KR101974375B1 - Safety device of electric equipment in apartment building - Google Patents

Abstract

The present invention relates to a safety device of electric equipment in an apartment building, comprising: a rectangular case forming electric wire penetration holes on both sides for lead-in and lead-out of electric wires; a distribution fixating panel formed of rubber or silicon between a support panel installation space and first member installation grooves and having second member installation grooves, in which hollow rubber shock absorbing members are mounted, to be spaced apart; a distribution board support panel forming support protrusions along an inner side in a fixation installation groove and having a distribution board fixture with a hollow shape for fixating a distribution board; a connection rod installing a packing between spiral coupling units; and an upper and a lower shock absorbing units installing side shock absorbing members, formed of rubber or silicon, along a circumference of an edge. The present invention can prevent damage to the distribution board due to vibration generated in the apartment building and can also solve a problem of electric wire disconnection.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a safety device for an apartment house,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an electric facility for a residential home, and more particularly, to a safety device for an electric facility for a residential home that can prevent breakage of a distribution board due to vibration generated in the residential house.

In general, the distribution board is a power distributor that distributes and supplies the supplied power to various loads, and a short circuit to prevent a safety accident caused by electricity by promptly shutting off an abnormal condition such as an overload shortage by detecting a voltage state supplied to the load A circuit breaker for selectively interrupting a load on the load side, and a watt hour meter for measuring the total amount of electric power used for a certain period of time, are embedded in the wall at the time of building construction.

Therefore, the conventional distribution panel is buried in the upper part of the wall at the time of building construction and its position is fixed. Therefore, when the user's key is small, it is inconvenient to check and operate the watt hour meter and the breaker installed in the distribution board.

As is known from the prior art, the flange portion of the first bracket is welded to the side surface of the terminal box, and the mounting hole formed in the horizontal portion of the first bracket The left wing portion is brought into close contact with the inner surface of the horizontal portion of the first bracket and the right wing portion of the second bracket is engaged with the reinforcing bars of the second bracket, And are connected by an additional screw.

However, in the conventional terminal box fastener, when the reinforcing bars vertically disposed on the left and right sides of the terminal box are inclined, the terminal box is fixed with an inclination or incomplete mounting, and the terminal box moves when the concrete is laid, Can not be provided.

In addition, since the fastener for fixing the terminal box has a complicated structure that must be manually installed by the operator, the time required for the installation work is long and the efficiency of the work is deteriorated.

Patent Document 2 (Patent Document 10-0933288) discloses a structure in which upper and lower fixing members are coupled to upper and lower sides of an electric distribution box, respectively, and left and right flows of an electric distribution box are combined with upper and lower fixing members, And a side fixing member is coupled to the left and right sides of the electric distribution box and the side fixing member is supported by the vertical supporting portions for side fixing so that the electric distribution box can be always kept in a stable state The upper and lower fixing members, the side fixing members, and the back surface fixing members are joined to the electric distribution box, and then the base supporting members are coupled to the vertical supporting horizontal supporting portions and the side fixing vertical supporting portions, The fixing means is automatically operated to fix the back surface fixing member, so that the installation is easy. However, cracks occur in the apartment house (deterioration, Earthquake, etc.), there is a problem that the power supply due to the disconnection is disrupted because the power distribution box can not be maintained in the installed state.

Korean Patent Publication No. 10-2005-0075057 Korean Patent Publication No. 10-0933288

SUMMARY OF THE INVENTION It is an object of the present invention to provide a safety device for an electric installation for a residential house that can prevent breakage of a distribution board due to vibration generated in a residential house.

In addition, it is also possible to minimize the impact and vibration transmitted in the vertical direction through the space between the viscous buffer member, the rubber buffer member and the distribution panel support panel, and to transmit the vibration transmitted through the panel support plate in the horizontal direction And it is an object of the present invention to provide a safety device for electrical equipment for a residential house that can minimize impact and vibration transmitted.

