KR20230068614A - Muscle strength training equipment - Google Patents

Abstract

A muscle strength training device that utilizes multifaceted resistance through the movement of a weight is disclosed. The muscle strength training device, according to an embodiment of the present invention, comprises: a pipe-shaped center bar; a pair of pipe-shaped handles having a first coupling part coupled to both ends of the center bar; a pair of pipe-shaped extension bars having a second coupling part coupled to the handle; a pair of weight parts having a chamber to accommodate a weight and coupled to the extension bar; and a pair of holders coupled to the extension bar and the weight part to support the weight part. The weight can freely move between both chambers, and the weight part can allow the weight to enter and exit the chamber. Accordingly, the weight part can cause a multifaceted resistance force as the weight moves freely between both chambers, and the weight of the weight accommodated in the chamber can be freely adjusted.

Description

{Muscle strength training equipment}

The present invention relates to a strength exercise machine, and more particularly, to a strength exercise machine using multifaceted resistance through movement of a weight body.

In general, strength training is an exercise that gives a certain overload (weight) to muscles. Gradually increasing the load (weight) strengthens muscle strength, which is the ability of muscles to exert force. It is included in anaerobic exercise because the consumption of oxygen is not required for the muscles to produce power.

Exercise to improve muscle strength is generally referred to as weight training. Weight training refers to exercise that loads the body using dumbbells, barbells, or weight machines.

Dumbbells for conventional weight training are not easy to fine-tune because they are in the form of inserting various types of weights.

In addition, since conventional dumbbells for weight training use weights that maintain a fixed shape, only resistance in the direction of gravity acts, and users feel bored in monotonous exercise.

Korean Utility Model Publication No. 20-2019-0000292 (published on February 1, 2019)

One problem to be solved by the present invention is to provide a strength training device that can induce interest by generating multifaceted resistance.

Another problem to be solved by the present invention is to provide a strength training device capable of easily adjusting the weight of a weight unit.

Another problem to be solved by the present invention is to provide a strength training device capable of stably supporting a weight unit.

Another problem to be solved by the present invention is to provide a strength training device that can be easily assembled or disassembled.

In order to achieve the above object, the strength training apparatus according to an embodiment of the present invention, the center bar in the form of a pipe; A pair of pipe-shaped handles formed with first coupling parts coupled to both ends of the center bar; A pair of pipe-shaped extension bars having a second coupling part coupled to the handle; A pair of weight parts having a chamber accommodating the weight and coupled to the extension bar; and a pair of holders coupled to the extension bar and the weight unit to support the weight unit, the weight unit being able to freely move between both chambers, and the weight unit allowing the weight unit to enter and exit the chamber.

In addition, in order to achieve the above object, in the strength training apparatus according to an embodiment of the present invention, the weight portion may be formed with a connection portion to which an extension bar is inserted and coupled, and an entrance connected to the chamber may be formed inside the connection portion.

In addition, in order to achieve the above object, in the strength training apparatus according to an embodiment of the present invention, the holder is a body in which a through hole is formed into which the connection portion of the weight unit is inserted and coupled; and a plurality of branches extending from the body and surrounding the weight unit.

In addition, in order to achieve the above object, in the strength training apparatus according to an embodiment of the present invention, a plurality of fixing grooves are formed in the connection portion of the weight unit, a plurality of projections are formed on the holder body, and the projections are coupled to the fixing grooves. It can be.

In addition, in order to achieve the above object, in the strength training apparatus according to an embodiment of the present invention, the weight unit, the first hemisphere in which the connection portion is formed; And it may include a second hemisphere coupled to the first hemisphere.

In addition, in order to achieve the above object, in the strength training apparatus according to an embodiment of the present invention, the weight unit further includes a fixing ring coupled to the first hemisphere or the second hemisphere, and the fixing ring is the first hemisphere and the second hemisphere. The binding site of can be fixed.

In addition, in order to achieve the above object, in the strength training apparatus according to the embodiment of the present invention, the center bar is formed with an annular first protrusion in contact with the first coupling portion of the handle, and the handle is the second coupling portion of the extension bar. An annular second protrusion is formed in contact with the extension bar, an annular third protrusion is formed to be inserted into the through hole of the holder, and the third protrusion can come into contact with the protrusion of the holder.

