JP3219932U - Training aid - Google Patents

Abstract

[PROBLEMS] To stabilize the shaft portion even if any of a plurality of shaft portions having different diameters is inserted into the shaft support portion without excessively increasing the training aid and without reducing the design. Support. A training aid 1 is attached to an end portion of a shaft portion 21 of a training barbell, and rotatably supports the shaft portion 21 with the end portion serving as a fulcrum, and is inserted into the shaft support portion 11. The shaft portion 21 is held by the inner wall portion of the close contact portion and pressed by the end portion of the shaft portion of the shaft fixing portion 113. Thereby, the movement to the direction orthogonal to the insertion / removal direction with respect to the shaft support part 11 and the said direction is suppressed. [Selection] Figure 8

Description

  The present invention relates to a training auxiliary device that can support a shaft portion of a training barbell so that the shaft portion of the shaft portion can rotate freely.

  A barbell composed of a shaft portion and plate portions that are weights attached to both ends of the shaft portion is used to train the muscles of the human body. For example, as shown in Patent Document 1 below, this barbell is usually used by a person who performs training while keeping the shaft portion with the plate portions attached at both ends horizontal and directing the shaft portion upward from below. By lifting it up, it is used for strength training. In addition, in order to enable other uses of the barbell, the training auxiliary device is attached to the end portion of the shaft portion with the plate portion removed, and rotatably supports the shaft portion with the end portion as a fulcrum. Has been proposed. Part of this training aid is inserted and fixed in the shaft part insertion hole of the plate part placed on the floor, and the shaft support part that supports the shaft part rotates relative to the part. It is configured to move. A person who performs training grasps the end of the shaft portion that is not supported by the shaft support portion, and raises and lowers this end portion so that the end to which the training aid is attached is removed from the shaft portion. When it is turned as a fulcrum, the weight of the shaft at this time becomes a load, and exercise for training the muscles of the person performing the training is executed.

JP 2000-093549 A

  However, since the inner diameter of the shaft support part is formed in accordance with the diameter of the shaft part to be inserted into the shaft support part, the training auxiliary device is used by inserting a plurality of shaft parts having different diameters into the shaft support part. I can't do it. When the diameter of the shaft part is larger than the inner diameter of the shaft support part, the shaft part cannot be inserted into the shaft support part, and when the diameter of the shaft part is clearly smaller than the inner diameter of the shaft support part, it is inserted into the shaft support part. Since a gap is generated between the shaft portion and the inner wall of the shaft support portion, it is difficult for the shaft support portion to support the shaft portion to such an extent that it can withstand the rotation during training. Moreover, although it is possible to provide a training auxiliary device with a plurality of shaft support portions having different inner diameters, the training auxiliary device becomes larger and the design becomes worse.

  The present invention has been made in view of the above circumstances, and does not make the training aid extremely large and does not deteriorate the design, and any of a plurality of shaft portions having different diameters is inserted into the shaft support portion. Even if it is a case, it aims at enabling a shaft support part to support a shaft part stably.

A training auxiliary device according to one aspect of the present invention is a training auxiliary device that is attached to an end portion of a shaft portion of a training barbell and rotatably supports the shaft portion with the end portion serving as a fulcrum.
A shaft support portion that is formed in a cylindrical shape having a hollow portion therein, and in which the shaft portion is inserted into the hollow portion,
An insertion portion that is inserted into the insertion hole for inserting the shaft portion formed in the plate portion of the barbell, and is provided at an end portion of the insertion portion, and the insertion portion is inserted into the insertion hole in the state where the insertion portion is inserted. And a main diameter portion having a shaft support portion that pivotally supports the shaft support portion in a state of protruding from the plate portion,
The shaft support portion includes a through-hole penetrating from the peripheral surface of the main body into the cavity portion, and the shaft portion in which the end portion on the cavity portion side is inserted into the cavity portion in a state of being inserted into the through-hole. A shaft fixing portion having a length that can contact the peripheral surface of the shaft, and
The shaft portion of the shaft fixing portion has a length longer than the thickness of the peripheral surface of the main body of the shaft support portion, and is movable to the peripheral surface side of the main body of the shaft support portion or the cavity portion side. When the shaft portion moves to the cavity portion side, the end portion of the shaft portion on the cavity portion side comes into contact with the peripheral surface of the shaft portion inserted into the cavity portion, and the shaft portion Fixed,
The hollow portion of the shaft support portion supports the shaft portion in close contact with the circumferential surface of the shaft portion when the shaft portion is inserted into the hollow portion at a plurality of different positions in the length direction. A close contact part is provided,
Each contact portion provided at the plurality of positions has a different inner diameter, and supports the shaft portion in close contact with the peripheral surface of the shaft portion having a diameter that matches the inner diameter.
The shaft fixing portion is provided at each position in the length direction in the shaft support portion where the plurality of close contact portions are provided.

