JPH0813875A - Electronic-part embedded key and key plate thereof - Google Patents

Abstract

PURPOSE:To incorporate an electronic part into the gripping section of a key so as not to be slipped off even at the time of usage for a prolonged term. CONSTITUTION:The base section 11a of a key plate 11 is formed in an approximately U shape having a recessed section 13 on the base end side of the base section 11a. A holder 12 is fitted into the recessed section 13 through a guide groove 12a in the key plate 11, and the holder 12 is brought to the state, in which the holder 12 is engaged with the key plate 11 by the engagement of projections 16 and engaging grooves 14. A transponder 5 transmitting a specific ID code when it is brought into contact with magnetism is inserted into a receiving section 15 formed to the holder 12, and the transponder 5 and the holder 12 are molded of polyvinyl chloride (PVC) together with the base section 11a. The transponder 5 and the base section 11a are separated at a fixed distance by interposing the holder 12 between them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component-embedded key in which an electronic component such as a transmitter is built in a grip portion of a key and a key plate for the key.

[0002]

2. Description of the Related Art The engine of a vehicle is started by inserting an ignition key into a key cylinder and rotating the key. In such a configuration in which the engine is started by a mechanical rotation operation using the ignition key, the engine is started by using a duplicate key, a wire, or the like, so that the vehicle is easily stolen.

Therefore, in order to prevent such theft, there is a key which controls the start of the engine by an electric signal emitted from an ignition key as well as a mechanical key operation. An example of such a key is a remote key. The remote key has a built-in transmitter for transmitting a unique ID code, and when the operation button is pressed, the ID code is transmitted from the ignition key. Then, the ID code is received by the receiver, and when the received ID code matches the ID code previously set in the engine start control computer (ECU or the like), the engine is started by electronic control. . Therefore, the key cannot be started by anyone other than the owner of the vehicle, and the vehicle is designed to be prevented from being stolen.

A small transmitter for transmitting an ID code and a battery are built in the remote key, and usually they are built in the grip portion of the key. Conventionally, the grip portion is configured so that it can be fixed to the base portion of the key plate in a state where two corresponding resin cases are overlapped with each other, and when the transmitter and the battery are housed in the resin case, the grip plate is usually screwed. It is fixed to the base. According to such an electronic component assembling structure, when the battery runs out, the battery can be replaced by removing the screw or the like and opening the inside of the resin case.

By the way, in recent years, a battery-less oscillator (hereinafter referred to as a transponder) which obtains electric power by converting the magnetic energy into electric energy when touched by magnetism is known, and this transponder is built in as an ID code transmitter. Ignition key to do is desired.

[0006]

However, in the structure in which the resin case is fixed with the screw, the screw is loosened and the resin case is opened after long use, and the built-in parts such as the transmitter and the battery are There was a risk that it would fall off the resin case and fall. In such a case, since the ID code is not transmitted, the engine cannot be started regardless of the owner's key.

Further, in the case of the assembly structure in which the resin case is fixed by the screw or the like, the screw fastening work is troublesome and the key manufacturing process is troublesome. Further, in order to firmly screw the screw into the resin case, the resin case is required to have a certain degree of hardness, and a material having a slight rubber elasticity which is comfortable to the touch cannot be used as the grip portion. Furthermore, if the key is dropped into water and water enters through a slight gap between the joints of the resin case, the built-in electronic components may be adversely affected. Therefore, there is a problem in applying the conventionally known structure for assembling electronic components to the grip portion of the ignition key to the assembling of the transponder as it is.

The present invention has been made in order to solve the above-mentioned problems, and its purpose is to set an electronic component built in a grip portion of a key so that it will not come off from the grip portion even if it is used for many years. An object of the present invention is to provide an electronic component embedded key that can be attached and its key plate.

[0009]

In order to solve the above-mentioned problems, in the invention described in claim 1, a concave portion for accommodating an electronic component is formed in the base portion molded by the resin by molding the grip portion.

According to a second aspect of the present invention, a housing portion is formed at a position corresponding to the recess of the base portion of the key plate according to the first embodiment, and an opening for communicating the housing portion with the outside is provided. Mold the resin to form the grip,
The opening was closed by fitting the closing member in a state where the electronic component inserted from the opening was stored in the storage portion.

