JP5657449B2 - Playground equipment - Google Patents

Description

  The present invention relates to a playground equipment installed in a park or the like.

  Seesaw is one of the playground equipment that can be moved by human power. In general, a seesaw is provided with a seat and a grip at both ends of a long plate that is swingably supported by a fulcrum at the center, and straddles each seat with the grip held. It is a playground equipment that can enjoy vertical movement by kicking the ground alternately.

  On the other hand, the seesaw described in Patent Document 1 includes a parallel four-bar link composed of two horizontal nodes arranged in parallel vertically and two vertical nodes arranged vertically on the left and right, and two horizontal nodes. And a support that rotatably supports the central part of the node. A seat is provided in each of the left and right vertical nodes.

Japanese Utility Model Publication No. 63-130094

  However, since the conventional seesaw including the seesaw described above has a simple structure, the movement is relatively monotonous and easily bored. In addition, in order to play well on a seesaw, it is necessary to use it with people of similar weight, such as children of similar physique. Conversely, if there are not multiple children of similar weight, you cannot play with a seesaw. For example, it is difficult to play a seesaw between two persons with different weights, such as two parents. Even if you play seesaw with such a parent and child, it is not necessarily attractive to children because only the heavy weight parent will take the lead in the movement of the seesaw.

  This invention is made | formed in view of such a problem, and it aims at providing the seesaw type playground equipment which a passenger | crew's movement is more dynamic and can enjoy also between persons with a weight difference.

  In order to achieve the above object, a playground equipment according to the present invention includes an arm member rotatably supported by a support via a pivot. The arm member includes: an arm portion extending on both sides with the pivot shaft interposed therebetween; a seat allocated to the arm portions on both sides with the pivot shaft sandwiched; and a seat stabilization mechanism that maintains the orientation of the seat surface of the seat constant. And the position of the pivot is a position away from an intermediate position of the arm member.

  In the play equipment according to the present invention, the pivot is arranged at a position different from the intermediate position of the arm member. In other words, the distance from the pivot to the seat on each side is different. With this structure, even if there are two parents with different weights, it is relatively easy for a heavier parent to sit in a seat near the pivot and a lighter child to sit in a seat far from the pivot. The left and right arm members can be balanced. That is, the seesaw operation can be enjoyed by the parent and child in an equal relationship.

  In this playground equipment, the child's seat is located farther from the pivot than the parent's seat, and the range of raising and lowering the child's seat is increased accordingly. That is, it is structured to rise to a position higher than the parent seat. In this way, the structure in which the child's seat is raised to a higher position can give the child a greater thrill and is more attractive to the child.

  By the way, in a seesaw type playground equipment, an occupant sits in a face-to-face state and rises alternately. Therefore, in the conventional seesaw type playground equipment, one occupant can predict his / her rising position based on the rising position of the other occupant. However, in the playground equipment according to the present invention, even if the child predicts his / her own rising position based on the parent's rising position, the child rises further than the predicted position. As described above, the playground equipment according to the present invention is more attractive to the child because it gives the child a greater thrill by making a movement that betrays the prediction of the child.

  The playground equipment according to the present invention includes a seat stabilization mechanism that maintains the orientation of the seating surface of the seat constant. Therefore, the seat surface of the seat does not tilt as the seat rises, and the child sitting on the seat can be raised in a more stable state.

  Although it is a playground equipment having such an attraction, such an attraction cannot be brought out when playing with persons having no weight difference. Considering this point, a playground equipment having the following structure is preferable.

  In other words, the connection position of the one-side seat that is distributed and connected to the arm member is a line obtained by connecting the axis of the pivot of the arm member and the connection position of the other-side seat to the arm member. The arm member has a plurality of seat fixing positions on at least one of the both arm portions.

  Thus, if one (or both) arm part of an arm member is provided with a some seat fixing position, a seat can be arranged in a plurality of places of an arm part as needed. If one (or both) arm portions have a plurality of seats, a seat on which an occupant sits can be selected, and the left and right arm members can be more easily balanced by seat selection. If the left and right arm members can be balanced, the passengers on both sides sitting across the pivot can enjoy seesaw operation in an equal relationship.

  In addition, as a play equipment in which the seat on one side is positioned vertically above the plane including the axis of the pivot and the line segment, for example, the left and right arm portions constituting the arm member are reversely shaped (V (Character shape) can be cited (see FIG. 3A). With such a configuration, even if the distance from the pivot to the both seats remains the same, the raised position of the other seat when the one seat is lowered is higher. That is, the rising height of the child's seat becomes higher, and a greater thrill can be given to the child. As a result, a more attractive playground equipment can be realized.

  In addition, as an arm part provided with a some seat fixing position, the arm part of various structures can be mentioned. For example, the arm part is provided with a plurality of seat installation positions, and a plurality of seats can be installed at the same time. In addition, a seat that is provided so as to be slidable along the longitudinal direction of the arm portion, and that can be moved and fixed to a plurality of seat fixing positions may be used.

  In addition, another invention according to the present application includes an arm member that is rotatably supported by a support via a pivot. The arm member includes an arm portion extending on both sides of the pivot, a seat that is distributed and arranged on both sides of the pivot, and a seat that can maintain the orientation of the seating surface of the seat constant. And a connecting position of the one-side seat arranged with the arm member to the arm member includes a pivot center of the arm member and a connecting position of the other seat to the arm member. Is located on a vertically lower side than a plane including a line segment obtained by connecting the shaft center, the separation distance between the shaft center and the one side seat, and the separation distance between the shaft center and the other side seat, Both are playground equipment characterized by being shorter than the distance from the said axial center to the floor surface directly under an axial center.

