CN213527321U

CN213527321U - Leg training machine with variable force arm

Info

Publication number: CN213527321U
Application number: CN202022572098.1U
Authority: CN
Inventors: 王富健
Original assignee: Shandong Lide Sports Equipment Co ltd
Current assignee: Shandong Lide Sports Equipment Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-06-25
Anticipated expiration: 2030-11-10

Abstract

The utility model relates to a leg training machine with variable force arm, which comprises a fixed frame, a seat arranged on the frame and two training devices symmetrically arranged left and right, wherein the training devices comprise a rotating component connected on the frame in a rotating way, a counterweight arranged on the rotating component and an operating roller arranged at the lower end of the rotating component, the rotating component rotates front and back, the operating roller is transversely arranged and is positioned between the two rotating components, the operating roller is positioned below the front part of the seat, the utility model can play a good training effect for quadriceps femoris, the initial position of the operating roller during the training is adjusted by adjusting the position of the arm relative to the rotating arm, so as to adapt to different training requirements, and the force arm distance of the counterweight relative to the rotating center of the rotating component is changed along with the rotating stroke of the rotating component, thereby the training force of training personnel is changed, different training effects are achieved.

Description

Leg training machine with variable force arm

Technical Field

The utility model relates to a body-building apparatus technical field especially involves shank training machine field, specifically indicates a shank training machine that the arm of force changes.

Background

At present, along with the improvement of living standard of people, people pay more and more attention to self health, various fitness equipment is developed and marketed along with the improvement, in order to keep healthy and posture, the exercise for strengthening the weight of legs has great benefit for supporting the upper half of the body, the quadriceps femoris muscle is the thigh muscle of the human body and is positioned in front of the thigh muscle, the development of the quadriceps femoris muscle is the main requirement for strengthening the thighs, because the quadriceps femoris muscle is one of the largest and most powerful muscles of the human body, the number of training instruments for the quadriceps femoris muscle on the market is small at present, and professional leg exercise cannot be met.

Disclosure of Invention

The utility model discloses to prior art's not enough, provide a leg training machine that the arm of force of training is effectual, convenient to use changes.

The utility model discloses a through following technical scheme realizes, provides a shank training machine that arm of force changes, including the training device of fixed frame, rack-mounted seat and two bilateral symmetry settings, training device is including rotating the runner assembly of connection in the frame, installing the counter weight on the runner assembly and installing the operation roller at the runner assembly lower extreme, the runner assembly rotates from beginning to end, the operation roller transversely sets up and is located between two runner assemblies, the operation roller is located the below in seat the place ahead.

During the training, the user sits on the seat, pushes up ankle place ahead at the rear of operation roller, drives the runner assembly through the quadriceps femoris, makes the runner assembly lower extreme rotate forward to it realizes the exercise effect to drive the counter weight motion.

Preferably, the rotating group comprises a rotating arm rotatably connected with the rack, a position adjusting arm rotatably connected with the rotating arm, and a position fixing device for fixing the rotating arm and the position adjusting arm, and the operating roller is installed at the lower end of the position adjusting arm. The position control arm in this scheme rotates and connects on the rotor arm to fix through position fixing device, thereby can adjust the position of position control arm for the rotor arm, thereby adjust the initial position of operation roller when taking exercise, adapt to different exercise requirements.

Preferably, the position fixing device comprises an elastic bolt component arranged on the position adjusting arm and a position adjusting inserting plate fixedly connected to the rotating arm, and a plurality of inserting holes matched with the elastic bolt component are formed in the position adjusting inserting plate. Different jacks are inserted through the elastic bolt assembly in the scheme, and the position of the position adjusting arm and the position of the rotating arm are fixed.

Preferably, the training device further comprises a pull rod and an adjusting arm hinged to the rotating assembly, the balance weight is mounted on the adjusting arm, one end of the pull rod is hinged to the adjusting arm, and the other end of the pull rod is hinged to the rack. The counter weight is installed on the adjustment arm in this scheme, and when the runner assembly rotated, the pull rod drove the adjustment arm and rotates for the runner assembly to change the counter weight for the arm of force distance of runner assembly rotation center, thereby along with the rotation stroke of runner assembly, make training personnel's training power produce the change, play different training effects.

Preferably, the balance weight comprises a barbell shaft fixedly connected to the adjusting arm, and barbell discs are mounted on the barbell shaft. The barbell shaft in the scheme is provided with barbell pieces, and the weight of the balance weight can be adjusted by adjusting the size and the number of the barbell pieces.

Preferably, a backrest is arranged behind the seat. The back in this scheme is used for leaning on of training personnel back.

Preferably, the front and back positions of the backrest are adjustable. The position of the backrest can be adjusted to adapt to trainers with different heights.

