JP4092168B2 - Portable machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable device in which an antenna, a substrate that supports an electronic circuit to which the antenna is connected, and a battery that supplies operation power to the electronic circuit are housed in a housing.
[0002]
[Prior art]
In a remote locking / unlocking device for vehicles that locks and unlocks doors by emitting radio waves from a portable device owned by the vehicle user to the vehicle, a button type is used to make the card-type portable device as thin as possible. Among the positive terminals and mimas terminals that are connected to the electronic circuit, the positive terminal is in contact with the positive electrode on the outer periphery of the button-type battery and the negative terminal is in contact with the negative electrode on the side of the button-type battery. It is known from the following patent document.
[0003]
[Patent Literature]
Japanese Utility Model Publication No. 5-37405 [0004]
[Problems to be solved by the invention]
By the way, since the board that supports the electronic circuit of the portable machine of this type of remote locking / unlocking device for vehicles is fixed inside the housing with screws or pins, special parts for fixing may be required. There is a problem that the number of assembling steps increases, and because the board is fixed to the housing integrally, when the thin housing is bent by external force, the inner board is also equivalent (same / same amount) There is a possibility that the electronic parts fixed to the substrate and the soldered parts thereof are damaged due to bending.
[0005]
The present invention has been made in view of the above-described circumstances, and does not require a special fixing member, and fixes the substrate inside the housing of the portable device and damages the substrate when the housing is bent by an external force. The purpose is to prevent.
[0006]
[Means for Solving the Problems]
To achieve the above object, according to the first aspect of the present invention, an antenna, a substrate for supporting an electronic circuit connected to the antenna, and a battery for supplying an operating power to the electronic circuit are provided. In a state where the board is housed in the housing , the board is moved between the edge of the board and the inner surface of the housing in the direction along the plate surface of the board with respect to the housing of the board. A predetermined gap to be allowed is formed, the battery is brought into contact with an elastic power terminal fixed to the edge of the substrate, and the substrate is biased in one direction along the plate surface by the elastic force of the power terminal. Accordingly , a portable device is proposed that is pressed against the inner surface of the housing .
[0007]
According to the above configuration, by contacting the cell to a fixed power supply terminal to the edge of the movable substrate in a direction along the plate surface is accommodated in the housing, using the resilient force of the power supply terminal since as pressed against the inner surface of the housing to bias in one direction along the substrate to the plate surface Te, it is possible to prevent the occurrence of backlash and noise to fix the substrate to the housing. As a result, a special fixing member for fixing the substrate to the housing and the number of assembly steps for assembling the substrate to the housing can be reduced, and the substrate is fixed by the elastic force of the power supply terminal, so that it is added to the housing. Bending and impact can be made difficult to be transmitted to the substrate.
[0008]
According to the second aspect of the present invention, in addition to the configuration of the first aspect, a portable device is proposed in which the substrate is supported inside the housing so as to be movable in the thickness direction. .
[0009]
According to the above configuration, when the housing is bent, the substrate is not only movable along the plate surface of the substrate with respect to the housing but also the substrate is movable in the thickness direction with respect to the housing. In addition, the deformation amount of the substrate can be made smaller than the deformation amount of the housing, and damage to the electronic components attached to the substrate and damage to the soldered portion can be prevented.
[0010]
According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the housing is divided into a lower housing and an upper housing formed in a rectangular shape. A portable device is proposed in which a reinforcing rib extending along the length direction and the width direction of the one housing is formed on the inner surface, and according to the configuration, due to the rigidity improvement effect of the reinforcing rib, It is possible to suppress bending in the length direction and width direction of the housing, and to prevent damage to an electronic component or the like fixed to a substrate housed therein or damage to a soldered portion.
[0011]
According to the invention described in claim 4, in addition to the configuration of claim 3, the antenna includes a coiled antenna fixed to the surface of the substrate along the peripheral edge thereof, and the reinforcement A portable device is proposed in which the rib is arranged so as to face the inside of the coiled antenna. According to this configuration, when the housing is bent by an external force, the reinforcing rib is formed on the substrate. It is possible to prevent a large load from being applied in contact with the edge.
