JP5800874B2 - Electronic key system portable machine - Google Patents

Description

  The present invention relates to a portable device of an electronic key system having a waterproof function. In particular, the present invention relates to a portable device of an electronic key system that can lock and unlock a vehicle door, start an engine, and the like without using a mechanical key.

There is known a portable device used in an electronic key system that locks and unlocks a vehicle door, starts an engine and a hybrid system without using a mechanical key (for example, Patent Document 1).
The portable device includes an outer case including a first case and a second case, and a waterproof member disposed in a space portion of the outer case, and is a printed wiring housed in a space surrounded by the first case and the waterproof member. A holder member is integrally attached to the back side of the substrate, an antenna wire is wound around the outer periphery of the holder member, and a button type battery is accommodated in a through hole of the holder member.

In addition, an electronic device such as a remote controller that remotely moves and moves a device such as a television from a remote location is known (for example, Patent Document 2).
This electronic device is formed in a flat plate shape in which the lower side of the device body is shaped as a ship bottom, a space is formed, a weight is provided at the bottom, and the upper side of the device body is projected outward from the lower side. The outer peripheral part protruding to the outer peripheral side is provided with a recess for storing air that opens to the lower side of the equipment body, the joint part between the body case and the operation part of the equipment body, the battery cover, and the infrared light emitting part are Each has a waterproof structure that ensures watertightness.

  Even when such an electronic device is dropped into water, it can be floated on the water surface with the upper surface of the electronic device exposed on the water surface. It has become possible to ensure sex.

Japanese Patent No. 3955823 (FIGS. 1 and 2) Japanese Patent No. 3823901 (FIGS. 6 and 8)

When a portable device used in an electronic key system is used for, for example, a ship, it is often used on the seaside, such as on a hull, and there is a risk that the portable device may accidentally fall into the water by sliding during operation. There is sex. In that case, it is necessary to prevent water from entering the electronic component placement portion inside the portable device and to float on the water in order to prevent damage to the electronic device and loss of the portable device itself.
In the technique of Patent Document 2, when the upper part of the apparatus main body is provided with an outer peripheral part that protrudes more outward than the lower part of the apparatus main body, or when the apparatus main body floats on water, An operation such as providing a weight on the lower member so that the joint portion with the side member is located above the water surface is required.

Moreover, in order to float an apparatus main body on water, it is necessary to earn buoyancy by providing a waterproof space part inside a main body. Here, in the portable device of the electronic key system, it is necessary to arrange a large element such as an antenna coil in the waterproof space. Even if an attempt is made to apply a space for securing buoyancy to a portable device of an electronic key stem as in Patent Document 2, in the portable device of the electronic key system, the battery contacts the electrode on the circuit board, Since a large component is mounted on the same side as the battery, the large component must be arranged in the space portion in Patent Document 2.
Therefore, in the portable device of the electronic key system, it is difficult to provide a space portion for ensuring sufficient buoyancy in the circuit board arrangement direction as in Patent Document 2.

  Moreover, in the portable device of the electronic key system, the user needs to be able to easily replace the battery, and further needs to be easily reassembled. On the other hand, it is desirable that the cover and the base constituting the outer shape of the electronic key stem are not screwed from the viewpoint of design and cost, and use a fitting structure with claws.

  The present invention has been made to solve the above-mentioned problems. Even if the portable device is accidentally dropped in the water, the waterproofing is maintained, the electronic key function is impaired, or the electronic device is lost by being submerged. The electronic key does not require any changes such as addition of an outer shell-shaped protrusion that impairs the design of the portable device, which is a design part, the size of the portable device main body, and processes that are not necessary for the function of the portable device The object is to provide a portable device of the system.

The portable device of the electronic key system according to the present invention includes a cover and a base constituting the outer shape of the portable device main body, a case arranged in the base, a circuit board supported by the case and mounted with electronic components, one side of the circuit board, Waterproof packing disposed between the cover and the battery, a battery fixing cap disposed between the base and the case, and a battery held by the battery fixing cap and electrically connected to the electronic components on the circuit board. The case has an electronic component storage portion, the antenna coil mounted on the circuit board is disposed in the electronic component storage portion, and a space that contributes to buoyancy to water is provided. The battery fixing cap has a cylindrical shape. Alternatively, it has a battery support portion formed of a plurality of pillars and an O-ring compression portion projecting in a cylindrical shape on its outer periphery, and is sandwiched between a base and a case, The battery fixing cap has a space that contributes to water buoyancy between the battery fixing cap and the surface on the opposite side of the battery circuit board. Therefore, the battery is supported by the cylindrical or columnar top of the battery support portion .

According to the present invention, when the portable device falls into water, for example, water does not enter the space in which the electronic components inside the portable device are arranged, so that the function as an electronic key is impaired. There is nothing. In addition, since a space for the portable device body to float on water is secured, there is no fear that the portable device will be lost in the sea.
Furthermore, it is possible to prevent the addition of the design surface and size increase of the portable device body shape, float it in water, and easily replace the battery. Also, it is possible to reduce the process and cost by reducing the number of parts.

It is the external view and exploded perspective view of the portable device which concern on Embodiment 1 of this invention. It is the top view and sectional drawing of a portable machine concerning Embodiment 1 of this invention. It is the front view and perspective view of the battery fixing cap which are used for the portable machine which concerns on Embodiment 1 of this invention. It is sectional drawing of the portable device which concerns on Embodiment 2 of this invention, and a perspective view of a base. It is the perspective view and sectional drawing of the base of the portable machine which concern on Embodiment 3 of this invention. It is a perspective view of the base of the portable machine which concerns on Embodiment 4 of this invention.

Embodiment 1 FIG.
Hereinafter, a portable device of an electronic key system according to Embodiment 1 of the present invention will be described with reference to FIGS.
1A is an external view of a portable device, FIG. 1B is an exploded perspective view of the portable device, and shows components of the portable device of an electronic key system used for automobiles, motorcycles, outboard motors, and the like. ing.
In FIG. 1, the portable device main body is composed of a cover 1 and a base 2 that constitute the outer shape of the portable device body, and a case 3 formed in substantially the same shape as the base 2 is disposed in the base 2. The cover 1, the base 2, and the case 3 are made of a resin molded product. An operation button 4 of an electronic key that can lock and unlock a vehicle door, start an engine, and the like is disposed on a part of the cover 1.

The case 3 is configured to support the circuit board 5 on which electronic components such as an element for performing wireless communication with the outside and a tact switch are mounted, and between the one surface side of the circuit board 5 and the cover 1. A waterproof packing 6 is arranged in which each is superposed. A battery fixing cap 7 is disposed between the base 2 and the case 3, and a button-type flat battery 8 is held by the battery fixing cap 7. The battery fixing cap 7 is fixed to the case 3 by compressing the O-ring 9.
The plus electrode 10 is fixed to the case 3, the minus electrode 11 is mounted on the circuit board 5, and the battery 8 is in contact with the plus electrode 10 and the minus electrode 11, so that the electronic component mounted on the circuit board 5 and the electric Connected.

Next, FIG. 2A is a top view of the portable device, FIG. 2B is a cross-sectional view taken along the line BB of FIG. 2A, and FIG. 3A is for fixing a battery used in the portable device. A front view of the cap 7, FIG. 3 (b) shows a perspective view thereof. Based on these FIG. 2 and FIG. 3, it will be explained that the portable device body floats on water by buoyancy.
2 and 3, the cover 1 is fixed to the case 3 by fitting with a claw shape or the like. At this time, since the waterproof packing 6 is compressed by the cover 1 and the case 3, the waterproof packing 6 positions the circuit board 5, and the waterproof packing 6 and the case 3 are waterproofed.

Since the operation button 4 is arranged on a part of the cover 1, by applying force to the operation button 4, a tact switch (not shown) mounted on the circuit board 5 is pressed via the waterproof packing 6. And can perform various functions. Here, the operation button 4, the waterproof packing 6, and the arrangement and shape of the tact switch are cited as factors that affect the operability.
Next, on the lower surface side of the case 3, the base 2 is fixed to the case 3 by fitting with a claw like the cover 1. At this time, the battery fixing cap 7 is positioned while being sandwiched between the base 2 and the case 3.

As shown in FIGS. 3A and 3B, the battery fixing cap 7 includes a battery supporting portion 71 protruding in a cylindrical shape, and an O-ring compressing portion 72 protruding in the same cylindrical shape in the outer peripheral direction. . That is, the battery fixing cap 7 has two types of functions, such as a battery support function and a waterproof function, as shown in the figure.
Moreover, as a material of the battery fixing cap 7, a resin material such as a polymer alloy (PC / ABS or PC / polyester) that is lightweight, high-strength and excellent in moldability is suitable.

