Arm wrestling device
Patent Information
- Application Number
- JP2025029765
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2045-02-27
Smart Images
Figure 2026142662000001_ABST
Abstract
Description
[[Technical Field]]
[0001] The present invention relates to an arm wrestling competition device that enables arm wrestling between different left and right arms of two competitors. [[Background Art]]
[0002] Among many sports, arm wrestling is played by people of a wide range of age groups because it can be carried out regardless of devices or locations. In arm wrestling, two competitors face each other on a parallel platform and place their elbows on the platform. In this position, they grip each other's hands, and a competitor wins if they force the back of the opponent's hand onto the platform. Various tournaments are held owing to the advantage that arm wrestling allows competitors to test their strength in a very simple and safe manner.
[0003] However, due to the characteristics of arm wrestling, competitions between a left arm and a right arm cannot be carried out. When a left hand grips a right hand, the backs of both hands face the same direction, so the rule of forcing the opponent's back of hand onto the ground does not hold. If the opponent uses a right arm, this competitor must also use a right arm; similarly, if the opponent uses a left arm, this competitor must also use a left arm.
[0004] In sports, the inability of competitors with different dominant arms to compete against each other is a major drawback. As an example from other sports, tennis allows competitors with different dominant arms to compete against each other without any problems. There is no such restriction even in the field of martial arts, and competitors can fully demonstrate their own potential. However, arm wrestling has this problem.
[0005] As an improvement measure, competitions are currently divided into a right arm category and a left arm category. However, this method does not provide a fundamental solution because competitors have to adapt their dominant arm to the category. [[Prior Art Literature]] [[Patent Literature]]
[0006] [[Patent Literature 1]] Japanese Unexamined Patent Publication No. 2000-189665 [[Summary of the Invention]] [[Problem to be Solved by the Invention]]
[0007] The problem we are trying to solve is that, in face-to-face matches, only players with the same dominant arm can compete, meaning that players with different dominant hands cannot compete against each other. [Means for solving the problem]
[0008] The arm wrestling device relating to the first aspect is an arm wrestling device for a first player and a second player to compete in arm wrestling, comprising: a housing; a first arm rotatably mounted on one side of the housing for operation by the first player; a second arm rotatably mounted on the opposite side of the housing for operation by the second player; a first shaft which serves as a first axis of rotation for tilting the first arm left and right relative to the housing; a second shaft which serves as a second axis of rotation for tilting the second arm left and right relative to the housing and is mounted in line with the first shaft; a first gear fixed to the tip of the first shaft; a second gear fixed to the tip of the second shaft; and an intermediate gear meshed between the first gear and the second gear, wherein the first gear, second gear and intermediate gear are bevel gears, and the force that tilts the first arm left and right is transmitted to the first gear by the first shaft, and the direction of the force is reversed by meshing with the second gear via the intermediate gear meshed with the first gear, and the reversed force is transmitted to the second arm. This allows the rotation of the first arm to be transmitted to the second arm in the opposite direction, enabling arm wrestling matches between players with different dominant hands.
[0009] The arm wrestling device relating to the second side further includes, in the above-mentioned side, a first grip for the first player to grasp, which is attached to the tip of the first arm so as to slide in an inclined position relative to the first arm, and a second grip for the second player to grasp, which is attached to the tip of the second arm so as to slide in an inclined position relative to the second arm. This solves the problem that the height of the first grip held by the first player differs depending on the rotation position of the first arm, by making it possible to move the mounting position of the first grip along the first arm. In other words, since the height of the first grip can be moved up and down, when the first arm is rotated, the first player can slide the first grip to the right height according to the rotation angle while still holding it, making it easier to knock down the arm while still holding it, regardless of the angle of the first arm. The same applies to the second arm.
[0010] The arm wrestling device relating to the third aspect further comprises, in any of the above aspects, a first ring, which is an annular ring provided around the first shaft and does not rotate even when the first shaft is rotated; a second ring, which is an annular ring provided around the second shaft and does not rotate even when the second shaft is rotated; a horizontal slide mechanism that connects the first ring and the second ring so that they can move in conjunction horizontally with respect to the housing; a first tilting mechanism that connects the first arm to the rear end of the first shaft so that it can tilt towards or away from the housing about a first tilting axis perpendicular to the first rotation axis; a first transmission mechanism that transmits the movement of tilting the first arm relative to the housing about the first tilting axis as a horizontal movement of the first ring moving back and forth from the housing along the slide mechanism; and the rear end of the second shaft The device includes a second tilting mechanism that connects the second arm to the housing so that it can tilt freely towards or away from the housing around a second tilting axis perpendicular to the second rotation axis, and a second transmission mechanism that transmits the tilting motion of the second arm relative to the housing around the second tilting axis as a horizontal movement of the second ring moving back and forth along a sliding mechanism from the second arm to the second ring. The device is configured such that the first player's tilting motion of the first arm towards themselves around the first tilting axis is converted into a horizontal movement of the first ring towards themselves via the first transmission mechanism, the horizontal movement of the first ring is transmitted as a horizontal movement of the second ring via a horizontal sliding mechanism, and the horizontal movement of the second ring is converted into a tilting motion of the second arm away from the second player via the second transmission mechanism. This allows the pulling motion of the first arm to be transmitted to the second arm, enabling the pulling motion that is the strategy involved in arm wrestling.
