seesaw

Abstract

The utility model discloses a seesaw, include: the base of fixed on the ground, the outside at least one part is cylindrical surface, is equipped with the guide groove of along the extension and in the axial with the predetermined amplitude to and fro fluctuation and the closed ring of head to tail connection of the cylindrical surface, the mounting seat of bottom pivot is equipped in the top end part of base, the middle segment pivot is equipped in the top end part of mounting seat's seesaw pole, the linkage rod, top end pivot is connected with the bottom surface of seesaw pole and bottom end part stretches to the outside of guide groove, and the linkage rod bottom end part one side still protrudes the guide slider of corresponding place in the guide groove and can slide along the guide groove, and be used for preventing the anti -runout structure that guide slider is taken off from the guide groove. The utility model discloses an embodiment through setting the guide groove of corresponding shape on the cylindrical surface of base outside, and the linkage rod is pivotally connected with the seesaw pole on the bottom surface, and the guide slider set up at the bottom end of linkage rod is placed in the guide groove, and always can realize the superposition of double movement of up and down swing and circumferential rotation, effectively promotes the interesting nature and safety of seesaw.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to the technical field of amusement fitness equipment, and particularly relates to a seesaw. BACKGROUND

[0002] The seesaw is a kind of amusement fitness equipment that is loved by many players including children and adults. With the development of technology, the existing seesaw has also developed from the traditional seesaw which can only swing up and down to the activity mode of not only swinging up and down but also rotating left and right.

[0003] The existing seesaw mainly comprises a base, a mounting seat pivotally arranged at the top end of the base and capable of rotating left and right relative to the base, a seesaw rod pivotally arranged at the top end of the mounting seat by means of a transversely arranged horizontal shaft, and seat cushions, handrails, buffer limiting members and other components further arranged at the opposite ends of the seesaw rod to further improve the comfort and safety of the seesaw. When in use, the people sitting at the two ends of the seesaw rod can take turns to stomp the ground downward to make the seesaw rod rotate up and down around the horizontal shaft, and can also stomp the ground laterally to make the seesaw rod rotate left and right together with the mounting seat around the base.

[0004] The existing seesaw has the following disadvantages when in use: although the seesaw rod can rotate up and down and rotate left and right, it is difficult to control when rotating left and right, and if the stomping force is large, the rotating speed of left and right is too fast, which has a safety hazard; in addition, the up and down rotation and the left and right rotation of the seesaw rod are difficult to combine well, and the interestingness is still insufficient. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the embodiment of the utility model is to provide a seesaw to improve safety and interestingness.

[0006] In order to solve the above technical problems, the embodiment of the utility model provides the following technical scheme: a seesaw, comprising:

[0007] A base fixed to the ground, at least a part of the outer side of the base is a cylindrical surface, a guide groove extending in the circumferential direction and undulating back and forth in the axial direction with a predetermined amplitude and connected end to end to form a closed ring is arranged on the cylindrical surface;

[0008] A mounting seat pivotally arranged at the top end of the base and capable of bidirectional rotation in the horizontal plane relative to the base;

[0009] A seesaw rod pivotally arranged at the top end of the mounting seat by means of a transverse horizontal shaft;

[0010] A linkage rod, a top end of the linkage rod is pivotally connected to a bottom surface of the seesaw rod near the mounting base, and a bottom end of the linkage rod extends to outside of the guide slot, and a bottom end of the linkage rod further protrudes towards one side of the guide slot and corresponds to a guide slider arranged in the guide slot and slidable along the guide slot; and

[0011] A anti-extraction structure for preventing the guide slider from being extracted from the guide slot.

[0012] Further, the anti-extraction structure is a limiting sleeve arranged on one side of the mounting base, a middle section of the linkage rod is arranged in the limiting sleeve, and an inner diameter of the limiting sleeve is larger than an outer diameter of the linkage rod to provide a space for the linkage rod to swing when the linkage rod moves with the seesaw rod.

