KR20180134691A - A Draining Pipe Assembly For Washstand - Google Patents

Abstract

A drainage pipe assembly for a sink according to the present invention includes a first drainage portion having an upper end hanging on a sink side drain hole and extending downward through a sink side drain hole and having a first drain pipe protruding below the sink side, a hose portion having a lower end portion inserted into the drain hole, A second water distribution unit connected to the first drainage unit and coupled to the hose unit at a lower portion thereof and a first elastic body disposed between the washroom and the second drainage unit and inserted into the first drainage pipe;
And the second drainage part is detachably coupled to the first drainage part by the latching part.

Description

A Draining Pipe Assembly For Washstand '

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain pipe assembly for a washstand, and more particularly, to a drain pipe assembly for a wash compartment having a latching portion at a second drainage portion to facilitate disassembly and assembly and prevent breakage due to frequent disassembly and assembly.

Generally, the wash basin is provided with a drainage set for discharging the water generated during washing to the drain.

As shown in Figs. 1 and 2, a conventional drain pipe assembly for a washstand comprises a pop-up drainage portion 10, a hose portion 20, and a drain pipe 30.

The sink base 1 is a container which is open at the top to store tap water. A through hole (not shown) is formed in a central area of the sink base 1, and a pop-up valve 11 of the pop-up drainage unit 10 is disposed in the through hole.

The pop-up drainage section 10 includes a pop-up valve 11, a first drainage section 12, an overflow 13, and a second drainage section 14.

The pop-up valve 11 is a drain opening / closing device disposed in the through-hole of the washstand 1 to drain or store the water in the washstand 1 and is generally called a pop-up valve, Is a well-known drainage opening / closing device, and thus a detailed description thereof will be omitted. One end of the pop-up valve 11 is formed with a first connection portion 11a having a thread and is screwed and connected to a second connection portion 12a formed at an upper end of the first drainage portion 12. [

The first drainage part 12 includes a second connection part 12a, a third connection part 12b, and a fourth connection part 12c.

The first drainage part 12 is formed in a cylindrical shape and a second connection part 12a having a screw thread formed inside the upper end thereof is formed and the second connection part 12a is screwed and connected to the first connection part 11a .

The third connection portion 12b is threaded inside the lower end of the cylindrical portion of the first drainage portion 12 and connected to the sixth connection portion 14a of the second drainage portion 14 by screwing. The fourth connection part 12c is threaded inside the upper end of the third connection part 12b and connected to the fifth connection part 13a formed at the upper end of the overflow 13 by screwing.

The overflow 13 is an overflow 13 used in a drainage structure of a conventional washstand 1 and is formed with a fifth connection portion 13a having an upper end threaded portion and is screwed to the fourth connection portion 12c do. In the overflow 13, a drain hole 13b through which the water flowing through the pop-up valve 11 passes is formed below the fifth connecting portion 13a. A space 13c in which a space of a predetermined size is formed is formed in the lower side of the overflow 13. The overflow 13 serves to prevent backflow of water and to prevent odors coming from the sewage pipe to the washstand 1 side.

The second drainage section 14 includes a sixth connection section 14a, an extension section 14b, a drainage hole 14c, and a water passage 14d.

The sixth connection part 14a is threaded outside the upper end of the second drainage part 14 and is screwed to the third connection part 12b of the first drainage part 12.

The extension part 14b is formed to protrude outward in the form of a tube so as to be connected to one end of the hose part 20 and the drainage hole 14c is formed by discharging water flowing into the hose part 20 through the water passage 14d .

The hose unit 20 includes an outer hose 21, an inner hose 22, and a connecting screw 23.

The hose portion 20 is a flexible hose used for a normal washstand structure. The hose portion 22 is made of a synthetic resin material and the outer hose 21 made of a metal material such as stainless steel has a double structure. The outer hose 21 and the inner hose 22 are connected to the extended portion 14b by the connecting screw 23 passing through the outer hose 21 and the inner hose 22 in a connected state .

The drain pipe 30 is a metal pipe such as stainless steel and is welded to the outside of the outer hose 21 to be connected and fixed so that water passing through the inner hose 22 flows into the outside drain pipe 3 do.

However, in the conventional sewage pipe assembly, when the pop-up drainage unit 10 is clogged with foreign matter such as hair, it is difficult to separate and assemble the pop-up drainage unit 10.

