Weight plates and exercise equipment

Abstract

To prevent a plurality of weight plates from shifting in horizontal position. [Solution] An exercise device comprising an operating mechanism operated by a user for training, and a weight mechanism connected to the operating mechanism and including a plurality of stacked weight plates, the number of the plurality of weight plates connected to the operating mechanism being adjustable, each of the weight plates having N (an integer greater than or equal to 3) first fitting portions on its underside and N second fitting portions on its upper surface at positions corresponding to the N first fitting portions, and for two weight plates adjacent to each other in the stacking direction, each of the N first fitting portions formed on the underside of the upper weight plate fits into the N second fitting portions formed on the upper surface of the lower weight plate.

Description

[Technical Field]

[0001] The present invention relates to the art of weight plates and exercise equipment. [Background technology]

[0002] Various exercise equipment has been proposed to improve motor function. For example, Patent Document 1 discloses an exercise equipment for arm exercises. The technology in Patent Document 1 allows for the adjustment of exercise intensity by appropriately selecting the number of stacked weight plates (so-called weight stacks) to apply a load. Specifically, the weight plates are stacked such that the underside of the upper weight plate is in contact with the upper side of the lower weight plate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2022-104690 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the technology of Patent Document 1 has the problem that the multiple weight plates are easily displaced in the horizontal direction because they are in contact with each other at their flat surfaces. In consideration of the above, the present invention prevents the multiple weight plates from displacing in the horizontal direction. [Means for solving the problem]

[0005] [1] An exercise device comprising an operating mechanism operated by a user for training, and a weight mechanism connected to the operating mechanism and including a plurality of stacked weight plates, wherein the number of the plurality of weight plates connected to the operating mechanism can be adjusted, and wherein each of the weight plates has N (an integer of 3 or more) first fitting portions on its underside and N second fitting portions on its upper side at positions corresponding to the N first fitting portions, and wherein, for two weight plates adjacent to each other in the stacking direction, each of the N first fitting portions formed on the underside of the upper weight plate fits into the N second fitting portions formed on the upper weight plate.

[0006] [2] The weight plate has a plate portion and N fasteners that are fixed in a state where they penetrate the plate portion, and the fasteners include a shaft portion that penetrates the plate portion and a protrusion portion that is provided at one end of the shaft portion and is located on the upper surface side of the plate portion, and the first fitting portion is a part of the shaft portion that protrudes from the lower surface of the plate portion, and the second fitting portion is a hole portion formed in the surface of the protrusion portion on the opposite side to the shaft portion. [1]

[0007] [3] The exercise equipment of [1], wherein the first fitting portion is an axial member, the second fitting portion is a hole portion, and the hole portion includes a portion whose diameter continuously decreases from top to bottom.

[0008] [4] Any of the exercise equipments [1] to [3], comprising first and second supports extending in the stacking direction for supporting the plurality of weight plates, and each weight plate having a first notch on its periphery for engaging with the first support and a second notch on its periphery for engaging with the second support.

[0009] [5] Any of the exercise equipment [1] to [4], further comprising a connecting device that can connect the plurality of weight plates with a fastener, the fastener having a first shaft portion and a second shaft portion, and the connecting device having, for each of the plurality of weight plates, a first engagement portion with which the first shaft portion engages and a second engagement portion with which the second shaft portion engages, below the weight plate, so that when the first shaft portion engages with the first engagement portion below the weight plate at any position and the second shaft portion engages with the second engagement portion, the first shaft portion and the second shaft portion abut against the underside of the weight plate.

[0010] [6] A weight plate used to adjust exercise intensity in exercise equipment, having N (an integer of 3 or more) first fitting portions on the bottom surface and N second fitting portions on the top surface at positions corresponding to the N first fitting portions. [Effects of the Invention]

