KR101898111B1 - Blocking tape fixing unit - Google Patents

Abstract

The present invention relates to a blocking tape fixing unit capable of fixing both ends by applying tensile force to a blocking tape installed to control the entry of a person. The present invention comprises: a connection unit which is detachably connected to a connection target member; a winding unit which is located on the upper part of the connection unit, rotates a blocking tape wound thereon, and controls tensile force of the blocking tape according to the rotation; and a rotary unit which is connected to each of the connection unit and the winding unit, rotates the winding unit by an operation of a user, and adjusts the rotational direction of the winding unit. According to the present invention, the blocking tape fixing unit is simply installed and used on an existing blocking rod without having to change a structure of the blocking bar to expand a blocking area. Thus, it is possible to reduce burden of increase in costs for extension of the blocking area. Economical feasibility is secured, and maintenance and storage are easy. By minimizing an exposed portion of a switch lever unit, negligent accidents and the like caused thereby can be effectively prevented.

Description

 [0001] Blocking tape fixing unit [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a blocking tape fixing unit for applying a tensile force to a blocking tape installed to control the entrance and exit of a person so that both ends can be fixedly installed.

Generally, the shut-off bar is installed to guide the flow of people or vehicles at various venues including a theater or a theater, or to establish a blocking zone to block people's access to a crime scene, And a head portion having a cut-off belt wound around an upper portion of a vertically erected support is coupled to the upper portion of the support, so that access and entry are blocked using a cut-off belt depending on the situation.

In the meantime, as an example of the above-described technique for the above-described shut-off bar, Korean Patent Laid-Open Publication No. 10-2010-0018745 discloses a guide rail which is provided on the ground surface of an entrance and has a guide groove formed on an upper surface thereof, A movable strut provided on the fixed strut and being wound on a drum having a rotational elastic force by a spring spring and having a longitudinal end fixedly connected to the movable strut; And an opening / closing device for opening / closing the door.

However, since the above-described conventional shut-off bar has a relatively large thickness and a heavy weight, it is necessary to improve the size and the supporting ability of the support of the support to increase the length of the cut-off belt. If the length is increased, the winding elasticity of the cut-off belt must be improved, resulting in an increase in manufacturing cost due to structural reinforcement and an increase in weight.

Korean Patent Publication No. 10-2010-0018745

It is an object of the present invention to solve the problems caused by an increase in cost and an increase in self-weight and at the same time to enlarge the cut-off area and to easily combine various structures of a structure including a conventional shut- It is an object of the present invention to provide a blocking tape fixing unit.

According to an aspect of the present invention for achieving the above-mentioned object, the present invention provides a portable terminal comprising: a connection part detachably connected to a member to be connected; A winding unit positioned at an upper portion of the connection unit to rotate the blocking tape so as to rotate and adjust the tension of the blocking tape in accordance with rotation; And a rotation unit connected to the connection unit and the winding unit to rotate the winding unit by a user's operation and to control the rotation of the winding unit.

In this case, the connection unit may include a connection body detachably connected to the connection target member, and a first plate formed on the connection body and having the rotation unit.

The second plate is spaced apart from the upper portion of the first plate, and the lower end of the second plate is fixedly coupled to the outer surface of the second plate to be perpendicular to the first plate. And a manipulation handle coupled to an upper end of each of the winding bars to allow the user to rotate the winding bar to adjust the tension of the blocking tape.

In addition, the winding bar may be formed with a slit groove in which the upper portion is opened and formed along the longitudinal direction so that the blocking tape is flatly fitted.

And the winding portion includes a second plate spaced apart from the upper portion of the first plate; And a slit groove formed on the upper surface of the second plate so as to allow the blocking tape to be wound along an outer circumferential side thereof and to have an upper portion thereof opened along the longitudinal direction, .

The winding unit may further include an operation unit formed on the upper outer peripheral side of the winding roll to allow the user to rotate the winding roll to wind the blocking tape to adjust the tension; The operation portion may be formed by an operation projection or an operation groove formed to protrude along the outer peripheral side surface of the take-up roll.