Korean Utility Model Registration No. 20-0459796 (Apr. 25, 2012)

It is an object of the present invention to provide a drain pipe assembly for a wash compartment, which is provided with a latching part at a second drain part and is easy to disassemble and assemble, and is prevented from breakage due to frequent disassembly and assembly.

A drainage pipe assembly for a washstand of the present invention includes a first drainage portion having an upper end hanging on a washbowl drain hole and extending downward through a washbowl drain hole and having a first drain pipe protruding below the washbowl, a hose portion having a lower end inserted into the drain hole, A second drainage part coupled to the first drainage part and coupled to the hose part, and a first elastic body inserted between the washroom and the second drainage part and inserted into the first drainage pipe;

And the second drainage part is detachably coupled to the first drainage part by the latching part.

In the above, the second drainage section is composed of an upper member which is a hollow member opened up and down, and a lower member which is hollowed up and which is coupled to a lower portion of the upper member, A lower portion of the first elastic body is inserted into the upper member expanding portion and is pressed against the jaw portion so as to press the first elastic body and the lower portion of the first elastic body, The drain pipe is inserted into the upper member through the upper member expansion portion and the upper member extension portion;

And the latching part is coupled to the first drain pipe inserted into the upper member so that the second drainage part is detachably coupled to the first drainage part.

In the above-described embodiment, the upper and lower portions of the upper and lower water pipes are provided with a plurality of locking projections protruding outwardly and arranged in the vertical direction;

The engaging portion includes an engaging member rotatably provided on the upper portion of the rotating shaft and a second elastic body provided between the upper portion of the rotating shaft and the engaging member on one side of the rotating shaft ;

Wherein the engaging member is provided with an engaging member protrusion extending toward the upper member extending portion opposite to the second elastic body with a rotation shaft interposed therebetween and having an engaging projection protruding from the end portion to be engaged with the engaging projection;

When the coupling member is pushed outwardly by the second elastic body, the coupling member rotates about the axis of the rotation shaft, and the coupling protrusion is inserted into the upper member side hole of the upper member extension portion and is coupled to the locking projection.

In the above, the latching part may further include a latching housing; Wherein the latching housing comprises a housing wall protruding outwardly from an outer surface of the upper member extending portion and having a recessed housing mounting portion formed therein, the upper member side wall being formed at a position communicating with the housing mounting portion, And a wall having a housing support hole formed in a lateral direction and facing each other;

The coupling member is provided with a coupling member shaft portion projecting laterally to both sides, and the coupling member shaft portion is rotatably inserted into the housing support hole so that the coupling member is rotatably provided in the coupling housing.

The housing protrusion is protruded outward so as to be parallel to the wall and is spaced apart from the housing support hole in one of the upper and lower directions. The coupling protrusion is provided on the housing protrusion, And a coupling member protrusion protruding inward toward the projection. The second elastic member is a coil spring, and the housing protrusion and the coupling member protrusion are inserted into both ends of the coupling member protrusion.

In the above, the upper member side slit is formed to be positioned opposite to the housing projection with the housing support hole therebetween; And the engaging member protruding portion is provided at a position where the engaging member protruding portion is inserted into the upper member side hole opposite to the engaging member protrusion with the engaging member shaft portion interposed therebetween.

The drain pipe assembly for a sink according to the present invention is provided with a latching part at the second drainage part, so that it is easy to disassemble and assemble and is easily installed, and breakage due to frequent disassembly and assembly is prevented.

1 is a sectional view showing a state in which a conventional drain pipe assembly for a washstand is installed,
2 is a cross-sectional view of a conventional drain pipe assembly for a washstand,
3 is a cross-sectional view showing a state in which a drain pipe assembly for a sink according to the present invention is installed,
4 is a cross-sectional view illustrating a first drainage portion of a drain pipe assembly for a washstand according to the present invention,
FIG. 5 is an enlarged sectional view of a part of a drain pipe assembly for a sink according to the present invention,
6 is a perspective view illustrating a coupling member of a drain pipe assembly for a washstand according to the present invention,
7 is a perspective view showing a latching housing of a drain pipe assembly for a washstand according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a drain pipe assembly for a sink according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a sectional view showing a state where a drain pipe assembly for a sink according to the present invention is installed, FIG. 4 is a sectional view showing a first drainage part of the drain pipe assembly for a sink according to the present invention, FIG. 6 is a perspective view illustrating a coupling member of a drain pipe assembly for a sink according to the present invention, and FIG. 7 is a perspective view illustrating a latch housing of the drain pipe assembly for a sink according to the present invention .

