JPS58189924A - Key telescope detector in key switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a key insertion/removal detection device in a car key switch or the like.

For example, insert the key into the key switch and get off at 911,
To prevent mistakes such as locking the door inadvertently, it would be good to have a system that issues an alarm with a flash report when the key is inserted into the key switch and the door is suddenly opened. Therefore, it is necessary to install a switch to detect the insertion and removal of the key in the KFi key switch and configure an alarm circuit in combination with the door switch. A
ViKey press detection device 11 that can be used for such purposes
：841.

Conventionally, this type of key insertion/removal detection device has a sliding mechanism in which a key is inserted into a cylinder to be rotated, and when the key is inserted, the outer end is pushed out to the point where the outer end becomes the outer peripheral surface of the cylinder. It is generally known that a fixed member on the outer circumference of the cylinder is provided with a slider that is pressed by the sliding plate and turns on the key detection switch (for example, see Japanese Patent Publication No. 46-33614). ). In this structure, when the cylinder is rotated by operating the key, the slider moves from the sliding plate to the outer peripheral surface of the cylinder and slides on the outer peripheral surface of the cylinder, so when the key is inserted, K1ff
It is necessary that the outer end of one plate be at the same height as the outer peripheral surface of the cylinder. If the PJwJ plate does not reach all four outer surfaces due to a manufacturing error, the slider will not be completely pushed out of the housing recess of the main cable plate provided in the cylinder and may get caught when the cylinder is rotated. If the moving plate protrudes from the outer circumferential surface, the sliding plate will get caught on the inner circumferential part of the am material on the outer circumference of the cylinder or on the slider, and the cylinder will not rotate smoothly. In order to prevent steps from occurring, the dimensions of the parts must be highly accurate, and the thrust must be high. The present invention focuses on such problems and aims to provide a key insertion/ejection device that does not require high precision parts. Aya, something got pushed into the 9 key! !
A stone-turning plate having a key insertion/removal detection piece that is pressed by touching the key, and an arcuate piece that is pushed up via the key insertion/ejection detection piece to a position where the KM edge excludes an arc centered on the cylinder when the key is inserted. is attached to the cylinder in a rotational direction i=J, and the tip of the m actuator, which controls opening and closing of the key detection switch, is brought into sliding contact with the periphery of the circular arc piece of the rotary plate. In other words, the present invention uses the slider on the arc piece of the rotating plate! ! ! Since the Jl mover Fi always slides on the arc piece when the cylinder is rotated, there is no need to increase the precision of the Kff product as in the conventional example mentioned above, and the cylinder rotates smoothly without getting caught. Furthermore, according to the present invention, the movement of the key insertion/removal detection piece is expanded by changing the center of rotation of the rotary plate, and the amount of extrusion of the arcuate piece is increased.
It is now possible to open and close the switch reliably, and the position of the key detection switch can be selected quite freely relative to the key insertion/removal position, and restrictions on the shape of the key switch are relaxed, making the design easier. This also has the advantage of increasing the degree of freedom.

An embodiment in which the present invention is applied to an automobile key switch having a steering lock mechanism will be described below with reference to FIG. 3.

FIG. 1 is a partial cross-sectional side view of the key switch, showing the state in which no key is inserted, and FIG. 2 in the state in which the key is pushed in. In the figure, the +11Fi rear end has a low 1 squirrel inch part (body with scratches, (3) Fi body 11) lX711sJC interior, 9 cylinders, cylinder flK is provided with a plurality of lock plates (4), It constitutes a cylinder lock with a well-known structure.

(6) This is a cam that is integrally formed with the rear of the Fi cylinder and sK, and rotates the rotary switch installed in the rotary switch 5 (2) as the cylinder (3) rotates. (8) is a lock link that is pivotally attached to the body fs by the bottle (7) K, and is biased with rotational force by the spring (8). Plate +11 K is in sliding contact. (to) is biased by a spring (not shown) K toward the rear in the figure, and the cam (rotation Kt of 11) moves in the direction perpendicular to the plane of the figure!! It is a locking member, and in the locked position, the back part is connected to the opening hole (not shown) formed in the body (1).
It protrudes to put the steering shaft (m not shown) in the locked state, and in the unlocked position, it moves toward the front in the figure and the back part enters into the body (1) to put the steering shaft in the unlocked state. . The rear end (6b) of the lock link ill is separated from the locking member when the key is not inserted, and when the key 01) is inserted, it is pushed up by the rotating plate (key 01) and the lock link (1) is pushed up. is surrounded by 1, and the # end (6b) comes into contact with the top surface (log) of the locking member -, and the key (11+
When the locking member is moved to the unlock position by rotating the locking member, the upper surface of the locking member (Lo
t) so as to engage with the groove (10b) formed in the groove (10b). This action causes the lock link (6) to lock the key (
When the key (11) is inserted or removed, the locking member is held in the unlocked position and the steering shaft is unlocked, and the key (11) is removed. Sometimes, the locking member is moved to the lock position to lock the steering shaft. The ring is the cap.