  According to the training auxiliary device according to the present invention, the training auxiliary device is not extremely enlarged, the design property is not deteriorated, and any of a plurality of shaft portions having different diameters is inserted into the shaft support portion. In addition, the shaft support portion can stably support the shaft portion.

It is a perspective view which shows the training auxiliary device which concerns on one Embodiment of this invention. It is a perspective view which shows the training auxiliary device made into the attitude | position different from FIG. It is a side view of the training auxiliary device seen from the arrow B direction in FIG. 1, and is a diagram showing the inside of the training auxiliary device. It is a perspective view which shows an example of the barbell used with a training auxiliary device. It is sectional drawing of the shaft support part which is a part of training assistance device, and is a figure which shows the internal structure of a shaft support part. It is sectional drawing of a shaft support part, and is a figure which shows the state which inserted the shaft part in the cavity part of a shaft support part. It is sectional drawing of a shaft support part, and is a figure which shows the state which inserted the shaft part in the cavity part of a shaft support part. It is a figure which shows the state by which the shaft support part which is supporting the shaft part was inserted in the plate part. It is a figure which shows a mode that the user is training using a training auxiliary device.

  Hereinafter, a training auxiliary device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a training auxiliary device according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the training auxiliary device in a posture different from that in FIG. FIG. 3 is a side view of the training assisting device viewed from the direction of arrow B in FIG. 1 and is a diagram illustrating the inside of the training assisting device. FIG. 4 is a perspective view showing an example of a barbell used together with a training aid. FIG. 5 is a cross-sectional view of a shaft support portion that is a part of the training aid, and shows the internal structure of the shaft support portion.

  The training aid 1 is attached to the shaft portion 21 of the training barbell 2. The training auxiliary device 1 is attached to an end portion of the shaft portion 21 in a state where the plate portion 22 serving as a weight is removed. The training auxiliary device 1 is attached to the end portion of the shaft portion 21 and rotatably supports the shaft portion 21 with the end portion as a fulcrum.

  The training auxiliary device 1 includes a shaft support portion 11 and a main diameter portion 12. The shaft support portion 11 has a cylindrical shape having a hollow portion 112 inside. The end of the shaft portion 21 is inserted into the cavity portion 112. The hollow portion 112 can be inserted with a plurality of shaft portions 21 having different diameters. For this reason, the cavity part 112 has each internal diameter according to the diameter of the some shaft part 21 inserted. The hollow portion 112 extends in the length direction of the shaft support portion 11, and the inner diameter at different positions in the length direction is formed in a size corresponding to the diameter of the corresponding shaft portion 21 among the plurality of shaft portions 21. (Details will be described later).

  The main diameter portion 12 includes an insertion portion 121 and a shaft support portion 122. The insertion part 121 is inserted into an insertion hole 221 (FIG. 8) for inserting the shaft part 21 formed in the plate part 22 of the barbell 2. The insertion portion 121 has a diameter that can be inserted into and removed from the insertion hole 221. The diameter of the insertion portion 121 is the same as or slightly smaller than the inner diameter of the insertion hole 221. When the diameter of the insertion part 121 and the inner diameter of the insertion hole 221 are in the relationship, it is assumed in the present embodiment that the diameter of the insertion part 121 matches the inner diameter of the insertion hole 221. When the diameter of the insertion portion 121 is slightly smaller than the inner diameter of the insertion hole 221, the insertion portion 121 can rotate with respect to the insertion hole 221 within the insertion hole 221.

  The shaft support portion 122 rotatably supports the shaft support portion 11. The shaft support part 122 is provided at the end of the insertion part 121. The shaft support portion 122 protrudes from the plate portion 22 when the insertion portion 121 is inserted into the insertion hole 221 of the plate portion 22.

  The shaft support portion 11 includes a shaft fixing portion 113 that fixes the shaft portion 21 inserted into the cavity portion 112 within the cavity portion 112. The shaft fixing portion 113 includes a through hole 1131, a shaft portion 1132, and a rotation operation portion 1133.