[0013] Further, the guide slot is a narrowed slot with a narrow slot opening and a wide slot inner part, the guide slider includes a round shaft part with an outer diameter matching the slot opening width of the guide slot and a stop part protruding radially at an end of the round shaft part and arranged in the slot inner part of the guide slot, and the stop part and the guide slot cooperate to form the anti-extraction structure.

[0014] Further, the stop part is a roller pivotally arranged at an end of the round shaft part.

[0015] Further, the base includes a seat body and an outer sleeve tube arranged on a top of the seat body and fixed relative to the seat body, a side surface of the seat body is provided with a stepped surface with an outer high and an inner low, heights of high and low stepped surfaces of the stepped surface in an axial direction fluctuate with a predetermined amplitude, an inner diameter of the outer sleeve tube is larger than an outer diameter of a section of the seat body above the stepped surface, and a height of a tube wall bottom surface of the outer sleeve tube in the axial direction also fluctuates with a predetermined amplitude and matches a waveform of the high stepped surface of the stepped surface, and the tube wall bottom surface and the high stepped surface of the stepped surface cooperatively form a slot opening of the guide slot.

[0016] Further, the seesaw further includes a balance adjusting device, the balance adjusting device includes:

[0017] A counterweight strip slidably arranged at one end of the seesaw rod and extending along a length direction of the seesaw rod by a predetermined length;

[0018] A gear rack fixed to the counterweight strip and extending along a length direction of the counterweight strip;

[0019] A gear wheel pivotally arranged at a predetermined position of the seesaw rod and engaged with the gear rack;

[0020] A locking member arranged on the seesaw rod and used for locking the counterweight strip when the counterweight strip is moved into position; and

[0021] A driving handle used for driving the gear wheel to rotate.

[0022] Further, the seesaw is a hollow pipe and a through hole is formed in a predetermined position on the pipe wall of one side, the counterweight strip, the rack and the gear are assembled in the hollow cavity of the seesaw, and the driving handle is arranged outside the seesaw and one end of the driving handle extends into the hollow cavity and is coaxially connected with the gear through the through hole.

[0023] Further, the seesaw is a hollow pipe and a through hole is formed in a predetermined position on the pipe wall of one side, the counterweight strip, the gear and the gear are assembled in the hollow cavity of the seesaw, and the driving handle is placed outside the seesaw and one end of the driving handle extends into the hollow cavity and is coaxial connected with the gear through the through hole.

[0024] Further, the seesaw is a hollow pipe and a through hole is formed in a predetermined location on the pipe wall of one side, the counterweight strip, the rack and the gear are all assembled in the hollow cavity of the seesaw, and the driving handle is arranged outside the seesar and one end of the driving handle extends into the hollow cavity and is coaxially connected with the rack through the through hole.

[0025] Further, the driving handle is a crank or a rotating disc.

[0026] After the above technical scheme is used, the utility model discloses at least has following beneficial effect: the utility model discloses a cylindrical surface of the outside of the base is provided with the guide groove that extends along the circumference and undulates in the axial direction with predetermined amplitude and is closed in a ring shape, and a connecting rod is pivotally connected to the bottom surface of the seesaw, and the guide block arranged at the bottom end of the connecting rod is arranged in the guide groove, so that when the player rotates the seesaw and the mounting base relative to the base in the horizontal plane, the guide block at the bottom end of the connecting rod slides along the guide groove, thereby pushing the connecting rod and the seesaw to undulate in a wave shape, and when the player oscillates the seesaw up and down, the seesaw also drives the guide block to rise and fall through the connecting rod, and since the base is fixed to the ground and cannot rotate, the guide groove undulates, thereby forcing the guide block to slide along the guide groove in the circumferential direction, and further driving the seesaw to rotate left and right relative to the base. Therefore, the seesaw can always realize the superposition of the up-and-down oscillation and the circumferential rotation, and the interest is stronger. In addition, the guide block slides in the wave-shaped guide groove, which can better control the speed of the left-and-right rotation and is safe. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structure schematic view of an optional embodiment of the utility model.

[0028] Figure 2 It is a partial enlarged schematic view of an optional embodiment of the utility model in a disassembled state.

[0029] Figure 3 It is a partial sectional structure schematic view of an optional embodiment of the utility model.

