JPH1072959A - Key with built-in electronic parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of a surface defect at the time of molding a molded resin layer in a key with built-in electronic parts. SOLUTION: This key with built-in electronic parts has a key head part 7 with its surface covered with a soft molded resin layer 1 and holds electronic parts in a chip holding part 50 formed in a hard resin case 5 arranged in the key head part 7 and composed of a blade holding piece 2 accommodating one end part of a key blade 4 in a blade storage recessed part 20, and a sliding case piece holding one end part of the key blade 4 in cooperation with the blade holding case piece 2. In this case, the blade holding case piece 2 and the sliding case piece are provided with fit-in parts fitted to each other at the time of sliding the sliding case piece along the blade holding case piece 2 so as to prevent separation in a separating direction, and the sliding case piece is elastically locked to the blade holding case piece 2 or the key blade 4 in a sliding terminal position so as to prevent separation in the separating direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component built-in key in which electronic components such as a transponder chip are built in a key head.

[0002]

2. Description of the Related Art An electronic component built-in key in which an electronic component such as a transponder chip is built in a key head portion is disclosed in Japanese Patent Application Laid-Open No. Hei 8-93282.

In this conventional example, a key head portion 7 is formed by covering a case portion (hard resin case 5) mounted on the tip portion of a key blade 4 with a mold resin layer 1, as shown in FIG. The hard resin case 5 is formed by a pair of case pieces 5a, 5a, and the leg portion 5b formed on one case piece 5a is resiliently locked in a locking hole 5c of the other case piece so as to sandwich the key blade 4. Interconnected.

[0004]

However, in the conventional example described above, in order to resiliently lock the leg 5b into the locking hole 5c, the gap d is at least larger than the locking dimension of the hook 5d.
Must be secured between the locking hole 5c and the leg 5b. When the mold resin layer 1 is molded, the mold resin flows into the gap d, and the thickness of the mold resin layer 1 at the corresponding portion is reduced. There is a possibility that the film becomes locally thick and causes sink marks on the surface.

The present invention has been made in order to solve the above-mentioned drawbacks, and an object of the present invention is to provide an electronic component built-in key which can prevent the occurrence of surface defects during molding of the mold resin layer 1.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to provide a key blade 7 whose surface is covered with a soft mold resin layer 1 and which is disposed in the key head 7 and has a key blade in a blade accommodating recess 20. Blade holding case piece 2 for accommodating one end of the blade 4, and blade holding case piece 2
An electronic component built-in key for holding an electronic component 6 in a chip holding portion 50 formed in a hard resin case 5 formed of a sliding case piece 3 holding one end of a key blade 4 in cooperation with the key blade 4. A fitting portion that fits into the blade holding case piece 2 and the sliding case piece 3 when the sliding case piece 3 is slid along the blade holding case piece 2 to prevent separation in the peeling direction. 51 is provided to provide an electronic component built-in key which resiliently locks the sliding case piece 3 to the blade holding case piece 2 or the key blade 4 at the sliding end position to prevent separation in the sliding direction. Achieved.

A key head 7 formed at one end of the key blade 4 has a hard resin case 5 attached to the tip of the key blade 4, and then a molded resin layer 1 is molded on the outer surface to hold a chip in the hard resin case 5. The electronic component 6 is housed in the portion 50 and formed. The hard resin case 5 includes a blade holding case piece 2 and a sliding case piece 3, and the key blade 4 is fitted and held in the blade accommodating recess 20 of the blade holding case piece 2.

[0008] The sliding case piece 3 is
Holding case piece 2 in which key blade 4 is fitted to
Is connected to the blade holding case piece 2 by sliding along, and the fitting portion 51 which is fitted to each other by the sliding operation prevents separation in the peeling direction, that is, the direction perpendicular to the sliding surface. The case piece 3 is elastically locked to the blade holding case piece 2 or the key blade 4 to prevent separation in the sliding direction.