[0012]
According to the invention described in claim 5, in addition to the configuration of claim 4, the antenna includes a second antenna extending along one side edge of the substrate, and the second antenna A portable device is proposed, characterized in that a second reinforcing rib extending so as to block a gap formed between an antenna and the coiled antenna is formed on the inner surface of the one housing. According to the above, since the second reinforcing rib also serves as an insulating wall between the coiled antenna and the second antenna, it is possible to contribute to a reduction in the number of parts and a reduction in space.
[0013]
In the present invention, the “plate surface” of the substrate refers to an outer surface orthogonal to the thickness direction of the substrate.
[0014]
The LF antennas 16, 17, 18 and the RF antenna 19 of the embodiment correspond to the antenna of the present invention, and the plus terminal 36 of the embodiment corresponds to the power supply terminal of the present invention.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on the embodiments of the present invention shown in the accompanying drawings.
[0016]
1 to 12 show an embodiment of the present invention. FIG. 1 is a diagram showing the overall configuration of a vehicle remote locking / unlocking device. FIG. 2 is a block diagram of the vehicle remote locking / unlocking device. 3 is an overall plan view of the portable transmitter / receiver, FIG. 4 is an exploded perspective view of the portable transmitter / receiver, FIG. 5 is a diagram showing a state in which the upper housing of the portable transmitter / receiver is removed, and FIG. 6 is an enlarged sectional view taken along line 6-6, FIG. 7 is a plan view of the battery holder, FIG. 8 is an enlarged view of essential parts of FIG. 3 (with the upper housing removed), and FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG. 10 is an enlarged cross-sectional view taken along line 10-10 of FIG. 8, FIG. 11 is an operation explanatory diagram corresponding to FIG. 8, and FIG. 12 is an operation explanatory diagram corresponding to FIG.
[0017]
As shown in FIGS. 1 and 2, a remote locking / unlocking device for a vehicle for locking and unlocking a door of a vehicle V without using a key is carried by a vehicle user in a pocket or bag. The card-type portable transmitter / receiver 11 is included. An LF (low frequency) receiver 13, an RF (radio frequency) transmitter 14, and an RF (radio frequency) receiver 15 are connected to the control unit 12 of the portable transmitter / receiver 11, and LF reception is performed. Three LF antennas 16, 17, and 18 are connected to the machine 13, and a common RF antenna 19 is connected to the RF transmitter 14 and the RF receiver 15.
[0018]
On the other hand, the control unit 20 provided on the vehicle V side includes a lock switch 22L and an unlock switch 23L provided on the left door 21L, a lock switch 22R and an unlock switch 23R provided on the right door 21R, and LF. A transmitter 24, an RF transmitter 25, an RF receiver 26, and a door lock actuator 27 are connected. The left and right LF antennas 28L and 28R are connected to the LF transmitter 24, and the RF transmitter. 25 and the RF receiver 26 are connected to a common RF antenna 29.
[0019]
Thus, when the vehicle user wearing the portable transmitter / receiver 11 presses the unlocking switch 23L of the left door 21L or the unlocking switch 23R of the right door 21R, the LF antennas 28L and 28R on the vehicle V side The portable transmitter / receiver 11 that has received the ID request signal and received it by the LF antennas 16 to 18 transmits the ID signal stored in the control unit 12 from the RF antenna 19. The control unit 20 that has received the ID signal by the RF antenna 29 on the vehicle V side checks whether or not the ID is a regular ID. If the ID is a regular ID, the control unit 20 transmits a random number signal x from the RF antenna 29.
[0020]
The portable transmitter / receiver 11 that has received the random number signal x by the RF antenna 19 transmits the function signal f (x) calculated from the random number signal x based on the program stored in the control unit 12 from the RF antenna 19, and the function. The control unit 20 that receives the signal f (x) by the RF antenna 29 on the vehicle V side compares the function signal f (x) calculated from the random number signal x with the received function signal f (x). Are matched, the door lock actuator 27 is actuated to unlock the doors 21L and 21R.
[0021]
Similarly, when the vehicle user wearing the portable transmitter / receiver 11 presses the lock switch 22L of the left door 21L or the lock switch 22R of the right door 21R, the control unit 20 activates the lock actuator 27. The doors 21L and 21R are locked.