The rotating part is vertically installed between the first plate and the second plate, the lower part is rotatably coupled to the first plate, and the upper part is fixedly coupled to the second plate, A gear portion provided between the first plate and the second plate and fixedly coupled to the rotary shaft portion by a central axis and having a ratchet gear formed on an outer circumferential surface thereof; A switch lever portion pivoting around a hinge axis coupled to the plate and pivoting in accordance with a user's operation to control the rotation of the gear portion; a switch lever portion having one end connected to the switch lever portion and the other end connected to the second plate or the first plate And an elastic member connected to the switch lever portion and elastically supporting the switch lever portion.

The first plate and the second plate may be formed of a circular plate having the same shape and the same diameter, and the rotary shaft may be installed at the center of the first plate and the second plate.

The connection target member includes a column portion which is erected in a vertical direction and a head portion which is provided at an upper end of the column portion and in which a cut-off belt is wound and one or a plurality of drawing portions protruding outward from the cut- And the like.

The connecting portion may be a hollow tube having a lower portion and a closed upper portion. The connecting portion is detachably fitted around the upper portion of the head portion. The connecting portion is vertically formed from the lower end to the upper portion of the outer peripheral side, And a connection body in which an insertion groove is formed.

The hinge shaft and the elastic member are connected to each other in a shape of an arc, and the tip of the switch lever portion is formed with a fitting portion which is fitted in the groove of the ratchet gear. The fitting portion is selectively fitted in the ratchet gear, A first lever which extends outwardly of the lever body so as to be operable by a user and which is located in front of the hinge axis and turns the lever body; And a second lever which extends outward from the lever body so as to be operable by a user and which is located behind the hinge shaft and turns the lever body.

The winding unit may include a second plate positioned to be spaced apart from the upper portion of the first plate and a second plate having a lower end vertically joined to a center portion of the upper surface of the second plate, And a fitting portion.

In addition, the roll-in portion may be formed with a locking groove or a locking protrusion on a side contacting with the blocking tape roll to prevent relative rotation with the blocking tape roll.

The winding portion is detachably inserted into the core portion of the tape positioned at the center of the blocking tape roll and is inserted into the inner circumferential side surface in the form of a hollow tube and the tape fitting portion having a flat- Sectional shape of the outer peripheral side is formed in a polygonal shape corresponding to a flat cross-sectional shape of the tape fitting portion so that relative rotation between the tape fitting portion and the tape fitting portion is prevented, May be combined.

The winding unit may further include a tape fitting portion detachably inserted into the core portion of the tape positioned at the center of the blocking tape roll and in which the roll fitting portion is inserted into the inner circumferential side in the shape of a hollow tube, In order to adjust the pull-out lock and the pull-out release of the blocking tape in the blocking tape roll on which the blocking tape has been wound, the blocking tape roll is moved in the set direction in correspondence with the rotating direction of the rotating part unidirectionally rotating and the pull- A fitting direction setting section may be formed so as to be fitted only with the fitting direction setting section.

It is preferable that the fitting direction setting unit includes a first multifunctional layer formed so as to have a larger flat area toward the lower portion of the roll-in portion, and the tape fitting portion has a flat bottom surface 2 multi-layer may be formed.

The blocking tape fixing unit according to the present invention provides the following effects.

First, even if the blocking area is expanded by using the blocking tape, the cost increase due to the structural reinforcement can be reduced, and the own weight can be reduced.

Secondly, since it can be easily installed on a conventional bar, or can be easily connected to various structures of other structures, applicability can be increased and utility can be improved.

Third, the exposed portion of the switch lever portion is minimized, thereby effectively preventing a safety accident or the like.

Fourth, since it is possible to connect to a variety of configurations such as a fire truck or a police car through a connection part that is easy to attach and detach, it is possible to effectively block the entrance and exit without installing a shut-off bar.

Fifth, since a barrier tape made of a vinyl or resin material is used, the weight increase due to the cut-off length can be reduced, thereby making it possible to design and manufacture the structure of the winding portion for winding the blocking tape light and simple. It is easy to use because it can be applied easily on the market.

1 is a perspective view of a blocking tape fixing unit according to an embodiment of the present invention.
2 is an exploded perspective view of the blocking tape fixing unit of FIG.
Fig. 3 is a perspective view showing a case where a slit groove is formed in the winding part in the blocking tape fixing unit of Fig. 2;
4 is a plan view showing a configuration of a rotating part in the blocking tape fixing unit of Fig.
Fig. 5 is a perspective view showing another embodiment of the winding unit in which the blocking tape roll is fitted in the blocking tape fixing unit of Fig. 1;
Figs. 6 and 7 are views showing examples of use of the blocking tape fixing unit of Figs. 1 and 5. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIGS. 1 and 2, a blocking tape fixing unit according to an embodiment of the present invention includes a connection unit 200, a winding unit 300, and a rotation unit 400.

