JP2008289621A - Roller skate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller skate which can reduce the risk of a user falling down by losing his balance. <P>SOLUTION: The roller skate 100 comprises projecting center tires 60, front tires 55 whose rotation direction is regulated on both sides of the center tires 60, and rear tires 51. The rotation direction of the front tiers 55 is regulated oppositely to the rear tires 51. When the roller skate 100 is advancing in a direction, while the front tires roll, the rotation of the rear tires is regulated. Consequently, the direction of travel of the roller skate 100 can be limited by making the front tires 55 and the rear tires 51 touch the ground alternately by using the center tires 60 as supporting points. Consequently, a decrease in the frequency of the roller skate 100 moving in unintended directions and a decrease in the frequency of the user losing his balance help reduce the risk of falling down. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to roller skates, and more particularly to roller skates that can reduce the risk of a user falling over when the balance is lost.

  In recent years, there has been an increasing awareness of safety considerations for playground equipment users. Roller skates, one of the playground equipment, are designed so that the user wears shoes equipped with wheels on both feet and slides the wheels on the road surface. The wheels rotate freely around the axle. In some cases, the roller skates rotate and rotate against the user's intention (for example, the roller skates move backward when there is an intention to slide forward). In that case, since the roller skate is located at a position different from the user's intention, it is difficult for the user to accurately put the weight on the roller skate, and there is a risk of falling out of balance easily.

  Therefore, for example, in Japanese Patent Laid-Open No. 4-33666, in order to reduce the risk of the user falling over when the balance is lost, the wheel to be grounded on the road surface is properly used and the wheel behind the user is grounded. On the other hand, a roller skate that can be stopped with a brake applied to the rear wheel is disclosed.

  The roller skate described above is provided between the roller 5a disposed on the front side of the user, the roller 5b disposed on the rear side of the user, and between the roller 5a and the roller 5b. And a roller 5c protruding further to the road surface side. Therefore, the grounding of the roller 5a and the roller 5b can be switched using the roller 5c as a fulcrum.

  Moreover, the roller 5b is provided with a brake member that restricts the rotation of the roller 5b. When the user tries to stop wearing the roller skate described above, the roller 5b is grounded so that the roller skates. The brake can be applied and stopped.

Further, the roller skate described above is provided with a stopper 6, and the stopper 6 rotates between the roller 5a and the roller 5c when the roller 5a and the roller 5c are in contact with the road surface in front of the roller 5a. It is arrange | positioned upward so that it may not disturb. Therefore, the user can float the roller 5c with the roller 5a as a fulcrum while the roller 5a is grounded, and can ground the stopper 6 to the road surface. Therefore, when the user tries to slide, the user can kick the roller skate without moving the roller skate by bringing the stopper 6 into contact with the road surface in order to transmit the sliding force to the road surface (Patent Document 1).
JP-A-4-33666 (FIG. 1)

  However, in the configuration where the rear wheel of the user is braked by grounding the user's rear wheel as in the conventional roller skate described above, the roller skate is contrary to the user's intention when attempting to stop. Although it is possible to prevent the roller skate from moving, the roller skate may move against the user's intention when trying to slide.

  That is, when the user tries to slide, the user takes a forward leaning posture, so that the roller 5a disposed on the front side of the user and the roller 5c disposed behind the roller 5a are grounded. Therefore, the grounding of the roller 5b disposed on the rear side of the user is released and the brake is released.

  For this reason, the roller skate moves in both the front and rear directions of the user. As a result, the roller skates may move against the user's intention, and in this case, the roller skates are located at a position different from the user's intention. However, there was a problem that it was difficult to break the balance and there was a risk of falling.

  In addition, when trying to run, the stopper 6 can be grounded by grounding the stopper 6 on the road in order to transmit the force to the road and kicking it without moving the roller skates. Until then, only the roller 5a disposed on the front side is grounded, and the roller skate moves in either the front-rear direction of the user. Therefore, the roller skates may move against the user's intention, and in this case, the roller skates are located at a position different from the user's intention. There was a problem that it was difficult to lose balance and there was a risk of falling.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a roller skate that can reduce the risk of the user falling over when the balance is lost.

  In order to achieve this object, according to the roller skate of the first aspect, the rolling element that rolls on the road surface, the support member that rotatably supports the rolling element, and the support member are disposed on the bottom side. A base member that is disposed on the upper surface side of the base member, and is attached to a user's foot, and the rolling element is disposed on the base member via the support member. A common tangent located on the road surface side of two of the common tangents that are in contact with both the outer circumference of the restriction rolling element and the outer circumference of one of the pair of restriction rolling elements and the outer circumference of the other restriction rolling element. A roller skate that further protrudes toward the road surface and that is disposed between the pair of regulating rolling elements and disposed on the base member via the support member. Allow rotation in the direction of rotation and reverse the one direction of rotation A rotation restricting device for restricting rotation in another rotating direction, the one rotating direction being a rotating direction when the restricting rolling element rolls on the road surface in a direction away from the free rolling element It is.

  The roller skate according to claim 2 is the roller skate according to claim 1, wherein one of the pair of restriction rolling elements is in a state where the user's feet are attached to the attachment member. One of the pair of restriction rolling elements is disposed at one end of the base member on the heel side of the foot, and the other restriction rolling element of the pair of restriction rolling elements is disposed at the other end of the base member on the toe side of the foot. The free rolling element is disposed at a position closer to the one restricting rolling element than the other restricting rolling element.

  The roller skate according to claim 3 is the roller skate according to claim 1 or 2, wherein the rolling element includes a plurality of the free rolling elements, and the rotation centers of the plurality of free rolling elements are positioned on the same line. Then, the plurality of free rolling elements are disposed via the support member.

  The roller skate according to claim 4 is the roller skate according to any one of claims 1 to 3, wherein the rotation restricting device includes a claw wheel portion having a tooth profile surface formed in a serrated shape on an outer periphery thereof, and a claw thereof. A claw member that moves between a position fitted to the tooth profile surface of the wheel portion and a position spaced from the tooth shape surface of the claw wheel portion, and the claw member fitted to the tooth shape surface of the claw wheel portion. A claw elastic member that urges the claw member to a position where the tooth profile surface is formed on an outer periphery of the rolling element, and the claw member rotates along the tooth profile surface when the claw wheel portion rotates in the one rotation direction. Rotation is continued by alternately moving the position to be fitted and the position to be separated from the claw wheel portion, and the position to which the claw member is fitted when the claw wheel portion rotates in the other rotation direction. The rotation of the claw wheel part is stopped by stopping at the rotation and the rotation of the claw wheel part is stopped. Direction is configured to be restricted in the rotational direction of the one.

  The roller skate according to claim 5 is the roller skate according to any one of claims 1 to 4, wherein the rotation restricting device includes an output unit and a connecting unit that connects the output unit to the base member or the support member. And an input part connected to the restriction rolling element and allowed to rotate in the one rotation direction with respect to the output part and restricted in rotation in the other rotation direction, and the output part. An urging member that urges the rotating member in the rotation direction, and the connecting means connects the output portion to the base member or the support member so as to be movable within a predetermined range. When rotated in the other rotation direction, the input unit is integrated with the output unit, the output unit is moved in the other rotation direction, and the reaction force against the rotational force of the output unit is the base member or the Pair with support member It is configured to be generated by the biasing member in accordance with the amount of movement of the output section that.

  A roller skate according to claim 6 is the roller skate according to claim 5, wherein the roller skate is a stop member that reciprocates between a contact position that contacts the free rolling element and a separated position that is a predetermined distance away from the free rolling element. A connecting member for connecting the stop member to the output portion, and when the output portion is moved in the one rotation direction, the stop member is moved via the connecting member, and the stop member is When the output portion is moved in the other rotational direction, the stop member is moved via the connecting member, and the stop member is disposed at the contact position to move the free rolling element. It is comprised so that a braking force may be provided to the said free rolling element by being pressed by.

  The roller skate according to claim 7 is the roller skate according to claim 2, wherein the roller skate is on the road surface side of two common tangents that are in contact with both the outer periphery of the one restricting rolling element and the outer periphery of the free rolling element. The one regulating rolling element is disposed through the support member with the common tangent line positioned parallel to the placement surface of the mounting member on which the user's foot is placed.

