KR20200109773A - Variable wrench - Google Patents

Abstract

The present invention relates to a variable wrench. An object of the present invention is to provide the variable wrench which can easily and quickly adjust a gap between a fixing cap and an engaging unit coupled to a fixing cap support unit without consuming a lot of force. The variable wrench according to one embodiment of the present invention includes: a base unit which has a predetermined length and wherein an accommodation space is formed; and a variable unit coupled to the base unit. The variable unit includes: a curved arm which extends while being curved in the direction away from the base unit and wherein the engaging unit is formed at the other end; and a variable coupling unit extending from one end of the curved arm. The base unit includes the fixing cap support unit formed at a position facing the engaging unit. A gap between the engaging unit and the fixing cap support unit is adjusted by rotational movement or linear movement of the variable unit.

Description

Variable wrench{VARIABLE WRENCH}

The present invention relates to a variable wrench capable of fastening pipes and joint pipes having various diameters.

In general, a pipe with a passage formed therein is widely used to move a fluid from one place to another.

Pipes usually have a circular cross section and are widely used in various living facilities and industrial facilities in the form of water pipes and gas pipes. The passage of the fluid constituted by the pipe is called a pipe, and the rational installation of the pipe in consideration of all matters is called a pipe.

In general, several pipes are connected in a line to form a pipeline. Joint pipes are used to connect one pipe to another. The joint pipe is also used to change the direction of the pipe or to connect pipes of different diameters.

Pipes and fittings can be joined to each other by various coupling structures. For example, the pipe and the joint pipe may be fastened by meshing the threads provided on the outer periphery of the pipe and the threads provided on the inner periphery of the joint pipe. In this way, the pipe and the joint pipe having the screw threaded fastening structure are coupled to each other by rotating the joint pipe while the pipe is fixed, or by rotating the pipe while the joint pipe is fixed.

A tool such as a wrench is used to connect a pipe and a joint pipe having a screw threaded connection structure.

When using a wrench according to the prior art, whenever the diameter of a pipe or a joint pipe to be fastened is changed, a wheel for adjusting the width must be manually turned in order to adjust the width of the jaw. When using a wrench that adjusts the width of the jaw by turning the wheel like this, there is a lot of force and power in the process of turning the wheel to match the width of the jaw with the diameter of the pipe or joint pipe and comparing the width of the jaw with the diameter of the pipe or joint pipe. There is a time consuming problem.

Also, the outer periphery of the pipe or joint pipe is made of a curved surface. However, the jaw of the wrench according to the prior art does not have a curved surface in the shape of a portion that contacts the outer periphery of a pipe or a joint pipe, so only a portion of the jaw contacts the outer periphery of the pipe or joint pipe. Accordingly, there is a problem that too much force is consumed because the force exerted by the user on the wrench when fastening the pipe or the fitting pipe cannot be transmitted as it is to the pipe or the fitting pipe. In addition, there is a problem that the wrench is often separated from the pipe or joint pipe when the user uses the wrench.

An object of the present invention is to provide a variable wrench that can easily and quickly adjust the gap between the fixing cap and the locking portion coupled to the fixing cap support without consuming a lot of force.

In addition, an object of the present invention is to provide a variable wrench that can more tightly tighten or loosen a fixing cap by consuming less force than the conventional one.

Another object of the present invention is to provide a variable wrench that can prevent the wrench from being separated from the fixing cap when tightening or loosening the fixing cap.

It is another object of the present invention to provide a variable wrench that can be used when connecting various types of pipes and joint pipes having different diameters.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention that are not mentioned can be understood by the following description, and will be more clearly understood by examples of the present invention. In addition, it will be easily understood that the objects and advantages of the present invention can be realized by the means shown in the claims and combinations thereof.

A variable wrench according to an embodiment of the present invention includes a base unit having a predetermined length and having an accommodation space formed therein, and a variable unit coupled to the base unit, wherein the variable unit is a direction away from the base unit And a curved arm extending while being curved and having a locking portion formed at the other end thereof, and a variable coupling portion extending from one end of the curved arm, and the base unit includes a fixed cap support portion formed at a position facing the locking portion, and the The distance between the locking part and the fixed cap support part is adjusted by the rotational movement or linear movement of the variable unit.