According to the third aspect of the present invention, the grip portion is formed by molding the base with resin together with the electronic component in a state where the electronic component is placed in the recess of the base of the key plate.

According to a fourth aspect of the present invention, the electronic component is a transmitter, and the accommodating portion is formed such that the transmitter accommodated in the accommodating portion can be arranged at a predetermined distance from the key plate. did.

According to a fifth aspect of the present invention, the electronic component is a transmitter, and the transmitter is placed in a concave portion of the base portion of the key plate with a predetermined distance from the key plate via a spacing member. I placed it.

[0014]

Therefore, according to the first aspect of the present invention, if the base is molded with the resin while the electronic component is arranged in the recess, the electronic component is molded with the base sandwiched from both sides thereof. Therefore, even if a twisting stress is applied to the grip portion due to the rotation operation when the key is used, the stress is received by the base portions extending to both sides of the electronic component, and it is possible to prevent the electronic component from being loaded. Even if the electronic parts are molded together with the base part with resin to form the grip parts, the electronic parts inside the grip parts are arranged in the recesses of the base part, so that the size of the grip parts is not increased and the size can be made compact. It is possible.

According to the second aspect of the present invention, since the base portion of the key plate is molded with resin, the accommodating portion that communicates with the outside through the opening at the position corresponding to the concave portion of the base portion in the resin. Is formed. The electronic component is inserted through the opening and accommodated in the accommodation portion, and in that state, the opening is closed by the insertion of the closing member. Since the closing member is fitted in the opening, it cannot be removed even if it receives a slight shock or vibration. Further, even if a twisting stress is applied to the grip portion when the key is rotated, the electronic parts are protected because the base parts extending to both sides of the electronic part housed in the recess of the base part receive the stress. Further, even if the electronic component is embedded, the grip portion is formed compactly.

According to the third aspect of the invention, the grip portion is formed by integrally molding the electronic component together with the base in a state where the electronic component is arranged in the recess of the base. Therefore, it is unlikely that the electronic component molded with the resin will come off the grip portion. Further, even if a twisting stress is applied to the grip portion by a rotating operation when the key is used, the stress is applied to the base portions extending on both sides of the electronic component, and therefore the electronic component is not loaded. The grip portion is formed compact even if an electronic component is embedded.

According to the fourth aspect of the present invention, the transmitter housed in the housing portion is arranged at a predetermined distance from the key plate. Therefore, the radio wave transmitted from the transmitter is not interfered by the key plate made of metal, and is reliably transmitted.

According to the fifth aspect of the present invention, the transmitter is molded with the resin together with the base in a state in which the transmitter is separated from the key plate by a predetermined distance by means of the distance holding member. Therefore, the radio wave transmitted from the transmitter is transmitted from a position separated by a predetermined distance from the key plate made of metal, and is not disturbed by the key plate made of metal.

[0019]

【Example】

(First Embodiment) A first embodiment in which the present invention is embodied in an ignition key will be described below with reference to FIGS. The grip portion of the ignition key in this embodiment has a transponder, which is a kind of transmitter, as an electronic component. When the transponder touches a magnetic field, the transponder converts the magnetic energy into electric energy, which is used as electric power to transmit a preset ID code. That is, it is a transmitter that does not require a battery.

As shown in FIG. 3, the ignition key 1
Is a key master 2, a transponder 5 accommodated in an accommodating portion 4 formed in the grip portion 3, and an opening 4 of the accommodating portion 4.
It is composed of a stopper 6 for closing a in a state in which the transponder 5 is accommodated.

As shown in FIG. 1, the key master 2 is formed by molding a protector 8 made of polyvinyl chloride (PVC) on the base portion 7a of the key plate 7 in which the grip portion 3 is molded. The base portion 7a of the key plate 7 is formed in a substantially U shape having a recess 9 on the base end side. The accommodating portion 4 is formed at a position corresponding to the concave portion 9, and the accommodating portion 4 is in a state of being sandwiched between the base portions 7a extending on both sides thereof in a substantially U shape.