[0011] According to the present invention, it is possible to prevent the horizontal positions of the multiple weight plates from shifting. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a side view of an exercise machine according to an example of the present embodiment. [Figure 2] FIG. 4 is a rear view of the weight mechanism according to the embodiment of the present invention. [Figure 3] FIG. 2 is a top view of a weight plate according to an example of the present embodiment. [Figure 4] FIG. 2 is a rear view of a weight plate according to an example of the present embodiment. [Figure 5] FIG. 4 is a rear view of the weight mechanism according to the embodiment of the present invention. [Figure 6] FIG. 2 is a front view of a fastener according to an example of this embodiment. [Figure 7] FIG. 10 is a top view of a weight plate according to a modified example. [Figure 8] FIG. 10 is a rear view of a weight plate according to a modified example. [Figure 9] FIG. 10 is a rear view of a weight mechanism according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0013] [Embodiment] FIG. 1 is a side view of an exercise device 100 according to one example of the present embodiment. FIG. 1 illustrates an exercise device 100 (a so-called leg press) for training leg muscles. As illustrated in FIG. 1, the exercise device 100 of this embodiment includes an operating mechanism 10, a weight mechanism 20, a seat 40, a first holding mechanism 50, and a second holding mechanism 60. In practice, the exercise device 100 may include various other elements in addition to those shown in the figure, but these will be omitted for convenience.

[0014] 1 illustrates an X-axis, a Y-axis, and a Z-axis. The X-axis, the Y-axis, and the Z-axis are mutually orthogonal. The X-axis and the Z-axis are examples of axes parallel to a horizontal plane, and the Y-axis is an example of an axis parallel to a vertical plane.

[0015] The seat 40 is a portion on which a user sits. The operating mechanism 10 is a mechanism operated by a user for training. The operating mechanism 10 of this embodiment includes a movable portion 12 and a support portion 11 connected to the movable portion 12. The support portion 11 is a portion on which a user places their feet while seated on the seat 40. The movable portion 12 is movable along an axial guide G. The guide G is provided on the first holding mechanism 50 so as to be inclined at an arbitrary angle with respect to the Y axis, for example. When the user pushes the support portion 11 with their foot (stretching their knee), the movable portion 12 moves along the guide G in a direction away from the seat 40. On the other hand, when the user bends their knee, the movable portion 12 moves along the guide G in a direction toward the seat 40.

[0016] The weight mechanism 20 is a mechanism for increasing exercise intensity by applying a load to the movement of the user using the operating mechanism 10. The weight mechanism 20 is connected to the operating mechanism 10. In this embodiment, the weight mechanism 20 and the operating mechanism 10 are indirectly connected using multiple connecting members (tensioning member B and connector 25, described below). However, the manner of connection between the weight mechanism 20 and the operating mechanism 10 is not particularly limited as long as it is possible to apply a load to the movement of the user. Note that while FIG. 1 illustrates the case where the weight mechanism 20 is located on the back of the seat 40, the position of the weight mechanism 20 can be changed as appropriate depending on the type of exercise equipment 100.

[0017] FIG. 2 is a diagram (rear view) of the weight mechanism 20 as viewed from the positive direction of the X-axis. As illustrated in FIG. 2, the weight mechanism 20 includes multiple (11 in FIG. 2) stacked weight plates 21. The number of weight plates 21 is not particularly limited. In other words, the Y-axis is an axis parallel to the stacking direction of the multiple weight plates 21. Note that FIG. 2 illustrates the weight mechanism 20 when the operating mechanism 10 is in the initial position (a state in which the user is not pushing with their feet). When the operating mechanism 10 is in the initial position, all of the weight plates 21 are stacked.

[0018] FIG. 3 is a diagram (top view) of the weight plate 21 as viewed from the positive direction of the Y-axis, and FIG. 4 is a diagram (rear view) of the weight plate 21 as viewed from the positive direction of the X-axis. The weight plate 21 is a member having a predetermined weight. The weight plate 21 of this embodiment has a plate portion 220 and a fastener 230. The plate portion 220 is, for example, a long, plate-like member when viewed from above. The fastener 230 is fastened to the plate portion 220 via a through-hole provided in the plate portion 220. Details of the fastener 230 will be described later. It does not matter whether the weights of the weight plates 21 are different or the same.