In addition, in order to achieve the above object, in the strength training apparatus according to an embodiment of the present invention, the third protrusion is formed with a first annular groove in which an O-ring is coupled to a portion facing the weight portion, and a portion facing the weight portion. A second annular groove into which the protrusion is inserted may be formed.

In addition, in order to achieve the above object, in the strength training apparatus according to an embodiment of the present invention, the weight body may be a fluid or a plurality of marbles.

In addition, in order to achieve the above object, in the strength training apparatus according to the embodiment of the present invention, the weight body may be a fluid and a plurality of marbles.

According to the strength training apparatus according to an embodiment of the present invention, the pipe-shaped center bar; A pair of pipe-shaped handles formed with first coupling parts coupled to both ends of the center bar; A pair of pipe-shaped extension bars having a second coupling part coupled to the handle; A pair of weight parts having a chamber accommodating the weight and coupled to the extension bar; and a pair of holders coupled to the extension bar and the weight unit to support the weight unit, the weight body can move freely between both chambers, and the weight unit can move the weight body into and out of the chamber, so that the weight unit moves between both chambers. A freely moving weight can generate multifaceted resistance, and the weight of the weight accommodated in the chamber can be freely adjusted.

In addition, according to the strength training apparatus according to an embodiment of the present invention, since the weight part has a connection part to which an extension bar is inserted and coupled, and an entrance connected to a chamber can be formed in the connection part, separating the weight part can remove the weight. It is easy to get in and out of the chamber.

Further, according to the strength training apparatus according to an embodiment of the present invention, the holder includes a body in which a through-hole is formed into which a connection portion of a weight unit is inserted and coupled; And since it may include a plurality of branches extending from the body and surrounding the weight part, the weight part may be stably supported by surrounding the branches of the holder in various directions.

In addition, according to the strength training apparatus according to an embodiment of the present invention, since the weight unit has a plurality of fixing grooves formed on the connection portion, the holder has a plurality of projections formed on the body, and the projections can be coupled to the fixing grooves, the holder It can be stably coupled to the weight part and the protrusion can prevent the holder from rotating.

In addition, according to the strength training apparatus according to an embodiment of the present invention, the weight unit includes a first hemisphere in which a connection unit is formed; And since it may include a second hemisphere coupled to the first hemisphere, the hollow spherical weight part may be separated into two hemispheres to open an internal chamber and allow the weight body to enter and exit the chamber directly.

In addition, according to the strength training apparatus according to an embodiment of the present invention, the weight unit further includes a fixing ring coupled to the first hemisphere or the second hemisphere, and the fixing ring fixes the joint between the first hemisphere and the second hemisphere. Therefore, the fixing ring can prevent the first hemisphere and the second hemisphere in a coupled state from being separated.

In addition, according to the strength training device according to an embodiment of the present invention, the center bar is formed with an annular first protrusion in contact with the first coupling part of the handle, and the handle is formed with a second annular protrusion in contact with the second coupling part of the extension bar. Since the protrusion is formed, the extension bar is formed with a third annular protrusion inserted into the through hole of the holder, and the third protrusion can come into contact with the protrusion of the holder, the first protrusion has a length at which the center bar is inserted into the first coupling part. , the second protrusion may limit the length by which the handle is inserted into the second coupling portion, and the third protrusion may limit the length by which the handle is inserted into the connecting portion.

In addition, according to the strength training apparatus according to an embodiment of the present invention, the third protrusion has a first annular groove in which an O-ring is coupled to the portion facing the weight portion, and a second protrusion is inserted into the portion facing the weight portion. Since the annular groove can be formed, the O-ring can completely block the chamber from the outside and prevent the weight from leaking between the connection part and the handle, and the second annular groove can provide a gap through which the O-ring can be compressed.