In one embodiment of the present invention, a rotation coupling portion to which the variable unit is movably coupled is formed on both side walls of the receiving space of the base unit, and both sides of the variable coupling portion have a predetermined length and the rotation coupling portion is accommodated. A connecting rail is formed.

In addition, in an embodiment of the present invention, the base unit is disposed between the rotational coupling part and the curved arm, and the opposite side of the curved arm around the first holder and the rotational coupling part in contact with one side of the variable unit. And a second holder disposed on and in contact with the other side of the variable unit.

In addition, in one embodiment of the present invention, the variable unit is disposed at a predetermined interval along the length direction of the variable coupling portion and includes one or more size adjustment grooves corresponding to the interval between the locking portion and the fixing cap support portion.

In addition, in one embodiment of the present invention, the distance between the locking portion and the fixing cap support portion is determined according to the position of the size adjustment groove.

In addition, in one embodiment of the present invention, an end of the second holder of the base unit is formed with a fixing protrusion that engages with a size adjustment groove formed in the variable coupling portion.

In addition, in one embodiment of the present invention, the base unit is formed on one side of the base unit and includes an indicator for indicating a distance between the locking portion and the fixing cap support portion.

In addition, in one embodiment of the present invention, the base unit includes a guide portion extending from one end of the first holder and having a predetermined curvature, and at a point where one end of the first holder and one end of the guide portion meet, the fixing cap Support is formed.

In addition, in an embodiment of the present invention, the locking portion is supported by a convex portion formed on an outer surface of the fixing cap coupled to the joint pipe, and the fixing cap support portion is supported by the outer surface of the fixing cap.

The variable wrench according to the present invention has the advantage of being able to quickly and easily adjust the gap between the fixing cap and the fixing cap support part without consuming a lot of force.

In addition, the use of the variable wrench according to the present invention has the advantage of being able to tighten or loosen the fixing cap more easily by consuming less force than the conventional one.

In addition, when the variable wrench according to the present invention is used, there is an advantage of preventing the wrench from being separated from the fixing cap when tightening or loosening the fixing cap.

In addition, according to the present invention, there is an advantage of being able to connect various types of pipes and joint pipes having different diameters using one variable wrench.

1 is an exploded perspective view of a pipe and a joint pipe to which the present invention is applied.
2 is a perspective view showing a state in which a pipe and a joint pipe to which the present invention is applied are combined.
3 is a perspective view of a variable wrench according to an embodiment of the present invention.
4 is an exploded perspective view of a variable wrench according to an embodiment of the present invention.
5 is a partial cross-sectional view of a variable wrench according to an embodiment of the present invention.
Figure 6 shows the operating state of the variable wrench according to an embodiment of the present invention.
7 to 10 show step-by-step a state in which the distance between the locking part of the variable wrench and the fixing cap support part is adjusted according to an embodiment of the present invention.
11 and 12 show a state in which the fixing cap is tightened using a variable wrench according to an embodiment of the present invention.
13 and 14 show a state in which a fixing cap is released using a variable wrench according to an embodiment of the present invention.

The above-described objects, features, and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, one of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or similar elements.

1 is an exploded perspective view of a pipe and a joint pipe to which the present invention is applied, and FIG. 2 is a perspective view showing a state in which a pipe and a joint pipe to which the present invention is applied are combined.

First, the structure and coupling/separation method of the pipes 10 and 15 and the joint pipe 20 coupled by the variable wrench according to the present invention will be described with reference to FIGS. 1 and 2.

For reference, the coupling pipe 20 shown in FIGS. 1 and 2 is shown to have a straight shape, but in other embodiments, the coupling pipe 20 may be formed in various shapes such as a'Y' shape or a'A' shape. have.