In Fig. 3, the vertical direction is referred to as " vertical direction ", the transverse direction in the radial direction in Fig. 5 is referred to as the outward direction from the upper part re- Describe the opposite direction as "inward".

3, the drain pipe assembly 100 for a washstand according to the present invention is installed by connecting the washstand 101-1 of the washstand 101 to the drain hole 103. As shown in FIG. The washtub drain assembly 100 includes a first drain 110, a first elastic body 102, a second drain 120, a latch 130, and a hose 140.

As shown in FIG. 4, the first drainage part 110 is provided through the sink port 101-1. The first drainage unit 110 includes a first drain pipe 111 and a first drainage flange 115.

The first water pipe 111 is provided as a pipe. The first drain pipe 111 extends downward from the washstand 101 and protrudes below the washstand 101.

A first drainage flange 115 is provided at an upper end of the first drain pipe 111. The first drainage flange 115 extends radially outwardly from the upper end of the first drainage pipe 111. A sealing member 105 made of a rubber material may be further provided between the first drainage flange 115 and the washstand 101.

The first drain pipe 111 is provided to be hooked on the wash bowl drain hole 101-1 by the first drain pipe flange 115.

A plurality of locking protrusions 113a are provided on an outer surface of the lower portion of the first water pipe 111. The locking protrusions 113a protrude outward and are arranged in the vertical direction. The locking protrusion 113a is formed to be inclined downward and the upper portion is formed as a horizontal surface.

The latching protrusion 113a may be formed on the outer surface of the latching member 113, which is a separate pipe. The inner diameter of the latching member 113 is equal to the outer diameter of the first drain pipe 111. The first drain pipe 111 is formed such that the lower portion of the first drain pipe 111 is inserted into the latch member 113 so that the first drain pipe 111 and the latch member 113 are integrated with each other.

The first elastic body 102 is provided with a coil spring or the like. The first elastic body 102 is provided under the washstand drain 101-1. The first elastic body 102 is inserted between the wash basin 101 and the second drain 120 by being inserted into the first drain pipe 111. The upper end of the first elastic body 102 is provided in contact with the washstand 101 and the lower end of the first elastic body 102 is provided in contact with the jaws of the upper member expansion portion 121-3 of the second drainage portion 120.

A guide member 109 may be further provided between the first elastic body 102 and the washstand 101. The guide member 109 is annular and is inserted into the first drain pipe 111 and is in contact with the lower surface of the washstand 101. The guide member 109 is formed such that the edge thereof is curved downwardly so as to stably support the upper end of the first elastic body 102. A sealing member 107 made of a rubber material may be further provided between the guide member 109 and the washstand 101. The upper end of the first elastic body 102 is pressed against the guide member 109.

As shown in FIG. 5, the second drainage part 120 An upper portion is coupled to the first drainage portion 110 and a lower portion is coupled to the hose portion 140. [ The second drainage unit 120 includes an upper member 121, a lower member 123, and a trap member 125.

The upper member 121 is provided as a hollow body opened up and down. The upper member 121 is formed with an upper member coupling part 121-5, an upper part reenactment part 121-1 and an upper member expansion part 121-3.

The upper member engaging portion 121-5 is formed on the lower inner surface of the upper member 121. [ The upper member coupling portion 121-5 is formed in a thread-like shape. The upper member 121 is engaged with the lower member 123 by the upper member coupling portion 121-5.

The upper rebound portion 121-1 is formed on the upper member 121. The upper portion reburning portion 121-1 is provided with an upwardly extending jaw portion that extends upward. An upper member side hole 121-7, which is laterally penetrated, is formed at one side of the upper side reburning portion 121-1. And a latching part 130 is provided at a position where the upper member side hole 121-7 is formed.

The upper member expansion part 121-3 is formed on the upper part of the upper part re-burning part 121-1. The upper member expanding portion 121-3 is extended upward to form an upwardly protruding portion on the upper side of the upper portion re-drawing portion 121-1.

The lower portion of the first elastic body 102 is inserted into the upper member expansion portion 121-3 and is pressed against the jaw portion. The first water pipe 111 is inserted into the upper member 121 through the upper member expansion part 121-3 and the upper part rewinding part 121-1 in order.