[0030] Figure 4 This is a schematic diagram of the internal structure of the seesaw rod in another optional embodiment of the seesaw of this utility model.

[0031] Figure 5 This is a schematic diagram illustrating the structural principle of the locking mechanism for the counterweight strip in one optional embodiment of the seesaw of this utility model. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present utility model and are not intended to limit the present utility model. Moreover, the embodiments and features in the embodiments of the present application can be combined with each other unless otherwise specified.

[0033] like Figures 1-5 As shown, an optional embodiment of this utility model provides a seesaw, comprising:

[0034] A base 1 fixed to the ground, at least a portion of the outer side of the base 1 is a cylindrical surface 10, and the cylindrical surface 10 is provided with a guide groove 12 that extends circumferentially and oscillates back and forth in the axial direction with a predetermined amplitude and connects end to end to form a closed ring.

[0035] A mounting base 2, the bottom of which is pivotally mounted on the top of the base 1 and can rotate bidirectionally relative to the base 1 in the horizontal plane;

[0036] The middle section is pivotally mounted on the top end of the mounting base 2 via a transversely arranged horizontal axis 30;

[0037] Linkage rod 4, the top end of which is pivotally connected to the bottom surface of the rocker arm 3 near the mounting base 2, and the bottom end extending to the outside of the guide groove 12, and the bottom end of the linkage rod 4 also protruding from the side facing the guide groove 12 to form a guide slider 40 that is placed in the guide groove 12 and can slide along the guide groove 12; and

[0038] The anti-detachment structure 5 is used to prevent the guide slider 40 from detaching from the guide groove 12.

[0039] This embodiment of the invention features a guide groove 12 extending circumferentially and undulating axially at a predetermined amplitude on the cylindrical surface 10 of the outer side of the base 1, forming a closed loop. A connecting rod 4 is pivotally connected to the bottom surface of the rocker arm 3, with a guide slider 40 at the bottom end of the connecting rod positioned in the guide groove 12. Thus, when the player applies force to rotate the rocker arm 4 and the mounting base 2 relative to the base 1 in a horizontal plane, the guide slider 40 at the bottom end of the connecting rod 4 slides along the guide groove 12, thereby pushing the connecting rod 4 and the rocker arm 3 to undulate synchronously. When the player applies force to swing the rocker arm 3 up and down, the rocker arm 3 also drives the guide slider 40 to rise and fall via the connecting rod 4. Since the base 1 is fixed to the ground and does not rotate, the guide groove 12 forces the guide slider 40 to slide circumferentially along the guide groove 12, which in turn drives the rocker arm 3 and the mounting base 2 to rotate left and right relative to the base 1. Therefore, the superposition of the dual motions of swinging up and down and rotating around the circumference can always be achieved, making it more interesting; in addition, the guide slider 4 slides in the wave-shaped guide groove 12, which can better control the speed of left and right rotation and ensures good safety.

[0040] In specific implementation, the guide groove 12 can be sinusoidal on the cylindrical surface 10 (e.g., Figure 1 and Figure 2 (As shown) or a sawtooth wave shape extending circumferentially. The mounting base 2 can be pivotally connected to the base 1 by means of a ball joint or a vertical shaft with the central axis set vertically.

[0041] In another embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the anti-detachment structure 5 is a limiting sleeve disposed on one side of the mounting base 2. The middle section of the connecting rod 4 passes through the limiting sleeve. The inner diameter of the limiting sleeve is larger than the outer diameter of the connecting rod 4, providing space for the connecting rod 4 to swing obliquely when it moves with the rocker arm 3. In this embodiment, by setting a limiting sleeve on one side of the mounting base 2 as the anti-detachment structure 5, and passing the middle section of the connecting rod 4 through the limiting sleeve, the radial movement of the connecting rod 4 can be effectively restricted, thereby preventing the guide slider 40 at its bottom end from detaching from the guide groove 12. Since the top end of the connecting rod 4 is pivotally connected to the bottom surface of the rocker arm 3, when it moves up and down with the rocker arm 3, the connecting rod 4 will swing obliquely relative to the central axis of the limiting sleeve. Therefore, by appropriately increasing the inner diameter of the limiting sleeve, the oblique swing of the connecting rod 4 can be facilitated.