[0019] As illustrated in FIG. 2, the weight plate 21 is supported by a first support column L1 and a second support column L2 so as to be movable in a direction along the Y axis (up and down direction). The first support column L1 and the second support column L2 are shaft-shaped members along the Y axis. The first support column L1 and the second support column L2 are held by a first holding mechanism 50. In this embodiment, the first support column L1 and the second support column L2 are illustrated as being cylindrical with a circular cross section. However, the shape of the first support column L1 and the second support column L2 is arbitrary, and the cross section may be polygonal or elliptical, for example.

[0020] As illustrated in FIG. 3, a first notch K1 and a second notch K2 are provided on the periphery of the plate portion 220. In this embodiment, the first notch K1 is formed on the periphery of the plate portion 220 in the negative direction of the Z axis, and the second notch K2 is formed on the periphery in the positive direction of the Z axis. In other words, the first notch K1 and the second notch K2 are portions recessed from the periphery (recesses). The first notch K1 is a portion with which the first support column L1 engages, and the second notch K2 is a portion with which the second support column L2 engages. In the following description, when it is not necessary to distinguish between the first notch K1 and the second notch K2, they will simply be referred to as "notch K," and when it is not necessary to distinguish between the first support column L1 and the second support column L2, they will simply be referred to as "support column L."

[0021] The first cutout K1 is formed according to the shape of the first support pillar L1, and the second cutout K2 is formed according to the shape of the second support pillar L2. The shape of the cutout K is not particularly limited, but is set so as to stably hold the weight plate 21 while allowing smooth movement in the vertical direction.

[0022] From the viewpoint of enabling the weight plate 21 to be attached to and detached from the first cutout portion K1 without removing the first support column L1 from the first holding mechanism 50, the length K1x of the first cutout portion K1 in the direction along the X axis (the length at the end on the negative side of the Z axis) is set to exceed the maximum width of the first support column L1 in the direction along the X axis (corresponding to the diameter in this embodiment). Similarly, from the viewpoint of enabling the weight plate 21 to be attached to and detached from the first cutout portion K1 without removing the second support column L2 from the first holding mechanism 50, the length K2x of the first cutout portion K1 in the direction along the X axis (the length at the end on the positive side of the Z axis) is set to exceed the maximum width of the second support column L2 in the direction along the X axis (corresponding to the diameter in this embodiment).

[0023] As illustrated in FIGS. 3 and 4, the weight plate 21 (plate portion 220) has a through-hole H in the center through which the connector 25 passes. As illustrated in FIG. 2, the connector 25 can connect multiple weight plates 21 with fasteners 90. Specifically, any number of the multiple weight plates 21 can be connected to the connector 25 from above (the positive direction of the Y-axis). FIG. 2 illustrates an example in which five weight plates 21 are connected to the connector 25. A load corresponding to the weight of the weight plates 21 connected to the connector 25 can be applied to the user. The connector 25 is an elongated member extending along the Y-axis. The weight plates 21 are connected to the connector 25 with fasteners 90. The specific shapes of the connectors 25 and will be described later.

[0024] The connector 25 is connected to the operating mechanism 10 via, for example, a tensioning member B and a plurality of pulleys P (three in FIG. 2). The pulleys P are held by, for example, a first holding mechanism 50. The type of tensioning member B is not particularly limited, and a chain or a wire is assumed. A combination of multiple types of tensioning members B may also be used. In other words, the weight mechanism 20 and the operating mechanism 10 are connected via the connector 25 and the tensioning members B. Note that the method of connecting the connector 25 and the operating mechanism 10 is not limited to the above example.

[0025] When the user pushes the support portion 11 with their foot from the state shown in Figure 2 where the weight plates 21 are not raised, the multiple weight plates 21 connected to the connectors 25 move upward (in the positive direction of the Y axis), as shown in Figure 5.

[0026] The connector 25 is provided with engagement portions U (U1, U2) corresponding to each weight plate 21. In the state of Fig. 2, the engagement portions U are provided between the two weight plates 21 of the connector 25 (specifically, between the upper plate portion 220 and the lower plate portion 220). The distance between the upper plate portion 220 and the lower plate portion 220 is, for example, 0.5 to 1.5 cm.