In addition, according to the strength training apparatus according to the embodiment of the present invention, since the weight body can be a fluid or a plurality of marbles, the weight body can freely move between both chambers while generating various resistances, and the user can In order to exercise while enduring the energy generated by exercise, it is possible to increase muscle strength and improve balance.

In addition, according to the strength training apparatus according to the embodiment of the present invention, since the weight body can be a fluid and a plurality of marbles, the weight body can freely move between both chambers while generating greater multilateral resistance, and the user can In order to exercise while enduring the energy generated by the body, the strength of the muscles can be increased and balance can be further improved.

1 shows a perspective view of a strength training device according to an embodiment of the present invention.
Figure 2 shows a disassembled perspective view of a portion of the strength training apparatus of Figure 1.
3 is a front cross-sectional view of the strength training apparatus of FIG. 1;
Figure 4 shows a front cross-sectional view in which a part of the strength training apparatus of Figure 3 is disassembled.
5 shows a state of use when a fluid is used as a weight in a strength training apparatus according to an embodiment of the present invention.
6 shows a state of use when a plurality of beads are used as weights in a strength training apparatus according to an embodiment of the present invention.

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

However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

The X, Y, and Z axes shown in the drawing are arbitrarily determined for convenience of description, not for limitation of rights. , and the Z-axis is defined as pointing up and down.

Each direction described below is based on this, except for cases specifically limited otherwise.

Top (top), bottom (bottom), left and right (side or side), front (front, front), back (back, back), etc., which refer to directions in the description and claims of the invention, etc., are not intended to limit the use of rights. For convenience of description, the relative position between the drawings and configurations is set as a standard, and each direction described below is based on this, except when specifically limited otherwise.

1 to 4, the strength training apparatus 1 according to the present invention is in the form of a substantially long stick, and includes a center bar 100 in the form of a pipe; A pair of pipe-shaped handles 200 having first coupling parts 230 coupled to both ends of the center bar 100; a pair of pipe-shaped extension bars 300 in which a second coupling portion 330 coupled to the handle 200 is formed; a pair of weight parts 400 having a chamber 460 accommodating the weight and coupled to the extension bar 300; and a pair of holders 500 coupled to the extension bar 300 and the weight portion 400 to support the weight portion 400 .

Since the weight can move freely between both chambers 460, the weight can generate multifaceted resistance.

Since the weight unit 400 allows weights to enter and exit the chamber 460 , the weight accommodated in the chamber 460 can freely adjust the weight.

Referring to Figures 1 to 4, the center bar 100 is located in the center and has a pipe-shaped configuration in which handles 200 are coupled to both sides.

The center bar 100 may be formed of a pipe having a circular cross section.

The center bar 100 may have a first passage 110 through which a weight can move.

The center bar 100 may have threads formed at both ends.

The center bar 100 may have an annular first protrusion 120 in contact with the first coupling portion 230 of the handle 200 .

The first protrusion 120 has a ring shape protruding from the side of the center bar 100 .

Since the first protrusion 120 can limit the length of the center bar 100 inserted into the first coupling portion 230, excessive insertion of the center bar 100 into the first coupling portion 230 is prevented. can do.

A first annular groove 111 to which the O-ring 130 is coupled may be formed at a portion of the first protrusion 120 facing the first coupling portion 230 .

The O-ring 130 coupled to the first annular groove 111 may seal between the handle 200 and the center bar 100 .

A second annular groove 112 into which an edge of the first coupling portion 230 is inserted may be formed at a portion of the first protrusion 120 facing the first coupling portion 230 .

When the center bar 100 is coupled to the first coupling portion 230, the second annular groove 112 may come into contact with the rim of the first coupling portion 230, so that the center bar 100 is the first coupling portion. Excessive insertion into (230) can be prevented.

When the center bar 100 is coupled to the first coupling part 230, the second annular groove 112 may provide a gap through which the O-ring 130 can be compressed.

The center bar 100 may include a valve (not shown) capable of opening and closing the first passage 110 .

The valve capable of opening and closing the first passage 110 may block the movement of a weight between the two chambers 460 .

1 to 4, the handle 200 has a pipe shape coupled between the center bar 100 and the extension bar 300.

