JPS6040480A - Key cap - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a key for locking or unlocking doors, opening covers, etc. of buildings, vehicles, etc., and in particular, when locking or unlocking with the key, human body Concerning key caps suitable for protecting against static electricity shock.

Generally, when getting into a vehicle, a person Uη grasps a key with one hand, inserts it into the lock provided on the door of the vehicle, unlocks the door, and then opens the door and gets into the vehicle. . However, if a person with good conductivity unlocks the lock as described above while still being charged with static electricity for some reason, if the key is made of metal material, the key may be inserted into the door lock. Depending on the potential difference that occurs when opening the lock and a person's hand, Iruma often experiences an electrical shock due to the rapid transfer of static charge between that hand and the door lock.

In addition, this is not limited to vehicle door keys, but also locks on the lids of various openings in vehicles, building doors, etc.
This is also experienced when inserting the key into a shutter, a lock provided in an opening, etc.

The present invention has been developed in response to this problem, and its purpose is to suppress the gradient of potential difference caused by static electricity to the extent that it does not cause an electrical shock to the human body. Our goal is to provide key caps with a unique design.

In order to achieve such an object, the structural feature of the present invention is that a plate key formed of a metal material has a 2.5
The key is provided with a cap made of a conductive material having a resistance value of MΩ to 50 MΩ and detachably covering the gripping portion of the key.

Therefore, if the cap according to the present invention configured as described above is assembled to a locking key of a vehicle door, an opening cover, a building door, a shutter, or an opening cover, these doors, shutters, etc. When a person grasps the cap with the fingers of one hand and inserts the key into the lock of a door, shutter, cover, etc., the person is charged with static electricity. Even if the cap, the key, and the door, shutter, or lid are grounded, the resistance value of the cap suppresses the amount of transient transfer of static charge between the cap and the human body. The unlocking operation using the key described above can be performed with peace of mind without receiving an electrical shock to the user's body. Further, in the present invention, since the cap is removably attached to the key, the cap can be attached to an existing key, the cap can be used for a key with a shape similar to the key, and the cap can be replaced with a new one. It is convenient because it can be exchanged freely.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
In the figures and FIG. 2, a sixth key is attached to the vehicle door key 10.
A pair of cap members 21 and 22 that are assembled together to form the cap 20 are shown, respectively, as shown in the figure.

The key 10 is formed of a plate-shaped metal material with an insertion part 12 extending longitudinally from a grip part 11.
An elongated hole 1112 is bored at the tip of the tip. Both cap members 21 and 22 have a predetermined high resistance value (2,
5 MΩ to 50 MΩ) is injection molded into a plate shape from a conductive resin material (polypropylene containing 6% carbon by weight). A long hole 21a with an oblong cross section that overlaps with a long hole 2212 formed in the center and a pair of circular holes 221 formed on both sides of the long hole 22a at the tip of the inner surface of the cap member 22) , 22b
a pair of circular protrusions 21b and 211 that are respectively fitted into the
) is formed. Further, a recess 22C is formed on the inner surface of the cap member 22 except for the tip thereof, the contour of which includes the elongated hole 11a of the grip portion 11 of the key 10.

In this embodiment configured in this way, when assembling both cap members 21 and 22 to the key 10, the key 1
Canon outline of grip part 11 of 0.

The grip part 11 is fitted into the recess 22C in a state that matches the outline of the recess 221 of the member 22, and the canon is attached.

The inner surface of the member 21 is overlapped with the inner surface of the cap member 22 so as to sandwich the grip part 11, and both camp members 2
1. Pressing force is applied to each outer surface of 22 in directions facing each other, and each projection 211), 211) is formed in each circular hole 221, respectively.
), 221), the cap 2o can be easily and detachably attached to the key 10 as shown in FIG.

Note that at this time, the long holes 216 and 22a overlap each other.

When a person gets into a vehicle using the key 10 with the cap 20 assembled in this way, the person grasps the cap 20 with the fingers of one hand and presses the cylinder lock of the door in order to open the door of the vehicle. When inserting the insertion part of key 10,
Such a human body is one of those, camp 20. key 10
, the chassis is electrically grounded through the cylinder lock and door lock mechanism. Therefore, when a person is charged with positive static electricity, the static charge based on this positive static electricity passes through the fingers of one hand of the person and moves transiently to the camp 20, and then the key 10 and the cylinder It flows into the body of the vehicle through the lock and door lock mechanism.

