JP5454930B2 - Vehicle portable device - Google Patents

Description

  The present invention relates to a portable device for a vehicle (hereinafter simply referred to as a “portable device”) that can be carried by a user and transmits / receives radio waves to / from an object (for example, a vehicle door). A system that unlocks and / or locks a vehicle door by communicating with a portable device is referred to as a “smart entry system”, a “keyless entry system”, or the like.

  A system that unlocks and / or locks a vehicle door by transmitting and receiving radio waves at a position away from the vehicle is known. In this system, a user (for example, a driver) has a small portable device, and the door is unlocked or locked based on the result of collating the ID code with the portable device by wireless communication. The present applicant has also applied for a portable device (see Patent Document 1). Since the portable device is possessed by the user, it is desirable that the portable device be lightweight and small.

  Since this type of portable device is compatible with domestic specific low power, it is necessary to cover the electronic component mounted on the board with a casing that cannot be easily opened and closed according to the regulations of the Radio Law. For this reason, in the conventional portable device 100 shown in FIG. 10, the upper surface of the substrate 51 (surface on which electronic components are mounted) is covered with the element protection cover 52 except for the switch portion, and the lower surface. The battery holder forming cover 53 is covered (the surface on which the battery holder is provided), and the fixing pieces 54 extended from the element protection cover 52 are heat-caulked to integrate both. Then, as shown in FIG. 11, the substrate assembly 55 that is in that state (a state that cannot be easily opened and closed by being integrated) is accommodated in the upper and lower case bodies 56 and 57.

  For this reason, the number of parts is increased and the number of processing steps is also increased, which is a cause of cost increase.

JP 2009-215739 A

  This invention makes it a subject to reduce a number of parts and a processing man-hour in the portable device for vehicles in view of the above-mentioned malfunction.

The present invention for solving the above problems is as follows.
It is a portable device for a vehicle that can be carried and carried by a user, which can be wirelessly communicated with a communication target on the vehicle side and is necessary when using the vehicle,
A board on which electronic components for wireless communication are mounted on the surface;
Including a case for holding the substrate inside,
The case is provided with first and second case parts made of a resin that is separably assembled so as to directly enclose the substrate, and at least one of which is a shallow container.
The substrate has one of a first case portion and a second case portion, and a mounting portion formed in a case portion having a shallow container shape, the electronic component is opposed to a bottom surface of the case portion, and at the time of the separation Fixing that is attached so that the back surface on which the electronic component of the substrate is not mounted is exposed, and is integrally projected from the peripheral portion of the mounting portion of the one case portion and deformed to the outer peripheral portion of the back surface of the substrate It is integrated with the one case part by a piece,
With respect to the case portion integrated with the substrate, by the other of the case portion is detachably coupled to cover the back surface of the substrate, it is assumed that the substrate is built into the case.

  The vehicular portable device according to the present invention is configured as described above, and the substrate on which the electronic component is mounted is mounted on a mounting portion formed in one of the first and second case portions constituting the case. Then, the fixing piece protruding from the peripheral edge of the mounting portion is deformed at the outer peripheral edge portion of the back surface (the surface on which the electronic component is not mounted) exposed from the case portion, so that the case portion and the substrate are Integrated. Thereby, the substrate is integrally attached to the case portion in a state where it cannot be easily separated.

  In a conventional portable device, in order to comply with the regulations of the Radio Law, a cover body that covers the substrate is used separately from the case portion. For this reason, the number of parts is increased, and a large number of processing steps are required. However, in the present invention, the substrate is directly attached to the case portion, and the case portion and the substrate are integrated with a fixing piece provided on the case portion. As a result, there is an effect that the number of parts is reduced and the number of processing steps is reduced.

  The case includes first and second case parts made of resin, which are separably assembled so as to directly enclose the substrate, and are formed in a shallow container shape and are joined at respective openings.

And the mounting part of the said case part is provided in the stepped state with the 1st space part by which the electronic component of the said board | substrate is arrange | positioned, and the 2nd space part by which the board | substrate body of the said board | substrate is arrange | positioned,
The substrate can be mounted in a positioned state by the outer peripheral edge of the substrate body contacting the step surfaces of the first and second space portions.