  The arm member of the playground equipment according to the present invention includes left and right arm portions bent in a U-shape (inverted V-shape), and can be referred to as a “frozen shape”. If the arm member has such a structure, the arm member can be balanced at a balance position corresponding to the weight difference regardless of the weight difference between the two passengers. That is, a stable seesaw operation can be realized even between persons having any weight difference.

  In this playground equipment, both the distance between the shaft center and the seat on one side and the distance between the shaft center and the other seat are shorter than the distance from the axis of the pivot to the floor immediately below the pivot. It has become. With such a configuration, the seats on both sides can be positioned directly below the pivot, and can be swung within a wider swing range (lift range). When the seat is positioned directly below the pivot (the lowest position), the person sitting on the seat can kick the floor to enjoy the seesaw operation.

  In addition, as a seat stabilization mechanism used with this playground equipment, there exist various things, such as the thing of the simple mechanism using gravity, For example, the following is preferable.

  In other words, the seat stabilization mechanism includes a one-side seat pivot that pivotally supports the one-side seat with respect to one arm portion, and an other-side seat pivot that pivotally supports the other-side seat with respect to the other arm portion. A central disk member coaxially disposed on the pivot and fixed to the support column, and coaxially and rotatably supported on the one-side seat pivot and moves in synchronization with the one-side seat. Winding around the one side disk member, the other side disk member that is coaxially and rotatably supported on the other side seat pivot and moves in synchronization with the one side seat, the central disk member, and the one side disk member One cord-like member rotated, and the other cord-like member wound around the central disc member and the other disc member, the central disc member, the one disc member and the other disc The member has the same diameter of the winding part around which the cord-like member is wound. In is what is preferred.

  By using the seat stabilization mechanism having such a structure, the orientation of the seating surfaces of the seats arranged on both sides of the pivot can be kept constant, and the person sitting on the seat can be raised and lowered in a stable state. it can.

  The disk member referred to here is a rotating body used for input / output of rotational power, and examples thereof include a pulley around which a wire and a belt are wound, and a sprocket around which a chain is wound. .

  Moreover, the cord-like member here is a member for power transmission used for transmission of power entering and exiting the disk member. For example, a wire wound around a pulley, a chain wound around a sprocket And so on.

  In addition, the play equipment according to the present invention further includes a braking means for stopping the swinging of the arm member, and an operation portion of the braking means is disposed at a position where it can be operated by an occupant sitting on the seat. But you can.

  If there is a braking means, the swinging arm member can be stopped at an arbitrary swinging position. Therefore, the seat where the child is sitting can be stopped at the highest point, or can be stopped at a position that the child has not predicted. If this can be done, the child can be given a greater thrill and is more attractive to the child.

  In addition, the play equipment according to the present invention may further include a vibration means for swinging the arm member, and the operation portion of the vibration means may be disposed at a position where it can be operated by a passenger sitting on the seat. Good.

  If there is a vibration means, the swing of the arm member can be made larger. Therefore, the seat can be raised to a higher position, the maximum speed during swinging can be increased, and the swinging state can be continued for a longer period. This can be more attractive to the child because it can give the child a greater thrill.

  In addition, the play equipment according to the present invention may further include a rotation mechanism that supports the support column rotatably about the vertical axis. With such a rotation mechanism, the passenger sitting on the seat can be rotated while being swung, and a greater thrill can be given to the passenger.

  The swinging occupant moves close to and away from the rotation center position of the rotation mechanism. Accordingly, the occupant rotating while being swung receives Coriolis force (force in a direction perpendicular to the swiveling direction). This Coriolis force is a force that is not received by a conventional seesaw, and the occupant of the play equipment according to the present invention feels that an unexpected force has been received. By giving such an unexpected force, a greater thrill can be given to the occupant. In addition, since the passenger | crew who got on the toy | playing_tool of this invention receives the inertial force in a rotation coordinate system, it receives the centrifugal force which goes outside from a rotation center other than a Coriolis force.

  Furthermore, the moment of inertia of the arm member of the play equipment changes as it swings. Therefore, under the condition that the angular momentum of the rotating playground equipment is preserved, the angular velocity (the number of rotations per unit time) of the playground equipment changes depending on the swing position of the arm member. In other words, the angular velocity decreases as the arm member approaches horizontal, and the angular velocity increases as it approaches vertical. The playground equipment according to the present invention can give a greater thrill to the occupant by giving such an unpredictable change to the occupant.

  According to the play equipment of the present invention, the child's seat can be raised to a higher position, so that a greater thrill can be given to the child. Therefore, the playground equipment is very attractive for children.

