JP4301303B2 - Electronic key system portable machine - Google Patents

Description

  The present invention relates to a portable device of an electronic key system.

  2. Description of the Related Art Conventionally, there are electronic key systems that perform operations such as locking / unlocking doors of vehicles and the like using electronic keys. In this electronic key system, when a user carries a portable device as an electronic key, for example, it can be unlocked / locked automatically when approaching the vehicle or away from the vehicle, or stored in the portable device when getting on the vehicle. The ignition can be turned on based on the comparison between the ID code stored in the vehicle and the ID code stored in the vehicle. A case of a portable device as an electronic key used in such an electronic key system is proposed in Patent Document 1, for example.

  Specifically, in Patent Document 1, a housing portion having a space inside and an opening portion is provided, and the opening portion is covered by being inserted into the opening portion of the housing portion, so that the space in the housing portion is reduced. There has been proposed a waterproof case for a small electrical device that includes a lid portion for sealing and in which a circuit board is accommodated in an internal space of a housing portion.

The housing part is configured, for example, by attaching an upper cover and a lower cover together. The lid portion includes a battery holder, and a battery serving as a power source for the circuit board is held in the battery holder. Then, the battery holder is inserted into the housing portion from the opening of the housing portion, so that the battery holder is disposed in the gap between the circuit board and the housing portion in the housing portion, and the lid The casing is sealed by fitting the part into the opening of the casing.
JP 2005-19603 A

  However, in the above conventional technology, the lid is removed from the casing when the battery is replaced, so that the battery can be easily replaced. However, since the casing can be easily disassembled, The circuit board from which the element is exposed can be easily removed from the casing.

  As a result, the user can easily touch the circuit element, and the user may inadvertently destroy the circuit element by touching the circuit element, or the user may intentionally modify the circuit. End up. In particular, when a circuit is intentionally modified, it may be used for other purposes such as transmitting radio waves, or may be used for ID code verification in other vehicles.

  For portable devices in which the design case is configured by bonding the upper and lower covers together, the battery is removed from the interior of the design case by disassembling the upper and lower covers when replacing the battery. Will be. In this case, since the chance of the user touching the circuit board increases, it is particularly desirable to protect the circuit elements that may be touched by the user.

  In view of the above points, the present invention provides a portable device of an electronic key system that has a structure that allows battery replacement, and that can prevent a user from easily touching a circuit element or modifying a circuit by a user. The purpose is to provide.

  In order to achieve the above object, according to the first feature of the present invention, the protective cover (60) includes a plate-like plane portion (61) and a rod-like support portion (62), and includes a plurality of support portions. (62) is provided on the flat surface portion (61) so as to protrude from the surface of the flat surface portion (61) facing the circuit board (70) to the circuit board (70) side. When the protective cover (60) is overlaid on the one surface side, the plurality of support portions (62) are inserted into the circuit board (70) at positions facing the plurality of support portions (62) of the protective cover (60). When the battery holder (80) is superimposed on the circuit board (70) together with the protective cover (60), the protective cover (60) of the battery holder (80) is provided. The plurality of support portions (62) of the The holding part (62) has a plurality of through holes (84) into which the holding part (62) is inserted, and a plurality of support parts (62) of the protective cover (60) are provided in each through part (73) of the circuit board (70). And is inserted into each hole (84) of the battery holder (80) so that the circuit board (70) is sandwiched between the protective cover (60) and the battery holder (80). At least the tips of the support portions (62) protruding from the holes (84) of the battery holder (80) are heated and melted, so that the tips of the support portions (62) are joined to the battery holder (80). The protective cover (60), the circuit board (70), and the battery holder (80) are integrated.

  As a result, both sides of the circuit board (70) are covered with the protective cover (60) and the battery holder (80), and both are joined, so that the user can connect the circuit board (70). It is possible to prevent the element (72) from being easily touched. Along with this, it is possible to prevent the element (72) from being carelessly destroyed by touching the element (72). Thus, since the user cannot easily touch the circuit board (70), it is possible to prevent the user from intentionally modifying the circuit of the circuit board (70). Since the battery (95) is only held by the battery holder (80), the user can replace the battery without touching the circuit board (70).

  In this case, in the protective cover (60), each support portion (62) is provided on the side surface of the plane portion (61), and each penetration portion (73) and each hole portion (84) into which each support portion (62) is inserted are provided. The circuit board (70) and the battery holder (80) can be provided on the outer edge portions, respectively.

  Thereby, the circuit board (70) can be enclosed by each support part (62), and the movement of the circuit board (70) can be restricted. Therefore, it is possible to prevent the circuit board (70) from being easily removed from between the protective cover (60) and the battery holder (80).