  When the substrate is attached to the mounting portion of the case portion, the substrate body of the substrate contacts the step surfaces of the first and second space portions. Thereby, since the substrate is positioned, the mounting operation is easy.

And the fixed piece is provided to project along the thickness direction of the substrate body from a position where it does not interfere with the substrate on the step surface of the case portion, and its tip is disposed beyond the back surface of the substrate,
The case portion and the substrate may be integrated by bending the tip end portion of the fixed piece by heat crimping.

  That is, heat caulking can be performed to deform the tip of the fixed piece. This heat caulking can be easily performed by pressing a heated jig against the tip of the fixed piece. In addition, in order to deform | transform the front-end | tip part of a fixed piece, you may perform means (for example, press molding) other than heat caulking.

And, in the connecting portion between the outer peripheral surface of the fixed piece and the stepped surface, a groove is formed in a form extending the outer peripheral surface of the fixed piece along the thickness direction of the substrate body,
The fixed piece may be bent with a position corresponding to the bottom surface of the groove as a fulcrum.

  As a result, the amount of deformation of the fixed piece increases by the depth of the groove portion, and the case portion and the substrate can be reliably integrated.

  And the fixed piece may protrude over the whole peripheral part in the periphery of said one case part, or may protrude integrally from the several site | part of a periphery.

  It is desirable that a rubber ring be interposed on the coupling surface of the first and second case portions.

  Thereby, when the 1st and 2nd case part is couple | bonded, watertightness is achieved by the rubber ring, and life waterproofing can be ensured.

It is a perspective view of the decomposition | disassembly state of the portable device 101 of 1st Example. (A) is front sectional drawing of the portable device 101, (b) is an enlarged view of the principal part. It is a front sectional view of an exploded state similarly. 3 is a bottom view of the case body 1. FIG. It is a figure which shows the process of bending the fixing piece. It is a bottom view of the case body 1 provided with a plurality of fixing pieces. It is a perspective view of the portable device 102 of 2nd Example. (A) is front sectional drawing of the portable device 102 of 2nd Example, (b) is an effect | action explanatory drawing. 4 is a perspective view of a state in which the mobile device 101 is attached to a strap of a mobile phone 36. FIG. (A) is the perspective view of the conventional portable device 100, (b) is an exploded perspective view similarly. It is action | operation explanatory drawing of the state which assemble | attaches the board | substrate assembly 55 to the upper and lower case bodies 56 and 57. FIG.

  Hereinafter, embodiments of the present invention will be described in detail. 1 is an exploded perspective view of the portable device 101 of the first embodiment, FIG. 2A is a front sectional view of the portable device 101, FIG. 1B is an enlarged view of the main part, and FIG. FIG. 4 is a bottom view of the case body 1.

  The portable device 101 according to the first embodiment will be described. As shown in FIGS. 1 to 3, the portable device 101 of the first embodiment has a substantially short cylindrical shape (shallow container shape) in which the upper surface is closed and the lower surface is open, and a space portion (described later) is provided inside. The electronic component 3 is mounted on one side (upper surface) of the case main body 1 (first case portion) and the board main body 2, and the other side (lower surface) is used for operating the portable device 101. A substrate 6 provided with a battery accommodating portion 5 for accommodating a battery 4 for supplying power, a lid 7 (second case portion) for closing the opening of the case main body 1, and the case main body 1 and the lid 7 And a rubber ring 8 that holds the portable device 101 in a watertight state. In the case of the portable device 101 of the present embodiment, the battery housing portion 5 is provided on the substrate 6, but this may be provided on the lid 7. Hereinafter, each member will be described.