(A) is a perspective view which shows the playground equipment as 1st Embodiment of this invention, (B) is a front view. (A) (B) is a perspective view which shows the playground equipment as 2nd Embodiment of this invention. (A) (B) is a front view which shows the playground equipment as 2nd Embodiment of this invention. (A) (B) is a front view for demonstrating operation | movement of the playground equipment as 2nd Embodiment of this invention. (A) (B) is a front view which shows the other example of the play equipment as 2nd Embodiment of this invention. It is sectional drawing which shows CC cross section of FIG. 3 (A). (A) (B) is a perspective view which shows the playground equipment as 3rd Embodiment of this invention. (A) (B) is a front view which shows the playground equipment as 3rd Embodiment of this invention. It is a front view which shows the other example of the playground equipment as 3rd Embodiment of this invention. (A) is a front view which shows the playground equipment as 4th Embodiment of this invention, (B) is a top view. (A) (B) is a front view for demonstrating operation | movement of the playground equipment as 4th Embodiment of this invention. (A) is a perspective view which shows the playground equipment as 5th Embodiment of this invention, (B) is a front view. (A) (B) is a front view for demonstrating operation | movement of the playground equipment as 5th Embodiment of this invention. It is a perspective view which shows the state which installed the playground equipment as 3rd Embodiment of this invention on a turntable.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the components described in the following embodiments are merely examples, and are not intended to limit the technical scope of the present invention only to them.

(First embodiment)
As shown in FIG. 1, the play equipment 10 includes a support 11 fixed at a play equipment installation position, and an arm unit (arm member) 20 that is rotatably supported by a distal end portion of the support 11 via a pivot 12. It is a seesaw.

  The arm unit 20 includes a four-bar link composed of two horizontal arms 21a and 21b extending in the horizontal direction and two vertical arms 21c and 21d extending in the vertical direction, and each vertical arm 21c, Seats 22a and 22b attached to 21d and occupant gripping bars 23a and 23b gripped by occupants sitting across the seats 22a and 22b are provided. Each vertical arm 21c, 21d is an L-shaped member provided with a seat surface support 21s extending outward in the arm extending direction, and seats 22a, 22b are installed on the seat surface support 21s. That is, both seats 22a and 22b are distributed and arranged on the respective arm portions 20a and 20b extending on both sides with the pivot 12 interposed therebetween. And bar 23a, 23b is attached to the both ends of the upper horizontal arm 21a arrange | positioned above among the two horizontal arms 21a, 21b.

  The four-bar link is a parallel four-bar link (seat stabilizing mechanism) in which the two horizontal arms 21a and 21b and the two vertical arms 21c and 21d are always parallel to each other. Therefore, the orientation of the seating surfaces of the seats 22a and 22b attached to the vertical arms 21c and 21d is always maintained in a constant orientation (the seating surface of the present embodiment is horizontal). Thus, since the orientation of the seating surface is constant, a sense of stability can be given to the occupant sitting on the seats 22a and 22b. Of the four-bar link, the two horizontal arms 21a and 21b are supported by the column 11 via the pivot 12 at a position away from the intermediate position 21p. Specifically, the two horizontal arms 21a and 21b are both pivotally supported at a position farther from the first seat 22a than the intermediate position 21p (see FIG. 1B).

  The play equipment having such a structure is suitable for use by persons having a weight difference such as a parent and child. In other words, the light weight child sits in the first seat 22 a far from the pivot 12 and the parent sits in the second seat 22 b near the pivot 12, so that the arm unit 20 can be easily left-right balanced. If left and right balance is achieved, even people with different weights can kick the ground alternately and play a seesaw in an equal relationship.

  Further, in the play equipment 10, since the shaft support positions of the lateral arms 21a and 21b are biased toward the second seat 22b, the play equipment 10 is more than the most elevated position of the second seat 22b (see the solid line state in FIG. 1B). The highest position of one seat 22a (see the state of the two-dot chain line in FIG. 1B) is higher. In other words, the seat on which a child with a light weight sits rises to a higher position that has a wide lifting range and cannot be predicted. Therefore, the playground equipment 10 is a playground equipment that can give a greater thrill to a lighter child or the like, and is a more attractive playground equipment for the child.

(Second Embodiment)
Next, a playground equipment 30 as a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same member as the said play equipment 10, and the description is abbreviate | omitted.

  As shown in FIG. 2, the play equipment 30 includes a support column 11 and an arm unit 20 that is rotatably supported by a tip end portion of the support column 11 via a pivot shaft 12. The arm unit 20 includes left and right arm portions 20a and 20b extending on both sides with the pivot 12 interposed therebetween.

  Of the two arms 20a and 20b, the first arm 20a shown on the right side in FIG. 2 includes two upper and lower first horizontal arms 31a and 32a pivotally supported by the column 11 at one end, and both first horizontal arms. And a first vertical arm 33a for connecting the other ends of 31a and 32a. The arms 31a, 32a, 33a and the support column 11 constitute a parallel four-bar link (seat stabilizing mechanism). Further, the first arm portion 20a includes a first seat 34a attached to the first vertical arm 33a and a first bar 35a for gripping an occupant. The first vertical arm 33a is an L-shaped member provided with a seating surface support 33s like the vertical arms 21c and 21d of the play equipment 10, and the first seat 34a is fixed to the seating surface support 33s. .

  On the other hand, the second arm portion 20b shown on the left side in FIG. 2 has two upper and lower second horizontal arms 31b and 32b pivotally supported by the support 11 at one end, and the other ends of both the second horizontal arms 31b and 32b. Are connected to each other by a second vertical arm 33b and two second horizontal arms 31b. And a seat member 40 supported by 32b. The second horizontal arms 31b and 32b, the second vertical arm 33b, and the support column 11 constitute a parallel four-bar link (seat stabilizing mechanism).