The battery 8 is supported by a battery fixing cap 7, and the space between the battery fixing cap 7 and the case 3 is waterproofed by an O-ring 9. That is, since the space (range) surrounded by the waterproof packing 6 and the battery fixing cap 7 is a waterproof area with waterproofness, the electronic components and the battery 8 on the circuit board 5 may break down due to water immersion. There is no failure in the communication function.
A space 30 that contributes to buoyancy in water is provided by the battery fixing cap 7 between the surface of the battery 8 opposite to the surface on the circuit board 5 side and the battery fixing cap 7.
Thus, according to the present invention, the area surrounded by the waterproof packing 6, the case 3, and the battery fixing cap 7 is a waterproof area, and the other areas are not waterproof. A space 30 that contributes to buoyancy is provided between the battery fixing cap 7 and the battery 8 which are waterproof regions.

Since the antenna coil 51 mounted on the circuit board 5 is larger and heavier than other electronic components, an electronic component storage portion 31 is provided in the case 3, and an antenna is provided in the electronic component storage portion 31. By storing the coil 51, the space inside the portable device can be used effectively.
Furthermore, it is preferable that the antenna coil 51 is housed in the case 3 from the viewpoint that it is difficult to receive pressure during operation of the operation button 4 and impact on the outer shell of the portable device.
By holding a large electronic component such as the antenna coil 51 in the case 3 while securing a space 30 for the portable device to float on water, the height of the mounted component on the side of the waterproof packing 6 of the circuit board 5 is minimized. Therefore, the increase in the size of the entire portable device can be suppressed.

Furthermore, in this structure, the electronic component support part 32 is provided in the electronic component storage part 31 in the case 3. Thus, by providing the electronic component support portion 32 on the case 3 and supporting the electronic component such as the antenna coil 51 with the electronic component support portion 32, an impact is applied to the electronic component when the portable device vibrates or drops. Reduce.
Further, when increasing the buoyancy of the portable device main body, it is preferable to secure the space of the electronic component storage portion 31 in the case 3 in addition to the space 30 between the battery 8 and the battery fixing cap 7.

Further, the battery 8 is arranged near the center of the circuit board 5 of the portable device main body, and the parts other than the battery such as the positive electrode fixing portion and the electronic parts are uniformly arranged around the battery 8 so that the volume of the waterproof space region is portable. With respect to the direction of the circuit board surface of the machine body, the battery housing part is arranged uniformly around the battery housing part.
As a result, the buoyancy generated inside the portable device when the portable device floats on the water becomes uniform, and the posture of the portable device is stabilized on the water surface. Here, the same effect is acquired by arrange | positioning the volume of the space part of the non-waterproof area | region between the base 2 and the case 3 equally.

  Further, among the components inside the portable device, the weighted antenna coil 51 is arranged in the vicinity of the center in the vertical direction of the circuit board 5 inside the portable device, so that the operation button 4 is stable on the water surface at a position higher than the water surface. Since the seawater or the like does not enter under the operation button 4, it is possible to suppress the fear of deterioration in operability and deterioration due to adhesion of foreign matters such as salt.

In addition, since the distance between the circuit board 5 and the operation button 4 greatly affects the operability of the portable device, the degree of freedom of arrangement of the circuit board 5 is limited to some extent by the cover 1. Therefore, the arrangement of the waterproof packing 6 and the circuit board support position of the case 3 are similarly restricted.
Depending on the arrangement of the electronic component storage portion 31 in the case 3 and the configuration of the fitting portion between the cover 1 and the base 2, the height of the case 3 in the direction perpendicular to the circuit board 5 is required to some extent. Therefore, a distance can be formed between the surface of the battery 8 on the battery fixing cap 7 side and the inner bottom surface of the base 2.

Therefore, by designing and arranging the battery fixing cap 7 so as to ensure the space 30 for the portable device to float on the water, for example, ensuring a sufficient height of the battery support portion 71 of the battery fixing cap 7. Thus, the waterproof area surrounded by the waterproof packing 6 and the battery fixing cap 7 can be used to the maximum, which contributes to the buoyancy of the portable device with respect to water.
Therefore, when the portable device is dropped into water, not only the function of the portable device is not impaired by the intrusion of water, but the portable device main body does not sink in water, for example, even if the portable device is dropped into the sea, The risk of losing a mobile device is reduced.

