Weight plates and exercise equipment

Abstract

This prevents the horizontal positioning of multiple weight plates from shifting. [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, wherein the number of weight plates connected to the operating mechanism is adjustable, and each weight plate has N (an integer of 3 or more) first fitting portions on its lower surface, and N second fitting portions on its upper surface at positions corresponding to the N first fitting portions, and in two weight plates adjacent to each other in the stacking direction, each of the N first fitting portions formed on the lower weight plate fits into the N second fitting portions formed on the lower weight plate.

Description

Technical Field

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

Background Art

[0002] Various exercise equipment for enhancing exercise functions have been proposed. For example, Patent Document 1 discloses exercise equipment for exercising the arms. In the technology of Patent Document 1, in a plurality of stacked weight plates (so-called weight stack), the exercise intensity can be adjusted by appropriately selecting the number of plates to apply a load. Specifically, in the plurality of weight plates, the lower surface of the weight plate located above and the upper surface of the weight plate located below are stacked in a state of contact.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the technology of Patent Document 1, since the plurality of weight plates are in contact with each other on flat surfaces, there is a problem that the horizontal position is likely to shift. In view of the above circumstances, in the present invention, the horizontal position of the plurality of weight plates is prevented from shifting.

Means for Solving the Problems

[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 weight plates connected to the operating mechanism is adjustable, and each weight plate has N (an integer of 3 or more) first fitting portions on its lower surface, and N second fitting portions on its upper surface at positions corresponding to the N first fitting portions, and in two weight plates adjacent to each other in the stacking direction, each of the N first fitting portions formed on the lower weight plate fits into the N second fitting portions formed on the lower weight plate.

[0006] [2] The weight plate comprises a plate portion and N fasteners fixed to the plate portion, each fastener including a shaft portion that penetrates the plate portion and a protruding portion provided at one end of the shaft portion and located on the upper surface side of the plate portion, the first fitting portion being the portion of the shaft portion that protrudes from the lower surface of the plate portion, and the second fitting portion being a hole formed on the surface of the protruding portion opposite to the shaft portion [1].

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

[0008] [4] Any exercise device from [1] to [3], comprising a first support and a second support extending in the stacking direction for supporting the plurality of weight plates, wherein the periphery of each weight plate is provided with a first notch into which the first support engages and a second notch into which the second support engages.

[0009] [5] Any exercise device of [1] to [4] comprising a connector capable of connecting the plurality of weight plates by fasteners, wherein the fastener has a first shaft portion and a second shaft portion, and for each of the plurality of weight plates, the connector is provided with a first engaging portion that engages with the first shaft portion and a second engaging portion that engages with the second shaft portion below the weight plate, and when the first shaft portion engages with the first engaging portion and the second shaft portion engages with the second engaging portion below the weight plate at any position, the first shaft portion and the second shaft portion come into contact with the lower surface of the weight plate.

[0010] [6] A weight plate used to adjust the exercise intensity in exercise equipment, wherein the lower surface is provided with N (an integer of 3 or more) first fitting portions, and the upper surface is provided with N second fitting portions at positions corresponding to each of the N first fitting portions. [Effects of the Invention]

[0011] According to the present invention, it is possible to prevent the horizontal positional displacement of multiple weight plates. [Brief explanation of the drawing]

[0012] [Figure 1] This is a side view of an exercise device according to an example of this embodiment. [Figure 2] This is a rear view of a weight mechanism according to one example of this embodiment. [Figure 3] This is a top view of a weight plate according to one example of this embodiment. [Figure 4] This is a rear view of a weight plate according to one example of this embodiment. [Figure 5] This is a rear view of a weight mechanism according to one example of this embodiment. [Figure 6] This is a front view of a fastener according to an example of this embodiment. [Figure 7] This is a top view of the modified weight plate. [Figure 8] This is a rear view of the weight plate in a modified form. [Figure 9] This is a rear view of the weight mechanism according to a modified example. [Modes for carrying out the invention]

[0013] [Embodiment] Figure 1 is a side view of an exercise machine 100 according to an example of this embodiment. Figure 1 illustrates an exercise machine 100 for strengthening leg muscles (a so-called leg press). As illustrated in Figure 1, the exercise machine 100 of this embodiment comprises an operating mechanism 10, a weight mechanism 20, a seat 40, a first holding mechanism 50, and a second holding mechanism 60. In reality, the exercise machine 100 may include various other elements not shown, but these are omitted for convenience.