  First, the case body 1 will be described. The case body 1 is made of a resin material (for example, polycarbonate). The case main body 1 has a short cylindrical shape with an open lower surface, and the outer peripheral surface of the peripheral wall portion 9 has a curved shape in order to improve design. In the inner part of the case body 1, a first space part 12 is provided in the vicinity of the ceiling surface 11 for accommodating the electronic component 3 of the substrate 6 and the substrate body 2 of the disk-shaped substrate 6 is accommodated. The second space portion 13 and the third space portion 14 provided in the vicinity of the opening for fitting the lid body 7 are provided in a stepped state (a form in which their cross-sectional areas are sequentially increased). Yes. Moreover, in the 1st space part 12, the ceiling surface 11 and the internal peripheral surface 15 of the 1st space part 12 become diagonal with respect to the axis line 16 (The cross-sectional area of the 1st space part 2 becomes large, so that it goes below. Connected) by the connection surface 17.

  A first step surface 18 is provided at the joint between the first space portion 12 and the second space portion 13. A second step surface 19 is provided at the joint between the second space portion 13 and the third space portion 14. A thin-walled (thickness t) fixing piece 21 extends along the axis 16 at the inner peripheral edge of the second space 13 (joint with the inner peripheral surface 15 of the first space 12). It extends downward. In addition, a groove portion 23 having a width W is provided over the entire circumference at a joint portion between the second step surface 19 and the outer peripheral surface 21 b of the fixed piece 21. The width W of the groove 23 is slightly smaller than the thickness t of the fixed piece 21. Here, the protrusion length from the second step surface 19 in the fixed piece 21 is described as H1, and the perforation length from the second step surface 19 in the groove portion 23 is described as H2.

  When the substrate 6 is accommodated in the case body 1, the substrate 6 enters the opening of the case body 1 with the electronic component 3 side first. The size of the substrate body 2 of the substrate 6 is larger than the cross-sectional area of the first space portion 12 of the case body 1. Thereby, the electronic component 3 of the substrate 6 is disposed in the first space portion 12 of the case body 1, and the substrate body 2 of the substrate 6 is pressed against the first step surface 18 of the case body 1 and the first part of the case body 1. 2 arranged in the space 13. In this state, the distal end portion (lower end portion) of the fixed piece 21 is disposed below the lower surface of the substrate 6. In other words, the protruding length H <b> 1 of the fixed piece 21 is larger than the thickness T of the substrate body 2. In this state, the fixed piece 21 is bent toward the inner side (axis 16 side) (described later), whereby the fixed piece 21 presses the peripheral edge portion of the lower surface of the substrate body 2. The substrate 6 is held immovably in the axial direction and the radial direction by sandwiching the substrate body 2 between the first step surface 18 and the fixed piece 21.

  At the lower part of the inner peripheral surface 24 of the third space portion 14 in the case body 1, there is a protrusion 25 that has a substantially triangular cross section and protrudes from the inner peripheral surface 24 along the radial direction (that is, toward the axis 16). It is provided over the entire circumference. When the lid body 7 is fitted into the third space 14 of the case body 1, the protrusion 25 is bent outward (elastically deformed) to guide the lid body 7, and the lid body 7 is fitted. And has a function of preventing the lid body 7 from coming out of the third space portion 14.

  Next, the lid 7 will be described. The lid 7 is made of a resin material (for example, polycarbonate) in the same manner as the case body 1. The lid body 7 has a short cylindrical shape with an upper surface opened and a lower surface closed, and the peripheral wall portion 26 is fitted in the third space portion 14 of the case body 1. The bottom surface of the lid body 7 is slightly curved, and a support member 27 that supports the battery 3 is projected. In addition, a protrusion 28 is provided on the upper end of the peripheral wall 26 of the lid 7 and has a substantially triangular cross section and projects outward in the radial direction. When the lid 7 is fitted to the case body 1, first, the lower inclined surface 25 a of the protrusion 25 of the case body 1 and the upper inclined surface 28 a of the protrusion 28 of the lid 7 abut. When the case body 1 and the lid body 7 are relatively pushed in, at least one of the peripheral wall portions 9 and 26 bends (elastic deformation).

  Further, when the case body 1 and the lid body 7 are relatively pushed in, the top portions of the projecting portions 25 and 28 pass through each other. Then, the peripheral wall portions 9 and 26 that have been elastically deformed are elastically restored, and the upper inclined surface 25b of the protruding portion 25 of the case body 1 and the lower inclined surface 28b of the protruding portion 28 of the lid body 7 come into contact with each other. Thereby, the lid 7 can be prevented from coming off.