  Moreover, the front-end | tip of each support part (62) of a protective cover (60) can be heat-sucked to a battery holder (80), respectively. According to this method, the tip of each support portion (62) can be easily joined to the battery holder (80).

  Further, the tip of each support portion (62) protruding from each hole (84) of the battery holder (80) is heated and melted, and the portion where each support portion (62) protrudes in each hole (84) The tip of each support portion (62) can be joined to the battery holder (80) by heating and melting. Thereby, a protective cover (60) and a battery holder (80) can be joined more firmly.

  In the second feature of the present invention, the circuit board (70) has a plurality of support portions (62) of the protective cover (60) of the circuit board (70) when the protective cover (60) is superimposed on one surface side. ) In the place opposite to the first through portion (73) through which the plurality of support portions (62) are inserted, and the plurality of support portions (62) of the protective cover (60) are connected to the circuit board ( 70), the protective cover (60) and the circuit board (70) are overlapped with each other, and at least each first of the circuit board (70). The tip of each support portion (62) protruding from the through portion (73) is heated and melted, whereby the tip of each support portion (62) is joined to the circuit board (70), and the protective cover (60) and the circuit are connected. The substrate (70) is integrated.

  Thus, since the user cannot touch the circuit element on one side of the circuit board (70) unless the user destroys the protective cover (60), the user can be prevented from touching the circuit element easily. It is possible to prevent the element from being destroyed. Along with this, circuit modification can also be prevented.

  In this case, when the battery holder (80) is superimposed on the other surface side of the circuit board (70), the surface of the battery holder (80) facing the circuit board (70) is moved to the circuit board (70) side. The circuit board (70) includes a plurality of claw portions (85) projecting, and the circuit board (70) has each claw of the battery holder (80) when the battery holder (80) is superimposed on the other surface side of the circuit board (70). Each of the claws of the battery holder (80) when the battery holder (80) is superimposed on the other surface side of the circuit board (70). The portion (85) is elastically deformed and passes through each second through portion (74) and is caught on one surface side of the circuit board (70), so that the battery holder (80) and the circuit board (70) are integrated. An assembly structure can be adopted.

  Thereby, a protective cover (60), a circuit board (70), and a battery holder (80) can be comprised as one package.

  In addition, the tip of each support portion (62) of the protective cover (60) can be heat staked to the circuit board (70), respectively. Thereby, the front-end | tip of each support part (62) can be joined to a circuit board (80) easily.

  A switch (71) is installed on one side of the circuit board (70) facing the protective cover (60), and the flat part (61) of the protective cover (60) faces the switch (71). When the window part (63) is provided on the circuit board (70) and the flat part (61) of the protective cover (60) is overlaid on the one surface side, the switch (71) is inserted into the window part (63). The switch (71) can be protruded from the protective cover (60).

  Thereby, a protective cover (60) can be made into the form arrange | positioned in the space except a switch (71) among the one surface sides of a circuit board (70). That is, the protective cover (60) can be disposed on the one surface side of the circuit board (70) without specially providing a space for providing the protective cover (60).

  For example, the battery holder (80) has a recess (81) on the side facing the other surface side of the circuit board (70), and the recess is formed when the battery holder (80) is overlaid on the circuit board (70). The element (72) mounted on the other surface side of the circuit board (70) can be accommodated in (81).

  Thereby, the element (72) mounted on the circuit board (70) can be covered and the user can be prevented from touching the element (72) of the circuit board (70) easily.

  And the projection part (21) which fixes the position of a battery holder (80) can also be provided in the position where a battery holder (80) is arrange | positioned at least among cases (10, 20). Thereby, the battery holder (80) can be easily positioned with respect to the case (10, 20), and the positional deviation between the case (10, 20) and the battery holder (80) after the battery holder (80) is assembled. Can be prevented.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In this embodiment, a smart key system (registered trademark) is taken as an example of an electronic key system, and a case where the present invention is applied to a smart key used as a portable device of the smart key system will be described.

  Note that the smart key system is a system that is mounted on a vehicle and can be operated to lock and unlock the door, start the engine, etc. without using a mechanical key if the user has a smart key. It is.

  FIG. 1 is an external perspective view of a smart key according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the smart key 1 shown in FIG. Hereinafter, the configuration of the smart key 1 will be described with reference to these drawings.

  As shown in FIG. 1 and FIG. 2, the smart key 1 of the present embodiment is configured to include a portable device body 2 and an emergency key 3 accommodated in the portable device body 2.

