CN108465196A - Exempt from reassembling type portable type barbell - Google Patents

Abstract

The invention discloses a convenient disassembly-free barbell, comprising: a barbell bar and two barbell pieces, the barbell bar includes: a connecting straight section and carrying sections located on both sides of the connecting straight section, each of the The carrying segment is used to install one of the barbell plates and both include: a straight bar segment and a sub-chain segment, wherein the sub-chain segment is located between the connecting straight segment and the straight bar segment and is connected to the connecting straight segment and the straight bar segment respectively. The bar section is hinged, and the barbell bar of the present invention perfectly combines the straight bar and the curved bar, which reduces the use of raw materials, makes bar changing as one likes, bids farewell to troubles, and makes carrying more convenient. The built-in barbell plate base of the present invention has a simple structure. After installing the built-in barbell plate base of the present invention, when it is necessary to increase the weight of the barbell, it is not necessary to repeatedly disassemble and install, and only need to gently slide the slide in the chute. block can be realized.

Description

Non-detachable and convenient barbell

technical field

The invention belongs to the technical field of barbells, and in particular relates to a disassembly-free and convenient barbell.

Background technique

Modern people pay more and more attention to fitness and have higher and higher requirements for fitness equipment. Barbells and barbell-based main exercises are far superior to other training equipment. Barbell exercises are governed by each individual's specific movement patterns, fine-tuned by the length of the trainer's limbs, the location of muscle connections, strength levels, flexibility, and the effectiveness of the neuromuscular connection. The muscles involved in a barbell movement are naturally in balance because all the muscles involved contribute their anatomically specific portion of the workload: the muscles move the joints between the bones, and the bones transmit the force to the barbell. This way of movement is in line with the laws of the human body movement system.

At present, there are mainly straight bars and curved bars on the barbell market. The current method of exchanging the straight bars and the curved bars is to disassemble the barbell plates first and then install them on the curved bars, which is time-consuming and laborious.

In addition, the installation method of the old-fashioned barbell plate is: after loosening the screw, install the barbell plate on the lever, and then tighten the screw. This installation method is not only difficult to operate, but also takes too long.

Contents of the invention

Aiming at the deficiencies of the prior art, the object of the present invention is to provide a convenient barbell without disassembly and assembly, which can solve the problems of troublesome bar changing and cumbersome carrying, and has the advantages of quick bar changing and convenient transfer. Advantages, and the barbell plate greatly reduces the changeover time and enhances the convenience.

The purpose of the present invention is achieved through the following technical solutions.

A convenient disassembly-free barbell, comprising: a barbell bar and two barbell plates, the barbell bar including: a connecting straight section and loading sections located on both sides of the connecting straight section, each of the loading sections is used for One of the barbell plates is installed and each includes: a straight bar segment and a sub-chain segment, wherein the sub-chain segment is located between the connecting straight segment and the straight bar segment and is respectively hinged with the connecting straight segment and the straight bar segment, in,

Each of the straight rod segments forms a cavity on the end face hinged with the sub-chain segment, and an iron core straight rod is placed in the cavity, and a first sleeve is connected to the external thread of each of the straight rod segments , the outside of the first sleeve is connected to one end of a first steel wire, the first steel wire can be wound outside the first sleeve and the other end of the first steel wire passes through the straight rod on which the first sleeve is installed section and connected with the straight iron core rod for pulling the straight iron core rod into the cavity; a first press is installed between the straight iron core rod and the bottom end inside the cavity reed;

Each of the sub-chain segments is composed of a plurality of sub-chain matrix hinges, and each of the two sub-chain segments is provided with a tensioning device or shares a tensioning device, and each of the tensioning devices is installed on the connecting The straight segment or straight rod segment is connected with one end of a second steel wire, the other end of the second steel wire is a connecting end, and the connecting end passes through the sub-chain segment and connects with the connecting straight segment or straight rod The internal connection of the segments, the tensioning device is tightened, and the sub-chain bases located in the corresponding sub-chain segments together form a curved bar; a first through hole is formed on each of the sub-chain bases, when the When the iron core straight rod protrudes from the cavity and all the sub-chain bases close to the iron core straight rod sub-segment are on the same straight line, the iron core straight rod extends into the first through hole of the sub-chain base;

Each of the barbell plates includes: an embedded barbell plate base and at least one barbell ring,

