KR102097280B1 - Expander having multi lever - Google Patents

Abstract

The present invention relates to an expander having a multi-lever for use in expanding a synthetic resin tube such as a Teflon-based PFA tube, which is a cylindrical body having a through hollow portion, and an expansion tube basic body having a predetermined length; A guide member inserted into and fixed to the rear end of the expansion tube main body, and formed with a support coupling groove of an upper opening structure for coupling with a second handling lever part; A shaft which is inserted through the guide member and is screwed to the guide member side through a threaded portion formed in the middle portion to be provided back and forth; It is coupled to the front end of the shaft and is fixedly disposed, located inside the expansion tube main body, and an expansion tube jig having an outer stepped structure for expansion processing; A first handling lever part fixedly coupled to the rear end of the shaft to handle the shaft and the expansion jig coupled thereto forward and backward within the expansion base body according to rotational adjustment in a clockwise or counterclockwise direction; It is fastened to the threaded part of the shaft while being inserted and disposed on the support coupling groove side of the guide member fixedly arranged at the rear end of the expansion tube body, and moves in the left and right directions to form a gear coupling structure for handling adjustment. It characterized in that it comprises; a second handling lever portion for handling the shaft and the expansion pipe jig coupled thereto according to the position forward and backward in the expansion pipe body.
According to the present invention, by providing two handling lever parts capable of controlling the shaft and the expansion jig coupled thereto forward and backward, it is possible to select and use either one according to the field situation, such as the working space or location, so it is easier to expand the tube than the prior art. It is possible to perform the expansion operation stably through the configuration of the tube fixing clamping process, and can provide a useful effect of improving the inconvenience and disadvantages of the conventional tube expansion operation.

Description

Expander with multi-lever {EXPANDER HAVING MULTI LEVER}

The present invention relates to a tube expander used to expand the end of a tube such as a Teflon-based PFA tube, and more specifically, a shaft and two handling lever parts capable of controlling forward and backward control of the expansion jig coupled thereto are provided. It relates to a dilator equipped with a multi-lever so that it can be selected and used according to the working space or location to facilitate the swelling while stably and to improve the inconvenience and disadvantages of the conventional tube dilating operation. .

In general, the tube expander is used to expand the diameter of the tube, and is a tool that facilitates the connection between tubes through expansion of the end of the tube, and is often used to install a transfer line through the tube. .

For example, in the field of pharmaceutical manufacturing, when installing a transport line for manufacturing and transport of pharmaceuticals, the transport line is made using Teflon-based Perfluoroalkoxy (PFA) tube to utilize various advantages such as excellent crack and stress resistance or chemical resistance. We are building a lot, and in this way, we are expanding the PFA tube using an expander in the field when connecting or connecting parts to the tube for the construction of the transfer line.

However, the conventional Teflon-based PFA tube may be heated during the expansion process using an expander, and the expansion part of the tube may be heated for the expansion process, which has a great disadvantage of heat loss, and inconvenience during tube expansion in the field. There was a problem with difficulty.

Incidentally, during tube expansion, the PFA tube was slippery due to the physical properties of the material, making it difficult to expand the tube, and this resulted in a problem that the installation of the transfer line was lengthened. In addition to the phenomenon of being pushed back, there was a problem in that quality defects such as eccentricity or distortion after expansion were generated.

In addition, in the related art, there is an inconvenience in that the expansion posture is unstable when the PFA tube is fixed or connected and the valve box is installed in a narrow space, such that the expansion work and the transfer line installation work are difficult.

On the other hand, in the prior art documents related to conventional tube or pipe expanders, most of them propose and disclose expanders for metal tubes or pipes, such as copper (copper) or aluminum, and expanders for synthetic resin tubes or pipes such as PFA. Recently, the proposed technology could not be easily found.

Republic of Korea Registered Patent Publication No. 10-1546368 Republic of Korea Registered Patent Publication No. 10-1657293 Republic of Korea Registered Patent Publication No. 10-2017-0049072

The present invention is to solve the above problems and to be devised in view of this, the shaft and two handling levers that can control the expansion jig coupled thereto are connected, but can be selected and used according to the working space or location. It is an object of the present invention to provide a dilator equipped with a multi-lever so as to facilitate and stably perform work and to improve discomfort and disadvantages associated with conventional tube expansion.