[0011] The arm wrestling device relating to the fourth aspect comprises, in any of the above aspects, a first transmission mechanism comprising a first arm joint whose rear end is rotatably connected to a first arm, and a first pin whose rear end is rotatably connected to the tip of the first arm joint, with a first flange provided at the tip of the first pin, the first pin being positioned along the inside of the ring of the first ring, a part of the first flange hooking onto the back side of the ring of the first ring, the first flange hooking onto the inside of the ring of the first ring, and when the first arm is tilted in a direction that pulls it towards the first player, the first ring hooked onto the first flange is moved horizontally in a direction that pulls it towards the first player, and when the first arm is rotated around the first rotation axis, the first flange of the first pin The second transmission mechanism is configured to move along the inside of the ring's annulus, and includes a second arm joint whose rear end is rotatably connected to the second arm, and a second pin whose rear end is rotatably connected to the tip of the second arm joint, with a second flange at the tip of the second pin. The second pin is positioned along the inside of the second ring's annulus, and a part of the second flange is hooked to the back side of the second ring's annulus. When the second arm is tilted in the direction of pulling towards the second player, the second ring hooked to the second flange moves horizontally in the direction of being pulled towards the second player, and when the second arm is rotated around the second rotation axis, the second flange of the second pin moves along the inside of the second ring's annulus. This allows the rotational movement of the first and second arms to be separated from the tilting around the tilting axis perpendicular to the rotation axis, thus avoiding excessive load on the rotation axis that could cause it to twist and break, while enabling the arm-pulling motion, an important technique in arm wrestling, to be implemented in the arm wrestling device.
[0012] The arm wrestling device relating to the fifth aspect further comprises, in any of the above aspects, a first rotating bearing fixed to the rear end of the first shaft and having a first slit of a certain length along the arc direction of the first rotating axis; a second rotating bearing fixed to the rear end of the second shaft and having a second slit of a certain length along the arc direction of the second rotating axis; a first clutch through which the first shaft is inserted and which is rotatably supported around the first shaft; a second clutch through which the second shaft is inserted and which is rotatably supported around the second shaft; a first weight connected to the first clutch; and a second weight connected to the second clutch, wherein the first clutch has a first projection inserted into the first slit, and the second clutch The latch is equipped with a second projection that is inserted into a second slit. When the first arm is rotated beyond a certain angle around the first axis of rotation, the edge of the first slit of the first rotation bearing fixed to the first shaft strikes the first projection, causing the first clutch to rotate. The weight of the first weight connected to the first clutch acts as a counterweight, acting to oppose the rotation of the first arm. When the second arm is rotated beyond a certain angle around the second axis of rotation, the edge of the second slit of the second rotation bearing fixed to the second shaft strikes the second projection, causing the second clutch to rotate. The weight of the second weight connected to the second clutch acts as a counterweight, acting to oppose the rotation of the second arm. This configuration reduces the effect of the weights of the first and second arms acting in a favorable direction when the first player rotates the first arm to gain an advantageous position, thus creating a fair playing environment. The same effect applies to the second player.
[0013] The arm wrestling device relating to the sixth aspect is configured such that, in any of the above aspects, when the first arm is not rotated by more than a certain angle around the first rotation axis, the edge of the first slit of the first rotation bearing fixed to the first shaft does not come into contact with the first projection, and the first clutch is not connected to the rotation of the first rotation bearing; and when the second arm is not rotated by more than a certain angle around the second rotation axis, the edge of the second slit of the second rotation bearing fixed to the second shaft does not come into contact with the second projection, and the second clutch is not connected to the rotation of the second rotation bearing. This prevents a situation where a disadvantaged player becomes even more disadvantaged by activating the counterweight function.
[0014] The arm wrestling device relating to the seventh aspect has, on any of the above aspects, the first clutch connected to the first weight by a wire, the second clutch connected to the second weight by a wire, the housing has holes for passing each wire through, and the first and second weights can each be fitted with or replaced with weights of different weights. This makes it possible to adjust the weight of the first and second weights, thereby adjusting the advantage or disadvantage and handicap between players.
[0015] The arm wrestling device relating to the eighth aspect further includes a digital scale attached to a wire on any of the above aspects. This allows the strength of the players to be measured with the digital scale, and the strength can be displayed numerically as needed, thereby enhancing the enjoyment of the competition. [Brief explanation of the drawing]
[0016] [Figure 1] Figure 1 is a side view showing an arm wrestling competition device according to one embodiment. [Figure 2] Figure 2 is a perspective view with an enlarged view showing the main parts of the first arm in Figure 1. [Figure 3] Figure 3 is a perspective view and a front view showing the first rotating bearing in Figure 2. [Figure 4]Fig. 4 is a perspective view showing the portion from the first arm to the first gear in Fig. 3 viewed from the back side. [Figure 5] Fig. 5 is a perspective view showing a counterweight of an arm wrestling competition device. [Figure 6] Fig. 6 is a perspective view and a side view showing a state where the first gear, the intermediate gear and the second gear in Fig. 1 are meshed with each other. [Figure 7] Fig. 7 is a perspective view, a front view and a side view showing the first grip in Fig. 1. [Figure 8] Fig. 8 is a perspective view, a front view and a side view showing the first arm in Fig. 1. [Figure 9] Fig. 9 is a perspective view, a front view and a side view showing the first pin in Fig. 4. [Figure 10] Fig. 10 is a side view showing a state where the first arm in Fig. 1 is pulled toward the left side. [Figure 11] Fig. 11 is a side view showing a state where the second arm in Fig. 1 is pulled toward the right side. MODE FOR CARRYING OUT THE INVENTION
[0017] Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings. The present invention is not limited to the following embodiments and examples, and the following are merely examples of the present invention.
[0018] An object of the present invention is to reduce discomfort felt by each player caused by the interposition of the machine when a first player and a second player compete against each other using the arm wrestling competition device. The present invention also achieves reproduction of more realistic movements, downsizing of the housing, and provision of strength that withstands practical use.