  The portable device body 2 functions as an electronic key, and includes an upper case 10, a lower case 20, a release hook 30, and the like. The outer shape of the portable device body 2 is composed of an upper case 10, a lower case 20, and a release hook 30, and the smart key 1 is formed by inserting the emergency key 3 into the portable device body 2.

  The upper case 10 and the lower case 20 have a shape such that a thin rectangular parallelepiped is divided into two, each being a container, and each corner of the container is rounded. . The release hook 30 is arranged on one side surface corresponding to the long side of the rectangular parallelepiped, and the emergency key 3 is arranged inside each case 10 and 20 along the one side surface. Key 1 is configured.

  Specifically, as shown in FIG. 2, in the internal space formed by the upper case 10 and the lower case constituting the outer shape of the portable device body 2, the upper case 10 to the lower case 20 side, The knob member 40, the waterproof cover 50, the protective cover 60, the circuit board 70, the battery holder 80, the cushion sheet 90, and the battery 95 are arranged in this order. In FIG. 2, circuit elements formed on the circuit board 70 are omitted.

  The knob member 40 has a push button type knob 41 for locking and unlocking a door in the vehicle. Each knob 41 is exposed to the surface of the upper case 10 from the opening 11 provided in the upper case 10 and is operated by the user.

  The waterproof cover 50 sandwiches the knob member 40 together with the upper case 10 and is integrated with the upper case 10 so that water and foreign matter entering from the opening 11 of the upper case 10 do not enter the lower case 20 side. . As such a waterproof cover 50, a material such as rubber that hardly absorbs moisture and has elasticity is adopted. Accordingly, the waterproof cover 50 is elastically deformed when the knob 41 is pressed, and returns to its original shape when the user removes the finger from the knob 41.

  The protective cover 60 has a plate shape that covers one side of the circuit board 70, that is, the upper surface. As such a protective cover 60, for example, a resin such as polycarbonate is employed.

  The circuit board 70 includes a communication circuit that performs wireless communication with the outside. The circuit board 70 includes a push switch 71 on the upper surface of the circuit board 70 and an antenna element 72 on the other surface side of the circuit board 70, that is, the lower surface. Yes. Each switch 71 is disposed on the upper surface of the circuit board 70 at a location facing each knob 41 of the knob member 40 via the waterproof cover 50. Each switch 71 is pushed as each knob 41 is operated and the waterproof cover 50 is elastically deformed. The antenna element 72 transmits radio waves to the outside. The circuit element such as the antenna element 72 corresponds to the element of the present invention.

  When the user approaches the vehicle with the smart key 1 and enters the sensing area of the smart key system, the communication circuit receives an ID request signal from the vehicle side and automatically generates an ID code signal in response thereto. Output. As a result, ID authentication is performed on the vehicle side, and if they match, the system shifts to a door lock / unlock signal waiting state, and lock / unlock is executed by obtaining a lock / unlock signal in that state. .

  The battery holder 80 has a plate shape, covers the lower surface of the circuit board 70, and holds the battery 95. As such a battery holder 80, resin, such as a polycarbonate, is employ | adopted, for example. In the present embodiment, the battery holder 80 has substantially the same planar size as the circuit board 70.

  The cushion sheet 90 is disposed between the antenna element 72 mounted on the lower surface of the circuit board 70 and the lower case 20, and reduces the impact on the relatively heavy antenna element 72.

  The lower case 20 is provided with a protrusion 21 having functions of supporting and positioning the battery holder 80. Further, the lower case 20 and the upper case 10 are provided with a storage space for the emergency key 3, a space where the release hook 30 is disposed, and the like. The protrusion 21 may also be provided on the upper case 10.

  The release hook 30 is a mechanical button for allowing the emergency key 3 to be taken out from the portable device body 2 when pressed to the portable device body 2 side. Further, the emergency key 3 has a head portion 3a and a key portion 3b. The head portion 3a is a portion exposed from the portable device main body 2, and the emergency key 3 is removed from the portable device main body 2 when the user picks the head portion 3a. And the key part 3b is accommodated in the storage space comprised by the upper case 10 and the lower case 20 being assembled | attached. The above is the overall configuration of the smart key 1 according to the present embodiment.

  Next, the assembly structure of the protective cover 60, the circuit board 70, and the battery holder 80 will be described. First, each structure of the protective cover 60, the circuit board 70, and the battery holder 80 will be described.