[0022]
Next, the structure of the portable transmitter / receiver 11 will be described with reference to FIGS.
[0023]
As shown in FIGS. 3 to 5, the portable transmitter / receiver 11 is a card type having a rectangular shape as a whole, and is formed to be extremely thin so that it can be easily stored in a wallet or the like. Hereinafter, the four sides of the rectangular portable transmitter / receiver 11 are referred to as a right side R, a left side L, an upper side U, and a lower side D (see FIG. 3).
[0024]
The housing 30 of the portable transmitter / receiver 11 is divided into a lower housing 31 and an upper housing 32 formed in a rectangular shape with a synthetic resin, and is formed along the right side R, the left side L, and the lower side D of the lower housing 31. A groove-shaped recess 31a, three groove-shaped recesses 31b, 31c, 31d formed near the upper side U, and a pin-shaped protrusion 31e formed near the center of the recess 31a. Rib-shaped convex portions 32a formed along the right side R, left side L and lower side D of the upper housing 32, and three rib-shaped convex portions 32b, 32c, 32d formed near the upper side U; A hole-like concave portion 32e formed near the center of the convex portion 32a is fitted, and the lower housing 31 and the upper housing 32 are fixed by welding at the fitting portions. .
[0025]
On the inner surface of the upper housing 32, a linear reinforcing rib 32f extending in the length direction (right side R and left side L directions) and a cross-like shape extending in the length direction and width direction (upper side U and lower side D directions) Reinforcing ribs 32g and 32h are formed, and the recess 32e is located at the intersection of the cross-shaped reinforcing ribs 32g and 32h. Further, the upper housing 32 is formed with one through hole 32 i penetrating the front and back. Further, in order to position the lower housing 31 and the upper housing 32 with each other, the two positioning holes 31f and 31f formed in the lower housing 31 have two pieces formed in the upper housing 32 in order to position them relative to each other. The positioning pins 32j and 32j are fitted.
[0026]
The RF antenna 19 is fixed to the surface of the rectangular substrate 33 accommodated in the space formed between the lower housing 31 and the upper housing 32 along the peripheral edge facing the right side R of the portable transmitter / receiver 11. The Of the three LF antennas 16, 17, 18 fixed to the substrate 33 so that the axes are orthogonal to each other, the two LF antennas 16, 17 are composed of ferrite antennas, and the remaining one LF antenna 18. Consists of a rectangular air coil antenna without a bobbin. The LF antenna 18 formed of an air coil antenna is fixed along the peripheral edge of the substrate 33 facing the lower side D, the left side L, and the upper side U of the portable transmitter / receiver 11 and the RF antenna 19. Further, a large number of electronic components 34 and one LED (light emitting diode) 35 constituting an electronic circuit including a receiving circuit of the portable transmitter / receiver 11 are fixed to the surface of the substrate 33, and the center of the substrate 33 is fixed. A through hole 33a through which the pin-like convex portion 31e of the lower housing 31 penetrates loosely is formed in the portion. The LED 35 faces the back side of the through hole 33a, and the light emitted from the LED 35 can be viewed through the through hole 33a.
[0027]
Two plus terminals 36, 36 and two minus terminals 37, 37 each made of a metal plate having elasticity are fixed to the periphery of the substrate 33 facing the upper side U of the portable transmitter / receiver 11. The Each plus terminal 36 is bent by approximately 180 °, and a contact 36 a at the tip thereof extends along the peripheral edge of the substrate 33. On the other hand, each minus terminal 37 extends toward the upper side U of the portable transmitter / receiver 11, and a contact point 37 a is formed at the tip thereof.
[0028]
As is clear from FIGS. 3 and 6, the linear reinforcing rib 32 f provided in the upper housing 32 extends so as to block the gap α formed between the RF antenna 19 and the LF antenna 18. Therefore, without increasing the thickness of the housing 30, the rigidity of the housing 30 is increased by the reinforcing rib 32f to suppress the bending due to the external force, and damage or soldering of the electronic components 34 fixed to the board 33 housed in the housing 30 is prevented. Damage to the attachment portion can be prevented. In addition, since the reinforcing rib 32f also serves as an insulating wall between the RF antenna 19 and the LF antenna 18, it is not necessary to provide a bobbin in the LF antenna 18 to prevent a short circuit with the RF antenna 19, thereby reducing the number of parts and the space. Can contribute.