As shown in the drawing, a joint pipe 20 is disposed between the pipe 10 to be connected and another pipe 15. Both ends of the joint pipe 20 are coupled to one end of the pipe 10 and one end of the pipe 15, respectively. In addition, the pipes 10 and 15 coupled to both ends of the joint pipe 20 are connected to each other through the joint pipe 20.

The fitting pipe 20 includes a socket 30 and a first screw coupling portion 32 formed at both ends of the socket 30.

The first screw coupling portion 32 is formed in the shape of a screw thread and a screw bone on the outer peripheries of both ends of the socket 30.

In addition, accommodating portions 34 for accommodating sealing members 50 to be described later are formed at inner peripheries of both ends of the socket 30. The receiving portion 34 has the same diameter as the sealing member 50, and may be formed stepped on the inner peripheral surface of the socket 30 or formed in a groove shape to accommodate or support the sealing member 50.

In addition, pipe support portions 35 for supporting pipes 10 and 15 inserted into both ends of the socket 30 are formed on the inner surface of the socket 30. The pipe support 35 is formed to be stepped on the inner surface of the socket 30 so as to correspond to the outer diameters of the pipes 10 and 15. When the pipes 10 and 15 are inserted at both ends of the socket 30, the ends of the pipes 10 and 15 are supported by the pipe support 35.

The fixing cap 40 is coupled to both ends of the socket 30, respectively. A second screw coupling portion 42 meshing with the first screw coupling portion 32 is formed on the inner periphery of the fixing cap 40. When the fixing cap 40 is rotated in the first direction while the joint pipe 20 is fixed or gripped, the first screw coupling part 32 and the second screw coupling part 42 are engaged, and the fixing cap 40 It is combined with the socket 30. Conversely, when the fixing cap 40 is rotated in the second direction while the fixing cap 40 is coupled to the socket 30, the first screw coupling part 32 and the second screw coupling part 42 are released and fixed. The cap 40 is separated from the socket 30.

The outer periphery of the fixing cap 40 has an uneven structure. Accordingly, the concave portion 40a and the convex portion 40b are repeatedly formed on the outer periphery of the fixing cap 40. As described below, the locking part of the variable type wrench according to the present invention may be inserted into the concave portion 40a, and the convex portion 40b may support the locking part of the variable type wrench inserted in the concave portion 40a.

The fixing cap 40 includes a through hole 44 that is opened circularly in the center. Therefore, the fixing cap 40 has a ring shape in which the through hole 44 is formed in the center. The diameter and shape of the through hole 44 may vary depending on the outer diameter and cross-sectional shape of the pipes 10 and 15 coupled to the joint pipe 20.

The sealing member 50 is disposed between the end of the socket 30 and the fixing cap 40. The sealing member 50 is formed in a ring shape. The sealing member 50 may be formed of an elastic material (eg, rubber) that is deformed by an external force and returns to its original shape when the external force is removed.

When the fixing cap 40 is rotated in the first direction, the sealing member 50 disposed between the socket 30 and the fixing cap 40 is formed by the inner surface of the fixing cap 40. It is pressed in the direction toward the center. Accordingly, the shape of the sealing member 50 is deformed, and the inner diameter of the sealing member 50 is reduced.

A method of coupling the pipe 15 and the joint pipe 20 having the structure as shown in FIGS. 1 and 2 will be described as follows.

First, the sealing member 50 is inserted into the receiving portion 34 formed on the inner circumferential surface of the end of the socket 30. Then, the fixing cap 40 is brought into contact with the end of the socket 30 into which the sealing member 50 is inserted. At this time, the fixing cap 40 is maintained in a state not coupled to the socket 30.

Thereafter, the pipe 15 to be coupled with the joint pipe 20 is inserted into the through hole 44 of the fixing cap 40. Accordingly, the pipe 15 can pass through the end of the socket 30 and enter the pipe support 35, and the pipe support 35 supports the end of the pipe 15.

In a state in which the pipe 15 is supported by the pipe support part 35, that is, in a state in which the pipe 15 is inserted into the joint pipe 20, the user rotates the fixing cap 40 in the first direction. As the fixing cap 40 rotates in the first direction, the sealing member 50 is pressed in a direction toward the center of the fixing cap 40 by the inner surface of the fixing cap 40. Accordingly, the sealing member 50 presses the outer surface of the pipe 15 inserted into the joint pipe 20.