As the optimization, the operation roller is installed on the operation roller regulating arm, the operation roller regulating arm articulates at the runner assembly lower extreme, the elasticity bolt subassembly is equipped with on the operation roller regulating arm, the rigid coupling has operation roller to adjust the picture peg on the runner assembly, it has a plurality of jacks with elasticity bolt subassembly adaptation to open on the operation roller adjusts the picture peg. The position of the operation roller can be adjusted by rotating the operation roller adjusting arm to different angles, so that the leg training device is suitable for training personnel with different leg lengths.

Preferably, the rotating assembly is fixedly connected with a power assisting block, and the power assisting block is positioned on one side, away from the operating roller, of the rotating shaft of the rotating assembly. The helping hand piece in this scheme plays the helping hand effect when training action just begins, and when the helping hand piece rotated under runner assembly and frame articulated shaft, the helping hand effect disappeared.

Preferably, handles are arranged on two sides of the seat. The handle in this scheme is used for gripping of both hands when training, and the training personnel of being convenient for exert oneself.

The utility model has the advantages that: the utility model discloses a shank training machine that arm of force changes can play very good training effect to the quadriceps femoris, through the position of adjusting position control arm for the rotor arm to adjust the initial position of operation roller when taking exercise, adapt to different exercise requirements, through changing the arm of force distance of counter weight for the runner assembly centre of rotation, thereby along with the rotation stroke of runner assembly, make training personnel's training power produce the change, play different training effects.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a left side view of the present invention;

FIG. 4 is a right side view of the present invention;

fig. 5 is a top view of the present invention;

fig. 6 is a cross-sectional view taken along the plane a-a of fig. 2 according to the present invention;

fig. 7 is a cross-sectional view taken along plane B-B of fig. 4 in accordance with the present invention;

FIG. 8 is an enlarged view of the portion D of FIG. 4 according to the present invention;

fig. 9 is a cross-sectional view of the elastic plug assembly of fig. 6, taken along the plane C-C;

shown in the figure:

1. rotating arm, 2, operating roller, 3, adjusting arm, 4, pull rod, 5, position adjusting arm, 6, seat, 7, backrest, 8, operating roller adjusting arm, 9, elastic bolt component, 10, frame, 11, boosting block, 12, handle, 13, operating roller adjusting inserting plate, 14, position adjusting inserting plate, 71, backrest plate, 72, connecting rod, 73, backrest inserting plate, 74, gas spring, 75, operating rod, 76, pulling plate, 77, inserting shaft, 78, fork shaft sleeve, 79, inserting shaft spring, 91, bolt sleeve, 92, bolt, 93, bolt spring, 94 and bolt handle.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 1-9, the utility model discloses a shank training machine that arm of force changes, including fixed frame 10, install the trainer that seat 6 and two bilateral symmetry set up in frame 10, frame 10 is including placing subaerial chassis and two grudging posts of rigid coupling on the chassis, trainer installs on the grudging post.

The front end of the seat 6 is slightly higher than the rear end of the seat, leather covers the upper end face of the seat 6, and sponge is filled under the leather.

Handles 12 are arranged on two sides of the seat 6, the handles 12 are fixed on the frame and are arranged horizontally.

Training device is including rotating the rotating assembly who connects in the frame, installing the counter weight on rotating assembly and installing operation roller 2 at the rotating assembly lower extreme, the rotating assembly rotates around, operation roller 2 transversely sets up and is located between two rotating assembly, operation roller 2 is located the below in 6 the place ahead of seat, and training personnel sit back on seat 6, and training personnel's popliteal nest is located 6 front ends of seat, and 6 front ends of seat are convex to support people's popliteal nest department, be convenient for have an effect, play the guard action to knee department simultaneously.

The rotating group comprises a rotating arm 1 connected with the rack 10 in a rotating mode and a position adjusting arm 5 connected with the rotating arm 1 in a rotating mode, the rotating arm 1 is formed by welding a rectangular pipe, the upper end of the rotating arm 1 is hinged to a vertical frame of the rack 10, and the hinged axis is horizontally arranged, so that the rotating arm 1 can swing back and forth. The position adjusting arm 5 is located between the two rotating arms 1, and the position adjusting arm 5 rotates coaxially with the rotating arms 1, so that the relative angle between the position adjusting arm 5 and the rotating arms 1 can be changed, and the position of the lower end of the position adjusting arm 5 can be adjusted.

Still including the position fixing device of fixed rotor arm 1 and position control arm 5, position fixing device is including installing elasticity bolt subassembly 9 and the rigid coupling on rotor arm 1 on position control arm 5 and position control picture peg 14, position control picture peg 14 is gone up to open has a plurality of jacks with elasticity bolt subassembly 9 adaptation, the jack is arranged along the rotation center of position control arm 5.