  The through hole 1131 penetrates from the peripheral surface of the main body 110 of the shaft support portion 11 to the cavity portion 112. The shaft portion 1132 is formed longer than the length of the through hole 1131 (that is, the thickness of the peripheral surface portion of the shaft support portion 11). The shaft portion 1132 has such a length that the tip of the shaft portion 1132 reaches the inside of the cavity portion 112 by being inserted into the through hole 1131 when the shaft fixing portion 113 is attached to the shaft support portion 11.

  A thread is formed on the peripheral surface of the shaft portion 1132 of the shaft fixing portion 113. When the shaft portion 1132 is inserted into the through hole 1131, the screw thread is screwed into a screw groove formed in the inner wall portion of the through hole 1131. That is, when the shaft portion 1132 is inserted into the through-hole 1131, the shaft portion 1132 is screwed into the through-hole 1131 while engaging the screw thread and the screw groove.

  Further, the shaft portion 1132 is provided with a rotation operation portion 1133. The rotation operation unit 1133 rotates with the shaft portion 1132 at the end of the shaft portion 1132 that is positioned outside the peripheral surface portion of the main body 110 when the shaft portion 1132 is inserted into the through hole 1131. It is attached as follows. The rotation operation unit 1133 is larger in the radial direction than the diameter of the shaft portion 1132.

  When the rotation operation unit 1133 is rotated in the circumferential direction of the shaft portion 1132, the shaft portion 1132 rotates in the circumferential direction. At this time, since the screw thread of the shaft portion 1132 is screwed into the screw groove, the shaft portion 1132 rotates along the screw groove. For this reason, the shaft portion 1132 moves in the direction toward the peripheral surface side of the main body 110 or the direction toward the cavity portion 112 by the guide by the thread groove according to the rotation direction. That is, the rotation operation unit 1133 is operated to rotate the peripheral surface of the shaft portion 1132 in the circumferential direction.

  As described above, since the shaft portion 1132 is formed to be longer than the thickness of the peripheral surface portion of the shaft support portion 11, the shaft portion 1132 is attached to the through hole 1131, and the main body 110 accompanying the rotation described above. The end portion of the shaft portion 1132 on the side of the cavity portion 112 protrudes into the cavity portion 112 due to the movement in the direction toward the circumferential surface side or the direction toward the cavity portion 112, or the thickness of the circumferential surface portion of the shaft support portion 11 Retracted inside. Thereby, the shaft portion 1132 is moved in the radial direction of the shaft support portion 11 by the rotation operation of the rotation operation portion 1133, and the end portion of the shaft portion 1132 is changed according to the position of the end portion of the shaft portion 1132 during the movement. The state of contact or non-contact with the peripheral surface of the shaft portion 21 in a state of being inserted into the hollow portion 112 is switched.

  In the hollow portion 112 of the shaft support portion 11, close contact portions 1121 are formed at a plurality of different positions in the length direction of the hollow portion 112. That is, the inner wall portion of the cavity portion 112 is formed as the plurality of contact portions 1121. The close contact portion 1121 is in close contact with the peripheral surface of the shaft portion 21 when the shaft portion 21 is inserted into the hollow portion 112 and wraps and supports the shaft portion 21.

  Each contact portion 1121 formed in the cavity portion 112 has a different inner diameter. Each contact portion 1121 is in close contact with the peripheral surface of the shaft portion 21 having a diameter that matches the inner diameter thereof. That is, each contact portion 1121 supports the shaft portion 21 in close contact with the peripheral surface of the shaft portion 21 having a corresponding diameter.

  The shaft fixing portion 113 is provided at each position in the length direction of the cavity portion 112 in the shaft support portion 11 where the plurality of close contact portions 1121 are provided.

  In addition, the end portion of the contact portion 1121 in the length direction of the cavity portion 112 is formed as a restriction portion 1121C that restricts the movement of the shaft portion 21 in the length direction inserted in the cavity portion 112 in the length direction. Yes. The restricting portion 1121C abuts on the end portion of the shaft portion 21 in a state of being inserted into the cavity portion 112, and the shaft portion 21 is located on the far side of the cavity portion 112 in the length direction (the side opposite to the opening portion 11A). Stop moving into the direction.

  In the present embodiment, a configuration is shown in which two close contact portions 1121 are provided as the plurality of close contact portions 1121 in the hollow portion 112 of the shaft support portion 11. The shaft fixing portion 113 is provided at each position in the length direction where the two close contact portions 1121 in the shaft support portion 11 are provided.