At this time, the amount of transient movement of static charge from the human body to the cap 20 is suppressed by the high resistance value of the cap 20, and the gradient of the potential difference between the finger of the human hand and the cap 20 is kept small. , a person can safely press the key 10 without receiving an electrical shock due to the release of positively charged static electricity.
You can open the door and get into the vehicle by operating the button.

On the other hand, when the human body is chassis grounded as described above, if the human body is charged with negative static electricity, based on this negative static electricity, A positive electrostatic charge transiently flows through the door lock mechanism, the cylinder lock, the key 10 and the cap 20 into the fingers of one hand of the person. At this time, the amount of transient inflow of static charge from the cap 20 to the human body is suppressed by the high resistance value of the cap 20, and the finger of the human hand and the cap 2 are suppressed.
Since the slope of the potential difference with respect to 0 is maintained small, a person can safely open the door by operating the key 10 and get into the vehicle without receiving an electrical shock due to the neutralization of the negatively charged static electricity. can. In addition, as described above, when a person is charged with positive or negative static electricity, the contact area between the cap 20 and the finger is large, so the finger and the cap 2
The density of movement of electrostatic charges between 0 and 0 is reduced, and as a result, the gradient of the potential difference can be further reduced.

In addition, if you want to replace the cap 20 with a new one due to damage etc., each protrusion 21b, 211 of the cap portion 21
) and each circular hole 22b of the cap member 22.

After removing the key 10 by separating the cap members 21 and 22 from each other so as to release the respective fittings between the cap members 221 and 221), a new cap member is assembled to the key 10 in the same manner as described above. good.

Further, as described above, since the cap 20 can be attached to and removed from the key 10, the camp 20 can be easily attached to the key 10 even if the key 10 is already in use. The cap 20 can be used for a vehicle door key having a similar shape.

Next, a second embodiment of the present invention will be described. In FIGS. 4 to 7, a cap 6 is assembled to the key 10 described in the previous embodiment as shown in FIGS. 8 and 9.
The main cap member 61 and the auxiliary cap member 32 that make up 0 are shown.

The main cap member 61 is made of the conductive resin material and is formed into a flat cylindrical shape as shown in FIGS. The shape corresponds to the external shape of the gripping portion 11 so that the gripping portion 11 can be held in place. In such a case, the hollow part 3
The upper end opening 31b shown in 1.12 is the grip part 11 of the key 1D.
The lower end opening 31C of the hollow portion 3112 is slightly larger than the maximum cross-sectional shape in the width direction of the key 10.
It is somewhat larger than the maximum cross-sectional shape in the width direction of No. 2.

Further, in the main cap member 61, the upper end opening 311
) wall-shaped clamping portions 61d that extend upward in FIGS. 4 and 5 from the peripheral wall portion of the wall to face each other.

31 (1) are formed, and each of these clamping portions 61d.

Protrusions 31e and 31θ are formed outwardly on each peripheral wall portion of the upper end opening 51b located between the upper end openings 51b and 31a. The auxiliary cap member 62 is made of the same material as the material forming the main cap member 61 and has a sixth shape so as to be inserted and held between both the holding parts 31d and 31d of the main cap member 61.
The auxiliary cap member 62 is formed to have a shape as shown in FIG. /l are formed facing each other. In addition, in FIG. 5 and FIG. 7, the symbols 31f and 321) respectively indicate long holes, and both of these long holes 6
1f and filter 2b are designed to overlap when the auxiliary cap member 62 is inserted between the clamping portions 31a, 31a of the main cap member 61.