Here, the elastic locking means not only the case where the hook formed on the sliding case piece 3 is elastically deformed and then locked on the locked portion of the blade holding case piece 2 but also the blade holding. The case in which the hook formed on the case piece 2 side is bent and locked to the sliding case piece 3 is also included.

When the locking direction of the sliding case piece 3 is set to the sliding direction, the locking portion is disposed not only at the sliding interface but also at the outer peripheral portion of the blade holding case piece 2. However, the direction of the elastic deformation for locking always faces outward of the sliding case piece 3 or the blade holding case piece 2, and the relief for locking is set in the blade holding case piece 2 as in the conventional example. Since there is no necessity, an extra gap does not occur on the outer circumference as in the related art, and the occurrence of surface defects due to the flow of the mold resin into the gap can be prevented.

According to the second aspect of the present invention, there is provided an electronic component built-in key having high torsion strength. That is, the electronic component 6 is arranged in a key shape with respect to the sliding interface between the blade holding case piece 2 and the sliding case piece 3. To be arranged in a key shape means that the relative movement along the sliding interface between the blade holding case piece 2 and the sliding case piece 3 by the electronic component 6 functioning as a key as shown in FIG. A state in which the sliding interface is interposed between the blade holding case piece 2 and the sliding case piece 3 so that concave portions 21 and 31 are formed.
The chip holding portion 5 formed by these concave portions 21 and 31
This can be achieved by storing the electronic component 6 in the area 0.

Therefore, in the present invention, since the electronic component 6 exerts a resistance against the shearing force generated along the sliding interface when the key is subjected to the twisting operation, the electronic component 6 is moved to the locking portion in the sliding direction. Is reduced, and the occurrence of displacement between the blade holding case piece 2 and the sliding case piece 3 due to the twisting operation is reliably prevented. The shear force between the case pieces does not necessarily have to be directly applied to the electronic component 6. For example, the cap member 8 attached to close the opening of the chip holding portion 50 functions as a key, and It is also possible to prevent the load.

In the first or second aspect of the present invention, the fitting portion 51 can be formed on a sliding interface that is not exposed to the outside. When formed on the sliding front end edge and the sliding rear end edge of the moving case piece 3, the span between the fitting portions 51 can be maximized, so that the resistance to the twisting operation is increased. be able to.

In this case, by configuring as described in claim 4, it is possible to improve the drag in the sliding direction. That is, in the invention according to claim 4, one of the sliding case piece 3 and the blade holding case piece 2 is provided with a protruding portion 52b that can be locked in a locking concave portion 52a formed in the other, and a blade The opening 51b of the holding case piece 2 is formed by an inclined surface having a lower height as the ceiling wall approaches the edge of the blade holding case piece 2.

With the sliding operation of the sliding case piece 3, the sliding case piece 3 is moved from the sliding interface by the projection 52b in a state where the tip, ie, the insertion piece 51a is lifted, and is moved to the corresponding opening 51b. Reach. The opening 51b of the blade holding case piece 2, which has an inclined surface that becomes lower in height as the ceiling wall approaches the edge of the blade holding case piece 2, is sufficient to guide the insertion piece 51a that has risen at the entrance. The insertion piece 51a has an opening 51b.
After being in contact with the ceiling wall surface, the downward pressing force is applied by the inclined surface, and the elastic member is elastically deformed and moves toward the end of the opening 51b, that is, toward the edge of the blade holding case piece 2.

In order to move the sliding case piece 3 toward the rear end of the sliding operation in a state where the projection 52b is locked in the locking recess 52a, a force other than the unlocking force between the projection 52b and the locking recess 52a is required. In addition, a force for elastically deforming the sliding case piece 3 is required,
A large resistance can be generated against the displacement.