  Further, the main diameter portion 12 is provided with a base end portion 1221 </ b> A at the end portion of the insertion portion 121 as a part of the shaft support portion 122. The base end portion 1221A is provided in a direction larger than the diameter of the insertion portion 121 in a direction orthogonal to the length direction in which the insertion portion 121 extends. When the insertion portion 121 is inserted into the insertion hole of the plate portion 22, the proximal end portion 1221 </ b> A cushions the plate portion 22 and stops the insertion portion 121 from entering the plate portion 22 at the position of the proximal end portion 1221 </ b> A. .

  Further, a protruding portion 1221B is attached to the base end portion 1221A. The protrusions 1221B are formed at both ends of the base end portion 1221A in the orthogonal direction so as to protrude in a direction opposite to the insertion portion 121 side in the length direction. In a state in which the end portion of the shaft support portion 11 is located between the respective protrusions 1221B, the rod R (FIG. 3) portion of the connecting member 1221C made of, for example, a bolt and a nut is arranged in the direction orthogonal to each protrusion 1221B and the shaft. The end of the support part 11 is penetrated.

  The connecting member 1221 </ b> C includes, for example, an elongated columnar rod R that passes through each protruding portion 1221 </ b> B and the end portion of the shaft support portion 11. Each protrusion 1221B is provided with a connection hole for allowing the connection member 1221C to pass therethrough. The shaft support portion 11 is also provided with a connection hole 111 (FIG. 5) for allowing the connection member 1221C to pass therethrough. These connecting holes 111 have a diameter slightly larger than the outer diameter of the rod R portion of the connecting member 1221C.

  In the connecting member 1221C, the rod R portion passes through the connecting holes provided in the end portions of the protruding portions 1221B and the shaft support portion 11, and the connecting member 1221C is fastened by the nut on the outer surface of the protruding portion 1221B. . As a result, the connecting member 1221C connects each protruding portion 1221B and the shaft support portion 11. In this way, by allowing the connecting member 1221C to pass through each connecting hole, each projecting portion 1221B and the shaft supporting portion 11 are connected, and the shaft supporting portion 11 is provided around the connecting member 1221C with the connecting member 1221C as a rotation axis. It is held rotatably. That is, the end portion of the shaft support portion 11 is pivotally supported by the shaft support portion 122 so as to be rotatable about the connecting member 1221C.

  Next, the internal structure of the shaft support portion 11 will be described with reference to FIG. 5 shows a state in which the shaft fixing portion 113 is removed from the shaft support portion 11, and the connecting member 1221C is not shown.

  As shown in FIG. 5, in this embodiment, in the hollow portion 112 of the shaft support portion 11, close contact portions 1121 are provided at two different positions in the length direction.

  The shaft portion 21 is inserted into the cavity portion 112 from the opening portion 11 </ b> A of the shaft support portion 11. A close contact portion 1121 that receives and supports the shaft portion 21 having a predetermined diameter is formed on the inner wall portion of the cavity portion 112 at a position on the opening 11 </ b> A side in the length direction of the cavity portion 112. The shaft portion 21 is a shaft portion 21A, and the contact portion 1121 is a contact portion 1121A. The inner diameter of the close contact portion 1121A is the same as or slightly larger than the diameter of the shaft portion 21A. In the present embodiment, when the inner diameter of the close contact portion 1121A and the diameter of the shaft portion 21A are in the relationship, it is assumed that the inner diameter of the close contact portion 1121A matches the diameter of the shaft portion 21A.

  Furthermore, it is an inner wall part of the cavity part 112, Comprising: The diameter of shaft part 21A is located in the back | inner side (position opposite to the opening part 11A side) rather than the formation position of the contact part 1121A in the length direction of the cavity part 112. A close contact portion 1121 for receiving and supporting the shaft portion 21 having a predetermined diameter smaller than that is formed. The shaft portion 21 is a shaft portion 21B, and the contact portion 1121 is a contact portion 1121B. The inner diameter of the close contact portion 1121B is the same as or slightly larger than the diameter of the shaft portion 21B. Here, the inner diameter of the contact portion 1121B is smaller than the diameter of the shaft portion 21A. In the present embodiment, when the inner diameter of the contact portion 1121B and the diameter of the shaft portion 21B are in the relationship, it is assumed that the inner diameter of the contact portion 1121B matches the diameter of the shaft portion 21B.