The present invention allows the expansion of the tube by heating the tube with a hot air fan by providing the expansion tube main body in an open structure, thereby reducing heat loss, and the tube is slippery during tube expansion work, making it difficult to expand the tube. The purpose of the present invention is to provide a dilator equipped with a multi-lever so as to reduce the quality defects such as eccentricity and distortion as well as to improve the phenomenon that the dilator is pushed backward due to the strong contracting force.

The present invention makes it easy to carry out the transfer line work by allowing the tube to be fixed or connected in a narrow space and to be used by expanding it in the field when installing a valve box, etc., and the handle of the handling lever is handled according to the work space or situation. The purpose of the present invention is to provide a dilator equipped with a multi-lever so as to implement convenience such as selectively detachable / mountable use.

An object of the present invention is to provide an expander having a multi-lever that can be carried and used on a work space when working with a transport line using a tube such as a drug transport line.

A dilator equipped with a multi-lever to achieve the above object is a cylindrical body having a through hollow portion, a dilator base having a predetermined length; A guide member inserted into and fixed to the rear end of the expansion tube main body, and formed with a support coupling groove of an upper opening structure for coupling with a second handling lever part; A shaft which is inserted through the guide member and is screwed to the guide member side through a threaded portion formed in the middle portion to be provided back and forth; It is coupled to the front end of the shaft and is fixedly disposed, located inside the expansion tube main body, and an expansion tube jig having an outer stepped structure for expansion processing; A first handling lever part fixedly coupled to the rear end of the shaft and handling the shaft and the expansion jig coupled to the shaft forward and backward within the expansion tube body according to rotational adjustment in a clockwise or counterclockwise direction; It is fastened to the threaded part of the shaft while being inserted and disposed on the support coupling groove side of the guide member fixedly arranged at the rear end of the expansion tube body, and moves in the left and right directions to form a gear-engaging structure for handling adjustment. It characterized in that it comprises; a second handling lever portion for handling the shaft and the expansion pipe jig coupled thereto according to the position forward and backward in the expansion pipe body.

Here, the expansion tube main body is formed with a tube fixing portion for inserting and fixing a tube for expansion treatment at the distal end of the cylindrical body, an opening is formed to expose the support coupling groove of the guide member at the upper end, and the middle By forming an intermediate opening with an open structure by incision to the upper part of the part, the expansion tube can be configured to be exposed within the expansion tube body.

Here, the tube fixing portion is provided with a structure that is separated from the lower portion, but consists of a clamp-type tube jig having a fastening groove and a hinge groove coupled to the lower side of the upper side and having a fastening groove. The fastening lever is hinged to be provided for rotation, and the fastener is configured to be coupled to the upper end, and the fastening tube is inserted into the fastening groove side of the tube jig. It can be configured to be stably fixed to.

Here, by attaching a rubber pad to the inner surfaces of the upper and lower parts can be configured to increase the fixing force to the tube by increasing the adhesion to the tube for the tube expansion.

Here, the first handling lever portion is inserted into the rear end of the shaft and fixed and formed into a multifaceted structure corresponding to each other, and a rotating lever, a handle coupled to the rotating lever, and a departure from the rotating lever It is possible to have a configuration including a polygonal cap nut fastened to the shaft side to prevent.

Here, the second handling lever part is inserted and arranged on the support coupling groove side of the guide member, and is supported and coupled to move in the left and right directions, and a ratchet body coupled with the ratchet body and a through hole formed at the lower end thereof. , The gear is disposed in the through-hole of the ratchet body and screwed to the threaded portion of the shaft, and has gear teeth on the outer circumferential surface, and is located on the left and right sides of the outer circumferential surface of the gear, is disposed relative to the gear teeth, and engaged in the gear teeth to rotate in one direction on the left or right A pair of left and right latches to be provided, a latch lever positioned between the left and right latches and serving as a lever for the selective locking function of the left and right latches, and the latching levers engaged with the left and right latches according to the left or right arrangement direction It serves to select and control functions and is located on the front of the ratchet body and It is possible to have a configuration that includes a lever handle that is provided so that the end portion is exposed to the outside.

According to the present invention, by providing two handling lever parts capable of controlling the shaft and the expansion jig coupled thereto forward and backward, it is possible to select and use either one according to the field situation, such as the working space or location, so it is easier to expand the tube than the prior art. It is possible to perform the expansion operation stably through the configuration of the tube fixing clamping process, while providing a useful effect to improve the inconvenience and disadvantages of the conventional tube expansion operation.