According to the fifth aspect of the present invention, the fitting portion 51
Are provided. That is, in the present invention, the fitting portion 51 is composed of a dovetail groove 51c and a tenon portion 51d which can be fitted into the dovetail groove portion 51c, and the tenon portion 51d is moved to the dovetail groove portion 51c by sliding the slide case piece 3. The mating prevents the separation in the peeling direction.

In the first to fifth aspects of the present invention, the sliding direction of the sliding case piece 3 can be set to, for example, the longitudinal direction of the key blade 4, a direction orthogonal thereto, or an oblique direction. When the sliding direction is set in the longitudinal direction of the key blade 4, the sliding case piece 3 can be locked using the head portion 40 of the key blade 4 as described in claim 6.

That is, in the sixth aspect of the present invention,
The key head portion 7 has a keying insertion hole 70 formed by covering the hole portion 41 formed in the head portion 40 of the key blade 4 with the mold resin layer 1, and the fitting portion 51 is formed along the longitudinal direction of the key blade 4. At the same time, the sliding case piece 3 locks the locking hook 52c formed at the leading end on the sliding side to the peripheral wall of the hole 41 to prevent separation in the sliding direction. The end surface of the locking hook 52c can be used as positioning during molding by making contact with the molding portion of the molding through-hole 70 of the molding die of the molding resin layer 1; Can be prevented. In addition, the end face of the locking hook 52c exposed from the mold resin layer 1 during molding of the mold resin layer 1 is disposed on the inner peripheral wall of the discreet keying insertion hole 70, so that the appearance is not impaired.

[0020]

FIG. 1 to FIG. 4 show an embodiment of the present invention. The electronic component built-in key has a key head portion 7 formed at the tip of the key blade 4, and the key head portion 7 is a hard resin case 5 for housing the electronic component 6.
And a soft mold resin layer 1 constituting an outer skin.

The key blade 4 is formed with a head portion 40 at one end, and a hole portion 41 for forming a later-described keying insertion hole 70 is formed in the center of the head portion 40. The hard resin case 5 includes a blade holding case piece 2 and a sliding case piece 3 obtained by molding a hard resin material such as polyacetal resin, and the key blade 4 has a depth substantially matching the thickness dimension of the key blade 4. Is placed and set in the blade accommodating recess 20 formed at the center.

The blade holding case piece 2 has a concave portion 21 formed by cutting a part of the side wall in a U-shape along the blade accommodating concave portion 20, and the rear end face, that is, the head portion 40 of the key blade 4 corresponds to the concave portion. The head 40
The positioning piece 22 which abuts on the hole 41 is protruded. The positioning piece 22 has a height that does not protrude from the surface of the key blade 4 so as not to hinder the sliding of the sliding case piece 3 on the blade holding case piece 2.

A stepped portion 32 having an opening 51b at the center is bulged at one side edge of the blade holding case piece 2, and a protruding portion 52b is protruded from a front side thereof. The side edge portion is made thin to form the insertion piece 51a. As shown in FIG. 2B, the ceiling wall of the opening 51b is formed by an inclined surface that is low at the outer peripheral portion and gradually increases toward the inside.

The sliding case piece 3 is formed in substantially the same shape as the blade holding case piece 2 in plan view so that a step does not unnecessarily occur in the outer peripheral portion when the sliding case piece 3 is connected to the blade holding case piece 2. Is provided with a recess 31 having the same shape as the recess 21 on the blade holding case piece 2 side. Also,
The side edge of the sliding case piece 3 is thin, and an insertion piece 51a that can be fitted to the opening 51b of the blade holding case piece 2 is formed, and the cover 33 is directed downward on the other side edge. An opening 51 b is formed in the cover 33 so that the insertion piece 51 a of the blade holding case piece 2 can be fitted in the cover 33. As will be described later, the opening 51 on the blade holding case piece 2 side while elastically deforming the insertion piece 51 a of the sliding case piece 3.
In order to fit into the blade holding case piece 2, the thickness of the insertion piece 51a is made equal to the narrowest part of the opening 51b on the blade holding case piece 2 side, that is, the height of the outer peripheral edge.