  A rubber ring 8 is interposed between the second step surface 19 of the case body 1 and the upper surface of the peripheral wall portion 26 of the lid body 7. Thereby, the watertightness of the portable device 101 is achieved, and the water that has entered from the gap between the case main body 1 and the lid body 7 enters the portion where the substrate 6 is disposed (first and second space portions 12, 13). There is nothing.

  Next, a method of bending the fixing piece 21 in a state where the substrate 6 is disposed on the case body 1 will be described. As shown in FIG. 5A, the mold 29 is lowered from above in a state where the substrate 6 is disposed on the case body 1. A tip portion (lower end portion) of the molding die 29 is provided with a molding portion 29 a that is curved corresponding to the fixed piece 21. The maximum inner diameter D1 of the molding portion 29a of the molding die 29 is slightly larger than the outer diameter d1 of the fixing piece 21 of the case body 1. Further, the outer diameter D2 of the molding portion 29a is slightly smaller than the inner diameter d2 of the groove portion 23 of the case body 1. The molding die 29 in which the molding part 29a is heated by a heating means (not shown) is lowered. Then, the molding portion 29 a comes into contact with the distal end portion (upper end portion) of the fixed piece 21. When the molding die 29 is further lowered, as shown in FIG. 5B, the distal end portion of the fixed piece 21 is bent inward (on the axis 16 side) by the pressing force of the molding die 29. Then, the tip of the molding part 29 a enters the groove part 23. At this time, the distal end portion of the fixed piece 21 is gradually bent while conforming to the curved surface of the molding portion 29a, so that the fixed piece 21 is curved (curled). At this time, since the fixing piece 21 is softened by the heat of the mold 29, it can be bent more easily. Thereby, the distal end portion of the fixed piece 21 in the curved state presses the peripheral edge portion of the substrate body 2 of the substrate 6. The substrate 6 is sandwiched between the fixed piece 21 and the second step surface 18 and is held immovable.

  In the present specification, the case where the case body 1 is turned over and the mold 29 is lowered from above has been described. However, the mold 29 may be raised from below the case body 1.

  In the case body 1 of the present embodiment, a groove portion 23 is formed in the outer peripheral portion of the fixed piece 21 so as to be continuous with the outer peripheral surface 21 b of the fixed piece 21. The fulcrum 31 when the fixing piece 21 is bent by the groove 23 is provided to be shifted downward (to the ceiling surface 11 side of the case body 1) by a depth H <b> 2 from the second step surface 19 of the groove 23. . For this reason, the fixed piece 21 is bent around the fulcrum 31 existing in a portion deeper than the second step surface 19 by the depth H2. As a result, even if the length of the fixed piece 21 (the protruding length H1 from the second step surface 19; see FIG. 2B) is not so large, There is an effect that the bridge (overlap length L) with the peripheral edge of the substrate body 2 is increased.

  In the present specification, as a method of bending the fixed piece 21, the case where the fixed piece 21 is pressed (pressed) while being heated has been described. Thereby, the fixed piece 21 can be reliably deformed. However, when the fixed piece 21 is easily deformed, it may be bent only by pressing.

  Moreover, the fixed piece 21 does not need to be provided over the perimeter. That is, as shown in FIG. 6, a plurality of fixing pieces 21 are provided at a predetermined angle in the circumferential direction (for example, eight fixing pieces 21 are provided at an angle of 45 degrees in the circumferential direction). Also good.

