A multifunctional fitness board

Abstract

The multifunctional fitness board of the present invention comprises: a flat plate and a skateboard A, a skateboard B, the flat plate is provided with a first slide rail and a second slide rail which are parallel to each other, the two ends of the skateboard A, the skateboard B are provided with a first sliding part and a second sliding part respectively, when the skateboard A, the skateboard B are in a horizontal state, the first sliding part and the second sliding part of the skateboard A, the skateboard B are respectively slidably matched with the first slide rail and the second slide rail, when the skateboard A, the skateboard B are in a vertical state, the first sliding part and the second sliding part of the skateboard A are slidably matched with the first slide rail, and the first sliding part and the second sliding part of the skateboard B are slidably matched with the second slide rail. The multifunctional fitness board of the present invention has multiple functions such as push-ups, sit-ups, abdominal exercises, knee bending exercises, back exercises, leg exercises, leg stretching, etc., with a simple structure, convenient and practical, and a wide range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of fitness equipment, in particular to a multifunctional fitness board. Background Art

[0002] With the continuous progress of society and the improvement of living standards, the demand for health and the importance of physical exercise have reached an unprecedented level from the country to the general public. In real life, due to factors such as high work pressure and little free time, it is difficult for many people to take out special time to exercise, and going to a professional gym is even more of an unattainable luxury. The current fitness equipment on the market is either too large and too professional, which not only occupies a large indoor space, but is also not suitable for ordinary families and other non-professional fitness personnel; or it has a single function and cannot achieve a good exercise effect.

[0003] See also Figure 1 , the Chinese utility model patent with announcement number CN208065677U discloses a multifunctional arm and leg beauty machine. The multifunctional arm and leg beauty machine of the utility model includes a support frame, a handle frame, a left slide rail, a right slide rail, a left pedal and a right pedal. The support frame includes a support tube and a base frame. The base frame is composed of a cross bar and a connecting rod. The connecting rod is vertically fixed in the middle position of the cross bar to form a T-shape. The left slide rail and the right slide rail are respectively fixed with a positioning sleeve. The positioning sleeve is sleeved on the connecting rod. The left pedal and the right pedal are respectively arranged on the left slide rail and the right slide rail; the handle frame is composed of a horizontal handle, two L-shaped handles and a card strip. The multifunctional arm and leg beauty machine of the utility model has a simple and reasonable structural design, is easy to use, can exercise the arms and legs of the athlete at the same time, and is easy to place, reduces space occupancy, and has good promotion and application value. However, the multifunctional arm and leg beauty machine can only perform splits on the legs, and has a single function. Summary of the invention

[0004] The object of the present invention is to provide a novel multifunctional fitness board, which has the advantages of diverse functions, simple structure, practicality, convenience and flexibility, space saving and wide application range.

[0005] To achieve the above advantages, the multifunctional fitness board provided by the present invention includes a flat plate and skateboards A and B. The flat plate is provided with a first slide rail and a second slide rail which are parallel to each other. The skateboards A and B are provided with a first sliding part and a second sliding part at both ends respectively. When the skateboards A and B are in a horizontal state, the first sliding part and the second sliding part of the skateboards A and B are respectively slidably matched with the first slide rail and the second slide rail. When the skateboards A and B are in a vertical state, the first sliding part and the second sliding part of the skateboard A are slidably matched with the first slide rail, and the first sliding part and the second sliding part of the skateboard B are slidably matched with the second slide rail.

[0006] In one embodiment of the present invention, the first sliding part and the second sliding part are respectively a pair of universal wheels.

[0007] In one embodiment of the present invention, the first slide rail and the second slide rail are respectively a pair of slide grooves.

[0008] In one embodiment of the present invention, both ends and sides of the skateboard A and skateboard B are respectively provided with a vertical state connecting portion and a horizontal state connecting portion for detachably connecting with an elastic rope.

