KR20140052575A

KR20140052575A - Playing card case

Info

Publication number: KR20140052575A
Application number: KR1020120118786A
Authority: KR
Inventors: 민병문
Original assignee: 민병문
Priority date: 2012-10-25
Filing date: 2012-10-25
Publication date: 2014-05-07

Abstract

The present invention is intended to prevent forgery and alteration of play cards such as playing cards and fighting cards, and to provide a card case for play that can easily be checked and noticed before the first opening or use of such cheating.
To this end, according to the present invention, a part of the outer circumferential side surface of the lower case is inserted into the inner circumferential side surface of the upper case so as to be in tight contact with each other, and an engagement hole is formed in the outer circumferential side surface of the lower case, And a breaking protrusion for breaking a part of the side surface of the lower case located at the upper portion of the latching hole to release the engagement between the latching hole and the latching protrusion when receiving an external force at a predetermined distance from the latching protrusion and the latching protrusion The card case is opened.

Description

Playing card case {Playing card case}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card case for a play, and more particularly, to a card case for a play, and more particularly, to prevent tampering or arbitrary operation of a play card such as a playing card, Card case.

In general, playing cards and playing cards are distributed and sold in a separate case packaged state.

Among these card cases, paper case is vulnerable to an external force, so that it is easily torn or damaged even when subjected to a small impact. Therefore, reusability and stability for preventing card damage are considerably lowered. Therefore, none. For this reason, a transparent synthetic resin casing made of hard plastic or the like is widely used.

As shown in FIG. 1, a conventional synthetic resin card case has a lower case 20 in which a card C accommodating groove 21 is formed, an upper case 20 which covers the opening of the lower case 20, (10) so that the user can freely open and close freely, and the playing cards such as playing cards and playing cards can be easily taken out or put back into the room.

Therefore, in various games using play cards, if you cheat or cheat, or if you have any other intentions, unpack the card or open it, and then use the special lens or infrared camera to identify the other player's card hand. There is a problem that it is easy to forge and manipulate the card without any opening or repackaging due to its structural limitations such that the non-visible ink can be easily displayed on the surface of the card to enable the card to be displayed.

Korean Utility Model Registration No. 20-0287077 (2002.08.27) Registered Utility Model No. 20-0461025 of the Republic of Korea (July 3, 2012) Korean Utility Model Publication No. 20-2009-0012190 (2009.12.02) Korean Patent Publication No. 10-2009-0111793 (2009.10.27)

Accordingly, the present inventor has focused on solving the above-mentioned problems and solving the problems, thereby preventing the forgery and falsification of play cards and arbitrary operations, The present invention was invented and perfected in the course of exemplary research with devoted efforts to develop the case.

Accordingly, an object of the present invention is to provide a card case which can be easily checked whether or not it is first opened.

Another object of the present invention is to provide a card case for preventing forgery and falsification of a play card and arbitrary manipulation thereof.

In order to solve the above-mentioned problems, a preferred aspect of the present invention is a method for manufacturing a semiconductor device, comprising the steps of: inserting a part of an outer circumferential side of a lower case (200) into an inner circumferential side surface of an upper case And a locking protrusion 110 is formed on an inner circumferential side surface of the upper case 100 so as to be engaged with the locking hole 210. The locking protrusion 110 When the external force is received at a predetermined distance from the fastening hole 110, a part of the side surface of the lower case 200 located at the upper portion of the fastening hole 110 is broken to release the fastened state of the fastening hole 110 and the fastening protrusion 210 And a protruding protrusion (120) formed on the protruding protrusion (120).

Accordingly, in the present invention, an external force must be exerted at the time of initial opening to release the engagement between the retaining hole and the engagement protrusion. At this time, the engagement recess or the engagement protrusion is deformed and ruptured and can not be restored to its original shape. It is possible to easily confirm easily and easily, and thereby, it is possible to prevent forgery and falsification of the play card and arbitrary manipulation by illegal intention.

Another embodiment of the present invention is such that the lower edge of the upper case 100 is in contact with the seating jaw 230 formed on the outermost upper edge of the lower case 200 to be engaged with the retaining hole 110, A gap is formed between the bottom edge of the upper case 100 and the seating jaw 230 of the lower case in the coupled state of the upper case 100 and the lower case 200, A blocking plate 140 may be formed on the outer peripheral surface to cover a gap between a bottom edge of the upper case 100 and an outermost upper edge of the lower case 200.