[0027] In this embodiment, an engagement portion U1 is provided at the end of the connector 25 on the negative side of the Z axis, and an engagement portion U2 is provided at the end on the positive side. When viewed from the positive side of the X axis, the engagement portion U1 is a portion cut out (recessed portion) from the periphery of the connector 25 on the negative side of the Z axis, and the engagement portion U2 is a portion cut out (recessed portion) from the periphery of the connector 25 on the positive side of the Z axis. Specifically, the connector 25 is provided with an engagement portion U1 (an example of a "first engagement portion") and an engagement portion U2 (an example of a "second engagement portion") below each of the multiple weight plates 21.

[0028] The fastener 90 includes a grip portion 93, a first shaft portion 91, and a second shaft portion 92. The first shaft portion 91 is a portion that engages with the engaging portion U1 of the connector 25, and the second shaft portion 92 is a portion that engages with the engaging portion U2 of the connector 25.

[0029] The user grasps the grip portion 93 and connects the desired number of weight plates 21 to the connector 25 by inserting the first shaft portion 91 and the second shaft portion 92, respectively, from the positive side of the X-axis into the engagement portions U1 and U2 located on the underside of the weight plate 21 (plate portion 220) that corresponds to the desired load. FIGS. 2 and 5 illustrate an example in which the first six weight plates 21 from the top are connected to the connector 25. That is, this is the case in which the shaft portions 91 and 92 of the fastener 90 are engaged (inserted) with the engagement portions U1 and U2 of the connector 25 below the sixth weight plate 21. Note that when the shaft portions 91 and 92 are engaged with the engagement portions U1 and U2, the fastener 90 is fixed so that movement in the up and down directions (positive and negative sides of the Y-axis) is inhibited.

[0030] Figure 6 is a front view focusing on the weight plate 21 (the sixth weight plate 21 from the top in Figure 5) with the fastener 90 inserted into the connector 25. As illustrated in Figure 6, the first shaft portion 91 and the second shaft portion 92 of the fastener 90 abut against the underside of the plate portion 220 of the weight plate 21. In other words, the fastener 90 is configured to have a shape such that the first shaft portion 91 and the second shaft portion 92 abut against the underside of the plate portion 220 when engaged with the engaging portions U1 and U2 of the connector 25.

[0031] The shapes of the connector 25 and the fastener 90 are not limited to the above examples. For example, a hole communicating with both the plate portion 220 and the connector 25 may be provided, and the fastener 90, which is a pin, may be inserted into the hole. However, the fastener 90 of this embodiment allows the weight plate 21 to be connected to the connector 25 more stably.

[0032] 3 and 4, the weight plate 21 has N (an integer of 3 or more) first fitting portions W1 provided on its lower surface, and N second fitting portions W2 provided on its upper surface at positions corresponding to the N first fitting portions W1. As shown in Fig. 2, in two weight plates 21 adjacent to each other in the stacking direction (direction parallel to the Y axis), the N first fitting portions W1 formed on the lower surface of the upper weight plate 21 each fit into the N second fitting portions W2 formed on the upper surface of the weight plate 21 located below.

[0033] In this embodiment, a configuration in which the first fitting portion W1 and the second fitting portion W2 are formed on the weight plate 21 by N fasteners 230 fixed to the plate portion 220 is illustrated as an example.

[0034] As illustrated in FIG. 4 , fastener 230 is fastened to plate portion 220 while passing through the plate portion 220. Fastener 230 includes a shaft portion 231 and a protruding portion 233 provided at one end of shaft portion 231 (on the positive side of the Y-axis). Shaft portion 231 is a portion that passes through plate portion 220. Protruding portion 233 is a portion that is located on the upper surface (the surface on the positive side of the Y-axis) of plate portion 220. Note that a through hole (not shown) for fastening fastener 230 is provided in plate portion 220. A thread groove that threads into each other is provided on the outer peripheral surface of a portion of shaft portion 231 of fastener 230 that corresponds to the through hole and the inner peripheral surface of the through hole. That is, fastener 230 is detachable and can be easily replaced, for example, when fastener 230 is worn or damaged.

[0035] The first fitting portion W1 in this embodiment is a portion of the shaft portion 231 that protrudes from the underside of the plate portion 220. There are no particular limitations on the length of the first fitting portion W1, but in this embodiment, it is set so that the first shaft portion 91 and the second shaft portion 92 of the fastener 90 can be inserted into the gap between the two weight plates 21 (plate portions 220). The first fitting portion W1 has, for example, a tapered shape in which the diameter continuously decreases toward the tip.