The embedded barbell base is a cylinder, and a central through hole is formed at the center of the embedded barbell base, and an internal thread is formed in the central through hole for connecting with the barbell; A plurality of concentric annular grooves are formed on one side or two opposite sides of the embedded barbell base body, and each of the annular grooves is used to place a barbell ring. The two annular grooves are arranged at intervals, and the embedded barbell base body located outside the circumference of each of the annular grooves and close to the annular groove is a spacer ring, and a plurality of cavities are formed along the circumferential direction in each of the spacer rings, A clip structure is installed in each cavity, a connection starting point is fixed in each spacer ring, and a chute is fixedly installed at the top of each spacer ring, and the connection start point and chute of each spacer ring are located at the top of each spacer ring. Between the spacer ring and a pair of clip structures, the central angle is less than 45°, wherein each clip structure includes a rod, the rod is hinged in the cavity through a hinge, and one end of the rod is fixed There is a limiting member, a limiting hole is formed on the cavity opposite to the limiting member, the limiting hole communicates with the annular groove located inside the cavity, the other end of the rod is a free end, the A through hole is formed on the free end;

Sliders are installed in each of the chutes, and each of the connection starting points is connected to one end of a third steel wire, and the other end of the third steel wire passes through the rod in the spacer ring where the connection starting point is located. Through the hole and go out to the outside of the spacer ring to connect with the slider of the spacer ring, so that the third steel wire can be tightened after sliding the slider;

A second compression spring is connected between the side of each free end close to the central through hole and the cavity where the rod is located, and the second compression spring applies pressure to both sides to make the position-limiting member move from The limiting hole opposite to the limiting member protrudes into the annular groove;

The third steel wire is tightened, the rod rotates around the hinge and the limiting member moves back through the limiting hole to the cavity corresponding to the limiting member;

The barbell ring is a circular cylinder, the shape of the barbell ring is suitable for the size of the annular groove for placing the barbell ring, and when the limiting member is located in the annular groove, the limiting member prevents The barbell ring is removed from the annular groove.

In the above technical solution, a first limiting column is fixedly installed in each of the cavities for guiding the third steel wire passing through the through hole, wherein, the first limiting column and the clip structure The limiting members are respectively located on both sides of the second compression spring of the clip structure, and the first limiting column guides the tensioned third steel wire to drive the rod to compress the second compression spring.

In the above technical solution, in each clip structure, the third steel wire passing through the through hole is located between the second compression spring and the first limit post and is in close contact with the first limit post. bit post.

In the above technical solution, at least one second limiting column is fixedly installed in the cavity for guiding the trajectory of the third steel wire.

In the above technical solution, the cavities are evenly distributed in the spacer ring, the number of cavities in each spacer ring is greater than or equal to 3, and the number of cavities in each spacer ring is preferably 4 .

In the above technical solution, the second pressure spring is arranged radially.

In the above technical solution, when the limiting member prevents the barbell ring from moving out of the annular groove, the limiting member is located on the upper end face or side of the barbell ring; a depression is formed on the barbell ring groove, and when the limiting member prevents the barbell ring from moving out of the annular groove, the concave groove engages with the corresponding limiting member.

In the above technical solution, a concave-convex engagement structure is formed between the bottom end of the barbell ring and the bottom of the annular groove in which the barbell ring is placed, for preventing relative rotation between the barbell ring and the annular groove.

In the above technical solution, a first limiting ring is fixed on the straight rod section between the first sleeve and the connecting straight section, and the first limiting ring is close to the first sleeve, It is used for limiting the first steel wire wound outside the first sleeve on the first sleeve.

In the above technical solution, the first steel wire passes through the ring body of the first limiting ring and extends into the straight rod section.

In the above technical solution, a rotation locking device is installed on the first sleeve.

In the above technical solution, the rotation locking device includes: a first ring body that is threaded outside the straight rod section, and a plurality of a limiting pawl, wherein the first sleeve and the first ring body have opposite internal thread directions, and when the rotation locking device locks the first sleeve, the limiting pawl bears against the first sleeve a sleeve.

In the above technical solution, the number of the tensioning device is one, which is used to tighten the two sub-segments.

In the above technical solution, the tensioning device includes: a second sleeve, an extruding needle and a tension spring, and the second sleeve is sleeved on any one of the straight rod segments and can rotate around the straight rod segment , wherein, the end surface of the straight rod section is located in the second sleeve and forms a groove,

On the inner wall of the second sleeve, a plurality of limiting grooves are evenly distributed along the circumferential direction, and a limiting pin is arranged in each of the limiting grooves, wherein one end of the limiting pin is located at the limit The other end passes through the straight rod section and extends into the groove, and the tension spring passes through all the ends of the limit pins in the groove and forms a ring; the squeeze The needle head of the pressing needle is located in the center of the ring formed by the tension spring and presses the end of the limiting needle to the bottom of the corresponding limiting groove, and the pressing needle is connected to the second sleeve through an alternate switch. connected, after the alternate switch is pressed, the needle heads move out from the centers of the plurality of limit pins, and the tension spring drives the ends of the limit pins to move out of the corresponding limit grooves, wherein the second One end of the steel wire is connected outside the second sleeve, the second steel wire can be wound outside the second sleeve and the other end is connected to the inside of the straight rod section.

