JP2576767Y2 - Vehicle key device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key device for a vehicle , and more particularly, to a key device for inserting a key into a key device body .
A leaf spring contact is used to resiliently contact the terminal provided on the key side to achieve electrical conduction with the body.
Related to a key device .

[0002]

2. Description of the Related Art For example, as a means for transmitting and receiving an electric signal between two objects configured to be capable of engaging and disengaging from each other, a leaf spring contact provided on one side is connected to a fixed terminal provided on the other side. There is known a structure in which the spring comes in abutting contact. One end of this type of leaf spring contact is fixed to the circuit board by soldering or the like, and an appropriate contact pressure due to the elasticity of the material itself acts on the free end that constitutes the contact portion that contacts the fixed terminal of the other side. It is supposed to.

[0003]

In the above-mentioned conventional contact structure, it is necessary to generate a predetermined contact pressure in order to prevent the occurrence of poor contact between the contact portion and the fixed terminal.
From the viewpoint of enhancing the durability, it is preferable that the stress acting when the leaf spring contact bends can be minimized. To suppress the stress was sufficient displacement amount of the contact portion, because it is effective to increase the length of the leaf spring, which inhibits miniaturization of the contacts, Igunisshi automobile
There is a disadvantage that it is difficult to apply the present invention to a key device used for an operation switch .

The present invention has been devised to solve such disadvantages of the prior art, and its main purpose is to provide an improved plate capable of reducing stress without increasing dimensions. An object of the present invention is to provide a vehicle key device having a spring contact.

[0005]

According to the present invention, such an object is achieved by fixing one end to a substrate and setting its free end to a key side.
Leaf spring contact in a vehicle key device having a leaf spring contact adapted to be able to resiliently contact a provided terminal
A point is connected to a first end substantially fixed to the substrate.
And a second resilient piece extending from the free end side of the first resilient piece in a direction in which the first resilient piece is folded back and provided with a contact portion at the free end thereof. The contact is located on the key side.
This is achieved by the first and second resilient pieces being configured to bend simultaneously when they come into contact with the slashed terminals.

[0006]

According to such a configuration, the leaf spring contact is folded back.
Since those of two bullets Hatsuhen portion that is, a leaf spring
Substantially increase the leaf spring without increasing the space required for contact installation
Effective length can be increased .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described in detail below based on specific embodiments shown in the accompanying drawings.

FIG. 1 and FIG. 2 show a schematic structure of a key device to which the present invention is applied. The key device 1 is mounted on a steering column around a steering shaft of an automobile, and includes a rotary switch unit 2.
, A steering lock device unit 3 and a cylinder lock unit 4, and have a function of turning on / off the vehicle power supply, starting a starter motor, and a steering lock function. In the key device 1, the rotor 5 of the cylinder lock portion 4 and the rotary switch portion 2 are connected by a joint shaft 6, and an eccentric shaft provided at an intermediate portion of the joint shaft 6 is connected to a lock pin 7. When the key 8 is inserted into the rotor 5 of the cylinder lock portion 4 and rotated, the contact of the rotary switch portion 2 is intermittently connected, and the position between the engagement position with the steering shaft and the disengagement position is set. The lock pin 7 can be moved between them.

In the vicinity of the opening of the key insertion hole of the rotor 5 at the front end of the main casing 9 of the key device 1, a printed circuit board 10 and a synthetic resin case 11 for supporting the printed circuit board 10 are provided. The electrical unit 12 is attached. On the printed circuit board 10, a pair of power supply terminals 13 formed of leaf spring contacts, a limit switch 14 for detecting insertion of a key, and a light emitting diode 15 for illuminating a position mark are mounted.

The key 8 used in the key device 1
In order to remotely control and unlock the door lock device provided on the vehicle side, for example, a transmission circuit for transmitting a code signal of infrared light is built in its grip portion, and this transmission circuit is A pair of power supply terminals 1 are connected to charging terminals 16 provided on both sides of a base of the key 8 with respect to a power supply battery for operation.
When the battery 3 is brought into contact with the vehicle, the battery is charged from the vehicle-mounted battery.

The power supply terminal 13 is formed in a long and thin plate spring shape from a material having high elasticity and flexibility such as phosphor bronze material, and as shown in FIG. The end is connected to the printed circuit board 10 and is provided so as to cross both sides of the key insertion portion of the case 11. A guide collar 17 made of an insulating material is mounted between these two terminals 13 so as to expose only the charging terminal 16 at the base of the inserted key 8.
The key 8 is turned clockwise as shown in FIG.
The power supply terminal 13 and the charging terminal 16 can come into contact with each other only when they are set to the position.

On the front surface of the printed circuit board 10, a light guide ring 18 made of translucent resin and a metal cover cap 19 are provided.
Are attached with a guide plate 20 for guiding the key 8 to a key hole of the rotor 5 of the cylinder lock portion 4 interposed therebetween. These are arranged along the case 11 along the insertion direction of the key 8.
The sub-assembly is formed so that the pair of projections 21 protruding from the cover cap 19 are resiliently engaged with the corresponding holes 22 provided in the cover cap 19 so as not to fall off each other.

The light guide ring 18 is sandwiched between the inner surface of the cover cap 19 and the electrical unit 12 as described above, and includes a plurality of resilient pieces 23 extending radially outward. It is protruding. Since the resilient piece 23 abuts on the inner surface of the cover cap 19 with resilient force, the rattling of the light guide ring 18 is prevented.