A safety device for an electrical installation for a dwelling according to an embodiment of the present invention includes a case mounting space formed therein and a door for opening or closing the mounting space is mounted at a front side thereof and a wire for opening / A case having a rectangular shape in which a through hole is formed; A support panel mounting space formed in the mounting space of the case, the support panel mounting space being formed at a rear surface of the case and having a panel mounting groove formed at an upper portion and a lower portion with a gap therebetween, Wherein a first member mounting groove on which a viscous buffer member having a viscosity along the periphery is mounted is formed with a space therebetween, and between the support panel mounting space and the first member mounting groove is formed rubber or silicon, And a second member mounting groove on which the second member mounting groove is mounted; A panel mounting groove having an engaging fixing member is formed at the upper and lower ends corresponding to the panel mounting groove, and the fixing groove is formed in the fixing mounting groove of the fixed mounting panel, A distribution board support panel on which a support board protrusion is formed along the inner surface and a hollow panel board fixture for fixing the distribution board is mounted; One end of a spherical shape is coupled to the coupling fastener of the panel coupling groove constituting the support panel mounting space and the other end of the spherical coupling is coupled to the coupling fastener of the panel coupling groove constituting the distribution panel support panel, A spiral coupling portion is formed so as to be adjustable in length while being cut, and a connecting rod to which a packing is mounted between the spiral coupling portions; A first support plate having a support groove formed at an upper portion thereof and a second support plate having a plate-shaped support groove formed at an upper portion of the support plate, And an upper and a lower buffer means mounted between the first and second support plates and equipped with a vibration damping portion composed of a plurality of coil springs and leaf springs, .

In addition, a spacing adjuster is installed at intervals so as to prevent eccentricity from being formed on the back surface of the case,

Wherein the spacing adjusting member comprises: a rectangular box-shaped adjusting case having a receiving space formed therein and one side opened; A rotation shaft mounted on the adjustment case; An eccentric actuating part which rotates about the rotation axis, one side of which is accommodated in the accommodating space of the adjusting case and the other side of which protrudes outward; And a buffer member mounted on the outer surface of the eccentric operation tool and formed of rubber or silicone.

In addition, fixing means fixed to the wall surface of the structure at intervals along the outer surface of the case are mounted,

Wherein the fixing means comprises: a stationary case mounted along the outer surface of the case and communicating with the inside of the case; A fixture disposed in the mounting space of the fixing case and having a fixing protrusion having an arrowhead or a triangular shape at an end; An operating rod having one end coupled to the fixture and the other end disposed in the case mounting space of the case and having a spiral formed on the outer surface thereof; An adjusting screw which is spirally engaged with the operating rod located in the case mounting space of the case and adjusts the operating length of the operating rod; And a pressure spring mounted between the stationary case and the fixture.

The safety device for electrical equipment for apartment houses according to the present invention can prevent breakage of the distribution panel due to vibration generated in the apartment house and solve the problem of disconnection of the electric wires accordingly.

In addition, the safety device for electrical equipment for apartment houses according to the present invention minimizes shock and vibration transmitted in the vertical direction through the space between the viscous buffer member, the rubber buffer member, and the distribution panel support panel And the impact and vibration transmitted in the horizontal direction through the panel support plate mounted on the back surface can be minimized.

1 is a perspective view showing a safety device of an electrical installation for a residential house according to the present invention;
2 is a perspective view showing a case constituting a safety device for an electrical installation for a dwelling house according to the present invention;
FIG. 3 is an exploded perspective view showing a distribution fixing panel, a distribution board support panel, a connecting rod, and upper and lower buffering means constituting a safety device for an electrical installation for a dwelling house according to the present invention.
4 is an exploded perspective view showing a damping fixing panel and a buffer member constituting a safety device for a dwelling house electrical equipment according to the present invention.
FIG. 5 is a front sectional view showing a distribution board support panel and a connecting rod constituting a safety device for an electrical installation for a dwelling house according to the present invention. FIG.
6 is a cross-sectional view showing an upper and a lower damping means constituting a safety device for an electrical installation for a dwelling house according to the present invention;
7 and 8 are views showing another embodiment of a safety device for electrical equipment for a dwelling house according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. And is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined by the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that " comprises, " or " comprising, " as used herein, means the presence or absence of one or more other components, steps, operations, and / Do not exclude the addition.

