JP5319187B2 - Swing tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide oscillating play equipment or other oscillating equipment, capable of compactly composing an oscillating mechanism as compared with conventional equipment, and capable of suppressing a risk of being caught to the minimum. <P>SOLUTION: The oscillating mechanism 3 includes a four-link mechanism formed from a base 7 functioning as a fixed joint, two oscillation arms 8 and 9 functioning as oscillation joints, and a connection part 10 functioning as a connection joint. The two oscillation arms 8 and 9 are pivotally attached to the base 7 at pivots A and B on a side surface of the base 7, and the lower ends of the two oscillation arms 8 and 9 are pivotally attached to the connection part 10 at pivots C and D of the connection part 10. Oscillation-side turning restraining means of the oscillation arms 8 and 9 and a fixed-side turning restraining means in the fixed state restrain the range of the turning angle of the two oscillation arms as the means interrelate with each other with time lag. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a swinging tool capable of configuring a swinging mechanism portion compactly.

  As a swinging playground equipment to be installed in a park or the like, as shown in FIG. 14, one using a double lever mechanism / 4 link mechanism is conventionally known. This swinging play equipment 301 has two struts 304 erected on the ground at a predetermined interval, and a wooden horse 302 composed of a head, a trunk, and a pair of left and right steps 314, all having the same length. The upper ends of the pillars 304 are connected to the front and rear ends of the left and right steps 314 by levers 315, respectively.

  In this swinging play tool 301, the dimension L2 from the pivot point at the front end (the central axis of the joint) to the pivot point at the rear end in step 314 is the pivot point of each of the front and rear columns 304a and 304b. It is set to be slightly shorter than the dimension L1 between them, and as shown in FIG. 14 (1), in the equilibrium state, the front and rear insulators 315a and 315b are both upward with respect to the lower side. It is held in an inclined state so as to spread outward.

  Since the swing play equipment 301 of FIG. 14 employs such a mechanism, when the user (infant) moves the center of gravity forward or backward across the trunk of the wooden horse 302, the equilibrium shown in FIG. From the state, as shown in (2) in the figure, the wooden horse 302 moves forward and inclines forward, or as shown in (3), the wooden horse 302 moves backward and inclines backward. It will rock until In addition, when the tilted state is realized, the restoring force works to move in the opposite direction, so that the wooden horse 302 can be continuously swung.

  Such an operation mode of the wooden horse 302 can be schematically grasped as “the operation mode of the swinging node and the connecting node” in the four-link mechanism as shown in FIG. More specifically, in FIG. 15, AB is a fixed node, AD and BC are swinging nodes, CD is a connecting node, and points A and B at both ends of the fixed node AB are columns 304b and 304a shown in FIG. The connecting node CD corresponds to step 314 of the horse 302. Further, the points C and D at both ends of the connecting node CD correspond to the pivot point at the front end and the pivot point at the rear end in step 314, respectively. The swinging nodes AD and BC correspond to the front and rear levers 315a and 315b shown in FIG.

When the center of gravity of the horse 302 including the user is moved forward (left side in the figure) from the equilibrium state as shown in FIG. 15 (1), as shown in FIG. BC turns downward from the position at equilibrium indicated by the broken line with point B as a fulcrum, and the rear swing node AD moves upward from the position at equilibrium indicated by the broken line with point A as a fulcrum. It will turn. As a result, connecting section CD, as by a chain line CD ₁ shown in FIG. 15 (4), the forward tilt state as well as move forward (left in the drawing).

On the other hand, when the center of gravity of the horse 302 is moved backward (right side in the figure) from the equilibrium state as shown in FIG. 15 (1), as shown in FIG. The moving node BC pivots upward from the point of equilibrium indicated by the broken line with the point B as a fulcrum, and the rear swinging node AD has the point A as the fulcrum from the position of equilibrium indicated by the broken line. It will rotate downward. As a result, connecting section CD, as the chain line CD ₂ two points shown in FIG. 15 (4), the backward tilting state with move rearward (right side in the drawing).

Therefore, when moving repeatedly centroid back-and-forth direction, horse 302, as shown in FIG. 15 (4), around the equilibrium dashed CD _0, the two-dot chain line from the forward tilting state of the one-dot chain line CD ₁ CD ₂ oscillates in the front-rear direction and the up-down direction until the rearward tilted state. At this time, the point C on the front side reciprocates on an arc trajectory centered on the point B, and the point D on the rear side reciprocates on an arc trajectory centered on the point A. Become.

  Since the source of the restoring force of the swinging play equipment 301 in FIG. 14 is gravity, a restoring force corresponding to the weight of the user is generated. As a result, the swinging playground equipment 301 operates in the same manner regardless of weight, except for the scale of the playground equipment. In addition, since the structure is simple, if a component such as a bearing is appropriately selected, the structure operates smoothly and extremely high durability can be expected. Further, since the operation is limited to the vertical plane, there is an advantage that the user can easily predict the motion.

  However, in the case of the swinging playground equipment 301 of FIG. 14, there is a risk that an infant's finger or hand will be caught between the fixed part (the support post 304) and the exercise part (such as the lever 315). This problem is caused by the fact that the scale of the four-link mechanism for realizing the swing is large, and the danger part where the pinching is caused is located outside the wooden horse 302. Therefore, it is desired to further reduce the size of the mechanism so that the danger of such pinching can be avoided.

  However, when swinging is to be realized by a four-link mechanism, the scale of the mechanism is naturally determined due to various circumstances, and it is very difficult to configure the scale smaller than that shown in FIG. Also, if the scale of the 4-link mechanism is reduced, a large load is applied to the means (stopper, buffer material, shock absorber, etc.) for regulating the swing range (rotation angle range) for the purpose of ensuring safety. As a result, it becomes difficult to completely absorb the impact when the limit position is reached, and there is a possibility that a problem may arise in terms of durability.

  Further, the swinging playground equipment 301 shown in FIG. 14 places the two support columns 304 at appropriate positions (so that the distance between the pivot points of the front and rear support columns 304a and 304b has an appropriate size (L1)). Since it must be installed, there is also a problem that the installation work is complicated.

  As described above, it is very difficult to downsize the mechanism of the conventional swinging playground equipment including the swinging playground tool 301 of FIG. 14, and the risk of pinching cannot be effectively avoided. The present invention has been made to solve the above-described problems in the prior art, and the swing mechanism can be made more compact than the conventional one, and the risk of pinching can be minimized. An object of the present invention is to provide a swinging toy that can be used, and other swinging tools.