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

[0015] The seat 40 is the part where the user sits. The operating mechanism 10 is a mechanism operated by the user for training. The operating mechanism 10 in this embodiment comprises a movable part 12 and a resting part 11 connected to the movable part 12. The resting part 11 is the part on which the user rests their feet while seated in the seat 40. The movable part 12 is movable along an axial guide G. The guide G is provided on the first holding mechanism 50, for example, at an arbitrary angle inclined with respect to the Y axis. When the user pushes the resting part 11 with their feet (extends their knees), the movable part 12 moves along the guide G away from the seat 40. On the other hand, when the user bends their knees, the movable part 12 moves along the guide G towards the seat 40.

[0016] The weight mechanism 20 is a mechanism for increasing the exercise intensity by applying a load to the operation of the user using the operation mechanism 10. The weight mechanism 20 is connected to the operation mechanism 10. In the present embodiment, a case where the weight mechanism 20 and the operation mechanism 10 are indirectly connected using a plurality of connection members (tension member B and connector 25 described later) is illustrated. However, as long as it is possible to apply a load to the user's movement, the connection mode between the weight mechanism 20 and the operation mechanism 10 is not particularly limited. In FIG. 1, a case where the weight mechanism 20 is at the back of the seat portion 40 is illustrated, but the position of the weight mechanism 20 is appropriately changed according to the type of the exercise apparatus 100.

[0017] FIG. 2 is a view (rear view) when the weight mechanism 20 is viewed from the positive direction of the X-axis. As illustrated in FIG. 2, the weight mechanism 20 includes a plurality of (11 sheets in FIG. 2) stacked weight plates 21. The number of weight plates 21 is not particularly limited. It can also be said that the Y-axis is an axis parallel to the stacking direction of the plurality of weight plates 21. In FIG. 2, the weight mechanism 20 when the operation mechanism 10 is in the initial position (a state where the user is not pressing with the foot) is illustrated. When the operation mechanism 10 is in the initial position, all the weight plates 21 are in a stacked state.

[0018] FIG. 3 is a view (top view) when the weight plate 21 is viewed from the positive direction of the Y-axis, and FIG. 4 is a view (rear view) when the weight plate 21 is 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 the present embodiment has a plate portion 220 and a fixture 230. The plate portion 220 is, for example, a long plate-shaped member in a top view. The fixture 230 is fixed to the plate portion 220 through a through hole provided in the plate portion 220. Details of the fixture 23 continue to be described later. The weight of each weight plate 21 may be the same or different.

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

[0020] As illustrated in Figure 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. The first notch K1 and the second notch K2 can also be described as recessed portions (recesses) from the periphery. The first notch K1 is the portion into which the first support column L1 engages, and the second notch K2 is the portion into 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 notch K1 is formed according to the shape of the first support column L1, and the second notch K2 is formed according to the shape of the second support column L2. The shape of the notch K is not particularly limited, but is set to allow smooth vertical movement while stably holding the weight plate 21.

[0022] From the viewpoint of enabling the weight plate 21 to be attached to and detached from the first notch K1 without removing the first support column L1 from the first holding mechanism 50, the length K1x in the direction along the X axis of the first notch K1 (length at the negative end 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 second notch K2 without removing the second support column L2 from the first holding mechanism 50, the length K2x in the direction along the X axis of the second notch K2 (length at the positive end 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 Figures 3 and 4, the weight plate 21 (plate portion 220) has a through hole H in its center through which the connector 25 passes. As illustrated in Figure 2, the connector 25 can connect multiple weight plates 21 using fasteners 90. Specifically, any number of weight plates 21 can be connected to the connector 25 from above (positive direction of the Y-axis). Figure 2 illustrates the case where 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 a long, elongated member along the Y-axis. The weight plates 21 are connected to the connector 25 by fasteners 90. The specific shape of the connector 25 will be described later.