1 is a perspective view illustrating a safety device for an electrical installation for a dwelling house according to the present invention. FIG. 2 is a perspective view of the electrical equipment for a dwelling house according to the present invention. Fig. 3 is an exploded perspective view showing a distribution fixing panel, a distribution board support panel, a connecting rod, and upper and lower buffering means constituting a safety device for an electric installation for a dwelling house according to the present invention. 4 is an exploded perspective view showing a damping fixing panel and a damping member constituting a safety device for a dwelling house electrical equipment according to the present invention. Fig. 5 is a perspective view of a dwelling house support panel constituting a safety device of the dwelling house electrical equipment according to the present invention, Fig. 6 is a sectional view showing the upper and lower buffer means constituting the safety device of the electric equipment for a dwelling house according to the present invention. Nancy is a cross-sectional view.

The safety device 100 of the present invention includes a case 200, a distribution fixing panel 300, a distribution board support panel 500, a connecting rod 600, and upper and lower buffering means 700.

The case 200 is mounted in a space provided on the wall surface of the structure.

Here, the size and shape of the case 200 may be variously changed according to environment, purpose, etc. In the present invention, the case 200 is formed in a rectangular box shape.

The case 200 has a case mounting space 220 formed therein and a door 240 for opening or closing the mounting space 220 is mounted on the front side of the case 200. A wire A through hole 260 is formed.

That is, the case 200 is formed in a rectangular box shape, and the door 240 is rotatably mounted on the front side so that the inside can be opened or closed. On both sides of the door 200, the electric wire connected to the distribution board 10, Through holes 260 are formed.

The wire fixing hole 280 is formed in the wire through hole 260 so as to fix and support the electric wire. The wire fixing hole 280 is formed with an engagement groove 282 along the outer circumference, And a pressurizing ball 284 selectively mounted on the fitting engagement groove 282 of the fixture body 281. The fixture body 281 may be formed of a metal plate.

The stationary fixed panel 300 is disposed on the rear surface of the case 200 while being disposed in the mounting space 220 of the case 200.

Here, the fixed and fixed panel 300 is fixed to the rear surface of the case 200 through a known bolting or fitting.

In addition, a support panel mounting space 310 is formed in the pertinent fixed panel 300. The support panel mounting space 310 is formed with a panel mounting groove 312 having a mounting fixture 420 at an upper portion and a lower portion at the center, A first member mounting groove 320 in which a viscous cushioning member 440 having a viscosity along the circumference is spaced outwardly of the space 310 is formed at an interval and the support panel mounting space 310, A second member mounting groove 330 formed of rubber or silicone and having an inner hollow rubber buffer member 460 is formed at an interval between the first member mounting grooves 320 and a rubber or silicon panel A support plate 340 is mounted.

The panel 300 includes a panel support plate 340 attached to the rear surface of the case 200 and a support panel mounting space 310 formed at the center of the panel mounting space 312 A second member mounting groove 330 on which the rubber buffer member 460 is mounted and a first member mounting groove 320 on which the viscous buffer member 440 is mounted are spaced apart from the panel mounting space 310, Thereby minimizing the transmission of external vibrations or impacts to the interior.

In addition, the secondary fixed panel 300 is vertically transmitted through a space between the viscous cushioning member 440 mounted inward from the outside and the rubber buffer member 460 and the distribution panel supporting panel 500 Shock and vibration are minimized, and shocks and vibrations transmitted in the horizontal direction through the panel support plate 340 mounted on the rear surface are minimized.

Here, the engaging fixture 420 to be mounted on the panel engaging groove 312 includes a fixture body 421 having a hollow interior and opened at one side thereof, and a part of the fixture body 421 mounted inside the fixture body 421, Shaped fastener 422 is formed.

The distribution panel support panel 500 is disposed in the support panel mounting space 310 of the stationary fixed panel 300.

A panel mounting groove 520 is formed at the upper and lower ends of the panel support panel 500. The panel fixing groove 510 is formed at the center of the panel support panel 500, And a hollow protrusion 530 is formed along the inner surface of the fixed mounting groove 510 and a hollow panel board fixture 530 for fixing the panel board 10 is mounted.

That is, the distribution panel support panel 500 is formed with a fixed mounting groove 510 at its center, and the stationary mounting groove 510 is provided with a distribution board fixture 530 formed with a support protrusion 532, .