According to another embodiment of the present invention, there is provided an electronic device comprising: a main body 300 having an opened upper surface; a lid 400 having one side opened so that the upper surface of the main body 300 can be opened and closed by sliding engagement; A coupling groove 310 in which the upper plate side of the lid 400 facing the coupling groove 310 is inserted is formed on one inner circumferential side of the coupling groove 300 and a coupling hole 320 is formed in a side surface facing the coupling groove 310 And the engaging protrusion 410 is formed in the inner peripheral side of the cover 400 facing the retaining hole 320 so as to be engaged with the retaining protrusion 410. The engaging hole 320 and the engaging protrusion 410 are engaged with each other When it receives an external force from the state, it is deformed and ruptured and unbonded, so that it can be easily and easily confirmed whether or not it is first opened.

According to another embodiment of the present invention, a portion of the outer circumferential side of the lower case 600 is inserted into the inner circumferential side surface of the upper case 500 and is tightly coupled with the inner circumferential side surface of the upper case 500. At least one of the inner circumferential side surfaces of the upper case 500 A locking protrusion 610 is formed in the outer circumferential side surface of the lower case 600 so as to be engaged with the locking recess 510 in a corresponding manner and the inner circumferential side surface of the upper case 500 A lever 620 is protruded and formed on the side surface of the locking protrusion 610 facing the locking protrusion 610 to push the locking protrusion 610 inward to release the engagement with the locking recess 510, The lever groove 520 may be formed to expose the lever 620 to the outside of the upper case 500.

According to an aspect of the present invention, there is provided a game device including a card for a play, a holding hole for holding a state of engagement between the upper case and the lower case, Deformed and ruptured so that it can not be restored and recombined in its original shape, and the opening marks are left naturally so that the user can easily confirm whether or not the first opening is made before the game.

Accordingly, it is possible to prevent illegal act of unsealing the card case in advance for deceit such as forgery or arbitrary manipulation of the play card, thereby enhancing the reliability of the consumer for the product, have.

1 is a block diagram showing an example of a play card case according to the prior art.
2 is a side sectional view showing a state in which a play card case according to a first embodiment of the present invention is combined.
FIG. 3 is a side view showing a state in which a play card case according to a first embodiment of the present invention is disassembled. FIG.
FIG. 4 is a perspective view of a game card case according to a first embodiment of the present invention. FIG.
5 and 6 are a sectional view showing the state of use of the play card case according to the first embodiment of the present invention.
7 and 8 are partial sectional views showing another embodiment of a play card case according to the first embodiment of the present invention.
9 is a partial sectional view showing another embodiment of a play card case according to the first embodiment of the present invention.
10 is a three-dimensional perspective view showing a state in which a play card case according to a second embodiment of the present invention is disassembled.
11 is a side sectional view showing a state in which a play card case according to a second embodiment of the present invention is combined.
12 and 13 are a sectional view showing the state of use of the play card case according to the second embodiment of the present invention.
FIG. 14 is a perspective view showing a state of use of the play card case according to the second embodiment of the present invention. FIG.
15 is a side sectional view showing a state in which a play card case according to a third embodiment of the present invention is combined.
FIG. 16 is a side view showing a state in which a play card case according to a third embodiment of the present invention is disassembled. FIG.
FIG. 17 is a perspective view of a play card case according to a third embodiment of the present invention. FIG.
18 is a partial sectional view showing the state of use of the play card case according to the third embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described more specifically with reference to the accompanying drawings.

Prior to this, the following terms are defined in consideration of the functions of the present invention, and it is to be understood that these are construed in accordance with the technical idea of the present invention and interpreted in a way that is commonly or generally recognized in the technical field.

In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

Herein, the attached drawings are exaggerated or simplified in order to facilitate understanding and clarification of the structure and operation of the technology, and it is to be noted that each component does not exactly coincide with the actual size.

&Lt; Embodiment 1 >

2 to 4, the play card case according to the first embodiment of the present invention includes a lower side surface of the upper case 100, which functions as a cover of the cover, And a part of the upper outer circumferential side surface of the case 200 is inserted and tightly coupled with each other.

