JP2001140513A - Portable transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a circuit for checking key from being removed from a lower housing (or upper housing). SOLUTION: In a portable transmitter in which a transponder is stored inside a housing, a bottomed hole having a larger depth dimension than opening dimension and a slightly larger dimension than that of the transponder is drilled on a peripheral face of the housing, the transponder is stored in the bottomed hole, and the transponder is bonded on an inner wall face of the bottomed hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable transmitter provided with a transponder used to determine whether or not a key is a properly registered key when starting an engine, for example. .

[0002]

2. Description of the Related Art As a portable transmitter of this kind, there is one disclosed in Japanese Patent Application Laid-Open No. H11-2095, which will be described below with reference to FIGS.
That is, in FIGS. 8 to 13, reference numeral 1 denotes a resin holding portion of the portable transmitter, and the lower housing 2 and the upper housing 3 having the switch knob pressing windows 3a and 3b formed therein.
And a rubber sealing member 4
The keyless circuit 5 and the ID code generation circuit (transponder) 8 are housed in the rubber seal member 4.

[0003] A peripheral wall erected around the lower housing 2 is integrally formed with a base 7 a of the key plate 7.
As shown in FIGS. 9 and 11, the key plate 7 is fixed to the lower housing 2 with screws 9.

Next, the rubber seal member 4 will be described. As shown in plan views in FIGS. 11 and 13, the rubber sealing member 4 has a wall 4 a erected over the entire periphery, and a space surrounded by the peripheral wall 4 a is divided into two storage spaces by a partition wall 10. A and B are classified. The large storage space A has a keyless circuit 5
However, in the smaller storage space B, an ID code generation circuit 8 is stored. Further, the rubber sealing member 4
The switch knob pressing portions 4b and 4c are formed integrally with the bottom surface of the switch housing so as to face the switch knob pressing windows 3b and 3a provided in the upper housing 3, respectively.

After the keyless circuit 5 is stored in the storage space A and the ID code generation circuit 8 is stored in the storage space B, the switch knob pressing portions 4b and 4c are moved to the switch knob pressing windows 3b and 3a. The ID code generating circuit 8 is inserted into the lower housing 2 so as to face the same.
Of the key plate 7 is protruded at a position adjacent to a portion 7b of the base 7a of the key plate 7 having a short overhang. As a result, when the key plate 7 is inserted into a key cylinder (not shown) on the vehicle side, the ID code generation circuit 8
Can be received by the induction coil from the vehicle side coil. In addition, the code | symbol L in a figure is a center line.

[0006]

However, in such a portable transmitter, the ID code generation circuit 8 is only stored in the storage space A of the rubber seal member 4, so that the lower housing is used. 2 and upper housing 3
The ID code generating circuit 8 can be easily removed by releasing the connection with the above, which is not desirable for theft prevention. Therefore, the adhesive is usually applied to one of the inner wall surfaces of the lower housing 2 and the upper housing 3 using an adhesive, but the entire surface is exposed and visible, and only one surface is applied. Therefore, it is conceivable that the ID code generation circuit is peeled off, and it cannot be said that it is sufficient yet.

The present invention has been made in view of such a problem, and it is another object of the present invention to provide a structure in which the ID code generation circuit is difficult to remove from the lower housing 2 (or the upper housing 3).

[0008]

According to a first aspect of the present invention, there is provided a portable transmitter in which a transponder is housed in a housing.
On the peripheral surface thereof, a bottomed hole having a depth dimension longer than the opening dimension and having a size slightly larger than the transponder is formed, and the transponder is stored in the bottomed hole. It is assumed that.

A second invention is characterized in that the transponder according to the first invention is bonded to the inner wall surface of the bottomed hole.

According to a third aspect of the present invention, in the first or second aspect, the housing comprises an upper housing and a lower housing, and the bottomed hole is part of a side wall of one of the upper housing and the lower housing. Are commonly used as side walls.

According to a fourth aspect of the present invention, there is provided a lid body according to the third aspect, wherein a part of a side wall of one of the upper housing and the lower housing is extended, and the extended portion closes an opening of the bottomed hole. It is characterized by the following.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. Hereinafter, this embodiment will be described with reference to FIGS.
Explanation will be made based on the diagram shown in FIG. In FIGS. 1 to 7,
Reference numeral 20 denotes a resin gripping portion of the portable transmitter, which comprises an upper housing 22 and a lower housing 21 in which switch knob pressing windows 21a and 21b are formed. The peripheral portion of the rubber seal member 23 in the shape of a deep dish is sandwiched therebetween, and a keyless circuit 24 and an ID code generation circuit (transponder) 25
And are stored and held.

The lower housing 21 and the upper housing 22 have different heights H and S as shown in FIGS. 2 and 3, and the height H of the lower housing 21 is larger than that of the upper housing 22. The height 27 is set larger than the height S, and the base 27 of the key plate 26 is integrally formed with the lower housing 21 and is completely embedded and fixed.

Further, one of the corners of the peripheral wall of the lower housing 21 avoids the window 21b so that the opening dimension X (the longer dimension of the vertical and horizontal dimensions, these dimensions are the ID code generation circuit) 25 (slightly larger than 25) (the ID code generation circuit 2).
5 is set to be slightly longer than the length L), and the bottomed hole 40 is formed in the bottomed hole 40, and the ID code generation circuit is inserted into the bottomed hole 40 from the direction of the arrow as shown in FIGS. 25 is inserted and stored. At this time, an adhesive is applied to a portion beyond the half of the ID code generation circuit 25 (the portion where the tapered portion 25a is formed). Is larger, the adhesive can be inserted into the inner wall surface in the vicinity of the opening without adhering the adhesive.

