Sit-up board

Abstract

The utility model discloses a sit-up board. The sit-up board comprises a first supporting part and a second supporting part, wherein the first supporting part is used for supporting the body of an athlete during sit-up and at least comprises a first sit-up board; the second supporting part is used for supporting the body of the athlete during sit-up, and the second supporting part at least comprises a second sit-up plate; one end of the flexible damping part is rotationally connected with one end of the first supporting part, and the other end of the flexible damping part is rotationally connected with one end of the second supporting part; wherein the sit-up plate comprises a folding state and a using state, and in the folding state, the upper surface of the first sit-up plate is opposite to the upper surface of the second sit-up plate, or the lower surface of the first sit-up plate is opposite to the lower surface of the second sit-up plate; when the sit-up board is used, the upper surface of the first sit-up board and the upper surface of the second sit-up board are located on the same horizontal plane, so that the sit-up board can be stored in a folded state after being used, the occupied space is reduced, and the sit-up board is convenient to carry and carry after being folded.

Description

Technical Field

[0001] The utility model relates to the technical field of sports equipment, in particular to a sit-up board. Background Art

[0002] Sit-ups, as a form of physical exercise, have become one of the items in physical education exams. When doing sit-ups, one needs to lie down with legs bent and hands placed behind the head to switch between lying and sitting positions.

[0003] At present, in physical education examinations, the sit-up board commonly used is a fixed structure and cannot be folded. After use, it takes up a large storage space, is inconvenient to carry, and is inconvenient to transport.

[0004] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a sit-up board to solve the problems in the prior art that the sit-up board with a fixed structure occupies a large storage space after use, is inconvenient to carry, and is inconvenient to transport.

[0006] The utility model provides a sit-up board, comprising:

[0007] A first support part for supporting the athlete's body during sit-ups, wherein the first support part at least comprises a first sit-up board;

[0008] A second support part for supporting the athlete's body during sit-ups, the second support part comprising at least a second sit-up board;

[0009] a flexible damping member, one end of which is rotatably connected to one end of the first supporting portion, and the other end of which is rotatably connected to one end of the second supporting portion;

[0010] Among them, the sit-up board includes a folding state and a use state. In the folding state, the upper surface of the first sit-up board is opposite to the upper surface of the second sit-up board, or the lower surface of the first sit-up board is opposite to the lower surface of the second sit-up board; in the use state, the upper surface of the first sit-up board and the upper surface of the second sit-up board are on the same horizontal plane.

[0011] The utility model is further configured that the first support portion further comprises: a first support frame, and the first lifting plate is arranged on the first support frame;

[0012] The second supporting part also includes a second supporting frame, and the second lifting plate is arranged on the second supporting frame.

[0013] The utility model is further arranged that one end of the flexible damping member is rotatably connected to the first support frame via a connecting member, and the other end of the flexible damping member is rotatably connected to the second support frame via another connecting member.

[0014] The utility model is further provided that the connecting member comprises: a rotating shaft with an external thread at the end, one end of the flexible damping member is rotatably connected to the first support frame via a rotating shaft, and the other end of the flexible damping member is rotatably connected to the second support frame via another rotating shaft;

[0015] Wherein, a compression platform for compressing the flexible damping element is arranged at one end of the rotating shaft away from the external thread.

[0016] The utility model is further configured that the first support frame comprises: a first main rod body;

[0017] The first lifting plate is arranged on the first main rod body, and a plurality of first reinforcing beams for reinforcing and supporting the first lifting plate are embedded on the first main rod body.

[0018] The utility model is further arranged that a first mounting ear is arranged on the first main rod body, and one end of the flexible damping member is rotatably connected to the first mounting ear via the rotating shaft.