As shown in FIGS. 1 and 2, in the vicinity of the opening 4a in the accommodating portion 4, projections 4b are formed on the surfaces of the key plate 7 which face each other in the thickness direction (vertical direction in FIG. 2). . The stopper 6 has a locking groove 6a formed at a position corresponding to each projection 4b. The stopper 6 once fitted into the housing portion 4 through the opening 4a is formed by the engagement between the projection 4b and the locking groove 6a. It is locked so as not to come off from the protector 8.

Inside the transponder 5, an antenna coil, a transformer, a capacitor, an IC and the like (all not shown) are built. The transponder 5 receives a magnetism from a magnetism generator (not shown) built in the key cylinder side and stores the current generated in the antenna coil in a capacitor via a transformer, and the stored voltage becomes a predetermined value or more. When it reaches, a specific ID code preset in the IC is transmitted. The engine is started only when the ID code received by the receiver built in the key cylinder side from the transponder 5 matches the ID code preset in the engine control computer (ECU or the like). . The electronic control system that prevents the computer from starting the engine is a system that cuts off ignition of the ignition coil when the ID codes do not match, E
There are a method of cutting fuel injection by FI (fuel injection control device), a method of blocking the operation of the starter, and the like. The magnetism generator is operated with the ignition key inserted in the key cylinder.

The antenna coil is arranged in the transponder 5 along its longitudinal direction, and in order for the antenna coil to efficiently receive magnetism, the transponder 5 has its longitudinal direction parallel to the longitudinal direction of the key plate 7. Need to be arranged. Further, in order to transmit the radio wave from the transponder 5 to the receiver without being disturbed by the metal base 7a, the transponder 5 needs to be separated from the base 7a by a predetermined distance (about several mm). Therefore, when the transponder 5 is accommodated, the accommodating portion 4 has its longitudinal direction parallel to the longitudinal direction of the key plate 7, and a predetermined space (about several mm) is secured between the transponder 5 and the base portion 7a. Is formed. The protector 8 is formed with two through holes 8a through which the key ring is inserted, and concave portions 8b are formed on both side surfaces of the protector 8 so that it can be easily gripped by fingers.

Next, the operation of the ignition key 1 configured as described above will be described. Base 7a of key plate 7
The key master 2 is formed in advance by molding a protector 8 made of polyvinyl chloride (PVC) by thermoforming. At this time, since the accommodating portion 4 for accommodating the transponder 5 is formed at a position corresponding to the concave portion of the base portion 7a having a substantially U shape, even if the accommodating portion 4 for the transponder 5 is formed in the grip portion 5, the grip portion 5 is grasped. The part 3 is formed compactly. The transponder 5 is assembled to the key master 2.

The transponder 5 is assembled by inserting the transponder 5 into the accommodating portion 4 through the opening 4a formed in the grip portion 3 of the key master 2 and inserting the stopper 6 into the opening 4a to close the opening 4a. Be seen. The stopper 6 once fitted is firmly locked to the protector 8 by the engagement between the locking groove 6a and the protrusion 4b and cannot be easily removed. Since the transponder 5 built in the ignition key 1 of the present embodiment does not require a battery and does not require battery replacement, there is no problem even if the housing portion 4 cannot be opened while being closed by the stopper 6.

The transponder 5 accommodated in the accommodating portion 4 in this manner is arranged substantially at the center of the recess 9 of the base portion 7a having a substantially U shape. That is, the transponder 5 is arranged such that its longitudinal direction is parallel to the longitudinal direction of the key plate 7 and a predetermined space (several mm) is separated from the key plate 7 via a mold resin (PVC).

When the engine is started by using the ignition key 1, first, the ignition key 1 is inserted into the key cylinder, and then the rotation operation is performed. When the ignition key 1 is rotated, a stress in the twisting direction is applied to the grip portion 3, but inside the grip portion 3, a substantially U-shaped base portion 7 is provided.
Since a extends along both side edges, the grip portion 3 does not bend even if such a torsion stress is applied. Further, no load is applied to the transponder 5 which is arranged with its both sides sandwiched by the base portion 7a extending in a substantially U shape. Therefore, even if the ignition key 1 is used for many years and the rotating operation is repeated, the transponder 5 is not damaged by the stress caused by the rotating operation.

