Exercise Rod

Abstract

To provide an exercise rod capable of adjusting a length thereof without excessive labor and time, and acquiring an exercise effect.SOLUTION: An exercise rod 1A comprises: a main body part 2 formed of a tubular member; and a left and right pair of slide rods 3, 4 which are formed of a slender tubular member which is slender relative to the main body part 2, each of the slide rods being provided slidably in an axial direction in a state in which one end side thereof is inserted into a left / right opening end of the main body part 2 and the other end side is exposed to an external part. An insertion depth of the slide rods 3, 4 to the main body part 2 is varied for varying a whole length in the exercise rod. The exercise rod further has fastening parts which have cap bodies 22a, 22b for positioning, the insertion depth of the slide rods 3, 4 to the main body part 2 and forming a part of engagement means for engaging the slide of the slide rods. By operating the fastening part, slide and engagement of the slide rods 3, 4 are performed while adjusting the length.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an exercise rod, and more particularly to an exercise rod used for exercises such as gymnastics and swinging. [Background technology]

[0002] Exercise rods (training rods) that are provided with weights and grips on both ends of a rod and are used as auxiliary tools for exercise (training) such as gymnastics have been well known. For example, the one described in Japanese Utility Model Laid-Open Publication No. 62-183866 has spheres of a given size provided on both ends of the rod, and the user is to perform a given exercise while holding the spheres on both ends.

[0003] However, such exercise rods are structured such that the overall length cannot be adjusted to match the length desired by the user, and therefore, depending on the type of exercise being performed, the length of the exercise rod used may not match the user's height or reach, and the user may not be able to obtain the expected exercise effect (training effect).

[0004] In contrast, the device described in Patent Publication No. 4925490 consists of a first member having a first threaded portion including a thread extending from one end to the other end, and a second member having a second threaded portion with which the first threaded portion engages, and the first member is moved in the axial direction by rotating the second threaded portion, making its length adjustable.

[0005] In this way, multiple components are connected axially by a screw structure, and the overall length can be changed by rotating one of the components, allowing the user to adjust the exercise rod to the desired length, making it easier to achieve the desired exercise effect.

[0006] However, in the case of an exercise rod in which the components are connected with a screw structure to allow the length to be adjusted, if it is necessary to change the overall length multiple times during a series of exercises, each such operation requires excessive effort and time, which can easily reduce the exercise effect. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Utility Model Application Publication No. 62-183866 [Patent Document 2] Patent No. 4925490 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention seeks to solve the problems described above, and has as its objective the creation of an exercise rod whose length can be adjusted without excessive time and effort, thereby making it easier to obtain the exercise effect. [Means for solving the problem]

[0009] Therefore, the present invention provides an exercise rod that comprises a main body made of a tubular member, and a pair of left and right sliding rods made of tubular members thinner than the main body, each of which is arranged to be axially slidable with one end inserted through the left and right open ends of the main body while the other end is exposed to the outside, and the overall length can be changed by changing the insertion depth of the sliding rods into the main body, and is characterized in that the exercise rod is provided with locking means for positioning the insertion depth of the sliding rods into the main body and locking their sliding, and the length can be adjusted by operating the locking means to slide and lock each sliding rod.

[0010] In this way, thinner tubular sliding rods are slidably inserted into both the left and right ends of the tubular main body, and the left and right sliding rods can be fixed by locking means when inserted to the desired depth.This makes it possible to adjust the length of the exercise rod without excessive effort and time, while making it easier to obtain the exercise effect.

[0011] In addition, in this exercise rod, the locking means is a structure in which annular cap bodies screwed onto the outer periphery of both left and right ends of the main body are rotated and moved axially to reduce the diameter of annular clamping bodies with slits whose outer periphery abuts against the inner periphery of the cap body, thereby pressing the inner periphery of the clamping body against the outer periphery of the sliding rod inserted through it, or a structure in which an axial or protruding locking body is inserted across a plurality of outer locking holes arranged in a row at predetermined intervals in the longitudinal direction of the outer periphery of the main body and an inner locking hole on the outer periphery of one end of the sliding rod inserted into the main body are positioned to a predetermined insertion depth that coincides with the position of the outer locking hole, and the locking means can be characterized as being based on the above-mentioned.

[0012] Furthermore, if the above-mentioned exercise rod is characterized in that the opposing ends of the pair of sliding rods are connected to each other inside the main body by a specified string-like member, even if the locking means is suddenly released during exercises such as swinging the exercise rod around, the sliding rod on the centrifugal side will be tethered by the string-like member, making it easier to prevent accidents caused by the sliding rod suddenly coming loose from the main body.