The lower member 123 is provided as a hollow body opened up and down. The lower member 123 is engaged with the lower portion of the upper member 121. The lower member 123 is formed with a lower member coupling part 123-5, a lower part recombination part 123-1, and a lower part rewriting part 123-3.

The lower member engaging portion 123-5 is formed on the upper outer surface of the lower member 123. [ The lower member fastening part 123-5 is formed in a threaded shape. The lower member coupling part 123-5 is screwed with the upper member coupling part 121-5.

The lower part 123-1 is formed at the lower part of the lower member 123. [ The lower portion recombination unit 123-1 is provided with a downwardly extending tapered portion extending downward. An upward concave groove is formed in the lower part recombination unit 123-1. The grooves are formed in the grooves and the upper end of the hose unit 140 is engaged.

The lower re-combining part 123-3 extends upward from the upper end of the lower part re-combination part 123-1 and protrudes into the lower part 123. [ A trap member 125 is provided on the lower re-burnishing unit 123-3.

The trap member 125 is provided on the upper portion of the lower re-burnishing portion 123-3. The trap member 125 is composed of an upper plate portion 125-1, a cylindrical portion 125-3, and a partition wall 125-5.

The upper plate portion 125-1 is provided in a disc shape. The diameter of the upper plate portion 125-1 is larger than the diameter of the lower portion re-drawing portion 123-3. The upper plate portion 125-1 is spaced upward from the upper end of the lower portion re-burnishing portion 123-3.

The cylindrical portion 125-3 extends downward at the edge of the upper plate portion 125-1. The diameter of the cylindrical portion 125-3 is formed to be larger than the diameter of the lower portion reburn 123-3. The lower end of the cylindrical portion 125-3 is spaced upward from the lower portion of the lower member 123. The lower end of the cylindrical portion 125-3 is positioned between the lower portion of the lower member 123 and the upper end of the lower portion re-formation portion 123-3.

The partition member 125-5 extends radially inwardly and downwardly from the lower end of the cylindrical portion 125-3. The partition walls 125-5 are spaced apart from each other in the circumferential direction. The diameter of the imaginary circle connecting the inner ends of the partition walls 125-5 spaced apart from each other is formed to be equal to or larger than the outer diameter of the lower reburning part 123-3. And a lower part re-formation part 123-3 is located between the inner ends of the partition wall body 125-5.

The engaging portion 130 is provided on one lateral side of the upper side reburning portion 121-1. The locking part 130 is provided at a position where the upper member side hole 121-7 is formed. The second drainage part 120 is detachably coupled to the first drainage part 110 by the latching part 130. The latching part 130 is coupled to the first drain pipe 111 inserted into the upper member 121 and the second drainage part 120 is detachably coupled to the first drainage part 110.

The engaging portion 130 includes the engaging member 133, the engaging member 131, and the second elastic member 135.

As shown in FIG. 7, the latching housing 133 is provided on the outer surface of the position where the upper member side hole 121-7 is formed. The latching housing 133 is formed to protrude outward from the outer surface of the upper portion re-burning portion 121-1. The latching housing 133 includes a housing wall 133-1 and a housing protrusion 133-7.

The housing wall 133-1 is provided at a position where the upper member side wall 121-7 is formed on the outer surface of the upper side reburning portion 121-1. The housing wall 133-1 is composed of two first walls 133-1a and two second walls 133-1b.

The first wall 133-1a is spaced laterally from the upper member side wall 121-7 to face each other. The first wall 133-1a is formed with a housing support hole 133-5 which is laterally penetrated. The housing support hole 133-5 is preferably formed at a position spaced upward from the upper member side hole 121-7.

The second wall 133-1b is vertically spaced apart from the upper member side wall 121-7 to face each other. The second wall 133-1b is connected to the first wall 133-1a having both ends separated from each other.

A housing mounting portion 133-3 is formed inside the housing wall 133-1. The housing mounting portion 133-3 is formed to communicate with the upper member side wall 121-7.

The housing protrusion 133-7 is provided in the housing mounting portion 133-3. The housing protrusion 133-7 is protruded outward so as to be in parallel with the first wall 133-1a and the second wall 133-1b. The housing protrusion 133-7 is positioned on the opposite side of the upper member side wall 121-7 with the housing support hole 133-5 interposed therebetween. The housing protrusion 133-7 is spaced upward from the housing support hole 133-5.