When the ignition key 1 is inserted into the key cylinder, magnetism is generated from the magnetism generator on the key cylinder side. When the transponder 5 receives the magnetism,
A current is generated in the antenna coil in the transponder 5 and the capacitor is charged via the transformer. When the voltage stored in the capacitor reaches a predetermined value, the IC
A specific ID code set in advance is transmitted. At this time, since the antenna coil is arranged so as to extend along the insertion direction of the ignition key 1 so as to be easily magnetized, the electric power for transmitting the ID code can be efficiently obtained. Further, since the transponder 5 and the metal base portion 7a are separated by a predetermined distance (about several mm), the transmitted electric wave is not interfered by the metal key plate 7 and the ID code is surely placed on the key cylinder side. Is received by the receiver.

The ID code received by the receiver is compared with the ID code preset by the engine start control computer (ECU etc.), and only when they match, the engine is started based on the rotation operation of the ignition key 1. To be done. When the ID codes do not match, the computer does not start the engine because the ignition coil ignition operation, EFI fuel injection operation, or starter operation operation is cut by the computer according to the control method.

As described in detail above, according to the ignition key 1 of this embodiment, the base portion 7a of the key plate 7 accommodates the transponder 5 in the accommodating portion 4 in the resin molded by molding the grip portion 3, The opening 4a is closed by fitting a stopper 6 that is prevented from coming off by the engagement between the locking groove 6a and the protrusion 4b. Therefore, the stopper 6 that is once fitted and locked is not likely to come off even if a slight shock or vibration is applied, so that the transponder 5 is connected to the ignition key 1
Can be assembled so that it will not come off from the grip portion 3 even if it has been used for many years.

The base portion 7a of the key plate 7 is formed in a substantially U-shape having a recess 9 on the base end side thereof, and the accommodating portion 4 for accommodating the transponder 5 is formed at a position corresponding to the recess 9 to form the transponder. Since 5 is arranged in the concave portion 9, the grip portion 3 can be made compact even when the transponder 5 is embedded.

Further, since a substantially U-shaped base portion 7a extends inside the resin grip portion 3 along both side edges thereof, the ignition key 1 can be rotated while holding the grip portion 3. Also, the bending of the grip portion 3 due to the twisting stress can be prevented. Further, the transponder 5 is sandwiched from both sides by a base portion 7a extending in a substantially U shape, and protected by the base portions 7a extending on both sides from the twisting stress at the time of its rotating operation, the transponder 5 is used for many years and the rotating operation is repeatedly performed. Even if it is broken, it does not cause damage enough to damage the transponder 5.

The assembly work of the transponder 5 is as follows.
Since the transponder 5 is inserted into the accommodating portion 4 formed in the grip portion 3 of the key master 2 and the stopper 6 is fitted into the opening 4a thereof, the structure of fixing the resin case using the screw described in the prior art is used. It's easy to compare and finish. Further, the transponders 5 may be assembled to the key master 2 in a required number at the time of shipping, which is convenient for inventory management. (Second Embodiment) Next, a second embodiment in which the present invention is embodied in an ignition key will be described with reference to FIGS. The present embodiment differs from the first embodiment in that the transponder is integrally molded with the grip portion of the ignition key.

As shown in FIG. 4, the ignition key 10
Is formed by molding the base portion 11a of the key plate 11 together with the holder 12 and the transponder 5 with the grip portion 3 made of polyvinyl chloride (PVC). The protector 8 made of a molded resin is formed with two insertion holes 8a and a recess 8b (shown in FIG. 5) as in the first embodiment.

