JPH0246927Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to an abdominal muscle training machine.

BACKGROUND TECHNOLOGY In general, business activities that provide instruction in various physical training programs under the name of so-called sports classes or clubs are becoming more and more popular, but these types of organizations require various types of training equipment. In general, strength training has traditionally been carried out by lifting and lowering heavy objects such as barbells and iron bells, but this type of strength training is generally practiced by sports experts. It is something that only amateurs can use, and it is dangerous, so it cannot be used easily by amateurs.

Therefore, recently, muscle training has become mainstream by configuring a frame that raises and lowers a weight that can be arbitrarily selected, and pulling a rope connected to the weight.This method is low risk and easy for anyone to train. Since it is possible to easily perform desired muscle strength training, it has become popular to equip sports clubs and the like.

Problems that the invention aims to solve However, it is natural that various variations can be constructed as a means of raising and lowering weights within the frame and applying the weight to the muscles of desired parts of the body to be trained. However, conventional training machines of this type generally cannot achieve effective strength training. I mean,
Since many training machines are designed for sports professionals and assume that the professional knows how to use the machine, amateurs will not be satisfied unless they are familiar with or are instructed how to use the machine. This is due to not being able to do strength training. For example, when training upper body muscles such as the pectoralis major, deltoid muscles, and biceps brachii, the lower body should be immobilized so that it hardly moves, but unless there is a way to sufficiently immobilize the lower body, amateurs However, there are problems such as the inability to effectively use off-the-shelf training machines.

Furthermore, since this type of training machine is designed for sports professionals, most of the machines are used without any kind of cover, with the moving parts such as the mechanism for raising and lowering weights and the rotating mechanism exposed. Therefore, amateurs may be at risk of injury by touching the moving parts, and women in particular may find it difficult to understand the structure and movement of the exposed mechanical parts, making them difficult to access even when they want to train with the machine. There was a certain aspect that had to arise.

In view of the above circumstances, the present invention aims to provide a machine that allows even amateurs to comfortably, easily, appropriately, and effectively perform muscle training.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a seat on the base, a footrest in front of the seat, and a load-bearing part behind it. A substantially U-shaped frame having a rotation axis on the side and extending to the back of the seat is rotatably supported in the front and back direction, and the frame has a back support part and a frame on both left and right sides sandwiching the back support part. A pair of arms having a rotation fulcrum and protruding in the vertical direction are provided so as to be rotatable in the left and right directions, and a chest plate is attached to the arms, and the arms are integrated with the frame by sandwiching the rotation axis thereof. A balance weight connected to the balance weight is provided, and
A sheave is pivotally attached to either one of the rotation shaft parts, and a load transmission part is provided by connecting a load cable connected to the load application part to the sheave, and the load application part and the load transmission part are connected to the sheave. An abdominal muscle training machine covered with a cover body was constructed.

Effect: According to the above structure of the present invention, a person sits on the seat, locks the legs to the footrest, puts the back against the back pads of the frame, and holds the pair of chest pads with both arms. Hold it close to your chest and repeat the bending and stretching movements.
The frame's own weight is eliminated by the balance weight, and only the weight of the weight of the loading device is accurately loaded, making it easy to train the abdominal muscles easily and comfortably.

Embodiment The present invention will be described below based on an illustrated embodiment. As shown in the figure, the base 1 is provided with a seat part 2, a footrest part 3 is provided at the front lower part of the seat part 2, and a load bearing part 4 is provided at the rear of the seat part 2. . A load transmission section 5 is provided between the load bearing section 4 and the seat section 2, and support arms 6, 6 made of square pipes are protruded from both sides of the load transmission section 5 near both sides of the seat section 2, respectively. A substantially U-shaped frame 8 having rotation shaft portions 7, 7 is rotatably supported at the ends of the support arms 6, 6, respectively. The frame 8 extends to the back of the seat part 2, and a back support part 9 is attached to the substantially central part of the frame 8. A pair of arms 1 having shaft attachment parts 10, 10 are mounted on both sides sandwiching this back support part 9.
1 and 11 are rotatably supported by the frame 8. Arms 11, 11 have chest pads 12, 12
are installed on each. Also, frame 8
Balance weights 13, 13 are connected integrally with the rotating shaft portions 7, 7, respectively, so that when the frame 8 rotates, its own weight is offset. On the other hand, as shown in FIGS. 4 and 5, the sheave 4 is connected to the frame 8 at either one of the rotating shaft portions 7,
One end of a load cable 15 housed in the load transmitting section 5 is connected to. The other end of the load cable 15 extends within the support arm 6 on one side, as shown in FIG.
It is connected to the sheave 16 of the load transmission section 5. The sheave 16 has the same diameter as the sheave 14, and is rotatably supported on the base 1 via a shaft 17. A pair of eccentric sheaves 18, 18 are eccentrically supported on the shaft 17. Ends of transmission cables 19 are connected to the eccentric sheaves 18, 18, respectively, and the transmission cables 19 are connected to pulleys 20, 2 which are pivotally supported on the base 1.
0 into the load bearing section 4. Inside the load bearing section 4, the transmission cable 19 is looped endlessly, and a movable pulley 21 is hung on the loop part, and one end of the cable 23 connected to the weight 22 is connected to the movable pulley 21 as a suspension support. has been done. The other end of the cable 23 is guided to the top of the support frame 24 of the load bearing section 4 via pulleys 20a, 20a and hangs down, and is connected to the guide rail 2 suspended within the support frame 24.
5 and 25, it is connected to a connector 26 that can be moved up and down. The weight 22 has through holes 2 drilled at predetermined intervals in the longitudinal direction of a rod 27 that is vertically attached to the connecting tool 26.
8, and a pin 30 is inserted into the through hole 28 and the through hole 29 to select an appropriate weight.