According to the present invention, as the upper portion of the expansion tube body is formed into an open structure by incision, when the tube is fixed and expanded, the tube can be directly heated and heated by a hot air blower, thereby reducing heat loss compared to the prior art. It can improve the expansion efficiency, and the tube is clamped and fixed, so the tube is slippery during tube expansion, making it difficult to expand the tube and improving the phenomenon that the tube is pushed back due to the strong contractile force. It is possible to achieve a useful effect that can reduce quality defects such as eccentricity and distortion.

The present invention is an expander that can be used by expanding the tube immediately in the field when installing or connecting a tube or installing a valve box in a narrow space, and can easily carry out the transfer line work using the tube, depending on the working space or situation. It is a structure that allows the handles of each handling lever to be selectively detached or mounted to increase the convenience of work, and it is a useful effect that can be easily carried and used by the worker in the work space when working with a transport line using tubes such as pharmaceutical transport lines. Can provide.

1 is a perspective view showing an expander having a multi-lever according to an embodiment of the present invention.
2 is an exploded perspective view showing an expander with a multi-lever according to an embodiment of the present invention.
3 is a perspective view illustrating a state in which a tube, which is an object to be expanded, is fixedly placed on an expansion tube main body in an expander having a multi-lever according to an embodiment of the present invention.
4 is a perspective view showing a state in which a tube, which is an object to be expanded, is fixed on an expansion tube main body in an expander having a multi-lever according to an embodiment of the present invention.
5 is a perspective view illustrating a state in which a tube is expanded through a forward driving of a shaft and an expansion jig in an expander having a multi-lever according to an embodiment of the present invention.
6 is a perspective view showing a state of discharging from a dilator base body after dilating one end of a tube through an dilator equipped with a multi-lever according to an embodiment of the present invention.

When explaining a preferred embodiment of the present invention with reference to the drawings as follows, through the detailed description and drawings, it will be possible to better understand the object and configuration of the present invention and features accordingly.

1 for explaining a preferred embodiment of the present invention is a perspective view showing an expander with a multi-lever according to an embodiment of the present invention, and FIG. 2 is an expander with a multi-lever according to an embodiment of the present invention 3 is an exploded perspective view illustrating a state in which a tube, which is an object to be expanded, is fixedly arranged on an expansion tube main body in an expander having a multi-lever according to an embodiment of the present invention, and FIG. In the expander with a multi-lever according to an embodiment of the present invention, a perspective view showing a state in which a tube, which is an object to be expanded, is fixed on an expansion tube main body, and FIG. 5 is an expansion with a multi-lever according to an embodiment of the present invention It is a perspective view for explaining the state of expanding the tube through the forward driving of the shaft and the expansion tube in the pipe, and FIG. 6 is provided with a multi-lever according to an embodiment of the present invention After the flaring process to the one end of the tube through a relaxation is a perspective view showing a discharge state from the expansion body relaxation.

When explaining the expander 100 having a multi-lever according to an embodiment of the present invention with reference to Figures 1 to 6 described above.

The dilator 100 with a multi-lever according to an embodiment of the present invention, as shown in Figs. 1 to 6, the dilator basic body 110, the guide member 120, the shaft 130, the dilator jig 140 ), A first handling lever unit 150, and a second handling lever unit 160.

The expansion base body 110 forms a predetermined length and is provided with a cylindrical body having a through hollow portion.

At this time, the tube extension body 110 is formed with a tube fixing part 111 for inserting, placing, and fixing the tube 1 for tube expansion to the body side at the distal end of a cylindrical body having a certain length, and the upper end of the tube The opening 112 is formed so that the support coupling groove 121 formed in the guide member 120 is exposed, and the expansion opening jig is formed by forming the intermediate opening portion 113 in an open structure by incision about the upper portion of the middle portion ( 140) is configured to be disposed exposed within the expansion tube body (110).

Here, the tube fixing part 111 is provided with a structure in which the upper portion is separated from the lower part by dividing the cylindrical body having a through hollow portion into half, but the upper side is hinged 101 to the lower side to allow rotation. It is composed of a clamp-type tube jig (111a) having a mounting and fastening groove (111a-1), and the hinge 102 is coupled to the fastener lever (111b) on the other side of the lower side so that it can be rotated and provided with a fastener ( 111c) is configured to be coupled, and the tube 1 for expansion treatment according to the tightening in the state in which the fastener 111c is inserted into the fastening groove 111a-1 side of the tube jig 111a, the expansion base body 110 ) Can be configured to be fixed more stably.