The engaging member 131 is provided in the housing mounting portion 133-3 of the engaging housing 133. [ 6, the engaging member 131 includes the engaging member main body 131-1, the engaging member wall 131-3, the engaging member protrusion 131-5, the engaging member shaft 131 -7), and a coupling member projection 131-9.

The coupling member main body 131-1 is formed in a rectangular plate shape. The engaging member main body 131-1 may be formed in a concave plate shape toward the engaging housing 133. [

The coupling member wall 131-3 extends along the edge of the coupling member main body 131-1 toward the upper portion rewinding portion 121-1. The coupling member wall 131-3 is composed of a first coupling member wall (not shown) and a second coupling member wall (not shown).

The first coupling member walls are two, and are spaced apart from each other and facing each other between the first walls 133-1a. The first coupling member wall faces the first wall 133-1a.

The second coupling member wall is provided on one side of the first coupling member wall in the vertical direction. The second coupling member wall is provided on the opposite side of the upper member side wall 121-7 with respect to the housing support hole 133-5. The second coupling member wall faces the second wall 133-1b. And both ends of the second coupling member wall are connected to upper ends of the first coupling member wall.

The coupling member protrusion 131-5 is provided inside the coupling member wall 131-3. The coupling member protrusion 131-5 is provided to face the housing protrusion 133-7. The coupling member protrusion 131-5 protrudes inward from the coupling member main body 131-1 toward the housing protrusion 133-7.

A second elastic body 135 is provided between the coupling member protrusion 131-5 and the housing protrusion 133-7. The second elastic body 135 is a coil spring, and the housing protrusions 133-7 and the coupling member protrusions 131-5 are inserted into both ends thereof.

The coupling member shaft portion 131-7 is provided in the first coupling member wall of the coupling member wall body 131-3. The coupling member shaft portion 131-7 protrudes laterally from the first coupling member wall. The coupling member shaft portion 131-7 is rotatably inserted into the housing support hole 133-5.

Therefore, the engaging member 131 is rotatably provided on the engaging member 133 with the engaging member shaft portion 131-7 as the center by the engaging member shaft portion 131-7.

The coupling member projection 131-9 is provided on the opposite side of the coupling member projection 131-5 with the coupling member shaft portion 131-7 interposed therebetween. The coupling member projection 131-9 is provided at a position where the upper member side hole 121-7 is formed. The engaging member protrusion 131-9 extends from the engaging member main body 131-1 toward the upper side reburning portion 121-1 and is inserted into the upper member side hole 121-7.

An engaging protrusion 131-2 is formed at an end of the engaging member protrusion 131-9. The engaging projection 131-2 is protruded to be caught by the engaging projection 113a. The upper portion of the coupling protrusion 131-2 is formed with an upward slope and the lower portion is formed with a horizontal plane. When the engaging projection 131-2 is caught by the engaging projection 113a, the lower horizontal surface of the engaging projection 131-2 is in contact with the upper horizontal surface of the engaging projection 113a.

The second elastic body 135 is provided as a coil spring. The second elastic body 135 The housing protrusion 133-7 and the coupling member protrusion 131-5 are inserted between the coupling member protrusion 131-5 and the housing protrusion 133-7 at both ends thereof.

When the engaging member 131 is pressed outward by the second elastic body 135, the engaging member 131 rotates about the engaging member shaft portion 131-7, Is inserted into the upper member side wall 121-7 of the ledge 121-1 and is fixedly coupled to the locking projection 113a.

When the second elastic body 135 is compressed by an external force, the coupling member 131 rotates around the coupling member shaft portion 131-7 so that the coupling protrusion 131-2 is separated from the upper member hole 121-7 .

Therefore, disassembling and assembling of the first drainage part 110 and the second drainage part 120 by the fastening part 130 is simple and easy.

The hose unit 140 is provided at a lower portion of the second drainage unit 120. The hose unit 140 is provided as a tubular body. The lower end of the hose 140 is inserted into the drain hole 103. The hose unit 140 includes a hose unit main body 141, a hose connection pipe 143, and a sewage pipe 145.

The hose body 141 is formed as a corrugated pipe and extends in the vertical direction. A hose connecting pipe 143 is provided on the upper and lower portions of the hose body 141.

The hose connection pipe 143 is a tubular body, and the outer diameter of the end portion is formed with a thread. The hose connection pipe 143 provided at the upper portion of the hose main body 141 is coupled to the lower part recombination unit 123-1 by a method such as screwing. The hose connection pipe 143 provided at the lower portion of the hose main body 141 is coupled to the sewage pipe 145 by a method such as screw tightening.