  As shown in FIG. 2, the protective cover 60 is composed of a plate-like flat portion 61 and a rod-like support portion 62. The flat portion 61 is provided with a window portion 63 at a location facing each switch 71. Therefore, when the flat surface portion 61 of the protective cover 60 is overlaid on the upper surface of the circuit board 70, each switch 71 is inserted into each window portion 63, and each switch 71 protrudes from the protective cover 60. That is, the flat portion 61 has a thickness smaller than the height value of the switch 71.

  In addition, a plurality of support portions 62 are provided on the side surface of the flat portion 61. Each support part 62 is a part used when integrating the protective cover 60 and the battery holder 80. Further, each support portion 62 is provided on the side surface of the flat surface portion 61 so as to protrude toward the circuit board 70 rather than the surface of the flat surface portion 61 opposite to the surface facing the circuit board 70. At least three support portions 62 are preferably provided from the viewpoint of preventing the circuit board 70 from being removed. In this embodiment, for example, six support portions 62 are provided on the protective cover 60.

  In addition, each support part 62 is provided so that it may protrude in the circuit board 70 side from the surface which faces the circuit board 70 among the plane parts 61 other than the case where it arrange | positions on the side surface of the flat part 61 as mentioned above. It does not matter.

  In the circuit board 70, a notch 73 is provided at a location facing the rod-shaped support portion 62 provided on the protective cover 60, and at a location that does not affect the circuit wiring or the like, of the outer edge portion of the circuit board 70. It has been. As a result, each support portion 62 is inserted into each cutout portion 73, so that the flat portion 61 of the protective cover 60 is superimposed on the upper surface of the circuit board 70. In addition, the notch part 73 is corresponded to the penetration part of this invention.

  The battery holder 80 has a plate shape, and has a recess 81 on one side of the plate facing the lower surface of the circuit board 70. In the circuit board 70, circuit elements and mounting components installed on the lower surface are exposed from the surface of the circuit board 70. For this reason, when the battery holder 80 is overlapped with the circuit board 70, the recess 81 is a part that forms a space for storing circuit elements and the like provided on the lower surface of the circuit board 70.

  On the other surface side of the battery holder 80, a storage portion 82 for disposing the battery 95 and a window portion 83 for disposing a cushion sheet 90 for reducing the impact on the antenna element 72 of the circuit board 70 are provided.

  Further, a plurality of hole portions 84 for accommodating the respective support portions 62 are provided on the outer edge portion of the battery holder 80 at locations facing the respective support portions 62 of the protective cover 60. Each hole 84 is provided so as to penetrate the battery holder 80, and when each support portion 62 is inserted into each hole 84, the tip of each support portion 62 is exposed from the battery holder 80. Yes.

  3 is a perspective view showing a state in which the protective cover 60, the circuit board 70, and the battery holder 80 are assembled. FIG. 3A is a perspective view of the battery holder 80 side from the protective cover 60, and FIG. FIG. 6 is a perspective view of the protective cover 60 viewed from the battery holder 80.

  As shown in FIG. 3, the circuit board 70 is sandwiched between the protective cover 60 and the battery holder 80 to form one package. As shown in FIG. 3A, each switch 71 disposed on the upper surface of the circuit board 70 is exposed from the window 63 of the protective cover 60. Further, as shown in FIG. 3B, the battery 95 is installed in the storage part 82 of the battery holder 80, and the cushion sheet 90 is arranged in the window part 83. Further, the support portions 62 of the protective cover 60 are inserted into the hole portions 84 of the battery holder 80, and the tips are exposed from the battery holder 80.

  In the present embodiment, the tip of each support portion 62 is joined to the battery holder 80 by heat caulking, and the battery holder 80 and the protective cover 60 are integrated. Such a package is manufactured as follows.

  Specifically, first, the circuit board 70 on which the antenna element 72 and the circuit element are mounted is disposed between the protective cover 60 and the battery holder 80. The support portions 62 of the protective cover 60 are inserted into the notches 73 of the circuit board 70 and are inserted into the holes 84 of the battery holder 80. As a result, the circuit board 70 is sandwiched between the protective cover 60 and the battery holder 80.

  Thereafter, at least the tips of the support portions 62 protruding from the holes 84 of the battery holder 80 are heated and melted, whereby the tips of the support portions 62 are deformed and joined to the battery holder 80. Thus, a package in which the protective cover 60, the circuit board 70, and the battery holder 80 are integrated is manufactured.

  Thus, since the support part 62 of the protective cover 60 is heated and welded to the battery holder 80, the protective cover 60 and the battery holder 80 are preferably made of the same material.