The connection unit 200 is detachably connected to the connection target member, and various configurations such as an insertion structure or a fitting structure that can be connected to the structure and shape of the connection target member can be applied.

Meanwhile, although various configurations can be applied to the connection target member, a case where the connection target member is applied as the shutoff bar 100 will be described below as an example.

Before describing the construction of the blocking tape fixing unit, the blocking bar 100 is designed to block or guide a person, such as a theater, a construction site, or a fire scene, And includes a head portion 120 provided at an upper end of the column portion 110. The head portion 120 is provided on the upper surface of the column portion 110,

At this time, the head portion 120 is formed with a cut-off belt wound therein, and a plurality of lead-out portions 121 formed vertically from the lower end to the upper end of the outer circumferential side and protruding to the outside are protruded. Here, the detailed structure of the above-described shut-off bar 100 is a known shut-off bar, and a detailed description thereof will be omitted.

The connecting part 200 is detachably connected to the upper part of the shutting bar 100. The connecting part 200 is connected to the head 200 through the connecting body 210, And can be detachably connected to the main body 120.

The connection unit 200 includes a connection body 210 detachably connected to a shutoff bar 100 to be connected and a first plate 220, .

Referring to the connection body 210, the connection body 210 is formed in a cylindrical hollow tube shape corresponding to the shape of the head part 120, So that it can be detachably fitted.

The connection body 210 has a plurality of insertion grooves 211 into which the lead portions 121 protruding from the head portion 120 are inserted and connected to the head portion 120, Relative rotation is prevented so that slip can be prevented.

The insertion groove 211 is vertically formed from the lower end to the upper end of the outer circumferential side of the connection body 210 according to a structure in which the connection body 210 is engaged with the lower part of the head part 120 from below, The shape of the insertion groove 211 is formed corresponding to the shape of the lead portion 121.

Here, the connecting part 200 has a cylindrical hollow tube shape corresponding to the shape of the cylindrical head part 120. However, the connecting part 200 may have various shapes depending on the shape and structure of the head part 120 Of course, it can be changed.

The first plate 220 is coupled to an upper portion of the connection body 210 and is formed in a circular plate shape and is positioned in a horizontal state and the rotation unit 400 is installed on the upper surface.

Next, the winding unit 300 will be described. The winding unit 300 is positioned above the connection unit 200 so that the blocking tape 10 is wound and rotated so that the user can rotate the winding unit 300 so that the blocking tape 10 is wound to adjust the tension. .

The winding unit 300 includes a second plate 330, winding bars 310 around which the blocking tape 10 is wound, an operation handle 320 for allowing the user to rotate the winding bars 310, .

The second plate 330 is spaced apart from the first plate 220 and is formed of a circular plate having the same shape and the same diameter as the first plate 220.

The lower ends of the winding bars 310 are fixedly coupled to the outer circumferential surface of the second plate 330 and are disposed in a direction perpendicular to the center of the second plate 330 so as to face each other.

The winding bar 310 is integrally formed with the second plate 330 and extends from the outer circumferential side of the second plate 330 at the time of manufacture and is extended perpendicularly to the second plate 330 at the time of assembly It is preferably formed by bending.

In the drawing, the winding bars 310 are formed as a pair facing each other so as to allow the blocking tape 10 to pass therethrough. When the blocking tape 10 is rotated, the blocking tape 10 can be wound around the outer circumferential surface, It goes without saying that various embodiments are possible as long as the above objects can be achieved in one preferred embodiment.

3 is a view showing another embodiment of the winding bar 310a. Referring to the drawing, the winding bar 310a is formed along the longitudinal direction to form a slit groove 311 in which the blocking tape 10 is smoothly fitted.

The slit grooves 311 have a problem in that they are tangled with each other or can be easily clumped upon winding due to the characteristics of the blocking tape 10 formed of a thin material such as vinyl or resin so that the blocking tape 10 is wound in a flat state .