The handle 200 is coupled to both ends of the center bar 100 and may be formed of a pipe having a circular cross section.

The handle 200 may have a first coupling part 230 formed in a direction facing the center bar 100 .

The first coupling part 230 has a shape in which the side of the pipe is extended, and a screw thread engaged with a screw thread of the center portion may be formed therein.

The handle 200 may have a second passage 210 through which the weight can move.

The second passage 210 of the handle 200 is connected to the first passage 110 of the center bar 100.

The handle 200 may have a screw thread formed in a direction opposite to the first coupling part 230 .

The handle 200 may have an annular second protrusion 220 contacting the second coupling portion 330 of the extension bar 300 .

The second protrusion 220 has a ring shape protruding from the side of the handle 200 .

Since the second protrusion 220 can limit the length of the handle 200 inserted into the second coupling portion 330, excessive insertion of the handle 200 into the second coupling portion 330 can be prevented. there is.

A first annular groove 211 to which the O-ring 240 is coupled may be formed at a portion of the second protrusion 220 facing the second coupling portion 330 .

The O-ring 240 coupled to the first annular groove 211 may seal between the extension bar 300 and the handle 200 .

A second annular groove 212 into which an edge of the second coupling portion 330 is inserted may be formed at a portion of the second protrusion 220 facing the second coupling portion 330 .

When the handle 200 is coupled to the second coupling portion 330, the second annular groove 212 may come into contact with the rim of the second coupling portion 330, so that the handle 200 is coupled to the second coupling portion 330. ) can be prevented from being excessively inserted into.

When the handle 200 is coupled to the second coupling part 330, the second annular groove 212 can provide a gap through which the O-ring 240 can be compressed.

In the handle 200 , a non-slip grip 250 may be formed between the first coupling part 230 and the second protrusion part 220 .

The handle 200 may include a valve (not shown) capable of opening and closing the second passage 210 .

The valve capable of opening and closing the second passage 210 may block the movement of a weight between the two chambers 460 .

Referring to FIGS. 1 to 4 , the extension bar 300 has a pipe shape coupled between the handle 200 and the weight unit 400 .

The extension bar 300 may be formed of a pipe having a circular cross section.

The extension bar 300 may have a second coupling portion 330 formed in a direction facing the handle 200 .

The second coupling part 330 has a shape in which the side of the pipe is extended, and a screw thread engaged with the screw thread of the handle 200 may be formed therein.

The extension bar 300 may have a third passage 310 through which a weight can move.

The third passage 310 of the extension bar 300 is connected to the second passage 210 of the handle 200 .

The extension bar 300 may have a screw thread formed in a direction opposite to the second coupling part 330 .

The extension bar 300 may have an annular third protrusion 320 contacting the protrusion 512 of the holder 500 .

The third protrusion 320 has a ring shape protruding from the side of the extension bar 300 .

Since the third protrusion 320 may limit the length at which the extension bar 300 is inserted into the connecting portion 410 , excessive insertion of the extension bar 300 into the connecting portion 410 may be prevented.

Since the third protrusion 320 comes into contact with the protrusion 512 of the holder 500, it is possible to prevent the holder 500 from being separated from the weight part 400.

A first annular groove 311 to which an O-ring 340 is coupled may be formed in a portion of the third protrusion 320 facing the weight portion 400 .

The O-ring 340 coupled to the first annular groove 311 may seal between the connecting portion 410 and the extension bar 300 .

A second annular groove 312 into which the protrusion 512 of the holder 500 can be inserted may be formed at a portion of the third protrusion 320 facing the weight portion 400 .

When the extension bar 300 is coupled to the connection part 410, the second annular groove 312 may come into contact with the protrusion 512 of the holder 500, so that the extension bar 300 is excessively attached to the connection part 410. insertion can be prevented.

When the extension bar 300 is coupled to the connecting portion 410, the second annular groove 312 can provide a gap through which the O-ring 340 can be compressed.

The extension bar 300 may include a valve (not shown) capable of opening and closing the third passage 310 .

The valve capable of opening and closing the third passage 310 may block the movement of the weight between the two chambers 460 .