  According to a first aspect of the present invention, there is provided a swing tool comprising a swing mechanism portion, a support means for supporting the swing mechanism portion above the installation surface, and an upper object fixed to the swing mechanism portion. An oscillating tool, the oscillating mechanism section includes at least one four-link mechanism including a base that functions as a fixed node, two oscillating arms that function as oscillating nodes, and a connecting portion that functions as a coupling node. Two swinging arms (A, B) that are set at predetermined intervals on the side surface of the base, and the two swing arms are pivotally attached to the base, respectively, and at the connecting portion, the predetermined interval At the two pivot points (C, D) set by placing the lower end sides of the two swing arms to the connection portion, the two swing arms and the connection portion are , Centering on the two pivot points (A, B) of the base Each swing side rotation restriction arranged at each intermediate portion of the two swing arms when the two swing arms are rotated to a predetermined angle from the equilibrium state. The means is configured such that the rotation angle range of the two swing arms is restricted by engaging with the fixed side rotation restricting means that is in a fixed state during the swing operation of the swing arms. It is a feature.

  According to a second aspect of the present invention, there is provided a swing tool comprising a swing mechanism portion, a support means for supporting the swing mechanism portion above the installation surface, and an upper object fixed to the swing mechanism portion. The swing mechanism has at least one four-link mechanism comprising a base that functions as a fixed joint, two swing arms that function as swing joints, and a connection that functions as a connection joint. Each of the swing arms includes a base, a lever that extends downward from the base, and an extension that extends upward and has swing-side rotation restricting means. At the two pivot points (A, B) set at predetermined intervals in FIG. 2, the base portions of the two swing arms are pivotally attached to the base and set at predetermined intervals at the connecting portion. Two pivot points (C, D , The lower ends of the levers of the two swing arms are pivotally attached to the connecting portion, so that the two swing arms and the connecting portion are connected to the two pivot points (A, B) of the base. Each swing side rotation restricting means of the extension part of the two swing arms when the two swing arms are rotated from the equilibrium state to a predetermined angle. It is characterized in that the rotation angle range of the two oscillating arms is restricted by engaging with the fixed side rotation restricting means that is in a fixed state during the pivoting operation of the oscillating arms. .

  Note that it is preferable that at least one of the swing side rotation restricting means and the fixed side turn restricting means includes a buffer material formed of an elastic material. During the rotation operation, the swing side rotation restricting means of one swing arm and the swing side rotation restricting means of the other swing arm are different from each other by a time difference with respect to the opposed fixed side turn restricting means. It is preferable to configure so as to be related with each other.

  Further, the swing mechanism portion includes a first four-link mechanism including two swing arms pivotally attached to one side surface of the base and a connecting portion pivotally attached to the swing arms. And a second four-link mechanism comprising two swing arms pivotally attached to the opposite side surface of the base and a connecting portion pivotally attached to the swing arms. Preferably, the swing arm on one side of the base and the swing arm on the opposite side are respectively connected by two joint bars that function as swing side rotation restricting means, and the first four-link mechanism and the first It is preferable that the two 4-link mechanisms are configured to rotate in the same direction in conjunction with each other.

  The two joint bars are provided with a cushioning material that functions as a swinging-side rotation restricting means, and the cushioning material that functions as a fixed-side pivoting restricting means is disposed at both ends of the base downward. More preferably, the cushioning material is attached in a state where the upper end side is opened upward, or a cushioning material which functions as a fixed side rotation restricting means is attached in the center of the base.

  According to the swing tool according to the present invention, the swing mechanism can be configured in a compact manner, and the danger of pinching can be minimized. Moreover, since it can support by one support | pillar, installation construction is easy.

  Furthermore, the rotation angle range of the four link mechanism can be regulated by a simple and sufficiently durable rotation restricting means, and an unpleasant impact when the four link mechanism reaches the rotation limit. It can be smoothly reversed without accompanying.

  The best mode for carrying out the swinging playground equipment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view of a rocking tool 1 (single-seat rocking rocker) according to the first embodiment of the present invention. In this figure, 2 is an upper object (a wooden horse), 3 is a swing mechanism, 4 is a support, and 6 is a concrete foundation. As shown in the figure, the swinging mechanism unit 3 is very small compared to the size of the upper object 2 (fixed to the swinging mechanism unit 3), and is configured compactly. Is supported above the installation surface only by the support 4 (support means).

  FIG. 2 is a side view of the swinging mechanism unit 3 attached to the column 4. In this figure, 7 is a base, 8 and 9 are swing arms, and 10 is a connecting portion. Among these, the base 7 has a horizontal top end face 7a and two parallel side faces 7b and 7b 'held vertically (see FIG. 3), and the both side faces 7b and 7b' Each of the two through holes is formed at a symmetrical position in the left-right direction with a predetermined interval. An imaginary line connecting the center points of these through holes is horizontal.

  In the present embodiment, the base 7 is formed by cutting a metal square pipe into a predetermined length and processing both ends as appropriate. Is fixed to the upper end of the column 4.

  The swing arm 8 extends in the vertical direction in the basic state (the state shown in FIG. 2). An attachment hole for attaching to the base 7 is formed at one end (upper end) of the swing arm 8, and the swing arm 8 is formed by a bolt inserted into the attachment hole and the through hole of the base 7. It is pivotally attached to the base 7 so as to be rotatable. A mounting hole is also formed in the other end (lower end) of the swing arm 8.

  The swing arm 9 has a symmetrical shape with respect to the swing arm 8. Except for being symmetrical, the swing arm 9 has the same structure as the swing arm 8 and has mounting holes formed at the upper end and the lower end, respectively. The bolt is inserted into the through-hole of the base 7 so as to be pivotable with respect to the base 7.

  Two bolts are fixed to the connecting portion 10 at a predetermined interval. These bolts are inserted through the mounting holes of the swing arms 8 and 9, respectively. The connecting portion 10 is connected to the swing arms 8 and 9 so as to be rotatable about these bolts. 2 is a pivot point between the base 7 and the swing arm 8, B is a pivot point between the base 7 and the swing arm 9, and C is a swing point between the swing arm 9 and the connecting portion 10. The pivot point, symbol D, indicates the pivot point between the swing arm 8 and the connecting portion 10, respectively.

  As described above, the swing mechanism unit 3 includes two swing arms 8 and 9 fixed to the column 4 at two pivot points A and B set at predetermined intervals on the side surface of the base 7. The lower end sides of the two swing arms 8 and 9 are connected to the connecting part 10 at two pivoting points C and D which are pivotally attached to the base 7 and which are set at predetermined intervals in the connecting part 10. Since the pivot arms 8 and 9 and the connecting portion 10 are pivotally attached to each other, the four-link mechanism rotates within a predetermined angle range in the direction around the axis of the two pivot points A and B of the base 7. Will work.

Usually, the 4-link mechanism is composed of a fixed node, two swing nodes, and a connection node. In the 4-link mechanism in the swing mechanism portion 3 of FIG. 2, the base 7 is a fixed node, and the swing arms 8 and 9 are rocked. The moving node and the connecting part 10 become the connecting node. In this embodiment, the length of the fixed node (the separation dimension L _AB between the pivot points A and B) is 12 cm, and the length of the swinging node (the separation dimension L _AD between the pivot points A and D), The separation dimension L _BC between the pivot points B and C) is set to 20 cm, and the length of the connecting node (the separation dimension L _CD between the pivot points C and D) is set to 10 cm.