In the above technical solution, the connecting end of the second steel wire is connected to the inside of the straight bar section after going back and forth multiple times in the barbell bar along its length direction.

In the above technical solution, a second limit ring is fixed on the straight rod section between the second sleeve and the rotation locking device, and the second limit ring is close to the second sleeve , used to limit the second steel wire wound outside the second sleeve on the second sleeve.

In the above technical solution, the reciprocating paths of the second steel wires do not overlap.

In the above technical solution, the number of the tensioning devices is two and are respectively installed on the straight rod segments, and each of the tensioning devices is used to tighten one of the sub-chain segments.

In the above technical solution, the iron core straight rod is composed of two cylinders and one rod body, the cylinders and the rod body are parallel to each other, and the two cylinders are respectively located on the upper and lower sides of the rod body and fixed to the rod body .

In the above technical solution, the cross-section of each sub-chain matrix is circular.

Compared with the prior art, the barbell bar of the present invention perfectly combines the straight bar and the curved bar, which reduces the use of raw materials, makes bar changing as one likes, bids farewell to troubles, and makes carrying more convenient.

The built-in barbell base of the present invention has a simple structure. After installing the built-in barbell base of the present invention, when it is necessary to increase the weight of the barbell, it does not need to be repeatedly disassembled and installed, and only needs to gently slide the slide in the chute. block can be realized.

Description of drawings

Fig. 1 is the structural representation of barbell bar of the present invention;

Fig. 2 is an enlarged view of part A in Fig. 1;

Fig. 3 is an enlarged view of part B in Fig. 1;

Fig. 4 is an enlarged view of part C in Fig. 1;

Fig. 5 is a D-D sectional view in Fig. 2;

Fig. 6 is the side view of the barbell neutron chain matrix of the present invention;

Fig. 7 is the route diagram that is positioned at the second steel wire in the barbell bar;

Fig. 8 is the top view of the embedded barbell base of the present invention (the section line on the spacer ring is not drawn);

Fig. 9 is an enlarged view in the circle in Fig. 8 (the section line on the spacer ring is not drawn);

Fig. 10 is a cross-sectional view of the embedded barbell plate base of the present invention (the annular groove is located on the same side of the embedded barbell plate base, and the clip structure is not shown);

Fig. 11 is a cross-sectional view of the embedded barbell plate base of the present invention (the annular groove is located on the opposite side of the embedded barbell plate base, and the clip structure is not shown);

Fig. 12 is the barbell ring in the barbell plate of the present invention.

Among them, 1 is the first limit column, 2 is the slider, 3 is the chute, 4 is the spacer ring, 5 is the connection starting point, 6 is the clip structure, 6-1 is the second compression spring, 6-2 is the limit 6-3 is a hinge, 6-4 is a rod, 6-5 is a raised block, 7 is an annular groove, 8 is a central through hole, 9 is a third steel wire, 10 is a second limit post, 11 It is a barbell ring, 12 is a cavity, 13-1 is a connecting straight section, 13-2 is a sub-chain segment, 13-2-1 is a sub-chain matrix, 13-2-1-1 is a path hole, 13-2- 1-2 is a hinged rod, 13-2-1-3 is the first through hole, 13-3 is a straight rod section, 13-3-1 is the first limit ring, 13-3-2 is the first sleeve , 13-3-3 is the second limit ring, 13-3-4 is the groove, 13-3-5 is the limit groove, 13-3-6 is the extrusion needle, 13-3-7 is the second Sleeve, 13-3-8 is the limit needle, 13-3-9 is the first ring body, 13-3-10 is the limit claw, 13-3-11 is the iron core straight rod, 13-3-12 Be the first stage clip, 13-3-13 is the first steel wire, 13-3-14 is the extension spring, and 13-3-15 is the second steel wire.

Detailed ways

The limiter can be circular, square or in any shape.

The bar can be a rod or other shapes, as long as its function can be realized.

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1

A convenient barbell that does not require disassembly and assembly of a barbell bar, comprising: a barbell bar and two barbell pieces, the barbell bar includes: a connecting straight section 13-1 and loading sections located on both sides of the connecting straight section 13-1, the loading section is used for To install a barbell, each loading segment is used to install a barbell and includes: a straight bar section 13-3 and a sub-chain section 13-2, wherein the sub-chain section 13-2 is located at connecting the straight section 13-1 and the straight bar section 13-3 and are respectively hinged with connecting straight section 13-1 and straight bar section 13-3, wherein,