The bottom edge of the upper case 100 is formed to abut against and attach to a stepped seating step 230 formed on the outermost upper edge of the lower case 200.

That is, the upper edge of the lower case 200, which is narrower than the lower opening of the upper case 100, is inserted into the lower opening of the upper case 100, A gap is formed between the bottom edge of the upper case 100 and the seating jaw 230 of the lower case.

A hooking hole 210 is formed in at least one side of the outer circumferential side of the lower case 200. A hooking protrusion 110 is formed on the inner circumferential side of the upper case 100 to be fitted to the hooking hole 210, Are integrally formed.

The latching protrusion 110 and the latching hole 210 may be formed in a plurality of positions on either side of the upper and lower cases 100 and 200 at predetermined intervals, A plurality of holes may be formed at predetermined intervals.

For example, a locking protrusion 110 and a locking hole 210 are formed at a predetermined interval on either side of either side of the upper and lower cases 100, 200, respectively, and on the side opposite to the locking protrusion 110, It is possible to easily and easily prevent the engagement hole 110 and the engagement protrusion 210 from being damaged in the process of receiving and playing the card after the play card is received therein, Can be packed.

The hooking protrusion 110 can be easily coupled with the hooking hole 210 while releasing the coupled state between the upper case 100 and the lower case 200 so that the hooking protrusion 110 is naturally deformed and ruptured at the time of detachment, It is preferable to form it into a hook or wedge shape.

A breaking protrusion 120 is formed on the inner circumferential side surface of the upper case 100, that is, on the line where the locking hole 210 of the lower case 200 is positioned, with a predetermined distance from the locking protrusion 110.

When the external force such as a blow is received by the break protrusion 120, a part of the side surface of the lower case 200 located at the upper portion of the catch hole 110 is broken by a pressure or an impact force so that the engagement hole 110 and the engagement protrusion 210, As shown in FIG.

When the external force is received on the side surface of the lower case 200 located at the upper portion of the latching hole 210, the broken line 212 inducing the fastening and breaking of the latching hole 210 to be quick and easy, At least one may be formed.

An inclined surface 111 is formed on the lower surface of the locking protrusion 110 so as to minimize the contact interference when the lower case 200 is engaged with the lower case 200. In the upper surface of the locking hole 210, A guide surface 211 for guiding the user to descend naturally without contact with the engagement protrusion 110 when the case 100 receives an external force is formed.

The play card case according to the first embodiment of the present invention is manufactured by a molding method such as injection molding with a non-elastic hard material, and a play card is placed in the lower case 200 and is inserted into the upper case 100 5 and 6, when the user applies an external force such as a strong blow, pressure or impact force to the upper case 100, the upper case 100 and the lower case 200 The hooking hole 210 and the hooking protrusion 110 are naturally deformed and ruptured in the process of being released from the hooking hole 210 and the hooking protrusion 110, Recovery and reunion will not be possible and this will leave the traces of the unveiled traces intact so that the user can easily see if they will be the first to be released before the game Will.

Therefore, after the first opening, the trail remains as it is, and since it can not be repackaged, it is possible to obtain a special and advantageous effect to prevent unauthorized acts such as forgery and arbitrary manipulation of the play card in advance.

In addition, the fastening hole 210 and the locking protrusion 110 can be easily broken by a simple operation without any separate tool, so that the combined state of the upper case 100 and the lower case 200 can be quickly and easily released, .

7 and 8, when the engaging hole 110 and the engaging protrusion 210 are engaged for initial engaging, the upper case 100 may have an external force The upper case 100 and the lower case 200 may be separated from each other by at least one of an outer circumference of the upper case 100 and a lower case 200 in order to block a gap formed between the lower rim of the upper case 100 and the seating jaw 230 of the lower case, A blocking plate 140 may be further formed on the upper surface of the lower case 200 to cover the lower edge of the upper case 100 and the outermost upper surface of the lower case 200.

In this case, it is preferable that the lower case 200 is formed with an adhesive groove 240 so that the free end of the blocking plate 140 stably adheres to the first end of the barrier plate 140 during packaging and packaging.