[0024] The connector 25 is connected to the operating mechanism 10 via a plurality (three in Figure 2) of pulleys P by a tension member B, for example. The pulleys P are held by a first holding mechanism 50, for example. The type of tension member B is not particularly limited, and chains or wires are examples of such members. Multiple types of tension members B may be used in combination. That is, the weight mechanism 20 and the operating mechanism 10 are connected via the connector 25 and the tension members B. The method of connecting the connector 25 and the operating mechanism 10 is not limited to the examples given above.

[0025] When a user pushes the mounting section 11 with their foot from the state shown in Figure 2, where the weight plate 21 is not lifted, the multiple weight plates 21 connected to the connector 25 move upward (in the positive direction of the Y axis), resulting in the state shown in Figure 5.

[0026] The connector 25 is provided with engaging portions U (U1, U2) corresponding to each weight plate 21. In the state shown in Figure 2, the engaging portions U are provided between the two weight plates 21 in 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 engaging portion U1 is provided at the negative end of the Z-axis of the connector 25, and an engaging portion U2 is provided at the positive end. When viewed from the positive side of the X-axis, the engaging portion U1 is a cut-out portion (recessed portion) from the negative periphery of the Z-axis of the connector 25, and the engaging portion U2 is a cut-out portion (recessed portion) from the positive periphery of the Z-axis of the connector 25. Specifically, for each of the multiple weight plates 21 of the connector 25, an engaging portion U1 (an example of the "first engaging portion") and an engaging portion U2 (an example of the "second engaging portion") are provided below the weight plate 21.

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

[0029] The user grasps the gripping part 93 and inserts the first shaft part 91 and the second shaft part 92 into the engaging parts U1 and U2 located on the underside of the weight plate 21 (plate part 220) corresponding to the desired load, starting from the positive side of the X-axis, thereby connecting the desired number of weight plates 21 to the connector 25. Figures 2 and 5 illustrate the case where the first six weight plates 21 from the top are connected to the connector 25. Specifically, the shaft parts 91 and 92 of the fastener 90 are engaged (inserted) into the engaging parts U1 and U2 of the connector 25 on the underside of the sixth weight plate 21. When the shaft parts 91 and 92 are engaged into the engaging parts U1 and U2, the fastener 90 is fixed in a state where movement in the vertical direction (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 lower surface of the plate portion 220 of the weight plate 21. In other words, the fastener 90 is shaped such that the first shaft portion 91 and the second shaft portion 92 abut against the lower surface 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 examples given above. For example, a hole may be provided in both the plate portion 220 and the connector 25, 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] As illustrated in Figures 3 and 4, the weight plate 21 has N (an integer of 3 or more) first fitting portions W1 on its lower surface, and N second fitting portions W2 on its upper surface at positions corresponding to each of the N first fitting portions W1. Then, as illustrated in Figure 2, in two weight plates 21 adjacent to each other in the stacking direction (direction parallel to the Y axis), each of the N first fitting portions W1 formed on the lower weight plate 21 fits into each of the N second fitting portions W2 formed on the upper weight plate 21.

[0033] In this embodiment, a configuration is shown 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.

[0034] As illustrated in Figure 4, the fastener 230 is fixed to the plate portion 220 by passing through the plate portion 220. The fastener 230 includes a shaft portion 231 and an overhang portion 233 provided at one end of the shaft portion 231 (the positive side of the Y-axis). The shaft portion 231 is the part that passes through the plate portion 220. The overhang portion 233 is the part located on the upper surface (the positive side of the Y-axis) of the plate portion 220. The plate portion 220 is provided with a through hole (not shown) for fixing the fastener 230. For example, screw grooves that screw into each other are provided on the outer circumferential surface of the part of the shaft portion 231 of the fastener 230 corresponding to the through hole and on the inner circumferential surface of the through hole. That is, the fastener 230 is detachable and can be easily replaced, for example, if the fastener 230 is worn or damaged.