[0009] In one embodiment of the present invention, the first guide wheel, the first elastic rope connecting part, the second elastic rope connecting part, the second guide wheel, the third guide wheel, the third elastic rope connecting part, the fourth elastic rope connecting part, and the fourth guide wheel are respectively provided next to the first slide rail and the second slide rail from front to back.

[0010] In one embodiment of the present invention, an armrest is provided at the front end of the flat panel, an armrest connecting seat is provided at the front end of the flat panel, the armrest is hinged to the armrest connecting seat, the armrest connecting seat is provided with a plurality of angle adjustment holes, and the armrest is provided with connecting through holes corresponding to the angle adjustment holes. When one of the angle adjustment holes corresponds to the connecting through holes, a pin can be used to fix the armrest and the armrest connecting seat.

[0011] In one embodiment of the present invention, a movable rod extending forward and downward is hinged in the middle of the armrest, a roller is provided at the lower end of the movable rod, and an elastic connection rope is provided between the lower end of the movable rod and the armrest or the flat plate.

[0012] In one embodiment of the present invention, a sit-up cross bar is fixed to the lower portion of the armrest, and a plurality of backrest cross bars are provided in the middle portion of the armrest.

[0013] In one embodiment of the present invention, a flat plate fixing recess is provided at the front, middle or rear portion of the flat plate, and the slide plate A and / or slide plate B are provided with a slide plate fixing recess corresponding to the flat plate fixing recess, and the slide plate A or slide plate B can be axially fixed to the flat plate in cooperation with a limit block partially accommodated in the flat plate fixing recess and partially accommodated in the slide plate fixing recess.

[0014] In one embodiment of the present invention, flexible pads are detachably mounted on the upper surfaces of the skateboards A and B.

[0015] The multifunctional fitness board of the present invention has multiple functions such as push-ups, sit-ups, abdominal exercises, knee flexion exercises, back exercises, leg exercises, leg stretching, etc. It has a simple structure, is convenient and practical, and has a wide range of applications. The board is foldable and the armrests are detachable, saving packaging and transportation space.

[0016] In the present invention, a ball is plugged at the end of the elastic rope main body to form an enlarged portion, and the connecting body is provided with a clamping hole and an insertion hole, and a through groove is provided between the insertion hole and the clamping hole to allow the elastic rope main body to pass through. After the enlarged portion passes through the insertion hole, the enlarged portion is moved to allow the elastic rope main body to pass through the through groove, and the enlarged portion abuts against the clamping hole, which facilitates the connection and disassembly between the elastic rope main body and the connecting body, so that the connecting body can be connected to elastic rope main bodies of different specifications (i.e., different elastic forces) to meet the needs of different groups of people for the required exercise.

[0017] In the present invention, the flat folding structure can tighten the plates by using the switch of the tensioning assembly, so that the connection between the plates is stable during use; when the switch is released, the tenon of the front plate can be separated from the mortise of the rear plate, which facilitates the folding, storage and transportation of the plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a structural schematic diagram of an existing multifunctional folding fitness board.

[0019] Figure 2 Shown is a schematic structural diagram of a multifunctional fitness board according to a first embodiment of the present invention.

[0020] Figure 3 Shown Figure 2 A schematic structural diagram of a flat plate of a multifunctional fitness board.

[0021] Figure 4 Shown Figure 3 A partial enlarged view of F1.

[0022] Figure 5 Shown Figure 3 A partial enlarged view of F2.

[0023] Figure 6 Shown Figure 3 Exploded diagram of the hinge of the multi-function fitness board.

[0024] Figure 7 Shown Figure 3 An exploded diagram of the switch of the multi-function fitness board.

[0025] Figure 8 Shown Figure 3 A schematic diagram of the partial structure of the bottom of the multifunctional fitness board.

[0026] Fig. 9 Shown Figure 3 A top view of a board body of a multifunctional fitness board.