In addition, by attaching a rubber pad 114 to the inner surfaces of the upper and lower portions of the tube fixing part 111, the adhesion to the tube 1 for expansion treatment is fixed by insertion and placement on the expansion tube main body 110, thereby increasing It is preferable to configure to increase the fixing force to the tube (1).

As described above, in constructing the expansion tube main body 110, the tube jig 111a is formed in a clamp type with respect to the tube fixing part 111, and the fasteners 111b and fasteners 111c are mounted to tighten the tube. As it provides a fixing force and is provided by attaching a rubber pad 114 to the inner surface, as shown in FIGS. 3 and 4, the tube 1, which is the object to be expanded, can be clamped and fixed on the tube 110, thereby preventing the tube ( Since it can greatly improve the fixation to 1) and prevent the tube (1) from moving during tube expansion, it is possible to improve the quality defects such as eccentricity or dents, which are frequently generated during the conventional tube expansion, and the tube (1) is stable. Since it is possible to fix the tube itself, the tube itself is slippery, so it is difficult to expand the tube and it is possible to improve the conventional shortcomings that were inconvenient. It can provide advantages.

In addition, it is preferable to form the tube arrangement line 107 on the inner surface of the expansion tube main body 110 so that the fixed arrangement of the tube 1 can be formed by precisely processing the guide and the expansion tube.

The guide member 120 is inserted into the rear end of the expansion base body 110 and fixedly arranged to form a circular block body, but has an upper opening structure for coupling with the second handling lever portion 160 in the middle. Support coupling groove 121 is formed, having a hollow 122 for the through-placement of the shaft 130 in the center, but the corresponding thread for screwing with the thread portion 131 formed in the middle portion of the shaft 130 side It is formed on the inner surface.

At this time, the guide member 120 is provided with a stepped portion 123 having an outer diameter that extends to the outermost surface of the rear end so that it can be arranged to be jammed by the stepped portion 123 when fixed to the expansion tube body 110. This is preferred.

Here, the guide member 120 is inserted into the expansion base body 110, and after inserting two or three screws 106, the fixing arrangement is more stably fixed and the forward and backward movements according to the coupling with the shaft 130 are smooth. It is preferable to be provided so that it can be performed.

The shaft 130 is inserted through the hollow 122 of the guide member 120 that is fitted into the expansion tube main body 110, through the threaded portion 131 formed in the middle portion and the guide member 120 side It is screwed and provided for forward and backward movement.

At this time, the shaft 130 is formed with a lever engaging portion 132 having a multi-faceted surface for coupling with the first handling lever portion 150 and a threaded structure for nut fastening at the rear end portion, and an expansion jig 140 at the front end portion A jig coupling portion 133 having a leading thread for coupling with it is formed.

The expansion jig 140 is fixed to the jig coupling portion 133 on the front end side of the shaft 130 and is disposed inside the expansion tube main body 110 and has a diameter through an outer stepped structure for expansion treatment It is a body having an expanded dilated portion and a hollow 141 for coupling with the shaft 130 is formed.

At this time, when the expansion jig 140 is coupled to the shaft 130 side, the washers 103 and 104 may be used, and the jig cap 105 is coupled to the front end of the hollow 141.

Here, the expansion jig 140 is to move forward and backward together during driving forward and backward of the shaft 130 through the coupling with the shaft 130.

The first handling lever portion 150 is fixedly coupled to the rear end portion of the shaft 130, and rotates and adjusts the shaft 130 according to rotational adjustment in a clockwise or counterclockwise direction with respect to a horizontal plane to be operated back and forth. And, it is a configuration that handles the expansion pipe jig 140 coupled to the shaft 130 at the same time back and forth within the expansion pipe body 110.

At this time, the first handling lever portion 150 is inserted into and fixed to the rear end of the shaft 130, and the shaft 130 side through the coupling portion of the polygonal structure corresponding to the lever engaging portion 132 of the shaft Rotation lever 151 to be coupled, the handle 152 coupled to the rotation lever 151, and fastened to the rear end of the lever engaging portion 132 side of the shaft 130 to prevent the rotation lever 151 from disengaging It can be made to have a configuration including a polygonal nut 153.

Accordingly, as shown in FIG. 5, the shaft 130 and the expansion jig 140 may be advanced by holding the handle 151 and rotating the rotary lever 151 to adjust the rotation, and the expansion jig 140 is a tube ( 1) As it is inserted into the side, it is possible to perform an expansion operation of expanding one side end of the tube 1 through pressing and traction.