The bottomed hole 40 is formed in parallel with the height direction (center line direction) L of the key plate 7, and the side wall of the bottomed hole 40 shares the side wall of the lower housing 21. The opening side of the side wall has an acute cross section as shown in FIG. That is, by forming the cross section at an acute angle, for example, when the tip of tweezers or the like is inserted into the bottomed hole 40, the acute angle portion is easily broken.

The bottomed hole 40 is formed with a slope 40a so that the inner part is narrower than the opening, and an adhesive (not shown) is spread on the slope 40a. When the ID code generation circuit 25 is inserted into the bottomed hole 40, an adhesive is applied to the tip half of the ID code generation circuit 25 (the portion where the slope 25a of the ID code generation circuit 25 is formed). You.

That is, the inclined surface 40a of the bottomed hole 40
The tip of the ID code generation circuit 25 is adhered to the inner wall surface of the bottomed hole 40 at the portion. In other words, the tip of the ID code generation circuit 25 and the bottomed hole 40
The space between the inner wall surface and the inner wall surface including the inclined surface 40a is filled with an adhesive and solidified. Plate-shaped special jig (not shown: a jig manufactured only for the purpose of unjustly removing the ID code generation circuit 25, such as a thin steel plate)
Is inserted into the gap where the adhesive has not been filled and solidified, but the slope 4
Since the front end of the jig does not enter along the inclined surface 40a along 0a, the ID code generation circuit 25 cannot be peeled off from the inclined surface 40a of the bottomed hole 40.

The upper housing 22 has a function as a lid for closing the opening of the lower housing 21, and a part of a peripheral portion of the upper housing 22 is extended to form an opening of the bottomed hole 40. Lid 2 to be closed
2a is integrally formed. When the upper housing 22 is fitted to the lower housing 21 so as to close the opening, the opening of the bottomed hole 40 is simultaneously closed by the lid 22a as shown in FIG. Things.

In FIG. 1, a key groove (not shown) is engraved on an exposed portion formed toward the tip of a part of a peripheral wall erected around the lower housing 21. A base 27 of a key plate 26 having an overall T-shape is formed of resin integrally with the lower housing 21, and the key plate 26 is fixed to the lower housing 21 by screws.

[0020]

As described above, according to the first aspect, the ID code generation circuit is stored in the deep bottomed hole, so that it is difficult to take out the ID code generation circuit and the anti-theft effect can be improved. There is.

According to the second aspect, since the ID code generation circuit is bonded and stored in the bottomed hole, it is more difficult to take out the ID code generation circuit, thereby improving the antitheft property.

According to the third aspect, when the ID code generation circuit is forcibly peeled off by sharing a part of the side wall of the housing as the side wall of the bottomed hole,
The peripheral wall surface of the housing is easily damaged, leaving traces of it, so that a third party can recognize it, and the anti-theft property can be further improved.

According to the fourth aspect, since the lid is integrally provided in the upper housing, the opening of the bottomed hole can be closed only by fitting the upper housing and the lower housing. Accordingly, the number of parts can be reduced, and there is an effect that it is not necessary to fit the lid into the opening of the bottomed hole.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of a lower housing 21 of a portable transmitter according to a first embodiment of the present invention.

FIG. 2 is a side view of the portable transmitter shown in FIG.

FIG. 3 is an explanatory sectional view taken along line AA of the lower housing 21 in FIG. 1;

FIG. 4 is an explanatory sectional view of a main part of the portable transmitter shown in FIG. 1 and a side view of an ID code generation circuit 25;

FIG. 5 is a sectional view taken along line BB of the lower housing 21 in FIG. 1 and a plan view of an ID code generation circuit 25.

6 shows an ID code generation circuit 2 in a bottomed hole 40 shown in FIG.
It is an explanatory view showing the state where 5 was inserted.

FIG. 7 shows an ID code generation circuit 2 in a bottomed hole 40 shown in FIG.
It is an explanatory view showing the state where 5 was inserted.

FIG. 8 is an external plan view of a conventional portable transmitter.

FIG. 9 is an explanatory view showing a state where an upper housing is removed from the portable transmitter shown in FIG. 8;

FIG. 10 is an explanatory view showing a state where a key plate is removed from the portable transmitter in FIG. 9;

FIG. 11 is an explanatory sectional view taken along line XX ′ of the portable transmitter in FIG. 8;

FIG. 12 is an explanatory plan view of the rubber seal member in FIG. 9;

13 is an explanatory side sectional view showing a state in which a circuit board having a keyless circuit and an ID code generation circuit mounted on a rubber seal member in FIG. 9 is incorporated.

[Explanation of symbols]

 Reference Signs List 20 Resin gripping part 21 Lower housing 21a, 21b Window 22 Upper housing 22a Lid 23 Rubber seal member 24 Keyless circuit 25 ID code generation circuit 25a, 40a Taper part 26 Key plate 40 Bottom hole

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Claims (4)

[Claims] 1. A portable transmitter in which a transponder is housed inside a housing, wherein the housing comprises:
On the peripheral surface thereof, a bottomed hole having a depth dimension longer than the opening dimension and having a size slightly larger than the transponder is formed, and the transponder is stored in the bottomed hole. And a portable transmitter. 2. The portable transmitter according to claim 1, wherein the transponder is bonded to an inner wall surface of the bottomed hole. 3. The housing comprises an upper housing and a lower housing, and the bottomed hole shares a part of a side wall of one of the upper housing and the lower housing as a side wall. The portable transmitter according to claim 1 or 2, wherein 4. A lid body which extends a part of a side wall of one of the upper housing and the lower housing, and closes the extension with an opening of the bottomed hole. A portable transmitter as described.