JP5260420B2 - Electric lock antenna - Google Patents

Description

  The present invention relates to an electric lock antenna suitable for use in human body communication.

  “Human body communication” is known in which electrical signals are transmitted and received through the surface of the human body. Signal transmission systems in human body communication are broadly divided into electric field systems and current systems. Compared to the latter current system, in which a weak current is passed directly to the human body, the former electric field system that does not require contact between the electrode and the human body is used. It has attracted attention in recent years. In the electric field system, a signal is superimposed on the fluctuation of the electric field generated by transmission on the transmitter side, and the change in the electric field is detected by the receiver. That is, by generating an electric field in the vicinity of the human body, the human body, which is a dielectric, is dielectrically polarized, and the entire human body is covered with the electric field. The transceiver and the human body do not need to be in direct contact with each other. For example, if a mobile phone or the like as a transmitter is placed in a pocket of clothes, an electric field can be generated and signals can be transmitted and received.

  Examples of the human body communication include an electric field communication device disclosed in Patent Document 1, a door control system disclosed in Patent Document 2, and a housing structure disclosed in Patent Document 3. For example, in the door control system of Patent Document 2, the first electrode of the transmission device that transmits a signal for locking the door and the second electrode of the reception device are placed on the floor on one side of the door and the handle portion of the door. Install. In this example, the transmission device is not carried by the user and is installed on the floor on one side of the door. By forming a transmission path between the transmitting device and the receiving device when the user touches the first electrode and the second electrode, the user does not need to hold the IC card and touches the door. The door lock can be released.

JP 2008-236560 A JP 2007-182733 A JP 2009-17466 A

  However, conventionally, there has been no electric lock for human body communication that has been considered for actual operation. For this reason, there were many problems as follows. That is, the normal door knob is electrically short-circuited with the door (generally in a grounded state) and cannot be used as an antenna. Since the door knob is movable during the turning operation, there is a risk of disconnection if the cable is connected. To prevent disconnection, it is conceivable to form a circuit with a point / surface contact, for example, a sliding contact such as a conductive brush. However, the contact resistance may adversely affect communication. It was difficult to secure a new space with a built-in antenna in the lock box. In addition to securing a movable structure using an operation member such as a knob, it was necessary to ensure both an antenna area and a design to stabilize communication. The indoor / outdoor operation could not be identified. In order to obtain good communication performance, if many antennas are provided, the size of the antenna increases, and there is a movable part that rotates a knob or the like. Therefore, it is particularly difficult to retrofit both inside and outside the existing room.

  The present invention has been made in view of the above circumstances, and its purpose is a compact that can stabilize communication by securing a large antenna area while allowing operation members to move without causing disconnection or contact resistance. An object of the present invention is to provide an electric lock antenna so that an electric lock for human body communication can be easily realized only by addition to a conventional electric lock.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The electric lock antenna according to claim 1 of the present invention includes an insulating base 15 fixed to the door surface 11a,
A conductive shaft 17 rotatably supported by the insulating base 15 and protruding from the door surface 11a;
An operation member 19 fixed and electrically connected to the tip of the conductive shaft 17;
A plurality of parallel insulating plates 21 disposed between the insulating base 15 and the operating member 19 through the conductive shaft 17;
A plurality of metal plates 23 disposed respectively between the insulating plates 21;
With
In the plurality of metal plates 23, only the first metal plate 23a installed on the opposite side of the operation member 19 across the outermost insulating plate 21a is fixed to the conductive shaft 17 so as not to be relatively rotatable and electrically. It is characterized by being connected to.

  In this electric lock antenna, the operation member 19 is insulated from the door 11 and can be used as an antenna. With a compact structure, a large antenna area is ensured while making the operation member movable without causing disconnection or contact resistance.

The electric lock antenna according to claim 2 is the electric lock antenna according to claim 1,
A positive electrode 61 is formed on the second metal plate 23b disposed on the opposite side of the first metal plate 23a with the insulating plate 21 in between.
A negative electrode 63 is formed on the third metal plate 23c disposed opposite to the second metal plate 23b with the insulating plate 21c interposed between the second metal plate 23b and the insulating base 15.
The fourth metal plate 23d is disposed opposite to the third metal plate 23c with the insulating plate 21d interposed between the third metal plate 23c and the insulating base 15.