The panel coupling grooves 520 formed at the upper and lower ends of the distribution panel support panel 500 are formed at positions corresponding to the panel coupling grooves 312 of the support panel mounting space 310, Respectively.

The connection rod 600 has a predetermined length and connects the distribution fixing panel 300 to the distribution panel support panel 500.

One end 610 of the spherical shape is coupled to the coupling fixture 420 of the panel coupling groove 312 constituting the support panel mounting space 310 and the other end of the spherical end 620 Is coupled to the coupling fixture 420 of the panel coupling groove 520 constituting the distribution board support panel 500 and a spiral coupling portion 630 is formed to adjust the length of the central portion while being cut, A packing 640 is mounted between the upper and lower parts 630 and 630.

That is, the connecting rod 600 is adjusted in length through the spiral coupling part 630 according to the interval between the fixed panel 300 and the panel board support panel 500, And the other end of the spherical shape is coupled to the engaging fixture 420 of the panel engaging groove 520.

The upper and lower cushioning means 700 are closely attached to the case 200 while being disposed on the upper and lower portions of the damping and fixing panel 300.

Here, the upper and lower cushioning means 700 are fixed to the case 200 through a known bolting or fitting.

The upper and lower cushioning means 700 includes a first support plate 710 having a support groove 712 formed at an upper portion thereof and a second support plate 720 having a support groove 722 formed at a lower portion thereof, A vibration damping portion 730 composed of a plurality of coil springs 732 and a leaf spring 734 is mounted between the first and second support plates 710 and 720, A side buffer member 740 formed of rubber or silicon is mounted.

That is, the upper and lower cushioning means 700 may be constructed such that a plurality of coil springs 732 and a leaf spring 734 are mounted at intervals in the support groove 712 of the first support plate 710, A second support plate 720 having a support groove 722 formed on an upper portion of the first support plate 730 and a side buffer member 740 attached to an edge of the first and second support plates 710 and 720.

Next, the safety device 100 of the electrical equipment for a residential area can be constructed as shown in Figs. 7 and 8.

7 shows an example in which a gap adjusting member 800 is installed at intervals so as to prevent eccentricity from being formed on the back surface of the case 200. In this case,

That is, the safety device 100 of the electrical equipment for a residential home can prevent the case 200 from being eccentrically positioned by a plurality of spacing control holes 800.

The spacing adjuster 800 includes a rectangular box-shaped adjustment case 810 having a receiving space 812 formed therein and having one side opened, a rotation shaft 820 mounted on the adjustment case 810, An eccentric operation member 830 rotatably operated around the center of the eccentric operation member 820 and accommodated in the accommodation space 812 of the control case 810 and the other surface of which protrudes outward; Or a buffer member 840 formed of silicon.

That is, the gap adjusting member 800 prevents eccentricity of the case 200 through the eccentric operation member 830 that rotates eccentrically about the rotating shaft 820.

8 shows an example in which the fixing means 900 is fixed to the wall surface of the structure at intervals along the outer surface of the case 200. [

In other words, the case 200 can be fixed to the wall of the structure by mounting the fixing means 900 along the outer surface of the case 200.

The fixing means 900 includes a fixing case 910 mounted along the outer surface of the case 200 and communicating with the inside of the case 200, a fixing case 910 disposed in the mounting space 912 of the fixing case 910, The fixture 920 has one end connected to the fixture 920 and the other end positioned in the case mounting space 220 of the case 200. The other end is connected to the outer surface of the fixture 920, An adjusting screw 940 spirally coupled to the operating rod 930 located in the case mounting space 220 of the case 200 and adjusting the operating length of the operating rod 930, And a pressing spring 950 mounted between the fixing case 910 and the fixture 920.

That is, the fixing means 900 presses the operating rod 930 to fix the fixing protrusion 922 of the fixing tool 920 to the wall surface of the structure, and then the adjusting screw 940 of the operating rod 930 is moved to the position And fixes the position of the operating rod 930 and the fixture 920. In this case,

Hereinafter, an embodiment of a safety device for an electric facility for a residential home constructed as described above will be described.

A door 240 for opening or closing the mounting space 220 is mounted on the front side of the case mounting space 220. A wire through hole 260 is provided on both sides of the case mounting space 220, The case 200 having a rectangular shape is formed.