Each straight bar section 13-3 forms a cavity on the end face hinged with the sub-chain section 13-2, and an iron core straight bar 13-3-11 is placed in the cavity, and the outer thread of each straight bar section 13-3 A first sleeve 13-3-2 is connected (that is, the first sleeve is set outside the straight rod section), and the outside of the first sleeve 13-3-2 is connected with one end of a first steel wire 13-3-13, The first steel wire 13-3-13 can be wound outside the first sleeve 13-3-2 and the other end of the first steel wire 13-3-13 passes through the straight rod on which the first sleeve 13-3-2 is installed section 13-3 and connected with the iron core straight rod 13-3-11, used to pull the iron core straight rod 13-3-11 into the cavity; A first compression spring 13-3-12 is installed between the bottoms inside the cavity, the first compression spring rotates the first sleeve to loosen the first steel wire, and the first compression spring pushes out the iron core straight rod 13-3-11 from the cavity.

Each sub-chain segment 13-2 is composed of a plurality of sub-chain base bodies 13-2-1 hinged (for stability, a plurality of parallel hinged rods 13-2-1-2 can be used), and two sub-chain segments 13-2 Each is provided with a tensioning device or shares a tensioning device, and each tensioning device is installed on the connecting straight section 13-1 or the straight bar section 13-3 and is connected with one end of a second steel wire, and the second steel wire The other end is the connecting end, which passes through the sub-chain segment 13-2 and connects with the inside of the connecting straight segment 13-1 or the straight bar segment 13-3, and the tensioning device is tightened, and is located at the corresponding sub-chain segment 13-2. The sub-chain bases 13-2-1 jointly form a curved bar; each sub-chain base 13-2-1 is respectively formed with a first through hole 13-2-1-3, when the iron core straight bar 13-3- 11 When all sub-chain substrates 13-2-1 protruding from the cavity and close to the iron core straight rod 13-3-11 sub-chain segment 13-2 are on the same straight line, the iron core straight rod 13-3-11 stretches into the first through hole 13-2-1-3 of all the sub-chain substrates 13-2-1 of the sub-chain segment 13-2.

In the use method of the barbell bar of the present invention, when the sub-chain segment needs to be deformed into a curved bar, the iron core straight rod 13-3-11 is pulled into the cavity through the first sleeve, and at the same time, the sub-chain segment is reached through the tensioning device Form a curved rod. When the sub-chain segment needs to be deformed into a straight rod, the iron core straight rod 13-3-11 is extended into the first through hole 13 of all the sub-chain bases 13-2-1 of the sub-chain segment 13-2 by rotating the first sleeve -In 2-1-3, at this point, the 2 sub-segments form a straight bar.

Each barbell plate includes: an embedded barbell plate base and at least one barbell ring 11,

The base body of the built-in barbell plate is a cylinder, and a central through hole 8 is formed in the center of the base body of the built-in barbell plate, and an internal thread is formed in the center through hole 8, which is used to connect with the above-mentioned barbell bar. One side (as shown in Figure 10) or the opposite two sides (as shown in Figure 11) of the barbell base body are formed with a plurality of concentric annular grooves 7, each annular groove 7 is used to place a barbell ring 11, located in the embedded A plurality of annular grooves 7 on one side of the barbell base body are arranged at intervals, and the embedded barbell base body located outside the circumference of each annular groove 7 and close to the annular groove 7 is a spacer ring 4 (that is, the spacer ring and the annular groove are arranged at intervals) ), four cavities 12 are formed in the circumferential direction and evenly distributed in each spacer ring 4 (the outline of the cavities is not shown in Fig. 8 and Fig. 9), and a clip structure is installed in each cavity 12 6. A connecting starting point 5 is fixed in each spacer ring 4, and a chute 3 is fixedly installed at the top of each spacer ring 4. The connection starting point 5 of each spacer ring 4 and the chute 3 are located at the same spacer ring 4. Between the clip structures 6 and the central angle is less than 45°, each clip structure 6 includes a rod 6-4, the rod 6-4 is hinged in the cavity 12 through the hinge 6-3, the rod 6- One end of 4 is fixedly equipped with a limiter 6-2, and a limit hole (not shown in the figure) is formed on the cavity 12 opposite to the limiter 6-2, and the limit hole is located inside the cavity 12. The annular groove 7 communicates with each other, and the other end of the rod 6-4 is a free end, and a through hole is formed on the free end;

A slide block 2 is installed in each chute 3, and each connection starting point 5 is connected to one end of a third steel wire 9, and the other end of the third steel wire 9 passes through all the rods in the spacer ring 4 where the connection starting point 5 is located. The through hole of the piece 6-4 passes through the spacer ring 4 and connects with the slider 2 of the spacer ring 4, so that the third steel wire 9 can be tightened after sliding the slider 2;

A radially arranged second compression spring 6-1 is connected between the side of each free end close to the central through hole 8 and the cavity 12 where the rod 6-4 is located, which can be respectively arranged on the spacer ring and the rod A protruding block 6-5 is used to guide the direction of the second stage clip. The second compression spring 6-1 applies pressure to its two sides so that the limiting member 6-2 protrudes into the annular groove 7 from the limiting hole opposite to the limiting member 6-2;

The third steel wire 9 is tightened, the rod member 6-4 rotates around the hinge member 6-3 and the limiting member 6-2 moves back through the limiting hole to the cavity 12 corresponding to the limiting member 6-2.