The sewage pipe 145 is provided at a lower portion of the hose main body 141. The sewage pipe 145 is provided in a cylindrical shape which is opened in the vertical direction. The sewage pipe 145 is inserted into the sewer hole 103 to communicate the sewer hole 103 and the hose main body 141.

Although the drain pipe assembly for a sink according to the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

100: Sewer pipe assembly
101: Wash basin 102: First elastic body
110: first drainage part 111: first drainage pipe
113: engaging member 120: second drainage part
121: upper member 123: lower member
125: Trap member 130:
131: engaging member 133: engaging housing
135: second elastic member 140: hose part
141: hose main body 145: sewage pipe

Claims (5)

A first drainage part 110 having an upper end connected to the sink side drainage hole 101-1 and extending downward through the sinkside drainage hole 101-1 and having a first drainage pipe 111 protruding below the washstand 101, A second drainage part 120 coupled to the first drainage part 110 and coupled to the hose part 140 at an upper portion thereof, And a first elastic body 102 which is inserted between the wash basin 101 and the second drain 120 and is inserted into the first drain pipe 111;
Wherein the second drainage part (120) is detachably coupled to the first drainage part (110) by the latching part (130). The apparatus according to claim 1, wherein the second drainage part (120) comprises: an upper member (121) having a hollow upper and lower openings; a lower member (123) connected to the lower part of the upper member (121) And the upper member 121 includes a top raised portion 121-1 which is an upwardly extending hollow and an upper raised portion formed on the top of the upper raised portion 121-1, The lower portion of the first elastic body 102 is inserted into the upper member expansion portion 121-3 and is pressed against the jaw portion so that the first water pipe 111 is inserted into the upper portion expansion portion 121-3, Is inserted into the upper member 121 through the member expanding portion 121-3 and the upper portion reenacting portion 121-1;
The latching part 130 is coupled to the first drain pipe 111 inserted into the upper member 121 so that the second drainage part 120 is detachably coupled to the first drainage part 110 Sewer pipe assembly. [3] The apparatus according to claim 2, wherein the upper part re-drawing part (121-1) is provided with an upper member side hole (121-7) penetrating sideways, the lower part of the first water pipe (111) A plurality of locking protrusions 113a are provided;
The engaging portion 130 includes an engaging member 131 rotatably provided on the upper portion rewound portion 121-1 about a rotation axis extending sideways and an upper portion rewinding portion 121-1 And a second elastic body 135 provided between the coupling member 131 and the second elastic body 135;
The engaging member 131 extends toward the upper portion rebounding portion 121-1 on the opposite side of the second elastic body 135 with the rotation shaft therebetween and has an engaging projection 131a projected to the engaging projection 113a, (131-9) having an engaging projection (131-2);
When the engaging member 131 is pushed outward by the second elastic body 135, the engaging member 131 rotates around the axis of rotation and the engaging projection 131-2 is engaged with the upper portion of the upper re- Is inserted into the member side hole (121-7) and is coupled to the locking projection (113a). 4. The apparatus of claim 3, wherein the latching part (130) further comprises a latching housing (133); The latching housing 133 comprises a housing wall body 133-1 which protrudes outward from the outer surface of the upper reburning part 121-1 and forms a recessed housing mounting part 133-3 on the inner side, The side wall 121-7 is formed in a position communicating with the housing mounting portion 133-3. The housing wall 133-1 is laterally spaced apart from the housing supporting hole 133-5 ) Is formed;
The coupling member 131 is provided with a coupling member shaft portion 131-7 projecting laterally on both sides so that the coupling member shaft portion 131-7 is rotatably inserted into the housing support hole 133-5, And the member (131) is rotatably provided in the locking housing (133). [5] The apparatus as claimed in claim 4, further comprising: a housing protrusion protruding outwardly to be parallel to the wall between the laterally spaced walls constituting the housing wall body (133-1) and spaced apart from the housing support hole (133-5) And a coupling member protrusion 131-5 protruding inward toward the housing protrusion 133-7 to face the housing protrusion 133-7 is provided on the coupling member 131 , And the second elastic body (135) is a coil spring, and the housing protrusions (133-7) and the coupling member protrusions (131-5) are inserted into both ends of the second elastic body (135).

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