Further, on the back surface of the sliding case piece 3, there is formed a locking concave portion 52a for locking the projection 52b on the blade holding case piece 2 side at a position where the outer circumference matches the outer circumference of the blade holding case piece 2. You. The locking recess 52a is provided on the blade holding case piece 2 side, and the protrusion 52 is provided on the sliding case piece 3 side.
b may be provided.

The sliding case piece 3 configured as described above
Is connected to the blade holding case piece 2 by sliding along the upper surface of the blade holding case piece 2 in a direction orthogonal to the key blade 4. When the sliding case piece 3 is slid to the side, the edge of the sliding case piece 3 on the insertion piece 51a side is slightly raised by the protrusion 52b on the blade holding case piece 2 side, and the blade holding case piece 2 side Opening 5
Move in the 1b direction. The height of the opening 51b on the side facing the insertion piece 51a is set high enough to absorb the floating of the insertion piece 51a, and the insertion piece 51a of the sliding case piece 3 first contacts the ceiling wall of the opening 51b. Thereafter, it is guided in the direction of the low-profile outer peripheral edge while being gradually elastically deformed. When the insertion piece 51a of the sliding case piece 3 fits into the opening 51b, the insertion piece 51a of the blade holding case piece 2 fits into the opening 51b of the sliding case piece 3, and the outer circumferences of both fit. In this state, the projection 52b falls into the locking recess 52a, and the connection is completed.

The mold resin layer 1 is formed of a soft synthetic resin material such as a vinyl chloride resin and is integrally molded with one end of a sub-assembly body in which a key blade 4 is mounted on a hard resin case 5. In the molding of the mold resin layer 1, the positioning piece 22 is inserted into the sealing through hole 7 in order to accurately perform longitudinal positioning in the molding die and obtain an accurate under-neck dimension.
This process is performed by abutting the protrusion 52b of the mold that forms the “0”.
By exposing the positioning piece 22 to the peripheral wall of the keying insertion hole 70 in this manner, the end face of the positioning piece 22 that is exposed to the outer surface after molding is not noticeable from the outside, and a good appearance can be obtained. When the molding resin layer 1 is molded, the molding resin material is
The open end face of the chip holding portion 50 is closed by a mold or a separate mask so that the chip holding portion 50 does not flow into the chip holding portion 50.

As shown in FIG. 4, after the electronic component 6 is inserted into the key head portion 7 whose outer skin is covered with the soft mold resin layer 1 as described above, the opening of the chip holding portion 50 is closed by a cap. The electronic component built-in key is manufactured by being closed by the member 8.

FIGS. 5 to 7 show another embodiment of the present invention. In the description of the present embodiment, the same components as those of the above-described embodiment are denoted by the same reference numerals in the drawings, and description thereof will be omitted. Since the formation of the mold resin layer 1 and the mounting of the electronic component 6 are the same as those in the above-described embodiment, only the formation of the sub-assembly will be described.

In the present embodiment, the blade holding case piece 2 is provided with two dovetail grooves 51c along the key blade 4, and the dovetail groove 51 is formed on the sliding case piece 3 side.
A tenon portion 51d protruding from the slide case piece 3 is provided at the rear end surface of the sliding case piece 3, that is, the end surface portion corresponding to the head portion 40 of the key blade 4, and can be engaged with the hole 41 of the head portion 40. A locking hook 52c is protruded.

The sliding case piece 3 is connected to the blade holding case piece 2 by sliding in the longitudinal direction of the key blade 4, and at a position where the outer circumferences coincide with each other, a locking hook 52 is provided.
c is elastically locked to the key blade 4 to prevent separation in the sliding direction. Further, the locking hooks 52c are used as positioning means at the time of molding the mold resin layer 1, similarly to the positioning pieces 22 in the above-described embodiment.