As shown in FIG. 6, the base portion 11a of the key plate 11 has a shape slightly different from that of the first embodiment, but is also formed in a substantially U-shape having a recess 13 on the base end side thereof. . Two locking grooves 14 are formed in the recessed portion 13 of the base portion 11a at positions facing each other. The holder 12 as a space holding member is made of polybutylene terephthalate (PB
T) and is formed into a substantially bottomed square tube shape having a housing portion 15. As a material of the holder 12, it is also possible to use polyacetal resin such as polyoxymethylene (POM). The transponder 5 is inserted into the accommodation portion 15 through the opening 15a. A guide groove 12a is formed on the side portion of the holder 12 along the outer periphery except for the opening 15a, and the holder 12 is provided with the guide groove 12a via the guide groove 12a.
It can be fitted into the recess 13 of the. A protrusion 16 engageable with the engagement groove 14 is engaged with the holder 12 at a position corresponding to each engagement groove 14, and the holder 12 is fitted into the recess 13 of the base portion 11a and the protrusion 16 and the engagement groove. It is fixed to the key plate 11 by engagement with 14. Further, in the housing portion 15, the holder 12 is fitted into the recess 13 of the base portion 11a, and the transponder 5 housed in the housing portion 15 is separated from the base portion 11a by a predetermined distance (number).
It is formed so as to be separated by about (mm).

As shown in FIG. 4, a base portion 1 having a substantially U shape.
The lengths of the extending portions that extend substantially parallel to each other across the recess 13 of 1a are set so as to secure a space for forming the insertion hole 8a in the protector 8. The holder 12 also has a shape in which a portion corresponding to the insertion hole 8a is cut out in order to secure a space for the insertion hole 8a.

Before the thermoforming of the resin for forming the grip portion 3, the holder 12 and the transponder 5 are assembled in advance in the recess 13 of the base portion 11a of the key plate 11.
The resin thermoforming is performed using a mold in which the grip portion 3 is molded, and is made of PVC melted by inserting the base 11a of the key plate 11 to which the transponder 5 and the holder 12 are assembled into the mold. This is done by pressing hot water into the mold. The transponder 5 has sufficient heat resistance to withstand heat of about 200 ° C. and can withstand this resin thermoforming.

Next, the operation of the ignition key 10 configured as described above will be described. When manufacturing the ignition key 10, first, the holder 12 and the transponder 5 are assembled to the base portion 11a of the key plate 11.
That is, the holder 12 is fitted into the recess 13 of the base 11a, and the transponder 5 is inserted into the housing portion 15 of the holder 12 through the opening 15a. The holder 12 once fitted into the recess 13 of the base 11 a is locked to the key plate 11 by the engagement of the projection 16 and the locking groove 14.

The pre-molded key plate 11 assembled in this state is inserted into the mold from the base 11a side and set. After that, hot water obtained by melting polyvinyl chloride (PVC) is press-fitted into a mold to perform resin thermoforming. At that time, since the holder 12 is locked to the key plate 11 by the engagement of the projection 16 and the locking groove 14, the holder 12 is not displaced from the key plate 11 by the pressure of the hot water press-fit into the mold. . Further, since the pressure of the hot water acts in the direction of pushing the transponder 5 into the accommodation portion 15, the transponder 5
Does not come out of the accommodation section 15. This resin thermoforming is performed in a state where the key plate 11 is horizontal or the base 11a side is lifted upward. Then, when the transponder 5 is taken out from the mold, the ignition key 10 in which the transponder 5 is completely embedded in the resin forming the grip portion 3 is formed.

Ignition key 10 thus manufactured
The transponder 5 embedded inside the grip portion 3 of
The holder 12 is arranged so as to be separated from the base 11a by a predetermined distance (about several mm). Further, the transponder 5 is fixed in the accommodating portion 15 without rattling by the resin that has entered the gap with the accommodating portion 15.

Therefore, the ignition key 10 of this embodiment is used.
According to this, since the transponder 5 is molded with resin and embedded in the inside of the grip portion 3, there is no fear that the transponder 5 will come off from the grip portion 3. Further, the transponder 5 molded with resin has excellent water resistance, and it is safe to drop the ignition key 10 in water, for example. Also, since the transponder 5 is assembled to the key plate 11 via the holder 12,
The transponder 5 can be arranged at a desired position at a predetermined distance (several millimeters) from the base portion 11a, and it is possible to prevent the electric wave transmitted from the transponder 5 from being disturbed by the metal key plate 11. .