[0027] Fig.10 Shown Fig. 9A schematic structural diagram of the first elastic rope connecting part, the second elastic rope connecting part, the third elastic rope connecting part and the fourth elastic rope connecting part of the board body of the multifunctional fitness board.

[0028] Fig.11 Shown Figure 3 A schematic diagram of the structure of a skateboard and a flexible pad of a multifunctional fitness board.

[0029] Fig.12 Shown Figure 3 A schematic structural diagram of the front portion of a flat plate of a multifunctional fitness board.

[0030] Fig.13 Shown Fig.12 A partial enlarged view of F3.

[0031] Fig.14 Shown Figure 3 A structural schematic diagram of a skateboard and a flexible pad of a multifunctional fitness board from another perspective.

[0032] Fig.15 Shown Fig.14 Schematic diagram of the horizontal connection state of the skateboard and the elastic rope of the multifunctional fitness board.

[0033] Fig.16 Shown Fig.14 Schematic diagram of the vertical connection state of the skateboard and the elastic rope of the multifunctional fitness board.

[0034] Fig.17 Shown Figure 2 A schematic cross-sectional view of the end of the elastic rope of the multi-functional fitness board.

[0035] Fig.18 The diagram is a schematic structural diagram of a multifunctional fitness board according to a second embodiment of the present invention, in which the board body is divided into three parts.

[0036] Fig.19 The diagram is a schematic structural diagram of a multifunctional fitness board according to a third embodiment of the present invention, in which the board body is composed of five pieces.

[0037] Fig. 20 The figure shows the use state of the multifunctional fitness board of the present application in a vertical position.

[0038] Fig.21 The figure shows the initial state of the multifunctional fitness board of the present application with the skateboard placed horizontally and the pins removed.

[0039] Fig. 22 Shown Fig.21 A schematic diagram of the state of the multifunctional fitness board after the skateboard is placed horizontally and the back of the skateboard is pressed down with the pins removed.

[0040] Fig.23The figure shows a schematic diagram of a state where the skateboard of the multifunctional fitness board of the present application is placed horizontally and pulled toward the middle by an elastic rope.

[0041] Fig.24 The figure shows a schematic diagram of a state where the skateboard of the multifunctional fitness board of the present application is placed horizontally and pulled toward both ends by elastic ropes.

[0042] Fig.25 Shown is a schematic diagram of a folded state of the multifunctional fitness board of the present application.

[0043] Fig.26 Shown is a schematic diagram of performing knee bending exercises on the multifunctional fitness board of the present application.

[0044] Fig. 27 Shown is a schematic diagram of performing abdominal exercises with legs suspended in the air on the multifunctional fitness board of the present application.

[0045] Fig.28 Shown is a schematic diagram of performing abdominal exercises similar to those of an ab wheel on the multifunctional fitness board of the present application. DETAILED DESCRIPTION

[0046] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined utility model purpose, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0047] See also Figure 2 The multifunctional fitness board of this embodiment includes a flat plate 1, a slide plate A, a slide plate B, and an armrest 3. For the convenience of description, the end of the flat plate 1 close to the armrest 3 is called the front end, and the end away from the armrest 3 is called the rear end.

[0048] See also Figure 3-6 The flat plate 1 includes a plurality of plate bodies 12 connected by hinges 11, and a tensioning assembly 13 for tensioning the plate bodies 12. The flat plate 1 is provided with a first slide rail 14 and a second slide rail 15 which are parallel to each other. A wire groove 16 for accommodating a rope 132 of the tensioning assembly 13 is provided on the lower surface of the flat plate 1. The plate bodies 12 are at least two pieces. Preferably, the plate bodies 12 are four pieces.

[0049] See also Figure 4 The front and rear surfaces of the plate body 12 are respectively provided with a mortise 120 and a tenon 121 , and the tenon 121 of the front plate body 12 is inserted and matched with the mortise 120 of the rear plate body 12 .