[0019] The utility model is further configured that the first support frame also includes: a foot press frame for providing a support point for the athlete through the athlete's foot surface during sit-ups, a first support member and a telescopic joint for supporting the athlete's fibula and the first main rod body during sit-ups;

[0020] The telescopic joint is arranged on an end of the first main rod body away from the first mounting ear, and the telescopic joint can be telescoped along the length direction of the first main rod body;

[0021] The presser foot stand and the support member are respectively arranged on the telescopic joint, and the support member is arranged at the end of the telescopic joint.

[0022] The utility model is further configured that the second support frame comprises: a second main rod body;

[0023] The second lifting plate is arranged on the second main rod body, and a plurality of second reinforcing beams for reinforcing and supporting the second lifting plate are embedded on the second main rod body.

[0024] The utility model is further configured that a second mounting ear is provided on the second main rod body, and the other end of the flexible damping member is rotatably connected to the second mounting ear via the rotating shaft;

[0025] A second supporting member for supporting the second main rod is disposed at one end of the second main rod away from the second mounting ear.

[0026] The utility model is further arranged that the flexible damping member is a damping sheet.

[0027] Beneficial effects:

[0028] The utility model provides a sit-up board, comprising a first supporting part for supporting an athlete's body during sit-ups, the first supporting part at least comprising a first sit-up board; a second supporting part for supporting an athlete's body during sit-ups, the second supporting part at least comprising a second sit-up board; a flexible damping member, one end of the flexible damping member being rotatably connected to one end of the first supporting part, and the other end of the flexible damping member being rotatably connected to one end of the second supporting part; wherein the sit-up board comprises a folding state and a use state, in which, in the folding state, an upper surface of the first sit-up board is opposite to an upper surface of the second sit-up board, or a lower surface of the first sit-up board is opposite to a lower surface of the second sit-up board; in the use state, an upper surface of the first sit-up board and an upper surface of the second sit-up board are on the same horizontal plane. In the technical solution of the utility model, since one end of the first support part is rotatably connected to one end of the flexible damping member, and one end of the second support part is rotatably connected to the other end of the flexible damping member, when the sit-up board is used, the first support part and the second support part can be rotated so that the upper surface of the first sit-up board and the upper surface of the second sit-up board are in the same horizontal plane. After the sit-up board is used, the first support part and the second support part can be rotated so that the upper surface of the first sit-up board and the upper surface of the second sit-up board are opposite to each other, or the lower surface of the first sit-up board and the lower surface of the second sit-up board are opposite to each other, so that they are in a folded state, so that the sit-up board can be stored in a folded state after use, the space occupied is reduced, and it is convenient to carry and easy to transport after folding. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary personnel in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 It is a structural diagram of a sit-up board of the utility model.

[0031] Figure 2 It is a structural diagram of the first supporting part in one embodiment of the utility model.

[0032] Figure 3 It is a structural diagram of the second supporting part in one embodiment of the utility model.

[0033] Figure 4 It is a structural diagram of the first supporting frame in one embodiment of the utility model.

[0034] Figure 5 It is a structural diagram of the first lifting plate in one embodiment of the utility model.

[0035] Figure 6 It is a structural diagram of the second support frame in one embodiment of the utility model.

[0036] Figure 7 It is a structural diagram of the second lifting plate in one embodiment of the utility model.

[0037] Figure 8 It is a structural diagram of a damping plate in one embodiment of the utility model.

[0038] Fig. 9 This is a structural diagram of the rotating shaft and threaded connection in one embodiment of the utility model.

[0039] The marks in the accompanying drawings are: 1, first supporting part; 11, first supporting frame; 111, first main rod body; 1111, first mounting ear; 112, first reinforcing beam; 113, telescopic joint; 114, first supporting member; 1141, first plastic cover; 115, footrest; 1151, first column; 1152, first cross column; 1153, first mounting frame; 116, first key; 12, first lifting plate; 121, upper surface of first lifting plate; 2, second supporting part; 21, second supporting frame; 211, second main rod body; 2111, second mounting ear; 212, second reinforcing beam; 213, second supporting member; 2131, second plastic cover; 22, second lifting plate; 221, upper surface of second lifting plate; 3, damping member; 31, damping sheet; 4, connecting member; 41, rotating shaft; 42, compression platform. DETAILED DESCRIPTION

[0040] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0041] like Figure 1 As shown, a sit-up board provided by the utility model can be used in physical education examinations.

[0042] like Figure 1 - Figure 7 As shown, the sit-up board may include a first support portion 1, a second support portion 2 and a flexible damping member 3; the first support portion 1 is used to support the athlete's body during sit-ups, and the first support portion 1 at least includes a first sit-up board 12; the second support portion 2 is used to support the athlete's body during sit-ups, and the second support portion 2 at least includes a second sit-up board 22; one end of the flexible damping member 3 is rotatably connected to one end of the first support portion 1, and the other end of the flexible damping member 3 is rotatably connected to one end of the second support portion 2; wherein the sit-up board includes a folding state and a use state, in the folding state, the upper surface 121 of the first sit-up board is opposite to the upper surface 221 of the second sit-up board, or the lower surface of the first sit-up board is opposite to the lower surface of the second sit-up board; in the use state, the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board are on the same horizontal plane.

[0043] In the present embodiment, since one end of the first support portion 1 is rotatably connected to one end of the flexible damping member 3, and one end of the second support portion 2 is rotatably connected to the other end of the flexible damping member 3, when the sit-up board is used, the first support portion 1 and the second support portion 2 can be rotated so that the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board are in the same horizontal plane. After the sit-up board is used, the first support portion 1 and the second support portion 2 can be rotated so that the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board are opposite to each other, or the lower surface of the first sit-up board and the lower surface of the second sit-up board are opposite to each other, so that they are in a folded state, so that the sit-up board can be stored in a folded state after use, which reduces the space occupied, is convenient to carry, and is convenient to transport after folding.

[0044] The upper surface 121 of the first sit-up board refers to the side that contacts the athlete when the athlete lies on the sit-up board during sit-ups; the lower surface of the first sit-up board refers to the side that is close to the carrier on which the sit-up board is placed when the sit-up board is in use, for example, the side of the sit-up board close to the ground when the sit-up board is placed on the ground. The upper surface 221 of the second sit-up board refers to the side that contacts the athlete when the athlete lies on the sit-up board during sit-ups; the lower surface of the second sit-up board refers to the side that is close to the carrier on which the sit-up board is placed when the sit-up board is in use, for example, the side of the sit-up board close to the ground when the sit-up board is placed on the ground.

[0045] In addition, the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board being on the same horizontal plane is not absolutely horizontal. The same horizontal plane here means that when the athlete lies on the sit-up board in use, there is no height difference between the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board that affects the athlete's sit-ups. For example, there is a 0.1 mm height difference between the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board, which does not affect the athlete's sit-ups. It can be understood that the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board are on the same horizontal plane. For example, when there is a 3 cm height difference between the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board, it may affect the athletes' sit-ups. At this time, it can be understood that the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board are not on the same horizontal plane. When technical personnel in this field understand whether the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board are on the same horizontal plane, they can judge whether the height difference between the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board will affect the athletes' sit-ups after opening the sit-up board during use. No further details will be given here.

[0046] In some embodiments, Figure 1 , Figure 2 As shown, the first support part 1 further includes a first support frame 11 , and a first lifting plate 12 is disposed on the first support frame 11 ; the second support part 2 further includes a second support frame 21 , and a second lifting plate 22 is disposed on the second support frame 21 .

[0047] Furthermore, one end of the flexible damping member 3 may be rotatably connected to the first support frame 11 via a connecting member 4 , and the other end of the flexible damping member 3 may be rotatably connected to the second support frame 21 via another connecting member 4 .

[0048] In some embodiments, Figure 1 , Fig. 9 As shown, the connecting member 4 may include a rotating shaft 41 with an external thread at the end, one end of the flexible damping member 3 is rotatably connected to the first support frame 11 via the rotating shaft 41, and the other end of the flexible damping member 3 is rotatably connected to the second support frame 21 via another rotating shaft 41, wherein a compression platform 42 for compressing the flexible damping member 3 is provided at one end of the rotating shaft 41 away from the external thread.

[0049] In this embodiment, when the flexible damping member 3 is connected to the first support frame 11, a threaded hole can be set on the first support frame 11, and a through hole is set at the end where the flexible damping member 3 is connected to the first support frame 11. The end of the rotating shaft 41 with an external thread passes through the through hole at one end of the flexible damping member 3 and is connected to the threaded hole on the first support frame 11. Similarly, when the flexible damping member 3 is connected to the second support frame 21, the connection method of the flexible damping member 3 and the first support frame 11 is the same as the above-mentioned connection method, which will not be repeated here.

[0050] In this embodiment, since a compression platform 42 for compressing the flexible damping member 3 is provided at one end of the rotating shaft 41 away from the external thread, when the flexible damping member 3 is connected to the first support frame 11 or the second support frame 21, the feed depth of the external thread of the rotating shaft 41 in the threaded hole on the first support frame 11 or the threaded hole on the second support frame 21 can be controlled, so that the compression platform 42 generates a radial force along the radial direction of the rotating shaft 41, thereby changing the friction between the flexible damping member 3 and the first support frame 11 or the second support frame 21. For example, when the friction between the flexible damping member 3 and the first support frame 11 is small (the first support frame 11 after folding), the friction between the flexible damping member 3 and the first support frame 11 is small. The first support frame 11 is easy to rotate relative to the rotating shaft 41), at this time, there is a problem that the sit-up board is automatically opened when not in use due to the easy rotation of the first support frame 11. The friction between the flexible damping member 3 and the first support frame 11 can be adjusted by adjusting the feed depth of the external thread on the rotating shaft 41, so that the first support frame 11 after folding is more stable, and the friction between the second support frame 21 and the flexible damping member 3 is small. The friction between the flexible damping member 3 and the first support frame 11 can be adjusted by adjusting the feed depth of the external thread on the rotating shaft 41, so that the second support frame 21 after folding is more stable.

[0051] Here, it should be noted that when the flexible damping member 3 is connected to the first support frame 11, the friction force between the flexible damping member 3 and the first support frame 11 or the second support frame 21 can be adjusted by adjusting the feed depth of the external thread on the rotating shaft 41 provided with the external thread in the threaded hole. When the sit-up board is in a folded state, the friction force between the flexible damping member 3 and the first support frame 11 or the second support frame 21 makes it necessary to have a certain force to open the sit-up board to the use state, that is, the folded state of the folded sit-up board is more stable due to the friction force.

[0052] In another embodiment, one end of the flexible damping member 3 can also be rotatably connected to the first lifting plate 12, and the other end of the flexible damping member 3 can be rotatably connected to the second lifting plate 22. For details, please refer to the connection method between the above-mentioned flexible damping member 3 and the first support frame 11 or the second support frame 21, which will not be repeated here.

[0053] Specifically, Figure 4As shown, the first support frame 11 may include a first main rod body 111 , on which the first lifting plate 12 is disposed, and on which the first main rod body 111 are embedded a plurality of first reinforcing beams 112 for reinforcing and supporting the first lifting plate 12 .

[0054] In this embodiment, the first main rod body 111 may be but not limited to a square rod. When the first reinforcing beam 112 is provided, the first reinforcing beam 112 may be embedded in the first main rod body 111 in a manner that is but not limited to being perpendicular to the first main rod body 111, wherein the upper surface of the first reinforcing beam 112 embedded in the first main rod body 111 is on the same horizontal plane as the upper surface of the first main rod body 111, that is, the first main rod body 111 and the first reinforcing beam 112 both support the first lifting plate 12.

[0055] Furthermore, when installing the first lifting plate 12, through holes can be respectively set at both ends of each first reinforcement beam 112, and threaded holes are set at corresponding positions on the bottom of the first lifting plate 12, and the first lifting plate 12 is connected to the first reinforcement beam 112 by a bolt.

[0056] In this embodiment, the number of first reinforcing beams 112 may be but not limited to two, and a spacing is provided between the two first reinforcing beams 112. The size of the spacing can be determined by those skilled in the art based on actual needs while satisfying the requirement of supporting the first lifting plate 12, and no further details will be given here.

[0057] In some embodiments, Figure 4 As shown, a first mounting ear 1111 is provided on the first main rod body 111 , and one end of the flexible damping member 3 is rotatably connected to the first mounting ear 1111 via a rotating shaft 41 .

[0058] Specifically, the first mounting ear 1111 is provided with a through hole penetrating through the two sides of the first mounting ear 1111, and one end of the flexible damping member 3 is provided with a through hole corresponding to the through hole on the first mounting ear 1111, that is, the first mounting ear 1111 can be rotatably connected to one end of the flexible damping member 3 through the through hole on the first mounting ear 1111 and the through hole at one end of the flexible damping member 3. Among them, the first mounting ear 1111 can be provided with but not limited to two, and the two first mounting ears 1111 are respectively provided on both sides of the first main rod body 111, and extend out of the first main rod body 111 along the length direction of the first main rod body 111. Further, when the two first mounting ears 1111 are provided, the centers of the through holes on the two first mounting ears 1111 are on the same horizontal line, and the aperture of the through hole is slightly larger than the outer diameter of the rotating shaft 41 but smaller than the outer contour of the compression platform 42. When the flexible damping member 3 is connected to the first main rod body 111, one end of the rotating shaft 41 with an external thread passes through a through hole at one end of a flexible damping member 3, a through hole of a first mounting ear 1111, a through hole of another first mounting ear 1111 and a through hole at one end of another flexible damping member 3 (installed in this order), and then another flexible damping member 3 is extended along the axial direction of the rotating shaft 41, and then, a nut is installed on the end of the rotating shaft 41 with an external thread, so that one end of the flexible damping member 3 is rotatably connected to the first main rod body 111.

[0059] In this embodiment, since a flexible damping member 3 is provided on each first mounting ear 1111, each flexible damping member 3 can generate friction with the first mounting ear 1111 after being subjected to a radial compression force along the rotating shaft 41, thereby increasing the adjustment range of the friction force.

[0060] In some embodiments, Figure 4 As shown, the first support frame 11 also includes a foot press frame 115 for providing a support point for the athlete through the athlete's feet during sit-ups, a first support member 114 for supporting the athlete's fibula position during sit-ups, and a telescopic joint 113; the telescopic joint 113 is arranged on an end of the first main rod body 111 away from the first mounting ear 1111, and the telescopic joint 113 can be telescoped along the length direction of the first main rod body 111; the foot press frame 115 and the first support member 114 are respectively arranged on the telescopic joint 113, and the first support member 114 is arranged at the telescopic end.

[0061] Specifically, the first main rod body 111 can be a hollow square rod, and the telescopic joint 113 can also be a square rod, which can be inserted into the hollow square rod and can be telescopic in the hollow square rod. When the telescopic joint 113 is telescopically connected to the first main rod body 111, a spring telescopic structure that is the same as the telescopic structure of an umbrella can be adopted. When it is necessary to adjust the extension length of the telescopic joint 113, the extension length of the telescopic joint 113 can be adjusted by pressing the first button 116. The specific structure of the spring structure can refer to the telescopic structure of the umbrella, and will not be elaborated here.

