plate 6
5 has a switch electrode 70AToCorresponding through-hole 80 formed
Have been. In this through hole 80, an inverted cup shape
The lower peripheral edge portion 71B of the rubber spring 71 is housed and arranged.
Is placed on the flexible circuit board 70 so that
ing. Furthermore, the switch electrode 70A on the circuit board 70
A movable electrode is provided on the inner top wall of the rubber spring 71 in opposition.
71A is fixed. And rubber spring 7
A push rod 58 formed on the link member 48
Is arranged. Thus, when the key top 41 is pressed,
When the push rod 58 moves downward, the rubber spring 7
1 is pushed down by the push rod 58 and exceeds a certain pushing amount
The rubber spring 71 is buckled and the movable electrode 71A
And the switch electrode 70A on the flexible circuit board 70.
A switching operation is performed by contact
It is. Also, below the flexible circuit board 70,
Is provided with a switch support plate 72.
H support plate 72 is provided on each of circuit boards 70
This supports the holder plate 65. In the above configuration, the light passes through the center of the shaft support A.
Key located on the left side in FIG. 1 with respect to vertical line L
Locking portion 42 and holder plate formed on the back surface of top 41
The locking portions 67 formed on the rate 45 are respectively locked.
Locking groove 44 and locking rod 61 for rotatably locking rod 53
Sliding groove for rotatably locking in cooperation with the locking projection 69A
69 will be provided. In addition, FIG.
Formed on the back surface of the key top 41 existing on the right side of
Formed on the locking portion 43 and the holder plate 65
The locking portion 66 includes locking pins 63 and 64 and a locking pin, respectively.
Locking groove for locking pins 55 and 56 slidably in the horizontal direction
45 and the sliding groove 68 are provided. Subsequently, the key switch configured as described above is used.
The method of assembling the switch device will be described with reference to FIGS.
I do. First, a flexible circuit is placed on the switch support plate 72.
With the substrate 70 and the holder plate 65 placed thereon,
Each shaft 52 of the link member 47 is connected to each shaft hole 6 of the link member 48.
0 and the guide support member 46 is assembled. Thereafter, the link members 47 and 48 are rotated.
To the horizontal state shown in FIG.
Stop pins 55 and 56 and locking rod 61 of link member 48
Release of the sliding grooves 68, 69 in the locking portions 66, 67.
Holder play while guiding from each side by each guide wall 73
On each of the sliding grooves 68 and 69 on the
Let Then, when further sliding, the link member 48
The locking bar 61 is provided with a locking projection 69 formed in the sliding groove 69.
Get over A from the inclined surface 69B side. This state is shown in FIG.
It is shown. Thereby, the locking pin of the link member 47
55 and 56 are slidable by being inserted into the sliding groove 68
At the same time as the locking rod 61 of the link member 48.
Is rotatably engaged within the sliding groove 69 via the locking projection 69A.
The guide support member 46 is thereby stopped.
The connection with the holder plate 65 is completed. As described above, the locking bar 61 of the link member 48
And the sliding groove 69, and the locking pin of the link member 47.
The connection between the bearings 55 and 56 and the sliding groove 68
6 from the open side of each sliding groove 68, 69
Since it is done only by sliding on 5,
The connection between the guide support member 46 and the holder plate 65 is extremely high
Can be done easily. At this time, the guide support member
46 is guided by each guide wall 73 during sliding.
So that the guide support member 46 is
The guide wall 73 does not come off.
Thus, the connecting operation can be performed more easily.
You. Next, the link member held in the state shown in FIG.
The locking bar 53 of the key 47 and the locking groove 44 of the key top 41 are paired.
And the locking pins 63, 64 of the link member 48
After facing the locking groove 45 of the key top 41 (see FIG. 7).
), And lightly press the key top 41 downward. This
The locking bar 53 of the link member 47 is connected to the locking guide portion 44A.
It is snapped into the locking groove 44 while being guided further,
Sometimes, the locking pins 63 and 64 of the link member 48
While being guided by the inside 45A, the snap
Be plugged in. Such a state is shown in FIG. this
As a result, the connection between the guide support member 46 and the key top 41 is
finish. At this time, as described above, the locking portion 42 side
Based on the fact that the top and bottom widths of the key top 41 are increased,
The length of each resin piece 44B can be increased.
In addition, a notch 44C is formed above the locking groove 44.
The length of each resin piece 44C can be increased.
In addition to this, each resin piece is formed based on the cut portion 44C.