[0042] In yet another embodiment of this utility model, such as Figure 3As shown, the guide groove 12 is a narrow-slot wide-slot necking groove, the guide slider 40 includes a circular shaft part 400 with an outer diameter matching the slot width of the guide groove 12, and a retreat-preventing part 402 corresponding radially protruding at the end of the circular shaft part 400 and corresponding placed inside the guide groove 12, the retreat-preventing part 402 cooperates with the guide groove 12 to form the anti-disengagement structure 5. In this embodiment, the guide groove 12 is designed as a necking groove, and the guide slider 40 is inserted into the guide groove 12 through the circular shaft part 400, and the retreat-preventing part 402 radially protruding at the end of the circular shaft part 400 cooperates with the inner side of the slot wall to prevent the guide slider 40 from disengaging from the guide groove 12. In specific implementation, the circular shaft part 400 and the retreat-preventing part 402 can be in T-shaped layout or L-shaped layout, and in Figure 3 In the embodiment shown, both are in T-shaped layout.

[0043] In another embodiment of the utility model, as shown in Figure 2 and Figure 3 shown, the retreat-preventing part 402 is a roller pivoted at the end of the circular shaft part 400. By setting the retreat-preventing part 402 as a roller, the roller can be pressed against the slot wall of the guide groove 12 and correspondingly roll, which can reduce the frictional resistance and enable the seesaw 3 to rotate smoothly left and right, and also reduce the wear of components.

[0044] In another embodiment of the utility model, as shown in Figures 1 to 3 shown, the base 1 includes a seat body 11 and an outer sleeve 13 corresponding to the seat body 11 and fixed relative to the seat body 11, the side surface of the seat body 11 is provided with a stepped surface 110 with an outer high and an inner low, and the heights of the high step surface 1100 and the low step surface 1102 of the stepped surface 110 fluctuate with a predetermined amplitude in the axial direction, the inner diameter of the outer sleeve 13 is greater than the outer diameter of the section of the seat body 11 above the stepped surface 110, and the height of the pipe wall bottom surface 130 of the outer sleeve also fluctuates with a predetermined amplitude in the axial direction and matches the waveform of the high step surface 1100 of the stepped surface 110, and the pipe wall bottom surface 130 and the high step surface 1100 of the stepped surface 110 cooperatively form the slot of the guide groove 12. In this embodiment, the base 1 is designed as a split structure formed by the corresponding seat body 11 and outer sleeve 13, which facilitates the placement of the guide slider 40 in the guide groove 12 during assembly.

[0045] In another embodiment of the utility model, as shown in Figure 1 , Figure 4 and Figure 5 shown, the seesaw further includes a balance adjusting device 6, and the balance adjusting device 6 includes:

[0046] a counterweight strip 60 slidably arranged at one end of the seesaw 3 and extending along the length of the seesaw 3 by a predetermined length;

[0047] a rack 62 fixed to the counterweight strip 60 and extending along the length of the counterweight strip 60;

[0048] a gear 64 pivotally arranged at a predetermined position of the seesaw 3 and engaged with the rack 62;

[0049] a locking member 65 arranged on the seesaw 3 and used to lock the counterweight strip 60 when the counterweight strip 60 is moved into position; and

[0050] a driving handle 66 used to drive the gear 64 to rotate.

[0051] In the embodiment, the balance adjusting device 6 is arranged, the rack 62 is driven by the gear 64 by operating the driving handle 66, and then the counterweight strip 60 is driven to slide along the length of the seesaw 3 to a suitable position, so that the weight of the players respectively sitting at the two ends of the seesaw 3 can be better matched, the weight difference between the two ends of the seesaw 3 is not too large, and the seesaw 3 can be more smoothly swung up and down, and the players can operate more easily. It can be understood that the counterweight strip 60 is usually made of a material with a large density, such as an iron block, a copper block, a concrete block, etc.