[0019] In the following description, an example will be described in which a right-handed first player and a left-handed second player compete against each other in arm wrestling using the arm wrestling competition device. Even when the first player is left-handed and the second player is right-handed, the present invention can be similarly used by appropriately changing the configuration of the present invention.
[0020] Figure 1 shows a side view of an arm wrestling competition device according to an embodiment of this invention. The arm wrestling competition device shown in this figure comprises a housing 30, a first arm 2, a second arm 8, a first shaft 14, a second shaft 24, a first gear 4, a second gear 6, and an intermediate gear 5.
[0021] The housing 30 is formed in a box shape, as shown in Figures 1, 2, and 5. A first arm 2 is provided on the front 31 of the box shape, and a second arm 8 is provided on the opposite rear 32. The housing 30 is preferably made of a metal with sufficient strength, such as stainless steel, iron, or aluminum. The top and sides may also be made of transparent resin as needed to allow the interior to be seen. (First Arm 2)
[0022] The first arm 2 is a component operated by the first player. This first arm 2 is rotatably mounted on the front surface 31 of the housing 30. (First grip 1)
[0023] The tip of the first arm 2 is equipped with a first grip 1 for the first player to grasp. The first grip 1 is mounted so that it can slide in an inclined position relative to the first arm 2. This allows the first player to grasp the first grip 1 at an appropriate position according to the length of their arm and operate the first arm 2. Furthermore, the problem of the height of the first grip 1 held by the first player varying depending on the rotation position of the first arm 2 is solved by making the mounting position of the first grip 1 movable along the first arm 2. In other words, since the height of the first grip 1 can be moved up and down, when the first arm 2 is rotated, the first player can slide the first grip 1 to the appropriate height according to the rotation angle while still holding it, making it easier to knock over the arm 2 while maintaining a grip, regardless of the angle of the first arm 2.
[0024] The first grip 1 shown in Figure 2 is not fixed to the first arm 2 with a bolt; rather, the bolt slides, allowing for free vertical movement. This allows for adjustment according to the length of the first player's arm. In the example shown in Figure 7, the first grip 1 is cylindrical overall, with a flat plate 1a at its lower end, and two holes drilled in the flat plate 1a. On the other hand, as shown in Figure 8, the first arm 2 is cylindrical overall, with a groove 2a opening at its upper end. Slits 2b are also opened in the pair of side walls that make up the groove 2a. The first grip 1 is slidably attached to the first arm 2 by inserting the flat plate 1a at the lower end of the first grip 1 into the groove 2a at the upper end of the first arm 2 and screwing a bolt into the screw hole through the slit 2b. The angle at which the first grip 1 is fixed to the first arm 2 is determined by the positions of the two holes. In the example shown in Figure 1, it is tilted at approximately 45 degrees from the horizontal plane. Lightweighting is achieved by using aluminum for the material of the first grip 1 and the first arm 2. (Second arm 8)
[0025] The second arm 8 is a component operated by the second player. This second arm 8 is rotatably mounted on the back surface 32 of the casing 30. A second grip 9 for the second player to grasp is provided at the tip of the second arm 8. The second grip 9 is also mounted so that it can slide in an inclined position relative to the second arm 8. Similar to the first arm 2, the position of the second grip 9 can be adjusted to an appropriate position according to the length of the second player's arm. Also, similar to the first arm 2, the second arm 8 can accommodate changes in height due to the rotation angle.
[0026] In the example shown in Figure 1, the distance between the center of the first grip 1 and the center of the second grip 9 is approximately 650 mm. The height from the center of the first grip 1 to the bottom surface of the housing 30 is approximately 310 mm. (First shaft 14)
[0027] The first shaft 14 is the first rotation axis that tilts the first arm 2 left and right relative to the housing 30. A first gear 4 is fixed to the tip of the first shaft 14, as shown in Figure 4.
[0028] On the other hand, the second shaft 24 is a component that serves as a second rotation axis, tilting the second arm 8 left and right relative to the housing 30. The second shaft 24 is positioned in a straight line with the first shaft 14. A second gear 6 is fixed to the tip of the second shaft 24. (Intermediate gear 5)
[0029] The intermediate gear 5 is meshed between the first gear 4 and the second gear 6. These first gear 4, second gear 6, and intermediate gear 5 are bevel gears. As shown in Figure 6, the first gear 4 and second gear 6 are spaced apart in opposing positions, and the intermediate gear 5 is positioned between them in a position perpendicular to these first gear 4 and second gear 6.
[0030] This arm wrestling device transmits the force that tilts the first arm 2 left and right to the first gear 4 via the first shaft 14. The first gear 4 then meshes with the second gear 6 via an intermediate gear 5, which is meshed with the first gear 5, thereby reversing the direction of the force and transmitting the reversed force to the second arm 8. As a result, the rotation of the first arm 2 is transmitted to the second arm 8 in the opposite direction, allowing players with different dominant hands to compete in arm wrestling.
[0031] Here, we consider a configuration where the first player holds the first grip 1 with their right arm, and the second player holds the second grip 9 with their left arm. When the first player holds the first grip 1 with their right hand, as in actual arm wrestling, and tilts the first arm 2 to the left (from the first player's perspective), the opposite second arm 8 will tilt to the right (from the first player's perspective), allowing for arm wrestling matches using different arms.
[0032] In the example shown in Figure 6, the input from the left side is from the first player. When the first gear 4 on the left side rotates, it meshes with the second gear 6 on the second player's side via the central intermediate gear 5, resulting in the second gear 6 on the second player's side rotating in the opposite direction to the first gear 4 on the first player's side. The force received by the second gear 6 of the second player is transmitted in the same order as on the first player's side: second rotating bearing 21, second support base 7, second arm 8, and second grip 9, before being transmitted to the second player's arm.