[0062] Of course, the telescopic joint 113 can also be telescopically connected to the first main rod body 111 in other ways, for example, in a threaded connection manner, that is, a through hole is provided on the first main rod body 111 (hollow square rod) that passes through the inner surface and the outer surface of the first main rod body 111, and a plurality of threaded holes are provided on the telescopic joint 113, which is connected to a threaded hole on the telescopic joint 113 after a thread passes through the through hole on the first main rod body 111. When it is necessary to adjust the extension length of the telescopic joint 113, the extension length of the telescopic joint 113 can be adjusted by adjusting the thread passing through the through hole on the first main rod body 111 and the threaded hole that is specifically connected to the telescopic joint 113.

[0063] In this embodiment, since the press-foot stand 115 and the first support member 114 are arranged on the telescopic joint 113, and the first sit-up board 12 is arranged on the first main rod body 111, it can be seen that the distance between the press-foot stand 115 and the first support member 114 and the first sit-up board 12 can be adjusted by adjusting the extended length of the telescopic joint 113 relative to the first main rod body 111, so that the sit-up board can be suitable for athletes of different heights and has wider adaptability.

[0064] The foot press stand 115 may include a first column 1151, a first cross column 1152 and a first mounting frame 1153, wherein the first mounting frame 1153 may be a mounting frame of a concave structure, the bottom of the mounting frame of the concave structure may be mounted on the telescopic joint 113 by threaded connection, through holes penetrating the two surfaces (outer surface and inner surface) of the side walls of the concave structure are respectively provided on the two side walls of the concave structure, a through hole radially passing through the central axis of the first column 1151 is provided on the first column 1151, and the first column 1151 is mounted on the first mounting frame 1153 by a bolt and a nut (the bolt passes through the through hole on the side wall of the concave structure and the through hole on the first column 1151). Further, the first cross column 1152 is mounted on the end of the first column 1151 away from the telescopic joint 113, and the first cross column 1152 after installation is in a T-shaped structure with the first column 1151, and sponge covers are wrapped at both ends of the first cross column 1152 to protect the athlete's foot.

[0065] The first support member 114 can be a columnar body, which is installed on the telescopic joint 113 at one end away from the first main rod body 111. After installation, the first support member 114 and the telescopic joint 113 form a T-shaped structure. In order to protect the position of the athlete's fibula, a layer of sponge pad can be wrapped on the outer periphery of the columnar body to protect the athlete's fibula. At the same time, the first support member 114 also supports the first main rod body 111. When the sit-up board is in use, the first support member 114 contacts the carrier on which the sit-up board is placed, and the first main rod body 111 is in a suspended state. For example, when the sit-up board is placed on the ground, the first support member 114 contacts the ground.

[0066] Furthermore, in order to reduce the weight of the sit-up board, the columnar body is a hollow columnar body, and the two ends of the hollow columnar body are respectively provided with a first plastic cover 1141 to prevent dust from falling in and to reduce vibration during sit-ups. When the sit-up board is placed on a carrier, the first plastic cover 1141 is also in contact with the carrier. For example, when the sit-up board is placed on the ground, the first plastic cover 1141 is also in contact with the ground.

[0067] In some embodiments, Figure 6 As shown, the second support frame 21 may include a second main rod body 211 ; the second lifting plate 22 is disposed on the second main rod body 211 , and a plurality of second reinforcing beams 212 for reinforcing and supporting the second lifting plate 22 are embedded on the second main rod body 211 .

[0068] Specifically, the second main rod body 211 can be but not limited to a square rod. When the second reinforcing beam 212 is set, the second reinforcing beam 212 can be embedded in the second main rod body 211 in a manner that is but not limited to being perpendicular to the second main rod body 211, wherein the upper surface of the second reinforcing beam 212 embedded in the second main rod body 211 is on the same horizontal plane as the upper surface of the second main rod body 211, that is, the second main rod body 211 and the second reinforcing beam 212 both support the first lifting plate 12.