When the fixing cap 40 is rotated in the first direction and tightly tightened, the coupling of the joint pipe 20 and the pipe 15 is completed. At this time, the joint pipe 20 and the pipe 15 are more tightly coupled by the sealing member 50 that presses the outer surface of the pipe 15, and the joint pipe 20 and the pipe are coupled by the sealing member 50. (15) Confidentiality is made between.

Conversely, in the case of separating the joint pipe 20 and the pipe 15, the user rotates the fixing cap 40 in the second direction. When the fixing cap 40 is released and separated from the joint pipe 20, the user can pull the pipe 15 out of the joint pipe 20.

When connecting or separating the pipes (10, 15) and the joint pipe (20) having the above structure, the user may grip the joint pipe (20) or hold the fixing cap (40) in a fixed state. It should be rotated in one or two directions. In this way, when the fixing cap 40 is rotated by hand without using a tool, a lot of power is consumed in tightening the fixing cap 40 or releasing the fixing cap 40 that is rigidly fixed. Therefore, as the number of joint pipes and pipes to be combined or separated during actual piping work increases, more manpower and time are required to tighten or loosen the fixing cap 40.

In addition, when the diameter of the pipes 10 and 15 and the joint pipe 20 is increased, or the pipes 10 and 15 and the joint pipe 20 are disposed in a position where it is difficult for the user to work, the user can fix the cap 40 It may be difficult or impossible to grip or apply force to the fixing cap 40.

However, when the variable wrench according to the present invention described below is used, the fixing cap 40 can be rotated with less force, thereby reducing manpower and time required for piping work.

In addition, when using the variable wrench according to the present invention, regardless of the diameter of the pipes (10, 15) and the fitting pipe (20) or the placement position of the pipes (10, 15) and the fitting pipe (20), the fixing cap (40) is It has the advantage of being able to rotate easily.

Hereinafter, the structure and function of the variable wrench according to an embodiment of the present invention will be described in detail.

3 is a perspective view of a variable wrench according to an embodiment of the present invention, Figure 4 is an exploded perspective view of the variable wrench according to an embodiment of the present invention. In addition, Figure 5 is a partial cross-sectional view of the variable wrench according to an embodiment of the present invention.

Referring to the drawings, a variable wrench 1 according to an embodiment of the present invention includes a base unit 100 and a variable unit 200.

The base unit 100 has a predetermined length, and an accommodation space in which the variable unit 200 is accommodated is formed inside. In the receiving space of the base unit 100, the rotation coupling portions 110 protrude in a direction facing each other on both side walls. The rotation coupling portion 110 is accommodated in the variable coupling portion 210 formed on both sides of the variable unit 200, respectively. Accordingly, the variable unit 200 is movably coupled to the rotation coupling unit 110.

The base unit 100 includes holders 120 and 130 disposed to face each other with a rotation coupling portion 110 therebetween.

The first holder 120 forms a part of the upper surface of the base unit 100. In addition, the second holder 130 forms a part of the lower surface of the base unit 100. When the variable unit 200 is movably coupled to the rotation coupling unit 110 and rotates, the end of the first holder 120 and the end of the second holder 130 are each variable coupling portion of the variable unit 200 (210) contact. At this time, the variable unit 200 is rotated only within a predetermined angle by the first holder 120 and the second holder 130. In addition, the first holder 120 and the second holder 130 form the outer shape of the base unit 100 and are held by the user when the user uses the variable wrench 1.

Specifically, the first holder 120 is formed at a position close to the curved arm 220 of the variable unit 200 with respect to the rotation coupling part 110. That is, the first holder 120 is disposed between the rotation coupling unit 110 and the guide unit 150. In addition, the second holder 130 is formed at a position far from the curved arm 220 with respect to the rotation coupling part 110. In addition, the first holder 120 and the second holder 130 are in contact with one side and the other side of the variable unit 200, respectively.