The barbell ring 11 is a ring cylinder (as shown in Figure 12), and the shape of the barbell ring 11 is suitable for placing the size of the annular groove 7 of the barbell ring 11, when the stopper 6-2 is positioned in the annular groove 7 , the stopper 6-2 prevents the barbell ring 11 from moving out of the annular groove 7.

The method for using the above-mentioned barbell plates comprises the following steps:

1) Slide the slider 2 on the chute 3 until the stopper 6-2 moves back into the cavity 12, and put the barbell ring 11 into the annular groove 7 whose size is suitable;

2) Release the slider 2, and the second compression spring 6-1 drives the rod 6-4 to rotate around the hinge 6-3 until the limiter 6-2 moves back into the annular groove 7 and stops the annular groove 7 The inner barbell ring 11 is removed.

When it is necessary to increase the weight of the barbell plate, increase the number of barbell rings placed in the annular groove; when it is necessary to reduce the weight of the barbell plate, reduce the number of barbell rings placed in the annular groove. When it is necessary to take out the barbell ring from the annular groove, slide the slider 2 on the chute 3 until the stopper 6-2 moves back into the cavity, and the barbell ring 11 is taken out from the annular groove 7 .

Example 2

On the basis of Embodiment 1, a first limit ring 13-3-1 is fixed on the straight rod section 13-3 between the first sleeve 13-3-2 and the connecting straight section 13-1. A limit ring 13-3-1 is close to the first sleeve 13-3-2, and is used to limit the first steel wire 13-3-13 wound outside the first sleeve 13-3-2 to the first On the sleeve 13-3-2, the first steel wire 13-3-13 passes through the ring body of the first limiting ring 13-3-1 and extends into the straight rod section 13-3.

A rotation locking device is installed on the first sleeve 13-3-2, and the rotation locking device includes: a first ring body 13-3-9 that is threaded outside the straight rod section 13-3, and the first ring body 13 -3-9 A plurality of limit claws 13-3-10 are fixed on the side close to the first sleeve 13-3-2, wherein the first sleeve 13-3-2 and the first ring body 13-3 The direction of the inner thread of -9 is opposite. When the rotation locking device locks the first sleeve 13-3-2, the limiting pawl 13-3-10 bears against the first sleeve 13-3-2. A rubber pad can be fixed at the end of the limiting claw to increase friction.

For the embedded barbell base body, a first limiting column 1 is fixed in each cavity 12 for guiding the third steel wire 9 passing through the through hole, wherein the first limiting column 1 and the clip structure The stopper 6-2 of 6 is located on both sides of the second compression spring 6-1 of the clip structure 6 respectively, and the first stop post 1 guides the third steel wire 9 to drive the rod 6-4 to compress the second Stage clip 6-1. Wherein, in each clip structure 6 , the third steel wire 9 passing through the hole is located between the second compression spring 6 - 1 and the first limiting post 1 and is in close contact with the first limiting post 1 .

At least one second limit post 10 is fixedly installed in the cavity 12 for guiding the trajectory of the third steel wire 9 .

When the stopper 6-2 prevented the barbell ring 11 from moving out from the annular groove 7, the stopper 6-2 was located on the upper end surface or the side of the barbell ring 11; Using Method 1 and/or Method 2:

Mode 1: a recessed groove (not shown in the figure) is formed on the barbell ring 11. When the stopper 6-2 prevents the barbell ring 11 from moving out of the annular groove 7, the recessed groove is in phase with the corresponding stopper 6-2. engage.

Mode 2: A concave-convex engagement structure (not shown in the figure) is formed between the bottom end of the barbell ring 11 and the bottom of the annular groove 7 where the barbell ring 11 is placed.