  As shown in FIG. 5, the step difference between the close contact portion 1121A and the close contact portion 1121B becomes the restricting portion 1121C. When the shaft portion 21A is inserted into the cavity portion 112 from the opening portion 11A of the shaft support portion 11 by the restriction portion 1121C, the end portion of the shaft portion 21A in the length direction of the cavity portion 112 contacts the restriction portion 1121C. The movement in the direction of further entering the hollow portion 112 by the shaft portion 21A is stopped.

  On the other hand, when the shaft portion 21B is inserted into the cavity portion 112 from the opening portion 11A of the shaft support portion 11, the diameter of the shaft portion 21B is deeper than the restriction portion 1121C that is a step in the length direction of the cavity portion 112. Since it is set slightly smaller than the inner diameter of the close contact portion 1121B, the shaft portion 21B can pass through the close contact portion 1121A and enter the close contact portion 1121B. The shaft portion 21B can enter the close contact portion 1121B until the end portion of the shaft portion 21B hits the connecting member 1221C at the position of the connecting hole 111 of the main body 110 in the length direction.

  The attachment of the training auxiliary device 1 to the shaft portion 21A will be described. FIG. 6 is a cross-sectional view of the shaft support portion 11 and shows a state in which the shaft portion 21 </ b> A is inserted into the cavity portion 112 of the shaft support portion 11. When using the training aid 1 using the shaft portion 21 </ b> A, the user inserts the shaft portion 21 </ b> A into the cavity portion 112 from the opening portion 11 </ b> A of the shaft support portion 11. At this time, the user inserts the shaft portion 21 </ b> A into the cavity portion 112 of the shaft support portion 11 until the end portion thereof contacts the restriction portion 1121 </ b> C. At this time, since the diameter of the shaft portion 21A is set slightly smaller than the inner diameter of the close contact portion 1121A, the inner wall portion of the close contact portion 1121A wraps and holds the peripheral surface of the shaft portion 21A. The peripheral surface of the shaft portion 21A is in close contact with the inner wall of the close contact portion 1121A. In the present embodiment, when the peripheral surface of the shaft portion 21A is in close contact with the inner wall of the contact portion 1121A in this manner, the peripheral surface of the shaft portion 21A is in “close contact” with the inner wall of the contact portion 1121A. Suppose there is.

  In this state, the user operates the rotation operation portion of the shaft fixing portion 113 (hereinafter referred to as the shaft fixing portion 113A) attached to the position of the close contact portion 1121A among the shaft fixing portions 113 attached to the shaft support portion 11. 1133 is rotated, and the shaft portion 1132 of the shaft fixing portion 113 </ b> A enters the cavity portion 112 side in the radial direction of the shaft support portion 11. The user comes into a state where the end E of the shaft portion 1132 of the shaft fixing portion 113A comes into contact with the peripheral surface of the shaft portion 21A in the close contact portion 1121A and the end E presses the peripheral surface of the shaft portion 21A. Until the rotation operation unit 1133 of the shaft fixing unit 113A is rotated.

  Thus, the shaft portion 21A inserted into the shaft support portion 11 is inserted into and removed from the shaft support portion 11 by being held by the inner wall portion of the contact portion 1121A and being pressed by the end portion E of the shaft portion 1132 of the shaft fixing portion 113A. And since the movement in the direction orthogonal to the said direction is suppressed, it is hold | gripped by the shaft support part 11, and is supported stably. That is, when the shaft portion 1132 of the shaft fixing portion 113A moves to the cavity portion 112 side, the end portion on the cavity portion 112 side of the shaft portion 1132 contacts the peripheral surface of the shaft portion 21A inserted into the cavity portion 112. Then, the shaft portion 21A is fixed.

  Subsequently, attachment of the training auxiliary device 1 to the shaft portion 21B will be described. When using the training aid 1 using the shaft portion 21 </ b> B, the user inserts the shaft portion 21 </ b> B into the cavity portion 112 from the opening portion 11 </ b> A of the shaft support portion 11. FIG. 7 is a cross-sectional view of the shaft support portion 11 and shows a state in which the shaft portion 21 </ b> B is inserted into the cavity portion 112 of the shaft support portion 11.