Referring to FIGS. 1 to 4 , the weight unit 400 is configured to provide weight for strength training.

The weight part 400 may be coupled to both ends of the extension bar 300 .

The weight part 400 may be formed in the shape of a hollow sphere.

The weight unit 400 may have a chamber 460 capable of accommodating a weight therein.

The chamber 460 of the weight part 400 is connected to the third passage 310 of the extension bar 300 .

The weight unit 400 may insert or remove weights from the chamber 460 .

The weight unit 400 may adjust the weight of the weight by moving the weight into and out of the chamber 460 .

The weight portion 400 may be formed with a connection portion 410 into which the extension bar 300 is inserted and coupled.

The connecting portion 410 may be formed in a pipe shape having a circular cross section so that the extension bar 300 having a circular cross section may be inserted.

The connecting portion 410 may have a thread formed on an inner side surface of the pipe shape that engages with a thread formed on the extension bar 300 .

In the connection part 410, an entrance 411 connected to the chamber 460 may be formed on an inner bottom of a pipe shape.

The third passage 310 of the extension bar 300 coupled to the connection part 410 may be connected to the chamber 460 through the entrance 411 formed in the connection part 410 .

The connection part 410 may have a plurality of fixing grooves 412 formed on the outer side of the pipe shape.

The connection part 410 may be coupled with a protrusion 512 formed on the body 510 of the holder 500 to the fixing groove 412 .

The protrusion 512 of the holder 500 may be fixed between the fixing groove 412 of the connection part 410 and the third protrusion 310 of the extension bar 300 .

The weight portion 400 has a hollow sphere shape and may include a first hemisphere 420 in which the connection portion 410 is formed and a second hemisphere 430 coupled to the first hemisphere 420 .

The first fastening part 421 may be formed at a portion of the first hemisphere 420 in contact with the second hemisphere 430 .

The second fastening portion 431 may be formed at a portion of the second hemisphere 430 in contact with the first hemisphere 420 .

The first fastening part 421 and the second fastening part 431 may form a coupling part.

The first hemisphere 420 and the second hemisphere 430 may be coupled by forming threads interlocking with each other at the coupling portion.

In the first hemisphere 420 , a thread may be formed in the first fastening portion 421 , and in the second hemisphere 430 , a thread engaged with the thread may be formed in the second fastening portion 431 .

When the first hemisphere 420 and the second hemisphere 430 are coupled, a chamber 460 may be formed therein.

The weight unit 400 separates the first hemisphere 420 and the second hemisphere 430 to open the internal chamber 460, and the weight can be directly inserted into or removed from the chamber 460.

The first hemisphere 420 is a part coupled to the handle 200, and the second hemisphere 430 is the outermost part.

The weight unit 400 may further include a fixing ring 440 coupled to the first hemisphere 420 or the second hemisphere 430 .

The weight unit 400 may further include an O-ring 450 coupled to the first hemisphere 420 or the second hemisphere 430 .

When the second hemisphere 430 is exposed at the junction between the first hemisphere 420 and the second hemisphere 430, a second fastening groove 432 may be formed in the second hemisphere 430, The fixing ring 440 may be coupled to the second fastening groove 432 .

The fixing ring 440 coupled to the second fastening groove 432 may press the coupling portion of the first hemisphere 420 and the second hemisphere 430 toward the center of the weight unit 400 .

The fixing ring 440 can prevent the first hemisphere 420 and the second hemisphere 430 from being separated by fixing the coupling portion of the first hemisphere 420 and the second hemisphere 430. .

When the second hemisphere 430 is exposed at the junction between the first hemisphere 420 and the second hemisphere 430, a first fastening groove 422 may be formed in the first hemisphere 420, An O-ring 450 may be coupled to the first fastening groove 422 .

The first hemisphere 420 may have a first fastening groove 422 formed on a vertical surface facing the end of the second fastening part 431 .

The longitudinal surface of the end of the second fastening part 431 may press the O-ring 450 coupled to the first fastening groove 422 .