  Note that the length of the swing node is determined in consideration of the average length of the leg of a 3-year-old child (about 23 cm), the height from the seat surface of the upper object 2 to step 2a (see FIG. 1), etc. Although it is preferable to set it as 20 cm like a form, it is not necessarily limited to this value, It can set suitably in the range of 15-40 cm.

  In addition, the length of the fixed node is preferably 60 (± 5)% of the length of the swinging node in view of the suitability of the operation mode as a single-seat wooden-type swinging toy, but is 45 to 75%. It can also be set within the range. If the length is shorter than 45%, the radius of curvature of the trajectory becomes smaller, and the movement mode jumps up, which is problematic in terms of safety. On the other hand, if the length is longer than 75%, the vertical movement is reversed. As a result, there is a possibility that the operation mode as a swinging play equipment of a single horse type will deviate from its suitability (that is, it will be a play equipment that is not interesting to play).

  The length of the connecting node is preferably 80 (± 5)% of the length of the fixed node, but can also be set within a range of 70 to 95%. If it is shorter than 70%, the angle of inclination of the upper object 2 at the time of turning is large, which is dangerous. If it is longer than 95%, the upper object 2 is hardly inclined at the time of turning. There is a possibility that the operation mode as a riding horse-type rocking playground equipment will be out of suitability.

In this oscillating mechanism portion 3, the length of the connecting node (separation dimension L _CD between the pivot points C and D) is greater than the length of the fixed node (separation dimension L _AB between the pivot points A and B). 2 is set so as to be slightly shorter. Therefore, in the basic state (equilibrium state) shown in FIG. 2, both the left and right swinging nodes (swinging arms 8 and 9) are outward with respect to the lower side. It is held in an inclined state so as to expand.

  FIG. 3 is a perspective view of the swinging mechanism unit 3 attached to the column 4. As shown in this figure, a four-link mechanism (swinging) that operates in exactly the same manner (same shape and size) as the four-link mechanism (first four-link mechanism) shown in FIG. The second four-link mechanism comprising the moving arms 8 ′ and 9 ′ and the connecting portion 10 ′ is also attached to the side surface 7 b ′ on the opposite side of the base 7.

  Then, the joint bars 5 and 5 (swing side) on which the swing arms 8 and 9 on one side and the swing arms 8 'and 9' on the opposite side across the base 7 are mounted in the vicinity of the respective intermediate portions. The four link mechanisms (first four link mechanisms) on one side and the swing arm on the opposite side, which are connected to each other via the rotation restricting means), and are composed of the swing arms 8, 9 and the connecting portion 10. A four-link mechanism (second four-link mechanism) composed of 8 ', 9' and a connecting portion 10 'is rotated (swinged) in the same direction in conjunction with the link mechanism.

  Since the swinging tool 1 of the present embodiment shown in FIG. 1 employs such a swinging mechanism part 3, the user (infant) straddles the body part of the upper object 2 and moves the center of gravity forward or backward. When moved, the upper object 2 moves forward and inclines forward from the equilibrium state shown in FIG. 1, or swings until the upper object 2 moves rearward and inclines backward. Further, when the tilted state is realized, the restoring force works to move in the opposite direction, so that the upper object 2 can be continuously swung.

  It should be noted that the outer periphery of the joint bars 5, 5 attached to the swing arms 8, 8 ', 9, 9' is a buffer formed by forming an elastic material (for example, urethane resin) in a tube shape. A material (swinging side buffering material 11a, 11b) (swinging side rotation restricting means) is mounted. In addition, a buffer material (fixed side buffer materials 12a and 12b) (fixed side rotation restricting means) formed of an elastic material is also provided in the vicinity of both ends of the base 7 so that the lower end side is opened downward. It is installed with.

  These joint bars 5, 5, swing side shock absorbers 11 a, 11 b, fixed side shock absorbers 12 a, 12 b, etc. are provided for the swing mechanism part in order to ensure the safety of the user of the swing tool 1. 3 is for restricting the swinging motion (rotation angle) 3 within a predetermined range, and for mitigating an impact generated when the swinging mechanism portion 3 is rotated to the restriction position (limit position).

  Explaining this point in detail, the operation of the swing mechanism 3 starts from the basic state (equilibrium state) as shown in FIG. 2, and the lower end side of the swing arms 8 and 9 and the connecting portion 10 are pivoted. It turns in the left-right direction (left-right direction in FIG. 2) around the landing points A and B, but such a turning operation is arranged near both ends of the base 7 that is always fixed. The fixed side cushioning members 12a and 12b (fixed side rotation restricting means) and both side surfaces 4a and 4b of the support column 4 (or fixed members in the vicinity thereof) (fixed side rotation restricting means) By engaging (contacting and pressing) the swing-side cushioning materials 11a, 11b (swing-side rotation restricting means) mounted on the outer periphery of the bars 5, 5 (swing-side turning restricting means), It is configured to be regulated.

  More specifically, when the lower ends of the swinging arms 8 and 9 and the connecting portion 10 are rotated to the right about the pivot points A and B, respectively, they are rotated to a predetermined angle. At this point, as shown in FIG. 4, first, the swing side shock absorbing material 11 b fixed to the right swing arm 9 comes into contact with the fixed side shock absorbing material 12 b arranged near the right end of the base 7. . At this time, the rocking side cushioning material 11a attached to the left rocking arm 8 is not in contact with any member.

  As described above, the swing-side cushioning materials 11a and 11b and the fixed-side cushioning materials 12a and 12b are formed of a material having elasticity, so that the swing-side cushioning material 11b of the right swing arm 9 and Even if the fixed-side cushioning material 12b comes into contact, the pivoting motion of the swing arms 8, 9 and the connecting portion 10 does not stop suddenly, and the swing arms 8, 9 and the connecting portion 10 While pressing the material 11b against the fixed-side cushioning material 12b, both are elastically deformed and further rotated to the right according to the inertial force. However, when the swinging side buffer material 11b and the fixed side buffering material 12b are elastically deformed, corresponding energy is consumed, and the inertial forces of the swinging arms 8 and 9 and the connecting portion 10 that rotate in the right direction are attenuated. .

  When the swing arms 8 and 9 and the connecting portion 10 are further rotated rightward from the state shown in FIG. 4, the swing side cushioning material 11 a to which the left swing arm 8 is attached becomes the left side of the column 4. As shown in FIG. 5, the rocking side cushioning material 11 a is pressed against the left side surface 4 a of the support column 4 to be elastically deformed. At this time, the other oscillating side cushioning material 11b is pressed against the stationary side cushioning material 12b with a larger force than in the state shown in FIG. The stationary buffer material 12b is deformed more greatly.

  Accordingly, when the state shown in FIG. 5 is reached, the left-side swing side shock absorber 11a is elastically deformed, and the right-side swing side shock absorber 11b and the fixed-side shock absorber 12b are more elastically deformed. 4, more energy is consumed than in the state shown in FIG. 4, and the inertial forces of the swinging arms 8 and 9 and the connecting portion 10 that rotate to the right are attenuated to “0”. The rotation stops.