  In this case, not only the tips of the support portions 62 but also the battery holder 80 may be heated and melted to join the tips of the support portions 62. Thereby, the protective cover 60 and the battery holder 80 can be joined more firmly. Therefore, in the case where the support portions 62 of the protective cover 60 and the battery holder 80 are heated to join the support portions 62, it is particularly preferable that the materials of both are the same.

  After the joining, the circuit board 70 is sandwiched between the protective cover 60 and the battery holder 80, and the movement of the circuit board 70 is restricted by inserting each support part 62 into the notch 73 of the outer edge. Further, each switch 71 of the circuit board 70 is disposed in each window portion 63 of the protective cover 60, and the antenna element 72, the circuit element, and the like of the circuit board 70 are accommodated in the recess 81 of the battery holder 80. For this reason, the problem that the circuit board 70 is detached from the protective cover 60 and the battery holder 80 due to movement in the surface direction of the circuit board 70 does not occur.

  The smart key 1 shown in FIG. 1 is manufactured as follows. Specifically, an upper case 10, a lower case 20, a knob member 40, and a waterproof cover 50 are prepared. Further, as shown above, the protective cover 60, the circuit board 70, the battery holder 80, the cushion sheet 90, and the battery 95 shown in FIG. 3 packaged are prepared.

  Subsequently, each knob 41 of the knob member 40 is inserted into each opening 11 of the upper case, and the waterproof cover 50 is assembled. Then, the package shown in FIG. 3 is arranged in the lower case 20. At this time, since the protrusion 21 is provided on the lower case 20, the battery holder 80 can be easily positioned with respect to the lower case 20, and the positional deviation between the lower case 20 and the battery holder 80 after assembly is reduced. Don't get up.

  Thereafter, the lower case 20 and the upper case 10 are assembled so that the above-described components are housed between the lower case 20 and the upper case 10 without depending on parts such as screws. , 20 are integrated to form the portable device body 2. In this case, the lower case 20 and the upper case 10 are assembled so that the release hook 30 is disposed on one side surface of the portable device body 2.

  In addition to the portable device main body 2, an emergency key 3 in which a head portion 3a and a key portion 3b are assembled is prepared and inserted into the portable device main body 2, thereby completing the smart key 1 shown in FIG. .

  When the battery 95 is replaced, the cases 10 and 20 can be disassembled, the package shown in FIG. 3 can be taken out and only the battery 95 can be replaced, so that the user does not touch the circuit board 70.

  As described above, in the present embodiment, the protective cover 60 provided with the rod-like support portion 62 and the battery holder 80 provided with the hole portion 84 for inserting the support portion 62 are prepared, and both surfaces of the circuit board 70 are prepared. Is characterized by being packaged by being sandwiched between the protective cover 60 and the battery holder 80. In this case, the tip of each support portion 62 of the protective cover 60 is caulked by heat to the battery holder 80 so that the protective cover 60 cannot be easily removed from the battery holder 80.

  Thus, since the user cannot take out the circuit board 70 unless the user destroys the protective cover 60 or the battery holder 80, the user can be prevented from touching the circuit elements of the circuit board 70 easily. Inadvertent destruction of the circuit element by touching the element can also be prevented. Further, since the circuit board 70 cannot be easily touched, it is possible to prevent the user from intentionally modifying the circuit of the circuit board 70. Therefore, the user can replace the battery without touching the circuit board 70.

  On the other hand, the user cannot take out the circuit board 70 unless the protective cover 60 and the battery holder 80 are destroyed. For this reason, when the user takes out the circuit board 70, the destruction mark remains on the protective cover 60 and the battery holder 80. By discovering this, it is possible to confirm that there has been some destruction by the user.

  Further, since the protective cover 60 is arranged in a space excluding each switch 71 on the upper surface of the circuit board 70, it is not necessary to provide a special space for providing the protective cover 60. Further, in addition to providing the protective cover 60, it is only necessary to provide the notch 73 in the circuit board 70 and the hole 84 in the battery holder 80. Therefore, the smart key 1 is configured following the conventional configuration. be able to.

(Second Embodiment)
In the present embodiment, only different parts from the first embodiment will be described. In the first embodiment, the circuit board 70 is sandwiched between the protective cover 60 and the battery holder 80, and the tips of the support portions 62 of the protective cover 60 protruding from the holes 84 of the battery holder 80 are the battery. The feature is that the holder 80 is caulked with heat, but the present embodiment is characterized in that the tip of each support portion 62 of the protective cover 60 is caulked with heat to the circuit board 70.