  The roller skate according to claim 8 is the roller skate according to claim 2, wherein the other restricting rolling element has a width direction of the user's foot in a state where the user's foot is mounted on the mounting member. When the user puts weight on the thumb side, the weight is put on the other regulating rolling element when the user puts weight on the thumb side. It is configured.

  According to the roller skate of the first aspect, the roller skate is grounded on the road surface by changing the inclination direction with respect to the road surface with the free rolling body as a fulcrum. In addition, the pair of restricting rolling elements are configured such that rotation when rolling on the road surface in a direction away from the free rolling element by the rotation restricting device is allowed and the opposite rotation is restricted. The center of gravity position where the weight is applied is located between one of the pair of restriction rolling elements and the free rolling element, so that the user's If the roller skate moves from the free rolling element side to the one restricted rolling element side against the intention, the user's body is left on the spot, so that it is positioned closer to the restricted rolling element side than the free rolling element. The center of gravity is moving on the roller skates toward the free rolling element.

  When the position of the user's center of gravity exceeds the free rolling element and is positioned on the other restricted rolling element side, the inclination direction of the roller skate changes, the grounding of one restricted rolling element on the road surface is released, and the other restricted rolling element is released. The moving object is grounded to the road surface. Since the other rolling elements do not rotate in the same direction as the one rolling element, the other rolling elements are grounded while the roller skate is moving from the free rolling element side to the one rolling element side. As a result, a braking force is applied to the roller skates, the movement of the roller skates is stopped, and the movement of the center of gravity of the user with respect to the roller skates is stopped.

  Therefore, it is possible to prevent the user from losing balance. As a result, even if the balance is likely to be lost due to the movement of the roller skates, the balance will not be lost any further, and the risk of the user falling over when the balance is lost can be reduced. effective.

  The position of the center of gravity on which the user's weight is placed is located between the other restricted rolling element and the free rolling element of the pair of restricted rolling elements, so that the other restricted rolling element and the free rolling element are grounded. In this case, even when the roller skate moves from the free rolling element side to the other restricting rolling element side against the user's intention, the same effect can be obtained by grounding the one restricting rolling element.

  According to the roller skate of the second aspect, in addition to the effect achieved by the roller skate of the first aspect, the free rolling element is disposed at a portion of the base member closer to the heel side of the foot than the toe side of the foot. The free rolling element can be disposed near an upright center of gravity position (a position closer to the heel side than the toe side) where the weight is applied when the user stands upright. Therefore, it is difficult to lose the balance due to the movement of the roller skates, and there is an effect that the risk of the user falling over when the balance is lost can be reduced.

  That is, when the free rolling element is disposed in a portion of the base member that is closer to the toe side of the foot than the heel side of the foot, for example, a configuration different from the roller skate in the present invention, the free rolling body and the upright center of gravity position are If the roller skates do not move at least apart, they will not switch the grounding of the rolling element. Therefore, when the grounding of the restricting rolling element is switched, the roller skates are moved from the upright center of gravity at least by a distance, and as a result, there is a problem that the balance is easily lost.

  On the other hand, in the roller skate according to the present invention, the free rolling element is disposed in the portion of the base member closer to the heel side of the foot than the toe side of the foot, so the free rolling body is disposed on the toe side of the foot from the heel side of the foot. Compared with the case where it is placed near the base member, the upright center of gravity position where the weight is applied when the user stands upright is closer to the free rolling body, so that the roller skate is relative to the upright center of gravity position of the user. Even if all the movements are reduced, the regulated rolling element to be grounded can be switched. Therefore, it is difficult to lose the balance due to the movement of the roller skates, and there is an effect that the risk of the user falling over when the balance is lost can be reduced.

  According to the roller skate of claim 3, in addition to the effect of the roller skate of claim 1 or 2, the roller skate is a direction orthogonal to the direction from the toe side to the heel side of the user's foot. Since the plurality of free rolling elements are disposed in the width direction of the roller skate, there is an effect that the stability in the width direction of the roller skates can be maintained by the plurality of free rolling elements disposed in the width direction of the roller skate.

  On the other hand, in the case of a configuration different from the roller skate in the present invention, for example, a configuration in which the rotation centers of a plurality of free rolling elements serving as fulcrums for changing the inclination direction of the roller skate are arranged on different lines, for example, use The position of the center of gravity on which a person's weight is applied is located between one of the pair of regulating rolling elements and one free rolling element located on the one regulating rolling element side of the plurality of free rolling elements As a result, in a state where one restricted rolling element and one free rolling element are grounded, the roller skates moved from the plurality of free rolling elements side to the one restricted rolling element side against the user's intention. If the user's body is left in place, the position of the center of gravity of the user located on the side of the one rolling element is more than the number of the free rolling elements on the roller skates. To move.

  Then, after the position of the user's center of gravity exceeds all of the plurality of free rolling elements arranged on the different lines, the other regulating rolling elements are grounded. Therefore, in order to switch the regulated rolling element to be grounded, the roller skate must move across all the lines with different positions with respect to the user, and accordingly the position of the roller skate and the position of the user's center of gravity. This causes a problem that the balance is easily lost due to the movement of the roller skates.

  On the other hand, in the roller skate in the present invention, the center of gravity of the user is 1 by arranging the rotation centers of a plurality of free rolling elements serving as fulcrums for changing the inclination direction of the roller skate on the same line. The control rolling element to be grounded can be switched simply by straddling two straight lines.

  Therefore, the position of the roller skate and the position of the user's center of gravity can be made difficult for the user to lose balance without leaving as far as the configuration in which the rotation centers of the plurality of free rolling elements are arranged on different lines. There is an effect that it is possible to reduce the risk of the user falling by breaking the balance.

  According to the roller skate of the fourth aspect, in addition to the effect achieved by the roller skate according to any one of the first to third aspects, the tooth profile surface is provided on the outer peripheral surface of the regulating rolling element, so that the tooth profile surface is provided. For this reason, it is possible to omit providing a claw wheel portion for the purpose. Therefore, it is possible to reduce the weight of the roller skates by omitting the claw wheel portion. Therefore, the physical load for operating the roller skates is reduced, and the roller skates can be operated with a small physical load. As a result, the operability of the roller skate can be improved.

  According to the roller skate of the fifth aspect, in addition to the effect achieved by the roller skate according to any one of the first to fourth aspects, the output portion and the output portion are within a predetermined range with respect to the base member or the support member. Connecting means for movably connecting, an urging member for urging the output unit in one rotation direction, rotation in one rotation direction with respect to the output unit is allowed, and rotation in another rotation direction is restricted. And the input part connected to the regulation rolling element, so that when the regulation rolling element is rotated in the other rotation direction, the input part is integrated with the output part, and the output part is in the other rotation direction. A reaction force against the rotational force of the output part is generated by the urging member in accordance with the amount of movement of the output part relative to the base member or the support member. Therefore, it is possible to follow a physical reaction for the user to balance the reaction force.

  Therefore, it is easy for the user to accurately put weight on the roller skates, and the frequency of losing balance is reduced. Therefore, there is an effect that it is possible to reduce the risk of the user falling by breaking the balance.

  In addition, as described above, the reaction force against the rotational force of the output portion is generated by the urging member in accordance with the amount of movement of the output portion relative to the base member or the support member, thereby reducing user fatigue. There is an effect that can be done. For example, the other restricted rolling element and the free rolling element are grounded to the road surface, and one roller skate of the pair of roller skates is kicked out in the direction opposite to the direction in which the other restricted rolling element is separated from the free rolling element. The output unit is moved in the other direction of rotation in which the other rolling elements are rotated, and the reaction force against the rotational force of the output unit is generated according to the amount of movement of the output unit, so that the reaction force is applied to the road surface. Can be conveyed gradually.

  Therefore, when one of the roller skates is kicked out, a sudden reaction force is prevented from rising, and the friction state between the other restricted rolling element and the road surface moves beyond the static friction area to the dynamic friction area, and the other restricted rolling element. Can be prevented from slipping on the road surface. It should be noted that the same effect as that of other restricted rolling elements can be obtained with respect to one restricted rolling element.

  Therefore, one roller skate is kicked out in a state of being stopped with respect to the road surface. As a result, it is possible to prevent the user's feet from moving unnecessarily, thereby reducing the user's fatigue. There is an effect that can be. The same effect as that of one roller skate can be obtained with respect to the other roller skate.

  Further, the structure different from the roller skate in the present invention, for example, a connecting means for connecting the output shaft to the base member or the supporting member is omitted, and a supporting member connecting means for movably connecting the supporting member to the base member is provided. When the moving direction of the connecting means is the front-rear direction of the roller skate, and the rotation of the restricting rolling element is restricted, the reaction force is gradually transmitted to the road surface by moving a predetermined distance along the base member together with the support member. In the case of the configuration, since the support member moves relative to the base member, the position of the regulating rolling element disposed on the base member changes by the support member, and the inclination angle with respect to the road surface of the roller skates changes. There is a risk that the user's sense of balance may be uncomfortable.

  In addition, since the support member that supports the weight of the user is moved, the support member connecting means that connects the support member must also have sufficient strength to support the weight of the user, in order to improve the strength. There is a problem that the weight increases as the reinforcement is added.

  On the other hand, in the roller skate in the present invention, the position where the regulating rolling element is disposed on the base member is changed by moving the regulating rolling element in another rotational direction and gradually transmitting the reaction force to the road surface. Therefore, the inclination angle with respect to the road surface of the roller skate becomes constant, and it is possible to make it difficult for the user to feel uncomfortable in the sense of balance. Therefore, there is an effect that the operational feeling of roller skating can be improved.

  In addition, since the output unit does not need to support the weight of the user and needs only to withstand the force from the regulated rolling element, the amount of the material to be used is not necessary to increase the strength compared to the configuration in which the support member is moved together. Can be reduced. Therefore, it is possible to reduce the weight of the roller skates and reduce the physical load for operating the roller skates, so that the operability of the roller skates can be improved.

  According to the roller skate of the sixth aspect, in addition to the effect achieved by the roller skate according to the fifth aspect, the stop member can be turned into the free rolling element via the connecting member by the force by which the output portion is moved in another rotational direction. Since it is configured to apply the braking force by pressing, it is not necessary to separately provide a device for generating a force for pressing the stop member against the free rolling element, and the structure can be simplified.

  Moreover, since it is the structure which presses a stop member directly to a free rolling element, it is not necessary to provide the member which generate | occur | produces a braking force by pressing a stop member, and can simplify a structure.

  Therefore, the weight of the roller skates can be reduced, the physical load for operating the roller skates is reduced, and the roller skates can be operated with a small physical load. As a result, the operability of the roller skate can be improved.

  Further, since the braking force is applied to the free rolling element by using the output unit that is moved in conjunction with the rotation of the restricting rolling element being controlled, the rotation of the restricting rolling element is restricted and braking is performed. In the same manner as in the above, by changing the inclination direction of the roller skate, it is possible to brake not only the restricted rolling element but also the free rolling element.

  In addition, it is not necessary to operate the regulation rolling element and the free rolling element separately, and the operation for braking can be completed by one operation, so that the timing at which the braking force is generated is deviated by the operation of the user. Can be eliminated.

  As a result, the distance from when the user tries to brake to when the user stops can be stabilized shortly, so that the frequency of avoiding a collision can be increased and the safety can be improved.

  According to the roller skate of the seventh aspect, in addition to the effect achieved by the roller skate of the second aspect, of the two common tangents that are in contact with both the outer periphery of the one restricting rolling element and the outer periphery of the free rolling element The common tangent located on the road surface side is configured to be positioned in parallel to the placement surface of the mounting member on which the user's foot is placed.

  Therefore, when the user maintains an upright state, the mounting surface of the mounting member on which the user's foot is mounted is disposed horizontally, and is disposed on the heel side of the free rolling element and the foot. Since the restricted rolling element is grounded to the road surface, the roller skate can be prevented from moving forward while the user is standing upright.

  In particular, when the user stands upright, the upright center of gravity position where the user's weight is applied is located on the heel side, and when the center of gravity position where the user's weight is applied moves from the upright center of gravity position to the back of the roller skate, it is used One can easily lose balance. Therefore, the one rolling element is grounded in an upright state, the movement of the roller skate to the front is restricted, and the position where the weight of the user is applied is restricted from moving to the rear of the roller skate. Can reduce the frequency of loss of balance. Therefore, there is an effect that it is possible to reduce the risk of the user falling by breaking the balance.

  According to the roller skate of the eighth aspect, in addition to the effect of the roller skate according to the second aspect, other regulating rolling elements are disposed at the base member portion which is on the thumb side in the width direction of the foot. When the roller skate is kicked out, the weight applied to the toe of the toe is accurately applied to the regulation rolling element disposed on the toe side of the foot. Therefore, there is an effect that it is difficult for the user to lose balance and the risk of falling is reduced.

  Hereinafter, a first preferred embodiment of the present invention will be described with reference to the accompanying drawings. First, the configuration of the roller skate 100 according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view illustrating a side surface of a left foot roller skate 100a according to the first embodiment. FIG. 2 is a bottom view showing the bottom surface of the left foot roller skate 100a.

  The roller skate 100 includes a left foot roller skate 100a and a right foot roller skate 100b. The left foot roller skate 100a and the right foot roller skate 100b have the same configuration except for the mounting tools 10a and 10b, and the mounting tools 10a and 10b are configured symmetrically, so the configuration of the left foot roller skate 100a. And a description of the configuration of the right foot roller skate 100b will be omitted. 1 to 2 indicate the front of the roller skate 100, the arrow B indicates the rear of the roller skate 100, and the arrows C and D illustrated in FIG. 2 indicate the width direction of the roller skate 100. Show.

  As shown in FIGS. 1 and 2, the left foot roller skate 100a includes a tire 50 that rolls on a road surface D, a bracket portion 30 that pivotally supports the tire 50, and the bracket portion 30 disposed on the bottom surface side. And a base 20 configured in a flat plate shape with an aluminum alloy, and a mounting tool 10a fixed to the upper surface of the base 20 with a bolt B and mounted on the user's foot 90.

  As shown in FIG. 1, the wearing tool 10 a includes a placement portion 11 a configured in a flat plate shape with rubber, and a belt portion 12 a that fixes the foot 90 to the placement portion 11 a. Therefore, by adjusting the belt portion 12a, even the legs 90 having different sizes can be fixed to the placement portion 11a.

  As shown in FIG. 2, the tires 50 are arranged in two rows while maintaining the positional relationship translated in the width direction (arrow CD direction in FIG. 2) of the left foot roller skate 100 a. Accordingly, the placement portion 11a (see FIG. 1) of the left foot roller skate 100a can be kept parallel to the width direction of the left foot roller skate 100a, and the stability in the width direction of the left foot roller skate 100a can be maintained.

  As shown in FIG. 1, the tire 50 includes a rear tire 51 disposed on the heel side of the user's foot (arrow B side in FIG. 1), the rotation direction of which is regulated by the ratchet mechanism 40, and the user's foot. A front tire 55 which is disposed on the toe side (arrow A side in FIG. 1) and whose rotation direction is restricted by the ratchet mechanism 40; and a center tire 60 which is disposed between the rear tire 51 and the front tire 55. Yes. The rear tire 51, the front tire 55, and the center tire 60 are configured in a circular shape when viewed from the side (viewed in the direction of the drawing in FIG. 1) and have the same diameter.

  The bracket portion 30 includes a standard bracket 31 that pivotally supports the rear tire 51 and the front tire 55, a high bracket 36 that pivotally supports the center tire 60, and a brake 70 that applies a braking force to the center tire 60. The outer periphery of the center tire 60 protrudes toward the road surface D from the tangent line N on the road surface D side of two tangent lines that contact the outer periphery of the front tire 55 and the outer periphery of the rear tire 51. Therefore, when the inclination direction of the left foot roller skate 100a with respect to the road surface D is changed with the center tire 60 as a fulcrum, the grounding of the rear tire 51 and the front tire 55 to the road surface D can be switched.

  Here, the position of the center of gravity of a person will be briefly described. The human center-of-gravity position shown here indicates a position where the weight balance is maintained in the front-rear direction (the arrow AB direction in FIG. 1) shown in FIG. Generally, when a person stands upright, there is a center of gravity position (hereinafter referred to as “upright center of gravity position”) at a position approximately 35% from the heel side with respect to the length of the sole of the foot.