  Then, due to the restoring force (repulsive force) and gravity of the swing side shock absorbing materials 11a and 11b and the fixed side shock absorbing material 12b, the swing arms 8, 9 and the connecting portion 10 are reversed and start to rotate leftward. When the rotation in the direction reaches the limit position, the left-side swing side cushioning material 11a is pressed against the fixed-side cushioning material 12a to be deformed, and the right-side swing side cushioning material 11b is The inertial force of the swing arms 8 and 9 and the connecting portion 10 is attenuated and reversed on the basis of the same principle as that when it is deformed by being pressed against the surface 4b and rotated to the right, and the swing operation is repeated. Can play.

  As described above, in this embodiment, the means for restricting the swing range during the pivoting operation of the swing arms 8 and 9 (the swing-side rotation restricting means of one swing arm 8 (or 9) is provided. And the swing-side rotation restricting means of the other swing arm 9 (or 8) are configured to act in a stepwise manner with respect to the respective fixed-side turn restricting means. Since they are designed to come into contact with each other at an appropriate timing, and materials having an appropriate elastic force are selected as the materials of the swing side buffer materials 11a and 11b and the fixed side buffer materials 12a and 12b, Even when an adult having a weight of about 70 kg is used, the swing arm 8 or the like is rotated before the swing side buffer materials 11a and 11b or the fixed side buffer materials 12a and 12b reach the limit of elastic deformation. The inertial force is suitably damped and uncomfortable It can be smoothly reversed without the hammer. Moreover, since it can avoid that a buffer material deform | transforms to a limit, sufficient performance can be expected also about durability and safety | security.

  In the rotation restricting means of the present embodiment, the cushioning material is included on both the swing side and the fixed side, but the cushioning material is not necessarily required on both sides. The cushioning material on either side can also be omitted. For example, the swing side rotation restricting means is constituted by the swing side buffer members 11a and 11b and the joint bars 5 and 5 formed of a material having a larger elastic force, and the fixed side turn restricting means is rotated. It may be configured only by a member (such as the bottom surface of the base 7) that is in a fixed state during operation, or conversely, in addition to the fixed-side cushioning materials 12a and 12b disposed at both ends of the base 7, By attaching a fixed side cushioning material to both side surfaces 4a and 4b, the fixed side rotation restricting means can be fixed to both ends of the base 7 which is fixed during the rotation operation, and both side surfaces 4a and 4b ( Alternatively, it may be configured by other fixed members) and their fixed side cushioning material, and the swing side rotation restricting means may be configured by only the joint bars 5 and 5.

  As a matter of course, the fixed-side cushioning material is disposed at both ends of the base 7 and is also disposed on both side surfaces 4 a and 4 b of the support column 4, and further on the outer periphery of the joint bars 5 and 5. The members 11a and 11b may be attached, and a cushioning material may be included in all the rotation restricting means that come into contact with each other.

  Next, a rocking tool according to a second embodiment of the present invention will be described. FIG. 6 is a side view of the swinging tool 1 (a single-seat wooden horse swinging playground equipment) according to the second embodiment of the present invention. In this figure, 2 is an upper object (a wooden horse), 3 is a swing mechanism, 4 is a support, and 6 is a concrete foundation. As shown in the figure, the swinging mechanism unit 3 is very small compared to the size of the upper object 2 (fixed to the swinging mechanism unit 3), and is configured compactly. Is supported above the installation surface only by the support 4 (support means).

  FIG. 7 is a side view of the swinging mechanism unit 3 attached to the column 4. In this figure, 7 is a base, 8 and 9 are swing arms, and 10 is a connecting portion. Of these, the base 7 has a horizontal top end face 7a and two parallel side faces 7b and 7b 'held vertically (see FIG. 8), and on both side faces 7b and 7b'. Each of the two through holes is formed at a symmetrical position in the left-right direction with a predetermined interval. An imaginary line connecting the center points of these through holes is horizontal.

  In this embodiment, the base 7 is formed by cutting a metal square pipe into a predetermined length and processing both ends, and in a state in which the base 7 is turned sideways (the longitudinal direction is horizontal). Is fixed to the upper end of the column 4.

  The swing arm 8 includes a base portion 8a, a lever 8b, and an extension portion 8c. In the basic state (the state shown in FIG. 7), the lever 8b extends downward from the base 8a, and the extension 8c extends from the base 8a to the opposite side, that is, upward. . The length of the extension 8c (the amount of protrusion from the base 8a) is about 1/3 of the length of the lever 8b.

  An attachment hole for attaching the swing arm 8 to the base 7 is formed in the base portion 8a. The swing arm 8 is attached to the base 7 by a bolt inserted into the attachment hole and the through hole of the base 7. It is pivotally attached so that it can rotate with respect to. A mounting hole is also formed at the lower end of the lever 8b.

  The swing arm 9 has a symmetrical shape with respect to the swing arm 8. Except for being symmetrical, the swing arm 9 has the same structure as the swing arm 8, and is composed of a base portion 9a, a lever 9b, and an extension portion 9c, and is formed on the base portion 9a. The mounting hole and the bolt inserted into the through hole of the base 7 are pivotally attached to the base 7 so that the lever 9b can be rotated. An attachment hole is formed at the lower end of the lever 9b. Yes.

  Two bolts are fixed to the connecting portion 10 at a predetermined interval. These bolts are respectively inserted into the mounting holes of the lever 8b and the mounting holes of the lever 9b. The connecting portion 10 is connected to the swing arms 8 and 9 so as to be rotatable about these bolts. 7 is a pivot point between the base 7 and the swing arm 8, B is a pivot point between the base 7 and the swing arm 9, and C is a swing point between the swing arm 9 and the connecting portion 10. The pivot point, symbol D, indicates the pivot point between the swing arm 8 and the connecting portion 10, respectively.

  As described above, the swing mechanism unit 3 includes the base portions 8a and 9a of the two swing arms 8 and 9 at the two pivot points A and B set at predetermined intervals on the side surface of the base 7, respectively. The two swinging arms 8 and 9 are pivoted at two pivotal points C and D which are pivotally attached to the base 7 fixed to the support column 4 and set at predetermined intervals in the connecting portion 10. Since the lower ends of the levers 8 b and 9 b are pivotally attached to the connecting portion 10, the swing arms 8 and 9 and the connecting portion 10 are in the direction around the axis of the two pivot points A and B of the base 7. It operates as a four-link mechanism that rotates within a predetermined angle range.

In the four-link mechanism in the swing mechanism portion 3 of FIG. 7, the base 7 is a fixed node, the levers 8b and 9b of the swing arms 8 and 9 are swing nodes, and the connecting portion 10 is a connecting node. In this embodiment, the length of the fixed node (the separation dimension L _AB between the pivot points A and B) is 12 cm, and the length of the swinging node (the separation dimension L _AD between the pivot points A and D), The separation dimension L _BC between the pivot points B and C) is set to 20 cm, and the length of the connecting node (the separation dimension L _CD between the pivot points C and D) is set to 10 cm.