A support panel mounting space 310 is formed in the rear surface of the mounting space 220 constituting the case 200. The support panel mounting space 312 is formed with a panel mounting groove 312, A first member mounting groove 320 on which a viscous cushioning member 440 having a viscosity is formed is spaced apart from the support panel mounting space 310 and spaced apart from each other, A second member mounting groove 330 is formed between the panel mounting space 310 and the first member mounting groove 320 and is formed of rubber or silicone and has an inner hollow rubber buffer member 460 mounted thereon. The fixing panel 300 is mounted.

A fixed mounting groove 510 is formed at the center of the supporting panel mounting space 310 constituting the divided fixed panel 300. The upper and lower ends corresponding to the panel mounting groove 312 are provided with fixing holes A fixing board 510 having a fixing protrusion 532 formed along the inner surface thereof and a hollow panel board fixture 530 for fixing the panel board 10, The panel support panel 500 is mounted.

One end 610 of a spherical shape is coupled to an engagement fastener 420 of the panel engagement groove 312 constituting the support panel mounting space 310 and the other end 620 of the spherical shape is coupled to the distribution panel support panel And the spiral coupling portion 630 is formed so as to be adjustable in length while the central portion thereof is cut off and the spiral coupling portion 630 is inserted into the space between the spiral coupling portions 630, A connecting rod 600 on which the packing 640 is mounted.

Next, a first support plate 710 having upper and lower support grooves 712 formed on the upper and lower sides of the pre-fixed panel 300 and a second support plate 710 having a plate- A vibration damping portion 730 composed of a plurality of coil springs 732 and a leaf spring 734 is mounted between the first and second support plates 710 and 720, And the upper and lower cushioning means 700 on which the side cushioning member 740 formed of rubber or silicone is mounted, the assembling of the safety device 100 for the cushioning electrical equipment is completed.

Here, it is understood that the assembling procedure of the safeguard apparatus of the electrical appliance for a residential home can be performed differently from the above.

Next, an embodiment of the safety device 100 for the electrical equipment for a residential area will be described.

First, after inserting the safety device 100 of the electrical equipment for a dwelling unit into a space provided on the wall surface of the dwelling unit, the level of the safety device 100 of the dwelling electrical equipment is adjusted, Thereby securing the safety device 100 to the wall surface of the structure.

After the distribution board 10 is mounted inside the panel fastener 530 constituting the distribution panel support panel 500, the distribution panel 10 is passed to the both sides of the distribution panel 10 through the through-hole 260 of the case 200 After connecting the drawn wires, the door 240 is rotated to close the case mounting space 220.

At this time, the distribution board 10 can be fixed to the panel support panel 500 through a known bolting structure as well as fixed through the support protrusions 532 of the panel fastener without a separate fixture.

When the external vibration is transmitted to the safety device 100 of the electric equipment for a dwelling unit in such a state, the upper and lower damping means 700 are connected to the vibration damping unit 700 composed of the coil spring 732 and the leaf spring 734, (730).

When vibration is transmitted to the secondary fixed panel 300, the secondary fixed panel 300 includes the viscous cushioning member 440 mounted from the outside to the inside, the rubber buffer member 460, and the distribution panel supporting panel 500 to minimize the impact and vibration transmitted in the horizontal direction through the panel support plate 340 mounted on the rear surface.

As described above, the safety device of the electric equipment for a residential house according to the present invention not only prevents external impact from being transmitted to the distribution board through multiple vibration and shock mitigation configurations, but also prevents a short circuit of the electric wires coupled to the distribution board.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made without departing from the essential characteristics of the present invention.

Therefore, the embodiments described in the present invention are not intended to limit the scope of the present invention, but are intended to be illustrative, and the scope of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas which are equivalent or equivalent thereto should be interpreted as being included in the scope of the present invention.