  FIG. 4 is a diagram illustrating the protective cover 60, the circuit board 70, the battery holder 80, and the battery 95 according to the second embodiment. FIG. 4A illustrates the protective cover 60, the circuit board 70, the battery holder 80, and the battery 95. FIG. 4B is an external perspective view in which the protective cover 60 and the battery holder 80 are assembled to the circuit board 70.

  As shown in FIG. 4A, in the present embodiment, a plurality of support portions 62 are provided on the side surface of the protective cover 60, and a plurality of protrusion portions 64 that protrude from the side surface are provided. A cutout 73 is provided on the outer edge of the circuit board 70 at a location facing each support 62 of the protective cover 60. A plurality of claw portions 85 are provided on the outer edge portion of the battery holder 80. The claw portion 85 is a so-called snap fit. In addition, the notch part 73 shown by this embodiment is corresponded to the 1st penetration part of this invention.

  On the outer edge portion of the circuit board 70, a notch 74 is provided at a location facing each claw portion 85 of the battery holder 80 and not affecting the circuit wiring or the like. Further, each protrusion 64 of the protective cover 60 is provided at a location on the side surface of the protective cover 60 that faces each claw 85 of the battery holder 80. In addition, the notch part 74 shown by this embodiment is corresponded to the 2nd penetration part of this invention.

  Then, as shown in FIG. 4B, the circuit board 70 is sandwiched between the protective cover 60 and the battery holder 80. In this case, the battery holder 80 is superimposed on the lower surface of the circuit board 70, and the claw portion 85 of the battery holder 80 is caught by the protruding portion 64 of the protective cover 60 via the notch 74 of the circuit board 70. It has become. In this manner, the protective cover 60, the circuit board 70, and the battery holder 80 are integrated to form one package. A battery 95 is installed in the storage portion 82 of the battery holder 80.

  In such an assembly structure, the protective cover 60 is fixed to the circuit board 70 by heat caulking. This is shown in FIG. FIG. 5 is a perspective view showing a state in which the protective cover 60 and the circuit board 70 shown in FIG. 4 are assembled. FIG. 5A is a perspective view of the circuit board 70 side from the protective cover 60, and FIG. FIG. 6 is a perspective view of the protective cover 60 viewed from the circuit board 70.

  As shown in FIG. 5A, the flat portion 61 of the protective cover 60 is overlapped with the upper surface of the circuit board 70, and the respective portions disposed on the upper surface of the circuit board 70 from the window portion 63 of the protective cover 60. The switch 71 is exposed and the upper surface of the circuit board 70 is covered with the flat portion 61.

  Further, as shown in FIG. 5B, the tips of the support portions 62 protruding to the lower surface side of the circuit board 70 through the notches 73 of the circuit board 70 are heat staked to the circuit board 70, A caulking portion 62a is provided. As a result, the support portions 62 of the protective cover 60 are joined and integrated with the circuit board 70 so that the circuit elements formed on the upper surface of the circuit board 70 are not easily touched by the user.

  As described above, the battery cover 80 is superposed on the lower surface side of the circuit board 70 and the claw portions 85 are elastically deformed so that the protective cover 60 protrudes from the integrated protective cover 60 and the circuit board 70. The package shown in FIG. 4B can be obtained by being hooked on the portion 64 and housed in the cutout portion 73 of the circuit board 70. In this case, since the nail | claw part 85 presses the protrusion part 64 of the protective cover 60 to the circuit board 70 side, the adhesiveness of the protective cover 60 and the circuit board 70 can be improved. Further, the circuit board 70 may be sandwiched between the protective cover 60 and the battery holder 80.

  As described above, the support portions 62 of the protective cover 60 can be joined and integrated with the circuit board 70. This prevents the user from touching the circuit elements easily because the user cannot touch the circuit elements on the upper surface of the circuit board 70 unless the user destroys the caulking portion 62a or the protective cover 60 itself. It is possible to prevent the circuit element from being destroyed.

(Other embodiments)
In the above embodiment, the tip of each support portion 62 is heated and caulked to the battery holder 80. However, as a method for joining each support portion 62, a laser welding method or an ultrasonic welding method may be employed. it can.

  In the above embodiment, the battery holder 80 has a planar size comparable to that of the circuit board 70, but may be smaller than the lower surface of the circuit board 70. In other words, any size may be used as long as the battery element 80 covers the circuit elements on the lower surface of the circuit board 70. Similarly, the size of the flat portion 61 of the protective cover 60 may be smaller than the upper surface of the circuit board 70.