The upper case 100 and the lower case 200 can be separated from each other by a predetermined distance from the lower case 200. Thus, the blocking plate 140 can completely block the gap between the bottom edge of the upper case 100 and the outermost upper edge of the lower case 200, It is possible to prevent insertion of a sharp tool or the like into the gap to separate the case 200 from the case 100. Thus, the case can not be opened without damaging the latching hole 110 and the latching protrusion 210. [

9, at least one connection ring 160 is formed at a predetermined interval on the side opposite to the side where the fastening hole 110 of the upper case 100 is formed, as shown in FIG. 9 The connection hole 260 may be formed on the side opposite to the side where the latching protrusion 210 of the lower case 200 is formed so as to maintain the coupled state with the connection ring 160. [

Therefore, not only can the combined state of the upper case 100 and the lower case 200 be further firmly and stably maintained, but also the playing cards are received in the inside of the upper case 100 and the lower case 200, It is possible to prevent the locking protrusion 210 from being damaged.

The connection ring 160 protrudes to the outside of the lower case 200 and is easily broken by a strong external force so that the upper case 100 and the lower case 200 can be separated more quickly and easily Of course, once it is opened, it can be restored and unreachable in its original form, making it easier to see if the user will be the first to open it before the game.

In the above description and the accompanying drawings, the locking protrusions 110 are formed on the inner circumferential side of the upper case 100 and the locking holes 210 are formed on the outer circumferential side of the lower case 200 facing the locking protrusions 110 However, it is needless to say that it is also possible to form a latching hole on the inner circumferential side surface of the upper case 100 and to form a latching protrusion on the outer circumferential side of the lower case 200 facing the latching case.

&Lt; Embodiment 2 >

10 and 11, the play card case according to the second embodiment of the present invention includes a main body 300 having an opened upper surface, and a main body 300 having a top surface of the main body 300, And a cover 400 having an opening at one side of the main body 300. An engaging groove 310 is formed at one side of the inner circumferential side of the main body 300 to engage the side of the upper plate of the lid 400 facing the engaging groove 400, And a locking protrusion 320 is formed on a side surface of the side cover 400 opposed to the locking protrusion 310 so as to be engaged with the locking hole 320, 410 are formed.

That is, a part of the outer circumferential side of the upper part of the main body 300, which holds the playing card, is inserted into the lower inner circumferential side of the cover 400 so that the bottom edge of the cover 400 is formed in a stepped shape on the outermost top surface of the main body 300 So as to be in close contact with the jaw portion.

In addition, the side of the main body 300 located at the upper portion of the latching hole 320 may be formed with at least one or more broken lines 321 which are easily deformed and ruptured when an external force is received.

Locking protrusions 330 are formed on both outer circumferential surfaces of the main body 300 in which the lid 400 is contacted or rubbed when slidingly inserted and pulled out. Locking protrusions 330 are formed on both inner circumferential surfaces of the lid 400, By forming locking grooves 430 which are in tight contact with the protrusions 330, it is possible to smoothly and stably perform the sliding operation when opening and closing the lid 400 with respect to the main body 300, So that it is possible to obtain an effect that it is not easily separated without being subjected to a strong external force.

It is preferable that the concave and convex portions 450 are formed on the outer circumferential side surfaces of the cover 400 on both sides so that the grip 400 can be more stable and easy to grip without slipping with one hand at the time of opening and closing the cover 400 with respect to the main body 300.

The locking protrusion 410 can be easily inserted when the coupling protrusion 410 is engaged with the locking hole 310. The locking protrusion 410 is released from the coupling state between the main body 300 and the lid 400 so that the locking protrusion 410 is naturally deformed and ruptured during separation, It is preferable that the surface facing the engaging hole 320 is formed into a slanted hook shape so that recombination can not be performed.

It is also preferable that the upper surface of the latching hole 320 facing the latching protrusion 410 be inclined so that the latching protrusion 410 can be inserted into the latching hole 320 more smoothly and easily.

As shown in FIGS. 12 to 14, the play card case according to the second embodiment of the present invention includes a main body 300 having a latching hole 320 formed therein, The latching hole 320 which keeps the coupling state with the main body 300 while the cover 400 is opened by the sliding movement must be forcefully applied such as pressing or strongly hitting the side of the cover 400 in the closing direction, The hooking hole 320 and the hooking protrusion 410 are naturally deformed and ruptured in the process of releasing the hooking state between the hooking hole 320 and the hooking protrusion 410. As a result, It is easy to see whether or not the user will be first to open the game before the game.

Therefore, after the first opening, since the traces remain as they are, they can not be repackaged. Therefore, special effects such as forgery and manipulation of play cards and arbitrary operations can be prevented in advance.

In addition, the fastening hole 320 and the locking protrusion 410 can be easily broken by a simple operation without any separate tool, so that the combined state of the main body 300 and the lid 100 can be quickly and easily released, .

&Lt; Third Embodiment >

First, among the constituent elements of the third embodiment of the present invention, the same reference numerals as those of the first embodiment are used and those repetitive and detailed explanations are omitted.

15 to 17, a play card case according to a third embodiment of the present invention includes a lower case 500 which is a function of a cover and an inner circumferential side surface of a lower opening of the upper case 500, And a part of the upper outer circumferential side surface of the case 600 is inserted and tightly coupled with each other.

The bottom edge of the upper case 500 is formed to be in contact with a stepped seating step 630 formed on the outermost upper edge of the lower case 600.

The upper case 500 has an engaging groove 510 formed on at least one side of the inner circumferential side of the upper case 500 and a locking protrusion 610 And the locking protrusion 610 is pushed into the lower case 600 to the side of the locking protrusion 610 facing the inner circumferential side surface of the upper case 500 to be engaged with the locking recess 510 And a lever groove 520 is formed in the upper case 500 so that the lever 620 passes through the upper case 500 without contact interference and is exposed to the outside of the upper case 500 .

The lower part of the locking protrusion 610 is formed in a slot shape like a notch so as to guide the deformation and rupture of the locking protrusion 610 when receiving an external force. A cutout groove 612 is formed in a part of the side surface of the case 600 so as to facilitate deformation and tearing around the rupture induction groove 611. [

That is, the breakage inducing groove 611 is formed between the protrusion protruding in correspondence with the latching groove 510 of the upper case and the seating protrusion 640 of the lower case 600, so that the latching protrusion 610 is engaged with the lever 620 So that it can be smoothly ruptured while natural deformation is caused by the rupture induction groove 611.

In addition, the incision groove 612 guides a slight elastic deformation when the engaging projection 610 is engaged with the engaging groove 510, and is easily deformed and ruptured when receiving an external force.

A plurality of locking protrusions 610 may be formed on either one of the upper and lower cases 500 and 600 at predetermined intervals and the locking protrusions 610 may be formed on the one side of the upper and lower cases 500, It is preferable to form the wedge or hook so that the upper case 500 and the lower case 600 are released from the coupled state while being separated from each other and can not be naturally deformed and ruptured and can not be reused for the rearmost bar.

As shown in FIG. 18, the play card case according to the third embodiment of the present invention has a structure in which the lever 620 is hammered in an initial loading and packaging state, or an external force such as a pressure or an impact force is applied to the lever 620 The engagement between the engaging groove 510 and the engaging projection 610 that maintains the engaged state of the upper case 500 and the lower case 600 is required only when the urging stopper 610 is pushed strongly toward the inside of the lower case 600, In this process, the locking protrusion 610 is naturally deformed and ruptured, so that it can not be restored and recombined in its original shape. In this case, since the opened traces remain unchanged, It is easy to see whether or not it is.

Therefore, after the first opening, the traces remain as they are, and since they can not be repackaged, special effects such as forgery and falsification of play cards and arbitrary operations can be prevented in advance.

In addition, since the engaging groove 510 and the engaging projection 610 can be easily broken by a simple operation without a separate tool, the fastening state of the upper case 500 and the lower case 600 can be quickly and easily released, .

In the above description and the accompanying drawings, the latching groove 510 is formed on the inner circumferential side surface of the upper case 500 and the latching protrusion 610 is formed on the outer circumferential side of the lower case 600 facing the latching groove 510 However, it is also possible to form a locking protrusion on the inner circumferential side surface of the upper case 500, and a locking groove may be formed on the outer circumferential side surface of the lower case 600 opposite to the locking protrusion.

9, at least one connection ring 160 is integrally formed on the side of the upper case 100 opposite to the side where the engagement hole 110 is formed, and the connection ring 160 is formed so as to correspond to the connection ring 160 The upper and lower cases 500 (500) according to the third embodiment of the present invention may be formed so that the coupling holes 260 are formed on the side opposite to the side where the engaging protrusions 210 of the lower case 200 are formed, ) 600 as shown in FIG.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments or constructions. Various changes and substitutions may be made without departing from the spirit and scope of the invention. It will be apparent to those skilled in the art that changes may be made in the embodiments without departing from the spirit and scope of the invention. Accordingly, it is to be understood that modifications and variations of the features of the present invention are intended to be included within the scope of the present invention.