Example 3

On the basis of embodiment 2, the number of tensioning device is 1, which is used to tighten two sub-chain segments 13-2, and the tensioning device includes: second sleeve 13-3-7, extrusion needle 13-3 -6 and tension spring, the second sleeve 13-3-7 is sleeved outside any straight rod section 13-3 and can rotate around the straight rod section 13-3, wherein the end face of the straight rod section 13-3 is located A groove 13-3-4 is formed in the second sleeve 13-3-7, and a plurality of limiting grooves 13-3-5 are evenly distributed along the circumferential direction on the inner wall of the second sleeve 13-3-7 , a limit needle 13-3-8 is arranged in each limit groove 13-3-5, wherein, one end of the limit needle 13-3-8 is located in the limit groove 13-3-5, and the other end passes through Pass through the straight rod section 13-3 and extend into the groove 13-3-4, and the tension spring passes through the end of all the limit pins 13-3-8 located in the groove 13-3-4 and forms a ring; The needle head of the extruding needle 13-3-6 is located at the center of the ring formed by the extension spring 13-3-14 and the end of the limiting needle 13-3-8 is pressed to the groove of the corresponding limiting groove 13-3-5 At the bottom, the extruding needle 13-3-6 is connected with the second sleeve 13-3-7 through an alternate switch (similar to the structure of a ballpoint pen pressing and ejecting the nib). The center of -3-8 moves out, and the extension spring drives the end of the limit pin 13-3-8 to move out from the corresponding limit groove 13-3-5. After pressing the alternate switch again, the needle head enters multiple limit pins At the center of 13-3-8, the needle head squeezes the limit needle 13-3-8 to make its end enter into the corresponding limit groove 13-3-5, so as to limit the rotation of the second sleeve. Wherein, one end of the second steel wire is connected outside the second sleeve 13-3-7, the second steel wire can be wound outside the second sleeve 13-3-7 and the other end is connected with the inside of the straight rod section 13-3.

The path of the second steel wire 13-3-15 in the barbell can be in many ways, as long as the stable adjustment of the sub-chain can be realized. In an embodiment of the present invention, the connecting end of the second steel wire 13-3-15 is connected with the inside of the straight bar section 13-3 after going back and forth multiple times in the barbell bar along its length direction (both going back and forth through the straight bar section 13- 3), the round-trip paths of the second steel wires do not overlap. For example, the second steel wire goes back and forth 2 times in the barbell bar, forming 4 lines parallel to the barbell bar in the barbell bar and can encircle a cuboid shape, as shown in Figure 7. The corresponding path hole 13-2-1-1 is used for passing the second steel wire.

A second limit ring 13-3-3 is fixed on the straight rod section 13-3 between the second sleeve 13-3-7 and the rotation locking device, and the second limit ring 13-3-3 is close to The second sleeve 13-3-7 is used to limit the second steel wire wound outside the second sleeve 13-3-7 on the second sleeve 13-3-7.

Example 4

On the basis of Embodiment 2, the number of tensioning devices is two, and each tensioning device is used to tighten one sub-chain segment 13-2.

The iron core straight rod 13-3-11 is composed of 2 cylinders and 1 rod body. The cylinder and the rod body are parallel to each other. The 2 cylinders are respectively located on the upper and lower sides of the rod body and fixed with the rod body. The rod 13-3-11 is suitable, and the cross section of each sub-chain matrix 13-2-1 is circular, as shown in FIG. 6 .

The invention ingeniously integrates the straight bar and the curved bar on one bar, and the bar can be changed without dismantling the barbell, which solves the troublesome problem of changing the bar and can quickly change the bar.

The present invention has been described as an example above, and it should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacements that can be made by those skilled in the art without creative labor all fall within the scope of this invention. protection scope of the invention.

Claims (10)