[0033] When the first player grasps the first grip 1 with their right arm and tilts their arm to the left, the second grip 9 on the second player's side will tilt in the opposite direction to the first grip 1, that is, to the left from the second player's perspective, due to the gear mechanism described earlier. Since the second player is grasping with their left arm, they will have to brace themselves to prevent it from falling to the left. In this way, a confrontation between the right arm and the left arm becomes possible.
[0034] Furthermore, the arm wrestling device not only rotates the first arm 2 and the second arm 8, but also includes a tilting mechanism that tilts the housing 30 in the front-to-back direction. Specifically, it comprises a first tilting mechanism that tilts the first arm 2 and a second tilting mechanism that tilts the second arm 8. (First tilting mechanism)
[0035] The first tilting mechanism connects the rear end of the first arm 2 to the rear end of the first shaft 14. The first tilting mechanism allows the first arm 2 to tilt freely around a first tilting axis perpendicular to the first rotation axis, either moving closer to or away from the housing 30. Specifically, as shown in Figure 4, a first rotation bearing 11 is fixed to the rear end of the first shaft 14. This first rotation bearing 11 and the rear end of the first arm 2 are tiltably connected by the first tilting mechanism. The first tilting mechanism consists of a pair of first support bases 3. The first support bases 3 are plate-shaped, and the rear end of the first arm 2 is sandwiched between the two first support bases 3, causing the first arm 2 to tilt in the front-rear direction through the first tilting axis.
[0036] To form the first tilting axis, a screw hole is provided at the rear end of the first support base 3. On the other hand, as shown in Figure 8, two holes are provided at the lower end of the first arm 2. The lower of these holes is sandwiched between the two first support bases 3, aligned with the hole at the rear end, and screwed in with a bolt to form the first tilting axis, and the first arm 2 is connected to the rear end of the first shaft 14 so that it can tilt freely in the front-rear direction.
[0037] The two first support bases 3 are bolted to the back of the first rotating bearing 11. When the first arm 2 is rotated to the left or right as viewed from the first player, the first rotating bearing 11 rotates along with it. As shown in Figure 4, the first rotating bearing 11 is connected to the first gear 4 through an axle, and this mechanism transmits the force of the first player to the first gear 4. (Second tilting mechanism)
[0038] Similarly, the second tilting mechanism connects the rear end of the second arm 8 to the rear end of the second shaft 24. The second tilting mechanism connects the second arm 8 so that it can tilt around the second tilting axis, which is perpendicular to the second rotation axis, in a direction that moves the second arm 8 closer to or further away from the housing 30. A second rotation bearing 21 is fixed to the rear end of the second shaft 24. The second rotation bearing 21 and the rear end of the second arm 8 are connected so that they can tilt by the second tilting mechanism. The second tilting mechanism consists of a pair of second support bases 7. The rear end of the second arm 8 is sandwiched between the two plate-shaped second support bases 7, and the second arm 8 is tilted in the front-rear direction through the second tilting axis.
[0039] Furthermore, the tilting of the first arm 2 and the tilting of the second arm 8 are linked via the first transmission mechanism, the second transmission mechanism, and the horizontal sliding mechanism. This allows the bending and straightening of the elbow, an important technique in arm wrestling, to be reproduced on the arm wrestling machine. In actual arm wrestling matches, it is a crucial tactic for players to bend their own elbows to bring their wrists closer to themselves and, conversely, straighten their opponent's elbows, thereby creating an advantageous position where they can exert force more easily and their opponents have difficulty. To reproduce this movement on the arm wrestling machine, a tilting mechanism is provided that allows players to bend and straighten their elbows, that is, tilt the arms in the forward and backward directions from the player's perspective, and a mechanism is added to link the tilting between players. This allows for movements that are closer to reality.
[0040] To achieve this tilting interlocking function, the arm wrestling device, as shown in Figures 10 and 11, includes a first tilting mechanism and a second tilting mechanism, as well as a first ring 13, a second ring 23, a horizontal sliding mechanism, a first transmission mechanism, and a second transmission mechanism. Note that in Figures 10 and 11, the weights, which will be described later, are not shown for illustrative purposes. (First Ring 13)
[0041] The first ring 13 is provided around the first shaft 14, as shown in Figure 4. The first ring 13 is circular and formed in an annular shape with a circular opening inside. The first ring 13 itself does not rotate. In other words, although the first shaft 14 passes through the inside of the ring, the first ring 13 does not rotate even when the first shaft 14 is rotated. (Second Ring 23)
[0042] Similarly, the second ring 23 is also provided around the second shaft 24. Like the first ring 13, the second ring 23 has a circular outer shape and is formed as an annular ring with a circular opening inside. The second ring 23 also does not rotate, and although the second shaft 24 passes through its ring-shaped interior, the second ring 23 does not rotate even when the second shaft 24 is rotated. (Horizontal sliding mechanism)
[0043] The horizontal sliding mechanism connects the first ring 13 and the second ring 23 so that they move in conjunction horizontally relative to the housing 30. As shown in Figures 1, 10, and 11, the horizontal sliding mechanism consists of guide rails 34 and guide holes 33. The pair of guide rails 34 are pipe-shaped and fix the left and right sides of the first ring 13 and the second ring 23, respectively. Guide holes 33 are also opened on the front 31 and back 32 of the housing 30, through which the guide rails 34 pass. By passing the pair of guide rails 34 through the guide holes 33 of the housing 30, the first ring 13 and the second ring 23, which are fixed to the guide rails 34, can be slid horizontally. In addition, auxiliary rails 35 are provided above and below the guide rails 34 inside the housing 30, parallel to the guide rails 34. Furthermore, a support column 36 is fixed in a crossing position in the middle of the guide rails 34, and the top and bottom of the support column 36 are slidably locked to the auxiliary rails 35. This allows the first ring 13 and the second ring 23 to slide more stably in the horizontal direction via the guide rail 34. (First transmission mechanism)
[0044] The first transmission mechanism transmits the movement of the first arm 2 tilting in the front-rear direction relative to the housing 30 via the first tilting axis as a horizontal movement of the first ring 13, which moves back and forth from the housing 30 along the horizontal sliding mechanism, from the first arm 2 to the first ring 13. The first transmission mechanism allows the first player to pull the first arm 2 towards themselves. This first transmission mechanism consists of a first arm joint 10 and a first pin 12. The first arm joint 10 is formed in the shape of a plate with holes opening at the front and rear. The rear end of the first arm joint 10 is rotatably connected to the first arm 2. In the example in Figure 4, a first arm joint rotation axis 2c, which connects to the first arm joint 10, is provided at the top of the first tilting axis.