  The length of the swinging node is 20 cm as in this embodiment in consideration of the average length of the leg of a 3-year-old child (about 23 cm), the height from the seating surface of the upper object 2 to step 2a, and the like. However, it is not necessarily limited to this value, and can be appropriately set within a range of 15 to 40 cm.

  In addition, the length of the fixed node is preferably 60 (± 5)% of the length of the swinging node from the suitability of the operation mode as a play equipment, but may be set within a range of 45 to 75%. it can. If the length is shorter than 45%, the radius of curvature of the trajectory becomes smaller, and the movement mode jumps up, which is problematic in terms of safety. On the other hand, if the length is longer than 75%, the vertical movement is reversed. There is a possibility that the operation mode as a play equipment will be out of suitability (that is, it will be a play equipment that is not interesting to play).

  The length of the connecting node is preferably 80 (± 5)% of the length of the fixed node, but can also be set within a range of 70 to 95%. If it is shorter than 70%, the inclination angle of the upper object 2 at the time of rotation is increased, which is dangerous. If it is longer than 95%, the upper object 2 is hardly inclined at the time of rotation. There is a possibility that the operation mode will be out of suitability.

In this oscillating mechanism portion 3, the length of the connecting node (separation dimension L _CD between the pivot points C and D) is greater than the length of the fixed node (separation dimension L _AB between the pivot points A and B). 7 is set to be slightly shorter, so that in the basic state (equilibrium state) shown in FIG. 7, both the left and right swinging nodes (lever 8b, 9b) are extended outward from the lower side. It is held in a state of being inclined.

  FIG. 8 is a perspective view of the swinging mechanism unit 3 attached to the column 4. As shown in this figure, the four-link mechanism (swinging) is the same as the four-link mechanism (first four-link mechanism) shown in FIG. The second four-link mechanism comprising the moving arms 8 ′ and 9 ′ and the connecting portion 10 ′ is also attached to the side surface 7 b ′ on the opposite side of the base 7.

  The extension portions 8c, 9c of the swing arm 8, 9 on one side and the extension portions 8c ', 9c' of the swing arm 8 ', 9' on the opposite side across the base 7 are each extended portion 8c. , 8c ′, 9c, 9c ′ are connected to each other via joint bars 5 and 5 (swing-side rotation restricting means) fixed to the upper ends of the swing arms 8, 9 and the connecting portion 10, respectively. 4 link mechanism (second 4 link mechanism) consisting of 4 link mechanisms (first 4 link mechanism) on one side and swing arms 8 ′, 9 ′ on the opposite side and connecting part 10 ′. In conjunction with this, they rotate (swing) in the same direction.

  Since the swinging tool 1 of the present embodiment shown in FIG. 6 employs such a swinging mechanism part 3, the user (infant) straddles the trunk of the upper object 2 and moves the center of gravity forward or backward. When moved, the upper object 2 moves forward and tilts forward from the equilibrium state shown in FIG. 6, or swings until the upper object 2 moves backward and tilts backward. Further, when the tilted state is realized, the restoring force works to move in the opposite direction, so that the upper object 2 can be continuously swung.

  It should be noted that a material having elastic force (for example, on the outer periphery of the joint bars 5 and 5 fixed to the upper ends of the extension portions 8c, 8c ', 9c and 9c' of the swing arms 8, 8 ', 9, 9' , Urethane resin or the like) is formed in a tube shape, and cushioning materials (swinging side cushioning materials 11a and 11b) (swinging side rotation restricting means) are mounted. Further, a buffer material (fixed side buffer material 12) (fixed side rotation restricting means) formed of an elastic material is also attached to the center of the base 7 with the upper end side opened upward. Yes.

  These joint bars 5, 5, the rocking side shock absorbers 11 a and 11 b, the top end surface of the base 7, and the fixed side shock absorbing material 12 are rocked to ensure the safety of the user of the rocking tool 1. This is for restricting the swinging operation (turning angle) of the moving mechanism unit 3 within a predetermined range, and for mitigating the impact that occurs when the swinging mechanism unit 3 is turned to the restricting position (limit position). .

  Explaining this point in detail, the operation of the swing mechanism 3 is from the basic state (equilibrium state) as shown in FIG. 7, and the lower ends of the swing arms 8 and 9 and the connecting portion 10 are pivoted. It turns in the left-right direction (left-right direction in FIG. 7) around the landing points A and B, but this turning operation is always placed at the center of the top end surface of the base 7 that is fixed. The joint bars 5 and 5 (swing-side rotation restricting means) with respect to the fixed-side cushioning material 12 (fixed-side rotation restricting means) and both ends (fixed-side rotation restricting means) of the top end surface of the base 7. The rocking side shock absorbing materials 11a and 11b (the rocking side rotation restricting means) mounted on the outer periphery of () are engaged (contacted and pressed) to be regulated.

  More specifically, when the lower ends of the swinging arms 8 and 9 and the connecting portion 10 are rotated to the right about the pivot points A and B, respectively, they are rotated to a predetermined angle. At the time, as shown in FIG. 9, first, the swing side shock absorbing material 11 b fixed to the extension 9 c of the right swing arm 9 is fixed to the fixed side shock absorbing material 12 arranged at the center of the base 7. Contact. At this time, the swinging side cushioning material 11 a fixed to the extension 8 c of the left swinging arm 8 is not in contact with the top end surface of the base 7.

  As described above, the rocking-side cushioning materials 11a and 11b and the fixed-side cushioning material 12 are formed of an elastic material. Even if the shock absorbing material 12 comes into contact, the swinging movement of the swing arms 8 and 9 and the connecting portion 10 does not stop suddenly. While being pressed against the fixed-side cushioning material 12, both are elastically deformed and further rotated to the right according to the inertial force. However, when the rocking side shock absorbing material 11b and the fixed side shock absorbing material 12 are elastically deformed, corresponding energy is consumed, and the inertial forces of the rocking arms 8 and 9 and the connecting portion 10 that rotate in the right direction are attenuated. .

  When the swing arms 8 and 9 and the connecting portion 10 are further rotated to the right from the state shown in FIG. 9, the swing side shock absorbing material 11a fixed to the extension portion 8c of the left swing arm 8 is Next, as shown in FIG. 10, the rocking side cushioning material 11 a is elastically deformed by being pressed against the top end surface of the base 7. At this time, the other oscillating cushioning material 11b is pressed against the stationary cushioning material 12 with a greater force than in the state shown in FIG. The stationary buffer material 12 is deformed more greatly.

  Accordingly, when the state shown in FIG. 10 is reached, the left-side swing side shock absorber 11a is elastically deformed, and the right-side swing side shock absorber 11b and the fixed-side shock absorber 12 are more elastically deformed. More energy than that in the state shown in FIG. 10 is consumed, and the inertial forces of the swinging arms 8 and 9 and the connecting portion 10 that rotate to the right are attenuated to “0”. The rotation stops.