In this embodiment configured in this way, when assembling the main cap member 61 and the auxiliary cap member 62 to the key 10, the insertion portion 12 of the key 10 is inserted into the main cap member 6.
The hollow part 317 is inserted between the two clamping parts 31d and 31a of 1.
When the main cap member 61 is inserted into the main cap member 61 from the upper end opening 31b and pulled out through the lower end opening 31c, the grip portion 11 of the key 10 is accommodated in the hollow portion 61a of the main cap member 61. In this case, since the lower end opening 31C of the main cap member 61 is smaller than the shape of the grip portion 11, the grip portion 11 is reliably held within the hollow portion 31a. After that, the auxiliary cap member 62 is moved from the respective protrusions 32a, 32a to both gripping portions 3 of the main cap member filter 1.
1d and 31d, and engage the protrusions 61e and 1eiC of the main cap member 31 from the outside against the elasticity of the protrusions 32a and 32a, and the cap 60 is attached to the gear 10 as shown in FIG. As shown in FIG. 9, it can be easily and detachably assembled.

When a person gets into a vehicle using the key 10 with the cap 60 assembled in this manner, the person must grasp the cap 60 with the fingers of one hand and open the door of the vehicle, as in the previous embodiment. When a person inserts the insertion portion 12 of the key 10 into the cylinder lock of the door to open the door, the person is electrically grounded to the chassis through one hand, the cap 60, the key 10, the cylinder lock, and the door lock mechanism. Therefore, even if the human body is charged with either positive or negative static electricity, the amount of transient movement of the static charge between the human body and the cap 60 is suppressed by the high resistance value of the cap 60, and the finger of one hand of the human being is suppressed. Since the gradient of the potential difference between the cap 60 and the cap 60 is maintained small, a person can safely open the door by operating the key 10 and get into the vehicle without receiving an electric shock, as in the case of the previous embodiment. I can do it. Furthermore, when a person is charged with static electricity as described above, the contact area of the cap 60 with the finger is large, so the movement density of the static charge between the finger and the cap 60 becomes small, and as a result, the potential difference The slope can be made even smaller.

In addition, if you want to replace the camp 60 with a new one due to damage etc., each protrusion 326, 3 of the auxiliary cap member 62
2a against the elasticity of each protrusion 6 of the main cap member 61.
The auxiliary cap member 6 is separated from 1θ and 61e, respectively.
2 from between both the clamping parts 31J31d of the main cap member 61, and the key 10 from the hollow part 31a of the main camp member 61, attach a new main cap member and auxiliary cap member to the key 10 as described above. It can be assembled in the same way.

Further, as described above, since the cap 30 can be attached to and removed from the key 10, the cap 60 can be easily attached to the key 10 even if the key 10 is an existing one, and the cap 60 can be easily attached to the key 10 and has a similar shape to the key 10. The cap 60 can be used as a door key for other vehicles.

Next, the sixth embodiment of the present invention will be explained.
11 and 11, a cap 50 is shown which is assembled to a vehicle door key 40 as shown in FIGS. 12 and 16. The key 40 is formed of a plate-shaped metal material with an insertion part 42 extending longitudinally from a grip part 41, and a long hole 41a is bored at the tip of the grip part 41. The camp 50 is formed into a plate shape from the conductive resin material, and the cap 50 has a cutout 5.
1 is provided with a width that allows the grip portion 41 of the key 40 to be inserted therein. The key 40 is located on the inner surface of the cutout 51 of the cap 50.
12 and 16.
A protrusion 52 is provided at a position that engages with the elongated hole 41a of the grip portion 41 when inserted inside. Note that the reference numeral 56 indicates a long hole formed on the outer surface of the cap 50.

In the present embodiment configured in this manner, when assembling the camp 50 to the key 40, the grip portion 4 of the key 40 is
1 into the cut 51 of the cap 50 from its tip, and when the tip of the grip 41 reaches the protrusion 52, the grip 41 is further inserted into the cut 5 against the elasticity of the cap 50.
1 to engage the elongated hole 4112 with the protrusion 52, the cap 50 can be easily and detachably assembled to the key 40 (see FIGS. 12 and 16).