[0045] The rear end of the first pin 12 is connected to the tip of the first arm joint 10. The tip of the first pin 12 is provided with a disc-shaped first flange 12a with an outer diameter larger than the diameter of the shell 12b of the first pin 12. This first pin 12 is formed in a rivet-like manner, as shown in Figure 9. (Second transmission mechanism)
[0046] The second transmission mechanism transmits the movement of the second arm 8 tilting in the front-rear direction relative to the housing 30 via the second tilt axis as a horizontal movement of the second ring 23, which moves back and forth from the housing 30 along the horizontal sliding mechanism, from the second arm 8 to the second ring 23. The second transmission mechanism allows the second player to pull the second arm 8 towards themselves. This second transmission mechanism consists of a second arm joint 20 and a second pin 22. Like the first arm joint 10, the second arm joint 20 is rotatably connected to the second arm 8 at its rear end. The second pin 22 is also formed in a rivet shape and is rotatably connected to the tip of the second arm joint 20 at its rear end. The tip of the second pin 22 is provided with a disc-shaped second flange with an outer diameter larger than the diameter of the belly of the second pin 22.
[0047] As shown in Figure 10, the arm wrestling device converts the movement of the first player tilting the first arm 2 towards themselves around the first tilt axis into a horizontal movement of the first ring 13 towards themselves via the first transmission mechanism, and the horizontal movement of the first ring 13 is transmitted as a horizontal movement of the second ring 23 via the horizontal slide mechanism, and further, the horizontal movement of the second ring 23 is converted into a movement of tilting the second arm 8 away from the second player via the second transmission mechanism. This allows the pulling motion of the first arm 2 to be transmitted to the second arm 8, realizing the pulling motion that is the strategy involved in arm wrestling. Similarly, as shown in Figure 11, the movement of the second player tilting the second arm 8 towards themselves around the second tilt axis is converted into a horizontal movement of the second ring 23 towards themselves via the second transmission mechanism, and the horizontal movement of the second ring 23 is transmitted as a horizontal movement of the second ring 23 via the horizontal slide mechanism, and further, the horizontal movement of the second ring 23 is converted into a movement of tilting the second arm 8 away from the second player via the second transmission mechanism.
[0048] Furthermore, while achieving this pulling motion, the arm can also tilt. By separating the tilting motion and the pulling motion of the arm, excessive twisting or other loads are prevented from being applied to the components of the arm wrestling device, thereby maintaining safety and strength.
[0049] Specifically, the first pin 12 constituting the first transmission mechanism is aligned with the inner side 13a of the annulus of the first ring 13, while a portion of the first flange 12a is hooked to the back side of the annulus of the first ring 13. With this first transmission mechanism, when the first arm 2 is tilted in the direction of being pulled towards the first player, as shown in Figure 10, the first ring 13 hooked to the first flange 12a is moved horizontally in the direction of being pulled towards the first player. Conversely, when the first ring 13 moves away from the first player from the second player side via the second ring 23 and the horizontal sliding mechanism, as shown in Figure 11, the first ring 13 moves the first flange 12a away from the first player.
[0050] On the other hand, when the first arm 2 is rotated around the first axis of rotation, the shell 12b of the first pin 12 moves along the inner surface 13a of the annular shape of the first ring 13. In this case, the first pin 12 can rotate along the inner surface 13a of the first ring 13 without resistance. In this way, the rotational movement of the first arm 2 is not hindered by the tilting of the first arm 2, and the rotation and tilting of the first arm 2 can operate independently.
[0051] Similarly, in the second transmission mechanism, the second pin 22 is positioned along the inside of the annulus of the second ring 23, while a part of the second flange is hooked to the back side of the annulus of the second ring 23. With this second transmission mechanism, when the second arm 8 is tilted in the direction of being pulled towards the second player, as shown in Figure 11, the second ring 23, which is hooked to the second flange, is moved horizontally in the direction of being pulled towards the second player. Conversely, as shown in Figure 10, when the second ring 23 moves away from the second player via the first ring 13 and the horizontal sliding mechanism, the second ring 23 moves in the direction of pulling the second flange away from the second player.
[0052] On the other hand, when the second arm 8 is rotated around the second axis of rotation, the antinode of the second pin 22 moves along the inside of the annular shape of the second ring 23. In this case, the second pin 22 can rotate along the inside of the second ring 23 without resistance. In this way, the rotational movement of the second arm 8 is not hindered by the tilting of the second arm 8, and the rotation and tilting of the second arm 8 can operate independently.
[0053] Furthermore, by separating the rotational movement of the first arm 2 and the second arm 8 from the tilting axis perpendicular to the rotation axis, it becomes possible to implement the arm-pulling motion, an important technique in arm wrestling, in an arm wrestling device while avoiding excessive load on the rotation axis that could cause it to twist and break.