  Further, as shown in FIG. 1, the rotation center SC of the center tire 60 is disposed at a distance t1 from the rotation center S1 of the rear tire 51, and the distance t1 is from the rotation center S1 of the rear tire 51 to the front tire 55. It is set to a ratio between 30% and 40% with respect to the distance t2 to the rotation center S2. Therefore, the user's upright center of gravity is close to the center tire 60, and the rear tire 51 and the front tire 55 that are grounded can be switched even if the amount of movement of the left foot roller skate 100a is small.

  Next, a detailed configuration of the left foot roller skate 100a will be described with reference to FIG. FIG. 3A is a side view showing the side surfaces of the center tire 60 and the high bracket 36, and FIG. 3B is a side view showing the side surfaces of the rear tire 51 and the standard bracket 31. 3C is a bottom view showing the bottom surfaces of the center tire 60 and the high bracket 36, and FIG. 3D is a bottom view showing the bottom surfaces of the rear tire 51 and the standard bracket 31. As shown in FIG. . 3 indicates the front side of the roller skate 100, and the arrow B indicates the rear side of the roller skate 100. 3 indicates a rotation direction when the rear tire 51 rolls on the road surface D in the B direction, and an arrow F indicates a rotation direction when the front tire 55 rolls on the road surface D in the A direction. Is shown.

  As shown in FIGS. 3B and 3D, the rear tire 51 is made of hard rubber, and a plurality of (six in the first embodiment) constituting the ratchet mechanism 40 are formed on the outer peripheral surface thereof. The claw fitting groove 52 is provided. A hole 53 is formed in the axial center of the rear tire 51, and a tire shaft 42 described later is inserted into the hole 53. The tire shaft 42 is formed in a cylindrical shape, and both end portions of the tire shaft 42 are inserted into holes 35 of a standard bracket 31 to be described later, and are clipped C with respect to the longitudinal direction (vertical direction in FIG. 3 (d)). It is fixed.

  As shown in FIG. 3 (d), the standard bracket 31 has a bottom surface 32 configured in a rectangular flat plate shape and a right angle from both sides (FIG. 3 (d) vertical direction) of the bottom surface 32 (FIG. 3 (d) paper surface. And a pair of side surfaces 33 which are erected in the vertical direction and are configured in the shape of an inverted triangle (see FIG. 3B). And is fixed to the base 20 by bolts B. The standard bracket 31 is made of resin and has a ratchet mechanism 40 attached thereto.

  As shown in FIG. 3 (b), a plurality of (two in the first embodiment) holes 35 and a ratchet shaft guide 34 are formed on the side surface 33. The plurality of holes 35 are formed as through holes penetrating the side surface 33, the tire shaft 42 is inserted into the hole 35 formed at the lower portion of the side surface 33, and the spring 35 is inserted into the hole 35 formed at the upper portion. A stopper 47 is inserted.

  The ratchet shaft guide 34 is formed as an arc-shaped through-hole centered on the tire shaft 42, and a ratchet shaft 43 is inserted therein. Further, the length along the arc shape from one end side (arrow F direction side) to the other end (arrow R direction side) of the inner peripheral surface of the ratchet shaft guide 34 is set to a dimension value L, and the ratchet shaft In the ratchet shaft guide 34, 43 can be within the range of the dimension value L as a movement range. The predetermined range recited in claim 5 corresponds to the range of the dimension value L defined by the ratchet shaft guide 34.

  The ratchet shaft 43 is formed in a columnar shape, and is connected to one end of a ratchet plate 45 formed in an aluminum alloy into a strip-like flat plate shape. The other end of the ratchet plate 45 is pivotally supported on the tire shaft 42. The ratchet shaft 43 is urged in the direction of arrow R by a buffer spring 46 that generates an urging force in the rotation direction about the tire shaft 42.

  Furthermore, the ratchet shaft 43 pivotally supports a ratchet pawl 41, and the ratchet pawl 41 is urged in the direction of arrow R by a ratchet spring 44 that generates an urging force in the rotational direction around the ratchet shaft 43. And is fitted into a claw fitting groove 52 formed on the outer peripheral surface of the rear tire 51.

  As shown in FIG. 3 (b), the claw fitting groove 52 is configured in a sawtooth shape having inclined surfaces with different inclinations, one inclined surface has a gentle inclination angle, and the other inclined surface has The tilt angle is tight. Therefore, the rear tire 51 rotates in the rotation direction (hereinafter referred to as “rear rotation allowable direction”) (arrow R direction) when rolling on the road surface D in the direction away from the center tire 60 (arrow B direction in FIG. 3). Then, the ratchet claw 41 is transferred to the adjacent claw fitting groove 52 along one inclined surface.

  On the other hand, when the rear tire 51 rotates in a rotation direction opposite to the rear rotation allowable direction (hereinafter referred to as “rear rotation restriction direction”) (arrow F direction), the ratchet pawl 41 is fitted to the other inclined surface and the rear tire 51 Rotate together. Since the ratchet pawl 41 is pivotally supported by the ratchet shaft 43, the ratchet shaft 43 is integrated with the rear tire 51 and moves in the rear rotation restricting direction (arrow F direction) by a range set by the ratchet shaft guide 34. Is done.

  As described above, the ratchet mechanism 40 that regulates the rotation of the rear tire 51 includes the ratchet pawl 41, the ratchet shaft 43, the ratchet spring 44, and the pawl fitting groove 52, and regulates the rotation of the rear tire 51. It is moved in the rear rotation restricting direction (arrow F direction).

  Therefore, the rotational force of the rear tire 51 is gradually transmitted to the left foot roller skate 100a (see FIG. 1) by the elastic force of the buffer spring 46 generated by the movement of the ratchet shaft 43. Thus, since the rotational force of the rear tire 51 is gradually transmitted, the user is less likely to lose the balance and the risk of falling can be reduced as compared with the case where the rotational force is transmitted suddenly.

  Further, the outer peripheral surface of the rear tire 51 is formed with a claw fitting groove 52 having a sloped surface with different slopes and configured in a sawtooth shape, so that a member for providing the claw fitting groove 52 needs to be provided separately. There is no. Since the members constituting the left foot roller skate 100a are reduced, the weight of the left foot roller skate 100a can be reduced. Therefore, since the physical load for operating the left foot roller skate 100a is reduced, the operability of the left foot roller skate 100a can be improved.

  As shown in FIGS. 3B and 3D, the buffer spring 46 generates a biasing force in the rotational direction around the tire shaft 42, and is a spring in which a metal wire is wound spirally. And a pair of attachment portions that are connected to both ends of the spring portion and configured in a straight line shape.

  The spring portion and the tire shaft 42 are disposed between the pair of side surfaces 33 of the standard bracket 31, and the tire shaft 42 is inserted inside the spring portion, so that the spring portion and the tire shaft 42 are sandwiched between the pair of side surfaces 33. The space use efficiency can be improved. Therefore, the size of the standard bracket 31 can be reduced.

  Further, as shown in FIG. 3B, the pair of attachment portions are respectively attached to the ratchet shaft 43 and the spring stopper 47, and the buffer spring 46 is in the ratchet shaft in the rear rotation allowable direction (arrow R direction). 43 is energized.

  Therefore, when the rear tire 51 is rotated in the rear rotation restricting direction (arrow F direction), the ratchet pawl 41 is fitted into the pawl fitting groove 52 formed on the outer peripheral surface of the rear tire 51, and the ratchet that pivotally supports the ratchet pawl 41. The shaft 43 is moved in the rear rotation restricting direction (arrow F direction). The urging force of the buffer spring 46 that urges the ratchet shaft 43 in the rear rotation allowable direction (arrow R direction) becomes a reaction force against the force that rotates the rear tire 51, and the reaction force is the amount of movement of the ratchet shaft 43. It will be generated gradually according to.

  The front tire 55 (see FIG. 1), the ratchet mechanism 40 (see FIG. 1) that regulates the rotational direction of the front tire 55, and the standard bracket 31 (see FIG. 1) that pivotally supports the ratchet mechanism 40 and the front tire 55. 1) refers to a rear tire 51, a ratchet mechanism 40 that regulates the rotational direction of the rear tire 51, and a standard bracket 31 that pivotally supports the ratchet mechanism 40 and the rear tire 51 with respect to the base 20 in the front-rear direction (see FIG. 1B direction) is attached in the opposite direction, and since it has the same configuration, description thereof is omitted.

  As shown in FIGS. 3A and 3C, the center tire 60 is made of hard rubber, and a hole 61 is formed in the center of the center tire 60. The tire shaft 42 is inserted into the hole 61, and both end portions of the tire shaft 42 are inserted into the holes 39 of the high bracket 36 and are clipped by the clip C in the longitudinal direction (the vertical direction in FIG. 3 (c)). Is fixed.

  The high bracket 36 has a bottom surface 37 configured in a rectangular flat plate shape, and an inverted triangular shape that is erected at right angles (vertical direction in FIG. 3D) on both sides of the bottom surface 37 (FIG. 3D). And a pair of side surfaces 38 configured in a shape, and is formed in an inverted triangle shape in a side view (viewed in the vertical direction in FIG. 3D) with a U-shaped cross section, and is fixed to the base 20 by bolts B. Yes. The high bracket 36 is made of resin in the same manner as the standard bracket 31.

  The side surface 38 is configured to have a dimension value higher than the side surface 33 of the standard bracket 31 (dimension in the vertical direction in FIG. 1), and a plurality of (three in the first embodiment) holes 39 are formed. The plurality of holes 39 are formed as through holes penetrating the side surface 38, a tire shaft 42 is inserted into the hole 39 formed in the lower part, and a support shaft is inserted into the hole 39 formed in the upper part. 48 is inserted.

  As shown in FIG. 3A, a plurality of brakes 70 (two in the first embodiment) are provided for one center tire 60. One of them is a ratchet shaft that is disposed in the rear direction of the roller skate 100 with respect to the center tire 60 (in the direction of arrow B in FIG. 3A) and is a part of the ratchet mechanism 40 that regulates the rotation of the rear tire 51. 43 (see FIG. 3D). The other is arranged on a ratchet shaft 43 that is a part of a ratchet mechanism 40 that is disposed in the forward direction of the roller skate 100 with respect to the center tire 60 (the direction of arrow A in FIG. 3A) and restricts the rotation of the front tire 55. It is supported.

  The brake 70 includes a brake pad 71 that is in contact with the outer peripheral surface of the center tire 60, a first connection shaft 72 that is connected to the brake pad 71, the first connection shaft 72, and a ratchet shaft 43 (see FIG. 3 (b)) is connected to the second connecting shaft 73.

  The brake pad 71 is formed of an aluminum alloy in a flat plate shape, and the surface facing the center tire 60 is formed in a concave shape corresponding to the outer peripheral surface of the center tire 60. The brake pad 71 is disposed at a position away from the outer peripheral surface of the center tire 60 when the ratchet shaft 43 (see FIG. 3B) moves in the rear rotation allowable direction and is stopped by the ratchet shaft guide 34. When the ratchet shaft 43 moves in the rear rotation restricting direction, the ratchet shaft 43 is disposed in contact with the outer peripheral surface of the center tire 60.

  Thus, since the outer peripheral surface of the center tire 60 is configured as a member that generates a braking force when the brake pad 71 is pressed, there is no need to separately provide a member that generates the braking force, and the structure is simplified. can do.

  As shown in FIG. 3A, the first connecting shaft 72 is formed in a rod shape, one end of which is pivotally attached to the support shaft 48, and the other end is connected with a brake pad 71. In addition, a second connection shaft 73 is attached to a portion between one end and the other end of the first connection shaft 72. The support shaft 48 is inserted into the hole 39 and fixed to the longitudinal direction (the vertical direction in FIG. 3C) by the clip C.

  Therefore, for example, according to the brake 70 disposed in the rear direction (the arrow B direction in FIG. 1) of the roller skate 100 with respect to the center tire 60, the rear tire 51 rotates in the rear rotation restricting direction (the arrow F direction). Thus, when the ratchet shaft 43 is regulated by the ratchet pawl 41 and moved in the rear rotation regulation direction, the second connecting shaft 73 that is pivotally attached to the ratchet shaft 43 is directed from the rear tire 51 toward the center tire 60 (FIG. 3 ( a) It is moved in the direction of arrow A).

  The first connecting shaft 72 to which the second connecting shaft 73 is attached is moved toward the outer peripheral surface of the center tire 60 around the support shaft 48, and the brake pad 71 connected to the other end is connected to the center tire 60. It is made to contact | abut to the outer peripheral surface. The moving range of the ratchet shaft 43 is set with a margin that allows the ratchet shaft 43 to move even if the brake pad 71 contacts the outer peripheral surface of the center tire 60. Therefore, the rotational force of the rear tire 51 is transmitted to the center tire 60 via the brake pad 71 without being received by the ratchet shaft guide 34.

  As a result, the brake pad 71 is pressed against the center tire 60 using the rotation of the rear tire 51, so that it is not necessary to separately provide a device for generating a pressing force, and the structure can be simplified. Therefore, the weight reduction of the left foot roller skate 100a can be achieved, and the physical load for operating the left foot roller skate 100a is reduced, so that the operability of the left foot roller skate 100a can be improved.

  Further, since the braking force is applied to the center tire 60 in conjunction with the rotation of the rear tire 51 being restricted, the center tire 60 can be braked in addition to the rear tire 51. In addition, since it is not necessary to operate the rear tire 51 and the center tire 60 separately, the operation for braking can be completed with one operation. Therefore, it is possible to prevent the timing at which the braking force is generated from being shifted by the user's operation.

  As a result, since the distance from the start of braking to the stop can be stabilized short, the frequency at which a collision can be avoided increases and the safety can be improved. The safety of the brake 70 disposed in the front direction of the roller skate 100 with respect to the center tire 60 (the direction of arrow A in FIG. 1) can be similarly improved. The right foot roller skate 100b also has the same configuration except for the left foot roller skate 100a and the mounting devices 10a and 10b, and thus has the same effect.

  Next, with reference to FIG. 4, the method of sliding using the roller skate 100 is demonstrated. FIG. 4 is a state transition diagram showing the transition of the state of sliding using the roller skate 100. FIG. 4A is a stop state diagram showing a state of stopping, and FIG. 4B is a first acceleration state diagram showing a state of accelerating from the stop, and FIG. ) Is a constant speed state diagram showing a state where the vehicle is moving without acceleration. FIG. 4D is a second acceleration state diagram showing a further accelerating state, and FIG. 4E is a first braking state diagram showing a braking state. 4 (f) is a second braking state diagram illustrating a state where braking is performed with a posture different from that of FIG. 4 (e). Note that an arrow A shown in FIG. 4 indicates a sliding direction, and an arrow B indicates a direction opposite to the sliding direction.

  First, as shown in FIG. 4A, the user wears the roller skate 100, puts his weight on the front side of the center tire 60 on the horizontal road surface D (in the direction of arrow A in FIG. 4), and the center tire 60 and The front tire 55 is brought into contact with the road surface D and stopped.

  Next, as shown in FIG. 4B, the user kicks out the left foot roller skate 100a in the direction opposite to the sliding direction (direction of arrow B in FIG. 4) in order to start sliding forward. The front tire 55 rotates in the direction in which the road surface D rolls in the direction away from the center tire 60 (direction of arrow A in FIG. 4) by the ratchet mechanism 40 (hereinafter referred to as “front rotation allowable direction”) (FIG. 1 is allowed to rotate in the direction indicated by arrow F, and is restricted from rotating in the direction opposite to the direction allowed for front rotation (hereinafter referred to as “front rotation restricting direction”) (direction indicated by arrow R in FIG. 1). .

  That is, since the rotation direction when the front tire 55 rolls on the road surface D in the direction opposite to the sliding direction (the direction of arrow B in FIG. 4) is the front rotation restriction direction, the front tire 55 moves in the direction opposite to the sliding direction. Does not roll. Therefore, the left foot roller skate 100a can maintain a stopped state with respect to the road surface D even when kicked in the direction opposite to the running direction. Force can be transmitted via 100a.

  Moreover, since the front rotation allowable direction of the front tire 55 is the rotation direction when the road surface D rolls in the sliding direction (the arrow A direction in FIG. 4), the front tire 55 rolls in the sliding direction. Therefore, the user can slide in the sliding direction by the force of putting the weight on the right foot roller skate 100b and kicking out the left foot roller skate 100a.

  Then, as shown in FIG. 4 (c), a user who is sliding with his / her weight on the right foot roller skate 100b kicks out the front tire 55 of the left foot roller skate 100a once separated from the road surface D, and The center tire 60 is brought into contact with the road surface D again. As described above, since the front tire 55 rolls in the sliding direction (the direction of arrow A in FIG. 4), the user slides in the sliding direction with the weight applied to the left foot roller skate 100a and the right foot roller skate 100b. be able to.