  At this time, the shaft portion 21B passes through the close contact portion 1121A, and the end portion of the shaft portion 21B enters the close contact portion 1121B on the back side of the restricting portion 1121C. The user inserts the shaft portion 21B into the cavity portion 112 of the shaft support portion 11 until the end portion of the shaft portion 21B comes into contact with the connecting member 1221C attached to the close contact portion 1121B. At this time, since the diameter of the shaft portion 21B is set slightly smaller than the inner diameter of the close contact portion 1121B, the inner wall portion of the close contact portion 1121B wraps and holds the peripheral surface of the shaft portion 21B. The peripheral surface of the shaft portion 21B is in close contact with the inner wall of the close contact portion 1121B. In the present embodiment, when the peripheral surface of the shaft portion 21B is in close contact with the inner wall of the contact portion 1121B in this manner, the peripheral surface of the shaft portion 21B is in “close contact” with the inner wall of the contact portion 1121B. Suppose there is.

  In this state, the user operates the rotation operation portion of the shaft fixing portion 113 (hereinafter referred to as the shaft fixing portion 113B) attached to the position of the close contact portion 1121B among the shaft fixing portions 113 attached to the shaft support portion 11. 1133 is rotated, and the shaft portion 1132 of the shaft fixing portion 113B enters the cavity portion 112 side in the radial direction of the shaft support portion 11. The user comes into a state where the end E of the shaft portion 1132 of the shaft fixing portion 113B comes into contact with the peripheral surface of the shaft portion 21B in the close contact portion 1121B and the end E presses the peripheral surface of the shaft portion 21B. Until the rotation operation unit 1133 of the shaft fixing unit 113B is rotated.

  Accordingly, the shaft portion 21B inserted into the shaft support portion 11 is inserted into and removed from the shaft support portion 11 by being held by the inner wall portion of the contact portion 1121B and being pressed by the end portion E of the shaft portion 1132 of the shaft fixing portion 113B. And since the movement in the direction orthogonal to the said direction is suppressed, it is hold | gripped by the shaft support part 11, and is supported stably. That is, when the shaft portion 1132 of the shaft fixing portion 113B moves to the cavity portion 112 side, the end portion on the cavity portion 112 side of the shaft portion 1132 contacts the peripheral surface of the shaft portion 21B inserted into the cavity portion 112. Then, the shaft portion 21B is fixed.

  In addition, about the attachment of the shaft part 21B to the shaft support part 11, although an instruction | indication may be stabilized only by the press by the edge part E of the axial part 1132 of the shaft fixing part 113B in this way, the axis | shaft of the shaft fixing part 113A You may comprise so that the press by the edge part E of the part 1132 can be added further. In this case, when the shaft fixing portion 113A is attached to the shaft support portion 11 with the shaft portion 1132 inserted into the through-hole 1131, the length of the shaft portion 1132 of the shaft fixing portion 113A is close to the end E. The length is sufficient to contact the circumferential surface of the shaft portion 21B in the portion 1121B and press the circumferential surface of the shaft portion 21B (for example, the length L shown in FIG. 7). According to this, the instruction | indication of the shaft part 21B by the shaft support part 11 can be stabilized further.

  Next, attachment of the training auxiliary device 1 to the plate part 22 will be described. FIG. 8 is a diagram illustrating a state in which the shaft support portion 11 supporting the shaft portion 21 is inserted into the plate portion 22. As shown in FIG. 8, the shaft support portion 11 in a state where the shaft portion 21A or the shaft portion 21B (hereinafter simply referred to as the shaft portion 21) is inserted and supports the shaft portion 21 as described above. The insertion part 121 of the diameter part 12 is inserted into the insertion hole 221 of the plate part 22 and used for training.

  In addition, the attachment of the shaft part 21 to the shaft support part 11 may be performed before (i) the insertion part 121 of the main diameter part 12 of the shaft support part 11 is inserted into the insertion hole 221 of the plate part 22, (ii) You may carry out after inserting the insertion part 121 of the main diameter part 12 of the shaft support part 11 in the insertion hole of the plate part 22. FIG.

  In the present embodiment, the length of the insertion portion 121 of the main diameter portion 12 is a length that penetrates the two insertion holes 221 of the two plate portions 22 in a state where the two plate portions 22 are stacked horizontally. Is formed. However, the length of the insertion portion 121 of the main diameter portion 12 may be formed so as to penetrate the insertion hole 221 when one plate portion 22 is placed horizontally. When the length of the insertion portion 121 of the main diameter portion 12 is formed to be the length of the two insertion holes 221 of the two plate portions 22, the stability of supporting the training aid 1 by the plate portion 22 is improved. To do.