[0050] See also Figure 6The hinge 11 is located on both sides of the plate body 12, and is used to hinge the plate body 12 with another plate body 12. The hinge 11 includes a metal sheet 112, a pair of connecting seats 113, and a bolt 114. The pair of connecting seats 113 are respectively connected and fixed to the front plate body 12 and the rear plate body 12. The metal sheet 112 is provided with a through groove 112a, and the connecting seat 113 has an anti-jumping protrusion 113a accommodated in the through groove 112a, and the width of the anti-jumping protrusion 113a is the same as the width of the middle part of the through groove 112a. The bolt 114 is connected and fixed to the connecting seat 113, and the bolt 114 is used to press the metal sheet 112, and the two ends of the through groove 112a have an enlarged portion 112b, and the enlarged portion 112b allows the anti-jumping protrusion 113a to rotate.

[0051] See also Figure 5 , Figure 7-8 The tensioning assembly 13 includes a switch 131 disposed at the frontmost plate 12 and a rope 132 for connecting the switch 131 and the rearmost plate 12. A blind hole 131a is provided on the side of the switch 131, and a spring h1 and a ball q1 are provided in the blind hole 131a. The frontmost plate 12 is provided with a recess 123 for accommodating part of the ball q1. When the switch 131 is rotated to make the rope 132 tighten the frontmost plate 12 and the rearmost plate 12, the recess 123 corresponds to the position of the ball q1. The switch 131 is a cylindrical structure with a straight-line torsion portion 131b on the upper surface. A column 132a is fixed at the rear end of the rope 132, and a compression spring h2 is provided between the column 132a and the rearmost plate 12. Specifically, the rear end of the rope 132 is covered with a solenoid 132b, the column 132a is fixed to the rear end of the rope 132, one end of the solenoid 132b abuts against the column 132a, the solenoid 132b is connected to a nut 132c, one end of the compression spring h2 abuts against the nut 132c, and the other end abuts against the rear end plate 12. When the rope 132 tightens the front end plate 12 and the rear end plate 12, the compression spring h2 is compressed to maintain the tension of the rope 132. In other embodiments, the switch 131 can also be set at the rear end plate 12, and the rope 132 is used to connect the switch 131 and the front end plate 12.

[0052] See also Fig. 9 The first guide wheel 21, the first elastic cord connection part 22, the second elastic cord connection part 23, the second guide wheel 24, the third guide wheel 25, the third elastic cord connection part 26, the fourth elastic cord connection part 27, and the fourth guide wheel 28 are respectively arranged next to the first slide rail 14 and the second slide rail 15 from front to back. Preferably, the first slide rail 14 and the second slide rail 15 are respectively a pair of slide grooves. In other embodiments of the present application, the first slide rail 14 and the second slide rail 15 can also be one slide groove or three slide grooves respectively.

[0053] See also Fig.10The first elastic cord connection part 22, the second elastic cord connection part 23, the third elastic cord connection part 26, and the fourth elastic cord connection part 27 have the same structure and include: a recess 200 formed on the flat plate 1, and a through slot 201 located beside the recess 200 for allowing the elastic cord body 71 to pass through. The recess 200 is used to accommodate the enlarged portion 72 of the elastic cord 7.

[0054] See also Figure 8 , Fig.10 A plate fixing recess 17 is provided at the front, middle or rear of the plate 1, and a slide plate A and / or slide plate B is provided with a slide plate fixing recess S1 corresponding to the plate fixing recess 17. The slide plate A or the slide plate B can be axially fixed to the plate 1 in cooperation with a limiting block (not shown) which is partially accommodated in the plate fixing recess 17 and partially accommodated in the slide plate fixing recess S1.