The base portion 11a is the same as in the first embodiment.
Since the transponder 5 is formed into a substantially U shape and is housed in the recess 13 of the base 11a, the grip portion 3 does not bend when the ignition key 10 is rotated, and the load on the transponder 5 can be prevented. It can be formed to be as compact as the one with no built-in electronic component. Further, since the holder 12 is fixed to the key plate 11 by the engagement of the protrusion 16 and the locking groove 14, it is possible to prevent the holder 12 from being displaced due to the pressure of the hot water at the time of resin molding.

The present invention is not limited to the above-mentioned embodiments, but may be constructed as follows, for example, within a range not departing from the gist of the invention. (1) The shapes of the base portions 7a and 11a of the key plates 7 and 11 and the shape of the holder 12 can be appropriately changed according to the design shape of the grip portion 3. For example, as shown in FIG. 10, when only one key ring insertion hole 8a is formed in the grip portion 3, the base portion 11a of the key plate 11 and the holder 1 are formed.
The shape of No. 2 may be changed to the shape shown in FIGS. That is, as shown in FIGS. 8 and 9, of the two extending portions of the base portion 11a that extend in a substantially U-shape, the space of the insertion hole 8a is the extension portion on the side corresponding to the insertion hole 8a (the upper side in FIG. 9). It is also possible to form a concave portion 17 for securing the above and also to form a concave portion 18 in the holder 12 at a position corresponding to the insertion hole 8a. Further, a hole for a space for a key ring insertion hole may be formed in the base of the key plate. (2) The accommodating portion 4 is provided on the flat portion side of the grip portion 3 in the first embodiment.
An opening communicating with the transponder 5 is formed on the grip 3
It may be configured to be inserted from the flat portion side. (3) In each of the above-mentioned embodiments, the concave portions 9 and 13 are formed into the base portions 7a and 11
Although the opening is formed on the base end side of a, the position of the opening of the recess formed in the base for accommodating the electronic component can be appropriately set. For example, a configuration may be adopted in which a concave portion is formed so as to have an opening at a side edge portion (upper or lower portion of the base portion in FIGS. 1 and 4) of the base portion and the electronic component is inserted and attached from the side edge portion side of the grip portion. (4) In the second embodiment, the holder may be attached to the base of the key plate in the thickness direction thereof. Even if the concave portion 13 has a shape that narrows at the opening, the holder can be inserted and attached. (5) In the second embodiment, the holder and the transponder may be integrated instead of being separate bodies. This makes it easier to mount the transponder on the key plate. (6) In the second embodiment, the holder may be previously resin-molded and fixed to the base portion of the key plate, and the transponder may be simply attached to the holder during assembly. (7) The materials of the holder and protector are not limited to those in the above embodiment. For example, hydrocarbon resin such as polyethylene (PE), polypropylene (PP), acrylonitrile butadiene styrene copolymer (ABS), acrylic resin,
Halogen-containing resin such as fluororesin (TFE), polyether resin, urea resin (UF), amino resin such as melamine resin (MF), polyethylene terephthalate (PE)
T), polyester resin such as polycarbonate (PC), polyamide resin such as nylon (PA), polyurethane resin such as polyurethane (PUR), phenolic resin, epoxy resin, acetic acid fibrous resin (CA), acetic acid butyric acid fibrous resin It may be appropriately changed to a fibrous resin such as (CAB) or a protein resin such as casein resin (CS). (8) A plasticizer may be appropriately added to a resin such as PVC for molding the protector 8 to impart rubber elasticity to the grip portion 3. In the conventional assembling structure, the grip portion is required to have a certain hardness because of the screwing and locking mechanism, but the mold type of each embodiment imparts elasticity to the grip portion and grips the grip portion 3 You can improve the feel of your hands. (9) A magnetism generator and a receiver are installed on the key cylinder side of the door, and the door lock is released by the ignition keys 1, 1
It may be configured by an electronic lock mechanism that depends on an ID code transmitted from 0. (10) The present invention may be applied to an electronic component embedded key other than the ignition key of an automobile. For example, the invention may be applied to a door key for transmitting an ID code for identifying a resident of a building, a rocker key for transmitting a specific personal identification number code, or the like. (11) The electronic component embedded in the grip of the electronic component embedding key to which the present invention is applied is not limited to a transmitter such as a transponder, and various electronic components can be embedded in the grip.