  In the above embodiment, each support portion 62 is disposed on the side surface of the flat surface portion 61 in the protective cover 60. However, as long as space is allowed, the support portion 62 may be disposed on the surface of the flat surface portion 61 facing the circuit board 70. I do not care. In this case, a through hole through which each support portion 62 passes can be provided in the surface of the circuit board 70, and similarly, a hole portion 84 for heat-caching each support portion 62 can be provided in the battery holder 80. In this case, since the support portion 62 passes through each through hole of the circuit board 70, the movement of the circuit board 70 in the surface direction is restricted by each support portion 62. Thus, the place where each support portion 62 of the protective cover 60 that is heat-caulked to the battery holder 80 is not limited to the side surface of the flat surface portion 61 but may be in the plane of the flat surface portion 61.

  The smart key 1 shown in the above embodiment is an example to which the present invention is applied, and may have another structure. For example, the outer shape of the smart key 1 may be an ellipse or an ellipse.

  In the second embodiment, the protruding portion 64 for hooking the claw portion 85 of the battery holder 80 is provided on the side surface of the protective cover 60, but the protruding portion 64 may not be provided on the protective cover 60. That is, the battery holder 80 and the circuit board 70 may be integrated by directly hooking the claw portion of the battery holder 80 onto the upper surface of the circuit board 70.

  In the second embodiment, each claw portion 85 is provided on the outer edge portion of the battery holder 80. However, if space is allowed, for example, each claw portion 85 is provided in the central portion of the battery holder 80 and the circuit board that faces the claw portion 85 is provided. A through-hole through which each claw portion 85 passes is provided in the central portion of 70, and when the circuit board 70 and the battery holder 80 are overlapped, each claw portion 85 is hooked and fixed by being inserted into the through-hole of the circuit board 70. You can also. In this case, since the upper surface of the circuit board 70 is covered with the protective cover 60, the battery holder 80 cannot be easily removed even if the claw portion 85 is snap fit. In addition, since the protective cover 60 is fixed to the circuit board 70 by the caulking portion 62a, the user cannot take out the circuit board 70 unless the protective cover 60 or the battery holder 80 is destroyed.

  In the above embodiment, the smart key system portable device has been described as an example. However, the present invention can be applied not only to the smart key system but also to other electronic key system portable devices such as a keyless entry system.

  In addition, the electronic key system is not limited to the one mounted on the vehicle, and the present invention can be applied to an electronic key system employed for other purposes. For example, the present invention can also be applied to a portable device of an electronic key system adopted for a door such as a house entrance.

1 is an external perspective view of a smart key according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the smart key shown in FIG. 1. It is the perspective view which showed a mode that the protective cover shown in FIG. 2, the circuit board, and the battery holder were assembled | attached, (a) is the perspective view which looked at the battery holder side from the protective cover, (b) is the protective cover from the battery holder. It is the perspective view which looked at the side. It is the figure which showed the protective cover, circuit board, battery holder, and battery which concern on 2nd Embodiment, (a) is an exploded perspective view of a protective cover, a circuit board, a battery holder, and a battery, (b) is a circuit board. It is the external appearance perspective view which assembled | attached the protective cover and the battery holder. It is the perspective view which showed a mode that the protective cover shown in FIG. 4 and the circuit board were assembled | attached, (a) is the perspective view which looked at the circuit board side from the protective cover, (b) is the protective cover side from the circuit board. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Smart key, 2 ... Mobile device main body, 3 ... Emergency key, 10 ... Upper case, 20 ... Lower case, 21 ... Projection part, 60 ... Protection cover, 61 ... Plane part, 62 ... Support part, 63 ... Window 70, circuit board, 71 ... switch, 72 ... antenna element, 73, 74 ... notch, 80 ... battery holder, 81 ... recess, 84 ... hole, 85 ... claw, 95 ... battery.

Claims (10)