[0055] See also Figure 12-13 The front end of the flat plate 1 is provided with an armrest connection seat 18. The armrest 3 is hinged to the armrest connection seat 18. The armrest connection seat 18 is provided with a plurality of angle adjustment holes 180. The armrest 3 is provided with a connection through hole 30 corresponding to the angle adjustment hole 180. When one of the angle adjustment holes 180 corresponds to the connection through hole 30, the armrest 3 and the armrest connection seat 18 can be fixed with the pin 5. The angle adjustment of the armrest 3 can adapt to different users. The armrest connection seat 18 is rotatably connected to a rotating column 181, and the lower end surface of the armrest 3 has an arc surface 36 that fits the side of the rotating column 181.

[0056] A movable rod 31 extending forward and downward is hinged in the middle of the armrest 3, and a transverse wheel rod 311 is provided at the lower end of the movable rod 31, and rollers 311a are provided at both ends of the transverse wheel rod 311. An elastic connecting rope 312 is provided between the lower end of the movable rod 31 and the armrest 3 or the flat plate 1. A sit-up cross bar 32 is fixed at the lower part of the armrest 3, and a plurality of backrest cross bars 33 are provided in the middle of the armrest 3. An annular gripping portion 34 is provided at the upper end of the armrest 3, and a plurality of hinge points 35 that can be hinged to the movable rod 31 are provided on the armrest 3.

[0057] The handrail 3 can also be formed by a plurality of pipe bodies 300 being connected to each other by sockets. This structure allows the handrail 3 to be adjusted in height as required, and saves packaging and transportation space.

[0058] See also Fig.11 , Fig.14The structures of skateboard A and skateboard B in the present application are the same, and both are mirror-symmetrical when used. The lower surface of skateboard A is provided with a first sliding part S2 and a second sliding part S3 corresponding to the first slide rail 14 and the second slide rail 15, and the edge of the upper surface of skateboard A protrudes upward to accommodate the flexible pad 6, and the flexible pad 6 is detachably connected to skateboard A. When skateboard A does not have the flexible pad 6, it is used to contact the user's feet. When skateboard A is placed with the flexible pad 6, it can contact the user's legs, buttocks, knees, back, hands, and elbows. The protrusion a1 on the edge of skateboard A can form a depression to accommodate the flexible pad 6 or the foot. Four mounting posts 61 are provided on the lower surface of the flexible pad 6, and skateboard A is provided with corresponding blind holes or through holes a2.

[0059] Preferably, the first sliding part S2 and the second sliding part S3 are a pair of universal wheels. In other embodiments of the present application, the first sliding part S2 and the second sliding part S3 can also be sliders.

[0060] When the slide plates A and B are in a horizontal state, the first sliding portion S2 and the second sliding portion S3 of the slide plates A and B respectively slide with the first slide rail 14 and the second slide rail 15. When the slide plates A and B are in a vertical state, the first sliding portion S2 and the second sliding portion S3 of the slide plates A slide with the first slide rail 14, and the first sliding portion S2 and the second sliding portion S3 of the slide plates B slide with the second slide rail 15.

[0061] See also Figure 14-16 The two ends and sides of the skateboard A and skateboard B are respectively provided with a vertical state connection part L1 and a horizontal state connection part L2 for detachable connection with the elastic rope 7. There are three states of connection between the skateboard A and the elastic rope 7: the first state is that the skateboard A is vertically placed, and there are elastic ropes 7 at both ends of the skateboard A, wherein the elastic rope t1 is fixed to the rear end of the skateboard A and then connected and fixed to the third elastic rope connection part 26 from above the flat plate 1 through the fourth guide wheel 28 and from below the flat plate 1, and the elastic rope t2 is fixed to the front end of the skateboard A and then connected and fixed to the second elastic rope connection part 23 from above the flat plate 1 through the first guide wheel 21 and from below the flat plate 1; the second state is that the skateboard A is vertically placed, and there is an elastic rope 7 on one side; the third state is that the skateboard A is horizontally placed, and there is an elastic rope 7 on one side.