  Next, the portable device 102 of the second embodiment will be described. As shown in FIG. 7 and FIG. 8A, a push button hole 32 is provided in the case body 1 of the portable device 102 of the second embodiment, and a push button 33 is attached to the push button hole 32. Yes. The push button 33 is, for example, a button for unlocking or locking a vehicle door. A flange portion 33a larger than the inner diameter of the push button hole 32 is provided at the lower end portion of the push button 33 so that the push button 33 is prevented from being pulled out. In addition, on the upper surface of the substrate 6 (the surface facing the push button 33), the electronic component 3 having the switch unit 34 is mounted immediately below the push button 33. When the switch unit 34 is pressed, radio waves are transmitted from the electronic component 3. Further, a cover body 35 made of an elastic member such as thin rubber is attached between the push button 33 and the switch portion 34. Only the peripheral edge portion of the cover body 35 is fixed to the inner peripheral surface 15 and the connection surface 17 of the first space portion 12 of the case body 1 by means such as an adhesive. In a normal state (when the portable device 102 is not used), the push button 33 is pushed up by the cover body 35, and a slight gap is provided between the push button 33 and the switch unit 34. The cover body 35 has a function of preventing water and the like from entering from the push button hole 32 and holding the substrate 6 in a watertight state.

  As shown in FIG. 8B, when the user of the portable device 102 pushes the push button 33, the switch unit 34 is pushed through the cover body 35. Thereby, the radio wave for unlocking or locking the door is transmitted, and the door is reliably unlocked or locked.

  Since the portable devices 101 and 102 of the present embodiment are compact, they can be attached to, for example, the strap 37 of the cellular phone 36 as shown in FIG.

  The present invention can be used as a portable device possessed by a user for unlocking and / or locking a door of a vehicle.

1 Case body (first case part)
2 Board body (Board)
3 Electronic component 6 Substrate 7 Lid (second case part)
8 Rubber ring 11 Ceiling (bottom)
12 1st space part (mounting part)
13 Second space (mounting part)
18 First step surface (periphery)
19 Second step surface (periphery)
21 fixed piece 21b outer peripheral surface 23 of fixed piece groove part 34 switch part (electronic component)
101,102 portable device

Claims (5)

It is a portable device for a vehicle that can be carried and carried by a user, which can be wirelessly communicated with a communication target on the vehicle side and is necessary when using the vehicle,
A board on which electronic components for wireless communication are mounted on the surface;
Including a case for holding the substrate inside,
The case is provided with first and second case parts made of a resin that is separably assembled so as to directly enclose the substrate, and at least one of which is a shallow container.
The substrate has one of a first case portion and a second case portion, and a mounting portion formed in a case portion having a shallow container shape, the electronic component is opposed to a bottom surface of the case portion, and at the time of the separation Fixing that is attached so that the back surface on which the electronic component of the substrate is not mounted is exposed, and is integrally projected from the peripheral portion of the mounting portion of the one case portion and deformed to the outer peripheral portion of the back surface of the substrate It is integrated with the one case part by a piece,
For the case unit integrated with the substrate, the other case unit is separably coupled so as to cover the back surface of the substrate, whereby the substrate is incorporated in the case ,
The mounting portion of the case portion is provided with a first space portion in which electronic components of the substrate are disposed and a second space portion in which the substrate body of the substrate is disposed in a stepped state.
The substrate is mounted in a positioning state by the outer peripheral edge of the substrate body contacting the step surfaces of the first and second space portions,
In the connection portion between the outer peripheral surface of the fixed piece and the stepped surface, a groove is formed in a form extending the outer peripheral surface of the fixed piece along the thickness direction of the substrate body,
The portable device for a vehicle , wherein the fixing piece is bent with a position corresponding to the bottom surface of the groove as a fulcrum .   The case includes first and second case parts made of resin, which are separably assembled so as to directly enclose the substrate, and are formed in a shallow container shape and are joined at respective openings. The portable device for a vehicle according to claim 1. The fixing piece is provided so as to protrude along the thickness direction of the substrate body from a position where it does not interfere with the substrate on the step surface of the case portion, and the tip thereof is disposed beyond the back surface of the substrate,
The portable device for a vehicle according to claim 1 or 2, wherein the case portion and the substrate are integrated by heat crimping and bending the front end portion of the fixed piece . 4. The portable device for a vehicle according to claim 1 , wherein the fixed piece integrally protrudes from a plurality of portions at a peripheral edge of the one case portion . 5. The portable device for vehicles according to any one of claims 1 to 4 , wherein a rubber ring is interposed on a coupling surface of the first and second case portions .