JP4871757B2 - Key material - Google Patents

Description

  The present invention relates to a key material incorporating an electronic component.

  Electronic doors such as IC tags are used in recent housing and vehicle doors in order to automatically authenticate a specific user when the door is opened and can be unlocked or unlocked, or automatically when the door is closed. in use. Also, locking and unlocking with electronic components cannot be used during a power failure or when the battery is discharged, so a mechanical key is also required. And when these are comprised separately, since inconvenience, such as forgetting to carry either one, arises, the key material which incorporated the electronic component in the key is provided.

  Prior art document information relating to such a key material incorporating an electronic component includes the following.

Japanese Patent No. 3009596 JP 2004-162326 A

  Patent Document 1 describes a key material in which an electronic component such as an IC tag is primarily molded with a resin, and the molded body is further fitted with a key plate, and then further molded with a resin. . Patent Document 2 describes a key material in which an electronic component is disposed on a head portion of a blade and is mounted so as to be sandwiched between a pair of hard covers.

  However, since the former key material needs to be molded twice to mount an electronic component, there is a problem that the manufacturing process is complicated and the cost is increased. In addition, the latter key material does not require molding, so there is no problem in cost. However, the assembly workability is poor because it is necessary to assemble the pair of covers by engaging the electronic parts in a positioned state. There's a problem.

  The present invention has been made in view of the conventional problems, and an object of the present invention is to provide an inexpensive key material with good assembling workability.

  In order to solve the above problems, a key material of the present invention includes a key plate having a case for housing an electronic component, a blade portion in which a preset key code is formed, and a head portion in which the case housing portion for housing the case is formed. And in a key material comprising a cover that covers the head part and the case, the cover has an annular shape in which an insertion hole is formed so that the head part of the key plate is located inside, and the case, A protrusion is provided in contact with the leading edge of the cover in the insertion direction of the key plate to restrict the movement of the cover in the insertion direction.

  The key material of the present invention can be assembled by assembling a case accommodating an electronic component such as an IC tag into the case accommodating portion of the key plate and then inserting the head portion of the key plate into the insertion hole of the cover. That is, since it is not necessary to perform molding to incorporate the electronic component, it is possible to prevent an increase in manufacturing cost and it is not necessary to take measures against heat of the electronic component. Further, since the cover is not assembled with a pair of cover parts, but only inserted through the insertion hole of one cover, the assembly workability can be improved.

  Furthermore, since the operation of inserting the cover into the key plate is restricted by contacting the protrusion, the cover can be reliably mounted at a predetermined position. Moreover, since the protrusion is provided in the case where the key plate is mounted, the key plate can be formed with a uniform thickness. As a result, since the key plate can be easily processed, it is possible to prevent the manufacturing cost from increasing.

  In this key material, the case accommodating portion of the key plate is configured by a notch portion having one side edge of the head portion opened, and a pair of the protruding portions are provided so as to face both surfaces of the case. It is preferable that the edge of the notch is sandwiched between the portions. Thus, since it is set as the structure which accommodates a case in a notch part, the thickness of the head part of a key material can be made thin. And since the state accommodated in the key plate by a pair of projection part can be maintained, assembly workability | operativity can be improved. In addition, since the projecting portion is used for both positioning with respect to the key plate and restriction of the cover, the structure can be simplified and the manufacturing cost can be reduced.

  In this case, it is preferable that an engaging claw portion that engages with an edge of the cutout portion on the rear side in the insertion direction of the cover is provided on the inner surface of the insertion hole of the cover. If it does in this way, the key material of an assembly state cannot be disassembled easily. Moreover, since it is not necessary to fix with a screw for fixation, the failure | damage by a load concentrating on a specific part can be prevented.

  Preferably, the protrusion of the case is configured to be exposed to the outside from the cover, and the protrusion is also used as an identification unit for identifying a difference in transmission code of an electronic component accommodated in the case. . If it does in this way, the holder designated beforehand by each user can be distinguished by seeing a projection part. For example, when this key material is applied to a locking / unlocking device for an apartment house such as an apartment, the number of key materials to be handed to each dwelling unit is color-coded. Can be done individually. That is, without providing a new structure for identification, the protrusion provided on the case that plays the role of holding the electronic component also serves as the identification, so that the manufacturing cost can be reduced.