The technical idea grasped from the above embodiment and not described in the scope of the claims will be described below together with the effect thereof. (1) In claim 5, a locking claw is formed on the spacing holding member, and a locking groove is formed on the base at a position corresponding to the locking claw, and the spacing holding member serves as the locking claw. It can be fixed at a predetermined position of the base by engaging with the locking groove. According to this structure, the spacing member is fixed at a predetermined position where the transmitter can be arranged at a position separated from the base by a predetermined distance by the engagement of the locking claw and the locking groove, so that it is press-fitted during resin molding. The position does not shift even if it receives the pressure of hot water.

[0046]

As described above in detail, according to the first aspect of the present invention, the gripping portion can be formed compactly even when the electronic component is accommodated, and the torsional stress at the time of the rotating operation of the key is achieved. The excellent effect of being able to protect electronic components from

According to the second aspect of the present invention, since the closing member closes the opening by fitting it, it cannot be removed even if a slight shock or vibration is applied, so that it will not come off from the grip portion even after many years of use. It has an excellent effect of being able to assemble electronic parts on.

According to the third aspect of the invention, since the electronic component is in a state of being molded with resin, the electronic component can be assembled so that it will not come off from the grip even after many years of use. It has an excellent effect of being excellent in water resistance.

According to the invention as set forth in claim 4, since the radio wave transmitted from the transmitter is not disturbed by the key plate made of metal, it can be reliably transmitted to the receiver.
Further, according to the invention as set forth in claim 5, the radio wave transmitted from the transmitter is not disturbed by the key plate made of metal, so that an excellent effect that it can be reliably transmitted to the receiver is exerted.

[Brief description of drawings]

FIG. 1 is a plan sectional view of an ignition key according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of a main part of an ignition key.

FIG. 3 is an exploded perspective view of an ignition key.

FIG. 4 is a plan sectional view of an ignition key according to a second embodiment.

FIG. 5 is a side sectional view of a main part of an ignition key.

FIG. 6 is an exploded perspective view showing a key before molding.

FIG. 7 is a perspective view of an ignition key.

FIG. 8 is an exploded perspective view showing a key before molding of another example.

FIG. 9 is a plan sectional view of an ignition key.

FIG. 10 is a perspective view of an ignition key.

[Explanation of symbols]

1, 10 ... Ignition key, 3 ... Gripping part, 4 ... Housing part, 4a ... Opening, 5 ... Transponder as electronic component and transmitter, 6 ... Stopper as closing member, 7,10
... key plate, 7a, 11a ... base part, 8 ... protector which constitutes a gripping part, 9, 13 ... concave part, 12 ... holder as a space holding member, 15 ... accommodating part.

Claims (5)

[Claims] 1. A key plate, characterized in that recesses (9, 13) for accommodating an electronic component (5) are formed in a base portion (7a, 11a) which is molded with resin by molding a grip portion (3). . 2. The housing (4) is formed at a position corresponding to the recess (13) of the base (7a) of the key plate (7) according to claim 1, and the housing (4) is external. A state in which a holding part (3) is formed by molding a resin in a state where an opening (4a) for communication is provided, and an electronic component (5) inserted from the opening (4a) is housed in the housing part (4). 2. The electronic component embedding key characterized in that the opening (4a) is closed by fitting the closing member (6). 3. The key plate (1) according to claim 1.
The electronic component (5) is placed in the recess (13) of the base (11a) of (1).
An electronic component embedding key, characterized in that the base portion (11a) is molded with a resin together with the electronic component (5) to form the grip portion (3) in a state where the above is arranged. 4. The electronic component is used as a transmitter (5), and the accommodating part (4) is accommodated in the accommodating part (4) so that the transmitter (5) is at a predetermined distance from the key plate (7). The electronic component-embedded key according to claim 2, wherein the key is formed so that it can be placed in a separated state. 5. The electronic component is a transmitter (5), and the transmitter (5) is a base portion (11) of the key plate (11).
The electronic component-embedded key according to claim 3, wherein the key is embedded in the concave portion (13) of (a) at a predetermined distance from the key plate (11) via a spacing member (12).