  In this electric lock antenna, a capacitor (capacitor) for storing electric charges (electric energy) is formed by the metal plate 23 facing each other with a gap corresponding to the insulating plate 21 as a gap, and the antenna is formed by the first metal plate 23a and the second metal plate 23b. The capacitor on the side, the third metal plate 23c and the fourth metal plate 23d form a ground side capacitor, and in particular, the first metal plate 23a electrically connected to the operation member 19 touched by the person has an insulating arrangement structure. Is done.

The electric lock antenna according to claim 3 is the electric lock antenna according to claim 1 or 2,
A metal case 51 that penetrates the conductive shaft 17 and covers the metal plate 23 and the insulating plate 21 is insulated from the conductive shaft 17 and the metal plate 23 and fixed to the insulating base 15. To do.

  If the structure of the electric lock antenna is such that the case is grounded, the coupling between the signal electrode and the case is large, so that the signal reaching the receiving circuit is reduced and the performance deteriorates. In the electric lock antenna 3, the door serving as the ground is insulated from the conductive shaft 17 and the metal plate 23 through the insulating base 15, that is, the metal case 51 is separated from the ground. Therefore, the performance is not deteriorated.

The electric lock antenna according to claim 4 is the electric lock antenna according to any one of claims 1, 2, and 3,
A base end of the conductive shaft 17 is connected to a locking / unlocking mechanism portion in the lock box 13 via an insulating member 49,
The locking / unlocking mechanism unit operates the latch bolt in the unlocking direction in response to the input of the rotating operation force by the conductive shaft 17.

  In this electric lock antenna, the door 11 can be manually unlocked by a latch bolt separately from the locking / unlocking control system by moving the dead bolt forward and backward provided in the electric lock 41. Further, the conductive member 17 and the operation member 19 are electrically insulated from the locking / unlocking mechanism part side by the insulating member 49, and are mechanically linked.

The electric lock antenna according to claim 5 is the electric lock antenna according to any one of claims 1, 2, 3, and 4,
A micro switch 77 for detecting the rotation of the conductive shaft 17 is provided.

  In this electric lock antenna, the electric lock antenna 100 is provided on the front and back sides of the door 11, and the rotation of the conductive shaft 17 is detected by the microswitch 77, whereby the operation of the operation member 19 inside and outside the door can be identified.

The electric lock antenna according to claim 6 is the electric lock antenna according to any one of claims 1, 2, 3, 4, and 5,
The metal plate 23 is formed in a substantially rhombus shape whose corners are chamfered, and the conductive shaft 17 is penetrated in the center.

  In this electric lock antenna, when the surface shape of the metal case 51 is a quadrangle, the shape of the metal plate that can be accommodated in the maximum area is the same quadrangle, and the four-corner triangular portions of the quadrangle are cut off to form a substantially rhombus. One metal plate 23 a is formed in a large area that can rotate forward and backward in the metal case 51.

The electric lock antenna according to claim 7, the insulating base 15 fixed to the door surface,
An operation member 19 supported by the insulating base 15 and protruding from the door surface 11a;
A plurality of parallel insulating plates 21 disposed between the insulating base 15 and the operating member 19;
A plurality of metal plates 23 disposed respectively between the insulating plates 21;
With
In the plurality of metal plates 23, only the first metal plate 23a installed on the opposite side of the operation member 19 with the outermost insulating plate 21a interposed therebetween is fixed to the operation member 19 and electrically connected thereto. It is characterized by that.

  In this electric lock antenna, the operation member 19 is insulated from the door 11 by the insulating base 15 and can be used as an antenna by the plurality of insulating plates 21 and the metal plate 23.

The electric lock antenna according to claim 8, the insulating base 15 fixed to the door surface,
An operation member 19 supported by the insulating base 15 and having an insulated surface protruding from the door surface 11a;
A parallel insulating plate 21 disposed between the insulating base 15 and the operation member 19;
A plurality of metal plates 23 arranged in parallel on both sides of the insulating plate 21;
In the plurality of metal plates 23, only the first metal plate 23a installed on the opposite side of the operation member 19 with the outermost insulating plate 21a interposed therebetween is fixed to the operation member 19 and electrically connected thereto. It is characterized by that.

  In this electric lock antenna, the operation member 19 is insulated from the door 11 by the insulating base 15, can be used as an antenna by the plurality of insulating plates 21 and the metal plate 23, and the surface of the operation member 19 is insulated. By doing so, circuit damage due to static electricity can be prevented, and electric shock accidents can be prevented.