  The upper second horizontal arm 31b disposed on the upper side of the two second horizontal arms 31b and 32b is integral with the lower first horizontal arm 32a. Accordingly, the first arm portion 20a and the second arm portion 20b always swing with respect to the column 11 as an integral member. In this embodiment, the axis that pivotally supports the upper second lateral arm 31b and the lower first lateral arm 32a that are integral with each other is the pivot 12.

  Further, the upper second horizontal arm 31b and the lower first horizontal arm 32a are bent in a reverse U-shape (V-shape) with the pivot 12 as a bending point. In other words, the connecting position of the second seat 34b with the arm unit 20 is the axial center of the pivot 12 and the connecting position 33p with the lower first lateral arm 32a (arm unit 20) of the first seat 34a. It is located vertically above the plane P1 (see FIG. 3A) including the line segment obtained by connection. Therefore, each seat 34a, 34b can be raised to a higher position than when the arm unit is not bent.

  In addition, it can be said that the connection position of the second seat 34b with the arm unit 20 is, in other words, the connection position with the second horizontal arms 31b and 32b of the seat member 40 described later. This position is a position of sliders 42a and 42b of the seat member 40 described later.

  Further, the first arm portion 20a of the arm unit 20 is longer than the second arm portion 20b. In other words, the position of the pivot 12 is a position away from the intermediate position 20p of the arm unit 20 (see FIG. 3A). Therefore, the first seat 34a has a wide lifting range and rises to a position higher than the second seat 34b (see FIG. 4).

  Thus, in the playground equipment 30, both the seats 34a and 34b, in particular, the first seat 34a suitable as a seat for a person with a light weight can be raised to a high position, and a great thrill can be given to a child with a light weight. it can.

  Each of the second horizontal arms 31b and 32b of the second arm portion 20b is composed of a pair of U-shaped guide rails 45a and 45b (see FIG. 6). The pair of guide rails 45a and 45a (45b and 45b) are arranged with the opening portions of the guide rails facing each other, and guide sliders 42a and 42b of the seat member 40 described later.

  The seat member 40 includes a seat support 41 sandwiched between a pair of guide rails 45a and 45a (45b and 45b), a second seat 34b and a round bar provided integrally with the seat support 41. Two sliders 42a and 42b having a shape are provided. Therefore, also in the playground equipment 30, the seats 34a and 34b are distributed and arranged on the respective arm portions 20a and 20b extending on both sides with the pivot 12 interposed therebetween. For the passenger sitting on the second seat 34b, a second bar for gripping the passenger may be attached to the second seat 34b.

  The upper slider 42a disposed on the upper side of the two sliders 42a and 42b is slidably incorporated in the guide rails 45a and 45a constituting the upper second horizontal arm 31b. The lower slider 42b is incorporated so as to be slidable with respect to the guide rails 45b and 45b constituting the lower second horizontal arm 32b. Further, the distance L1 between the axes of the two sliders 42a and 42b (see FIG. 3) is the same as the distance L2 between the pivotal positions at both ends of the second vertical arm 33b connecting the two second horizontal arms 31b and 32b. . The extending direction of the seat support 41 (the direction of the line connecting the axes of the two sliders 42a and 42b) is always parallel to the second vertical arm 33b. With such a structure, the orientation of the seating surface of the second seat 34b is always maintained constant. That is, the seat member 40 is slidable along the extending direction of the second horizontal arms 31b and 32b while maintaining the parallel state of the seat support 41 and the second vertical arm 33b (see FIG. 3). ). Thus, the two sliders 42a and 42b and the seat support 41 of the seat member 40 constitute a part of the seat stabilization mechanism of the second seat 34b.

  The seat support 41 of the seat member 40 is provided with a clamp mechanism (not shown) that holds the upper second lateral arm 31b. By gripping the upper second arm 31b with this clamp mechanism, the seat member 40 can be fixed at an arbitrary position with respect to the second lateral arms 31b and 32b. That is, the second arm portion 20b has a plurality of seat fixing positions of the second seat 34b, and the second seat 34b can be moved to a plurality of seat fixing positions. Since the clamp mechanism has a well-known structure, a detailed description thereof is omitted here.

  When using such a play equipment 30, first, the position of the second seat 34b is set in consideration of the weight difference between the players who play with the play equipment 30. The position where the second seat 34b is closer to the pivot 12 as the weight difference is larger (see FIGS. 2A and 3A), and the position where the second seat 34b is separated from the pivot 12 as the weight difference is smaller. (See FIGS. 2B and 3B). Thereafter, a lighter person such as a child rides on the first seat 34a, and a heavier person such as a parent rides on the second seat 34b.

  In the present embodiment, the length of the second arm portion 20b is shorter than that of the first arm portion 20a, but it may be equal to or longer than the same length. As described above, when the length of the second arm portion 20b is increased, options for the seat fixing position for fixing the second seat 34b are expanded. Therefore, it is possible to cope with a wider range of weight differences.

  Moreover, as a structure provided with a some seat fixing position, the play equipment 30b of a structure as shown in FIG. 5 is mentioned other than the structure which makes the 2nd seat 34b slide type like the play equipment 30 of 2nd Embodiment, for example. be able to. That is, it is the structure which installs the some 2nd seat 35b, 36b in the 2nd arm part 20b. Here, the second vertical arms 37b and 38b that support the second seats 35b and 36b are rotatably supported by the pins 39b on the second horizontal arms 31b and 32b, and these second vertical arms 37b and 38b are supported. Constitutes part of the seat stabilization mechanism. In addition, the same code | symbol was attached | subjected to the same member as the said play equipment 30, and the description was abbreviate | omitted.