[0054] Specifically, in the arm wrestling device shown in Figure 2, the first player grasps the first grip 1 with their right hand, just like in actual arm wrestling. The mechanism allows the first player to bend and straighten their elbow, meaning the first grip 1 and the first arm 2 move in the forward and backward directions from the first player's perspective. This mechanism allows for movements that are close to those of real arm wrestling. In actual arm wrestling matches, bending the elbow and bringing the wrist towards oneself is an important tactical maneuver to gain an advantageous position.
[0055] As shown in Figure 8, two holes are opened in the lower part of the first arm 2. The upper of these holes is used as the first arm joint rotation axis 2c, and the first arm joints 10 are assembled to both sides as shown in Figures 2 and 4. The hole at the rear end of the first arm joint 10 is not fixed to the first arm joint rotation axis 2c, but can rotate freely. The first pin 12 is connected to the hole at the tip of the first arm joint 10 by passing a bolt through it. The first support base 3 has a guide slit 3a along its length as shown in Figure 4, and by passing the tip of the bolt through the guide slit 3a, the first pin 12 is guided to move parallel to the first support base 3. This mechanism converts the tilting motion with the first tilt axis as the rotation axis, output by the first player, into linear motion in the forward and backward directions. The first pin 12 has the shape shown in Figure 9, and the first flange 12a at its tip is assembled so as to hook onto the open end of the first ring 13 from the inside as shown in Figure 4. When the first pin 12 moves towards the first player, the first flange 12a of the first pin 12 catches on the first ring 13, causing the first ring 13 to move along with it. This first ring 13 is connected to the second ring 23 on the second player's side, so the input from the second player is transmitted directly. Conversely, when the second player pulls towards the second player, the second ring 23 is pulled towards the second player, causing the second pin 22 to catch and the first player's arm to be pulled.
[0056] In arm wrestling, the condition for exerting the most arm strength is to bend the elbow as much as possible, so players are constantly pulling towards themselves. Therefore, this feature is essential to make the movement as close to reality as possible.
[0057] Furthermore, from the perspective of the first player, the forward and backward movement, that is, the tilting movement around the first tilting axis, is transmitted through the first pin 12 and the first ring 13. Also, when the first player tilts to the left or right, the force is released by the first pin 12 sliding along the inner surface of the open end of the first ring 13. This makes three-dimensional movement possible. In this way, each player can tilt their arm to the left or right while engaging in a forward and backward exchange, enabling more realistic movements. Thus, the feature of this embodiment is that it realizes and reproduces three-dimensional movement that can transmit not only rotation but also pushing and pulling. This creates an environment that does not give players a sense of unnaturalness during matches.
[0058] Thus, according to this embodiment, not only is the gear reversed, but the rotation of the gear is relieved by using a disc, enabling two-axis movement, which has the advantage of allowing for a more realistic confrontation. In particular, it is possible to perform linear motion in a direction parallel to the rotating main axis and transmit that to the opposite side connected by the gear. Specifically, the force output from the player is passed from the handle part through the rotating axis and the direction of the force from one side is reversed via a bevel gear. In addition, a disc is placed in the middle part between the handle part and the gear, and the force transmission is entrusted only to a pin, and the force received from the pin is transmitted to the opposite side via a rail, thereby enabling linear motion in a direction perpendicular to the direction of rotation. (Counterweight function)
[0059] Furthermore, the arm wrestling device may be equipped with a counterweight function that works to counteract any advantage one player gains due to the rotation angle of their arms. This can prevent situations where one player is at a disadvantage.
[0060] In sports, fairness is of paramount importance. In this embodiment, if any aspect that compromises fairness arises, such unfairness can be resolved by adding a mechanism to compensate for it. Specifically, when the first player knocks over the first arm 2, the gravitational forces acting on the first grip 1 and the first arm 2 are added together, creating an advantage for the first player. Conversely, for the second player, the gravitational forces acting on the second grip 9 and the second arm 8 are added together, creating an disadvantage. In this way, the dominant side becomes even more advantageous, and the inferior side becomes even more disadvantageous. A counterweight mechanism is provided to resolve this.
[0061] The counterweight function consists of a first clutch 16 provided on the first rotating bearing 11, a first weight 18 connected to the first clutch 16, a second clutch 26 provided on the second rotating bearing 21, and a second weight connected to the second clutch 26.
[0062] The first rotating bearing 11 is fixed to the rear end of the first shaft 14, as shown in Figure 4. As shown in Figure 3, the first rotating bearing 11 has a first slit 11a of a certain length that is aligned with the arc direction of the first rotating shaft. (First clutch 16)
[0063] The first clutch 16 has a hole in its center through which the first shaft 14 is inserted, and is rotatably supported around the first shaft 14. The first clutch 16 is equipped with a first projection 15 that is inserted into the first slit 11a. The first projection 15 can be made of a bolt or the like that is screwed into the first clutch 16.
[0064] When the first arm 2 is rotated by more than a certain angle around the first rotation axis, the edge of the first slit 11a of the first rotation bearing 11 fixed to the first shaft 14 comes into contact with the first projection 15, causing the first clutch 16 to rotate. As a result, the weight of the first weight 18 connected to the first clutch 16 acts as a counterweight that acts in a direction that opposes the rotation of the first arm 2. On the other hand, when the first arm 2 is not rotated by more than a certain angle around the first rotation axis, the edge of the first slit 11a of the first rotation bearing 11 fixed to the first shaft 14 does not come into contact with the first projection 15, and the first clutch 16 is not connected to the rotation of the first rotation bearing 11.