[0029]
In addition, cross-shaped gaps β and γ in which no electronic components or the like are arranged are formed on the surface of the substrate 33, and the cross-shaped reinforcing ribs 32g and 32h of the upper housing 32 are arranged in the gaps β and γ. . Due to the effect of improving the rigidity of the cross-shaped reinforcing ribs 32g and 32h, the bending of the housing 30 in the length direction and the width direction is suppressed, and damage or soldering of the electronic components 34 fixed to the board 33 housed therein is performed. Damage to the part can be prevented. In particular, the cross-shaped reinforcing ribs 32g and 32h are disposed inside the rectangular LF antenna 18, and their four tip ends end in front of the peripheral edge of the substrate 33, so that the housing 30 is bent by an external force. In this case, it is possible to prevent the reinforcing ribs 32g and 32h from coming into contact with the edge of the substrate 33 and applying a large load.
[0030]
In addition, in a state where the board 33 on which the electronic circuit is mounted is housed in the housing 30, the board 33 is not firmly fixed to the lower housing 31 and the upper housing 32, but in the front-rear and left-right directions (that is, on the plate surface of the board 33). and a slightly movable clearance direction) and vertical direction (i.e. the thickness direction of the substrate 33) along. In addition, since a gap is formed between the height direction ends of the reinforcing ribs 32f, 32g, and 32h and the surface of the substrate 33 (see FIG. 6), even when the housing 30 is bent, The bending load is less likely to be transmitted to the substrate 33 housed therein, and the deformation of the substrate 33 can be minimized and the durability can be improved.
[0031]
As shown in FIGS. 7 to 10, the battery holder 38 includes a holder body 39 made of synthetic resin, and a metal cap 40 fixed to the holder body 39. The holder body 39 is formed with two support holes 39a and 39a for supporting the two coin-type batteries 41 and 41, and stepped battery support surfaces 39b and 39b are formed at the periphery of the support holes. The At both ends of the holder main body 39, arm portions 39d and 39d having locking claws 39c and 39c formed at the tips are provided, and two locking latches that can be engaged with the locking claws 39c and 39c. Portions 31g and 31g (see FIG. 8) are formed in the lower housing 31.
[0032]
Furthermore, first and second projecting portions 39e and 39f are formed inside the pair of arm portions 39d and 39d of the holder main body 39 so as to surround a part of the support holes 39a and 39a, and the first projecting portion 39e is long. The length is shorter than the length of the second protrusion 39f. On the other hand, the lower housing 31 is formed with a stopper portion 31h that cooperates with the first protrusion 39e and the second protrusion 39f (see FIG. 8).
[0033]
As is clear from FIG. 7, the battery 41 has a positive electrode 41a formed by one side surface and an outer peripheral surface thereof, and a negative electrode 41b formed by the other side surface. A step 41c between the outer peripheral surface and the other side surface is formed. The holder body 39 is supported by the support hole 39a so as to be fitted to the battery support surface 39b. When the two batteries 41, 41 are held by the battery holder 38 and inserted into the housing 30, the latching claws 39c, 39c provided at the tips of the pair of arms 39d, 39d having elasticity of the holder body 39 are lowered. The battery holder 38 is coupled to the housing 30 by engaging with the locking portions 31 g and 31 g of the housing 31.
[0034]
In this state, the outer peripheries of the positive electrodes 41a and 41a of the batteries 41 and 41 elastically contact the contacts 36a and 36a of the positive terminals 36 and 36 provided on the substrate 33, and the negative electrodes 41b and 41b of the batteries 41 and 41, respectively. The electronic circuit of the portable transmitter / receiver 11 is operated by elastically contacting 41b with the contacts 37a and 37a of the minus terminals 37 and 37 provided on the substrate 33.
[0035]
As described above, the substrate 33 is not fixed inside the housing 30 and is provided with a gap so as to be slightly movable. However, when the battery holder 38 is coupled to the housing 30, the outer peripheral portions of the batteries 41 and 41 are provided. 8 abuts against the plus terminals 36 and 36 of the substrate 33 and presses in the direction of arrow A in FIG. 8, whereby the substrate 33 is urged by the elastic force of the plus terminals 36 and 36 toward the lower side D of the inner surface of the housing 30. Since it is pressed, it is possible to prevent the substrate 33 from rattling or generating abnormal noise.