  Then, due to the restoring force (repulsive force) and gravity of the swing side buffer materials 11a, 11b and the fixed side buffer material 12, the swing arms 8, 9 and the connecting portion 10 are reversed and start to rotate leftward, When the rotation in the direction reaches the limit position, the left-side oscillating cushioning material 11 a is pressed against the fixed-side cushioning material 12 to be deformed, and the right-side oscillating cushioning material 11 b is It is deformed by being pressed against the end face, and the inertial force of the swing arms 8 and 9 and the connecting portion 10 is attenuated and reversed by the same principle as when rotating to the right, and can be played by repeating the swing operation. It is like that.

  As described above, in this embodiment, the means for restricting the swing range during the pivoting operation of the swing arms 8 and 9 (the swing-side rotation restricting means of one swing arm 8 (or 9) is provided. And the swing-side rotation restricting means of the other swing arm 9 (or 8) are configured to act in a stepwise manner with respect to the respective fixed-side turn restricting means. These are designed so that they come into contact with each other at an appropriate timing, and furthermore, materials having an appropriate elastic force are selected as the materials of the rocking side cushioning materials 11a and 11b and the stationary side cushioning material 12, so that the weight is 70 kg. Even when an adult of the same level is used, the inertial force when the swing arm 8 or the like rotates before the swing side buffer materials 11a, 11b or the fixed side buffer material 12 reaches the limit of elastic deformation. Suitable for damping and smooth without unpleasant impact It can be reversed. Moreover, since it can avoid that a buffer material deform | transforms to a limit, sufficient performance can be expected also about durability and safety | security.

  In the rotation restricting means of the present embodiment, the cushioning material is included on both the swing side and the fixed side, but the cushioning material is not necessarily required on both sides. The cushioning material on either side can also be omitted. For example, the swing side rotation restricting means is constituted by the swing side buffer members 11a and 11b and the joint bars 5 and 5 formed of a material having a larger elastic force, and the fixed side turn restricting means is rotated. It may be configured only by a member (such as the top end surface of the base 7) that is in a fixed state during operation, or conversely, in addition to the fixed-side cushioning material 12 disposed at the center of the top end surface of the base 7, The fixed-side cushioning member is attached to both the left and right ends of the top end surface so that the fixed-side rotation restricting means is fixed to the top end surface of the base 7 (or another member in the fixed state) that is fixed during the rotation operation. The rocking side rotation restricting means may be constituted only by the joint bars 5 and 5 while being constituted by those fixed side cushioning materials.

  As a matter of course, the fixed-side cushioning material is disposed at both ends and the center of the top end surface of the base 7, and the swinging-side cushioning materials 11 a and 11 b are attached to the outer circumferences of the joint bars 5 and 5. It can also be set as the structure which includes a buffer material in all the rotation control means to contact.

  Next, a rocking tool according to a third embodiment of the present invention will be described. FIG. 11 is a side view of the rocking mechanism portion 3 of the rocking tool according to the third embodiment of the present invention. The swing mechanism 3 can be suitably used when the swing tool is configured as a “seesaw”. In this figure, 7 is a base, 8 and 9 are swing arms, and 10 is a connecting portion. Among these, the base 7 has a horizontal top end face 7a and two parallel side faces 7b held vertically, and two through-holes are provided on each side face 7b. It forms in the symmetrical position about the left-right direction at intervals. An imaginary line connecting the center points of these through holes is horizontal.

  In the present embodiment, the base 7 is formed by cutting a metal square pipe into a predetermined length and processing both ends as appropriate. Is fixed to the upper end of the column 4.

  In the basic state (the state shown in FIG. 11), the swing arm 8 extends in the vertical direction in a slightly inclined state. An attachment hole for attaching to the base 7 is formed at one end (upper end) of the swing arm 8, and the swing arm 8 is formed by a bolt inserted into the attachment hole and the through hole of the base 7. It is pivotally attached to the base 7 so as to be rotatable. A mounting hole is also formed in the other end (lower end) of the swing arm 8.

  The swing arm 9 has a symmetrical shape with respect to the swing arm 8. Except for being symmetrical, the swing arm 9 has the same structure as the swing arm 8 and has mounting holes formed at the upper end and the lower end, respectively. The bolt is inserted into the through-hole of the base 7 so as to be pivotable with respect to the base 7.

  Two bolts are fixed to the connecting portion 10 at a predetermined interval. These bolts are inserted through the mounting holes of the swing arms 8 and 9, respectively. The connecting portion 10 is connected to the swing arms 8 and 9 so as to be rotatable about these bolts. 11 is a pivot point between the base 7 and the swing arm 8, B is a pivot point between the base 7 and the swing arm 9, and C is a swing point between the swing arm 9 and the connecting portion 10. The pivot point, symbol D, indicates the pivot point between the swing arm 8 and the connecting portion 10, respectively.

  As described above, the swing mechanism unit 3 includes two swing arms 8 and 9 fixed to the column 4 at two pivot points A and B set at predetermined intervals on the side surface of the base 7. The lower end sides of the two swing arms 8 and 9 are connected to the connecting part 10 at two pivoting points C and D which are pivotally attached to the base 7 and which are set at predetermined intervals in the connecting part 10. Since the pivot arms 8 and 9 and the connecting portion 10 are pivotally attached to each other, the four-link mechanism rotates within a predetermined angle range in the direction around the axis of the two pivot points A and B of the base 7. Will work.

In the four-link mechanism in the swing mechanism portion 3 of FIG. 11, the base 7 is a fixed node, the swing arms 8 and 9 are swing nodes, and the connecting portion 10 is a connecting node. In the present embodiment, the length of the fixed node (separation dimension L _AB between the pivot points A and B) is 20 cm, and the length of the swing node (separation dimension L _AD between the pivot points A and D), The separation dimension L _BC between the pivot points B and C) is set to 18 cm, and the length of the coupling node (separation dimension L _CD between the pivot points C and D) is set to 35 cm.

  The length of the swinging node is preferably 18 cm as in this embodiment, but is not necessarily limited to this value, and can be set as appropriate within a range of 15 to 25 cm.

  In addition, the length of the fixed node is preferably 110 (± 5)% of the length of the swinging node in view of the suitability of the operation mode as a seesaw, but may be set within a range of 120 to 100%. it can. When the length is shorter than 100%, there is a problem that the cushioning material and the column interfere with each other. When the length is longer than 120%, there is a problem that the seesaw does not function.

  The length of the connecting node is preferably 175 (± 5)% of the length of the fixed node, but can also be set within a range of 200 to 160%. If it is shorter than 160%, there is a problem that the vertical movement of the seesaw is reduced, and if it is longer than 200%, there is a problem that one of them falls almost vertically when it turns from rising to lowering.

In this oscillating mechanism portion 3, the length of the connecting node (separation dimension L _CD between the pivot points C and D) is greater than the length of the fixed node (separation dimension L _AB between the pivot points A and B). Therefore, in the basic state (equilibrium state) shown in FIG. 11, both the left and right swinging nodes (swinging arms 8 and 9) expand outward from the top to the bottom. Thus, it is held in an inclined state.