  According to the electric lock antenna of the first aspect of the present invention, the metal plate is disposed between each of the insulating plates on the conductive shaft fixed to the operation base and rotatably supported by the insulating base. Since only the first metal plate installed on the opposite side of the operating member across the insulating plate is fixed to the conductive shaft and electrically connected, the operating member is insulated from the door and used as an antenna In addition, with a compact structure, it is possible to stabilize communication by securing a large antenna area while making the operation member movable without causing disconnection or contact resistance. As a result, an electric lock for human body communication can be easily realized only by adding to the conventional electric lock.

  According to the electric lock antenna of claim 2, there is a possibility that the circuit may be damaged by static electricity when the surface of the electrode connected to the circuit is directly touched, or a high voltage is applied to the electrode due to the contact between the electrode wiring and the AC line. If a positive electrode is formed on the second metal plate on the opposite side of the first metal plate with the insulating plate sandwiched between the second metal plate and the second metal plate on the opposite side of the first metal plate A negative electrode is formed on the third metal plate, and the fourth metal plate is disposed opposite to the third metal plate with the insulating plate interposed therebetween, so that the second metal plate, which is an electrode (plus electrode) connected to the circuit, is used. The first metal is not configured to be directly touched by a person, that is, configured to touch the operation member connected to the first metal plate as a configuration in which an insulating plate is interposed with respect to the electrode, that is, the first metal that is AC-coupled to the second metal plate. By providing a plate as an auxiliary electrode So that the above problems can be solved.

  According to the electric lock antenna of the third aspect, the metal case penetrating the conductive shaft and covering the metal plate and the insulating plate is insulated from the conductive shaft and the metal plate and fixed to the insulating base. Problems such as a decrease in the arrival signal to the receiving circuit due to grounding and increased coupling with the signal electrode do not occur, and performance is not deteriorated.

  According to the electric lock antenna of the fourth aspect, the base end of the conductive shaft is connected to the locking / unlocking mechanism portion via the insulating member, and the locking / unlocking mechanism portion receives the latch bolt by the input of the rotational operation force by the conductive shaft. Since it is operated in the unlocking direction, it is possible to release the closing of the door by the latch bolt separately from the locking and unlocking in which the dead bolt is reversely unlocked by the electric lock. Further, the conductive shaft and the operation member are electrically insulated from the locking / unlocking mechanism portion side by the insulating member, and are mechanically linked.

  According to the electric lock antenna of the fifth aspect, since the micro switch for detecting the rotation of the conductive shaft is provided, if the electric lock antenna is provided on the front and back sides of the door, the rotation of the conductive shaft that rotates integrally with the operation member. Can be used to identify indoor / outdoor operations.

  According to the electric lock antenna of the sixth aspect, the metal plate is formed in a substantially rhombus shape whose corners are chamfered, and the conductive shaft passes through the center, so that the surface area of the limited metal case is limited. A large area of the movable first metal plate can be secured.

  According to the electric lock antenna of claim 7, the operation member is insulated from the door by the insulating base, and can be used as an antenna by a plurality of insulating plates and a metal plate, and the first metal plate and the operation member Are configured to be electrically connected to each other and do not directly touch the circuit.

  According to the electric lock antenna of claim 8, the operation member is insulated from the door by the insulating base, and can be used as an antenna by a plurality of insulating plates and a metal plate, and the surface of the operation member is insulated. This prevents direct electrical contact with the metal plate, prevents circuit damage due to static electricity, and prevents an electric shock accident.

It is a principal part plane sectional view of a door provided with the electric lock antenna concerning the present invention in the front and back. It is a conceptual diagram showing the schematic structure of the human body communication system provided with the electric lock antenna of FIG. It is a sectional side view of the electric lock antenna shown in FIG. It is a disassembled perspective view of an electric lock antenna. It is the disassembled perspective view which looked at the 1st metal plate of FIG. 4 from the other side. It is a front view showing the movable condition of a 1st metal plate. It is a rear view of the insulation base to which the microswitch was attached. It is a schematic side view which shows other embodiment of the electric lock antenna which concerns on this invention. It is a schematic side view which shows other embodiment of the electric lock antenna which concerns on this invention. It is a schematic front view which shows other embodiment of the electric lock antenna which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional plan view of an essential part of a door provided with front and back electric lock antennas according to the present invention.
The electric lock antenna 100 according to the present embodiment can be provided on the front and back surfaces 11a and 11b of the door 11, respectively. Hereinafter, the electric lock antenna 100 provided on the surface (referred to as “door surface”) 11a of the door 11 will be mainly described. In addition, an electric lock box 13 is built in the small mouth side of the door 11, and the lock box 13 can be moved forward and backward by a dead bolt (not shown) and a latch bolt (not shown) by a locking / unlocking mechanism (not shown). Yes.