  In the key material of the present invention, the case in which the electronic component is accommodated is assembled to the case accommodating portion of the key plate without being molded, and then assembled by inserting the head portion of the key plate into the insertion hole of the cover. Therefore, it is possible to prevent the manufacturing cost from increasing. Further, since the cover is not assembled with a pair of cover parts, but only inserted through the insertion hole of one cover, the assembly workability can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1A and 1B and FIGS. 2A and 2B show a key material according to an embodiment of the present invention. As shown in FIG. 1 (A), the key material is generally composed of a key plate 10, a case 16, and a cover 22, and an IC tag 26, which is an electronic component, is accommodated in the case 16 so as to be integrated. It is assembled.

  The key plate 10 is made of metal, and includes a blade portion 11 that extends in a substantially rectangular shape and a head portion 13 that has a substantially oval shape, and has a uniform thickness. The blade portion 11 has a key code 12 formed of a preset groove on the upper and lower surfaces having a large surface area. The key code 12 is changed corresponding to the cylinder lock. The head portion 13 is connected to one end in the longitudinal direction of the blade portion 11, and is provided so that the longitudinal direction is the same direction as the longitudinal direction of the blade portion 11. The head portion 13 is provided with a groove-like case housing portion 14 composed of a rectangular cutout having one side edge located in a direction orthogonal to the longitudinal direction as an opening portion 14a. The head portion 13 is provided with a key ring insertion hole 15 provided in the vicinity of the end portion located on the side opposite to the blade portion 11 so as to penetrate through the wall thickness so as to form an elliptical shape. The key ring insertion hole 15 is not limited to an elliptical shape in plan view, and can be changed as desired, such as a circular shape or a rectangular shape.

  The case 16 is made of resin (for example, ASA (acrylate styrene acrylonitrile)) and is accommodated by being inserted into the case accommodating portion 14. The case 16 has the same thickness as the key plate 10, and is formed in a rectangular shape having a size that allows a predetermined gap to be formed between the inner periphery of the case housing portion 14. An accommodation recess 17 that is recessed in a circular shape for accommodating the IC tag 26 is formed on one surface of the case 16. In addition, a rib 18 that bulges in a semi-cylindrical shape is provided on the outer peripheral edge of the case 16 in order to prevent rattling caused by a gap generated between the case 16 and the inner peripheral edge.

  The case 16 of the present embodiment is provided with a pair of protrusions 19 and 19 that form a substantially right triangle so as to face both the upper and lower surfaces. The protrusions 19, 19 are formed so as to be positioned at the center in the width direction of the case housing portion 14 in the housing state in the case housing portion 14. In addition, it is located on the blade portion 11 side when housed. When the cover 22 to be described later is attached, as shown in FIGS. 2A, 2B and 3A, the leading edge of the cover 22 in the insertion direction is perpendicular to the insertion direction. By abutting against the abutting surface 19a of the extending projections 19, 19, the movement of the cover 22 in the insertion direction is restricted. The opposing surfaces 19b and 19b of the protrusions 19 and 19 are formed so as to protrude outward from the outer peripheral edge (frontward in the cover insertion direction), and the edges of the case housing portion 14 are formed by the opposing surfaces 19b and 19b. It is comprised so that the surface of the head part 13 located in may be pinched | interposed. In the protrusions 19 and 19, a surface 19c extending between the contact surface 19a and the facing surface 19b is an inclined surface or a curved surface that matches a surface shape of a cover 22 described later. Furthermore, the surface 19c is colored with various color schemes set in advance based on the transmission code of the IC tag 26 to be accommodated, and is also used as an identification means for identifying the transmission code by the difference in the color scheme.

  Further, in the case 16 of the present embodiment, an engagement claw portion 25 of a cover 22 (to be described later) can be engaged with the inner surface of the case housing portion 14 on the upper and lower sides on the opposite side to the protruding portions 19 and 19. Notches 20 are provided. Further, the edge ridge provided with the notches 20 and 20 is a chamfer 21. The chamfered portion 21 is vertically displaced when the case 16 is attached to the key plate 10 in a cantilevered manner by the protrusions 19, 19, and the edge protrudes from the surface of the key plate 10. This is to prevent obstruction of mounting of the cover 22 described later.

  The cover 22 is made of resin (for example, polypropylene) and covers the intermediate position including the case housing portion 14 in the head portion 13 of the key plate 10. The cover 22 has a substantially infinite shape in plan view in which long oval long opposing edges 22 a and 22 a are curved inward, and is thicker than the key plate 10. The cover 22 is provided with an insertion hole 23 that passes through an intermediate position of the wall thickness between the opposing edges 22a and 22a and allows the head portion 13 to be positioned inside so as to form a rectangular shape. . As a result, the cover 22 has an annular shape in a side view.