[0062] See also Figure 16-17 The elastic cord 7 is used to be detachably connected to the connecting body, and includes an elastic cord body 71 and an enlarged portion 72. The enlarged portion 72 is provided at the end of the elastic cord body 71, and the connecting body is provided with an insertion hole 81 and a clamping hole 82. The insertion hole 81 allows the enlarged portion 72 to pass through, and the clamping hole 82 does not allow the enlarged portion 72 to pass through. There is a through groove 83 between the insertion hole 81 and the clamping hole 82 to allow the elastic cord 7 to pass through. After the enlarged portion 72 passes through the insertion hole 81, the enlarged portion 72 is moved to allow the elastic cord 7 to pass through the through groove 83, and the enlarged portion 72 abuts against the clamping hole 82. A wire groove 84 for accommodating the elastic cord 7 is provided next to the clamping hole 82.

[0063] Furthermore, the elastic cord 7 is a hollow tubular structure. A sphere q2 is plugged at the end of the elastic cord body 71 to form an enlarged portion 72. A heat shrink tube 73 is provided on the outer sleeve of the end of the elastic cord 7, and the heat shrink tube 73 fits with the end of the elastic cord 7. In this embodiment, the skateboard A and the skateboard B serve as connectors connected to the elastic cord 7. Preferably, the elastic cord body 71 is made of rubber. The sphere q2 is made of plastic or metal. The heat shrink tube 73 is sleeved outside the end of the elastic cord body 71 where the sphere q2 is plugged. The heat shrink tube 73 may not fit with the end of the elastic cord 7. In addition, the elastic cord 7 of this structure can also be applied to other connectors, such as a chest expander with an elastic cord 7.

[0064] See also Fig.18 In the second embodiment of the present application, the plate body 12 is composed of three pieces.

[0065] See also Fig.19 In the third embodiment of the present application, the plate body 12 is composed of five pieces.

[0066] See also Figure 20-25 In this application, it should be noted that when the hands, knees, and buttocks are used to contact the skateboard, the flexible pad 6 should be placed on the skateboard, and when the feet are used to contact the skateboard, the flexible pad 6 should be removed. The multifunctional fitness board in this application can be used for the following exercises, but is not limited to this:

[0067] In the vertical mode, both ends of the slide board A and the slide board B are connected with elastic ropes 7, which play a role in resetting. The user can place both hands or feet on the slide board A and the slide board B respectively, and can slide the slide boards A and B back and forth alternately, do cross steps or crawling exercises, and exercise the lower limbs or upper limbs. When doing crawling exercises, the feet can be placed on the ground or on the horizontal bar in the middle of the handrail 3;

[0068] Skateboard A and skateboard B can also be used as yoga mats. For example, in a vertical state, the left foot is placed on skateboard A, and the right hand is placed on skateboard B, with skateboard A at the rear end and skateboard B at the front end, and the right foot and left hand are suspended in the air to control balance.

[0069] In the horizontal mode, skateboard A is placed on a flexible pad 6, and the user can sit on skateboard A and put his feet on skateboard B, so that the distance between skateboards A and B can change. The user can constantly bend his knees and tighten his abdomen to strengthen his abdomen. The elastic rope 7 can pull skateboards A and B toward the center to assist, or pull skateboards A and B toward the ends to increase the intensity of exercise. Skateboard B can also be fixed at the rear end, and the user can sit on skateboard B and slide skateboard A with his feet. Skateboard A can also be fixed at the front end, and the user can sit on skateboard A and slide skateboard B with his feet, so that the user can lean back against the handrail 3;

[0070] The user can remove the pin 5 at the hinge between the armrest 3 and the armrest connecting seat 18, fix the skateboard A and / or skateboard B to the front end of the flat plate 1, sit on the skateboard B with the back against the armrest 3, and use the back to press down on the armrest 3 to exercise the back and abdomen. The elastic connecting rope 312 of the armrest 3 can play a role in assisting. Figure 21-22 ;