[0065] The second rotating bearing 21 is fixed to the rear end of the second shaft 24. Similar to the first rotating bearing 11, the second rotating bearing 21 has a second slit of a certain length that is aligned with the arc direction of the second rotating shaft. (Second clutch 26)
[0066] The second clutch 26 has a hole in its center through which the second shaft 24 is inserted, and is rotatably supported around the second shaft 24. The second clutch 26 is equipped with a second projection 25 that is inserted into the second slit.
[0067] When the second arm 8 is rotated by more than a certain angle around the second rotation axis, the edge of the second slit of the second rotation bearing 21 fixed to the second shaft 24 strikes the second projection 25, causing the second clutch 26 to rotate, and the weight of the second weight connected to the second clutch 26 acts as a counterweight that acts in a direction that opposes the rotation of the second arm 8. On the other hand, when the second arm 8 is not rotated by more than a certain angle around the second rotation axis, the edge of the second slit of the second rotation bearing 21 fixed to the second shaft 24 does not strike the second projection 25, and the second clutch 26 is not connected to the rotation of the second rotation bearing 21.
[0068] In this way, when the first player rotates the first arm 2 to gain an advantageous position, the counterweight can reduce the effect of the combined weight of the first arm 2 and the second arm 8 on the first player's advantage, thus creating a fair playing environment. The same effect applies to the second player. Furthermore, the counterweight function can be configured to activate only when the arms are tilted at a certain angle, so as not to interfere with the game.
[0069] Furthermore, the first weight 18 and the second weight may be interchangeable with weights of different weights, or additional weights may be added. This would allow for adjustment of the weights of the first weight 18 and the second weight, enabling adjustments to favor or disadvantage players and handicaps.
[0070] The first clutch 16 is connected to the first weight 18 by a wire 40. The second clutch 26 is connected to the second weight by a wire 40. The housing 30 has holes for passing each wire 40 through.
[0071] As shown in Figure 3, the first rotating bearing 11 has two arc-shaped first slits 11a. The first clutch 16 is positioned so that the first projection 15 is inserted into and slides through each first slit 11a, as shown in Figure 4. In Figure 4, when the first player grasps the first grip 1 and tilts the first arm 2 to their side, to the left in the figure, the first projection 15 attached to the first clutch 16 catches on the end of the arc-shaped first slit 11a of the first rotating bearing 11, and the first clutch 16 reacts. If the first player is at a disadvantage, that is, if the first arm 2 is tilted to the right in Figure 4, the first projection 15 simply slides within the first slit 11a, and the first clutch 16 does not react. Thus, when the first player is at an advantage, the first clutch 16 moves in the same way as the first rotating bearing 11, and when the first player is at a disadvantage, the first clutch 16 remains stationary. This function ensures that the counterweight reacts only to the player on the winning side.
[0072] Furthermore, a hole is provided at the top of the first clutch 16 for passing a wire 40 through. The wire 40, passed from the first clutch 16, passes through the wire guide 19 in Figure 5 and is attached to the first weight shaft 17. The first weight 18 is fixed to the rear end of the first weight shaft 17. When the first player grasps the first grip 1 with their right arm and tilts it to the left, the first clutch 16 reacts, and the first weight shaft 17, connected by the wire 40, and the first weight 18 fixed to it, are lifted upwards. The combined weight of the first weight 18 and the first weight shaft 17 is equal to the combined weight of the first grip 1, the first arm 2, the second grip 9, and the second arm 8. This cancels out the weight of the first grip 1 and the first arm 2, and the second grip 9 and the second arm 8, eliminating the disadvantage that arises from the mechanism of the arm wrestling device.
[0073] Furthermore, by adding a first weight of 18, you can introduce handicaps, allowing for a wider variety of gameplay. It can also be used for practice. (Digital scale)
[0074] Alternatively, a digital scale could be attached to the end of the wire, either in place of a weight or in addition to it. This would allow the player's strength to be measured using the digital scale, and the strength could be displayed numerically as needed, enhancing the enjoyment of the competition. Furthermore, by adding communication functionality, it would be possible for multiple players to compete against each other via a network connection, based on the strength measured by the digital scale. [Explanation of symbols]
[0075] 1...First grip; 1a...Flat section 2...First arm; 2a...Groove; 2b...Slit; 2c...Rotation axis of the first arm joint 3...First support base; 3a...Guide slit 4…First gear 5…Intermediate gear 6... Second gear 7…Second support base 8... Second Arm 9…Second grip 10…First Arm Joint 11...First rotating bearing; 11a...First slit 12...First pin; 12a...First guard; 12b...Belly 13...First ring; 13a...Inner ring 14…First Shaft 15...first protrusion 16...First clutch 17…First weight shaft 18...First weight 19…Wire guide 20...Second arm joint 21...Second rotating bearing 22... Second pin 23…Second Ring 24...Second shaft 25…Second protrusion 26... Second clutch 30… cabinet 31...Front 32...Back 33… Guide hole 34… Guide rail 35... Auxiliary rail 36…post 40... Wire
Claims
1. An arm wrestling device for a first player and a second player to compete in an arm wrestling match, The casing and A first arm, rotatably mounted on one side of the cabinet, for operation by the first player, A second arm, rotatably mounted on the opposite side of the cabinet, for operation by a second player, The first shaft serves as the first axis of rotation for tilting the first arm left and right relative to the housing, The second axis of rotation tilts the second arm left and right relative to the housing, and the second shaft is positioned in a straight line with the first shaft, The first gear is fixed to the tip of the first shaft, The second gear is fixed to the tip of the second shaft, An intermediate gear meshed between the first gear and the second gear, An arm wrestling competition device equipped with, The first gear, the second gear, and the intermediate gear are bevel gears. An arm wrestling device that transmits the force tilting the first arm left and right to the first gear via the first shaft, and then reverses the direction of the force by engaging with the second gear via an intermediate gear that is meshed with the first gear, thereby transmitting the reversed force to the second arm.