[0069] In some embodiments, Figure 6 As shown, a second mounting ear 2111 is provided on the second main rod body 211, and the other end of the damping member 3 is rotatably connected to the second mounting ear 2111 via the rotating shaft 41; a second support member 213 is provided at one end of the second main rod body 211 away from the second mounting ear 2111.

[0070] In this embodiment, the second mounting ear 2111 is provided with a through hole penetrating through the two sides of the second mounting ear 2111, and the other end of the flexible damping member 3 is provided with a through hole corresponding to the through hole on the second mounting ear 2111, that is, the second mounting ear 2111 can be rotatably connected with the other end of the flexible damping member 3 through the through hole on the second mounting ear 2111 and the through hole at the other end of the flexible damping member 3. Among them, the second mounting ear 2111 can be provided with but not limited to two, and the two second mounting ears 2111 are respectively provided on both sides of the second main rod body 211, and extend out of the second main rod body 211 along the length direction of the second main rod body 211. Further, when the two second mounting ears 2111 are provided, the centers of the through holes on the two second mounting ears 2111 are on the same horizontal line, and the aperture of the through hole is slightly larger than the outer diameter of the rotating shaft 41 but smaller than the outer diameter of the compression stage 42. When the other end of the flexible damping member 3 is connected to the second main rod body 211, one end of the rotating shaft 41 with an external thread passes through the through hole at the other end of a flexible damping member 3, the through hole of a second mounting ear 2111, the through hole of another second mounting ear 2111 and the through hole at the other end of another flexible damping member 3 (installed in this order), and then another flexible damping member 3 is extended along the axial direction of the rotating shaft 41, and then, it is installed on the end of the rotating shaft 41 with an external thread through a nut, so that the other end of the flexible damping member 3 is rotatably connected to the second main rod body 211.

[0071] In this embodiment, since a flexible damping member 3 is provided on each second mounting ear 2111, each flexible damping member 3 can generate friction with the second mounting ear 2111 after being subjected to a radial compression force along the rotating shaft 41, thereby increasing the adjustment range of the friction force.

[0072] In this embodiment, the second support member 213 can be a hollow columnar body, which is installed at one end of the second main rod body 211 away from the first main rod body 111. The second support member 213 is connected to the second main rod body 211 to form a T-shaped structure. When the sit-up board is in use, the second support member 213 contacts the carrier on which the sit-up board is placed, and the second main rod body 211 is in a suspended state. For example, when the sit-up board is placed on the ground, the second support member 213 contacts the ground. In order to prevent dust from falling in and to reduce vibration, the two ends of the hollow columnar body are respectively covered with second plastic covers 2131. When the sit-up board is placed on the carrier, the second plastic cover 2131 also contacts the carrier. For example, when the sit-up board is placed on the ground, the second plastic cover 2131 also contacts the ground.

[0073] In some embodiments, Figure 8 As shown, the damping member 3 is a damping plate 31 , wherein the damping plate 31 may be a waist-shaped structure, and through holes penetrating the two side surfaces of the damping plate 31 are respectively provided at both ends of the damping plate 31 .

[0074] In this embodiment, in order to make the adjustment range of the friction force larger, when setting the damping sheet 31, multiple damping sheets 31 can be set in a superimposed manner. For example, a plurality of damping sheets 31 can be superimposed on a first mounting ear 1111, and then, after passing through the through hole on the damping sheet 31 through one end of the rotating shaft 41 provided with external threads, passing through the through hole of a first mounting ear 1111, continuing to pass through the through hole of another first mounting ear 1111, and then passing through another plurality of superimposed damping sheets 31, and then being installed on the end of the rotating shaft provided with external threads through a nut and a nut, so that the damping sheet 31 is rotatably connected to the first main rod body 111; wherein, when the damping sheet 31 is connected to the second main rod body 211, the same connection method as described above is adopted, which will not be repeated here.