[0036] A hole (recess) corresponding to the first fitting portion W1 is formed on the surface of the protruding portion 233 opposite to the shaft portion 231. This hole functions as the second fitting portion W2 in this embodiment. The depth of the second fitting portion W2 is not particularly limited, but is set to a depth that prevents the weight plate 21 from moving horizontally when the first fitting portion W1 is fitted. The second fitting portion W2 has a tapered shape, for example, with a diameter that decreases toward the shaft portion 231 side (the negative side of the Y axis).

[0037] As can be understood from the above explanation, in this embodiment, by fixing the fastener 230 to the plate portion 220, N first fitting portions W1 are provided on the underside of the weight plate 21, and N second fitting portions W2 are provided on the upper surface at positions corresponding to the N first fitting portions W1.

[0038] 2, in two weight plates 21 adjacent to each other in the stacking direction, N first fitting portions W1 formed on the lower surface of the upper weight plate 21 respectively fit into N second fitting portions W2 formed on the upper surface of the lower weight plate 21. The two weight plates 21 are fixed together by the first fitting portion W1 of the upper weight plate 21 fitting into the second fitting portion W2 of the lower weight plate 21. In other words, the weight plates 21 are positioned in the horizontal direction by the first fitting portion W1 and the second fitting portion W2.

[0039] The upper weight plate 21 and the lower weight plate 21 are fixed to each other, for example, by the tip of the first fitting portion W1 of the upper weight plate 21 abutting against the inner peripheral surface of the second fitting portion W2 of the lower weight plate 21. It is not important whether the protruding portion 233 of the lower weight plate 21 abuts against the underside of the upper weight plate 21. A configuration in which the protruding portion 233 of the fastener 230 of the lower weight plate 21 does not abut against the underside of the upper weight plate 21 has the advantage of reducing wear on the weight plate 21. On the other hand, a configuration in which the protruding portion 233 of the fastener 230 of the lower weight plate 21 abuts against the underside of the upper weight plate 21 has the advantage of allowing the weight plates to be stably fixed to each other. However, as long as the first fitting portion W1 of the upper weight plate 21 is fitted into the second fitting portion W2 of the lower weight plate 21, the tip of the first fitting portion W1 of the upper weight plate 21 does not need to abut against the inner peripheral surface of the second fitting portion W2 of the lower weight plate 21. In this case, the protruding portion 233 of the lower weight plate 21 abuts against the underside of the upper weight plate 21, thereby fixing the upper weight plate 21 and the lower weight plate 21 to each other.

[0040] From the perspective of holding the weight plate 21 stably and horizontally, the N fasteners 230 are arranged so that the center of gravity of the weight plate 21 is located within a figure whose vertices are the N fasteners 230 when viewed from above. The N fasteners 230 are arranged as far apart as possible, and the closer the center of the figure whose vertices are the N fasteners 230 is to the center of gravity of the weight plate 21, the more stably the weight plate 21 can be held.

[0041] In this embodiment, N first fitting portions W1 formed on the lower surface of the upper weight plate 21 respectively fit into N second fitting portions W2 formed on the upper surface of the lower weight plate 21. That is, the horizontal position of the weight plate 21 is determined by the first fitting portions W1 and the second fitting portions W2. Therefore, it is possible to prevent the horizontal position of the multiple weight plates 21 from shifting. In this embodiment, by making the second fitting portions W2 tapered, the first fitting portions W1 slide along the inner circumferential surfaces of the second fitting portions W2, making it easier to fit the first fitting portions W1.

[0042] [Variations] The above-described exemplary embodiments can be modified in various ways. Specific modified embodiments that can be applied to the above-described embodiments are exemplified below. Two or more embodiments arbitrarily selected from the following examples can be combined as appropriate within the scope of not mutually contradictory.