  The electric lock antenna 100 includes an insulating base 15, a conductive shaft 17, a lever 19 that is an operation member, a plurality of insulating plates 21, and a plurality of metal plates 23 as main components. The electric lock antennas 100 and 100 on the door front and back surfaces 11a and 11b are, for example, the electric lock antenna 100 on the front surface 11a side, and a fixed pillar 25 fixed at the base end through the fixing screw 27 is penetrated through the door 11, and the tip thereof The fixing screw 27 inserted through the electric lock antenna 100 on the back surface 11 b side is screwed into the female screw opened at the side, and is attached with the door 11 interposed therebetween. The electric lock antennas 100 and 100 are electrically insulated from each other and from the door 11 by fixing the fixing column 25 to the insulating base 15.

FIG. 2 is a conceptual diagram showing a schematic configuration of a human body communication system provided with the electric lock antenna of FIG.
Here, a system example of locking / unlocking control by human body communication using the electric lock antenna 100 will be described. For example, the user puts a mobile phone 29 as a transmitter in a pocket or the like. The door 11 is provided with an electric lock 41 and an electric lock antenna 100, and the electric lock antenna 100 is connected to a receiving device 35 including a receiver 31 and a control device 33 by an electric wire 37. The control device 33 is connected to the electric lock 41 by an electric wire 39. The door 11 is an entrance door. For example, when the door 11 is configured as a ground, the door 11 is made of metal, and when the door 11 is not grounded, the door 11 is a non-conductive wooden door. Become.

  The cellular phone 29 is a device that transmits an unlock signal for unlocking the electric lock 41 by electric field communication, and transmits the unlock signal generated in the generator superimposed on the induced electric field. The electric field induced through the user as the electric field transmission medium is received by the electric lock antenna 100, converted into an electric signal by the receiver 31, and input to the control device 33 as a lock release signal. The control device 33 to which the lock release signal is input sends an unlock signal to the electric lock 41 so that the dead bolt is retracted by the lock / unlock mechanism part of the lock box 13 and the electric lock 41 is released. It becomes.

  In such a locking / unlocking control system, the electric lock antenna 100 functions as an antenna that detects fluctuations in the electric field generated by the transmission of the mobile phone 29. The insulating base 15 is made of resin, for example, and insulates the electric lock antenna 100 from the door 11. The conductive shaft 17 is rotatably supported by the insulating base 15 via a bearing portion 45 and protrudes perpendicularly to the door surface 11a. The conductive shaft 17 is biased by a release spring 46 (see FIG. 1) so as to be in a horizontal position when not being operated. The lever 19 is made of, for example, aluminum, and is fixed to the tip of the conductive shaft 17 by a fixing screw 47 to prevent it from coming off. That is, the conductive shaft 17 and the lever 19 are electrically connected.

  The proximal end of the conductive shaft 17 is connected to a locking / unlocking mechanism portion in the lock box 13 via an insulating member 49. When the turning operation force by the lever 19 is input through the conductive shaft 17, the locking / unlocking mechanism unit operates the latch bolt in the locking release direction. Thereby, separately from the locking / unlocking control system by advancing and retreating the dead bolt provided in the electric lock 41, the door 11 can be manually released from being closed by the latch bolt. The insulating member 49 electrically insulates the conductive shaft 17 and the operation member 19 from the locking / unlocking mechanism portion side, and is mechanically linked.