  Next, as shown in FIG. 4 (d), the user sliding with weight on the left foot roller skate 100a and the right foot roller skate 100b kicks out the left foot roller skate 100a from the stopped state. Similarly to the time, the right foot roller skate 100b is kicked out in the direction opposite to the sliding direction (direction of arrow B in FIG. 4). The kicked right foot roller skate 100b can be kept stationary with respect to the road surface D because the front tire 55 is in contact with the ground. Therefore, the user can put the left foot roller skate 100a on the road surface D. Power can be conveyed through. By repeating the above-described operation, the user can slide using the roller skate 100.

  Next, as shown in FIG. 4E, for example, the user positions the left foot roller skate 100a and the right foot roller skate 100b in the sliding direction (the arrow AB direction in FIG. 4) in order to shift from sliding to stopping. With the center tire 60 as a fulcrum, the inclination direction with respect to the road surface D is changed, the grounding of the front tire 55 to the road surface D is released, and the rear tire 51 is grounded. As described above, the rear rotation restricting direction (the arrow R direction in FIG. 1) of the rear tire 51 is the rotation direction when the road surface D rolls in the sliding direction (the arrow A direction in FIG. 4). By being grounded in the state of traveling in the direction of arrow A), a braking force is generated by the frictional force between the road surface D and the rear tire 51, and the user can stop from the traveling state through the braking state. it can.

  Moreover, as shown in FIG.4 (f), it replaces with the stop method in FIG.4 (e), and a user can also shift to a stop through a braking state, after arranging both feet. That is, the user moves the position of the center of gravity from the center tire 60 in the direction opposite to the sliding direction (direction of arrow B in FIG. 4), thereby changing the inclination direction of the left foot roller skate 100a and the right foot roller skate 100b with respect to the road surface D. Can do. Therefore, the grounding of the front tire 55 to the road surface D is released, and the rear tire 51 is grounded. Therefore, the braking force can be generated by the frictional force between the rear tire 51 and the road surface D, and the vehicle can be stopped from the advanced state through the braking state.

  In this way, the user switches the grounding of the front tire 55 and the rear tire 51 to the road surface D, thereby transmitting the kicking force and the braking force to the road surface D and using the roller skate 100 to slide or stop. You can do it.

  That is, the front rotation allowable direction of the front tire 55 is the rotation direction when the front tire 55 rolls on the road surface D in the sliding direction (the direction of arrow A in FIG. 4). For example, contrary to the user's intention, The left foot roller skate 100a may move in the sliding direction (direction of arrow A in FIG. 4). In that case, when the user's body is left on the spot, the position of the center of gravity located on the front tire 55 side (the arrow A side in FIG. 4) from the center tire 60 is directed toward the center tire 60. Move up.

  When the position of the user's center of gravity exceeds the center tire 60 and is positioned on the rear tire 51 side (arrow B side in FIG. 4), the inclination direction of the left foot roller skate 100a changes, and the grounding of the front tire 55 to the road surface D is released. Thus, the rear tire 51 is grounded to the road surface D.

  As described above, the ground contact is switched from the front tire 55 to the rear tire 51 by the movement of the center of gravity position, and the front tire 55 does not rotate in the same direction as the rear tire 51, so that the center tire 60 side is changed to the front tire 55 side. When the rear tire 51 is grounded while the left foot roller skate 100a is moving, a braking force is applied to the left foot roller skate 100a. Therefore, the movement of the left foot roller skate 100a is stopped, and the movement of the center of gravity of the user with respect to the left foot roller skate 100a is stopped.

  As a result, even if the balance is likely to be lost due to the movement of the roller skate 100a for the left foot, the balance will not be lost any further, and the risk of the user falling over when the balance is lost is reduced. Can do.

  In addition, since the center of gravity of the user is located between the rear tire 51 and the center tire 60, the center tire 60 side to the rear tire 51 side against the user's intention when the rear tire 51 and the center tire 60 are grounded. Even when the left foot roller skate 100a moves toward the rear, the rear tire 51 is grounded in the same manner as the front tire 55 described above, so that it is possible to reduce the risk of the user falling over when the balance is lost.

  In the roller skate 100 according to the first embodiment, the rotation centers of the plurality of center tires 60 serving as fulcrums for changing the inclination direction of the left foot roller skate 100a are arranged on the same line. The rear tire 51 and the front tire 55 that are grounded are switched when the position of the center of gravity crosses only one straight line.

  Therefore, the configuration in which the rotation centers of the plurality of center tires 60 are arranged on different lines makes it difficult for the user to lose balance without separating the position of the left foot roller skate 100a from the position of the user's center of gravity. The risk of falling is reduced.

  The right foot roller skate 100b also has the same configuration except for the left foot roller skate 100a and the mounting devices 10a and 10b, and thus has the same effect.

  Next, a second embodiment will be described with reference to FIG. FIG. 5 is a bottom view of the left foot roller skate 200a constituting the roller skate 200 in the second embodiment, and corresponds to the bottom view of the left foot roller skate 100a in FIG. 5 indicates the front side of the left foot roller skate 200a, the arrow B indicates the rear side of the left foot roller skate 200a, and the arrows C and D indicate the width direction of the left foot roller skate 200a. ing. In order to facilitate understanding, the brake 70a is omitted and shown, and in addition, the contour 91 of the sole of the foot when the left foot roller skate 200a is mounted on the user's foot 90 is shown by a two-dot chain line. Is shown.

  In the first embodiment (see FIG. 2), two front tires 55 and two rear tires 51 are provided in the width direction of the left foot roller skate 100a (the arrow CD direction in FIG. 2). In the embodiment, one front tire 255 and one rear tire 251 are provided, the front tire 55 is disposed at the site of the base 20 on the thumb side in the width direction of the left foot roller skate 200a, and the rear tire 51 is used for the left foot. The roller skate 200a is disposed at the center of the base 20 in the width direction. In addition, the same code | symbol is attached | subjected to the part same as said each embodiment, and the description is abbreviate | omitted.

  The left foot roller skate 200a includes a rear tire 251 disposed on the center line K in the width direction of the base 20 (arrow CD direction in FIG. 5) on the heel side of the user's foot, and a base on the toe side of the user's foot. And a front tire 255 disposed on the thumb side (arrow C side in FIG. 5) of the user's foot from the center line K in the width direction 20 (arrow CD direction in FIG. 5).

  Therefore, when the left foot roller skate 200a is kicked out, the weight applied to the thumb of the toe is accurately applied to the front tire 255. In addition, when braking using the rear tire 251, the weight applied to the heel of the foot is accurately applied to the rear tire 251. Therefore, it is difficult for the user to lose balance, and the risk of falling is reduced. The right foot roller skate 200b also has the same configuration except for the left foot roller skate 200a and the mounting tools 10a and 10b, and thus has the same effect.

  Next, a third embodiment will be described with reference to FIG. 6 is a side view of the left foot roller skate 300a constituting the roller skate 300 in the third embodiment, and corresponds to the side view of the left foot roller skate 100a in FIG. 6 indicates the front of the left foot roller skate 300a, and the arrow B indicates the rear of the left foot roller skate 300a. 6 indicates a rotation direction when the rear tire 51 rolls on the road surface D in the B direction, and an arrow F indicates a rotation direction when the front tire 55 rolls on the road surface D in the A direction. Is shown.

  In the first embodiment (see FIG. 2), the rear tire 51 and the front tire 55 are each supported by the standard bracket 31. However, in the third embodiment, the rear tire 51 is supported by the heel side high bracket 331. The mounting device 10a on which the common tangent located on the road surface D side of the two common tangents that are in contact with both the outer periphery of the rear tire 51 and the outer periphery of the center tire 60 is mounted. It is comprised so that it may be located in parallel with the mounting surface 13a which is the upper surface of the part 11a. In addition, the same code | symbol is attached | subjected to the part same as said each embodiment, and the description is abbreviate | omitted.