In addition, a fixing protrusion 132 is formed at one end of the second holder 130 to protrude. The fixing protrusion 132 may be engaged with the size adjustment groove 214 of the variable unit 200 to be described later. When the fixing protrusion 132 and the size adjustment groove 214 of the variable unit 200 are engaged, the variable unit 200 is fixed to the base unit 100. When an external force of a predetermined direction and size is applied while the variable unit 200 is fixed to the base unit 100, the fixing protrusion 132 and the size adjustment groove 214 are separated, and the variable unit 200 is the base unit. In a state coupled to 100, the variable unit 200 can be rotated or moved linearly.

In addition, the display unit 140 and the guide unit 150 are formed in the base unit 100.

The indicator 140 is an opening formed on one side of the base unit 100. The user can visually check the dimension information 216 displayed on the surface of the variable unit 200 through the display unit 140. The dimension information 216 displayed through the indicator 140 indicates the current distance between the locking portion 222 and the fixed cap support 152 set by the user. The dimension information 216 may be displayed at predetermined intervals along the coupling rail 212 of the variable unit 20 and may include letters, numbers, or length units.

The guide part 150 extends from one end of the first holder 120. The curvature of the guide unit 150 may be the same as or different from the curvature of the curved arm 220 of the variable unit 200. When the variable wrench according to the present invention is combined with the fixing cap 40 shown in FIG. 1, at least one surface of the convex portions 40b of the fixing cap 40 is the surface of the guide part 150 or the fixing cap support part 152 Contact with

A fixing cap support part 152 is formed at a point where one end of the guide part 150 and one end of the first holder 120 meet. The fixing cap support 152 supports at least one surface of the convex portions 40b of the fixing cap 40 when the variable wrench 1 is coupled with the fixing cap 40. As will be described later, the distance between the locking portion 222 and the fixing cap support portion 152 may be adjusted.

The variable unit 200 is coupled to the base unit 100. The variable unit 200 includes a curved arm 220 extending while being curved in a direction away from the base unit 100 and a variable coupling portion 210 extending from one end of the curved arm 220. At the other end of the curved arm 220, a hook-shaped locking portion 222 is formed.

The variable coupling part 210 includes a coupling rail 212 and a size adjustment groove 214.

The coupling rail 212 is formed in a groove shape with a predetermined length on both sides of the variable coupling portion 210. The above-described rotational coupling part 110 is accommodated in coupling rails 212 formed on both sides of the variable coupling part 210. Accordingly, the variable coupling part 210 may rotate within a predetermined angle around the rotation coupling part 110 or may move linearly within the length of the coupling rail 212.

On the lower surface of the variable coupling part 210, one or more size adjusting grooves 214 along the length direction of the variable coupling part 210, for example, a first size adjusting groove 214a, a second size adjusting groove 214b, The three size adjustment grooves 214c, the fourth size adjustment grooves 214d, and the fifth size adjustment grooves 214e are arranged at predetermined intervals, respectively. The size adjustment groove 214 may be engaged with the fixing protrusion 132 formed at one end of the second holder 130, respectively. The number and spacing of the size adjustment grooves 214 may vary according to embodiments.

Figure 6 shows the operating state of the variable wrench according to an embodiment of the present invention.

As shown in Figure 6, the coupling rail 212 is formed in a predetermined length on both sides of the variable coupling portion 210 along the longitudinal direction of the variable coupling portion 210. In addition, each of the coupling rails 212 is accommodated with a rotation coupling portion 110.

Accordingly, rotational movement (first transformation) or linear movement (second transformation) of the variable unit 200 around the rotational coupling unit 110 accommodated in the coupling rail 212 is possible. The first transformation refers to a rotational movement of the variable unit 200 centered on the rotation coupling part 110 of the base unit 100. In addition, the second transformation means a linear movement of the variable unit 200 centering on the rotation coupling part 110 of the base unit 100.