1. A disassembly-free convenient barbell is characterized in that it comprises: a barbell bar and 2 barbell plates, and the barbell bar includes: a connecting straight section (13-1) and a connecting straight section (13-1). 1) Loading segments on both sides, each of which is used to install one of the barbell plates and includes: a straight bar segment (13-3) and a sub-chain segment (13-2), wherein the sub-chain segment (13-2) is located between the connecting straight section (13-1) and the straight rod section (13-3) and is respectively hinged with the connecting straight section (13-1) and the straight rod section (13-3) ,in, Each of the straight rod segments (13-3) forms a cavity on the end face hinged with the sub-chain segment (13-2), and an iron core straight rod (13-3-11) is placed in the cavity , a first sleeve (13-3-2) is externally threaded on each of the straight rod sections (13-3), and the outside of the first sleeve (13-3-2) is connected with a first steel wire One end of (13-3-13) is connected, and the first steel wire (13-3-13) can be wound outside the first sleeve (13-3-2) and the first steel wire (13-3-13) The other end of the first sleeve (13-3-2) is inserted into the straight rod section (13-3) and connected with the iron core straight rod (13-3-11), for the The iron core straight rod (13-3-11) is drawn into the cavity; a first compression spring (13) is installed between the iron core straight rod (13-3-11) and the bottom end of the cavity. -3-12); Each of the sub-chain segments (13-2) is composed of a plurality of sub-chain bases (13-2-1) hinged, and each of the two sub-chain segments (13-2) is provided with a tensioning device or shares a Tensioning devices, each of which is installed on the connecting straight section (13-1) or straight bar section (13-3) and connected with one end of a second steel wire (13-3-15) , the other end of the second steel wire (13-3-15) is a connecting end, and the connecting end passes through the sub-segment (13-2) and connects with the connecting straight segment (13-1) or straight The internal connection of the rod segments (13-3), the tensioning device is tightened, and the sub-chain bases (13-2-1) located in the corresponding sub-chain segments (13-2) jointly form a curved rod; A first through hole (13-2-1-3) is respectively formed on the sub-chain base (13-2-1), and when the iron core straight rod (13-3-11) passes through the cavity When all the sub-chain substrates (13-2-1) extending inside and close to the sub-chain segments (13-2) of the iron core straight rod (13-3-11) are on the same straight line, the iron core straight rod (13 -3-11) extending into the first through hole (13-2-1-3) of the daughter chain substrate (13-2-1); Each of the barbell plates includes: an embedded barbell plate base and at least one barbell ring (11), The base body of the embedded barbell plate is a cylinder, and a central through hole (8) is formed at the center of the base body of the embedded barbell plate, and an internal thread is formed in the center through hole (8) for It is connected with the barbell bar; a plurality of concentric annular grooves (7) are formed on one side or two opposite sides of the embedded barbell base body, and each of the annular grooves (7) is used to place a barbell ring (11) , a plurality of annular grooves (7) located on one side of the embedded barbell base body are arranged at intervals, and the embedded barbell located outside the circumference of each of the annular grooves (7) and close to the annular groove (7) The sheet substrate is a spacer ring (4), and a plurality of cavities (12) are formed along the circumferential direction in each of the spacer rings (4), and a clip structure (6) is installed in each of the cavity (12) , a connection starting point (5) is fixedly installed in each spacer ring (4), and a chute (3) is fixedly installed at the top of each spacer ring (4), and the connection starting point of each spacer ring (4) (5) and the chute (3) are located between the same pair of clip structures (6) of the spacer ring (4) and the central angle is less than 45°, wherein each clip structure (6) includes a rod (6- 4), the rod (6-4) is hinged in the cavity (12) through a hinge (6-3), and one end of the rod (6-4) is fixed with a limiter (6 -2), a limiting hole is formed on the cavity (12) opposite to the limiting member (6-2), and the limiting hole communicates with the annular groove (7) located inside the cavity (12), The other end of the rod (6-4) is a free end, and a through hole is formed on the free end; A slide block (2) is installed in each said chute (3), each said connecting point (5) is connected with one end of a third steel wire (9), and the other end of said third steel wire (9) One end sequentially passes through the through hole of the rod (6-4) in the spacer ring (4) where the connection starting point (5) is located and passes out to the spacer ring (4) and the slider (2) of the spacer ring (4). ) is connected, so that the third steel wire (9) behind the sliding slider (2) can be tensioned; A second compression spring (6-1) is connected between the side of each free end near the central through hole (8) and the cavity (12) where the rod (6-4) is located. The compression spring (6-1) applies pressure to its two sides so that the limiting member (6-2) protrudes from the limiting hole opposite to the limiting member (6-2) to the annular groove (7 )Inside; Tighten the third steel wire (9), the rod (6-4) rotates around the hinge (6-3) and the limiter (6-2) moves back through the limit hole into the cavity (12) corresponding to the limiter (6-2); The barbell ring (11) is a ring cylinder, and the shape of the barbell ring (11) is suitable for the size of the annular groove (7) for placing the barbell ring (11), when the stopper ( 6-2) When located in the annular groove (7), the limiting member (6-2) prevents the barbell ring (11) from moving out of the annular groove (7). 