- is a nine-key detection switch provided on the outer periphery of the body (1), and constitutes a normally open switch with an identification contact, attai, and a movable contact stopper η. The branch is a slider for opening/closing the switch I#IJlia provided at the position corresponding to the rotation contact 0η, and the body is provided with a mounting hole (L) that can freely vibrate in the diametrical direction of the cylinder (1). The head 1iL (18m) is in contact with the spring piece (17m) of the air Qη, and the tip 111!i (IJIb) FishiIJ
N1 (1111C Set'rT Rare* times & board XKtl!
are in contact with each other. The movable contact 7) is not in contact with the fixed contact when the key (lυ) is not inserted, but when the key is pushed in, the rotary plate is pushed up by the key (Ill) and slides as shown in Figure 2. The mover presses the spring piece (17), causing the movable contact 07) to come into contact with the fixed contact INK, turning on the key detection switch a and detecting that the key C11) has been inserted.

Next, the structure and operation of the rotating plate will be described with reference to Fig. KII1 and Fig. 4. Fig. 113 shows a state in which the key (11) is not inserted, and Fig. 4 shows a good state with the key aυ inserted. The rotary plate consists of a key insertion/removal detection piece □□□ that protrudes from the middle of the circular arc piece and the inner KIN, and the fulcrum (IK therefore cylinder (3) K rotation Cylinder (1) K can be installed and the rotary plate is stored!!
is- is formed. The key insertion/removal detection piece is inserted into the key insertion part of the cylinder (8), and when the key leaf is pressed, the key structure formed on the side of the key leaf is detected as shown in Figure 1. Pushed by Establishment S (Foundation) K, 1 turn&#@
The cylinder (1) moves counterclockwise around the fulcrum, and the arc half protrudes beyond the outside 111ifi of the cylinder (1). Arc piece 5
uitIn this state, the periphery (21m) is connected to the cylinder (8
) It has a shape that exactly coincides with the circular arc centered at t, and its protrusion height is set to a height that does not touch the inner circumferential surface of the body (1). In addition, when the key 0 is operated, the rotary plate CA#''i rotates together with the cylinder (1), but the position of the arc piece 0 is adjusted so that the slider does not slip from the periphery (21) over its entire range. and select the length.

This embodiment has 11 designs as described above, and the key at>
When inserted, the slider (+barrel) is pushed up by the arc piece 11)K, and when the key (11) is rotated, the slider -〇 tip (18b) ri moves over the phantom periphery (Ha) of the arc piece C2. The height of the periphery (21 m) is constant, and the cylinder (1) rotates smoothly because it has a circular arc shape with no irregularities, and the key detection switch 011 detects the key ( 11), F'i is always kept in the ON state during the pushing process.In this way, the slider I slides on the arcuate piece, so the slider slides on the sliding plate provided inside the cylinder. Unlike the conventional example, where the cylinder slides along both the direction and the cylinder outer circumferential surface, there is no difference in level on the m# surface due to an error in the dimensions of the parts.

In addition, since the movement of the key insertion/removal detection piece is transmitted in a magnified manner to the circular segment due to the position of the support j: Lr The amount of extrusion can be increased, making the opening and closing of the key detection switch more AI.
In the conventional example, it is necessary to arrange the slider to match the insertion/removal position of the key.
As shown in Fig. 3, in this embodiment, the key insertion/removal position is X-X.
A Y-YK slider 011 is provided at 9 positions with a 4i degree deviation from K. In this way, by appropriately designing the shape of the rotary plate, the position of the slider, that is, the key detection switch. Since it is possible to freely select the key switch, restrictions on the shape and direction of the key switch as a whole are greatly relaxed.

Note that the key detection switch 05) in the above embodiment is shown to be turned on when the key is inserted, but it is also possible to provide a switch that turns off when the key is inserted, or a normally closed contact and a normally closed FII switch.
It is also possible to provide one with both IA contacts, and you can select the appropriate one depending on how the switch is used. The structure is similar, so the explanation will be omitted.

As is clear from the above-described embodiments, the present invention provides a cylinder with a rotating mechanism having a key insertion/removal detection piece and an arcuate piece that is pushed up via the key insertion/removal detection piece when a key is pressed. The opening/closing of the key detection switch is controlled by a slider that is in sliding contact with the key detection switch, which eliminates the need for high component precision and enables smooth key rotation. Moreover, there is an advantage that the degree of freedom regarding the shape of the key switch can be improved.

[Brief explanation of the drawing]

1 and 2 are partially cutaway views of a button according to an embodiment of the present invention, and FIGS. 3 and 4 are sectional views of essential parts of the same. ill Vi body (-leg side member), (3) is the cylinder, (11) is the key, the reference is the key detection switch, Q81 is the slider, - is the rotary plate, ke υ is the national arc piece, (21m) is the periphery, and the ridge is the key% dedetected piece. Patent Applicant: Yushin Seiki Kogyo Co., Ltd. Agent: Patent Attorney Shino 1) Actual Figure 1 Figure 2

Claims (1)

[Claims] (1) A key insertion/removal detection piece that is pushed in contact with the inserted key, and an arcuate piece that is pushed up via the key insertion/removal detection piece to a position where the periphery draws a nine-circular arc around the cylinder when the key is inserted. The rotary plate with the cylinder K [I movable K
JlX attached, the tip touches the circumferential edge KflJ of the circular arc piece of the rotary plate, and when the key O is inserted or removed, it moves in the diameter direction of the cylinder as the rotary plate rotates, and slides to control the opening and closing of the key detection switch. 41) A key insertion/removal detection device in a key switch.