Elasticity bolt subassembly 9 is including fixed bolt cover 91 and insert the bolt 92 in bolt cover 91, the bolt cover 91 of elasticity bolt subassembly 9 on the position control arm 5 is fixed on position control arm 5, be equipped with the bolt spring 93 of cover on bolt 92 in the bolt cover 91, be equipped with the location boss on the bolt 92, the location boss is located between bolt spring 93 and the regulation picture peg 14 picture peg, the end cap is equipped with to the one end that regulation picture peg 14 was kept away from to bolt cover 91, the both ends of bolt spring 93 push up respectively on location boss position and end cap, thereby drive bolt 92 through the elasticity of bolt spring 93 and insert the jack, the bolt handle is equipped with to the tip of bolt 92, be convenient for extract bolt 92 through the hand.

The lower extreme at position control arm 5 is installed to operation roller 2, operation roller 2 is installed on operation roller regulating arm 8, operation roller regulating arm 8 articulates the lower extreme at position control arm 5, and the articulated shaft direction is parallel with rotor arm 1's pivot direction, and the lower extreme at operation roller regulating arm 8 is installed to operation roller 2, elasticity bolt subassembly 9 is equipped with on the operation roller regulating arm 8, the rigid coupling has operation roller regulation picture peg 13 on the rotor subassembly, it has a plurality of jacks with elasticity bolt subassembly 9 adaptations to open on operation roller regulation picture peg 13, and the jack of this department distributes along the articulated axis of operation roller regulating arm 8.

The operation roller 2 comprises an operation roller core shaft fixed on the operation roller adjusting arm 8 and a leather roller sleeved on the operation roller core shaft, the leather roller can rotate on the operation roller core shaft, the leather roller is cylindrical, the outer surface of the leather roller is covered with leather, and the leather is filled with sponge.

The rotating assembly is fixedly connected with a power assisting block 11, the power assisting block 11 is positioned on one side, away from the operating roller 2, of a rotating shaft of the rotating assembly, and the power assisting block 11 in the embodiment is fixedly connected to the upper end of the position adjusting arm 5.

The training device further comprises a pull rod 4 and an adjusting arm 3 hinged to the rotating assembly, the adjusting arm 3 is hinged to the lower portion of a hinged shaft of the rotating arm 1 and the rack, a hinged axis of the adjusting arm 3 is parallel to a hinged axis of the rotating arm 1 and the rack, the adjusting arm 3 is located in front of the rotating arm 1, one end of the pull rod 4 is hinged to the middle of the adjusting arm 3, the other end of the pull rod 4 is hinged to the rack 10, and a hinged point of the pull rod 4 and the rack 10 is located above the hinged axis of the rotating arm 1 and the rack.

The counter weight is installed on adjusting arm 3, the counter weight includes the barbell axle of rigid coupling on adjusting arm 3, barbell axle rigid coupling is in adjusting arm 3 keep away from the one end of rotor 1, the barbell piece is equipped with on the barbell axle.

A backrest 7 is arranged behind the seat 6, and the front and back positions of the backrest 7 can be adjusted, so that the chair is suitable for people with different heights.

The backrest comprises a backrest plate 71, the front end face of the backrest plate 71 is covered with leather, sponge is filled under the leather, the backrest plate 71 is connected with a rack 10 through at least two connecting rods 72, in the embodiment, the seat backrest plate 71 is connected with the rack 10 through 4 connecting rods 72, two ends of each connecting rod 72 are respectively hinged with the rack 10 and the backrest plate 71, a hinged shaft is transversely arranged, two connecting rods 72 are respectively arranged on two sides of the backrest plate 71, the connecting rods on the two sides are symmetrically arranged, and the two connecting rods on the same side are arranged in a front-back mode to form a quadrangle, so that the backrest plate 71 can move back and forth.

The seat 7 further comprises a positioning device for fixing the backrest plate 71 to the frame 10, the positioning device comprises an operating lever 75 hinged to the frame 10 and an inserting shaft 77 slidably connected to the frame 10, the frame 10 is fixedly connected with an inserting shaft sleeve 78, and the inserting shaft 77 is inserted into the inserting shaft sleeve 78 so as to be axially movable in the inserting shaft sleeve 78.

The positioning device further comprises a backrest insertion plate 73 fixedly connected onto the connecting rod 72, a plurality of insertion holes for accommodating the insertion shafts 77 are formed in the backrest insertion plate 73, the backrest insertion plate 73 moves in an arc shape, the insertion holes are arranged in an arc shape, and one ends of the insertion shafts 77 are inserted into the backrest insertion plate 73 to realize positioning.