3 is a side sectional view of the electric lock antenna shown in FIG.
The insulating plate 21 includes a plurality (five) of insulating plates 21a, 21b, 21c, 21d, and 21e arranged in parallel along the door surface from the lever 19 side. The insulating plate 21 and the insulating base 15 are made of polyacetal resin. It has strength, elasticity, heat resistance and cold resistance. The insulating plates 21 a, 21 b, 21 c, 21 d, and 21 e are disposed between the lever 19 and the insulating base 15 through the conductive shaft 17. Metal plates 23a, 23b, 23c, and 23d are disposed between the insulating plates 21a, 21b, 21c, 21d, and 21e, respectively. In the plurality of metal plates 23a, 23b, 23c, and 23d, only the first metal plate 23a installed on the opposite side of the lever 19 across the outermost insulating plate 21a is fixed to the conductive shaft 17 so as not to be relatively rotatable and electrically Connected.

  A metal case 51 is attached to the insulating base 15. The metal case 51 passes through the conductive shaft 17 and covers the metal plate 23 and the insulating plate 21. The metal plate 23 is insulated from the conductive shaft 17 and the metal plate 23 and is fixed to the insulating base 15. Specifically, the upper locking claw is locked to the locking portion of the insulating base 15, and the lower surface is screwed to the insulating base 15 with a screw 53. If the outer case that becomes an escation is grounded as the structure of the electric lock antenna, the coupling between the signal electrode and the case will increase, and the signal that reaches the receiving circuit will decrease, resulting in poor performance. However, in the electric lock antenna of the present embodiment, when the door 11 is grounded, the door 11 is insulated from the conductive shaft 17 and the metal plate 23 through the insulating base 15. That is, since the metal case 51 is separated from the ground, the performance as a receiving circuit is not deteriorated. In the figure, 55 denotes a cylinder lock when a manual locking mechanism is added, 57 denotes an operation confirmation LED, and 59 denotes an insulating collar. Reference numeral 77 denotes a microswitch described later.

FIG. 4 is an exploded perspective view of the electric lock antenna.
A pair of positive electrodes 61, 61 are formed on the second metal plate 23b disposed on the opposite side of the first metal plate 23a with the insulating plate 21b interposed therebetween. A pair of negative electrodes 63, 63 are formed on the third metal plate 23c disposed opposite to the second metal plate 23b with the resin plate 21c interposed between the second metal plate 23b and the insulating base 15. The fourth metal plate 23d is disposed opposite to the third metal plate 23c with the resin plate 21d interposed between the third metal plate 23c and the insulating base 15. That is, since the electric lock antenna 100 is insulated from the door 11 and does not generate disconnection or contact resistance, a capacitor is formed with a four-layer structure of the metal plate 23 using the characteristics of the AC signal.

  The insulating plates 21a, 21b, 21c, 21d, and 21e are formed with loose fitting holes 65 through which the conductive shaft 17 is inserted with a gap. Similarly, loose fitting holes 67 are formed in the metal plates 23b, 23c, and 23d to allow the conductive shaft 17 to be inserted with a gap. On the other hand, the first metal plate 23a is integrally formed with a bearing 71 having a square hole 69 through which the conductive shaft 17 is inserted so as not to be relatively rotatable. In the figure, reference numeral 73 denotes a fixing screw for fixing the insulating plates 21a, 21b, 21c, 21d, 21e to the insulating base 15.

FIG. 5 is an exploded perspective view of the first metal plate of FIG. 4 viewed from the opposite side. In this figure, the insulating plates 21b, 21c, 21d, and 21e are omitted.
The conductive shaft 17 penetrating the metal plates 23d, 23c, and 23b is inserted into the bearing 71 of the first metal plate 23a so as not to be relatively rotatable, and then inserted into the fixing hole 19a of the lever 19. On the back surface of the insulating plate 21a, a recess 75 is formed that rotatably accommodates the first metal plate 23a that rotates together with the conductive shaft 17. In the figure, 76 is a hole used when fastening the fixing screw 27 shown in FIG. 1, and 78 is a contact surface of the lever 19 that is electrically connected to the bearing 71.

FIG. 6 is a front view showing a movable state of the first metal plate.
The metal plates 23a, 23b, 23c, and 23d are formed in a substantially rhombus shape in which each corner portion is chamfered or a leaf shape of a tree, and the conductive shaft 17 passes through the center. When the surface shape of the metal case 51 is a vertically long rectangle as in this embodiment, the shapes of the metal plates 23a, 23b, 23c, and 23d that can be accommodated in the maximum area are the same rectangle. The metal plates 23a, 23b, 23c, and 23d are formed in a substantially long rhombus shape by cutting out the four corners of the square. Thereby, the 1st metal plate 23a is formed in the large area which can rotate forward / reversely in the metal case 51. FIG. That is, it is possible to secure a large area of the movable first metal plate 23 a within the limited surface area of the metal case 51. In the drawing, the position of the first metal plate 23a represented by a solid line indicates the position during transmission / reception after the lever 19 is rotated and the position of the first metal plate 23a represented by a two-dot chain line.