Note that FIG. 6 shows a schematic diagram of the above configuration. In addition, the eccentric sheave 18 is eccentrically supported on the shaft 17, so that it applies a gentle load at the beginning of rotation, a maximum load in the middle region, and then a load that follows a gentle descending line. It is composed of In addition, the load bearing part 4, the load transmission part 5, and the pivot points 7, 7 are covered with a resin cover 31 to prevent human hands, fingers, feet, etc. from entering the moving parts and causing injury. It is configured.

Next, to explain the operation of the above embodiment, as shown in FIG. Then, by holding the breast pad 12 to the chest with both rear arms, tilting the upper body forward in this state, and repeating the exercise of returning to the original state, that is, bending and stretching, the abdominal muscles will contract and be stimulated. You can train for that. That is, in FIG. 6, frame 8
When the sheave 14 rotates counterclockwise to pull the load line 15 forward, the sheave 16 is rotated clockwise. Rotate to. When the sheave 15 rotates, the eccentric sheave 18,
18 similarly rotates clockwise, pulling the transmission cable 19 forward and pulling the movable pulley 21 downward. Therefore, the movable pulley 21 pulls the rope 23 and the weight 22
Pull and lift the cables 23 and transmission cables 19.
and a weight 2 is attached to the frame 8 via the load cable.
A load of 2 is applied. Furthermore, since the frame 8 has the balance weights 13, 13 and its own load is zero, only the load of the weight 22 is applied to the person 32. In addition, the eccentric sheaves 18, 18, which are pivotally attached to the shaft 17, apply a gentle load at the beginning of the rotation of the frame 8, so that the muscles can be gently exercised, and the load becomes maximum at the middle stage. By applying a light load towards the end and selecting the load weight, you will be able to train optimally for yourself. The load weight is selected by appropriately moving the insertion position of the pin 30 up and down.

Effects of the invention According to the invention described above, a person training the abdominal muscles can sit down on the stool, hook the toes on the footrest, sit down and hold the chest pad, and the lower body will be strengthened. Rotating fulcrums are provided on both sides of the seat as a muscle training device that allows both experts and amateurs to easily take a fixed posture for the most effective training.It also serves as a muscle training device that repeatedly flexes and stretches the abdominal muscles. Since the frame has a structure in which it can be rotated in the front and back direction via a pair of arms protruding from the frame and a chest plate attached to the arms, it can be used, for example, to hold the frame with both hands and perform bending and stretching movements. In comparison, it is possible to deepen the angle of bending and stretching, which significantly improves the contraction momentum of the abdominal muscles, allowing for effective training of the abdominal muscles.
Furthermore, since the arm to which the breast pad is attached is pivoted on the frame and can be rotated, it can be adjusted to suit the chest width of the person training, effectively imparting the bending and stretching force of the upper body to the frame. Can be done. Since the load-carrying part and the load-transmitting part are covered with a cover body, it is possible to prevent the training person or those in the vicinity from inadvertently injuring themselves, and it also gives women a feeling of being easily stained. This allows for comfortable training.

[Brief explanation of the drawing]

Figure 1 is a front view, Figure 2 is a plan view, Figure 3 is a side view, Figure 4 is a longitudinal side view, Figure 5 is a front view of the main parts, and Figure 6 is a schematic diagram showing the load transmission system. be. 1... Base, 2... Seat part, 3... Footrest part, 4
...Load bearing part, 5...Load transmission part, 6...Support arm, 7...Rotation shaft part, 8...Frame, 9...
... Back support part, 10 ... Axial attachment part, 11 ... Arm, 12 ... Breast support part, 13 ... Balance weight, 14, 16 ... Sheave, 15 ... Load cable, 18 ... Eccentric sheave, 19...Transmission cable, 2
1... Moving pulley, 22... Weight.

Claims (1)

[Scope of utility model registration request] A seat part, a footrest part in front of the seat part, and a load bearing part behind the seat part are provided on the base, and rotation shaft parts are provided on both sides of the seat part and extend to the back part of the seat part. A U-shaped frame is pivotally supported so as to be rotatable in the front and rear directions, and the frame has a back support part and a pair of arms that protrude vertically and have pivot points on both the left and right sides sandwiching this part. The arm is rotatably provided, and a chest pad is attached to the arm, and the frame is provided with a balance weight that is integrally connected to the frame by sandwiching the rotation shaft, and either of the rotation shaft A sheave is pivoted on one side, a load transmission section is provided by connecting a load cable connected to the load bearing section to the sheave, and the load loading section and the load transmission section are covered with a cover body. Abdominal strength training machine featuring: