Slide device and exercise tool using the same

Abstract

The object of the present invention is to provide a sliding device that allows for fine adjustment of the clamping strength of the rollers clamping the track member, and a sports apparatus equipped with the device. The sliding device of the present invention, as a solution, is used in the movable mechanism of a sports apparatus; the sliding device comprises: an elongated track member; and two or more guide rollers that clamp the sides of the track member from two directions; the guide rollers slide freely along the track member; at least one of the guide rollers is a first guide roller whose clamping strength is adjustable; the first guide roller is equipped with an eccentric mechanism; the position of the first guide roller relative to the track member can be adjusted by the eccentric mechanism.

Description

Technical Field

[0001] This invention relates to a sliding device and a sports apparatus using the device. Prior Technology

[0002] Until now, sliding devices provided on the movable part of a sports device that slide along the extension direction on a track member are known. As for sliding devices, for example, there are known configurations that use rollers to clamp the sides of the track member from both sides (for example, Patent Documents 1 and 2 below). (Previous technical documents) (Patent Documents)

[0003] Patent Document 1: Japanese Patent Publication No. 7158545 Patent Document 2: Japanese Utility Model Publication No. 3168541 Summary of the Invention

[0004] (The problem that the invention aims to solve) The sliding mechanism of sports equipment requires stable and smooth sliding motion. If the sliding mechanism is unstable, the sports equipment will be unpleasant to use, and training results may be poor. In addition, if the sliding mechanism is unstable, there may be abnormalities in parts such as the bearings of the rollers, thus increasing the maintenance burden.

[0005] On the other hand, in sports equipment, due to factors such as dimensional errors in parts or the installation environment, the clamping strength of the rollers clamping the track components may not reach the expected strength. In this case, the sliding action of the sliding device may become unstable. Therefore, it is considered preferable for sports equipment to have a mechanism that allows for fine-tuning of the clamping strength of the rollers clamping the track components after installation.

[0006] However, previous sliding devices did not have this adjustment mechanism, which made it difficult to achieve stable and smooth sliding movements.

[0007] The present invention was developed in view of the above circumstances, and aims to provide a sliding device that can finely adjust the clamping strength of the roller clamping the track component, and a motion device having the device. (Methods for solving the problem)

[0008] The sliding device of the present invention was developed to solve the above-mentioned technical problems, and it includes the following features.

[0009] In the first embodiment of the present invention, the sliding device is used in the movable mechanism of a sports equipment; The sliding device has the following features: Long, narrow track components; and Two or more guide rollers clamp the sides of the aforementioned track component from two directions; The aforementioned guide roller system slides freely along the aforementioned track components; At least one of the aforementioned guide rollers is a first guide roller whose strength in clamping the aforementioned track member can be adjusted; The aforementioned first guide roller system has an eccentric mechanism; The position of the first guide roller relative to the track component can be adjusted by the aforementioned eccentric mechanism. The second preferred embodiment is the sliding device of the first embodiment described above, wherein the first guide roller system includes a pin member disposed at the center of the rotating shaft as the aforementioned eccentric mechanism; The aforementioned pin component has an eccentrically rotating portion whose center of rotation is offset relative to the central axis of the pin; The position of the first guide roller relative to the track member can be adjusted by rotating the aforementioned eccentric rotating part. The third preferred embodiment is that, in the sliding device of the second embodiment described above, the aforementioned pin member is equipped with a bolt; The aforementioned eccentric rotating part includes a cylindrical bearing fitting part; The aforementioned bearing fitting part is located eccentrically relative to the center of the cylinder, and has a first insertion hole extending along the axial direction of the cylinder; The aforementioned bolt is inserted through the aforementioned first insertion hole. The fourth embodiment is preferably a sliding device in the second or third embodiment described above, wherein the eccentric rotating part includes an adjusting part integrally formed with the bearing fitting part; The aforementioned adjustment part is provided with a second insertion hole that communicates with the aforementioned first insertion hole; The aforementioned bolts are inserted through the aforementioned first insertion hole and the aforementioned second insertion hole. The fifth embodiment preferably includes a base plate disposed along the aforementioned track member in the sliding device of the second embodiment; One end of the aforementioned pin component is fixed to the aforementioned substrate. The sixth embodiment is preferably a sliding device in which a second guide roller, rotating on a concentric axis, is provided on the opposite side of the first guide roller, separated from the aforementioned track member. The seventh configuration preferably includes two of the aforementioned second guide rollers in the sliding device of the sixth configuration. The aforementioned first guide roller is located on the opposite side of the aforementioned track member, corresponding to the central position between the aforementioned second guide rollers. The eighth configuration preferably incorporates two of the aforementioned second guide rollers in the sliding device of the sixth configuration. The aforementioned first guide roller is located on the opposite side of the aforementioned track member at a position corresponding to and close to each of the aforementioned second guide rollers. In the ninth embodiment of the present invention, the sports equipment includes a sliding device as described in the first to eighth embodiments above. (The benefits of the invention)

[0010] The sliding device of this invention allows for fine-tuning of the clamping strength of the rollers against the track components. Because the sliding action of the sliding device is stable and smooth, the exercise equipment of this invention provides excellent user experience and achieves the desired training effect. Furthermore, the exercise equipment of this invention also reduces the burden of maintenance. Simple Explanation of the Diagram

[0011] Figure 1 is a schematic front view of the sliding device according to a first embodiment of the present invention. Figure 2 is a schematic diagram of the sliding device viewed from the direction of arrow A shown in Figure 1. Figure 3 is a cross-sectional view of the first guide roller of the sliding device viewed from the direction of arrow BB shown in Figure 1. Figure 4 is a cross-sectional view of the second guide roller of the sliding device viewed from the direction of arrow CC shown in Figure 1. Figure 5 is an explanatory diagram showing the adjustment state of the eccentric mechanism of the first guide roller used in the sliding device of the present invention. Figure 6 is a schematic front view of the sliding device according to a second embodiment of the present invention. Figure 7 is a schematic diagram of a sports apparatus using the sliding device of the first embodiment. Figure 8 is a schematic diagram of a sports apparatus using a sliding device of the second embodiment. In Figure 9, (A) is a perspective view illustrating one state of the eccentric rotating part, and (B) is a front view viewed from the bearing engagement part side of the eccentric rotating part. Implementation

[0012] The sliding device of the present invention is a sliding device used in the movable mechanism of a sports equipment, and examples of the first and second embodiments are shown below.

[0013] <One Form of the First Implementation> Hereinafter, a first embodiment of the sliding device of the present invention will be described in detail with reference to the drawings. FIG1 is a schematic front view showing the sliding device of the first embodiment of the present invention. FIG2 is a schematic view viewed from the direction of arrow A in FIG1. ​​FIG3 is a cross-sectional view between arrows BB of the first guide roller in FIG1. ​​FIG4 is a cross-sectional view between arrows CC of the second guide roller in FIG1.

[0014] The sliding device 1 includes a track component 2, a base plate 3, and guide rollers.

[0015] Track component 2 is a long, cylindrical shape with a circular cross-section. In this embodiment, track component 2 is horizontally positioned.

[0016] The substrate 3 is flat and is arranged along the track component 2.

[0017] The guide roller system includes a first guide roller 5 and a second guide roller 6. A first guide roller 5 is disposed on the lower side of the substrate 3, and two second guide rollers 6 are disposed on the upper side of the substrate 3 opposite to the track member 2. Furthermore, the first guide roller 5 is positioned at the center between the two second guide rollers 6.

[0018] The first guide roller 5 can adjust the strength of clamping the track member 2. The first guide roller 5 is equipped with an eccentric mechanism, by which the position of the first guide roller 5 relative to the track member 2 can be adjusted. Here, the so-called "eccentric mechanism" refers to a mechanism that includes a part in which the rotation center 550 is offset relative to the central axis 510 of the first guide roller 5.

[0019] More specifically, the first guide roller 5 includes a bearing 41 (e.g., a so-called bearing) mounted on the pin member 52 and a roller portion 4 located on the outer periphery of the bearing 41. Furthermore, the first guide roller 5 uses the pin member 52 located at the center of the rotation axis as an eccentric mechanism.

[0020] The outer peripheral surface of the roller part 4 is formed with a V-shaped groove 42, which abuts against the surface of the cylindrical track member 2. The sliding device 1 slides on the track member 2 by rotating the roller part 4 with a bearing 41.

[0021] The pin component 52 has a bolt 51 and a rotation center 550 that is offset relative to the central axis 510 of the pin (bolt 51) and an eccentric rotating part 53. Figure 9 shows a perspective view and a front view of one state of the eccentric rotating part 53.

[0022] The eccentric rotating part 53 includes a bearing fitting part 54 and an adjusting part 55. The bearing fitting part 54 is cylindrical and has a first insertion hole 541 with a circular cross-section extending along the axial direction of the cylinder. The bearing 41 (e.g., a so-called bearing) is fitted onto the outer circumferential surface of the cylinder constituting the bearing fitting part 54. Furthermore, the first insertion hole 541 (i.e., the central shaft 510 of the pin (bolt 51)) is positioned eccentrically relative to the rotation center 550 of the cylinder of the bearing fitting part 54.

[0023] The adjusting part 55 is integrally formed with the bearing fitting part 54. The adjusting part 55 extends outward from one end of the bearing fitting part 54. There is no particular limitation on the shape of the adjusting part 55, but in this embodiment, the adjusting part 55 is formed into a hexagonal prism shape. The adjusting part 55 has a second insertion hole 551 with a circular cross-section that is coaxial with and communicates with the first insertion hole 541 of the bearing fitting part 54. In this embodiment, the second insertion hole 551 of the adjusting part 55 is also formed at an off-center position relative to the center of the regular hexagon of the cross-section of the adjusting part 55.

[0024] In the eccentric rotating part 53, the first insertion hole 541 and the second insertion hole 551 are inserted through the bolt 51. The eccentric rotating part 53 (bearing fitting part 54 and adjusting part 55) can rotate freely with the bolt 51 inserted.

[0025] The eccentric rotating part 53 is clamped and fixed by the base plate 3 and the bolt head 511 by the tightening of the bolt 51 and the nut 512. The position of the first guide roller 5 relative to the track member 2 is adjusted (in other words, the strength of clamping the track member 2 is adjusted), for example, by rotating the bolt head 511. With the bolt 51 slightly loosened, the eccentric rotating part 53 (adjusting part 55) rotates in the circumferential direction. After determining the adjustment position of the first guide roller 5, the bolt 51 is tightened to fix the eccentric rotating part 53 in the desired rotation position.

[0026] Furthermore, a portion of the outer surface of the adjustment portion 55 located on the substrate 3 side is exposed in the space 56 between the substrate 3 and the roller portion 4. Therefore, for example, when a predetermined tool is inserted into the space 56 between the substrate 3 and the roller portion 4 and the adjustment portion 55 is held, the adjustment portion 55 and the bearing fitting portion 54 can be rotated to achieve the desired amount of rotation.

[0027] In the sliding device 1 of this embodiment, the first insertion hole 541 is located at a position offset from the center of the cylinder of the bearing fitting portion 54 of the fitting bearing 41 (Figs. 3 and 9). Furthermore, the bolt 51 is inserted through both the first insertion hole 541 and the second insertion hole 551 and fixed to the base plate 3. Therefore, the sliding device 1 can finely adjust the position of the roller portion 4 (the clamping strength of the track member 2) via the eccentrically rotating bearing fitting portion 54 by rotating the adjusting portion 55 integrally formed with the bearing fitting portion 54. That is, in this embodiment, the so-called "eccentric rotation" refers to the misalignment between the central axis of the cylinder (rotation center 550) of the bearing fitting portion 54 and the central axis 510 of the pin (the center of the first insertion hole 541). By rotating the adjusting portion 55 around the bolt 51 in this state, the bearing fitting portion 54 undergoes a change in the radial distance of the cylinder. By rotating eccentrically, the position of the guide roller 5 supported by the bearing 41 can be changed to be closer to the track member 2 or further away from the track member 2, thereby adjusting the clamping strength.

[0028] Figure 5 is a schematic diagram illustrating one type of position adjustment by means of the eccentric mechanism of the first guide roller 5.

[0029] When the adjustment part 55 of the first guide roller 5 in Figure 5(a) is rotated 90° in the direction of arrow I (clockwise), it becomes the state shown in Figure 5(b). Next, from the state shown in Figure 5(b), the adjustment part 55 is further rotated 90° in the direction of arrow II (clockwise), resulting in the state shown in Figure 5(c).

[0030] In the state shown in Figure 5(a), the first insertion hole 541 (the central axis 510 of the pin) of the bearing fitting part 54 is positioned at the upper side of the figure relative to the rotation center 550 of the cylinder. The entire bearing 41 is positioned at the lower side of the figure relative to the states shown in Figures 5(b) and (c). Therefore, when the adjusting part 55 and the bearing fitting part 54 are rotated 90° about the rotation center 550 of the cylinder from the state shown in Figure 5(a), the state shown in Figure 5(b) is obtained. Since the position of the first insertion hole 541 (the position of the central axis 510 of the pin) is not the same as the rotation center 550 of the cylinder, the radial distance of the bearing fitting part 54 changes in the state shown in Figure 5(b). Next, when the adjusting part 55 and the bearing fitting part 54 are further rotated 90° about the rotation center 550 of the cylinder from the state shown in Figure 5(b), the state shown in Figure 5(c) is obtained. In the state shown in Figure 5(c), the first insertion hole 541 (center axis 510 of the pin) of the bearing fitting part 54 is positioned on the lower side of the figure relative to the rotation center 550 of the cylinder. At this time, the entire bearing 41 is moved to a position on the upper side of the figure relative to Figure 5(a) and (b). That is, the position adjustment of the first guide roller 5 can be adjusted within the range of Figure 5(a) to (c).

[0031] Figure 4 is a cross-sectional view between the arrows C and C of the second guide roller 6 of the sliding device 1 shown in Figure 1.

[0032] The second guide roller 6 is a guide roller that rotates around a concentric axis. Specifically, the second guide roller 6, except for the eccentric mechanism, can have the same configuration as the first guide roller 5. Therefore, the description of the components common to the first guide roller 5 is omitted. The second guide roller 6 may include a bolt 61, a fixing member 63 to be screwed into the bolt 61, and a bearing fitting portion 64 integrally formed with the fixing member 63. It can be fixed to the base plate 3 by the clamping of the nut 62 screwed into the bolt 61 and the fixing member 63. With the bearing 41 fitted into the bearing fitting portion 64, the roller portion 4 rotates with the bearing 41.

[0033] In the sliding device 1 of this embodiment, a second guide roller 6, rotating around a concentric axis, is provided on the opposite side of the first guide roller 5, separated by the track member 2. Since the position of the roller portion 4 of the second guide roller 6 is fixed, its position can be stably adjusted by the eccentric mechanism of the first guide roller 5.

[0034] In the sliding device 1 of this embodiment, two second guide rollers 6 are provided, and the first guide roller 5 is located on the opposite side corresponding to the central position between the two second guide rollers 6. Since the first guide roller 5 is located at the central position between the two second guide rollers 6, its position can be stably adjusted by means of the eccentric mechanism of the first guide roller 5.

[0035] Figure 6 is a schematic front view showing the sliding device 1 of the second embodiment of the present invention. The following description omits the content common to the first embodiment.