[0052] In a specific implementation, the locking member 65 can be a bolt screwed on the side wall of the seesaw 3 and having an inner end abutting against the side wall of the counterweight strip 60. When it is necessary to adjust the position of the counterweight strip 60, the bolt is loosened to apply a force to the counterweight strip 60 to move the counterweight strip 60 along the length of the seesaw 3. When the counterweight strip 60 is adjusted into position, the bolt is tightened again to tightly abut the inner end of the bolt against the side wall of the counterweight strip 60, so that unnecessary displacement of the counterweight strip 60 can be avoided when the seesaw 3 swings up and down. In addition, other structural forms of the locking member 65 can also be used, for example, a locking screw laterally extending from the counterweight strip 60, a sliding groove corresponding to the locking screw being formed in the seesaw 3, and a nut being screwed on the rod body of the locking screw extending out of the sliding groove and being abutted against the outer wall of the seesaw 3 when tightened. The counterweight strip 60 is pulled tightly by the locking screw to fix the counterweight strip 60. It can be understood that, in the embodiment shown in Figure 5 In the embodiment shown in the drawings, when the counterweight strip 60 is arranged inside the seesaw 3, the locking members 65 are usually symmetrically arranged on the side walls of the seesaw 3 at opposite sides, so as to abut against the counterweight strip 60 from both sides to balance the force applied to the counterweight strip 60. In addition, according to the weight of the counterweight strip 60 and considering the adjustment range of the position of the counterweight strip 60, a plurality of groups of locking members 65 can be arranged along the length of the seesaw 3, so that no matter where the counterweight strip 60 is moved to, at least one group of locking members 65 can effectively lock the counterweight strip 60.

[0053] In another embodiment of the present application, as shown in Figure 4 the balance adjusting device 6, the supporting roller 67 and the guide roller 69 are arranged on the seesaw 3. In this embodiment, the seesaw 3 is designed as a hollow pipe, and most of the components of the balance adjusting device 6 are assembled in the hollow cavity 34 of the seesaw 3, so that effective shielding and protection can be achieved, and the relevant moving components can be prevented from pinching the players. It should be understood that the seesaw 3 can be formed by welding a plurality of plates or by one-piece forming. In this embodiment, the seesaw 3 is formed by welding a plurality of plates. Figure 4

[0054] In another embodiment of the present application, as shown in Figure 4 the balance adjusting device 6, the supporting roller 67 and the guide roller 69 are arranged on the seesaw 3. In this embodiment, the seesaw 3 is designed as a hollow pipe, and most of the components of the balance adjusting device 6 are assembled in the hollow cavity 34 of the seesaw 3, so that effective shielding and protection can be achieved, and the relevant moving components can be prevented from pinching the players. It should be understood that the seesaw 3 can be formed by welding a plurality of plates or by one-piece forming. In this embodiment, the seesaw 3 is formed by welding a plurality of plates.

[0055] In another embodiment of the present application, as shown in Figure 4 the balance adjusting device 6, the supporting roller 67 and the guide roller 69 are arranged on the seesaw 3. In this embodiment, the seesaw 3 is designed as a hollow pipe, and most of the components of the balance adjusting device 6 are assembled in the hollow cavity 34 of the seesaw 3, so that effective shielding and protection can be achieved, and the relevant moving components can be prevented from pinching the players. It should be understood that the seesaw 3 can be formed by welding a plurality of plates or by one-piece forming. In this embodiment, the seesaw 3 is formed by welding a plurality of plates. Figure 4 In another embodiment of the present application, as shown in

[0056] ​In the second embodiment of the utility model, the driving handle 66 is a crank or a rotating disc. This embodiment provides various structural forms of the driving handle 66, which is convenient for flexible selection according to requirements in specific implementation. In the embodiment shown in Figure 1 In the embodiment shown in

[0057] The embodiments of the utility model are described above in combination with the drawings, but the utility model is not limited to the specific embodiments described above, and the specific embodiments described above are only illustrative but not restrictive. Those skilled in the art can make many changes under the inspiration of the utility model without departing from the scope of the utility model and the protection scope of the claims, and these all belong to the protection scope of the utility model.