(Third embodiment)
Next, a play equipment 50 as a third embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 7, the play equipment 50 includes a support column 11 fixed at the play equipment installation position, and an arm unit 20 that is rotatably supported via a pivot 12 fixed to a distal end portion of the support column 11. .

  The arm unit 20 includes left and right arm portions 20a and 20b extending from the pivot 12 to both sides, and seats 51a and 51b attached to the tip portions of the arm portions 20a and 20b. The first arm portion 20a and the second arm portion 20b are integral members, and seats 51a and 51b are distributed and arranged on the arm portions 20a and 20b extending on both sides with the pivot 12 interposed therebetween.

  In addition, shaft bodies (seat pivots) 52a and 52b are attached to the distal ends of both arms 20a and 20b in a rotatable state. The direction of the rotation axis of each shaft body 52a, 52b is parallel to the axial direction of the pivot 12.

  And the 1st seat 51a is fixed to the 1st shaft body 52a of the front-end | tip part of the 1st arm part 20a, and the circular 1st handle 53a is coaxially arrange | positioned. Similarly, a second seat 51b is fixed to the second shaft body 52b at the tip of the second arm portion 20b, and a circular second handle 53b is coaxially arranged. Both handles 53a and 53b are fixed to the arm unit 20, and occupant gripping bars 54a and 54b are attached to the first seat 51a and the second seat 51b.

  Further, the arm unit 20 includes a central disk member 55 coaxially fixed to the pivot shaft 12, a first disk member 56a coaxially fixed to the first shaft body 52a, and a second disk coaxially fixed to the second shaft body 52b. And a member 56b. The central disk member 55 is fixed to the column 11. The central disk member 55, the first disk member 56a, and the second disk member 56b are pulleys having the same shape (that is, the same diameter), and include grooves on the outer peripheral portion (winding portion) in which wires 57a and 57b described later are hung. ing.

  The arm unit 20 includes a first wire (cord-like member) 57a wound around the central disk member 55 and the first disk member 56a, and a second wound around the central disk member 55 and the second disk member 56b. And a wire 57b. Each wire 57a, 57b is hung on a corresponding disk member 55, 56a, 56b in a state where a tension is applied.

  Accordingly, when the arm unit 20 swings, the first shaft body 52a and the first seat 51a rotate in synchronization with the relative rotation of the first disk member 56a with respect to the arm unit 20. Since the central disk member 55 and the first disk member 56a have the same diameter, at this time, the first seat 51a rotates in a state where the orientation of the seating surface is maintained in a fixed direction (horizontal in the present embodiment). That is, the first shaft body 52a, the two disk members 55 and 56a, and the first wire 57a constitute a seat stabilization mechanism for the first seat 51a. When the orientation of the seating surface is made constant, a sense of stability can be given to the occupant sitting on the seat.

  The second seat 51b is also supported by the same configuration as the first seat 51a, and swings in a state where the seat surface is oriented in a certain direction when the arm unit swings. Description is omitted.

  As shown in FIG. 8B, the separation distance L3 from the axis of the pivot 12 to the first seat 51a is greater than the vertical separation distance L4 from the axis of the pivot 12 to the floor surface G on which the play equipment 50 is installed. Also short. Therefore, the arm unit 20 can swing to an angle at which the first seat 51a is positioned directly below the pivot. Here, the separation distance L3 is a distance from the axial center of the pivot 12 to the central position 51s of the first seat 51a (see FIG. 7A). Such a configuration is the same for the second seat 51b. With such a configuration, the swing range (elevating range) of the seat is widened, so that the seat can be raised to a higher position, and a greater thrill can be given to the occupant.

  In addition, the first arm portion 20a and the second arm portion 20b are bent in a heft shape (inverted V shape) with the pivot 12 as a bending point. In other words, the connection position (the position of the first shaft body 52a) of the first seat 51a with the arm unit 20 is the connection position (the first position of the pivot 12 and the arm unit 20 supporting the second seat 51b). And the plane P2 including the line segment obtained by connecting the biaxial body 52b). That is, the arm unit support structure of the play equipment 50 has the same configuration as that of “Yajirobe” and is excellent in the left / right balance. With such a configuration, the arm unit 20 can always be balanced in an appropriate state regardless of the weight difference. That is, even those who have a weight difference can play with certainty.

  In addition, the 1st handle 53a fixed to the arm unit 20 is arrange | positioned in the seat front position which the passenger | crew of the 1st seat 51a can grasp. Therefore, the occupant of the first seat 51a can rotate his / her seat relative to the arm unit 20 by using the first handle 53a. The force for rotating the first seat 51a relative to the arm unit 20 is transmitted to the first wire 57a via the first shaft body 52a and the first disk member 56a, and becomes a force for swinging the arm unit 20. That is, the occupant of the first seat 51a can swing the arm unit 20 by swinging the first seat 51a on which the passenger is sitting using the first handle 53a.

  When playing with such playground equipment 50, first, two players sit on an arbitrary seat. Since the position of the play equipment 50 is high, for example, one of the seats is lowered by hand, and a person with a light weight is put on this seat, and then a person with a heavy weight lowers the other seat and rides on its own. Then, the state of the arm unit 20 becomes a balanced state corresponding to the weight difference between the two. That is, the smaller the weight difference is, the more balanced it is in the height position, and the more the weight difference is, the more heavier the person is near the ground and the lighter the weight is the higher the balance is. Thereafter, when both of them sitting on the seat grip the handles 53a and 53b and apply force, the arm unit 20 swings. Thereby, it can play with playground equipment 50.