  Also in this embodiment, the swing arms 8 and 9 on one side and the swing arms 8 'and 9' (not shown) on the opposite side across the base 7 are mounted in the vicinity of the respective intermediate portions. Are connected via the joint bars 5 and 5 (oscillating side rotation restricting means), respectively, and a four-link mechanism (first four) consisting of the oscillating arms 8 and 9 and the connecting portion 10. The link mechanism) and the four link mechanism (second four link mechanism) comprising the swing arms 8 'and 9' on the opposite side and the connecting portion 10 'are rotated in the same direction (swing). ).

  Since the swing tool of the present embodiment employs such a swing mechanism portion 3, a user (two infants) can attach to the seating portions at both ends of the seesaw supported by the swing mechanism portion 3. If each of them straddles, kicks the ground and jumps up and down alternately, it will swing from the equilibrium state shown in FIG. 11 to an upwardly inclined state or an upwardly inclined state. .

  A cushioning material (oscillating side) is formed by forming a material having elasticity (for example, urethane resin) in a tube shape on the outer periphery of the joint bars 5 and 5 attached to the swinging arms 8 and 9. Buffer materials 11a and 11b) (swing-side rotation restricting means) are mounted. In addition, a buffer material (fixed side buffer materials 12a and 12b) (fixed side rotation restricting means) formed of an elastic material is also provided in the vicinity of both ends of the base 7 so that the lower end side is opened downward. It is installed with.

  These joint bars 5, 5, swing side shock absorbers 11 a, 11 b, fixed side shock absorbers 12 a, 12 b, etc. are provided for the swing mechanism part in order to ensure the safety of the user of the swing tool 1. 3 is for restricting the swinging motion (rotation angle) 3 within a predetermined range, and for mitigating an impact generated when the swinging mechanism portion 3 is rotated to the restriction position (limit position).

  Explaining in detail this point, the operation of the swing mechanism 3 starts from the basic state (equilibrium state) as shown in FIG. 11, and the lower end side of the swing arms 8 and 9 and the connecting portion 10 are pivoted. It turns in the left-right direction (left-right direction in FIG. 11) around the landing points A and B, but such a turning operation is always arranged near both ends of the base 7 that is fixed. The fixed side cushioning members 12a and 12b (fixed side rotation restricting means) and both side surfaces 4a and 4b of the support column 4 (or fixed members in the vicinity thereof) (fixed side rotation restricting means) By engaging (contacting and pressing) the swing-side cushioning materials 11a, 11b (swing-side rotation restricting means) mounted on the outer periphery of the bars 5, 5 (swing-side turning restricting means), It is configured to be regulated.

  More specifically, when the lower ends of the swinging arms 8 and 9 and the connecting portion 10 are rotated to the right about the pivot points A and B, respectively, they are rotated to a predetermined angle. At the time, as shown in FIG. 12, first, the swing side shock absorbing material 11b fixed to the right swing arm 9 comes into contact with the fixed side shock absorbing material 12b arranged near the right end of the base 7. . At this time, the rocking side cushioning material 11a attached to the left rocking arm 8 is not in contact with any member.

  As described above, the swing-side cushioning materials 11a and 11b and the fixed-side cushioning materials 12a and 12b are formed of a material having elasticity, so that the swing-side cushioning material 11b of the right swing arm 9 and Even if the fixed-side cushioning material 12b comes into contact, the pivoting motion of the swing arms 8, 9 and the connecting portion 10 does not stop suddenly, and the swing arms 8, 9 and the connecting portion 10 While pressing the material 11b against the fixed-side cushioning material 12b, both are elastically deformed and further rotated to the right according to the inertial force. However, when the swinging side buffer material 11b and the fixed side buffering material 12b are elastically deformed, corresponding energy is consumed, and the inertial forces of the swinging arms 8 and 9 and the connecting portion 10 that rotate in the right direction are attenuated. .

  When the swing arms 8 and 9 and the connecting portion 10 are further rotated rightward from the state shown in FIG. 12, the swing side cushioning material 11 a to which the left swing arm 8 is attached becomes the left side of the support column 4. As shown in FIG. 13, the rocking side cushioning material 11 a is pressed against the left side surface 4 a of the support column 4 to be elastically deformed. At this time, the other oscillating shock-absorbing material 11b is pressed against the fixed-side shock absorbing material 12b with a larger force than in the state shown in FIG. The stationary buffer material 12b is deformed more greatly.

  Therefore, when the state shown in FIG. 13 is reached, the left-side swing side shock absorber 11a is elastically deformed, and the right-side swing side shock absorber 11b and the fixed-side shock absorber 12b are more elastically deformed. 12, more energy is consumed than in the state shown in FIG. 12, and the inertial forces of the swing arms 8 and 9 and the connecting portion 10 that rotate to the right are attenuated to “0”. The rotation stops.

  Then, due to the restoring force (repulsive force) and gravity of the swing side shock absorbing materials 11a and 11b and the fixed side shock absorbing material 12b, the swing arms 8, 9 and the connecting portion 10 are reversed and start to rotate leftward. When the rotation in the direction reaches the limit position, the left-side swing side cushioning material 11a is pressed against the fixed-side cushioning material 12a to be deformed, and the right-side swing side cushioning material 11b is The inertial force of the swing arms 8 and 9 and the connecting portion 10 is attenuated and reversed on the basis of the same principle as that when it is deformed by being pressed against the surface 4b and rotated to the right, and the swing operation is repeated. Can play.

  As described above, in this embodiment, the means for restricting the swing range during the pivoting operation of the swing arms 8 and 9 (the swing-side rotation restricting means of one swing arm 8 (or 9) is provided. And the swing-side rotation restricting means of the other swing arm 9 (or 8) are configured to act in a stepwise manner with respect to the respective fixed-side turn restricting means. Since they are designed to come into contact with each other at an appropriate timing, and materials having an appropriate elastic force are selected as the materials of the swing side buffer materials 11a and 11b and the fixed side buffer materials 12a and 12b, Even when an adult having a weight of about 70 kg is used, the swing arm 8 or the like is rotated before the swing side buffer materials 11a and 11b or the fixed side buffer materials 12a and 12b reach the limit of elastic deformation. The inertial force is suitably damped and uncomfortable It can be smoothly reversed without the hammer. Moreover, since it can avoid that a buffer material deform | transforms to a limit, sufficient performance can be expected also about durability and safety | security.

  In the rotation restricting means of the present embodiment, the shock absorber is included on both the swing side and the fixed side, but the shock absorber is not necessarily required on both sides. The cushioning material on either side can also be omitted. For example, the swing side rotation restricting means is constituted by the swing side buffer members 11a and 11b and the joint bars 5 and 5 formed of a material having a larger elastic force, and the fixed side turn restricting means is rotated. It may be configured only by a member (such as the bottom surface of the base 7) that is in a fixed state during operation, or conversely, in addition to the fixed-side cushioning materials 12a and 12b disposed at both ends of the base 7, By attaching a fixed side cushioning material to both side surfaces 4a and 4b, the fixed side rotation restricting means can be fixed to both ends of the base 7 which is fixed during the rotation operation, and both side surfaces 4a and 4b ( Alternatively, it may be configured by other fixed members) and their fixed side cushioning material, and the swing side rotation restricting means may be configured by only the joint bars 5 and 5.