  The left foot roller skate 300 a includes a heel side high bracket 331. The heel side high bracket 331 is configured to have the same height dimension value (vertical direction dimension value in FIG. 6) as the high bracket 36 and is farthest from the base 20 on the outer periphery of the center tire 60 pivotally supported by the high bracket 36a. The rear tire 51 is pivotally supported so that the distance to the position (vertical direction in FIG. 6) and the distance to the position farthest from the base 20 on the outer periphery of the rear tire 51 are equal.

  Therefore, when the user maintains an upright state, the placement surface 13a is horizontally disposed, and the center tire 60 and the rear tire 51 are grounded to the road surface D. Therefore, the left foot roller in a state where the user is upright The skate 300a can be prevented from moving forward.

  In particular, when the user is standing upright, the user's upright center of gravity is located on the heel side, and the user's center of gravity is located behind the left foot roller skate 300a (in the direction of arrow B in FIG. 6). When moving to, the user easily loses balance.

  Therefore, the rear tire 51 is grounded in an upright state, the movement of the roller skate to the front (arrow A direction in FIG. 6) is restricted, and the position of the center of gravity of the user moves to the rear of the roller skate (arrow B direction in FIG. 6). Therefore, the frequency with which the user loses balance can be reduced, and the risk of falling can be reduced.

  Next, a fourth embodiment will be described with reference to FIG. FIG. 7 is a side view of the left foot roller skate 400a constituting the roller skate 400 in the fourth embodiment, and corresponds to the side view of the left foot roller skate 100a in FIG. 7 indicates the front of the left foot roller skate 400a, and the arrow B indicates the rear of the left foot roller skate 400a. 7 indicates the rotation direction when the rear tire 51 rolls on the road surface D in the B direction, and the arrow F indicates the rotation direction when the front tire 55 rolls on the road surface D in the A direction. Is shown.

  In the first embodiment (see FIG. 2), one center tire 60 is provided in the front-rear direction (arrow AB direction in FIG. 7). However, in the fourth embodiment, the center tire 60 is disposed in the front-rear direction (FIG. 7). A plurality (two in the fourth embodiment) are provided in the direction of arrow AB. In addition, the same code | symbol is attached | subjected to the part same as said each embodiment, and the description is abbreviate | omitted.

  The left foot roller skate 400a includes a plurality of center tires 60 (in the fourth embodiment, disposed between the rear tire 51 and the front tire 55 in the front-rear direction (arrow AB direction in FIG. 7) via a high bracket 436. 2).

  Therefore, when the user's center of gravity is located between a plurality of (two in the fourth embodiment) center tires 60 disposed in the front-rear direction (the arrow AB direction in FIG. 7), the ratchet mechanism 40 is used. Neither the rear tire 51 nor the front tire 55 whose rotation is restricted by the ground contact with the road surface D. Therefore, since it is possible to prevent the occurrence of rotational resistance generated by the ratchet mechanism 40, the left foot roller skate 400a can be advanced with a small kicking force because no rotational resistance is generated. Therefore, user fatigue can be reduced. The right foot roller skate 400b has the same configuration except for the left foot roller skate 400a and the wearing tools 10a and 10b, and thus has the same effect.

  Next, a fifth embodiment will be described with reference to FIGS. FIG. 8 is a side view of the left foot roller skate 500a constituting the roller skate 500 in the fifth embodiment, and corresponds to the side view of the left foot roller skate 100a in FIG. FIG. 9A is a side view showing the side surfaces of the ratchet mechanism 540 and the rear tire 551 assembled to the left foot roller skate 500a, and corresponds to the view in the vertical direction of FIG. FIG. 9B is a rear side view showing a side surface of the ratchet mechanism 540 and the rear tire 551 assembled to the left foot roller skate 500a from the rear side (the arrow B side in FIG. 8) of the left foot roller skate 500a.

  8 and 9 indicate the front of the left foot roller skate 500a, and the arrow B indicates the rear of the left foot roller skate 500a. 9 indicates the rotation direction when the rear tire 551 rolls on the road surface D in the B direction, and the arrow F indicates the rotation direction when the rear tire 551 rolls on the road surface D in the A direction. Show. Also, arrows C and D shown in FIG. 9B indicate the width direction of the left foot roller skate 500a.

  In the first embodiment (see FIG. 2), a single center tire 60 is provided in the front-rear direction (the arrow AB direction in FIG. 2), and claw fitting grooves 52 are provided on the outer peripheral surfaces of the rear tire 51 and the front tire 55. However, in the fifth embodiment, as in the fourth embodiment, a plurality of center tires 60 (two in the fifth embodiment) are provided in the front-rear direction (the arrow AB direction in FIG. 8), and the claws are fitted. The groove 545 is configured as a member different from the rear tire 551 and the front tire 555. In addition, the same code | symbol is attached | subjected to the part same as said each embodiment, and the description is abbreviate | omitted.

  As shown in FIG. 8, the left foot roller skate 500 a includes a ratchet mechanism 540 that regulates the rotation direction of the rear tire 551 and the front tire 555. The ratchet mechanism 540 is pivotally supported by the standard bracket 31 and is fitted into the rear tire 551 and the front tire 555, respectively. The ratchet mechanism 540 fitted in the front tire 555 is the same as the ratchet mechanism 540 fitted in the rear tire 551 with the mounting direction reversed to the front-rear direction of the left foot roller skate 500a. Since it is the structure of this, description is abbreviate | omitted.

  As shown in FIGS. 9A and 9B, the ratchet mechanism 540 fitted into the rear tire 551 includes a ratchet case 541 and a ratchet hub 542 fitted into the ratchet case 541. .

  As shown in FIG. 9A, a ratchet case 541 includes an outer cylinder 543 configured in a cylindrical shape, and a ratchet plate 544 configured in a radial direction from the outer peripheral surface of the outer cylinder 543 and configured in a flat plate shape. It has. A through hole is formed at the tip of the ratchet plate 544, and a ratchet shaft 43 that is pivotally attached to the second connecting shaft 73 is axially attached to the through hole. A claw fitting groove 545 is formed on the inner peripheral surface of the outer cylinder 543.

  In this way, the claw fitting groove 545 is formed on the inner peripheral surface of the outer cylinder 543, and therefore, compared with the configuration in which the claw fitting groove 52 is provided on the outer peripheral surface of the rear tire 51, the biting of foreign matter on the road surface. Can be prevented.

  The ratchet hub 542 includes a ratchet claw 546 at a portion facing the claw fitting groove 545. The ratchet claw 546 is supported by the shaft 547 and is urged by the coil spring 548 to the claw fitting groove 545. ing.

  The claw fitting groove 545 includes a slope with a gentle slope and a slope with a steep slope. When the ratchet hub 542 rotates in the direction of the arrow R, the ratchet claw 546 rotates gently in the direction of the arrow R. It moves up and is fitted into the adjacent claw fitting groove 545. When the ratchet hub 542 rotates in the direction of arrow F, the ratchet pawl 546 is locked by a steeply inclined slope.

  Therefore, the ratchet hub 542 can rotate in the arrow R direction with respect to the ratchet case 541, but cannot rotate in the arrow F direction. Further, a rear tire 551 is press-fitted to the outer periphery of the ratchet hub 542, and the rear tire 551 can rotate in the arrow R direction with respect to the ratchet case 541 in the same manner as the ratchet hub 542, but in the arrow F direction. Can not rotate.

  Therefore, when the left foot roller skate 500a is moving forward (in the direction of arrow A in FIG. 9), if the rear tire 551 is grounded on the road surface D and rotated in the direction of arrow F, the ratchet hub 542 passes through the ratchet hub 542. The ratchet case 541 is rotated in the direction of arrow F. As a result, the ratchet shaft 43 pivotally attached to the ratchet case 541 moves in the ratchet shaft guide 43 from the arrow B direction side to the arrow A direction side. Therefore, the brake 70 connected to the ratchet shaft 43 can be operated to generate a braking force on the center tire 60.

  Further, when the left foot roller skate 500a is moving rearward (in the direction of arrow A in FIG. 9), the front tire 555 is grounded to the road surface D, so that the brake 70 is operated in the same manner as the rear tire 551. A braking force can be generated in the tire 60.

  The right foot roller skate 500b has the same configuration except for the left foot roller skate 500a and the wearing tools 10a and 10b, and thus has the same effect.

  Although the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. Can be easily guessed.

  For example, the numerical values (for example, the quantity, size, angle, etc. of each component) given in the above embodiments are examples, and other numerical values can naturally be adopted.