[0013] Alternatively, in the above-mentioned exercise rod, if the opposing ends of the pair of sliding rods are connected inside the main body by a compression coil spring that has an elastic repulsive force in the compression direction, and the compression coil spring exerts an elastic repulsive force against the action of shortening the length of the exercise rod, then since both sliding rods are connected by the compression coil spring, there is no need to worry about the sliding rod coming loose even if the locked state is released, and the exercise rod can also be used for exercises that apply pressure in the direction of shortening the exercise rod.

[0014] In this case, the compression coil spring has its longitudinal center portion fixed to the main body at the longitudinal center position inside the main body, preventing it from moving in the rotational or axial direction, and its connection to both ends of the sliding rod is such that the compression coil spring is inserted into the openings of the sliding rod and the spiral structure of the compression coil spring engages with a convex structure or columnar body provided on the inside of the opening side, and while this engagement locks the axial movement of the compression coil spring, the insertion depth can be changed by rotating the sliding rod.In addition to being able to use the compression coil spring for exercises that compress the exercise rod, the length can be adjusted by simply rotating the sliding rod while locking its sliding, without using the above-mentioned locking means.

[0015] Furthermore, if the above-mentioned exercise rod is characterized in that a cylindrical weight having a predetermined weight is installed inside the other end of each of the pair of sliding rods, it can be used in place of a barbell or dumbbell to perform various exercises.

[0016] In addition, if the above-mentioned exercise rod is characterized in that the other end of each of the pair of sliding rods is provided with a grip portion made of a soft material with a larger diameter than the main body portion and which is primarily intended for the user to hold in their hands, then even a long exercise rod can be made easy to handle, while making it easier to ensure safety in the event that both ends collide with the surrounding area. Effect of the Invention

[0017] According to the present invention, the sliding rods are inserted into both left and right ends of the tubular main body in a state in which the insertion depth can be changed, and the left and right sliding rods can be fixed at the desired depth by a locking means, making it possible to adjust the overall length without excessive effort and time, and to easily obtain the exercise effect. [Brief description of the drawings]

[0018] [Figure 1] FIG. 2 is a front view of an exercise rod according to an embodiment of the present invention, in which (A) shows the sliding rod immersed in the main body, (B) shows the disassembled state, and (C) shows the sliding rod extended. [Diagram 2] FIG. 2 is an enlarged partial view showing details of the end side of an application example of the exercise rod of FIG. 1. [Diagram 3] 2A and 2B are front views showing a modified example of the exercise rod of FIG. 1, in which (A) shows the sliding rod before it is extended, and (B) shows the rod disassembled. [Figure 4] FIG. 2 is an exploded front view showing an application example of the exercise rod of FIG. 1. [Diagram 5] 2A and 2B are exploded front views showing an application example of the exercise rod of FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0020] Referring to FIG. 1, the exercise rod 1A of this embodiment comprises a main body 2 consisting of a metal pipe 20 which is a tubular member, and a pair of left and right sliding rods 3, 4 consisting of metal pipes 30, 40 thinner than pipe 20, each of which is arranged so as to be axially slidable with one end inserted through the left and right open ends of pipe 20 of main body 2 and the other end exposed to the outside. The overall length of the sliding rods 3, 4 can be changed by changing the insertion depth of the sliding rods 3, 4 into main body 2.

[0021] This exercise rod 1A is equipped with fastening parts as locking means for locking the sliding of the sliding rods 3, 4 while determining the insertion depth of each of them relative to the main body 2. These fastening parts are formed by annular cap bodies 22a, 22b screwed into the outer periphery of both the left and right ends of the main body 2 to form part of it, and as shown in Fig. 1(C), the cap bodies 22a, 22b are turned to perform fastening / unfastening operations to slide and lock the sliding rods 3, 4, thereby allowing the length to be adjusted.

[0022] In this way, the sliding rods 3, 4 consisting of tubular pipes 30, 40 thinner than the tubular main body 2 are slidably inserted into both the left and right ends of the tubular main body 2, and when the left and right sliding rods 3, 4 are inserted to the desired depth, the sliding of the sliding rods can be locked and fixed by the tightening portion, which is the locking means.This makes it possible to adjust the rod length without excessive effort and time, making it easier to obtain the exercise effect.

[0023] In addition, the main body 2 is provided with cylindrical grip portions 21a, 21b made of a soft material such as foam rubber which cover specified areas on both the left and right ends of the metal pipe 20, and the pair of sliding rods 3, 4 are each provided with skewered, dumpling-shaped grip portions 31, 41 made of a soft material and having a larger diameter than the main body 2 at specified areas on the exposed other ends, which are primarily intended to be held by the user in their hands. This makes the exercise rod 1A easy to handle even when extended, while also ensuring safety in the event that both ends collide with the surroundings.