44 can have an increased resin elasticity. Therefore,
Locking the locking bar 53 of the one link member 47 with the key top 41
When pivotally locked in the locking groove 44 in the portion 42,
Simple utilizing the large resin elasticity of the resin piece 44C
In addition, the rotation can be reliably locked. As described above, the locking bar 53 of the link member 47
And linking with the locking groove 44 of the key top 41 and the link
The engagement between the locking pins 63 and 64 of the member 48 and the key top 41
The connection with the stop groove 45 is performed by the key top 4 from the state shown in FIG.
Because it is done only by pushing lightly down 1
Very easy connection between inner support member 46 and key top 41
What can be done. With the above operation, the key switch device
When the assembly is completed, the link members 47 and 48 and the holder
The connection work with the rate 65 and the key top 41
Can be performed very easily, and this
Simplifies assembly work and shortens assembly time
Also, regardless of the assembly ability of the worker,
The assembly of the switch device can be performed. Subsequently, the key assembled as described above
The operation of the switch device will be described. Key top 41
When the key is pressed downward, the key top 41 moves downward.
Accordingly, the locking rod 53 of the link member 47 is
When it is turned in the counterclockwise direction in FIG.
In addition, the locking pins 63 and 64 of the link member 48 are
3 in the horizontal direction (right direction in FIG. 1) in the locking groove 45.
Slide. At the same time, the locking rod 61 of the link member 48
Is a sliding groove 69 of the locking portion 67 in the holder plate 65.
Rotates clockwise in cooperation with the locking projection 69A
At the same time, the locking pins 55 and 56 of the link member 47 are locked.
Horizontally in the sliding groove 68 of the part 66 (rightward in FIG. 1)
Direction). When the key top 41 is pressed, the guide is supported.
The member 46 moves between the guide walls 73 in the left-right direction in FIG.
Regulations are made, so the key top 41 will unnecessarily fall
Is prevented. As a result, the link member 47 and the
The shaft support A that supports the link members 48 mutually moves downward.
And gradually depress the rubber spring 71
When the pressing amount exceeds a certain limit,
Ring 71 is buckled. This allows the rubber pudding
Movable electrode 71A in the flexible circuit board 70
The upper switch electrode 70A is short-circuited and a predetermined switching operation is performed.
The work is done. When the key top 41 is released from being pressed, both keys are released.
The shaft supports A of the link members 47 and 48 are rubber springs 71.
It is pushed upward by the elastic restoring force of. With this
And the locking bar 53 of the link member 47, the locking pins 55, 5
6, the locking bar 61 of the link member 48, the locking pin 6
3 and 64 perform the reverse operation to the above operation, and as a result,
The key top 41 is returned to the original position. Here, the locking rods 53 and 61 are horizontally
Are not moved, and the locking groove 44 and the sliding groove
Since the key top 41 only rotates within 69,
Without being moved in the horizontal direction,
It is moved up and down while maintaining a horizontal state. On the other hand, the maintenance of the key switch device
When performing key operation, key top 4
If you want to remove only 1
Pull the key top 41 further upward from the non-pressed state of 41
increase. At this time, the locking part 42 is opened at the lower part.
In addition to the groove 44 being formed, the holder plate
In the locking portion 66 of the key 65, the key top 41 is in a non-pressed state.
In contact with the locking pins 55 and 56 of the link member 47
The closing wall 68A that regulates the movement of the locking pins 55 and 56 is
And the locking portion 67
The locking bar 6 of the link member 48 when the
Locking projection 69 that abuts the first and restricts the movement of the locking rod 61
A wall portion 69C of A is provided. Therefore, the key switch
When the key top 41 is not pressed during maintenance of the
When the key top 41 is further pulled up from the lower state, it is closed.
The locking pin 5 is formed based on the regulating action of the wall 68A and the wall 69C.
The movement of the lock pins 5, 56 and the locking rod 61 is restricted.
5, 56 and the locking bar 61 are respectively provided with a locking portion 66 and a locking portion.
The engagement state is maintained without being detached from the portion 67.
You. On the other hand, the locking rod 53 is provided with the locking groove 4 of the locking portion 42.
4 easily disengaged from the open side of the locking pin 6
3 and 64 are also easily detached from the locking groove 45 of the locking portion 43.
You. Therefore, based on the restricting action of the closing wall 68A,
Locking pins 55 and 56 and locking portions 66, and
And a locking action based on the regulating action of the wall 69C of the locking projection 69A.
While maintaining the engagement state between the stop bar 61 and the locking portion 67, the locking
Engagement of the rod 53 with the locking groove 44 of the locking portion 42 and locking
The engagement between the pins 63 and 64 and the locking groove 45 of the locking portion 43 is released.