FIG. 7 is a rear view of the insulating base to which the microswitch is attached.
A micro switch 77 is provided on the back surface of the insulating base 15, and the micro switch 77 has a detection piece 79 on the surface facing the conductive shaft 17. A detection cam plate 81 is fixed to the outer periphery of the conductive shaft 17 protruding from the insulating base 15 toward the lock box 13, and a recess 83 is formed on the outer periphery of the detection cam plate 81. A pressing pin 87 urged by a urging spring 85 is brought into contact with the recess 83, and when the conductive shaft 17 is rotated, the pressing pin 87 is pressed by the detection cam plate 81 to operate the detection piece 79.

  A terminal of the micro switch 77 is connected to the control device 33. By providing the micro switch 77, the rotation of the conductive shaft 17 is detected, and the operation of the lever 19 inside and outside the door can be identified. In the figure, 89 denotes a speaker, and 91 denotes a lead wire for connecting the terminal of the micro switch 77 and the control device 33.

Next, the operation of the electric lock antenna 100 having the above configuration will be described.
When the user touches the lever 19 with the cellular phone 29 in the pocket, the electric field induced through the user as an electric field transmission medium is received by the electric lock antenna 100. The electric field determines the ID of the mobile phone 29 owned by the user in the receiver 31 at the moment when the user touches the lever 19, that is, before the lever 19 is operated (before the lever 19 is rotated). If the ID is correct, it is input to the control device 33 as a lock release signal.

  After the unlock signal is input to the control device 33, the conductive shaft 17 and the first metal plate 23a are rotated via the lever 19. At this time, the first metal plate 23a is displaced with respect to the other metal plates 23b, 23c, and 23d. However, since the lock release signal has already been generated, the change in the capacitance does not cause a problem. Hereinafter, as described above, the control device 33 to which the unlocking signal is input sends an unlocking signal to the electric lock 41, and the dead bolt is retracted by the locking / unlocking mechanism portion of the lock box 13, so that the electric lock 41. Is released. The door 11 is opened when the latch bolt moves backward by a lever operation of the user.

  Thus, in the electric lock antenna 100, the lever 19 is insulated from the door 11 and can be used as an antenna. With a compact structure, a large antenna area is secured while the lever 19 can be moved without causing disconnection or contact resistance.

  Therefore, according to the electric lock antenna 100 having the above-described configuration, the metal plate 23 is provided between the insulating plates 21 on the conductive shaft 17 fixed to the lever 19 and rotatably supported on the insulating base 15. Since only the first metal plate 23a placed on the opposite side of the lever 19 with the insulating plate 21 interposed therebetween is fixed to the conductive shaft 17 and electrically connected, the lever 19 is insulated from the door 11 Thus, the antenna can be used as an antenna, and the communication can be stabilized by securing a large antenna area in the case 51 while allowing the lever 19 to move without causing disconnection or contact resistance with a compact structure. As a result, an electric lock for human body communication can be easily realized only by adding to the conventional electric lock 41.

  Further, since the first metal plate 23a that rotates together with the lever 19 can be connected to the circuit regardless of cable connection or point / surface contact, the contact resistance does not adversely affect communication. Further, since the capacitor is formed by stacking thin aluminum plates, it is possible to secure the movable structure by the lever 19 and secure the antenna area and stabilize the design for stabilizing the communication.

  In addition to the above embodiment, as shown in FIG. 8, an insulator 22 is coated on the surface of the lever 19 as an operation member so as not to be in direct electrical contact with the metal plate 23. It is good also as a structure. For example, the lever 19 can be coated and coated with a resin material. By adopting such a configuration, the feel when the lever 19 is held (gripped) can be configured from a cold and hard material to a soft feel. it can. Further, as shown in FIG. 8, as a configuration in the case 51, two metal plates 23 may be configured, and the door 11 may be configured as a ground. That is, when the two metal plates 23 are configured, the lever 19 is electrically connected to the outermost first metal plate 23a connected to the plus electrode from the transmission / reception circuit. In order to insulate it from the surface, an insulator 22 is used.