2. The arm wrestling competition device according to claim 1, further, At the tip of the first arm is a first grip for the first player to hold, which is attached so as to slide in an inclined position relative to the first arm, A second grip for the second player to grasp is attached to the tip of the second arm, allowing it to slide in an inclined position relative to the second arm, An arm wrestling competition device equipped with [specific features / equipment].
3. The arm wrestling competition device according to claim 1, further, A ring-shaped first ring is provided around the first shaft, which does not rotate even when the first shaft is rotated, A ring-shaped second ring is provided around the second shaft, which does not rotate even when the second shaft is rotated, A horizontal sliding mechanism connects the first ring and the second ring so that they can move in conjunction horizontally with the housing, A first tilting mechanism connects the first arm to the rear end of the first shaft, allowing it to tilt freely around a first tilting axis perpendicular to the first rotation axis, so as to move it closer to or further away from the housing. The first transmission mechanism transmits the movement of the first arm tilting relative to the housing around the first tilt axis as a horizontal movement of the first ring, which moves back and forth from the housing along the horizontal sliding mechanism, from the first arm to the first ring. A second tilting mechanism is provided at the rear end of the second shaft, which allows the second arm to be tilted towards or away from the housing around a second tilting axis perpendicular to the second rotation axis. The second transmission mechanism transmits the movement of the second arm tilting relative to the housing around the second tilt axis as a horizontal movement of the second ring, which moves back and forth from the housing along the horizontal sliding mechanism, from the second arm to the second ring. Equipped with, An arm wrestling competition device configured such that the first player tilts the first arm towards themselves around the first tilt axis, converting this movement into a horizontal movement of the first ring towards themselves via the first transmission mechanism, the horizontal movement of the first ring is transmitted to the second ring via a horizontal sliding mechanism, and the horizontal movement of the second ring is converted into a movement of tilting the second arm away from the second player via the second transmission mechanism.
4. An arm wrestling competition device according to claim 3, The first transmission mechanism is The rear end of the first arm joint is rotatably connected to the first arm, The rear end is rotatably connected to the tip of the first arm joint by a first pin. Equipped with, The first pin has a first flange at its tip. The first pin is positioned along the inside of the first ring's loop, while a portion of the first flange is hooked onto the back side of the first ring's loop. When the first arm is tilted in a direction that pulls it towards the first player, the first ring, which is hooked onto the first guard, is moved horizontally in a direction that pulls it towards the first player. The first arm is configured to move along the inside of the annular shape of the first ring when the first arm is rotated around the first axis of rotation. The second transmission mechanism is The second arm joint, whose rear end is rotatably connected to the second arm, The rear end is rotatably connected to the tip of the second arm joint by a second pin. Equipped with, The tip of the second pin is fitted with a second flange. The second pin is positioned along the inside of the second ring's loop, while a portion of the second flange is hooked onto the back side of the second ring's loop. When the second arm is tilted in the direction of pulling it towards the second player, the second ring, which is hooked onto the second flange, is moved horizontally in the direction of being pulled towards the second player. An arm wrestling competition device configured such that when the second arm is rotated around the second axis of rotation, the belly of the second pin moves along the inside of the annular shape of the second ring.
5. The arm wrestling competition device according to claim 1, further, A first rotating bearing is fixed to the rear end of the first shaft and has a first slit of a certain length along the arc direction of the first rotating axis, A second rotating bearing is fixed to the rear end of the second shaft and has a second slit of a certain length that is aligned with the arc direction of the second rotating axis, A first shaft is inserted through a hole in the center, and a first clutch is supported so as to be rotatable around the first shaft, A second shaft is inserted through a hole in the center, and a second clutch is supported so as to be rotatable around the second shaft, The first clutch and the first weight connected, The second clutch and the second weight connected, Equipped with, The first clutch is equipped with a first projection that is inserted into the first slit, The second clutch is equipped with a second projection that is inserted into the second slit, When the first arm is rotated beyond a certain angle around the first rotation axis, the edge of the first slit of the first rotation bearing fixed to the first shaft strikes the first projection, causing the first clutch to rotate. The weight of the first weight connected to the first clutch acts as a counterweight, acting in a direction that opposes the rotation of the first arm. An arm wrestling device configured such that when the second arm is rotated beyond a certain angle around the second rotation axis, the edge of the second slit of the second rotation bearing fixed to the second shaft strikes the second projection, causing the second clutch to rotate, and the weight of the second weight connected to the second clutch acts as a counterweight that acts in a direction that hinders the rotation of the second arm.
6. An arm wrestling competition device according to claim 5, When the first arm is not rotated beyond a certain angle around the first rotation axis, the edge of the first slit of the first rotation bearing fixed to the first shaft does not come into contact with the first projection, and the first clutch is not connected to the rotation of the first rotation bearing. An arm wrestling device configured such that, when the second arm is not rotated beyond a certain angle around the second rotation axis, the edge of the second slit of the second rotation bearing fixed to the second shaft does not come into contact with the second projection, and the second clutch is not connected to the rotation of the second rotation bearing.
7. An arm wrestling competition device according to claim 6, The first clutch is connected to the first weight by a wire. The second clutch is connected to the second weight by a wire. The enclosure has holes for passing each wire through. The first and second weights are interchangeable weights of different weights, making them suitable for arm wrestling matches.
8. The arm wrestling competition device according to claim 5, further, An arm wrestling competition device equipped with a digital scale attached to a wire.
Citation Information
Patent Citations
Arm drive device and method, control device, arm drive control system, and transmission medium
JP2000189665A