  The cover 22 of the present embodiment is provided with notches 24 and 24 that are internally fitted so that the protrusions 19 and 19 are exposed to the outside at the center of the leading edge in the insertion direction with respect to the head portion 13. And the surface located in the both sides of this notch part 24 is comprised so that a shape may correspond with the surfaces 19c and 19c of the projection parts 19 and 19. FIG. Further, an engagement claw portion having a substantially right triangle shape that engages with the inner edge of the case housing portion 14 on the rear side in the insertion direction so as to be located on the rear side in the insertion direction on the inner surface of the insertion hole 23 of the cover 22. 25 and 25 are projected.

  The IC tag 26 is for automatically authenticating a specific user when the door of a house or vehicle is opened, and can be unlocked or automatically unlocked, or automatically locked when the door is closed, as in the past. is there. The IC tag 26 incorporates an antenna (not shown). For example, a weak electromotive force is generated by receiving a response signal from a control unit mounted on a house or a vehicle. Output different transmission codes. Thereby, the control part which received the transmission code via the receiver performs unlocking or locking.

  When assembling the key material having the above-described configuration, as shown in FIG. 1A, first, as a first step, the IC tag 26 is accommodated in the accommodating recess 17 of the case 16 (IC tag insertion direction X). At this time, an adhesive or a pressure-sensitive adhesive tape may be provided in the housing recess 17 and the IC tag 26 may be fixed in the housing recess 17 so as not to move.

  Next, as a second step, the case 16 accommodating the IC tag 26 is accommodated (case insertion direction Y) in the case accommodating portion 14 of the key plate 10. At this time, the protrusions 19 are arranged so as to be located on the blade part 11 side, and the edges of the case housing part 14 are inserted between the protrusions 19 and 19 from above and below. Thereby, the case 16 can be maintained in a state where it does not fall off even if the operator does not hold it by hand. Moreover, since this insertion work is the structure which provided the rib 18 in the outer periphery of case 16, the workability | operativity at the time of insertion can be improved. Specifically, since the resistance between the outer peripheral edge of the case 16 and the inner peripheral edge of the case housing portion 14 can be reduced, workability can be improved. In addition, when a manufacturing error occurs in the case housing portion 14 or the case 16, particularly when the case 16 is formed larger than the case housing portion 14, the assembling work becomes very difficult. In this embodiment, the rib 18 is deformed so as to be crushed, so that it is possible to prevent the assembly from being impossible.

  Finally, as a third step, the cover 22 is inserted into the head portion 13 of the key plate 10 in which the case 16 is accommodated (cover insertion direction Z) to cover it. At this time, the cutout portions 24, 24 are arranged and inserted so as to be positioned at the front end in the insertion direction. In this insertion work, first, the engaging claws 25 and 25 protruding into the insertion hole 23 abut against the edge of the head portion 13. Therefore, when the cover 22 is press-fitted so as to be deformed outward, the engaging claws 25, 25 exceed the key ring insertion hole 15, and the notch 24 is brought into contact with the contact surfaces 19 a, 19 a of the protrusions 19, 19. When abutting, the insertion is restricted, and the engaging claw portion 25 is located in the notch portion 20 of the case 16. Thereby, the cover 22 is elastically restored to the original shape, and the engaging claw portion 25 is engaged with the inner edge of the case housing portion 14. In addition, when the cover 22 is mounted, the cover 22 abuts against the chamfered portion 21 even when the cantilevered case 16 is inclined and the opposite edge of the protrusions 19, 19 protrudes from the surface of the key plate 10. Thus, the case 16 can be smoothly mounted while being pushed into the case accommodating portion 14.

  As described above, in the key material of the present invention, after the case 16 containing the electronic component such as the IC tag 26 is assembled to the case accommodating portion 14 of the key plate 10, the cover 22 is attached to the head portion 13 of the key plate 10. It can be assembled by inserting.

  In other words, since it is not necessary to perform molding to incorporate the electronic component, it is possible to prevent an increase in manufacturing cost, and it is not necessary to take a heat countermeasure for the electronic component. In addition, the appearance of sink marks caused by the difference in thickness can be prevented from being impaired. In addition, since the cover 22 is not assembled with a pair of cover parts, but is simply inserted through the insertion hole 23 of one cover 22, the assembly workability can be improved. That is, since it is not necessary to fix with screws for fixing, it is possible to prevent damage due to concentration of load on a specific portion.

  Furthermore, the operation of assembling the cover 22 with respect to the key plate 10 is regulated by coming into contact with the protrusions 19, so that the cover 22 can be reliably mounted at a predetermined position. Moreover, since the protrusion 19 is provided on the case 16 attached to the key plate 10, the key plate 10 can be formed with a uniform thickness. As a result, the processing of the key plate 10 is easy, so that the manufacturing cost can be prevented from increasing.