  Moreover, as shown in FIG. 9, you may comprise the door 11 as a ground. In this case, the third metal plate 23c having the negative electrode 63 and the fourth metal plate 23d on the ground side provided via the insulating plate 21d in the above embodiment can be omitted.

  Furthermore, in the above embodiment, the case where the operation member is the lever 19 has been described as an example. However, the operation member may be a knob, a vertically long bar of a push-pull lock as shown in FIG. May be. In the case of a configuration such as a vertically long bar as shown in FIG. 10, the insulating plate 21 and the metal plate 23 can be arranged inside the door surface 11a so that the area can be set large. In such a configuration, similarly to the above, the material of the vertically long bar 19 may be a metal material, and the surface may be coated with an insulator such as a resin.

  In addition, when the door 11 is configured as a ground, it is a conductive metal door, for example. However, when the ground is not configured as a non-conductive material such as a wooden material, the above embodiment is used. A ground electrode is provided on the fourth metal plate 23d having the configuration, and wiring is performed outside the case.

11a ... Door surface 13 ... Lock box 15 ... Insulation base 17 ... Conductive shaft 19 ... Operation member (lever)
21 ... Insulating plate 21a ... Outermost insulating plate 23 ... Metal plate 23a ... First metal plate 23b ... Second metal plate 23c ... Third metal plate 23d ... Fourth metal plate 41 ... Electric lock 49 ... Insulating member 51 ... Metal Case 61 ... Antenna terminal 63 ... Earth terminal 77 ... Micro switch 100 ... Electric lock antenna

Claims (8)

An insulating base fixed to the door surface;
A conductive shaft that is rotatably supported by the insulating base and protrudes from the door surface;
An operation member fixed and electrically connected to the tip of the conductive shaft;
A plurality of parallel insulating plates disposed between the insulating base and the operation member through the conductive shaft;
A plurality of metal plates respectively disposed between the insulating plates;
With
In the plurality of metal plates, only the first metal plate installed on the opposite side of the operation member across the outermost insulating plate is fixed and electrically connected to the conductive shaft so as not to be relatively rotatable. An electric lock antenna. The electric lock antenna according to claim 1,
A positive electrode is formed on the second metal plate disposed on the opposite side of the first metal plate with the insulating plate interposed therebetween,
A negative electrode is formed on a third metal plate disposed opposite to the second metal plate with the insulating plate sandwiched between the second metal plate and the insulating base;
An electric lock antenna, wherein a fourth metal plate is disposed opposite to the third metal plate with an insulating plate interposed between the third metal plate and the insulating base. The electric lock antenna according to claim 1 or 2,
An electric lock antenna, wherein a metal case penetrating the conductive shaft and covering the metal plate and the insulating plate is insulated from the conductive shaft and the metal plate and fixed to the insulating base. The electric lock antenna according to any one of claims 1, 2, and 3,
The base end of the conductive shaft is connected to the locking / unlocking mechanism in the lock box via an insulating member,
The electric lock antenna according to claim 1, wherein the locking / unlocking mechanism unit operates the latch bolt in the unlocking direction in response to an input of a rotating operation force by the conductive shaft. The electric lock antenna according to any one of claims 1, 2, 3, and 4,
An electric lock antenna comprising a micro switch for detecting rotation of the conductive shaft. The electric lock antenna according to any one of claims 1, 2, 3, 4, and 5,
The metal plate is formed in a substantially rhombus shape whose corners are chamfered, and the conductive shaft is penetrated in the center. An insulating base fixed to the door surface;
An operation member supported by the insulating base and protruding from the door surface;
A plurality of parallel insulating plates disposed between the insulating base and the operating member;
A plurality of metal plates respectively disposed between the insulating plates;
With
The plurality of metal plates are characterized in that only the first metal plate installed on the opposite side of the operation member across the outermost insulating plate is fixed and electrically connected to the operation member. Electric lock antenna. An insulating base fixed to the door surface;
An operation member supported by the insulating base and having an insulated surface protruding from the door surface;
A parallel insulating plate disposed between the insulating base and the operating member;
A plurality of metal plates arranged in parallel on both sides of the insulating plate,
The plurality of metal plates are characterized in that only the first metal plate installed on the opposite side of the operation member across the outermost insulating plate is fixed and electrically connected to the operation member. Electric lock antenna.

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