  In the state where the shaft support portion 11 supporting the shaft portion 21 as described above is inserted into the plate portion 22 and the training aid is supported by the plate portion 22, the shaft support portion 11 is supported by the shaft support portion 122. The shaft portion 21 is rotatable with respect to the main diameter portion 12 about the connecting member 1221C as an axis, so that the shaft portion 21 can be rotated in the arrow A direction shown in FIG. Since the plate portion 22 has a sufficient weight as a weight for training, the training aid 1 is stabilized by the plate portion 22 by inserting the insertion portion 121 of the main diameter portion 12 into the insertion hole 221 of the plate portion 22. Can be fixed.

  Therefore, according to the training auxiliary device 1 according to the above embodiment, the shaft support portion 11 stabilizes the shaft portion 21 even when any of the plurality of shaft portions 21 having different diameters is inserted into the shaft support portion 11. However, since each shaft portion 21 having a different diameter can be supported by one shaft support portion 11, the training auxiliary device 1 is extremely enlarged and the design is not deteriorated.

  For example, the diameter of the insertion portion 121 of the training assisting device 1 is set to match either the inner diameter of the close contact portion 1121A or the close contact portion 1121B. Thereby, if the user has the barbell 2 having the insertion hole 221 having a diameter that matches the diameter of the insertion portion 121 (the barbell 2 used earlier), the shaft portion 21 of the barbell 2 is attached to the contact portion. 1121A or the close contact portion 1121B is inserted into close contact, and the insertion portion 121 is inserted into the insertion hole 221 of the plate portion 22 of the barbell 2 (the plate portion 22 of the previously used barbell 2), The training auxiliary device 1 can be used. In this case, the user further has a new barbell 2 having another shaft portion 21 having a diameter different from that of the shaft portion 21 and having a diameter matching either the inner diameter of the close contact portion 1121A or the close contact portion 1121B. When purchased, it is possible to use the training auxiliary device 1 by inserting the other shaft portion 21 into the shaft support portion 11 of the training auxiliary device 1. The training auxiliary device 1 is used by inserting the insertion portion 121 into the insertion hole 221 of the plate portion 22 of the previously used barbell 2 instead of the plate portion 22 of the new barbell 2.

  Next, a training method using the training assistant 1 will be described. FIG. 9 is a diagram illustrating a state in which the user is training using the training auxiliary device 1.

  When training using the training auxiliary device 1, the user attaches the training auxiliary device 1 to the shaft portion 21 as described above, and the plate 121 is placed on the floor and placed on two plates. It inserts in the insertion hole of the part 22, and makes it the state which shows an example in FIG.

  Then, as shown in the example of FIG. 9, the user is an end portion of the shaft portion 21 attached to the training auxiliary device 1 in such a state, and is not inserted into the shaft support portion 11. Grab the end of the side. The user holds the end of the shaft portion 21 in this manner and, for example, moves the end of the shaft portion 21 upward from the lower side or lowers the upper side from the upper side. The shaft support 11 is rotated in the vertical direction around the connecting member 1221C using the member 1221C as a rotation axis. When the user rotates the shaft portion 21 in this way, the weight of the shaft portion 21 at the time of the rotation becomes a load, and the user's muscles are trained.

  Further, when the diameter of the insertion portion 121 is slightly smaller than the inner diameter of the insertion hole 221, the insertion portion 121 can be rotated with respect to the insertion hole 221 within the insertion hole 221, so the user can In a state where the end portion of the shaft portion 21 is grasped, for example, by moving the end portion of the shaft portion 21 in the left-right direction, the insertion portion 121 can be rotated with the radial center portion as a rotation axis. In this way, the user can train the muscle using the weight of the shaft portion 21 at the time of the rotation as a load also by the operation of rotating the shaft portion 21.

  In addition, this invention is not restricted to the structure of the said embodiment, A various deformation | transformation is possible. Moreover, in the said embodiment, the structure shown using FIG. 1 thru | or FIG. 9 is only one Embodiment of this invention, and is not the meaning which limits this invention to the said structure.

  For example, the shaft fixing portion 113 is configured such that a screw thread is provided in the shaft portion 1132 and a screw groove is provided in the through hole 1131, but the shaft portion 1132 is provided on the peripheral surface side of the main body 110 of the shaft support portion 11. Or the structure which moves to the cavity part 112 side is not limited to such a screw structure, and the shaft part 1132 may perform the movement by another structure.