[0071] The user can sit on the slides A and B, hook his feet on the sit-up bar 32 at the lower end of the handrail 3, and bend his knees to slide the slides A and B. Fig.26 ;

[0072] The user can fix the skateboard B axially in the middle of the flat plate 1, hook the feet on the sit-up crossbar 32, and do sit-up exercises;

[0073] The user can fix the slides A and B axially in the middle of the flat plate 1, sit sideways on the slides A and B, lift the legs so that the legs are suspended in the air to do stretching and contraction exercises, and exercise the abdomen. Fig. 27 ;

[0074] The user can also place the ankle on the horizontal bar in the middle of the handrail 3, put the hands on the skateboard A and arch the waist to control the skateboard A to slide forward and backward, or put the feet or knees on the skateboard A, put the hands on the skateboard B and arch the waist to control the skateboard B to slide forward and backward (similar to the ab wheel), such as Fig.28 ;

[0075] The user can also remove the flexible pad 6 and place both feet on the skateboard A and skateboard B respectively, so that the distance between skateboard A and skateboard B changes, and the user can do splits continuously to exercise the thighs. The elastic rope 7 contracts inwards to play a boosting role. The elastic rope 7 can also pull the skateboards A and B to both ends to increase the intensity of the exercise. Figure 23-24 .

[0076] The skateboard A can also be fixed to the rear end of the flat plate 1, and the feet can be placed on the skateboard B, so that the distance between the skateboards A and B can be changed. The user can continuously bend the knees and tighten the abdomen, which can play a role in strengthening the abdomen.

[0077] When not in use, the adjacent plate bodies 12 are pulled to disengage the tenon 121 of the front plate body from the tenon hole of the rear plate body 12. At this time, the anti-jump protrusion 113a enters the enlarged portion 112b and is in a rotatable state, so that the adjacent plate bodies 12 can be folded, such as Fig.25 , achieving the effect of reducing the occupied space.

[0078] The multifunctional fitness board of the present invention has multiple functions such as push-ups, sit-ups, abdominal exercises, knee flexion exercises, back exercises, leg exercises, leg stretching, etc. It has a simple structure, is convenient and practical, and has a wide range of applications. The board is foldable and the armrests are detachable, saving packaging and transportation space.

[0079] In the present application, a spherical body is plugged at the end of the elastic rope main body to form an enlarged portion, and the connecting body is provided with a clamping hole and an insertion hole, and a through groove is provided between the insertion hole and the clamping hole to allow the elastic rope main body to pass through. After the enlarged portion passes through the insertion hole, the enlarged portion is moved to allow the elastic rope main body to pass through the through groove, and the enlarged portion abuts against the clamping hole, thereby facilitating the connection and disassembly between the elastic rope main body and the connecting body, so that the connecting body can be connected to elastic rope main bodies of different specifications (i.e., different elastic forces) to meet the needs of different groups of people for the required exercise.

[0080] In the present invention, the flat folding structure can tighten the plates by using the switch of the tensioning assembly, so that the connection between the plates is stable during use; when the switch is released, the tenon of the front plate can be separated from the mortise of the rear plate, which facilitates the folding, storage and transportation of the plates.