In addition, when a general user uses a portable device, the battery 8 needs to be replaced due to deterioration due to the life of the user. Therefore, the base 2 can be easily detached from the case 3 in order to take out the battery fixing cap 7. There is a need. For this reason, it is assumed that water will enter the gap between the fitting portions of the base 2 and the case 3, and even if this area is submerged, the function of the electronic key system does not fail.
On the other hand, the cover 1 and the case 3 are designed in a fitting shape that cannot be easily removed. This is to prevent the general user from easily touching or removing the circuit board 5 when the battery 8 is replaced or the like, and to prevent malfunctions, malfunctions, illegal modifications, etc. of the electronic key system. It is.

As described above, in the first embodiment, the range surrounded by the waterproof packing and the battery fixing cap is provided with waterproofing, and the surface on the opposite side of the surface of the battery on the side of the circuit board and the battery fixing cap are provided. In addition, the space that contributes to the buoyancy in water is provided by the battery cap, so it is portable only by designing the internal structure while suppressing the addition of the external shape of the portable device body, which is a design component, and the size increase of the portable device body. The buoyancy can be given to the machine, and the function of the electronic key system is not impaired by the water immersion inside the portable machine.
Furthermore, there is no need for modification by adding an outer shell-shaped protrusion that impairs the design of the portable device, which is a design part, increasing the size of the portable device body, and adding unnecessary processes in terms of the functions of the portable device. In addition, it is possible to reduce the number of parts and the assembly process, prevent erroneous assembly, and improve the reliability of the portable device body.

Embodiment 2. FIG.
Next, the portable device of the electronic key system in Embodiment 2 of this invention is demonstrated based on FIG.
4A is a sectional view of the portable device, and FIG. 4B is a perspective view of the base. As shown in FIG. 4 (b), the portable device in the second embodiment has two support portions 21 for the battery fixing caps 7 provided integrally with the base 2 along the major axis direction in the bottom of the base 2. Yes. The emergency key 40 can be mounted in the space between the base 2 and the case 3 formed by the battery fixing cap support 21. Other configurations are the same as those in FIG. 2 of the first embodiment, and the same or corresponding parts are denoted by the same reference numerals and description thereof is omitted.

By providing the battery fixing cap support portion 21 on the base 2 in this manner, the battery fixing cap 7 is stabilized between the base 2 and the case 3, and the battery fixing cap 7 is attached to the case 3. Can be easily fixed without using screws or hook structures.
Further, by providing the battery fixing cap support portion 21 on the base 2, a space is created between the base 2 and the case 3, and the emergency key 40 can be attached to this space. The emergency key 40 can be easily installed by the user. It is a structure that can be taken out.

  Also in the second embodiment, it is possible to give buoyancy to the portable device only by designing the internal structure, and the function of the electronic key system is not impaired by water immersion inside the portable device. Further, the battery fixing cap 7 can be easily fixed to the case 3, and the emergency key 40 can be easily taken out.

Embodiment 3 FIG.
Next, the portable device of the electronic key system in Embodiment 3 of this invention is demonstrated based on FIG.
FIG. 5A is a perspective view of the base, and FIG. 5B is a cross-sectional view of the portable device. As shown in FIG. 5A, the portable device in the third embodiment is configured such that the battery fixing cap 7 and the base 2 are integrated. Other configurations are the same as those in FIG. 2 of the first embodiment, and the same or corresponding parts are denoted by the same reference numerals and description thereof is omitted.

  By integrating the battery fixing cap 7 and the base 2 in this way, the waterproof space surrounded by the waterproof packing 6 and the battery fixing cap 7 can be used as much as the thickness of the battery fixing cap 7. It is possible to contribute to the buoyancy of the portable device body. Further, by integrating the battery fixing cap 7 and the base 2, the number of parts can be reduced, which leads to cost reduction.

Conventionally, the mounting process of the battery fixing cap 7 and the fitting process between the base 2 and the case 3 are different, but the adjustment of the fitting force of the claw 23 shown in FIG. The process of fixing the battery 8 by the base 2 and the process of fitting the base 2 to the case 3 by adjusting the hardness of the base 2 are the same process.
The base 2 has a structure in which the O-ring 9 is compressed by the battery fixing portion, and the base 2 can be positioned here. Furthermore, when an impact such as dropping the main body of the portable device is applied, in addition to the claw fitting between the base 2 and the case 3, the O-ring 9 can suppress the backlash of the base 2, and the strength of the portable device can be reduced. Reliability is improved.
Further, it is possible to prevent the user from forgetting to attach the battery fixing cap 7 when replacing the battery.