  In addition, as a seat stabilization mechanism, the structure using a chain and a sprocket other than the structure (structure using a wire and a pulley) used with the play equipment 50 of this embodiment can be mentioned (refer FIG. 9). In the play equipment 50b shown in FIG. 9, the central disk member 55b, the first disk member 58a, and the second disk member 58b are sprockets having the same shape (that is, the same diameter). That is, the first disc member 58a and the second disc member 58b have teeth on the outer peripheral portion (winding portion) on which the chains 59a and 59b, which are cord-like members (that is, power transmission members), are hung. And the play equipment 50b of this embodiment is provided with two conveniences, what forms a set with the 1st disk member 58a, and what forms a set with the 2nd disk member 58b as the center disk member 55b. The members common to the play equipment 50 are denoted by the same reference numerals, and the description thereof is omitted.

(Fourth embodiment)
Next, a play equipment 60 as a fourth embodiment of the present invention will be described with reference to FIGS. 10 and 11. In addition, the same code | symbol is attached | subjected to the member common with the play equipment 50, and the description is abbreviate | omitted.

  As shown in FIG. 10, the play equipment 60 includes a support 11 and an arm unit 20 that is rotatably supported via a pivot 12 at the end of the support. The arm unit 20 includes left and right arm portions 20a and 20b and seats 61a and 61b disposed at the front ends of the respective arm portions. Body (seat pivot) 62a, 62b is attached. The first seat 61a is fixed to the first shaft body 62a of the first arm portion 20a, and the second seat 61b is fixed to the second shaft body 62b of the second arm portion 20b. The seats 61 a and 61 b are swingable with respect to the arm unit 20. Accordingly, the seating surfaces of the seats 61a and 61b are directed in a certain direction by gravity. That is, in the play equipment 60, a structure in which the seats 61a and 61b are swingably attached to the arm unit 20 functions as a seat stabilization mechanism.

  As shown in FIG. 11B, the distance L5 from the axis of the pivot 12 to the first seat 61a is the vertical separation distance L6 from the axis of the pivot 12 to the floor surface G on which the play equipment 60 is installed. It is always shorter. Therefore, the arm unit 20 can swing to an angle at which the first seat 61a is positioned directly below the pivot. This configuration is the same for the second seat 61b. With such a structure, the seat can be raised to a higher position, and a greater thrill can be given to the occupant.

  The first arm portion 20 a and the second arm portion 20 b are bent in a U-shape (inverted V-shape) with the pivot 12 as a bending point, like the play equipment 50. With such a configuration, the arm unit 20 can be balanced in an appropriate state regardless of the difference in weight. That is, even those who have a weight difference can easily and easily play with the play equipment 60.

  A first handle 63a is fixed to the first arm portion 20a, and a second handle 63b is fixed to the second arm portion 20b.

  Each handle 63a, 63b is disposed in front of the corresponding seat so that the passenger of each seat 61a, 61b can grasp it. Therefore, the passengers of the seats 61a and 61b can rotate their seats relative to the arm unit 20 by applying force to the handles 63a and 63b.

  When a force is applied to the handles 63a and 63b, a force is applied in consideration that the applied force is used to increase the seat swing (the force is applied to the handle in accordance with the seat swing cycle). ) Directly swings its own seat, thereby indirectly swinging the arm unit 20. On the other hand, if a force is applied in consideration of the fact that it is used to increase the swing of the arm unit 20 (a force is applied to the handle in accordance with the swing cycle of the arm unit 20), the arm unit 20 is directly applied. Oscillates greatly, whereby both seats 61a and 61b can be indirectly oscillated.

  In this way, in the play equipment 60, the seat can be swung in various patterns depending on how the force is applied to the handles 63a and 63b. That is, since an unexpected swinging state can be realized, a greater thrill can be provided.

(Fifth embodiment)
Next, with reference to FIG. 12 to FIG. 13, a play equipment 70 as a fifth embodiment of the present invention will be described.

  As shown in FIG. 12, the play equipment 70 includes a support column 11 fixed at the play equipment installation position, and an arm unit 20 that is rotatably supported by a distal end portion of the support column 11 via a pivot 12. The arm unit 20 includes left and right arm portions 20a and 20b extending on both sides with the pivot 12 interposed therebetween.

  Among the arms 20a and 20b, the first arm 20a shown on the right side in FIG. 12 includes two upper and lower first horizontal arms 71a and 72a pivotally supported by the column 11 at one end, and both first horizontal arms. A first vertical arm 73 a that connects the other ends of 71 a and 72 a to each other is provided. These arms 71 a, 72 a, 73 a and the column 11 constitute a first four-bar link. Similarly, the second arm portion 20b shown on the left side in FIG. 12 includes two upper and lower second horizontal arms 71b and 72b and a second vertical arm 73b that connects the other ends of the second horizontal arms 71b and 72b. These arms 71b, 72b, 73b and the support column 11 constitute a second four-bar link. The first vertical arm 73a is provided with a first seat 74a and a first bar 75a for gripping an occupant, and the second vertical arm 71b is provided with a second seat 74b and a second bar 75b for gripping an occupant. Is attached.