  As a matter of course, the fixed-side cushioning material is disposed on both end portions of the base 7 and also on both side surfaces 4a and 4b of the support column 4, and further on the outer periphery of the joint bars 5 and 5 on the swing side. The cushioning materials 11a and 11b may be attached, and the cushioning material may be included in all the rotation regulating means that are in contact with each other.

  As described above, the example in which the present invention is configured as a “playing equipment” such as a single-seat wooden horse rocking playground equipment or a seesaw has been described as an embodiment of the present invention, but the present invention is not necessarily limited to the “playing equipment”. For example, it can also be configured as a swinging tool other than a playground equipment such as a rocking chair.

The side view of the rocking tool 1 which concerns on the 1st Embodiment of this invention. The side view of the rocking | fluctuation mechanism part 3 shown in FIG. FIG. 3 is a perspective view of the swing mechanism unit 3 shown in FIG. 2. The side view which shows the operation | movement aspect of the rocking | fluctuation mechanism part 3 shown in FIG. The side view which shows the operation | movement aspect of the rocking | fluctuation mechanism part 3 shown in FIG. The side view of the rocking tool 1 which concerns on the 2nd Embodiment of this invention. The side view of the rocking | fluctuation mechanism part 3 shown in FIG. The perspective view of the rocking | fluctuation mechanism part 3 shown in FIG. The side view which shows the operation | movement aspect of the rocking | fluctuation mechanism part 3 shown in FIG. The side view which shows the operation | movement aspect of the rocking | fluctuation mechanism part 3 shown in FIG. The side view of the rocking | fluctuation mechanism part 3 of the rocking | fluctuation tool which concerns on the 3rd Embodiment of this invention. The side view which shows the operation | movement aspect of the rocking | fluctuation mechanism part 3 shown in FIG. The side view which shows the operation | movement aspect of the rocking | fluctuation mechanism part 3 shown in FIG. The side view which shows the structure and operation | movement aspect of the conventional rocking | fluctuation play equipment 301. FIG. Explanatory drawing which showed typically the operation | movement aspect of the rocking play equipment 301 of FIG.

Explanation of symbols

1: Oscillator,
2: Good quality,
2a: step,
3: Swing mechanism,
4: Support,
4a: left side,
4b: right side surface,
5: Joint bar,
6: Concrete foundation,
7: Base,
8, 9: swing arm,
8a, 9a: base,
8b, 9b: lever,
8c, 9c: Extension part,
10: connecting part,
11a, 11b: rocking side cushioning material,
12, 12a, 12b: buffer material on the fixed side,
301: Swing playground equipment,
302: Wooden horse
304, 304a, 304b: struts,
314: Step,
315, 315a, 315b: Isogo

Claims (7)

A swinging tool configured by a swinging mechanism part, a support means for supporting the swinging mechanism part above the installation surface, and an upper object fixed to the swinging mechanism part,
The swing mechanism has at least one four-link mechanism including a base that functions as a fixed joint, two swing arms that function as swing joints, and a connection that functions as a connection joint,
At the two pivot points (A, B) set at predetermined intervals on the side surface of the base, the two swing arms are pivoted to the base, respectively, and at the connection portion, the predetermined interval is set. At the two pivot points (C, D) set by placing the lower pivot sides of the two pivot arms to the connecting portion, the two pivot arms, and The connecting portion is configured to be rotatable around two pivot points (A, B) of the base,
When the two oscillating arms are rotated to a predetermined angle from the equilibrium state, each oscillating side rotation restricting means disposed at each intermediate portion of the two oscillating arms is rotated by the oscillating arm. The rotation angle range of the two oscillating arms is configured to be regulated by engaging with the fixed side rotation restricting means that is in a fixed state during the moving operation ,
A first four-link mechanism in which the swinging mechanism part is composed of two swinging arms pivotally attached to one side surface of the base and a connecting part pivotally attached to the swinging arms; A second four-link mechanism comprising two oscillating arms pivotally attached to the opposite side surface of the base and a connecting portion pivotally attached to the oscillating arms;
The swing arm on one side of the base and the swing arm on the opposite side are respectively connected by two joint bars that function as the swing side rotation restricting means, and the first four-link mechanism and the first A swinging tool , wherein the four-link mechanism of 2 is configured to rotate in the same direction in conjunction with each other . A swinging tool configured by a swinging mechanism part, a support means for supporting the swinging mechanism part above the installation surface, and an upper object fixed to the swinging mechanism part,
The swing mechanism has at least one four-link mechanism including a base that functions as a fixed joint, two swing arms that function as swing joints, and a connection that functions as a connection joint,
The two swing arms are each constituted by a base, a lever extending downward from the base, and an extension having a swing side rotation restricting means extending upward.
At two pivot points (A, B) set at predetermined intervals on the side surface of the base, the base portions of the two swing arms are pivoted to the base, respectively, and the connecting portion In the two pivot points (C, D) set at a predetermined interval in FIG. 2, the lower ends of the levers of the two swing arms are pivoted with respect to the connecting portion, respectively. The swing arm and the connecting portion are configured to be rotatable about two pivot points (A, B) of the base,
When the two oscillating arms are rotated to a predetermined angle from the equilibrium state, each oscillating side rotation restricting means of the extension part of the two oscillating arms is in a rotating operation of the oscillating arm. An oscillating device characterized in that a rotation angle range of the two oscillating arms is restricted by engaging with a fixed side rotation restricting means in a fixed state. A buffer material is included on at least one of the swing side rotation restricting means and the fixed side rotation restricting means,
During the rotation of the two swing arms, the swing side rotation restricting means of one swing arm and the swing side rotation restricting means of the other swing arm are opposed to each other on the fixed side. 3. The swinging tool according to claim 1, wherein the swinging tool is configured to be associated with the rotation restricting means with a time difference. A first four-link mechanism in which the swinging mechanism portion is composed of two swinging arms pivotally attached to one side surface of the base and a connecting portion pivotally attached to the swinging arms; A second four-link mechanism comprising two oscillating arms pivotally attached to the opposite side surface of the base and a connecting portion pivotally attached to the oscillating arms;
The swing arm on one side of the base and the swing arm on the opposite side are respectively connected by two joint bars that function as the swing side rotation restricting means, and the first four-link mechanism and the first The swing tool according to claim 2, wherein the four link mechanisms of 2 are configured to rotate in the same direction in conjunction with each other.   The rocking tool according to claim 4, wherein a buffer material functioning as rocking side rotation restricting means is attached to the two joint bars.   2. The swinging tool according to claim 1, wherein cushioning materials functioning as fixed-side rotation restricting means are attached to both ends of the base with the lower end side opened downward. .   The rocking tool according to claim 2, wherein a cushioning material functioning as a fixed-side rotation restricting means is attached to the center of the base with the upper end side opened upward.

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