A circuit board (70) on which an element (72) for performing wireless communication with the outside is mounted in a case (10, 20) constituting the outer shape of the portable device body (2), and the circuit board (70). A portable device in which a protective cover (60) overlaid on one surface side and a plate-shaped battery holder (80) overlaid on the other surface side of the circuit board (70) and holding a battery (95) are stored. There,
The protective cover (60) includes a plate-like flat part (61) and a rod-like support part (62), and the plurality of support parts (62) are the circuits of the flat part (61). Provided on the flat surface portion (61) so as to protrude from the surface facing the substrate (70) toward the circuit board (70),
The circuit board (70) is a place facing the plurality of support portions (62) of the protective cover (60) in the circuit board (70) when the protective cover (60) is superimposed on one surface side. A through portion (73) through which the plurality of support portions (62) are inserted,
When the battery holder (80) is superimposed on the circuit board (70) together with the protective cover (60), the plurality of support portions (62) of the protective cover (60) of the battery holder (80). A plurality of through holes (84) into which the plurality of support parts (62) are inserted,
The plurality of support portions (62) of the protective cover (60) are inserted into the through portions (73) of the circuit board (70), and into the hole portions (84) of the battery holder (80). And the circuit board (70) is sandwiched between the protective cover (60) and the battery holder (80),
Furthermore, at least the tips of the support portions (62) protruding from the hole portions (84) of the battery holder (80) are heated and melted, so that the tips of the support portions (62) become the batteries. A portable device of an electronic key system, characterized in that the protective cover (60), the circuit board (70), and the battery holder (80) are integrated with a holder (80). Of the protective cover (60), each of the support portions (62) is provided on a side surface of the flat surface portion (61), and each of the through portions (73) into which the support portions (62) are inserted and the The portable device of the electronic key system according to claim 1, wherein each hole (84) is provided on an outer edge portion of the circuit board (70) and the battery holder (80), respectively. The portable device of the electronic key system according to claim 1 or 2, wherein a tip of each of the support portions (62) of the protective cover (60) is heat staked to the battery holder (80), respectively. . The tips of the support portions (62) protruding from the hole portions (84) of the battery holder (80) are heated and melted, and the support portions (62) in the hole portions (84) The tip of each said support part (62) is joined to the said battery holder (80), when the site | part which protrudes is heated and fuse | melted, The one of Claim 1 thru | or 3 characterized by the above-mentioned. Electronic key system portable machine. A circuit board (70) on which an element (72) for performing wireless communication with the outside is mounted in a case (10, 20) constituting the outer shape of the portable device body (2), and the circuit board (70). A portable device in which a protective cover (60) overlaid on one surface side and a plate-shaped battery holder (80) overlaid on the other surface side of the circuit board (70) and holding a battery (95) are stored. There,
The protective cover (60) includes a plate-like flat part (61) and a rod-like support part (62), and the plurality of support parts (62) are the circuits of the flat part (61). Provided on the flat surface portion (61) so as to protrude from the surface facing the substrate (70) toward the circuit board (70),
The circuit board (70) is a place facing the plurality of support portions (62) of the protective cover (60) in the circuit board (70) when the protective cover (60) is superimposed on one surface side. The first through part (73) through which the plurality of support parts (62) are inserted,
The plurality of support portions (62) of the protective cover (60) are inserted into the first through portions (73) of the circuit board (70), and the protective cover (60) and the circuit board (70). And at least the tips of the support portions (62) protruding from the first through portions (73) of the circuit board (70) are heated and melted. The tip of each support part (62) is joined to the circuit board (70), and the protective cover (60) and the circuit board (70) are integrated. Portable machine. When the battery holder (80) is superimposed on the other surface side of the circuit board (70), the surface of the battery holder (80) facing the circuit board (70) side from the surface facing the circuit board (70) side. A plurality of claw portions (85) protruding to
When the battery holder (80) is overlaid on the other surface side of the circuit board (70), the circuit board (70) has a plurality of locations at positions facing the claw portions of the battery holder (80). A second penetrating portion (74);
When the battery holder (80) is superimposed on the other surface side of the circuit board (70), the claw portions (85) of the battery holder (80) are elastically deformed, and the second through portions ( 74) and passes through one side of the circuit board (70) so that the battery holder (80) and the circuit board (70) are integrated. A portable device of the electronic key system described in 1. The portable device of the electronic key system according to claim 5 or 6, wherein the tip of each support portion (62) of the protective cover (60) is heat staked to the circuit board (70), respectively. . A switch (71) is installed on one side of the circuit board (70) facing the protective cover (60),
Of the protective cover (60), the flat surface portion (61) is provided with a window portion (63) at a location facing the switch (71),
When the planar portion (61) of the protective cover (60) is superimposed on one surface side of the circuit board (70), the switch (71) is inserted into the window portion (63) and the switch ( The portable device of the electronic key system according to any one of claims 1 to 7, wherein 71) protrudes from the protective cover (60). The battery holder (80) is provided with a recess (81) on the side facing the other side of the circuit board (70), and the battery holder (80) is overlapped with the circuit board (70). The element (72) mounted on the other surface side of the circuit board (70) is accommodated in the recess (81). A portable device of the electronic key system described in 1. The protrusion (21) which fixes the position of the said battery holder (80) in the position where the said battery holder (80) is arrange | positioned at least among the said cases (10, 20) is provided. Item 10. The portable device of the electronic key system according to any one of Items 1 to 9.

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