The second handling lever portion 160 is inserted into the support coupling groove 121 side of the guide member 120 fixedly arranged at the rear end portion of the expansion base body 110, and the intermediate thread portion of the shaft 130 ( 131) is configured to have a gear coupling structure that can be adjusted by handling in the left and right directions with respect to the vertical plane while being fastened to 131), and the shaft 130 and the expansion jig 140 coupled thereto according to the position of the lever handle 166 when adjusting the handling ) Is a configuration to handle forward and backward within the expansion tube body (110).

At this time, the second handling lever part 160 is inserted and disposed on the support coupling groove 121 side of the guide member 120, but is supported and coupled to move in the left-right direction based on the vertical surface, and the through-hole 161a at the lower end The formed ratchet body 161, the ratchet handle 162 coupled to the upper part of the ratchet body 161, and the intermediate thread portion of the shaft 130 disposed in the through hole 161a of the ratchet body 161 The gear 163 which is screwed to the 131 and has gear teeth on the outer circumferential surface, is located on the upper left and right sides of the outer circumferential surface of the gear 163, is disposed relative to the gear gear, and the gear 163 has a lower end so as to be locked. Or a pair of left and right locking claws 164 to have a one-way rotation on the right, and located between the left and right locking claws 164, the right and left clasps 164, a claw crowbar 165 serving as a lever for selective locking function, On the ratchet body (161) It is combined with the support brace lever 165 while being supported, and serves to select and control the locking function for the left and right braces 164 according to the left or right arrangement direction, and the position and end portions of the front end of the ratchet body 161 It is possible to have a configuration including a lever handle 166 that is exposed to the outside and is provided to adjust the left and right arrangement directions, and a cover plate 167 that is coupled to the rear surface of the ratchet body 161.

As an example, when the lever handle 166 is disposed in the left direction, the latch lever 165 lifts the latch located at the left side to rotate and adjust the gear 163 in the right direction to move the ratchet body 161 to move the gear The shaft 130 and the expansion jig 140 may be advanced as the 163 is rotated and adjusted. On the contrary, when the lever handle 166 is disposed in the right direction, the latch lever 165 is positioned on the right side. By lifting and allowing the gear 163 to be rotationally adjustable in the left direction, the shaft 130 and the expansion jig 140 may be reversed by moving the ratchet body 161 to adjust the rotation of the gear 163.

In addition, the shaft 130 and the expansion jig 140 may be configured to operate in the reverse direction in the opposite form of the above example.

Here, the left and right locking claws 164 are arranged such that the upper end is supported and coupled to the ratchet body 161 side, and the lower end is engaged with the gear teeth of the gear 163, and the locking lever 165 has a lower center of the ratchet body ( 161) Arranged to be supported on the side and rotated to the left and right, connected to the lever handle 166 and simultaneously moved according to the left or right arrangement direction of the lever handle 166 to exert a selective locking function on the left and right clamps 164 It is provided to.

As described above, in the present invention, the shaft is provided as the first handling lever part 150 and the second handling lever part 160 having different arrangement directions with respect to the arrangement direction and the shaft 130 side on the expansion tube main body 110 are provided. Since the operator can select and perform the forward and backward driving of the 130 and the expansion tube 140, the work space or the worker's work during the work for connecting the tube 1 having the expansion tube 1a on the transfer line It is possible to select and use any one of the two according to the position, and by providing the first handling lever unit 150 and the second handling lever unit 160, it is possible to easily perform expansion work on any work space and is stable. It can be carried out to improve the inconvenience and disadvantages of the conventional tube expansion operation.

In addition, even when using the first handling lever portion 150 and the second handling lever portion 160, the respective handle lever portion side handles 152 and 162 are selectively detachable according to the working conditions such as the working space or the position of the operator. As a configuration that can be mounted or used, work convenience can be realized.

Accordingly, when installing the transfer line using the tube, it can be easily expanded and used in the field even in a narrow space, and it is possible to fix the tube in a narrow space, to connect, and to facilitate the installation of the valve box, etc. As a result, it is possible to provide an advantage of easily performing a transfer line operation as compared to the prior art.

On the other hand, in the present invention, by forming the intermediate opening portion 113 by incision with respect to the duct tube base 110, the dilator jig 140 is exposed and disposed within the duct tube base 110 through an open structure. Since the expansion jig 140 and the tube 1 are exposed, as shown in FIG. 5, the expansion of the tube 1 can be expanded while hot air is heated using a hot air fan, thereby reducing heat loss compared to the prior art. The state can provide an advantage that the tube can be expanded.