[0035] In this embodiment, the first fitting portion W1 is the part of the shaft portion 231 that protrudes from the lower surface of the plate portion 220. The length of the first fitting portion W1 is not particularly limited, 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 through the gap between the two weight plates 21 (plate portion 220). The first fitting portion W1 has a tapered shape, for example, in which the diameter continuously decreases towards 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 such that the weight plate 21 cannot move 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 (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 lower surface of the weight plate 21, and N second fitting portions W2 are provided on the upper surface at positions corresponding to each of the N first fitting portions W1.

[0038] As illustrated in Figure 2, in two weight plates 21 adjacent to each other in the stacking direction, each of the N first fitting portions W1 formed on the lower surface of the upper weight plate 21 fits into each of the 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 fitting of the first fitting portions W1 of the upper weight plate 21 into the second fitting portions W2 of the lower weight plate 21. In other words, the horizontal position of the weight plates 21 is determined by the first fitting portions W1 and the second fitting portions 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 contacting the inner circumferential surface of the second fitting portion W2 of the lower weight plate 21. Whether or not the protruding portion 233 of the lower weight plate 21 contacts the lower surface of the upper weight plate 21 is irrelevant. A configuration in which the protruding portion 233 of the fastener 230 of the lower weight plate 21 does not contact the lower surface 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 contacts the lower surface of the upper weight plate 21 has the advantage of stably fixing the weight plates together. 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 contact the inner circumferential 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 can contact the lower surface of the upper weight plate 21, thereby fixing the upper weight plate 21 and the lower weight plate 21 together.

[0040] From the viewpoint of stably holding the weight plate 21 horizontally, the N fasteners 230 are arranged such that, in a top view, the center of gravity of the weight plate 21 is located within a figure whose vertices are the N fasteners 230. 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, each of the N first fitting portions W1 formed on the lower surface of the upper weight plate 21 fits into each of the 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 positions of the multiple weight plates 21 from shifting. In this embodiment, by making the second fitting portion W2 tapered, the first fitting portion W1 slides along the inner circumferential surface of the second fitting portion W2, making it easier to fit the first fitting portion W1.

[0042] [Differentiation] The forms exemplified above can be modified in various ways. Specific examples of modifications that can be applied to the aforementioned forms are given below. Two or more forms arbitrarily selected from the following examples can be merged as appropriate, provided they do not contradict each other.

[0043] (1) The exercise equipment 100 equipped with the weight mechanism 20 according to this disclosure is not limited to the examples given above. The weight mechanism 20 according to this 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 portion 40, the configuration of the operating mechanism 10, etc., can be appropriately changed depending on the type of exercise equipment 100.

[0044] (2) In the above-described embodiment, the shape of the plate portion 220 is not particularly limited. For example, as illustrated in Figure 7, the width (length in the direction of the X axis) of the plate portion 220 may be continuously reduced toward the positive and negative ends of the Z axis, or through holes may be provided on the positive and negative sides of the Z axis, with the through hole H in between, for inserting a shaft portion 231 (not shown) for fixing the plate portion 220.

[0045] (3) In the above-described embodiment, a configuration in which a convex first fitting portion W1 is provided on the lower surface of the weight plate 21 and a concave second fitting portion W2 is provided on the upper surface was illustrated, 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, the configuration of providing the first fitting portion W1 and the second fitting portion W2 by fixing the fastener 230 is not essential. As illustrated in Figure 8, for example, the first fitting portion W1 may be formed on the lower surface (the 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 (the 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 description, the first fitting portion W1 and the second fitting portion W2 may be provided on the weight plate 21 by attaching another member (for example, the fastener 230) independent of the plate portion 220 to the plate portion 220 afterwards, or the first fitting portion W1 and the second fitting portion W2 may be formed on the plate portion 220 itself. In other words, if 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 each of the N first fitting portions W1, then the method of forming the first fitting portions W1 and the second fitting portions W2 is arbitrary. In other words, the fasteners 230 are not essential.