The O-ring 450 coupled to the first fastening groove 422 may seal between the first hemisphere 420 and the second hemisphere 430 .

The fixing ring 440 may maintain a state in which the end of the second fastening part 431 presses the O-ring 450 coupled to the first fastening groove 422 .

A partition wall (not shown) may be formed in the second hemisphere 430 to close a portion that opens in a direction toward the first hemisphere 420 .

When the partition wall is formed in the second hemisphere 430, the first hemisphere 420 and the second hemisphere 430 may have independent chambers 460 separated by the partition wall.

The user can select an independent chamber 460 separated by a partition wall to insert or remove a weight.

Even if any one of the independent chambers 460 separated by the partition wall is damaged, the remaining chambers 460 can perform their functions.

Referring to FIGS. 1 to 4 , the holder 500 is configured to support the weight unit 400 by being coupled to the extension bar 300 and the weight unit 400 .

When the user lifts the strength exercise device 1, the holder 500 may prevent the weight unit 400 from being lowered relative to the extension bar 300.

The holder 500 includes a body 510 in which a through hole 511 into which the connecting portion 410 of the weight portion 400 is inserted and coupled is formed; and a plurality of branches 520 extending from the body 510 and surrounding the weight part 400 .

The body 510 may be formed in a pipe shape having a circular cross section into which the connecting portion 410 of the weight portion 400 is inserted.

A through hole 511 coupled to the connection portion 410 of the weight portion 400 may be formed inside the pipe-shaped body 510 .

The body 510 may be formed with a plurality of protrusions 512 coupled to the fixing groove 412 of the connection part 410 .

When the protrusion 512 of the body 510 is coupled to the fixing groove 412 of the connection part 410, the holder 500 can be stably coupled to the weight part 400.

When the protrusion 512 of the body 510 is coupled to the fixing groove 412 of the connection part 410, rotation of the holder 500 relative to the weight part 400 can be prevented.

The protrusion 512 of the body 510 may be coupled to the fixing groove 412 of the connection part 410 by fitting, magnetic coupling, or adhesive.

A plurality of grip grooves 513 may be formed on an outer side of the body 510 .

The grip groove 513 can prevent a hand from slipping when rotating the holder 500 .

The branch 520 extends from the body 510 and is coupled to the weight unit 400 while surrounding it.

The branches 520 may extend radially from the body 510 to support the weight portion 400 .

If the branch 520 is formed to protrude beyond the weight part 400, it is possible to prevent the spherical weight part 400 from rolling.

5 and 6, the weight body is accommodated in the chamber 460 of the weight part 400 to generate multifaceted resistance and stimulate muscles.

The weight body may be a fluid 600 such as water capable of providing weight for strength training.

The fluid 600 such as water may cause tension and waves due to friction caused by colliding with the wall of the chamber 460 .

The weight body may be a plurality of marbles 700 capable of providing weight for strength training.

The plurality of marbles 700 may exhibit motion similar to that of water.

The plurality of marbles 700 may rotate due to friction caused by colliding with the wall of the chamber 460 .

The weight enters and exits the chamber 460 through the entrance 411 formed at the connection part 410 of the weight unit 400, or separates the first hemisphere 420 and the second hemisphere 430 to enter the chamber 460. can be accessed with

Since the weight can move freely between both chambers 460, when the strength training device 1 is used, the weight moves between both chambers 460 or hits the wall of the chamber 460 in an unpredictable direction. it gets moving

When using the strength training device 1, since the weight moves in an unpredictable direction, unpredictable multifaceted resistance is generated.

When using the strength training apparatus 1, the user must exercise the muscles with greater force because the change in resistance of the weight body cannot be predicted.

When using the strength training apparatus 1, the user can concentrate and perform muscle exercise because the change in resistance of the weight body cannot be predicted.

The weight body may be the fluid 600 or the plurality of marbles 700, or the fluid 600 and the plurality of marbles 700.

That is, the weight body may use either one of the fluid 600 and the plurality of marbles 700 or all together.

If any one of the fluid 600 and the plurality of marbles 700 is used as the weight, the weight can freely move between both chambers 460 and generate various resistances, and the user can use the energy generated by the weight In order to exercise while enduring, you can increase muscle strength and improve balance.