[0043] (1) The exercise equipment 100 equipped with the weight mechanism 20 according to the present disclosure is not limited to the above examples. The weight mechanism 20 according to the present disclosure can be applied to a variety of exercise equipment 100 that can employ a weight stack (e.g., chest press, shoulder press, abductor, etc.). The configuration and presence or absence of the seat 40, the configuration of the operating mechanism 10, etc. can be changed as appropriate depending on the type of exercise equipment 100.

[0044] (2) In the above-described embodiment, there is no particular limitation on the shape of the plate portion 220. For example, as illustrated in Fig. 7, the width (length in the direction of the X-axis) of the plate portion 220 may be configured to continuously decrease toward the ends on the positive and negative sides of the Z-axis, or insertion holes for inserting shaft portions 231 (not shown) for fixing the plate portion 220 may be provided on both the positive and negative sides of the Z-axis across the through-hole H.

[0045] (3) In the above embodiment, a configuration in which a convex first fitting portion W1 is provided on the underside of the weight plate 21 and a concave second fitting portion W2 is provided on the underside is exemplified, but for example, the first fitting portion W1 may be concave and the second fitting portion W2 may be convex. In other words, the shapes of the first fitting portion W1 and the second fitting portion W2 are arbitrary as long as they can be fitted together.

[0046] (4) In the above-described embodiment, it is not essential to provide the first fitting portion W1 and the second fitting portion W2 by fastening the fastener 230. As illustrated in FIG. 8, for example, the first fitting portion W1 may be formed on the lower surface (surface in the negative direction of the Y-axis) of the plate portion 220, and the second fitting portion W2 may be formed on the upper surface (surface in the positive direction of the Y-axis) of the plate portion 220. The first fitting portion W1 and the second fitting portion W2 may be formed integrally with the plate portion 220. As can be understood from the above explanation, the first fitting portion W1 and the second fitting portion W2 may be provided on the weight plate 21 by later attaching another member (e.g., the fastener 230) independent of the plate portion 220 to the plate portion 220, or the first fitting portion W1 and the second fitting portion W2 may be formed on the plate portion 220 itself. That is, as long as N (an integer of 3 or more) first fitting portions W1 are provided on the lower surface of the weight plate 21 and N second fitting portions W2 are provided on the upper surface at positions corresponding to the N first fitting portions W1, the first fitting portions W1 and the second fitting portions W2 may be formed in any manner. That is, the fastener 230 is not essential.

[0047] (5) In the above embodiment, the weight plate 21 is held by fitting the support L into the notch K of the weight plate 21 (plate portion 220), but the manner in which the weight plate 21 is held relative to the support is not limited to the above example. For example, the support may be inserted into an insertion hole (through hole) formed in the plate portion 220. In the above configuration, for example, one insertion hole corresponding to the first support L1 and the second support L2 is provided in the weight plate 21 on opposite sides of the through hole.

[0048] (6) In the above-described embodiment, when changing the number of weight plates 21 connected to the connector 25, the position of the fastener 90 is changed with all of the weight plates 21 overlapping. The state in which all of the weight plates 21 overlap may be, for example, the state in which the operating mechanism 10 in Figure 2 is in the initial position.

[0049] 5 is operated (the mounting portion 11 is moved from the initial position), all of the weight plates 21 that are not connected to the connector 25 may be moved (toward the positive side of the Y-axis) so as to approach the lowest weight plate 21 among the weight plates 21 that are connected to the connector 25, thereby placing all of the weight plates 21 in a state where they overlap. In the example of FIG. 5, all (five) weight plates 21 that are not connected to the connector 25 are moved to a position where the first fitting portion W1 of the sixth weight plate 21 from the top of the eleven plates fits into the second fitting portion W2 of the seventh weight plate 21 from the top (the uppermost one that is not connected).