The user has a second transformation of the variable unit 200, that is, in a state in which the size adjustment groove 214 is not engaged with the fixing protrusion 132, that is, the size adjustment groove 214 to be engaged with the fixing protrusion 132 through a linear movement. ) Can be positioned to correspond to the fixing protrusion 132. In a state in which the selected size adjustment groove 214 is positioned so as to correspond to the fixing protrusion 132, the user moves the variable coupling unit 210 to the first holder 120 through the first transformation, that is, rotational movement of the variable unit 200. And by pressing in the direction in contact with the second holder 130, the selected size adjustment groove 214 can be engaged with the fixing protrusion 132.

When the size adjustment groove 214 is engaged with the fixing protrusion 132, the user presses the variable coupling part 210 in a direction not in contact with the first holder 120 and the second holder 130, thereby adjusting the size. The engagement of the groove 214 and the fixing protrusion 132 may be released. When the engagement of the size adjustment groove 214 and the fixing protrusion 132 is released through the first transformation, the second transformation of the variable coupling part 210 is possible again.

The distance between the locking portion 222 and the fixing cap support 152 of the variable wrench according to the present invention may be adjusted to match the outer diameter of the fixing cap 40 coupled to the joint pipe 20. The distance between the locking part 222 and the fixing cap support 152 is determined according to the position of the size adjustment groove 214 engaged with the fixing protrusion 132.

Hereinafter, a method of using the variable wrench according to the present invention will be described in detail.

7 to 10 show step-by-step a state in which the distance between the locking part of the variable wrench and the fixing cap support part is adjusted according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, the outer diameter of the fixing cap 40 coupled to the joint pipe 20 varies according to the outer diameter of the pipes 10 and 15 coupled to the joint pipe 20. The variable wrench according to the present invention can easily and quickly adjust the distance between the locking part 222 and the fixing cap support 152 so that it can be used for the fixing cap 40 having different outer diameters.

For example, if you want to use the variable wrench (1) on the fixing cap 40 of which the outer diameter is d ₁ as shown in FIG. 7, the distance between the locking part 222 and the fixing cap support part 152 should be adjusted to d ₁ do. Likewise, when the variable wrench 1 is to be used for the fixing cap 40 having an outer diameter of d ₂ as shown in FIG. 10, the distance between the locking portion 222 and the fixing cap support 152 should be adjusted to d ₂ .

For example, assuming that the first size adjustment groove 214a among the size adjustment grooves 214 shown in FIG. 5 corresponds to d ₁ and the fifth size adjustment groove 214e corresponds to d ₂ , the first When the size adjustment groove 214a is engaged with the fixing protrusion 132, the distance between the locking part 222 and the fixing cap support 152 becomes d ₁ . Likewise, when the fifth size adjustment groove 214e is engaged with the fixing protrusion 132, the distance between the locking portion 222 and the fixing cap support portion 152 becomes d ₂ .

Hereinafter, a process of adjusting the distance between the locking part 222 of the variable wrench according to the present invention and the fixing cap support 152 from d ₁ to d ₂ will be described.

7, in a state where the distance between the locking part 222 and the fixed cap support part 152 is d ₁ , the user moves the variable coupling part 210 of the variable unit 200 in the A1 direction as shown in FIG. 8. Pressurized to rotate (first transformation). According to an embodiment, the user may press the curved arm 200 so that the variable coupling part 210 rotates in the direction A1. Accordingly, the first size adjustment groove 214a and the fixing protrusion 132 are disengaged, and the variable unit 200 is in a state in which both rotational movement and linear movement are possible.

In the state as shown in FIG. 8, the user pushes the curved arm 220 in the direction B1 as shown in FIG. 9 or pulls the variable coupling part 210 in the direction B1 (second transformation) to adjust the position of the fifth size adjustment groove 214e. It corresponds to the position of the fixing protrusion 132.

Thereafter, as shown in FIG. 10, the user presses and rotates the variable coupling part 210 of the variable unit 200 in the direction A2 (first transformation). According to an embodiment, the user may press the curved arm 200 so that the variable coupling part 210 rotates in the direction A2. Accordingly, the fifth size adjustment groove 214e is engaged with the fixing protrusion 132, and the distance between the locking portion 222 and the fixing cap support 152 is changed to d ₂ .