DESCRIPTION OF SYMBOLS 1 Training assistance device 11 Shaft support part 11A Opening part 110 Main body 111 Connection hole 112 Cavity part 1121,1121A, 1121B Contact | adherence part 1121C Restriction part 113,113A, 113B Shaft fixing part 1131 Through-hole 1132 Shaft part 1133 Rotation operation part E End part 12 main diameter portion 121 insertion portion 122 shaft support portion 1221A base end portion 1221B projection portion 1221C connecting member 2 barbells 21, 21A, 21B shaft portion 22 plate portion 221 insertion hole

Claims (6)

A training auxiliary device attached to an end portion of a shaft portion of a training barbell and rotatably supporting the shaft portion with the end portion as a fulcrum,
A shaft support portion that is formed in a cylindrical shape having a hollow portion therein, and in which the shaft portion is inserted into the hollow portion,
An insertion portion that is inserted into the insertion hole for inserting the shaft portion formed in the plate portion of the barbell, and is provided at an end portion of the insertion portion, and the insertion portion is inserted into the insertion hole in the state where the insertion portion is inserted. And a main diameter portion having a shaft support portion that pivotally supports the shaft support portion in a state of protruding from the plate portion,
The shaft support portion includes a through-hole penetrating from the peripheral surface of the main body into the cavity portion, and the shaft portion in which the end portion on the cavity portion side is inserted into the cavity portion in a state of being inserted into the through-hole. A shaft fixing portion having a length that can contact the peripheral surface of the shaft, and
The shaft portion of the shaft fixing portion has a length longer than the thickness of the peripheral surface of the main body of the shaft support portion, and is movable to the peripheral surface side of the main body of the shaft support portion or the cavity portion side. When the shaft portion moves to the cavity portion side, the end portion of the shaft portion on the cavity portion side comes into contact with the peripheral surface of the shaft portion inserted into the cavity portion, and the shaft portion Fixed,
The hollow portion of the shaft support portion supports the shaft portion in close contact with the circumferential surface of the shaft portion when the shaft portion is inserted into the hollow portion at a plurality of different positions in the length direction. A close contact part is provided,
Each contact portion provided at the plurality of positions has a different inner diameter, and supports the shaft portion in close contact with the peripheral surface of the shaft portion having a diameter that matches the inner diameter.
The said shaft fixing | fixed part is a training auxiliary | assistance apparatus each provided in each position of the said length direction in which the said some contact | adherence part is provided in the said shaft support part. On the peripheral surface of the shaft portion of the shaft fixing portion, there is formed a screw thread that is screwed into a screw groove formed in an inner wall portion of the through hole when the shaft portion is inserted into the through hole. Further, the shaft portion is provided at an end portion located outside the peripheral surface portion of the shaft support portion in a state where the shaft portion is inserted into the through hole, and the screw thread is screwed into the screw groove. A rotation operation unit that is rotated in order to rotate the circumferential surface of the shaft portion in its circumferential direction in a state;
The shaft portion of the shaft fixing portion moves to the peripheral surface side or the cavity portion side of the main body of the shaft support portion by guidance by the thread groove by rotation in the circumferential direction. Training aid.   Ends of the plurality of contact portions provided in the cavity portion of the shaft support portion in the length direction are in contact with end portions of the shaft portion in a state of being inserted into the cavity portion, and the shaft The training auxiliary device according to claim 1 or 2, wherein a restriction portion for restricting an approaching movement of the portion in the length direction is provided. In the hollow portion of the shaft support portion, two close contact portions are provided as the plurality of close contact portions,
The training auxiliary device according to any one of claims 1 to 3, wherein the shaft fixing portion is provided at each position in the length direction where the two close contact portions are provided in the shaft support portion. .   The shaft support portion of the main diameter portion has protrusions that protrude in opposite directions to the insertion portion in the length direction at both ends in a direction orthogonal to the length direction of the main diameter portion. In the state where the end portion of the shaft support portion is located between the projection portions, the connecting member penetrates and connects the projection portions and the end portions of the shaft support portion in the orthogonal direction. The training auxiliary device according to any one of claims 1 to 4, wherein an end portion of the shaft support portion is pivotally supported by the shaft support portion so as to be rotatable about the connection member.   The shaft support portion of the main diameter portion has a shape extending larger than the diameter of the insertion portion in the orthogonal direction to restrict entry of the insertion portion into the plate portion, and the protrusion portion is attached. 6. A training aid according to claim 5 having a proximal end.