The slit groove 311 is formed in such a manner that the upper portion of the slit groove 311 can be inserted into the slit groove 311 from the upper portion to the lower portion of the slit groove 311. However, May be formed to be open at the bottom and along the longitudinal direction at the top.

The operation handle 320 is coupled to the upper end of each of the winding bars 310 so that the user can rotate the winding bar 310 to adjust the tension of the blocking tape 10. In the drawing, the manipulation handle 320 is integrally extended from the winding bars 310, bent in the horizontal direction, and then connected to each other so that the user can grasp the horizontal manipulation handle 320 and rotate the manipulation handle 320.

Unlike the first embodiment, although not shown, the winding unit 300 may constitute a winding roll so that the blocking tape 10 is wound around the outer circumferential surface thereof. For this, the winding unit 300 may include a winding roll coupled to the upper surface of the second plate 330, and an operation unit.

The winding roll is formed in a cylindrical shape so as to protrude vertically from the center of the upper surface of the second plate 330, and the blocking tape 10 is wound along the outer peripheral side.

At this time, the winding roll is formed along the radial direction passing through the center, and the upper part is opened and the slit grooves 311 are formed along the longitudinal direction so that the blocking tape 10 is flatly fitted, And so on.

The operating portion is formed on the outer peripheral side of the upper end of the winding roll so that the user can rotate the winding roll to wind the blocking tape 10 to adjust the tension. Here, the operation portion may be an operation protrusion or an operation groove formed to protrude along the outer peripheral side of the upper end of the take-up roll, so that the operation portion can be easily gripped by the user.

4, the rotation part 400 is connected to the connection part 200 and the winding part 300 so that the winding part 300 is rotated by a user's operation and the blocking tape 10 is rotated in one direction And serves to adjust the rotation of the blocking tape 10 so as to be free to rotate in both the clockwise and counterclockwise directions.

In detail, the rotation unit 400 includes a rotation axis unit 450, a gear unit 410, a switch lever unit 420, and an elastic member 440. The rotary shaft portion 450 is vertically installed at a central portion between the first plate 220 and the second plate 330. The lower portion of the rotary shaft portion 450 is rotatably coupled to the first plate 220, And is fixedly coupled to the plate 330 so as to rotate along the rotation of the second plate 330.

In the drawing, the rotary shaft portion 450 is configured to be fastened to the coupling nut 451 through the first plate, the second plate, the gear portion, and the connecting body through the upper portion to the lower portion. Of course, can be applied.

The gear portion 410 is fixedly coupled to the rotary shaft portion 450 with the rotary shaft portion 450 as a center axis, rotates in accordance with rotation of the rotary shaft portion 450, and a ratchet gear 411 is formed on the outer peripheral surface thereof.

The switch lever portion 420 pivots about a hinge shaft 430 coupled to the first plate 220 or the second plate 330 and rotates according to a user's operation to rotate the gear portion 410 The rotation is controlled so as to be one-directional rotation or bidirectional rotation (pre-rotation).

Specifically, the switch lever unit 420 includes a lever body 421, a first lever 422, and a second lever 423. The hinge shaft 430 is rotatably coupled to the center of the lever body 421. The hinge shaft 430 is rotatably coupled to the center of the ratchet gear 411, (Not shown).

The lever body 421 has a fitting portion 4211 fitted at the tip end thereof to engage with the gear groove of the ratchet gear 411 so that the fitting portion 4211 can be selectively inserted into the ratchet gear 411 So as to control the rotation so that the gear portion 410 rotates in one direction.

The first lever 422 extends outward from the lever body 421 so that the user can operate the lever body 422 and is positioned in front of the hinge shaft 430 to rotate the lever body 421.

The second lever 423 is spaced apart from the rear of the first lever 422 and extends outwardly of the lever body 421 so as to be operable by a user. The second lever 423 is positioned behind the hinge shaft 430, (421).

The first lever 422 and the second lever 423 are connected to each other through a first plate 220 and a second lever 423, And the second plate 330 can be minimized. This is to prevent a safety accident by minimizing a portion exposed during a lever operation, and it is an object of the present invention to prevent a safety accident by minimizing exposure of a lever, This is to effectively prevent an accident from occurring.

The operation of the first lever 422 and the second lever 423 will be described below. First, the switch lever portion 420 is engaged with the ratchet gear 411 so that the gear portion 410 The first lever 422 is positioned between the first plate 220 and the second plate 330 and the second lever 423 is exposed to the outside.

The second lever 423 is positioned between the first plate 220 and the second plate 330 and the second lever 423 is positioned between the first lever 220 and the second plate 330. On the other hand, when the fitting portion 4211 is rotated to rotate the gear portion 410 bidirectionally, 422 are exposed to the outside. Accordingly, the user can selectively manipulate the exposed first lever 422 or the second lever 423 to adjust the rotational direction of the gear portion 410.

The switch lever portion 420 positions the first lever 422 on the front side of the hinge shaft 430 and the second lever 423 on the rear side of the hinge shaft 430, So that the turning operation of the lever body 421 can be divided and rotated through the first lever 422 and the second lever 423, thereby minimizing the degree of exposure to the outside, thereby effectively preventing safety accidents and the like.

One end of the elastic member 440 is connected to the switch lever portion 420 and the other end thereof is connected to the first plate 220 to elastically support the switch lever portion 420 so that the fitting portion 4211 of the lever body 421 Is resiliently fitted in the gear portion 410 and restored to its original position when the gear portion 410 rotates and turns.

The elastic member 440 is configured to elastically fit the fitting portion 4211 of the lever body 421 into the gear portion 410 as well as the lever body 411 in contact with the elastic member 440, 421 are held in the free rotation and unidirectional rotational position of the ratchet gear 411 according to whether the critical position is released or not in accordance with the rotation of the elastic member 440. [

A detailed description of the operation and configuration of the elastic member 440 can be applied to a configuration of the elastic member 440 configured to be known in the art, so that a detailed description thereof will be omitted, However, it is needless to say that various configurations such as a leaf spring can be applied as long as the above objects can be achieved.

5 is a view showing another embodiment of the winding unit 300a. Referring to the drawing, the winding unit 300a is configured such that the first shielding tape roll 20 wound with the shielding tape 10, which is not the middle part of the shielding tape 10, is fitted.

The winding portion 300a is provided with a roll-in portion 340 in which the lower end portion is erected perpendicularly to the center portion of the upper surface of the second plate 330 and in which the blocking tape roll 20 wound with the blocking tape 10 is inserted, ).

Here, it is preferable that the roll-in portion 340 is formed with a locking groove or a locking protrusion on a side contacting with the blocking tape roll 20 so that relative rotation with the blocking tape roll 20 is prevented.

The winding portion 300a may be provided on the tape core portion located at the center of the blocking tape roll 20 so as to prevent slippage between the roll-in portion 340 and the blocking tape roll 20, And a tape fitting portion which is detachably inserted and into which a roll fitting portion 340 is inserted into an inner circumferential side surface in the form of a hollow pipe and a polygonal flat end surface shape of the inner circumferential side is formed, Sectional shape of the tape fitting portion may be formed in a polygon corresponding to the flat cross-sectional shape of the tape fitting portion so as to be engaged with the tape fitting portion.

The roll-in portion 340 may be formed in the rotation direction of the rotation unit 400 rotating in one direction so as to control the pull-out locking and the pull-out of the blocking tape 10 in the blocking tape roll 20 wound with the blocking tape 10 And a fitting direction setting portion for fitting the blocking tape roll 20 only in a predetermined direction can be formed in correspondence with the direction in which the blocking tape 10 is pulled out.

In this case, the fitting direction setting unit is configured to form a first multifunctional layer having a flat area that widens toward the lower portion of the roll-in portion 340, and the tape fitting portion has a smaller flat area as it goes down to correspond to the first multifunctional layer The second multistage layer can be formed, and the direction of bonding can be limited through the multistage structure.

Hereinafter, a use example of the blocking tape fixing unit described above with reference to FIGS. 6 and 7 will be described. 6, after the blocking tape 10 is pulled out from the first blocking tape roll 20 in a state where the blocking tape fixing unit is fitted in each of the blocking bars 100, ).

The stopper tape roll 20 is inserted into the roll-in portion 340 so that the ratchet gear 411 is pulled out in a direction other than the rotation of the ratchet gear 411. When the stopper tape 10 is pulled out, So that the rotation unit 400 is rotated in both directions. After completion of the drawing operation, the lever is rotated to be rotated in one direction so that the drawing of the blocking tape 10 is blocked. Here, the blocking tape roll 20 is fitted into the roll-receiving portion 340 in a predetermined direction through the fitting direction setting portion.