[0024] Although detailed illustrations are omitted, the fastening portion, which is the locking means in this exercise rod 1A, has cap bodies 22a, 22b formed in a tapered shape at the tip side of the inner space and has a screw groove cut into the inner surface on the base end side, and is each arranged in a rotatable state while being screwed into threads formed on the outer surface of both the left and right ends of pipe 20 of the main body portion 2.

[0025] The cap bodies 22a, 22b are then rotated around the axis while being screwed in and moved in the axial direction, thereby reducing the diameter of the tightening bodies (not shown), which are annular resin parts with tapered outer circumferential surfaces and axially cut slits, and the inner circumferential surfaces of the sliding rods 3, 4 inserted into the tightening bodies are pressed against the outer circumferential surfaces of the pipes 30, 40, thereby locking and unlocking the sliding, and the locking and unlocking operations can be performed in a short time using simple procedures.

[0026] Fig. 2 shows the characteristic parts of exercise rod 1B, which is an application of exercise rod 1A described above. In exercise rod 1B, cylindrical metal weights 200 having a predetermined weight are installed inside pipes 30, 40 on the other end side where the pair of sliding rods 3, 4 are exposed, thereby increasing the weight on both ends of the exercise rod. Therefore, it can be used as a substitute for a barbell or dumbbell and can be used for various training.

[0027] Furthermore, this weight 200 can be freely inserted and removed from the open ends of the pipes 30, 40 of the sliding rods 3, 4, so that it is possible to replace the weight 200 with one of a different weight, to set a difference in weight between the left and right sides, or to attach the weight 200 to only one end side, making it easier to adapt to a wider variety of exercises.

[0028] Fig. 3 shows an exercise rod 1C as a modification of the exercise rod 1A in Fig. 1. The locking means in this example is structured so that a shaft-like or protruding locking body is inserted across the outer locking holes 26, 26 and the inner locking holes 36, 46 to lock the sliding of the sliding rods 3B, 4B at a predetermined insertion depth where the positions of the outer locking holes 26, 26 arranged in a row on the same straight line at a predetermined interval in a predetermined range in the longitudinal direction of the outer circumferential surface of the pipe 20B of the main body 2B and the inner locking holes 36, 46 on the outer circumferential surface of one end of the pipe 30B, 40B of the sliding rods 3B, 4B inserted into the main body 2B coincide. The locked state can be released by a simple operation, and the length can be quickly changed and locked as desired.

[0029] Furthermore, as the locking body is a small part, in order to avoid it being lost, a protruding metal fitting will be provided inside one end of the pipes 30B, 40B and pressed outward by a spring member, and when inserted into the locking holes 36, 36 from the inside, it will elastically protrude outward, while communicating with the outer locking holes 26, 26 of the pipes 30B, 40B and being exposed to the outside, and the locking state will be released by pressing this protruding metal fitting from the outside to retract it.

[0030] Figure 4 shows an exploded view of an exercise rod 1D as an application of the exercise rod 1A in Figure 1. This example is characterized in that the opposing ends of the pair of sliding rods 3C, 4C are connected to each other by a string-like member 70 inside the main body 2, and even if the locking means is suddenly released during exercise such as a practice swing in which the exercise rod 1A is swung around, the pair of sliding rods 3C, 4C are connected and tethered by the string-like member 70, making it possible to avoid accidents caused by the sudden disconnection of the rods.

[0031] In this case, the string-like member 70 is assumed to be a string made of high-strength fiber or a wire made of steel wire from the viewpoint of ensuring tensile strength, but if one end is crimped to the hook fittings 37, 47 provided on one end of the sliding rods 3C, 4C as shown in the figure and the other end is connected with a snap hook 71 or the like, attachment and detachment will be easy. Also, it goes without saying that such an application method can be applied to all of the above-mentioned embodiments.

[0032] Figure 5 shows exercise rods 1E and 1F as other applications of the exercise rod 1A in Figure 1. In the exercise rod 1D described above, the opposing ends of a pair of sliding rods 3C and 4C are connected to each other by a string member 70, whereas the exercise rod 1E in Figure (A) is characterized in that the sliding rods 3C and 4C are connected inside the main body 2C by a compression coil spring 80 that has an elastic repulsive force in the compression direction, and the compression coil spring 80 exerts an elastic repulsive force against the action of shortening the length of the exercise rod 1E.

[0033] Another feature of this compression coil spring 80 is that its axial center portion is fixed at the axial center position inside the pipe 20C of the main body 2C. That is, a fixing metal fitting 81 fixed to the central portion of the compression coil spring 80 is fixed from the outside by screwing a screw 100 into a screw hole 81a portion of the fixing metal fitting 81 from the outside of the pipe 20C, making it impossible for the compression coil spring 80 to operate or move in the rotational and axial directions.