[0032]

As is apparent from the above description, according to the present invention, it is possible to prevent the occurrence of surface defects during molding of the mold resin layer.

[Brief description of the drawings]

FIG. 1 is a view showing the present invention, and is a cross-sectional view along a surface of a key blade.

FIGS. 2A and 2B are cross-sectional views of FIG. 1, wherein FIG. 2A is a cross-sectional view taken along line AA of FIG. 1, and FIG. 2B is a cross-sectional view taken along line BB of FIG.

FIG. 3 is an exploded perspective view showing a state in which a sub-assembly body is formed.

FIG. 4 is an exploded perspective view showing a loaded state of an electronic component.

FIG. 5 is a view showing another embodiment of the present invention, and is a cross-sectional view along a surface of a key blade.

6A and 6B are cross-sectional views of FIG. 5, wherein FIG. 6A is a cross-sectional view taken along line AA of FIG. 5, and FIG. 6B is a cross-sectional view taken along line BB of FIG.

FIG. 7 is an exploded perspective view showing a state in which a sub-assembly body is formed.

8A and 8B are views showing a conventional example, in which FIG. 8A is a front view, and FIG. 8B is a cross-sectional view taken along line BB of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mold resin layer 2 Blade holding case piece 20 Blade accommodating concave part 3 Sliding case piece 4 Key blade 40 Head part 41 Hole 5 Hard resin case 50 Chip holding part 51 Fitting part 51a Insertion piece 51b Opening 51c Dovetail 51d Mortice 52a Locking concave portion 52b Projecting portion 52c Locking hook 6 Electronic component 7 Key head portion 70 Keying insertion hole

Claims (6)

[Claims] 1. A blade holding case piece having a key head portion whose surface is covered with a soft mold resin layer, disposed in the key head portion, and accommodating one end of a key blade in a blade accommodating recess, and a blade holding case piece. An electronic component built-in key for holding an electronic component in a chip holding portion formed in a hard resin case formed of a sliding case piece for holding one end of a key blade in cooperation with the blade holding case piece. The moving case piece is provided with a fitting portion which is fitted to each other when the sliding case piece is slid along the blade holding case piece to prevent separation in the peeling direction. An electronic component built-in key that resiliently locks to a blade holding case piece or a key blade at a moving end position to prevent separation in a sliding direction. 2. The electronic component according to claim 1, wherein said electronic component is arranged in a key shape with respect to a sliding interface between said blade holding case piece and said sliding case piece to increase a shear resistance between said blade holding case piece and said sliding case piece. The electronic component built-in key according to claim 1. 3. The fitting part comprises an insertion piece and an opening, and an opening is arranged on one side of the blade holding case at an edge of the sliding front end of the sliding case piece. 3. The electronic component built-in key according to claim 1, wherein an opening is disposed on one side of the sliding case at an edge of the sliding rear end. 4. One of the sliding case piece and the blade holding case piece is provided with a projection which can be locked in a locking recess formed in the other, and the opening of the blade holding case piece has 4. The electronic component built-in key according to claim 3, wherein the ceiling wall is formed by an inclined surface having a height decreasing toward an edge of the blade holding case piece. 5. The electronic component built-in key according to claim 1, wherein said fitting portion comprises a dovetail portion and a tenon portion capable of being fitted into said dovetail portion. 6. The key head portion has a keying insertion hole formed by covering a hole portion formed in the head portion of the key blade with a mold resin layer, and a fitting portion is formed along a longitudinal direction of the key blade. The moving case piece locks a locking hook formed at the leading end on the sliding side to the peripheral wall of the hole to prevent separation in the sliding direction, and fixes the end face of the locking hook to the molding metal of the mold resin layer. 6. The electronic component built-in key according to claim 5, wherein positioning is performed at the time of molding by bringing the mold into contact with a molding portion of the keying insertion hole.