2. The disassembly-free portable barbell according to claim 1, characterized in that, a first limit column (1) is fixedly installed in each cavity (12) for guiding through the The third steel wire (9) behind the through hole, wherein, the first limiting column (1) and the limiting member (6-2) of the clip structure (6) are respectively located on the second side of the clip structure (6). On both sides of the compression spring (6-1), the first limit column (1) guides the tensioned third steel wire (9) to drive the rod (6-4) to compress the second compression spring. Spring (6-1); In each clip structure (6), the third steel wire (9) passing through the through hole is located between the second compression spring (6-1) and the first limit post (1) And close to the first limit post (1); At least one second limit post (10) is fixed in the cavity (12) for guiding the trajectory of the third steel wire (9); The cavities (12) are evenly distributed in the spacer ring (4), the number of cavities (12) in each spacer ring (4) is greater than or equal to 3, each spacer ring (4) The number of cavities (12) is preferably four. 3. The disassembly-free convenient barbell according to claim 2, characterized in that, the second compression spring (6-1) is arranged radially; when the limiter (6-2) prevents the When the barbell ring (11) is removed from the annular groove (7), the stopper (6-2) is located on the upper end face or side of the barbell ring (11); A recessed groove is formed on the barbell ring (11), and when the stopper (6-2) prevents the barbell ring (11) from moving out of the annular groove (7), the recessed groove and the corresponding The said limit piece (6-2) of the meshing; A concave-convex engagement structure is formed between the bottom end of the barbell ring (11) and the groove bottom of the annular groove (7) where the barbell ring (11) is placed, which is used to hinder the connection between the barbell ring (11) and the annular groove. (7) Relative rotation occurs between them. 4. The disassembly-free convenient barbell according to claim 3, characterized in that, the straight line between the first sleeve (13-3-2) and the connecting straight section (13-1) A first limit ring (13-3-1) is fixed on the rod segment (13-3), and the first limit ring (13-3-1) is close to the first sleeve (13-3- 2) For limiting the first steel wire (13-3-13) wound outside the first sleeve (13-3-2) to the first sleeve (13-3-2). 5. The disassembly-free convenient barbell according to claim 4, characterized in that, the first steel wire (13-3-13) passes through the first limit ring (13-3-1) The ring body extends into the straight rod section (13-3); A rotation locking device is installed on the first sleeve (13-3-2). 6. The disassembly-free convenient barbell according to claim 5, characterized in that, the rotation locking device comprises: a first ring body (13) screwed outside the straight bar section (13-3) -3-9), a plurality of limit claws (13-3- 10), wherein, the internal threads of the first sleeve (13-3-2) and the first ring body (13-3-9) have opposite directions, when the rotation locking device locks the first sleeve When the sleeve (13-3-2) is in place, the stop pawl (13-3-10) bears against the first sleeve (13-3-2). 7. The disassembly-free convenient barbell according to claim 6, characterized in that, the number of said tensioning device is one, and is used to tighten two said sub-chain segments (13-2); The tensioning device includes: a second sleeve (13-3-7), an extruding needle (13-3-6) and a tension spring (13-3-14), and the second sleeve (13-3- 7) Covering any one of the straight rod segments (13-3) and being able to rotate around the straight rod segment (13-3), wherein the end surface of the straight rod segment (13-3) is located at the first A groove (13-3-4) is formed in the two sleeves (13-3-7), On the inner wall of the second sleeve (13-3-7), there are a plurality of limiting grooves (13-3-5) evenly distributed along the circumferential direction, and in each of the limiting grooves (13-3-5 ) is provided with a limit needle (13-3-8), wherein one end of the limit needle (13-3-8) is located in the limit groove (13-3-5), and the other end passes through The straight rod section (13-3) extends into the groove (13-3-4), and the tension spring (13-3-14) passes through all the limit pins (13-3-8 ) is located at one end in the groove (13-3-4) and surrounds a ring; the center of the ring and squeeze the end of the limiting needle (13-3-8) to the bottom of the corresponding limiting groove (13-3-5), the squeezing needle (13-3-6) The alternate switch is connected to the second sleeve (13-3-7). After the alternate switch is pressed, the needle moves out from the centers of the plurality of limit pins (13-3-8), and the pull The spring (13-3-14) drives the end of the limiting needle (13-3-8) to move out from the corresponding limiting groove (13-3-5), wherein the second steel wire (13-3 -15) one end is connected outside the second sleeve (13-3-7), and the second steel wire (13-3-15) can be wound around the second sleeve (13-3-7) The outside and the other end are connected with the inside of the straight bar section (13-3). 8. The disassembly-free convenient barbell according to claim 7, characterized in that, after the connecting end of the second steel wire (13-3-15) goes back and forth several times along its length in the barbell bar, Internal connection with the straight rod section (13-3); A second limit ring (13-3-3) is fixed on the straight rod section (13-3) between the second sleeve (13-3-7) and the rotation locking device, so The second stop ring (13-3-3) is close to the second sleeve (13-3-7), and is used to wrap the second sleeve (13-3-7) The steel wire (13-3-15) is limited on the second sleeve (13-3-7). 9. The disassembly-free convenient barbell according to claim 6, characterized in that, the reciprocating paths of the second steel wires (13-3-15) do not overlap; The number of the tensioning devices is 2 and are installed on the straight rod segments (13-3) respectively, and each of the tensioning devices is used to tighten one of the sub-chain segments (13-2). 10. The disassembly-free convenient barbell according to claim 9, characterized in that, the iron core straight rod (13-3-11) is composed of two cylinders and one rod body, and the cylinder and the rod body are connected to each other. Parallel, the two cylinders are respectively located on the upper and lower sides of the rod body and fixed with the rod body; The cross-section of each sub-chain matrix (13-2-1) is circular.