  Although 1st Embodiment demonstrated the case where the tire 50 was comprised with the same diameter, it may not necessarily restrict to this, You may comprise with a different diameter. In this case, by making the diameter of the center tire 60 larger than the diameters of the rear tire 51 and the front tire 55, the dimension value in the height direction (the vertical direction in FIG. 1) of the standard bracket 31 and the high bracket 36 may be the same. Since the center tire 60 has a large direct shape, the ground contact with the road surface D of the rear tire 51 and the front tire 55 can be switched with the center tire 60 as a fulcrum. Therefore, the shapes of the standard bracket 31 and the high bracket 36 can be brought close to the same shape, and the manufacturing process can be easily shared. Therefore, the manufacturing cost of the roller skate 100 can be reduced.

  In the first embodiment, the case where the roller skate 100 is mounted on the user's foot 90 has been described. However, the present invention is not necessarily limited to this, and the roller skate 100 may be used as a moving device for a robot that moves independently. . In this case, since it becomes easy to balance the robot, the system for balancing can be simplified in the robot control system. Therefore, the product cost of the robot can be reduced and the weight of the robot can be reduced. Note that the robots described above include robots that are worn and functioned by humans.

It is the side view which showed the side surface of the roller skate for left legs in 1st Embodiment of this invention. It is the bottom view which showed the bottom face of the roller skate for left legs. (A) is the side view which showed the side surface of a center tire and a high bracket, (b) is the side view which showed the side surface of a rear tire and a standard bracket. (C) is a bottom view showing the bottom surfaces of the center tire and the high bracket, and (d) is a bottom view showing the bottom surfaces of the rear tire and the standard bracket. It is the state transition diagram which showed the transition of the state which is sliding using roller skates, (a) is the stop state diagram which showed the state which has stopped, (b) is accelerated from a stop. (C) is a constant speed state diagram showing a state where the vehicle is moving without acceleration, and (d) is a state where the vehicle is further accelerated. (E) is a first braking state diagram showing a state of braking, and (f) shows a state of braking with a posture different from (e). FIG. 6 is a second braking state diagram. It is a bottom view of the roller skate for left feet which constitutes roller skate in a 2nd embodiment. It is a side view of the roller skate for left feet which constitutes roller skate in a 3rd embodiment. It is a side view of the roller skate for left legs which constitutes roller skate in a 4th embodiment. It is a side view of the roller skate for left feet which comprises the roller skate in 5th Embodiment. (A) is the side view which showed the ratchet mechanism 5 assembled | attached to the roller skate for left legs, and the side surface of a rear tire. (B) is the rear side view which showed the side surface from the back side (FIG. 8 arrow B side) of the ratchet mechanism and rear tire which were assembled | attached to the roller skate for left legs, and the rear tire.

Explanation of symbols

100, 200, 300, 400, 500 Roller skate 100a, 200a, 300a, 400a, 500a Roller skate for left foot 100b, 200b, 300b, 400b, 500b Roller skate 10a, 10b for right foot
20a, 20b base (base member)
30, 330 Bracket part (support member)
31 Standard bracket (part of support member)
331 High-heel bracket (part of support member)
34 Ratchet shaft guide (part of support member, part of connecting means)
36,436 High bracket (part of support member)
40,540 Ratchet mechanism (part of rotation regulating device)
41,545 Ratchet claw (claw member, part of connecting means)
42 tire shaft 43 ratchet shaft (part of output shaft, part of connecting means)
44,548 Ratchet spring (claw elastic member, part of connecting means)
45 Ratchet plate (part of connecting means)
46 Buffer spring (biasing member)
47 Spring stopper (part of connecting means)
48 Support shaft (part of connecting member)
50,250 tires (rolling elements)
51,251,551 Rear tire (regulated rolling element, claw wheel part)
52 Claw fitting groove (tooth surface, part of connecting means)
55, 255, 555 Front tire (regulated rolling element, claw wheel part)
60, 260, 460 Center tire (free rolling element)
71 Brake pad (stop member)
72 1st connecting shaft (part of connecting member)
73 Second connecting shaft (part of connecting member)
541 Ratchet case (part of output shaft)
542 Ratchet hub (input shaft)
D Road surface N Road surface tangent SC, S1, S2 Center of rotation

Claims (8)

A rolling element that rolls on the road surface, a support member that rotatably supports the rolling element, a base member that is provided on the bottom surface side, and a user member that is provided on the upper surface side of the base member. A rolling member, and the rolling element includes a pair of regulating rolling elements disposed on the base member via the support member, and one regulating rolling element of the pair of regulating rolling elements. Of the two common tangents that are in contact with both the outer periphery of the moving body and the outer periphery of the other restricting rolling element, the common tangent located on the road surface side protrudes from the common tangent line, and the In a roller skate comprising a base member and a free rolling element disposed via the support member,
A rotation restriction device that allows rotation in one rotation direction of the restriction rolling element and restricts rotation in another rotation direction that is opposite to the one rotation direction;
The roller skate characterized in that the one rotation direction is a rotation direction when the regulation rolling element rolls on the road surface in a direction away from the free rolling element. One regulation rolling element of the pair of regulation rolling elements is disposed at one end of the base member on the heel side of the foot in a state where the user's foot is mounted on the mounting member,
The other regulation rolling element of the pair of regulation rolling elements is disposed at the other end of the base member which is the toe side of the foot,
The roller skate according to claim 1, wherein the free rolling element is disposed closer to the one restricting rolling element than the other restricting rolling element. The rolling element includes a plurality of the free rolling elements,
3. The roller skate according to claim 1, wherein the plurality of free rolling elements are disposed via the support member with the rotation centers of the plurality of free rolling elements being positioned on the same line. The rotation regulating device is
A claw wheel portion having a tooth profile surface formed in a serrated shape on the outer periphery,
A claw member that moves between a position fitted to the tooth profile surface of the claw wheel portion and a position separated from the tooth profile surface of the claw wheel portion;
A claw elastic member for biasing the claw member to a position where it is fitted to the tooth profile surface of the claw wheel portion;
The tooth profile surface is formed on the outer periphery of the rolling element,
When the claw wheel portion rotates in the one rotation direction, the rotation is continued by alternately moving a position where the claw member is fitted along the tooth profile surface and a position separated from the claw wheel portion. When the claw wheel portion rotates in the other rotation direction, the claw member stops at a position where the claw member is fitted, so that the rotation of the claw wheel portion is stopped and the rotation direction of the claw wheel portion is the one rotation direction. The roller skate according to any one of claims 1 to 3, wherein the roller skate is configured to be regulated by the above. The rotation regulating device is
An output section;
Connection means for connecting the output portion to the base member or the support member;
An input unit connected to the restriction rolling element and allowed to rotate in the one rotation direction with respect to the output unit and restricted in rotation in the other rotation direction;
A biasing member that biases the output portion in the one rotation direction;
The connection means connects the output unit to the base member or the support member so as to be movable within a predetermined range.
When the restricting rolling element is rotated in the other rotational direction, the input unit is integrated with the output unit, the output unit is moved in the other rotational direction, and a reaction force against the rotational force of the output unit is generated. 5. The roller skate according to claim 1, wherein the roller skate is configured to be generated by the biasing member in accordance with a movement amount of the output portion with respect to the base member or the support member. A stop member that reciprocates between a contact position that contacts the free rolling element and a separated position that is a predetermined distance away from the free rolling element;
A connecting member for connecting the stop member to the output unit,
When the output unit is moved in the one rotation direction, the stop member is moved via the connecting member, and the stop member is disposed at the separation position,
When the output unit is moved in the other rotation direction, the stop member is moved through the connecting member, and the stop member is arranged at the contact position and pressed against the free rolling element, 6. A roller skate according to claim 5, wherein the free rolling element is configured to apply a braking force.   The mounting member on which the user's foot is placed on a common tangent located on the road surface side of two common tangents that are in contact with both the outer periphery of the one restricting rolling element and the outer periphery of the free rolling element The roller skate according to claim 2, wherein the one regulating rolling element is disposed via the support member so as to be positioned in parallel with the mounting surface. The other restricting rolling element is arranged via the support member on the base member that is on the thumb side in the width direction of the user's foot when the user's foot is mounted on the mounting member. Established,
3. The roller skate according to claim 2, wherein when the user puts weight on the thumb side, the weight is applied to the other restricting rolling element.

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