[0036]
As described above, by using the elastic force of the plus terminals 36, 36, it is possible to reduce a special fixing member for fixing the substrate 33 to the housing 30 and an assembling man-hour for assembling the substrate 33 to the housing 30. Moreover, bending and impact applied to the housing 30 can be made difficult to be transmitted to the substrate 33. In particular, the substrate 33 is not only movable back and forth and left and right with respect to the housing 30 but also movable in the thickness direction, so that the amount of deformation of the substrate 33 compared to the amount of deformation of the housing 30 when the housing 30 is bent. The amount of deformation can be reduced, and damage to the electronic component 34 attached to the substrate 33 and damage to the soldered portion can be prevented.
[0037]
When the batteries 41, 41 are mounted in the support holes 39a, 39a of the holder main body 39 of the battery holder 38 upside down, the step portions 41c, 41c of the batteries 41, 41 and the battery support surfaces 39b, 39b of the holder main body 39 are aligned. First, the negative electrodes 41b and 41b of the batteries 41 and 41 protrude in the thickness direction from the holder main body 39, making it difficult to insert the battery holder 38 into the housing 30, so that the batteries 41 and 41 are mounted upside down. It becomes easier to notice that.
[0038]
If the battery holder 38 is forcibly inserted into the housing 30 without noticing that the batteries 41, 41 are mounted upside down, as shown in FIG. It can be coupled to the housing 30 once. However, the positive electrodes 41 a and 41 a on one side of the batteries 41 and 41 are in contact with the contacts 37 a and 37 a of the negative terminals 37 and 37 of the substrate 33, and the positive electrodes 41 a and 41 a on the outer periphery of the batteries 41 and 41 are connected to the substrate 33. In order to contact the contacts 36a and 36a of the plus terminals 36 and 36, that is, in order for both the plus terminals 36 and 36 and the minus terminals 37 and 37 of the substrate 33 to contact the plus electrodes 41a and 41a of the batteries 41 and 41, It is possible to prevent the reverse current from flowing through the electronic circuit and causing damage.
[0039]
Even if the batteries 41 and 41 are correctly mounted on the battery holder 38, if the battery holder 38 is mounted on the housing 30 with the front and back reversed, power cannot be supplied to the electronic circuit. As is apparent from FIG. 8, if there is no error in the front and back of the battery holder 38, the shorter first projection 39e of the holder body 39 does not interfere with the stopper portion 31h of the lower housing 31. 30. On the other hand, as is apparent from FIG. 11, when the battery holder 38 is inserted into the housing 30 upside down, the longer second protrusion 39 f of the holder body 39 interferes with the stopper portion 31 h of the lower housing 31. As a result (see point p in FIG. 11), the battery holder 38 cannot be completely inserted into the housing 30, and thus the battery holder 38 can be reliably prevented from being assembled.
[0040]
In order to remove the battery holder 38 from the housing 30, the pair of arms 39d and 39d of the holder main body 39 are pushed inward with two fingers to remove the latching claws 39c and 39c from the latching portions 31g and 31g. Thereafter, the battery holder 38 may be pulled out of the housing 30 while holding the arm portions 39d and 39d.
[0041]
Although the embodiments of the present invention have been described above, various design changes can be made without departing from the scope of the present invention.
[0042]
For example, the use of the portable device of the present invention is not limited to the vehicle remote locking / unlocking device for locking and unlocking the doors 21L and 21R of the vehicle V.
[0043]
【The invention's effect】
According to the invention described in claim 1 as described above, it is brought into contact with the battery to a fixed power supply terminal to the edge of the movable substrate in a direction along the plate surface is accommodated in the housing, Using the elastic force of the power terminal, the board is urged in one direction along the plate surface and pressed against the inner surface of the housing, so the board is fixed to the housing to prevent backlash and noise. can do. As a result, a special fixing member for fixing the substrate to the housing and the number of assembly steps for assembling the substrate to the housing can be reduced, and the substrate is fixed by the elastic force of the power supply terminal, so that it is added to the housing. Bending and impact can be made difficult to be transmitted to the substrate.