When both the fluid 600 and the plurality of beads 700 are used as the weight body, since water exists between the plurality of beads 700 having a higher specific gravity than water, the weight provided by the weight body can be further increased.

When both the fluid 600 and the plurality of marbles 700 are used as the weight, the plurality of marbles 700 move while being submerged in the fluid 600, making it more difficult to predict the movement of the weight.

When both the fluid 600 and the plurality of marbles 700 are used together as the weight, the weight can move freely between the chambers 460 on both sides to generate greater multilateral resistance, and the user can use the energy generated by the weight In order to exercise while enduring, you can increase muscle strength and improve balance.

In the foregoing, although specific embodiments of the present invention have been described and shown, the present invention is not limited to the described embodiments, and it is common knowledge in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have

Therefore, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and modified embodiments should be said to belong to the scope of the present invention.

1: strength exercise equipment 100: center bar
110: first passage 120: first protrusion
111: first annular groove 112: second annular groove
130: O-ring 200: handle
210: second passage 220: second protrusion
211: first annular groove 212: second annular groove
230: first coupling part 240: O-ring
250: anti-slip grip 300: extension bar
310: third passage 311: first annular groove
312: second annular groove 320: third protrusion
330: second coupling part 340: O-ring
400: weight part 410: connection part
411: entrance 412: fixed groove
420: first hemisphere 421: first fastening part
422: first fastening groove 430: second hemisphere
431: second fastening part 432: second fastening groove
440: fixed ring 450: O-ring
460: chamber 500: holder
510: body 511: through hole
512: protrusion 513: grip groove
520 branch 600 fluid
700: beads

Claims (10)

center bar in the form of a pipe;
a pair of pipe-shaped handles formed with first coupling parts coupled to both ends of the center bar;
a pair of pipe-shaped extension bars having a second coupling part coupled to the handle;
a pair of weight parts having a chamber accommodating a weight and coupled to the extension bar; and
Includes a pair of holders coupled to the extension bar and the weight portion to support the weight portion;
The weight can move freely between the two chambers,
The strength training apparatus according to claim 1 , wherein the weight unit can move the weight body into and out of the chamber. According to claim 1,
The weight portion is formed with a connection portion into which the extension bar is inserted and coupled,
Strength exercise equipment, characterized in that the connecting portion is formed with an entrance connected to the chamber therein. According to claim 2,
the holder,
a body in which a through hole is formed into which the connecting portion of the weight unit is inserted and coupled; and
Strength training apparatus comprising a plurality of branches extending from the body and surrounding the weight part. According to claim 3,
The weight portion is formed with a plurality of fixing grooves in the connecting portion,
The holder has a plurality of protrusions formed on the body,
The protrusion is a strength training device, characterized in that coupled to the fixing groove. According to claim 4,
The weight part,
a first hemisphere in which the connecting portion is formed; and
Strength training apparatus comprising a second hemisphere coupled to the first hemisphere. According to claim 5,
The weight unit further includes a fixing ring coupled to the first hemisphere or the second hemisphere,
The fixing ring is a strength training device, characterized in that for fixing the coupling portion of the first hemisphere and the second hemisphere. According to claim 4,
The center bar is formed with an annular first protrusion contacting the first coupling part of the handle,
The handle is formed with an annular second protrusion contacting the second coupling part of the extension bar,
The extension bar is formed with an annular third protrusion inserted into the through hole of the holder,
The third protrusion is a strength training device, characterized in that in contact with the protrusion of the holder. According to claim 7,
The third protrusion,
A first annular groove to which an O-ring is coupled is formed in a portion facing the weight portion,
Strength exercise equipment, characterized in that a second annular groove into which the protrusion is inserted is formed in a portion facing the weight portion. According to any one of claims 1 to 8,
The strength training apparatus, characterized in that the weight body is a fluid or a plurality of beads. According to any one of claims 1 to 8,
The weight body is a strength training apparatus, characterized in that the fluid and a plurality of beads.

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