Embodiment 4 FIG.
Next, a portable device of an electronic key system according to Embodiment 4 of the present invention will be described with reference to FIG.
FIG. 6 is a perspective view of a base in the portable device. As shown in FIG. 6, the portable device in the fourth embodiment has a battery support portion 71 of the battery fixing cap 7 in the form of four pillars instead of the conventional cylindrical shape. Other configurations are the same as those in FIG. 2 of the first embodiment, and the same or corresponding parts are denoted by the same reference numerals and description thereof is omitted.
Thus, by making the battery support portion 71 of the battery fixing cap 7 into a columnar shape, the volume of the space contributing to buoyancy can be further increased.

Embodiment 5 FIG.
Next, a description will be given of the portable device in a fifth embodiment of the present invention. In the fifth embodiment, among the cover 1, which is a main component of the portable device shown in FIGS. 2 to 6, which is a resin molded product, the base 2 (including an integrated product with the battery fixing cap 7), and the case 3, The weight of the portable device body is reduced by changing a part of the material to a material having a relatively small specific gravity.

  Generally, as a material for the cover 1, the base 2 and the case 3, a polyamide resin or the like suitable as a design part material is often used because of its excellent mechanical strength and excellent precision molding. By changing to a polymer alloy (PC / ABS or PC / polyester) that has a lower specific gravity among materials that have no problems in strength and design, the buoyancy of the portable device in water is large. Bring effect.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

1: Cover, 2: Base, 3: Case, 4: Operation buttons,
5: Circuit board, 6: Waterproof packing, 7: Battery fixing cap,
8: Battery, 9: O-ring, 21: Battery fixing cap support,
30: Space contributing to buoyancy, 31: Electronic component housing, 32: Electronic component support,
40: Emergency key, 51: Antenna coil (electronic component),
71: Battery support part, 72: O-ring compression part.

Claims (8)

Cover and base constituting the outer shape of the main body of the portable device, a case arranged in the base, a circuit board supported by the case and mounted with electronic components, and overlapped between one side of the circuit board and the cover A waterproof packing, a battery fixing cap arranged between the base and the case, a battery held by the battery fixing cap and electrically connected to electronic components of the circuit board, The case has an electronic component storage portion, the antenna coil mounted on the circuit board is disposed in the electronic component storage portion, and a space that contributes to buoyancy to water is provided. The battery fixing cap has a cylindrical shape Alternatively, a battery support portion formed in a plurality of pillar shapes and an O-ring compression portion protruding in a cylindrical shape on the outer periphery thereof, and sandwiched between the base and the case, Provide water resistance to the area enclosed by the waterproof packing and the battery fixing cap, and contribute to the buoyancy to water between the surface of the battery opposite to the circuit board side and the battery fixing cap. In order to form a space to be formed by the battery fixing cap , the battery is supported by a cylindrical or columnar top of the battery support portion .   The portable device of the electronic key system according to claim 1, wherein the battery fixing cap is integrated with the base. 3. The electronic key system according to claim 1, wherein an electronic component support portion that supports the antenna coil mounted on the circuit board is provided in the electronic component storage portion provided in the case. Portable machine. 2. A support portion for the battery fixing cap is provided on the base, and an emergency key can be mounted in a space between the base and the case formed by the support portion of the battery fixing cap. Or the portable device of the electronic key system of Claim 3 . The base is detachable from the case, a fitting portion between the base and the case is non-waterproof, and the battery can be replaced by removing the battery fixing cap. 3. A portable device of the electronic key system according to any one of items 4 and 4 . The portable device of the electronic key system according to any one of claims 1 to 5 , wherein the battery is disposed near a center of a circuit board of the portable device body. The cover, the base and the case is a resin molded article, any one of claims 1 to 6, characterized in that using material having a low specific gravity of which relative to one or more components material with other parts materials A portable device of the electronic key system according to item 1. The portable device of the electronic key system according to any one of claims 1 to 7 , wherein the battery fixing cap is a resin material of a polymer alloy material.

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