When the gap between the locking part 222 and the fixing cap support 152 is adjusted in the above manner, the current gap between the locking part 222 and the fixing cap support 152 is displayed through the indicator 140. In this way, the user can easily and quickly check the distance between the locking part 222 and the fixing cap support 152 with the naked eye in the process of adjusting the gap between the locking part 222 and the fixing cap support 152.

Through the process as described above, the distance between the locking portion 222 of the variable wrench according to the present invention and the fixing cap support portion 152 is easily and quickly adjusted to a size desired by the user.

In particular, the user can adjust the distance between the locking portion 222 and the fixing cap support portion 152 using less force than when using a conventional wrench.

In addition, according to the present invention, since the distance between the locking portion 222 of the variable type wrench and the fixed cap support portion 152 can be arbitrarily adjusted, various types of pipes and fittings having different diameters can be connected using one variable type wrench. There is an advantage to be able to.

11 and 12 show a state in which a fixing cap is tightened using a variable wrench according to an embodiment of the present invention, and FIGS. 13 and 14 are a fixing cap using a variable wrench according to an embodiment of the present invention. Shows the unlocked state.

11 to 14, the variable wrench according to an embodiment of the present invention rotates the fixing cap 40 when connecting or separating the pipes 10 and 15 with the joint pipe 20. Used.

In the case of tightening the fixing cap 40 using a variable wrench according to an embodiment of the present invention, the user may follow the method as described above, and the locking portion 222 of the variable wrench according to an embodiment of the present invention The gap between the fixing cap support 152 is adjusted to correspond to the outer diameter of the fixing cap 40.

In the case of tightening the fixing cap 40 in a state where the distance between the locking part 222 and the guide part 150 is adjusted, the user is caught in the variable wrench according to the present invention as shown in FIGS. 11 and 12 The part 222 is inserted into the recess 40a of the fixing cap 40. Accordingly, the locking portion 222 is supported by the convex portion 40b while the locking portion 222 contacts the side surface of the convex portion 40b.

In a state in which the locking part 222 is supported by the convex part 40b, the user contacts the fixing cap support 152 in the surface direction of the fixing cap 40. Accordingly, the fixing cap support 152 or the guide 150 is supported by the surface of the fixing cap 40, that is, the surface of the convex portion formed on the outer surface of the fixing cap 40.

In this way, the locking portion 222 is supported by the convex portion 40b, and the fixed cap support portion 152 or the guide portion 150 is supported by the surface of the fixing cap 40, so that the force applied by the user affects the fixing cap 40. It is converted into a rotating force.

In addition, the locking portion 222 is supported by the convex portion 40b and the fixing cap support portion 152 or the guide portion 150 is supported by the surface of the fixing cap 40, so that the user can use a variable wrench While rotating 40), the variable wrench and the fixing cap 40 are not separated.

Thereafter, the user fixes or grips the joint pipe 20 and presses the base unit 100 while holding the base unit 100 to rotate it in the C1 direction. Accordingly, the fixing cap 40 is rotated in the C1 direction. The user may rotate the fixing cap 40 in the C1 direction until the fixing cap 40 is completely engaged with the socket 32.

On the other hand, when the fixing cap 40 wants to release the fixing cap 40 in a state in which the fixing cap 40 is coupled with the socket 32, the user fixes the locking part 222 of the variable wrench as shown in FIGS. 13 and 14 It is inserted into the concave portion 40a of the cap 40. Accordingly, the locking portion 222 is supported by the convex portion 40b, and the fixing cap support portion 152 or the guide portion 150 is supported by the surface of the fixing cap 40.

Thereafter, the user fixes or grips the joint pipe 20 and presses the base unit 100 while holding the base unit 100 to rotate it in the C2 direction. Accordingly, as the fixing cap 40 is rotated in the C2 direction, the fixing cap 40 is separated from the socket 32.