To easily remove only the key top 41
It works. As a result, the key switch
Easily remove only the lock 41 and remove the key switch device.
Maintenance can be performed easily. As described in detail above, the key according to this embodiment is
-With the switch device, when assembling the key switch device,
Locking pins 55 and 56 of link member 47 and link portion
The locking rod 61 of the member 48 is slid in the locking portions 66 and 67.
Guided by the respective guide walls 73 from the open sides of the grooves 68 and 69
While in the sliding grooves 68 and 69 on the holder plate 65
And slide the link member 48
The stop bar 61 is engaged with the locking projection 69A formed in the slide groove 69.
Slide until you get over the guide support
Since the connection between the material 46 and the holder plate 65 is performed,
Connection work between the guide support member 46 and the holder plate 65
It can be very simple. In particular, when the guide support member 46 slides,
The guide support member 46 is slid by the respective guide walls 73.
Since it is reliably guided toward the grooves 68 and 69, the guide support
The holding member 46 comes off from each of the sliding grooves 68 and 69.
Therefore, the connection work is performed by the guide wall 73.
Can be performed more easily. The guide support member 46 and the key top 41
When performing the connection with the locking rod 53 of the link member 47,
The key top 41 is opposed to the locking groove 44, and
Between the locking pins 63 and 64 of the locking member 48 and the key top 41.
After facing the stop groove 45, lightly lower the key top 41
The locking bar 53 of the link member 47
While being guided by the locking guide portion 44A, the sliding groove 44
Nap-in and at the same time, each locking pin of link member 48
63 and 64 are locked while being guided by the locking guide portion 45A.
The guide support member 46 is snapped into the groove 45.
That can be very easily connected to the key top 41
It is. In particular, the vertical width of the key top 41 on the locking portion 42 side
Is large, each resin piece 44B
The length of the locking groove 4 can be increased.
4 Since the cut portion 44C is formed in the upper part,
Coupled with the ability to increase the length of each resin piece 44C
The resin elasticity of each resin piece 44 is increased based on the cut portion 44C.
The first link member 47 can be locked
The rod 53 is engaged with the locking groove 4 in the locking portion 42 of the key top 41.
4, the resin piece 44C has a large
Easy and secure rotation locking by using elastic resin elasticity
Is what you can do. Further, by the simple assembling operation as described above,
In the assembled key switch device, the link member 47
The locking bar 53 of the locking portion 42 can move within the locking groove 44 of the locking portion 42.
And the link member 48
Locking rod 61 cooperates with locking projection 69A in sliding groove 69.
To be rotatable without moving, and
The movement of the inner support member 46 is restricted between the pair of guide walls 73.
This allows the key top 41 to operate its key
At times, it can be moved in any direction,
Is prevented. As a result, key operability is significantly improved.
Can be up. The locking part 42 has a locking part 42 whose lower part is opened.
In addition to the groove 44 being formed, the holder plate
In the locking portion 66 of the key 65, the key top 41 is in a non-pressed state.
In contact with the locking pins 55 and 56 of the link member 47
The closing wall 68A that regulates the movement of the locking pins 55 and 56 is
And the locking portion 67
The locking bar 6 of the link member 48 when the
Locking projection 69 that abuts the first and restricts the movement of the locking rod 61
Since the wall 69C of A is provided, the key switch
Key top 41 not pressed during maintenance of the switch device
When the key top 41 is further pulled up from the
8A and the restricting action of the wall 69C of the locking projection 69A.
The movement of the locking pins 55 and 56 and the locking bar 61 is regulated,
The locking pins 55, 56 and the locking rod 61 are respectively provided with locking portions 66.
And the engagement state is maintained without being disengaged from the locking portion 67.
Be held. On the other hand, the locking rod 53 is engaged with the locking portion 42.
It easily comes off from the open side of the stop groove 44, and the locking pins 63, 64
Also comes off the locking groove 45 of the locking portion 43. Therefore, based on the restricting action of the closing wall 68A,
Locking pins 55 and 56 and locking portions 66, and
And a locking action based on the regulating action of the wall 69C of the locking projection 69A.
While maintaining the engagement state between the stop bar 61 and the locking portion 67, the locking
Engagement of the rod 53 with the locking groove 44 of the locking portion 42 and locking
The engagement between the pins 63 and 64 and the locking groove 45 of the locking portion 43 is released.
To easily remove only the key top 41
It works. As a result, the key switch
Easily remove only the lock 41 and remove the key switch device.