Claims

1. A seesaw, comprising: A base fixed to the ground; A mounting base pivotally mounted at the top of the base and capable of rotating bidirectionally relative to the base in a horizontal plane; as well as The middle section is pivotally mounted on the top of the mounting base by means of a horizontally arranged transverse axis; The base is characterized in that at least a portion of its outer surface is cylindrical, and the cylindrical surface is provided with a guide groove that extends circumferentially and oscillates back and forth in the axial direction with a predetermined amplitude and connects end to end to form a closed ring. The seesaw also includes: A linkage rod, the top end of which is pivotally connected to the bottom surface of the rocker arm near the mounting base, and the bottom end extending to the outside of the guide groove; the bottom end of the linkage rod also protrudes outward from the side facing the guide groove to form a guide slider that is placed within the guide groove and can slide along the guide groove; and An anti-detachment structure is provided to prevent the guide slider from detaching from the guide groove.

2. The seesaw as described in claim 1, characterized in that, The anti-detachment structure is a limiting sleeve set on one side of the mounting base. The middle section of the connecting rod passes through the limiting sleeve. The inner diameter of the limiting sleeve is larger than the outer diameter of the connecting rod, so as to provide space for the connecting rod to swing accordingly when it moves with the rocker arm.

3. The seesaw as described in claim 1, characterized in that, The guide groove is a narrow-mouthed groove with a wide inner opening. The guide slider includes a round shaft portion whose outer diameter matches the width of the guide groove opening, and a stop portion that protrudes radially from the end of the round shaft portion and is correspondingly placed inside the guide groove. The stop portion and the guide groove cooperate to form the anti-detachment structure.

4. The seesaw as described in claim 3, characterized in that, The anti-reverse part is a roller assembled at the end of the round shaft part.

5. The seesaw as described in claim 1, characterized in that, The base includes a seat body and an outer sleeve correspondingly fitted onto the top of the seat body and fixed relative to the seat body. The side of the seat body is provided with a step that is higher on the outside and lower on the inside. The height of the higher and lower surfaces of the step fluctuates back and forth in the axial direction with a predetermined range. The inner diameter of the outer sleeve is larger than the outer diameter of the section of the seat body located above the step. The height of the bottom surface of the sleeve wall in the axial direction also fluctuates back and forth with a predetermined range and matches the waveform of the higher surface of the step. The bottom surface of the sleeve wall and the higher surface of the step cooperate with each other to form the groove of the guide groove.

6. The seesaw as described in claim 1, characterized in that, The seesaw also includes a balance adjustment device, which comprises: A counterweight bar that is slidably disposed at one end of the rocker arm and extends a predetermined length along the length direction of the rocker arm; A rack fixed to the counterweight and extending along the length of the counterweight; A gear pivotally mounted on the rocker arm at a predetermined position and meshing with the rack; A locking device disposed on the rocker arm and used to lock the counterweight bar when the counterweight bar is moved into place; and A drive handle for driving the gear to rotate.

7. The seesaw as described in claim 6, characterized in that, The rocker arm is a hollow tube with a through hole at a predetermined position on one side of the tube wall. The counterweight, rack, and gear are all assembled inside the hollow cavity of the rocker arm. The drive handle is placed outside the rocker arm and one end extends into the hollow cavity through the through hole and is coaxially connected to the gear.

8. The seesaw as described in claim 6 or 7, characterized in that, The rocker arm is also provided with several support rollers located at the bottom of the counterweight bar to support and guide the sliding of the counterweight bar, and several guide rollers located on opposite sides of the counterweight bar to guide the sliding of the counterweight bar.

9. The seesaw as described in claim 6, characterized in that, The two ends of the sliding stroke of the counterweight bar correspond to the end of the counterweight bar away from the horizontal axis located at the end of the rocker arm away from the horizontal axis, and the counterweight bar spanning across the two sides of the horizontal axis and symmetrically distributed relative to the horizontal axis.

10. The seesaw as described in claim 6, characterized in that, The drive handle is a crank or a turntable.

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