A projection 24 is formed on the light guide ring 18 at a position corresponding to each position (LOCK, ACC, ON, START) of the key. On the other hand, the cover cap 19 has a cutout window 25 into which the projection 24 is fitted. A position ring 27 in which a position mark 26 is white and fluorescently printed on a portion corresponding to the cutout window 25 is attached at a position surrounding the key insertion hole 28.

Thus, when the light emitting diode 15 is energized, the notch window 25 is entirely illuminated through the light guide ring 18, and this is transparent through the white-printed position marks 27. Mark 2
The letter 7 shines. At the same time, the inner peripheral surface 29 of the hole of the light guide ring 18 corresponding to the key insertion hole 28 also shines, improving the visibility of the key insertion hole 28 at night.

A connector 31 for connecting a power supply line of a light emitting diode, a signal line of limit switches, and a supply line of a charging current to a built-in battery of a key to a control circuit on the vehicle side is provided on a side portion of the case 11. It is formed integrally.

Now, the above-described printed circuit board 10
As shown in FIGS. 4 and 5, the power supply terminal 13 is fitted to a sleeve 40 protruding from the front surface of the case 11 toward the insertion opening of the key 8, and extends through the sleeve 40. ing. Feeding terminal 13 is formed by placing a staggered cuts 41a · 41b in an elongated leaf spring member, generally a first portion 13a extending in the tangential direction of the outer peripheral surface of the sleeve 40 (the substrate of claim for
A substantially fixed end) and a second portion 13b ( parallel to the diameter line of the sleeve 40 ) .
(Corresponds to the second elastic piece) and the cuts 41a and 41b
Thus, the formed intermediate portion 42 (the first portion according to the claims)
(Corresponding to the bounce piece) . And the first part 1
An appropriate angle is provided between the 3a and the second portion 13b in the extending direction by bending the intermediate portion 42 . In addition, the first portion 13a, soldered terminal portion 43 with respect to the pre-<br/> cement circuit board 10 at one end, its
Of the intermediate portion projecting portions 44, respectively provided to one end of the second portion 13b, the contact portion 45 is provided for the charging terminal 16 of the key 8.

On the other hand, a groove 46 with which the other end of the first portion 13a of the power supply terminal 13 can be engaged is formed on the outer peripheral surface of the sleeve 40.
A projection 47 with which the front edge of the first portion 13a can be engaged is formed, and a slit 48 into which the projection 44 at the middle of the first portion 13a can protrude is formed at the base of the sleeve 40 in the case 11. Printed circuit board 10
When the soldering terminal portion 43 at one end of the first portion 13a is soldered to the circuit pattern after the first portion 13a is attached to the case 11, the first portion 13a of the power supply terminal 13
The projection 47 and the slit 48 support it. As a result, the first portion 13a of the power supply terminal 13 is supported at the two points of the groove 46 and the slit 48, so that the second portion 13b is
It has a qualitatively fixed shape. Therefore, the bending stress applied when the contact portion 45 at the free end of the second portion 13b is bent by contacting the charging terminal 16 of the key 8 does not reach the soldering terminal portion 43 soldered to the circuit pattern. It has become.

[0019]

As described above, according to the present invention, the bending stress acting on the entire leaf spring contact is extended from the fixed portion to the printed circuit board even if the displacement amount and the contact pressure of the contact portion are increased. The first part is divided into a first part and a second part extended at an appropriate angle with respect to the extending direction of the first part after the intermediate part formed by the cut is curved. Therefore,
Increase the effective length of the leaf spring without increasing the size of the leaf spring contact
It does not lead to an increase in the size of the vehicle key device.
It is very effective in terms of acquiring a stable contact pressure of the maintenance performance over a prolonged Ku leaf spring contact.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a key device to which the present invention is applied.

FIG. 2 is an exploded perspective view of the key device.

FIG. 3 is a partial view showing a relationship between a key and a power supply terminal;
(A) shows the LOCK position, and (B) shows the ON position.

FIG. 4 is an enlarged exploded perspective view of a portion according to the present invention.

FIG. 5 is an enlarged perspective view of a portion according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Key device 2 Rotary switch part 3 Steering lock device part 4 Cylinder lock part 5 Rotor 6 Joint shaft 7 Lock pin 8 Key 9 Main body casing 10 Printed circuit board 11 Case 12 Electrical unit 13 Power supply terminal 13a First part 13b Second part 14 Limit switch 15 Light emitting diode 16 Charging terminal 17 Guide collar 18 Light guide ring 19 Cover cap 20 Guide plate 21 Projection 22 Corresponding hole 23 Resilient piece 24 Projection 25 Notch window 26 Position mark 27 Position ring 28 Key insertion hole 29 Inner peripheral surface 31 Connector 40 Sleeve 41a / 41b Cut 42 Intermediate part 43 Soldering terminal part 44 Projection part 45 Contact part 46 Groove 47 Projection 48 Slit

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Hei 6-43979 (JP, U) Japanese Utility Model 27-4845 (JP, Y1) (58) Field surveyed (Int. Cl. ⁶ , DB name) H01H 1/26 H01H 27/06

Claims (1)

(57) [Scope of request for utility model registration] An end is fixed to a substrate, and its free end is on a key side.
A key device for a vehicle having a leaf spring contact configured to be able to resiliently contact a terminal provided on the board , wherein the leaf spring contact has a first end substantially fixed to a substrate. A first resilient piece, a second resilient piece extending from the free end side of the first resilient piece in a direction in which the first resilient piece is folded back and provided with a contact portion at the free end thereof; vehicle key device, wherein the contact portion in which the first and second elastic piece portion is configured to flex at the same time in contact with the terminals provided on the key side.