When a person rides a vehicle using the key 40 with the cap 50 assembled in this manner, the person grasps the cap 50 with the fingers of one hand, as in each of the above embodiments, and
When the insertion part 42 of the key 40 is inserted into the cylinder lock of this door in order to open the door of the vehicle, this person uses one hand, the cap 50 degree key 40, the cylinder lock and the door lock mechanism to connect the chassis electrically to the chassis ground. be done. Therefore, regardless of whether the human body is charged with positive or negative static electricity,
The amount of transient movement of the static load between the human body and the cap 50 is suppressed by the high resistance value of the cap 50, and the gradient of the potential difference between the finger of one hand of the human being and the cap 50 is maintained small. Therefore, a person can safely open the door by operating the key 40 and get into the vehicle without receiving an electric shock, as in the case of each of the embodiments described above. In addition, when a person is charged with static electricity as described above, the contact area of the cap 50 with the finger is large, so the movement density of the static charge between the finger and the cap 50 is small.
As a result, the gradient of the potential difference can be further reduced.

In addition, if you want to replace the cap 50 with a new one due to damage etc., insert the insertion part 42 of the key 40 into the elongated hole 4111+
After releasing the engagement between the cap 50 and the protrusion 52 and pulling it out from the cut 51 of the cap 50 against its elasticity, a new cap 50 may be assembled onto the key 40 in the same manner as described above.

Further, as described above, since the cap 50 can be attached to and removed from the key 40, the cap 50 can be easily attached to the key 40 even if the key 40 is an existing one, and the cap 50 can be easily attached to the key 40. The cap 50 can be used for an LJ-shaped vehicle key.

In the sixth embodiment, the protrusion 52 was provided on one inner surface of the cut 51 of the cap 50, but instead of this, as shown in FIG. 14 and WJ15, a protrusion 52 corresponding to the protrusion 52 of the cap 50 is provided. A through hole 54 is drilled in the portion where the grip portion 41 of the key 40 is inserted into the cut 51 of the cap 50.
After inserting the screw 55 (made of the above-mentioned conductive resin material), the screw 55 (made of the above-mentioned conductive resin material) is inserted through the through hole 54 and the elongated hole 41a of the grip part 41, and tightened to the nand 56 (made of the above-mentioned conductive resin material). Good too.

In addition, in each of the above embodiments, each cap is 20°30°
．． Although an example has been described in which both the caps 20 and 30.5 are made of conductive resin material, instead of this, each cap 20, 30.
0 may be formed from a conductive synthetic rubber material, and
The cap 20, 60, or 50 may be formed by applying a conductive paint to the surface of the gripping portion of the key 10 or 40, and in either case, the resistance value of each cap is 2.
It is sufficient if it is 5MΩ to 50MΩ.

Further, in the above embodiment, an example in which the present invention is applied to a door key of a vehicle has been described, but the present invention is not limited to this, and may include covers for various openings of a vehicle, doors of buildings, shutters, covers for various openings, etc. Even if the present invention is applied to a locking key, the same effects as in each of the embodiments described above can be achieved.

[Brief explanation of the drawing]

FIGS. 1 and 2 are front views of each cap member in the first embodiment of the present invention, and FIG. 6 is A-A in FIGS.
FIG. 4 is a side view of the main camp member in the second embodiment of the present invention, FIG. 5 is a front view of the same, and FIG. The figure is a side view of the auxiliary cap member in the second embodiment, FIG. 7 is a front view thereof, and FIG. 8 is a side view of the assembly of the main cap member and the auxiliary cap member to the key in FIGS. 4 to 7. FIG. 9 is a front view of the assembly, FIG. 10 is a side view of the cap in the sixth embodiment of the present invention, and FIG.
The figure is a front view of the same, Figure 12 is a side view of the cap assembling to the key in Figures 10 and 11, Figure 16 is a front view of the assembly, Figure 14 is the cap in Figures 10 and 11. An assembly side view of the modified example of the key, and the 15th
The figure is a front view of the assembly. Explanation of symbols 10.40...key, 11.41...grip, 20
．． 30.50...Cap, 21.22...Cap member, 61...Main cap member, 32...Auxiliary cap member. Applicant Nippondenso Co., Ltd. Agent Patent Attorney Teru Hase - Figure 1, 4. j 2nd rl! J B=l Figure 3 Figure 4 Figure 5WJ Figure 6 Figure 7m Figure 10 Figure 11 rlA Figure 12 Figure 13 Figure 14 Figure J115

Claims (1)

[Claims] 2.5MΩ in a plate key made of metal material
A key camp characterized in that a cap is provided which is made of a conductive material having a resistance value of ~50 MΩ and removably covers a gripping portion of the key.