  The lower first horizontal arm 72a and the lower second horizontal arm 72b disposed on the lower side of the horizontal arm are integrated. Accordingly, the first arm portion 20a and the second arm portion 20b always swing as an integral member.

  As shown in FIG. 12 (B), the upper and lower two first horizontal arms 71a and 72a constituting the first four-bar link have a distance L7 between the pivot positions on one end side (the column 11 side). In addition, the distance is longer than the distance L8 between the pivot positions on the other side (the first vertical arm 73a side). With such a configuration, as shown in FIG. 13, the direction of the first vertical arm 73 a changes in conjunction with the swing of the arm unit 20. That is, when a force that changes the direction is applied to the first vertical arm 73a using the first bar 75a, this force acts as a force that causes the arm unit 20 to swing. Therefore, the occupant of the first seat 74a can swing the arm unit 20 by applying force to the first bar 75a without kicking the ground. The same applies to the passengers in the second seat 74b.

  The orientation of the seating surfaces of the seats 74a and 74b of the play equipment 70 is inclined according to the swing of the arm unit 20 (see FIG. 13). Therefore, a seat stabilization mechanism may be provided separately from the arm unit 20 so that the orientation of the seating surface is maintained in a constant direction regardless of the swinging state of the arm unit 20.

  The playground equipment of each of the above embodiments is an example of the playground equipment according to the present invention and can be variously modified. The present invention includes modifications made without departing from the spirit of the present invention. .

  For example, the play equipment 10, 30, 50, 60, 70 of each of the above embodiments may be provided with a brake mechanism (braking means) that stops swinging of the arm unit 20. As a brake mechanism, the well-known brake mechanism used with the bicycle etc. can be mentioned, for example. When this is used, a brake lever (operation part of the braking means) is arranged in front of the seat so that a passenger sitting on the seat can operate it. With such a brake mechanism, the swinging arm unit 20 can be stopped at an arbitrary swinging position. Therefore, the seat where the child is sitting can be stopped at the highest point, or can be stopped at a position that the child has not predicted. If this can be done, the child can be given a greater thrill and is more attractive to the child.

  Moreover, you may equip the play equipment of the said embodiment with the vibration means for rocking the arm unit 20. FIG. For example, the handles 53a and 53b of the play equipment 50, the handles 63a and 63b of the play equipment 60, or the bars 75a and 75b of the play equipment 70 described above are examples of the vibration means. The vibration means is not limited to a handle used by hand, and various configurations are conceivable. In addition to the handle, for example, a pedal used by stepping on with a foot instead of a hand can be mentioned. In this case, the pedal is arranged in front of the lower side of the seat so that the occupant sitting on the seat can step on with his / her foot or can be hooked on the toe and pulled toward him. The arm unit 20 can also be vibrated by kicking the ground. Therefore, it can be said that the play equipment including the support column having the pivot height set so that the ground can be kicked when the seat is lowered includes the excitation means.

  If there is such a vibrating means, the swing of the arm unit 20 can be easily increased. Therefore, the swing range (elevating range) of the seat can be expanded, the seat can be raised to a higher position, the maximum speed when swinging can be increased, or the swinging state can be continued for a longer period of time. it can. This can be more attractive to the child because it can give the child a greater thrill.

  Moreover, you may provide the rotation mechanism which supports the support | pillar 11 of playground equipment 10, 30, 50, 60, 70 rotatably around a vertical axis. For example, as shown in FIG. 14, a configuration in which a turntable 80 is installed as a rotation mechanism and a playground equipment (playground equipment 50 in FIG. 13) is installed thereon can be given. With such a configuration, the play equipment 50 can be rotated while the seesaw operation is performed, and a greater thrill can be given to the occupant.

  Further, if there is a turntable 80 for rotating the play equipment 50, the rotation angular velocity (rotational speed) of the play equipment 50 itself can be changed by changing the moment of inertia of the arm unit 20 while the play equipment is rotating. Thrills can be given. As described above, the play equipment 50 and the play equipment 60 are structures that can swing the arm unit 20 greatly, and that can change the moment of inertia of the arm unit 20 greatly. Therefore, in these playground equipment 50 and 60, when the playground equipment is rotated while the arm unit is swinging, the rotational speed of the playground equipment changes according to the change in the moment of inertia, and a greater thrill can be given to the occupant. Moreover, a big thrill can be given to a passenger | crew by Coriolis force and centrifugal force acting.

  Various diameters are conceivable as the size (here, the diameter) of the turntable 80 shown in FIG. For example, if the diameter of the turntable 80 is made larger than the total length of the arm unit 20, a person sitting on the seats 51 a and 51 b kicks the turntable 80 that rotates together with the play equipment 50 with his / her foot when approaching the floor surface. become. On the other hand, if the diameter of the turntable 80 is made as small as possible, the person sitting on the seats 51a and 51b kicks the floor surface (for example, the ground) G on which the play equipment 50 is installed with his / her foot when approaching the floor surface. .