[0034] In this way, in this example, by configuring the pipes 30C, 40C of the sliding rods 3C, 4C to be connected by the compression coil spring 80, there is no need to worry about the sliding rods 3C, 3D coming off even if the locked state is suddenly released, and it can also be used for exercises that apply pressure in a direction to shorten the exercise rod 1E by utilizing the elastic repulsive force of the compression coil spring 80. Also, the rod length can be adjusted by compressing the compression coil spring 80 from a long state, and it can be locked at the insertion depth position using a tightening portion as a locking means.

[0035] On the other hand, the exercise rod 1F shown in Figure 5 (B) is also connected to the inside of pipe 20D of main body 2D by a compression coil spring 90 which has an elastic repulsive force in the compression direction, and which exerts an elastic repulsive force against the action of compressing the length of exercise rod 1F. The compression coil spring 90 is also fixed at its axial center by screw 100 through screw hole 91a of fixing bracket 91 at the center position of pipe 20D, in common with exercise rod 1E.

[0036] However, in this exercise rod 1F, the connection method of both ends of the compression coil spring 90 to the sliding rods 3D, 4D is such that both ends of the compression coil spring 90 are inserted through the openings of the pipes 30D, 40D, respectively, and the spiral structure of the compression coil spring 90 engages with columnar pins 39, 49 that are installed across the central axis on the inner part of the opening side, and this is the characteristic feature of this example.

[0037] In other words, the engagement described above serves as a locking means by locking the axial movement of the compression coil spring 90, and also makes it possible to change the insertion depth by rotating the sliding rods 3D, 4D. This not only makes it possible to use the exercise rod 1F for exercises that compress it, but also makes it possible to easily adjust the rod length by simply rotating the sliding rods 30D, 40D, while still allowing the sliding to be locked, even without using the locking means described above.

[0038] The operation of changing the length of the exercise rod 1F using the spiral structure of the compression coil spring 90 described above has the advantage of greatly reducing the time and effort required for changing the length, since the pitch per rotation is much larger than that of the screw rotation described in the above-mentioned Patent Document 2. Also, instead of providing the pins 39, 49 on the inside of the opening side of the sliding rods 30D, 40D, the peripheral wall of the opening may be recessed inward to form a mountain-shaped convex structure that can engage with the spiral structure of the compression coil spring 90.

[0039] As described above, the present invention enables the length of an exercise rod to be adjusted without excessive effort and time, making it easier to obtain the exercise effect. [Explanation of symbols]

[0040] 1A, 1B, 1C, 1D, 1E, 1F exercise rod, 2, 2B, 2C, 2D main body, 3, 3B, 3C, 3D, 4, 4B, 4C, 4D sliding rod, 20, 20B, 20C, 30, 30B, 30C, 30D, 40, 40B, 40C, 40D pipe, 21a, 21b, 31, 41 grip, 22a, 22b cap, 26 outer locking hole, 36, 46 inner locking hole, 39, 49 pin, 70 string-like member, 80, 90 compression coil spring, 81, 91 fixing bracket, 100 screw, 200 weight

Claims

1. an exercise rod comprising a main body made of a tubular member, and a pair of left and right sliding rods each made of a tubular member thinner than the main body, one end of which is inserted through a left or right open end of the main body while the other end is exposed to the outside, the overall length of the exercise rod being changed by changing the insertion depth of the sliding rods into the main body, the exercise rod being provided with a locking means for locking the sliding of the sliding rods while positioning the insertion depth of each of the sliding rods into the main body, the locking means being operated to adjust the length while sliding and locking each of the sliding rods, and the opposing ends of the pair of sliding rods being connected to each other by a predetermined string-like member inside the main body.

2. The exercise rod comprises a main body made of a tubular member, and a pair of left and right sliding rods each made of a tubular member thinner than the main body, each of which is provided so as to be slidable in the axial direction with one end inserted from the left and right open ends of the main body while the other end is exposed to the outside, and the total length is changed by changing the insertion depth of the sliding rods into the main body, and is provided with a locking means for locking the sliding while positioning the insertion depth of the sliding rods into the main body, and the length is adjusted while sliding and locking each sliding rod by operating the locking means, and the opposing one ends of the pair of sliding rods are connected to each other by a compression coil spring having an elastic repulsive force in the compression direction inside the main body. an exercise rod connected to the sliding rod by a screw, the compression coil spring exerting an elastic repulsive force against any action to shorten the length of the exercise rod, the compression coil spring having its longitudinal center fixed to the main body at the longitudinal center position inside the main body to prevent movement in the rotational and axial directions, and both ends of the compression coil spring are inserted into an opening of the sliding rod and the spiral structure of the compression coil spring engages with a convex structure or columnar body provided on the inside of the opening side, the engagement locking the axial movement of the compression coil spring while allowing the insertion depth to be changed by rotating the sliding rod.

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