[0050] The method for moving the weight plates 21 not connected to the connectors 25 toward the positive side of the Y-axis is not particularly limited. As illustrated in FIG. 9 , for example, a mounting base 70 is placed below the lowest plate of the multiple plates, and the mounting base 70 is moved toward the positive side of the Y-axis using a tensioning member D such as a wire, thereby moving all of the weight plates 21 not connected to the connectors 25. One end of the tensioning member D is connected to the mounting base 70, and the other end is connected to a lever 80 that can be operated by a user (for example, a lever that can be operated by stepping on it with the foot). In the above configuration, when the operating mechanism 10 has moved from its initial position (for example, the state shown in FIG. 1 ), the operating mechanism 10 is locked using a locking mechanism (not shown) to prevent it from returning to its initial position. [Explanation of symbols]

[0051] 100: Exercise equipment 10:Operation mechanism 11: Placement section 12: Moving part 20: Weight mechanism 21: Weight plate 210: Plate section 230: Fastener 231: Shaft 233: Overhang 25: Connector 40: Seat 50: 1st holding mechanism 60:Second holding mechanism 70: Mounting table 80: Lever 90: Fastener 91: First shaft 92: Second shaft 93: Grip part B: Tensile member H:Through hole K1: First notch K2: Second notch L1: 1st pillar L2: 2nd pillar P: Pulley U1, U2: Engagement part W1: First fitting part W2: Second fitting part

Claims

1. an operating mechanism that is operated by a user for training; a weight mechanism connected to the operating mechanism and including a plurality of stacked weight plates; the number of the weight plates connected to the operation mechanism is adjustable; Each of the weight plates has N (an integer of 3 or more) first fitting portions provided on the lower surface, and N second fitting portions provided on the upper surface at positions corresponding to the N first fitting portions, In two weight plates adjacent to each other in the stacking direction, N first fitting portions formed on the lower surface of the upper weight plate fit into N second fitting portions formed on the upper surface of the lower weight plate, respectively; The weight plate has a plate portion and N fasteners that are fixed in a state of penetrating the plate portion, The fastener includes a shaft portion that penetrates the plate portion, and is provided at one end of the shaft portion, a protruding portion protruding from an upper surface or a lower surface of the plate portion, When the protruding portion protrudes from the upper surface of the plate portion, the first fitting portion is a portion of the shaft portion that protrudes from a lower surface of the plate portion, the second fitting portion is a hole portion formed in a surface of the protruding portion opposite to the shaft portion, When the protruding portion protrudes from the lower surface of the plate portion, the first fitting portion is a hole portion formed in a surface of the protruding portion opposite to the shaft portion, The second fitting portion is a portion of the shaft portion that protrudes from the upper surface of the plate portion. exercise equipment.

2. When the protruding portion protrudes from the upper surface of the plate portion, The hole includes a portion whose diameter continuously decreases from top to bottom.

10. The exercise device of claim 1.

3. a first support column and a second support column extending in the stacking direction and for supporting the plurality of weight plates; A first notch with which the first support rod engages and a second notch with which the second support rod engages are provided on the periphery of each weight plate.

10. The exercise device of claim 1.

4. a connecting tool that can connect the plurality of weight plates with fasteners; The fastener has a first shank and a second shank, The connecting tool is provided with a first engaging portion with which the first shaft portion engages and a second engaging portion with which the second shaft portion engages below the weight plate for each of the plurality of weight plates, When the first shaft portion is engaged with the first engagement portion and the second shaft portion is engaged with the second engagement portion below the weight plate at an arbitrary position, the first shaft portion and the second shaft portion come into contact with the lower surface of the weight plate.

10. The exercise device of claim 1.

5. A weight plate used to adjust exercise intensity in exercise equipment, N (an integer of 3 or more) first fitting portions are provided on the lower surface, and N second fitting portions are provided on the upper surface at positions corresponding to the N first fitting portions, respectively; The weight plate has a plate portion and N fasteners that are fixed in a state of penetrating the plate portion, The fastener includes a shaft portion that penetrates the plate portion, and is provided at one end of the shaft portion, a protruding portion protruding from an upper surface or a lower surface of the plate portion, When the protruding portion protrudes from the upper surface of the plate portion, the first fitting portion is a portion of the shaft portion that protrudes from a lower surface of the plate portion, the second fitting portion is a hole portion formed in a surface of the protruding portion opposite to the shaft portion, When the protruding portion protrudes from the lower surface of the plate portion, the first fitting portion is a hole portion formed in a surface of the protruding portion opposite to the shaft portion, The second fitting portion is a portion of the shaft portion that protrudes from the upper surface of the plate portion. Weight plate.

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