After connecting the blocking tape 10 to each of the blocking tape fastening units in this manner, the switch lever portion 420 of the rotating portion 400 in which the first blocking tape roll 20 is inserted is operated to pull out the blocking tape 10 The blocking tape 10 is wound around the winding bar 310 as shown in FIG. 7 to adjust the tension of the blocking tape 10 so that the blocking tape 10 is placed horizontally do. At this time, as the rotation of the winding bar 310 is increased, the blocking tape 10 is greatly wound and the tension is increased, and the user can easily rotate the winding bar 310 according to the environment and easily tension the blocking tape 10 You can adjust it.

It is to be understood that the invention is not limited to the disclosed embodiment, but is capable of many modifications and variations within the scope of the appended claims. It is self-evident.

The present invention relates to a barrier tape fixing unit for applying a tensile force to a barrier tape installed to control the entrance and exit of a person so that both ends can be fixedly installed. Therefore, it is economical to reduce the burden of cost increase for expanding the blocking area, and it is easy to maintain and store. By minimizing the exposed portion of the switch lever portion, Can be effectively prevented.

10: blocking tape 20: blocking tape roll
100: a shut-off bar 110:
120: head part 121:
200: connection part 210: connection body
211: insertion groove 220: first plate
300, 300a: winding section 310, 310a: winding bar
311: Slit groove 320: Operation handle
330: second plate 340: roll-
400: rotation part 410: gear part
411: ratchet gear 420: switch lever part
421: Lever body 4211:
422: first lever 423: second lever
430: hinge shaft 440: elastic member
450:

Claims (10)

A connecting portion detachably connected to the member to be connected;
A winding unit positioned at an upper portion of the connection unit to rotate the blocking tape so as to rotate and adjust the tension of the blocking tape in accordance with rotation;
And a rotation part connected to the connection part and the winding part to rotate the winding part by a user's operation and to control the rotation of the winding part,
The connecting portion
A connection body detachably connected to the connection target member,
And a first plate formed on an upper portion of the connection body and having the rotation portion,
The winding unit
And a second plate spaced apart from the upper portion of the first plate to form a lower end of the winding portion,
The rotation unit includes:
The first plate is vertically installed between the first plate and the second plate, the lower portion is rotatably coupled to the first plate, the upper portion is fixedly coupled with the second plate, A rotary shaft portion,
A gear portion provided between the first plate and the second plate, the gear portion fixedly coupled to the rotary shaft portion with a central axis and having a ratchet gear formed on an outer circumferential surface thereof,
A switch lever portion which pivots about a hinge shaft coupled to the first plate or the second plate and turns according to a user's operation to control rotation of the gear portion,
And an elastic member having one end connected to the switch lever portion and the other end connected to the second plate or the first plate to elastically support the switch lever portion.
delete The method according to claim 1,
The winding unit
Winding bars which are arranged in a direction perpendicular to the outer surface of the second plate so as to be opposed to each other with respect to a central portion of the second plate,
Further comprising an operation handle coupled to an upper end of each of the winding bars to allow the user to rotate the winding bar to adjust the tension of the blocking tape.
The method of claim 3,
The wind-
And a slit groove is formed in which the upper portion is opened and formed along the longitudinal direction so that the blocking tape is flatly fitted.
The method according to claim 1,
The winding unit
And a slit groove formed on the upper surface of the second plate so as to allow the blocking tape to be wound along an outer circumferential side thereof and to have an upper portion thereof opened along the longitudinal direction, Further comprising a plurality of shielding tape fastening units.
delete delete The method according to claim 1,
Wherein the first plate and the second plate are each formed of a circular plate having the same shape and the same diameter,
Wherein the rotary shaft portion is installed at a central portion of the first plate and the second plate.
The method according to claim 1,
The object to be connected,
A column portion which is erected in a vertical direction,
And a head portion provided at an upper end of the column portion and having a cut-off belt wound therein, and one or a plurality of draw-out portions protruding outward from the cut-off belt are protruded.
10. The method of claim 9,
The connecting portion
A hollow tube having an open bottom and a closed top and being removably fitted around the top of the head and having one or a plurality of insertion grooves formed vertically from a lower end to an upper side of the outer circumferential side, And a body (3).

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