100: upper case 110:
111: sloped surface 120:
140: blocking plate 160: connecting ring
200: lower case 210: latching hole
211: guide surface 212: broken line
230: mounting chin 240: tight contact groove
260: Connection hole
300: main body 310: engaging groove
320: latch hole 321: broken line
330: locking protrusion 400: cover
410: locking protrusion 430: locking groove
500: upper case 510: latching groove
520: lever groove 600: lower case
610: locking protrusion 611: breaking guide groove
612: incision groove 620: lever

Claims

A play card case in which a part of the outer circumferential side of the lower case (200) is inserted into the inner circumferential side surface of the upper case (100)
A hooking hole 210 is formed on an outer circumferential side surface of the lower case 200. A hooking protrusion 110 is formed on an inner circumferential side surface of the upper case 100 to be fitted to the hooking hole 210, When the external force is received at a predetermined distance from the fastening hole 110, a part of the side surface of the lower case 200 located at the upper portion of the fastening hole 110 is broken, And a breaking protrusion (120) for releasing the folding protrusion (120).

The method according to claim 1,
And at least one broken line (212) is formed on the side surface of the lower case (200) located above the latching hole (210) to induce deformation and rupture when an external force is received.

The method according to claim 1,
The inclined surface 111 is formed on the lower surface of the locking protrusion 110 so as to minimize contact interference and when the locking protrusion 110 receives an external force on the upper surface of the locking hole 210 facing the locking protrusion 110, And a guide surface (211) for guiding the guide surface (211).

4. The method according to any one of claims 1 to 3,
The bottom edge of the upper case 100 is in contact with the seating jaw 230 formed on the outermost upper edge of the lower case 200. When the holding hole 210 is engaged with the holding hole 210, A gap is formed between the bottom edge of the upper case 100 and the seating jaw 230 of the lower case,
A cover plate (not shown) for covering a gap between a bottom edge of the upper case 100 and an outermost upper edge of the lower case 200 is formed on an outer circumferential surface of one of the upper case 100 and the lower case 200 140) is further formed.

And a lid 400 having one side opened so that the upper surface of the main body 300 can be opened and closed by sliding engagement,
An engaging groove 310 is formed in the inner circumferential side surface of the main body 300 and an upper plate side of the lid 400 facing the engaging groove 310 is inserted. Is formed,
A locking protrusion 410 is formed on the inner peripheral side surface of the cover 400 facing the retaining hole 320,
Wherein the engaging hole (320) and the engaging protrusion (410) are deformed and ruptured when the external force is received in the engaged state, thereby releasing the card case.

6. The method of claim 5,
(321) for guiding the side surface of the main body (300) located above the retaining hole (320) to be deformed and ruptured when an external force is received.

6. The method of claim 5,
A locking protrusion 330 is formed on the outer circumferential sides of both sides of the main body 300 and a locking groove 430 is formed in the inner circumferential side of both sides of the lid 400 so as to be in tight contact with the locking protrusion 330 Card case.

A play card case in which a part of an outer circumferential side of a lower case (600) is inserted into an inner circumferential side surface of an upper case (500) and is tightly coupled to each other,
A locking recess 510 is formed on at least one side of the inner circumferential side surface of the upper case 500 and a locking protrusion 610 which is engaged with the locking recess 510 in the outer circumferential side of the lower case 600, Is formed,
A lever 620 for pushing the locking protrusion 610 into the side of the locking protrusion 610 facing the inner circumferential side surface of the upper case 500 to release the engagement with the locking protrusion 510, And a lever groove 520 is formed in the upper case 500 such that the lever 620 passes through the lever case 520 and is exposed to the outside of the upper case 500. [

9. The method of claim 8,
A lower end of the locking protrusion 610 is provided with a rupture inducing groove 611 for guiding the rupture inducing groove 611 to deform and rupture when receiving an external force, And a cutout groove (612) for facilitating deformation and tearing of the locking protrusion (610) about the rupture induction groove (611).