[0047] (5) In the above-described embodiment, the weight plate 21 was held by fitting the support column 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 column is not limited to the above examples. For example, the support column may be inserted through 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 column L1 and the second support column L2 is provided in the weight plate 21 on opposite sides of the through hole.

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

[0049] Alternatively, when the operating mechanism 10 in Figure 5 is operated (the mounting section 11 has been moved from its initial position), all the weight plates 21 that are not connected to the connector 25 may be moved (towards the positive side of the Y-axis) so that they are closer to the lowest weight plate 21 that is connected to the connector 25, thereby creating a state where all the weight plates 21 are overlapping. In the example in Figure 5, all (5) 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 11 plates fits into the second fitting portion W2 of the seventh weight plate 21 from the top (the topmost of the unconnected ones).

[0050] The method for moving the weight plates 21 that are not connected to the connector 25 to the positive side of the Y-axis is not particularly limited. As illustrated in Figure 9, for example, a mounting base 70 can be placed under the lowest plate of a group of plates, and the mounting base 70 can be moved to the positive side of the Y-axis using a tension member D such as a wire, thereby moving all of the weight plates 21 that are not connected to the connector 25. One end of the tension 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 is in a state where it has moved from its initial position (for example, the state in Figure 1), a locking mechanism (not shown) is used to lock the operating mechanism 10 so that it does not return to its initial position. [Explanation of Symbols]

[0051] 100: Exercise equipment 10:Operation mechanism 11: Mounting section 12: Moving part 20: Weight mechanism 21: Weight Plate 220: Plate section 230: Fasteners 231: Shaft 233: Overhang 25: Connector 40: Seating area 50: 1st holding mechanism 60:Second holding mechanism 70: Mounting platform 80: Lever 90: Fasteners 91: First shaft section 92: Second shaft section 93: Grip part B: Tension member H:Through hole K1: First notch K2: Second notch L1: 1st pillar L2: 2nd pillar P: Pulley U1, U2: Engagement part W1: First mating section W2: Second mating section

Claims

1. The operating mechanism that the user operates for training, The device comprises a weight mechanism connected to the aforementioned operating mechanism and including a plurality of stacked weight plates, The number of weight plates connected to the operating mechanism can be adjusted. Each of the aforementioned weight plates is provided with N (an integer of 3 or more) first fitting portions on its lower surface, and N second fitting portions are provided on its upper surface at positions corresponding to each of the N first fitting portions. In two weight plates adjacent to each other in the stacking direction, each of the N first fitting portions formed on the lower surface of the upper weight plate fits into each of the N second fitting portions formed on the upper surface of the lower weight plate. The weight plate includes a plate portion and an overhanging portion that protrudes from the upper or lower surface of the plate portion. If the protruding portion extends from the upper surface of the plate portion, The first fitting portion is a portion that protrudes from the lower surface of the plate portion, The second fitting portion is a hole formed on the surface of the protruding portion opposite to the plate portion, If the protruding portion extends from the lower surface of the plate portion, The first fitting portion is a hole formed on the surface of the protruding portion opposite to the plate portion, The second fitting portion is a portion that protrudes from the upper surface of the plate portion, The aforementioned plate portions are stacked with a gap between them. exercise equipment.

2. A weight plate used to adjust the exercise intensity in exercise equipment, The lower surface is provided with N (an integer of 3 or more) first fitting portions, and the upper surface is provided with N second fitting portions at positions corresponding to each of the N first fitting portions. The weight plate includes a plate portion and an overhanging portion that protrudes from the upper or lower surface of the plate portion. If the protruding portion extends from the upper surface of the plate portion, The first fitting portion is a portion that protrudes from the lower surface of the plate portion, The second fitting portion is a hole formed on the surface of the protruding portion opposite to the plate portion, If the protruding portion extends from the lower surface of the plate portion, The first fitting portion is a hole formed on the surface of the protruding portion opposite to the plate portion, The second fitting portion is a portion that protrudes from the upper surface of the plate portion. Weight plates.

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