100: Safety device for electrical appliances for apartment houses
200: Case 220: Case mounting space
240: Door 260: Wire through hole
280: wire fixture 281: fixture body
282: fitting engagement groove 283: fitting fitting groove
300: Pre-fixed panel 310: Support panel mounting space
312: panel connecting groove 320: first member mounting groove
330: second member mounting groove 340: panel support plate
420: engagement fastener 421: fastener body
422: tight fixture 440: viscous buffer member
460: Rubber buffer member 500: Distribution panel support panel
510: Fixing mounting groove 520: Panel joining groove
530: Panel board fixture 532: Support projection
600: connecting rod 610: one end
620: other end 630: helical joint part
640: packing 700: upper and lower buffer means
710: first support plate 712: support groove
720: second support plate 722: support groove
730: vibration damping portion 732: coil spring
734: leaf spring 740: side buffer member
800: Spacing adjuster 810: Adjustment case
812: accommodation space 820: rotating shaft
830: eccentric operating member 840: buffer member
900: fixing means 910: fixed case
912: mounting space 920: fastener
922: Fixing projection 930:
940: adjusting screw 950: pressing spring

Claims (3)

And a door 240 for opening or closing the mounting space 220 is mounted on the front side of the case mounting space 220. A wire through hole 260 is formed on both sides of the case for mounting the electric wire, A case 200 having a rectangular shape;
A support panel mounting space 312 is formed in the mounting space 220 of the case 200 and is formed on the rear surface of the case 200, A first member mounting groove 320 in which a viscous buffer member 440 having a viscosity is spaced apart from the support panel mounting space 310 is mounted at an interval, A second member mounting groove 330 formed of rubber or silicone and having an inner hollow rubber buffer member 460 is formed between the support panel mounting space 310 and the first member mounting groove 320, And a backing panel 300 on which a panel support plate 340 formed of rubber or silicon is mounted.
A fixing fixing groove 510 is formed at the center of the fixing panel 300 and a fixing fixture 420 is provided at the upper and lower ends of the panel fixing groove 300, A fixing protrusion 532 is formed along the inner surface of the fixing mounting groove 510 and a hollow panel board fixture 530 for fixing the panel board 10 is mounted A distribution panel supporting panel 500;
One end 610 of a spherical shape is coupled to the engagement fastener 420 of the panel engagement groove 312 constituting the support panel mounting space 310 and the other end 620 of the spherical shape is coupled to the distribution panel support panel And a spiral coupling portion 630 is formed at a central portion of the panel coupling groove 520 so as to be adjustable in length while the central portion of the panel coupling groove 520 is cut. A connecting rod 600 on which the packing 640 is mounted;
A first support plate 710 which is disposed on the upper and lower portions of the first and the second fixed panels 300 and which is in close contact with the case 200 and has a support groove 712 formed in a plate shape, And a plurality of coil springs 732 and a leaf spring 734 are disposed between the first and second support plates 710 and 720. The first and second support plates 710 and 720 are spaced apart from each other, Upper and lower buffering means 700 to which a lateral buffering member 740 is attached, the peripheral portion of which is formed of rubber or silicon, to which the relaxation portion 730 is attached;
An interval adjusting member 800 mounted on the back surface of the case 200 so as to be spaced apart and prevented from eccentricity; And
And fixing means 900 mounted at intervals along the outer surface of the case 200 and fixed to the wall surface of the structure,
The space adjuster 800 includes a rectangular box-shaped adjustable case 810 having a receiving space 812 formed therein and an open side thereof; A rotation shaft 820 mounted on the adjustment case 810; An eccentric operation member 830 rotating on the rotation shaft 820 and having one side accommodated in the accommodation space 812 of the adjustment case 810 and the other side projecting to the outside; And a buffer member (840) mounted on an outer surface of the eccentric operation member (830) and formed of rubber or silicone,
The fixing means 900 includes a fixed case 910 mounted along the outer surface of the case 200 and communicating with the inside of the case 200; A fixture 920 disposed in the mounting space 912 of the fixed case 910 and having a fixing protrusion 922 having an arrowhead or a triangular shape at an end thereof; An operating rod 930 having one end coupled to the fixture 920 and the other end disposed in the case mounting space 220 of the case 200 and having a spiral formed on the outer surface thereof; An adjusting screw 940 spirally coupled to the operating rod 930 located in the case mounting space 220 of the case 200 and adjusting the operating length of the operating rod 930; And a pressing spring (950) mounted between the fixing case (910) and the fixture (920). delete delete

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