[0075] In summary, the sit-up board provided by the utility model has the following beneficial effects:

[0076] Since one end of the first support part 1 is rotatably connected to one end of the flexible damping member 3, and one end of the second support part 2 is rotatably connected to the other end of the flexible damping member 3, when the sit-up board is used, the first support part 1 and the second support part can be rotated so that the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board are in the same horizontal plane. After the sit-up board is used, the first support part 1 and the second support part 2 can be rotated so that the upper surface 121 of the first sit-up board and the upper surface 221 of the second sit-up board are opposite to each other, or the lower surface of the first sit-up board and the lower surface of the second sit-up board are opposite to each other, so that they are in a folded state, so that the sit-up board can be stored in a folded state after use, which reduces the space occupied, is convenient to carry, and is convenient to transport after folding.

[0077] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.

Claims

1. A sit-up board, characterized in that: include: A first support part for supporting the athlete's body during sit-ups, wherein the first support part at least comprises a first sit-up board; A second support part for supporting the athlete's body during sit-ups, the second support part comprising at least a second sit-up board; a flexible damping member, one end of which is rotatably connected to one end of the first supporting portion, and the other end of which is rotatably connected to one end of the second supporting portion; Among them, the sit-up board includes a folding state and a use state. In the folding state, the upper surface of the first sit-up board is opposite to the upper surface of the second sit-up board, or the lower surface of the first sit-up board is opposite to the lower surface of the second sit-up board; in the use state, the upper surface of the first sit-up board and the upper surface of the second sit-up board are on the same horizontal plane.

2. The sit-up board according to claim 1, characterized in that: The first support part further includes: a first support frame, and the first lifting plate is arranged on the first support frame; The second supporting part also includes a second supporting frame, and the second lifting plate is arranged on the second supporting frame.

3. The sit-up board according to claim 2, characterized in that: One end of the flexible damping member is rotatably connected to the first support frame via a connecting member, and the other end of the flexible damping member is rotatably connected to the second support frame via another connecting member.

4. The sit-up board according to claim 3, characterized in that: The connecting member comprises: a rotating shaft with an external thread at the end, one end of the flexible damping member is rotatably connected to the first support frame via a rotating shaft, and the other end of the flexible damping member is rotatably connected to the second support frame via another rotating shaft; Wherein, a compression platform for compressing the flexible damping element is arranged at one end of the rotating shaft away from the external thread.

5. The sit-up board according to claim 4, characterized in that: The first support frame comprises: a first main rod body; The first lifting plate is arranged on the first main rod body, and a plurality of first reinforcing beams for reinforcing and supporting the first lifting plate are embedded on the first main rod body.

6. The sit-up board according to claim 5, characterized in that: The first main rod body is provided with a first mounting ear, and one end of the flexible damping member is rotatably connected to the first mounting ear via the rotating shaft.

7. The sit-up board according to claim 5, characterized in that: The first support frame further comprises: a foot press frame for providing a support point for the athlete through the athlete's foot surface during sit-ups, a first support member and a telescopic joint for supporting the athlete's fibula and the first main rod body during sit-ups; The telescopic joint is arranged on an end of the first main rod body away from the first mounting ear, and the telescopic joint can be telescoped along the length direction of the first main rod body; The presser foot stand and the support member are respectively arranged on the telescopic joint, and the support member is arranged at the telescopic end.

8. The sit-up board according to claim 4, characterized in that: The second support frame comprises: a second main rod body; The second lifting plate is arranged on the second main rod body, and a plurality of second reinforcing beams for reinforcing and supporting the second lifting plate are embedded on the second main rod body.

9. The sit-up board according to claim 8, characterized in that: The second main rod body is provided with a second mounting ear, and the other end of the flexible damping member is rotatably connected to the second mounting ear via the rotating shaft; A second supporting member for supporting the second main rod is disposed at one end of the second main rod away from the second mounting ear.

10. The sit-up board according to claim 9, characterized in that: The flexible damping member is a damping sheet.

Images