10. . . Play equipment11. . . Struts, 12. . . Axis 20. . . Arm unit (arm member), 20a. . . First arm, 20b. . . Second arm 20p. . . Intermediate position 21a. . . Upper side arm (part of seat stabilization mechanism)
21b. . . Lower horizontal arm (part of seat stabilization mechanism)
21c, 21d. . . Vertical arm (part of seat stabilization mechanism)
21s. . . Seat support 22a. . . 1st seat, 22b. . . Second seat, 23a, 23b. . . Bar 21p. . . Intermediate positions 30 and 30b of the lateral arms 21a and 21b. . . Play equipment 31a. . . Upper first horizontal arm (part of seat stabilization mechanism)
32a. . . Lower first horizontal arm (part of seat stabilization mechanism)
33a. . . First vertical arm (part of seat stabilization mechanism)
31b. . . Upper second horizontal arm (part of seat stabilization mechanism)
32b. . . Lower second horizontal arm (part of seat stabilization mechanism)
33b. . . Second vertical arm (part of seat stabilization mechanism)
33p. . . The connecting position 33s. Of the pivot 12 and the lower first lateral arm 32a. . . Seat support 34a. . . 1st seat, 34b. . . Second seat, 35a. . . Bars 35b, 36b. . . Second seats 37b, 38b. . . Second vertical arm 39b. . . Pin (part of seat stabilization mechanism)
40. . . Seat member (part of seat stabilization mechanism), 41. . . Seat support 42a. . . Upper slider, 42b. . . Lower slider, 45a, 45b. . . Guide rails 50, 50b. . . Play equipment 51a. . . 1st seat, 51b. . . Second seat, 51s. . . Central position 52a of the first seat. . . First shaft (seat pivot), 52b. . . 2nd axis (seat axis)
53a, 53b. . . Handle, 54a, 54b. . . Bar 55. . . Central disk member (part of seat stabilization mechanism)
56a. . . First disc member (part of the seat stabilization mechanism)
56b. . . Second disk member (part of seat stabilization mechanism)
57a, 57b. . . Wire (Rope-like member, part of seat stabilization mechanism)
55b. . . Central disk member (part of seat stabilization mechanism)
58a. . . First disc member (part of the seat stabilization mechanism)
58b. . . Second disk member (part of seat stabilization mechanism)
59a, 59b. . . Chain (Rope-like member, part of seat stabilization mechanism)
60. . . Play equipment 61a. . . 1st seat, 61b. . . Second seat 62a. . . First shaft (seat pivot), 62b. . . 2nd axis (seat axis)
63a, 63b. . . Handle 70. . . Play equipment 71a. . . Upper first horizontal arm (part of the first four-bar link)
72a. . . Lower first horizontal arm (part of first four-bar link)
73a. . . First vertical arm (part of the first four-bar link)
71b. . . Upper second horizontal arm (part of the second four-bar link)
72b. . . Lower second horizontal arm (part of the second four-bar link)
73b. . . Second vertical arm (part of the second four-bar link)
74a. . . 1st seat, 74b. . . Second seat, 75a, 75b. . . Bar 80. . . Turntable (rotating mechanism)
L1. . . The distance L2 between the axes of the two sliders 42a and 42b. . . Distance between pivot positions at both ends of the second vertical arm 33b L3. . . The distance L4. From the pivot 12 to the first seat 51a. . . Vertical spacing L5 from the pivot axis 12 to the floor surface G5. . . Distance from pivot 12 to first seat 61a L6. . . Vertical separation distance L7. From the pivot axis 12 to the floor surface G . . The distance L8. Between the pivot positions on the column 11 side of the first lateral arms 71a, 72a. . . The distance P1. . . A plane P2 including a line segment obtained by connecting the axis of the pivot 12 and the connection position 33p. . . A plane G. including a line segment obtained by connecting the axis of the pivot 12 and the second shaft body 52b. . . Floor surface (ground)

Claims (4)

Comprising an arm member rotatably supported by a support post via a pivot;
The arm member includes an arm portion extending on both sides of the pivot, a seat that is distributed and arranged on both sides of the pivot, and a seat that can maintain the orientation of the seating surface of the seat constant. With a stabilization mechanism,
The connection position with the arm member of the seat on one side that is allocated and arranged is a plane that includes a line segment obtained by connecting the axis of the pivot of the arm member and the connection position with the arm member on the other side. Is located vertically lower than
The separation distance between the shaft center and the seat on the one side and the separation distance between the shaft center and the seat on the other side are both shorter than the distance from the shaft center to the floor surface immediately below the shaft center,
The seat stabilization mechanism includes:
One side seat pivot for pivoting the one side seat with respect to one arm;
The other side seat pivot for pivotally supporting the other side seat with respect to the other arm,
A central disk member coaxially disposed on the pivot and fixed to the column;
A one-sided disk member that is coaxially and rotatably supported by the one-side seat pivot and moves in synchronization with the one-side seat;
The other side disk member that is coaxially and rotatably supported on the other side seat pivot and moves in synchronization with the one side seat;
One cord-like member wound around the central disc member and the one-side disc member,
The other cord-like member wound around the central disc member and the other disc member,
With
The play apparatus , wherein the central disk member, the one-side disk member, and the other-side disk member have the same diameter of a winding portion around which the cord-like member is wound . Braking means for stopping the swinging of the arm member is further provided,
2. The play equipment according to claim 1, wherein the operation portion of the braking means is disposed at a position where the operation portion can be operated by an occupant sitting on the seat. And further comprising vibration means for swinging the arm member,
3. The play equipment according to claim 1, wherein the operation unit of the vibration means is disposed at a position that can be operated by an occupant sitting on the seat.   The playground equipment according to any one of claims 1 to 3, further comprising a rotation mechanism that rotatably supports the support column about a vertical axis.

Images