Maintenance can be performed easily. Also, Hol
A rubber spring is inserted into the through hole 80 formed in the double plate 65.
And the lower side of the rubber spring 71
Peripheral portion 71B is stored and placed within the thickness of holder plate 65
The keystroke of key top 41
Thickness of the holder plate 65 while maintaining a large
To effectively reduce the overall height of the keyswitch device,
The thickness of the key switch device can be reduced. The present invention is not limited to the above embodiment.
Instead, various modifications will be made without departing from the gist of the present invention.
Good, of course, deformation is possible. For example,
In the embodiment, the locking projection 69A is provided in the sliding groove 69 of the locking portion 67.
Is formed, but such a locking projection is formed by a locking portion.
66 may be formed in the sliding groove 68. [0063] As described above, the key switch according to the present invention is
According to the latch device, the key top and the link member are assembled.
The handWith snap-in methodCan be easily done,
And when performing maintenance etc. of the key switch device,
While maintaining the engagement state of the holder member and the link member,
Only the key top can be easily removed from the link member
It is possible to maintain the key switch device.
It can be done easily. In addition, it is formed on the holder member.
A rubber spring is placed in the through hole,
To accommodate the lower peripheral edge of the
To maintain the keystroke amount of the key top
Key switch device by effectively utilizing the thickness of the holder member
Reduce the overall height and make the key switch device thinner
be able to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a key switch device. FIG. 2 is a plan view of one link member. FIG. 3 is a plan view of the other link member. FIG. 4 is a cross-sectional view of the key switch device. FIG. 5 is an explanatory diagram showing a state before a guide support member is connected to a holder plate. FIG. 6 is an explanatory view showing a state after the guide support member is connected to the holder plate. FIG. 7 is an explanatory view showing a state in which a key top is arranged on a guide support member connected to a holder plate. FIG. 8 is an explanatory diagram showing a state in which a key top is connected to a guide support member connected to a holder plate. FIG. 9 is a longitudinal sectional view of a conventional key switch device. FIG. 10 is a plan view of one link member used in a conventional key switch device. FIG. 11 is a plan view of the other link member used in the conventional key switch device. DESCRIPTION OF SYMBOLS 41 Key top 42 Lock part 43 Lock part 66 Lock part 67 Lock part 46 Guide support member 47 Link member 48 Link member 53 Lock bar 55, 56 Lock pin 61 Lock bar 63, 64 Locking pin 65 Holder plate 71 Rubber spring 44, 45 Locking groove 44A, 45A Locking guide 44B Resin piece 44C Cutout 68, 69 Sliding groove 68A Closing wall 69A Locking projection 69C Wall

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-342943 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01H 13/14

Claims (1)

(57) [Claim 1] A key top, a holder member disposed below the key top, and locking members at both ends, respectively, wherein a lower surface of the key top and thereby coupling engagement with the holder member, the keytop is guided and supported in the vertical direction, pivotally connected of each other
A key switch device comprising a first link member and a second link member, and performing a switching operation in accordance with the vertical movement of the key top, wherein an inverted cup-shaped rubber spring for urging the key top upward. And a through-hole formed in the holder member to receive and arrange the lower peripheral edge of the rubber spring within the thickness of the holder member; and a through-hole provided in the holder member, the lower side of the first link member. A lower sliding locking portion having a restricting portion for restricting movement of the locking member, and a lower side of the second link member provided on the holder member.
A lower rotation locking portion for rotatably locking the locking member, and a lower rotation locking portion provided on the key top, for locking the upper locking member of the first link member rotatably , To go down
An upper pivot locking portion having a first engaging guide portion is opened so as to extend Therefore, provided in the key top, the upper side of the second link member
Lock the locking member so that it can slide, and
An upper portion having a second locking guide portion having a slope that expands
A sliding locking portion , wherein the upper locking member of the first link member serves as a first locking guide portion.
Snap-in to the upper pivot locking part of the key top through
And the upper locking member of the second link member is the second locking member.
Snap on the upper sliding lock of the keytop via the locking guide.
When the key top is pulled up further from the non-pressed state of the key top, the lower locking member of the first link member and the lower sliding member The top of the key top is rotated while the engagement with the locking part is maintained.
Engagement of the upper locking member of the locking portion and the first link member is released Rutotomoni, the first link member and the second link member and the times
The second link member is based on being movably connected.
The engagement state between the lower locking member and the lower rotation locking portion is maintained.
The upper sliding locking portion of the key top and the second link member
The key switch device wherein the engagement with the upper locking member is released .