On the other hand, in the embodiment shown in FIGS. 12 and 14, the outer surface of the fixing cap 40 is not only the fixing cap support 152 of the variable wrench 1 according to the embodiment of the present invention, but also the curved arm 220 and It is also supported by the surface of the guide part 150. However, as shown in FIG. 10, when the distance between the locking part 222 and the fixing cap support 152 is reduced according to the outer diameter of the fixing cap 40, the outer surface of the fixing cap 40 is the guide part 150 It may be supported by a portion of the surface and the fixing cap support 152, or may be supported only by the fixing cap support 152.

As described above, the variable wrench according to the present invention has the advantage of being able to quickly and easily adjust the gap between the fixing cap and the locking portion coupled to the fixing cap without consuming a lot of force.

In addition, the use of the variable wrench according to the present invention has the advantage of being able to tighten or loosen the fixing cap by consuming less force than the conventional one.

In addition, when the variable wrench according to the present invention is used, there is an advantage of preventing the wrench from being separated from the fixing cap when tightening or loosening the fixing cap.

In addition, according to the present invention, there is an advantage of being able to connect various types of pipes and joint pipes having different diameters using one variable wrench.

As described above with reference to the drawings illustrated for the present invention, the present invention is not limited by the embodiments and drawings disclosed in the present specification, and various by a person skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformation can be made. In addition, even if not explicitly described and described the effects of the configuration of the present invention while describing the embodiments of the present invention, it is natural that the predictable effects of the configuration should also be recognized.

10: pipe
20: joint pipe
30: socket 32: first screw coupling portion
34: receiving part
40: fixing cap 42: second screw coupling portion
44: through hole
50: sealing member
100: base unit 110: rotation coupling portion
120: first holder 130: second holder
132: fixing protrusion 140: indicator
150: guide part
200: variable unit 210: variable coupling unit
212: coupling rail 214: size adjustment groove
216: dimensional information 220: curved arm
222: locking part

Claims (9)

A base unit having a predetermined length and having an accommodation space formed therein; And
Including a variable unit coupled to the base unit,
The variable unit is
A curved arm extending while being curved in a direction away from the base unit and having a locking portion formed at the other end; And
Including a variable coupling portion extending from one end of the curved arm,
The base unit
It includes a fixing cap support portion formed at a position facing the locking portion,
The distance between the locking part and the fixed cap support part is adjusted by rotational movement or linear movement of the variable unit.
Variable wrench.
The method of claim 1,
Rotating coupling portions to which the variable units are movably coupled are formed on both side walls of the receiving space of the base unit,
Both sides of the variable coupling portion have a predetermined length and coupling rails for receiving the rotation coupling portion are formed.
Variable wrench.
The method of claim 1,
The base unit
A first holder disposed between the rotational coupling part and the curved arm and in contact with one side of the variable unit; And
And a second holder disposed on the opposite side of the curved arm around the rotational coupling portion and in contact with the other side of the variable unit.
Variable wrench.
The method of claim 1,
The variable unit is
Arranged at predetermined intervals along the longitudinal direction of the variable coupling portion and including one or more size adjustment grooves corresponding to the interval between the locking portion and the fixed cap support portion
Variable wrench.
The method of claim 4,
The distance between the locking part and the fixed cap support part is determined according to the position of the size adjustment groove
Variable wrench.
The method of claim 1,
The end of the second holder of the base unit is formed with a fixing protrusion that engages with the size adjustment groove formed in the variable coupling portion.
Variable wrench.
The method of claim 1,
The base unit
It is formed on one side of the base unit and includes an indicator for indicating a distance between the locking portion and the fixing cap support portion
Variable wrench.
The method of claim 3,
The base unit
It includes a guide portion extending from one end of the first holder and having a predetermined curvature,
The fixing cap support part is formed at a point where one end of the first holder and one end of the guide part meet.
Variable wrench.
The method of claim 1,
The locking portion is supported by a convex portion formed on the outer surface of the fixing cap coupled to the joint pipe,
The fixing cap support part is supported by the outer surface of the fixing cap
Variable wrench.

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