[0081] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A multifunctional fitness board, characterized in that: It comprises a flat plate and a slide plate A and a slide plate B. The flat plate is provided with a first slide rail and a second slide rail which are parallel to each other. The slide plates A and B are provided with a first sliding part and a second sliding part at both ends. When the slide plates A and B are in a horizontal state, the first sliding part and the second sliding part of the slide plates A and B are respectively slidably matched with the first slide rail and the second slide rail. When the slide plates A and B are in a vertical state, the first sliding part and the second sliding part of the slide plates A are slidably matched with the first slide rail, and the first sliding part and the second sliding part of the slide plates B are slidably matched with the second slide rail. The flat plate includes a plurality of plate bodies connected by hinges and a tensioning assembly for tensioning the plate bodies; The front and rear surfaces of the plate body are respectively provided with mortises and tenons, and the tenons of the front plate body are inserted and matched with the mortises of the rear plate body; The hinges are located on both sides of the plate body and are used to hinge the plate body with another plate body; The hinge comprises a metal sheet, a pair of connecting seats, and a bolt; the pair of connecting seats are respectively connected and fixed to the front plate body and the rear plate body; the metal sheet is provided with a through groove, and the connecting seat has an anti-jumping protrusion accommodated in the through groove; the bolt is connected and fixed to the connecting seat, and the bolt is used to press the metal sheet, and the two ends of the through groove have enlarged parts, and the enlarged parts allow the anti-jumping protrusion to rotate; The tensioning assembly includes a switch arranged at the frontmost plate body and a rope for connecting the switch and the rearmost plate body; a blind hole is provided on the side of the switch, a spring and a ball are provided in the blind hole, and a depression for accommodating part of the ball is provided on the frontmost plate body. When the switch rotates to make the rope tighten the frontmost plate body and the rearmost plate body, the depression corresponds to the position of the ball; a column is fixed at the rear end of the rope, and a compression spring is provided between the column and the rearmost plate body; When not in use, the adjacent plates are pulled to disengage the tenon of the front plate from the tenon of the rear plate. At this time, the anti-jump protrusion enters the enlarged portion and is in a rotatable state, and the adjacent plates can be folded.

2. The multifunctional fitness board according to claim 1, characterized in that: The first sliding part and the second sliding part are respectively a pair of universal wheels.

3. The multifunctional fitness board according to claim 2, characterized in that: The first slide rail and the second slide rail are respectively a pair of slide grooves.

4. The multifunctional fitness board according to claim 1, characterized in that: Both ends and sides of the skateboard A and skateboard B are respectively provided with a vertical state connecting portion and a horizontal state connecting portion for detachably connecting with the elastic rope.

5. The multifunctional fitness board according to claim 1, characterized in that: The first guide wheel, the first elastic rope connecting part, the second elastic rope connecting part, the second guide wheel, the third guide wheel, the third elastic rope connecting part, the fourth elastic rope connecting part and the fourth guide wheel are respectively arranged next to the first slide rail and the second slide rail from front to back.

6. The multifunctional fitness board according to claim 1, characterized in that: An armrest is provided at the front end of the flat plate, and an armrest connecting seat is provided at the front end of the flat plate. The armrest is hinged to the armrest connecting seat, and the armrest connecting seat is provided with a plurality of angle adjustment holes. The armrest is provided with connecting through holes corresponding to the angle adjustment holes. When one of the angle adjustment holes corresponds to the connecting through holes, a pin can be used to fix the armrest and the armrest connecting seat.

7. The multifunctional fitness board according to claim 6, characterized in that: A movable rod extending forward and downward is hinged in the middle of the armrest, a roller is arranged at the lower end of the movable rod, and an elastic connecting rope is arranged between the lower end of the movable rod and the armrest or the flat plate.

8. The multifunctional fitness board according to claim 6, characterized in that: A sit-up cross bar is fixed at the lower part of the armrest, and a plurality of backrest cross bars are arranged at the middle part of the armrest.

9. The multifunctional fitness board according to claim 1, characterized in that: The front, middle or rear part of the flat plate is provided with a flat plate fixing recess, and the slide plate A and / or slide plate B are provided with a slide plate fixing recess corresponding to the flat plate fixing recess. The slide plate A or slide plate B can be axially fixed to the flat plate in cooperation with a limit block which is partially accommodated in the flat plate fixing recess and partially accommodated in the slide plate fixing recess.

10. The multifunctional fitness board according to claim 1, characterized in that: Flexible pads are detachably mounted on the upper surfaces of the slide plates A and B.

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