  Moreover, since the case 16 is accommodated in the case accommodating part 14 which consists of a notch part, the thickness of the head part 13 of a key material can be made thin. Moreover, since the protrusion 19 serves both as positioning with respect to the key plate 10 and restriction of the cover 22, it is possible to simplify the structure and reduce the manufacturing cost.

  The key material assembled in this way has a symmetrical shape as shown in FIG. 4 and FIGS. 5A and 5B, and the back surface is a blade as shown in the front view of FIG. If it arrange | positions so that it may extend in the same direction with respect to the part 11 and the head part 13, it will appear the same as a front view, and it can be inserted in a cylinder lock from any direction.

  In this assembled state, as shown in FIGS. 1B and 3, the protrusions 19 and 19 formed on the case 16 are exposed to the outside from the notch 24 of the cover 22. And in this embodiment, since the projection part 19 of the case 16 is used also as an identification means by coloring, the holder designated beforehand by each user can be distinguished. For example, when this key material is applied to a locking / unlocking device for an apartment house such as an apartment, the number of key materials to be handed to each dwelling unit is color-coded. Can be done individually. That is, without providing a new structure for identification, the projecting portion 19 provided on the case 16 serving to hold the electronic component also serves as the identification, so that the manufacturing cost can be reduced.

  In the assembled state, the key ring insertion hole 15 formed in the key plate 10 penetrates the cover 22 and is exposed. Since the key ring insertion hole 15 is provided in the metal key plate 10, the key material is not broken even when a large force (tension) is applied to the key ring insertion hole 15.

  Further, as shown in FIG. 6A, the cover 22 has a notch 24 at the front end in the insertion direction so that the protrusion 19 is fitted inside, and an engagement claw portion 25 on the rear side in the insertion direction of the case accommodating portion 14. Since it engages with the inner edge, it is possible to reliably maintain a state that cannot be easily separated (disassembled). Further, as shown in FIG. 6 (B), the case 16 is formed to have the same thickness as the key plate 10, and the protrusion 19 is fitted in the notch 24. There is no backlash in the housing 14 and the cover 22.

  In addition, the key material of this invention is not limited to the structure of the said embodiment, A various change is possible.

  For example, in the above embodiment, the cover 22 is inserted from the end portion on the opposite side of the blade portion 11 in the head portion 13, but the protruding portion 19 is positioned on the opposite side of the blade portion 11 with respect to the case housing portion 14. As described above, the case 16 may be attached, and the cover 22 may be attached from the blade portion 11 side.

The key material of this invention is shown, (A) is a disassembled perspective view, (B) is a perspective view of an assembly state. A case is shown, (A) is a top view, (B) is sectional drawing. It is a front view of a key material. It is a top view of a key material. (A) is a left side view of the key material, and (B) is a right side view of the key material. (A) is the sectional view on the AA line of FIG. 3, (B) is the sectional view on the BB line of FIG. It is a front view which shows the modification of a key material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Key plate 11 ... Blade part 12 ... Key code 13 ... Head part 14 ... Case accommodating part 14a ... Opening part 15 ... Key ring insertion hole 16 ... Case 17 ... Accommodating recessed part 18 ... Rib 19 ... Protruding part 19a ... Contact surface 19b ... opposing surface 19c ... surface 20 ... notch 21 ... chamfer 22 ... cover 22a ... facing edge 23 ... insertion hole 24 ... notch 25 ... engagement claw 26 ... IC tag

Claims (4)

A case that accommodates an electronic component, a blade portion that forms a preset key code, a key plate that has a head portion that forms a case housing portion that accommodates the case, and a cover that covers the head portion and the case. In the key material
The cover has an annular shape in which an insertion hole is formed so that the head portion of the key plate is located inside.
A key member, wherein the case is provided with a protrusion that abuts a leading edge of the cover in the insertion direction of the cover with respect to the key plate to restrict movement of the cover in the insertion direction. The key plate case housing part is constituted by a notch with one side edge of the head part opened,
2. The key material according to claim 1, wherein a pair of the projecting portions are provided so as to face both surfaces of the case, and an edge of the notch portion is sandwiched between the projecting portions.   The key material according to claim 2, wherein an engagement claw portion that engages with a rear edge of the cover in the insertion direction of the cutout portion is provided on an inner surface of the insertion hole of the cover.   The protruding portion of the case is configured to be exposed to the outside from the cover, and the protruding portion is also used as an identification unit for identifying a difference in transmission code of an electronic component accommodated in the case. The key material according to any one of claims 1 to 3.

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