[0036] In the sliding device 1 of this embodiment, the first guide roller 5 and the second guide roller 6 are arranged such that the first guide roller 5 is positioned on the opposite side of the position corresponding to the two second guide rollers 6 provided, and close to either of the two second guide rollers 6.

[0037] In the second embodiment, two second guide rollers 6 are arranged vertically, and a first guide roller 5 is provided on the opposite side of the second guide rollers 6 to clamp the long track member 2 arranged in the vertical direction. The first guide roller 5 is positioned between the two second guide rollers 6 arranged vertically and close to the upper second guide roller 6.

[0038] The sliding device 1 in the second embodiment is a mechanism that moves the substrate 3 downward along arrow b relative to the load above arrow a. According to this sliding device 1, along with the load that moves the substrate 3 downward along arrow b, the lower second guide roller 6 applies a force in the direction of arrow c to the track member 2, and the opposing first guide roller 5 applies a force in the direction of arrow d to the track member 2.

[0039] In this second embodiment of the sliding device 1, the distance between the lower second guide roller 6 and the first guide roller 5 is greater than the distance between the upper second guide roller 6 and the first guide roller 5. Therefore, according to the lever principle, when the first guide roller 5 is used as the fulcrum, the lower second guide roller 6 bears a smaller load (arrow c). As a result, the load on the bearing 41 of the lower second guide roller 6 is also reduced, thus reducing the noise caused by movement during training and extending the life of the bearing 41 of the roller part 4.

[0040] The sliding device 1 of the present invention has been described above according to the embodiments, but the present invention is not limited to the above embodiments. Various modifications can be made without departing from the spirit of the present invention.

[0041] For example, the shapes of track components 2 and roller parts 4 are not particularly limited and can be designed appropriately.

[0042] Furthermore, the above embodiment is described using a sliding device consisting of two second guide rollers 6 and one first guide roller 5, but it is not limited to this. It may also be configured to use one or more second guide rollers 6, or two or more first guide rollers 5. In addition, it may be configured so that all guide rollers are first guide rollers 5.

[0043] <Implementation Modes of Sports Equipment> The sliding device of the present invention can be applied to the movable mechanisms of various sports equipment.

[0044] Figures 7 and 8 are external views illustrating embodiments of the sports equipment of the present invention.

[0045] For example, the exercise equipment 7 illustrated in Figure 7 is a training device for the lower body that applies the sliding device 1 of the first embodiment described above. The user sits on the seat 71 of this exercise equipment 7 and presses their feet against the pedal 72 connected to the sliding device 1 of the first embodiment of the present invention, thus bending and straightening their legs for training. At this time, the eccentric mechanism of the first guide roller 5 of the sliding device 1 finely adjusts the clamping strength (position of the first guide roller 5) of the first guide roller 5 and the second guide roller 6 clamping the track member 2, thereby making the sliding action of the sliding device 1 stable and smooth. Therefore, the exercise equipment 7 provides a good user experience and achieves the desired training effect. Furthermore, the exercise equipment of the present invention can suppress the malfunction of parts, thus reducing the burden of maintenance such as parts replacement.

[0046] Furthermore, the exercise equipment 8 illustrated in Figure 8 is a training device for the upper body that applies the sliding device 1 of the second embodiment described above. The user sits on the seat 81 of this exercise equipment 8, holding the handle (grip) 82 connected to the sliding device 1, and performs training by bending and straightening their elbows in this position. At this time, the eccentric mechanism of the first guide roller 5 of the sliding device 1 finely adjusts the clamping strength (position of the first guide roller 5) of the first guide roller 5 and the second guide roller 6 clamping the track member 2, thereby making the sliding action of the sliding device 1 stable and smooth. Therefore, the exercise equipment 8 provides a good user experience and achieves the desired training effect. In addition, the exercise equipment of the present invention can suppress the malfunction of parts, thus reducing the burden of maintenance such as parts replacement.

[0047] The sports equipment of the present invention has been described above according to the embodiments, but the present invention is not limited to the above embodiments.