One end of the operating lever 75 is provided with a pull-out plate 76, the pull-out plate 76 is provided with a vertical long hole, one end of the insertion shaft 77, which is far away from the backrest insertion plate 73, is inserted into the vertical long hole, a pull-out block is fixedly connected to the insertion shaft 77, the pull-out plate 76 is positioned between the pull-out block and the backrest insertion plate 73, and when the operating lever 75 rotates, the pull-out plate 76 is driven to move, so that the pull-out plate 76 drives the insertion shaft 77 to move in a direction far away from the backrest insertion plate 73, and the insertion shaft 77 is pulled.

An inserting shaft spring 79 sleeved on the inserting shaft 77 is arranged in the inserting shaft sleeve 78, an inserting shaft positioning boss is arranged on the inserting shaft 77 and located between the inserting shaft spring 79 and the backrest inserting plate 73, an inserting shaft sleeve plug is arranged at one end, far away from the inserting shaft 77, of the inserting shaft sleeve 78, two ends of the inserting shaft spring 79 respectively prop against the inserting shaft positioning boss and the inserting shaft sleeve plug, and therefore the inserting shaft 77 is driven to be inserted into the inserting hole through the elastic force of the inserting shaft spring 79.

The backrest 7 further comprises a gas spring 74 for pushing the backrest 7 forward, one end of the gas spring 74 being hinged to the connecting rod 72 and the other end being hinged to the frame 10.

The utility model discloses a use method: during the use, training personnel sits on the seat to adjust the front and back position of back, hold two handles 12 respectively through both hands, push up ankle place ahead at the rear of operation roller 2, drive rotating assembly through the quadriceps femoris, make the rotating assembly lower extreme rotate forward, thereby drive the counter weight motion and realize taking exercise effect.

As shown in fig. 3 and 4, when the rotating arm 1 swings forwards, due to the action of the pull rod 4, the adjusting arm 3 rotates clockwise relative to the hinge center, the counterweight moves towards the direction far away from the rotating center of the rotating arm 1, so that the force arm length of the counterweight is increased, the leg of the trainer can exert force to be increased along with the forward swing of the rotating arm, and the training effect is enhanced.

Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.

Claims

1. The utility model provides a leg portion training machine that arm of force changes which characterized in that: including fixed frame (10), install seat (6) and the trainer that two bilateral symmetry set up in frame (10), the trainer is including rotating the runner assembly of connection in the frame, installing counter weight on the runner assembly and installing operation roller (2) at the runner assembly lower extreme, the runner assembly front and back is rotated, operation roller (2) transversely set up and are located between two runner assemblies, operation roller (2) are located the below in seat (6) the place ahead.

2. A variable moment arm leg exercise machine according to claim 1, wherein: the rotating group comprises a rotating arm (1) connected with the rack (10) in a rotating mode, a position adjusting arm (5) connected with the rotating arm (1) in a rotating mode, and a position fixing device for fixing the rotating arm (1) and the position adjusting arm (5), wherein the operating roller (2) is installed at the lower end of the position adjusting arm (5).

3. A variable moment arm leg exercise machine according to claim 2, wherein: the position fixing device comprises an elastic bolt component (9) arranged on a position adjusting arm (5) and a position adjusting inserting plate (14) fixedly connected to the rotating arm (1), and a plurality of inserting holes matched with the elastic bolt component (9) are formed in the position adjusting inserting plate (14).

4. A variable moment arm leg exercise machine according to claim 1, wherein: the training device further comprises a pull rod (4) and an adjusting arm (3) hinged to the rotating assembly, the balance weight is installed on the adjusting arm (3), one end of the pull rod (4) is hinged to the adjusting arm (3), and the other end of the pull rod (4) is hinged to the rack (10).

5. The leg training machine with variable moment arm of claim 4, wherein: the balance weight comprises a barbell shaft fixedly connected on the adjusting arm (3), and barbell plates are arranged on the barbell shaft.

6. A variable moment arm leg exercise machine according to claim 1, wherein: a backrest (7) is arranged behind the seat (6).

7. The leg training machine with variable moment arm of claim 6, wherein: the back (7) is adjustable in front and back position.

8. A variable moment arm leg exercise machine according to claim 1, wherein: operation roller (2) are installed on operation roller regulating arm (8), operation roller regulating arm (8) articulate at the runner assembly lower extreme, elasticity bolt subassembly (9) are equipped with on operation roller regulating arm (8), the rigid coupling has operation roller adjusting plate (13) on the runner assembly, it has the jack of a plurality of and elasticity bolt subassembly (9) adaptation to open on operation roller adjusting plate (13).

9. A variable moment arm leg exercise machine according to claim 1, wherein: and a power assisting block (11) is fixedly connected to the rotating assembly, and the power assisting block (11) is positioned on one side, away from the operating roller (2), of the rotating shaft of the rotating assembly.

10. A variable moment arm leg exercise machine according to claim 1, wherein: handles (12) are arranged on two sides of the seat (6).