Thus, through the dilator 100 equipped with the multi-lever according to the present invention having the above-described configuration, the tube 1 can be easily and stably dilated at one end of the tube 1 without any quality defects such as eccentricity or distortion. ) Can be formed on the side of the dilated portion 1a, and in FIG. 6, the tube 1 is dilated using the dilator 100 of the present invention.

The embodiments described above are merely for explaining preferred embodiments of the present invention, and are not limited to these embodiments, and various modifications and modifications by those skilled in the art within the technical spirit and claims of the present invention. It will be said that this can be made, which will fall within the technical scope of the present invention.

100: expander equipped with multi-lever 110: expander basic body
120: guide member 130: shaft
140: expansion jig 150: first handling lever part
160: second handling lever part

Claims (6)

Being a cylindrical body having a through hollow portion, the expansion base body having a predetermined length;
A guide member inserted into and fixed to the rear end of the expansion tube main body, and formed with a support coupling groove of an upper opening structure for coupling with a second handling lever part;
A shaft which is inserted through the guide member and is screwed to the guide member side through a threaded portion formed in the middle portion to be provided back and forth;
It is coupled to the front end of the shaft and is fixedly disposed, located inside the expansion tube main body, and an expansion tube jig having an outer stepped structure for expansion processing;
A first handling lever part fixedly coupled to the rear end of the shaft to handle the shaft and the expansion jig coupled thereto forward and backward within the expansion base body according to rotational adjustment in a clockwise or counterclockwise direction;
It is fastened to the threaded part of the shaft while being inserted and disposed on the support coupling groove side of the guide member fixedly arranged at the rear end of the expansion tube body, and moves in the left and right directions to form a gear coupling structure for handling adjustment. A second handling lever unit for handling the shaft and the expansion pipe jig coupled thereto according to the position forward and backward in the expansion pipe body; Expander with a multi-lever characterized in that it comprises a. According to claim 1,
The expansion tube main body is formed with a tube fixing part for inserting and fixing a tube for expansion tube treatment at a distal end of a cylindrical body, an opening is formed at an upper portion of the rear end to expose a supporting coupling groove of the guide member, and an upper portion of the middle portion is formed. A dilator with a multi-lever, characterized in that the dilator jig is exposed within the dilator base by forming an intermediate opening with an open structure due to the incision. According to claim 2,
The tube fixing part has a structure in which the upper part is separated from the lower part, but is composed of a clamp type tube jig having a fastening groove and a rotation groove by hingedly coupling one upper part to the lower one side, and a fastening lever on the lower other side. The hinge is coupled to enable rotation, and the fastener is configured to be coupled to the upper part, and the tube for expansion treatment is stably mounted on the expansion tube base by tightening the fastener in the insertion state in the fastening groove side of the tube jig. Expander with a multi-lever, characterized in that configured to be fixed. According to claim 3,
The expander with a multi-lever, characterized in that a rubber pad is attached to the inner surfaces of the upper and lower parts to increase the adhesion to the tube for expanding the tube to increase the fixing force to the tube. According to claim 1,
The first handling lever portion is inserted into the rear end of the shaft and fixed,
A rotary lever formed in a polygonal surface structure corresponding to the shape of the rear end of the shaft and coupled to the shaft side;
A handle coupled to the rotary lever; And
Polygonal cap nut fastened to the shaft side to prevent the rotary lever from coming off
Expander with a multi-lever characterized in that it comprises a.
According to claim 1,
The second handling lever part is inserted and arranged on the support coupling groove side of the guide member, and is supported and coupled to move in the left and right directions, a ratchet body having a through hole formed in the lower end, a ratchet handle coupled to the ratchet body, and the ratchet A pair of gears arranged in a through-hole of the body and screwed to the threaded portion of the shaft and having gear teeth on the outer circumferential surface, and located on the left and right sides of the outer circumferential surface of the gear, are arranged relative to each other and engaged with the gear teeth to have left or right one-way rotation. Selecting the locking function for the left and right latches according to the left or right arrangement direction, and the locking levers positioned between the left and right latches and serving as a lever for the selective locking function for the left and right latches It acts as a control and is located on the front of the ratchet body and the ends A check Correlator includes a multi-lever comprises a lever handle that is provided with portions to be exposed.

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