[0048] (variant examples, etc.) The sports equipment of the present invention may also include the following embodiments. The sliding device of the present invention can also be applied to movable parts in sports equipment used to move a counterweight mechanism up and down. That is, the track component can be a track with a horizontal, vertical, oblique, or curved orientation. The number of the first guide roller and the second guide roller can be one or more. Examples of materials for track components include metals (iron, aluminum alloys, stainless steel), resins, and composite materials. Examples of materials for guide rollers include resins, metals, and rubber. The bearing 41 can be a component that supports the roller part 4 in a rotatable manner; for example, it can include conventional sliding bearings, needle roller bearings, journal bearings, etc. The bearing fitting part 54 can be in a shape other than cylindrical, for example, it can be hexagonal prism, square prism, or other polygonal prism.

[0049] 1: Sliding device 2: Track components 3:Substrate 4: Roller section 5: First guide roller 6: Second guide roller 7: Exercise equipment (lower body training equipment) 8: Exercise equipment (equipment for upper body training) 41: Bearing 42: Ditch 51: Bolt 52: Pin component 53: Eccentric Rotating Part 54: Bearing mating part 55: Adjustment Department 56: Space 61: Bolt 62: Nut 63: Fixed components 64: Bearing mating part 71: Seating Section 72: Pedal section 81: Seating Section 82: Handle (grip) 510: Central axis 511: Bolt head 512: Nut 541: First insertion hole 550: Center of Rotation 551: Second insertion hole A, B, C, a, b, c, d, I, II: Arrows

Claims

1. A sliding device, a movable mechanism for use in sports equipment; the sliding device comprising: an elongated track member; and two or more guide rollers clamping the sides of the track member from two directions; the guide rollers sliding freely along the track member; at least one of the guide rollers being a first guide roller whose clamping strength on the track member is adjustable; the first guide roller having an eccentric mechanism; the position of the first guide roller relative to the track member being adjustable by the eccentric mechanism.

2. The sliding device as described in claim 1, wherein, The aforementioned first guide roller system includes a pin member located at the center of the rotating shaft as the aforementioned eccentric mechanism; the aforementioned pin member has an eccentric rotating portion whose rotation center is offset relative to the central axis of the pin; the position of the aforementioned first guide roller relative to the aforementioned track member can be adjusted by rotating the aforementioned eccentric rotating portion.

3. The sliding device as described in claim 2, wherein, The aforementioned pin component is equipped with a bolt; the aforementioned eccentric rotating part includes a cylindrical bearing fitting part; the aforementioned bearing fitting part is provided with a first insertion hole that extends along the axial direction of the cylinder at an eccentric position relative to the center of the cylinder; the aforementioned bolt is inserted through the aforementioned first insertion hole.

4. The sliding device as described in claim 3, wherein, The aforementioned eccentric rotating part includes an adjusting part integrally formed with the aforementioned bearing fitting part; the aforementioned adjusting part has a second insertion hole communicating with the aforementioned first insertion hole; the aforementioned bolt is inserted through the aforementioned first insertion hole and the aforementioned second insertion hole.

5. The sliding device as claimed in claim 2, comprising a base plate disposed along the aforementioned track member; one end of the aforementioned pin member is fixed to the aforementioned base plate.

6. The sliding device as described in claim 1, wherein, On the opposite side of the aforementioned first guide roller, separated from the aforementioned track component, there is a second guide roller that rotates around a concentric axis.

7. The sliding device as described in claim 6, wherein two of the aforementioned second guide rollers are provided; the aforementioned first guide roller is located on the opposite side of the aforementioned track member corresponding to the central position between the aforementioned second guide rollers.

8. The sliding device as described in claim 6, wherein two of the aforementioned second guide rollers are provided; the aforementioned first guide roller is disposed on the opposite side of the aforementioned track member at a position corresponding to and close to either of the aforementioned second guide rollers.

9. A sports apparatus comprising a sliding device as described in claim 1.

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