[0044]
According to the invention described in claim 2, the substrate is not only movable in the direction along the plate surface of the substrate relative to the housing, but also the substrate is movable in the thickness direction relative to the housing. Therefore, when the housing is bent, the deformation amount of the substrate can be made smaller than the deformation amount of the housing, and the damage of the electronic components attached to the substrate and the damage of the soldered portion can be prevented.
[0045]
According to the invention described in claim 3, due to the effect of improving the rigidity of the reinforcing rib, the bending in the length direction and the width direction of the housing is suppressed, and damages to electronic components and the like fixed to the substrate housed in the housing are reduced. Damage to the soldered portion can be prevented.
[0046]
According to the invention described in claim 4, when the housing is bent by an external force, it is possible to prevent the reinforcing rib from coming into contact with the edge of the substrate and applying a large load.
[0047]
Further, according to the invention described in claim 5, since the second reinforcing rib also serves as an insulating wall between the coiled antenna and the second antenna, it is possible to contribute to the reduction of the number of parts and the space.
[Brief description of the drawings]
FIG. 1 is a diagram showing the overall configuration of a vehicle remote locking / unlocking device. FIG. 2 is a block diagram of a vehicle remote locking / unlocking device. FIG. 3 is an overall plan view of a portable transmitter / receiver. Fig. 5 is an exploded perspective view of the portable transmitter / receiver. Fig. 5 is a diagram showing a state where the upper housing of the portable transmitter / receiver is removed. Fig. 6 is an enlarged sectional view taken along line 6-6 in Fig. 3. Fig. 7 is a plan view of the battery holder. FIG. 8 is an enlarged view of the main part of FIG. 3 (with the upper housing removed).
9 is an enlarged cross-sectional view taken along line 9-9 in FIG. 8. FIG. 10 is an enlarged cross-sectional view taken along line 10-10 in FIG. 8. FIG. 11 is an explanatory diagram corresponding to FIG. Illustration [Explanation of symbols]
16 LF antenna (antenna)
17 LF antenna (antenna)
18 LF antenna ( coiled antenna)
19 RF antenna ( second antenna)
30 Housing
31 lower housing
32 upper housing
32f reinforcing rib (second reinforcing rib)
32g, 32h reinforcing rib 33 Substrate 36 Positive terminal (power terminal)
41 battery
α gap

Claims (5)

Inside the housing (30) are antennas (16-18, 19), a substrate (33) supporting the electronic circuit to which the antennas (16-18, 19) are connected, and a battery for supplying operating power to the electronic circuit. (41)
In a state where the substrate (33) is housed in the housing (30), between the edge of the substrate (33) and the inner surface of the housing (30) , the substrate (33) with respect to the housing (30) Forming a predetermined gap allowing movement in the direction along the plate surface of the substrate (33) ;
The battery (41) is brought into contact with the elastic power supply terminal (36) fixed to the edge of the substrate (33), and the elastic force of the power supply terminal (36) brings the substrate (33) along the plate surface. A portable device that is pressed against the inner surface of the housing (30) by being biased in one direction .   The portable device according to claim 1, wherein the substrate (33) is supported inside the housing (30) so as to be movable in the thickness direction. The housing (30) is divided into a rectangular lower housing (31) and an upper housing (32), and the length of the one housing (32) is formed on the inner surface of the one housing (32). The portable device according to claim 1 or 2, wherein reinforcing ribs (32g, 32h) extending along the vertical direction and the horizontal direction are formed. The antennas (16-18, 19) include a coiled antenna (18) fixed to the surface of the substrate (33) along its peripheral edge, and the reinforcing ribs (32g, 32h) 4. The portable device according to claim 3, wherein the portable device is arranged so as to face an inner side of the coiled antenna (18). The antennas (16 to 18, 19) include a second antenna (19) extending along one side edge of the substrate (33), and the second antenna (19) and the coiled antenna are included. A second reinforcing rib (32f) extending so as to block a gap (α) formed between the antenna (18) and the antenna (18) is formed on an inner surface of the one housing (32). Item 5. The portable device according to Item 4.

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