Square linking lock and web strengthening plate

By using the connecting component of a square link lock on the web, the poor motion coordination problem caused by the independent sliding of the support block is solved, and the stable connection and synchronous sliding of the support block are achieved, which improves the exercise effect and operation convenience.

CN223082191UActive Publication Date: 2025-07-11SUZHOU FANHUA ELECTRONICS TECH CO LTD
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Patent Information

Application Number
CN202422016102.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-20
Publication Date
2025-07-11
Estimated Expiration
2034-08-20

AI Technical Summary

Technical Problem

The support blocks of existing webs slide independently when sliding, resulting in poor coordination of movement during high-intensity or fast movements, affecting the exercise effect, and may lead to uneven force on the abdominal muscles.

Method used

The square link lock is adopted to achieve stable connection and synchronous sliding of the support block by connecting the lock and positioning the connecting components on the lock, including sliding grooves, connecting blocks, teeth, clamps, limiting parts and elastic support components.

Benefits of technology

It improves the coordination of the movements, avoids uneven abdominal muscles caused by uneven sliding of the support block, improves the exercise effect, and simplifies the operation process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a square chaining lock and a web plate. The square chaining lock comprises a connecting lock, a positioning lock and a connecting assembly arranged on the connecting lock and the positioning lock, the connecting assembly comprises a sliding groove formed in one side of the connecting lock and a connecting groove formed in one side of the positioning lock. A plurality of clamping teeth are fixed to the two sides of the connecting block, and a plurality of clamping blocks are hinged to the inner side of the connecting groove. Through cooperation of a sliding groove, a connecting block, a limiting piece, a connecting groove, a plurality of clamping teeth and a plurality of clamping blocks, the connecting block can be effectively clamped to the inner side of the connecting groove, then a plurality of elbow supporting blocks can be effectively connected through a square linkage lock, operation is easy and convenient, and the elbow supporting blocks can be effectively connected when high-strength or rapid action is conducted. The strength and the speed of the two arms do not need to be additionally controlled, the action coordination is improved, the situation that one elbow supporting block slides too fast or too slow, and consequently abdominal muscles are stressed unevenly is avoided, and therefore the exercise effect can be improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a square link lock and a fitness abdominal board. Background Art

[0002] The fitness abdominal board, also known as the abdominal muscle board, is a fitness equipment designed for abdominal training. This fitness equipment can exercise the waist and abdomen, reduce the belly fat, exercise the muscles and ankles, and also play a role in improving the cardiopulmonary function and increasing blood circulation. At the same time, it also has a certain effect on relieving the back fascia strain of those with lumbar muscle strain. Because of its convenient use and remarkable use effect, it is loved by the majority of fitness enthusiasts.

[0003] For the sliding fitness abdominal board, one usually kneels on the plane fixed point with both knees, supports on the support blocks on the fitness abdominal board with both arms, and holds the grips on the support blocks with both hands to slide, so as to achieve the purpose of exercising the waist and abdomen. In the prior art, the number of support blocks on the fitness abdominal board is often two, and there is no connection between them, so that the two support blocks slide independently when sliding on the top of the fitness abdominal board. When performing high-intensity or fast movements, it is necessary to additionally control the strength and speed of both arms, which reduces the coordination of the movements. And when one of the support blocks slides too fast or too slow, it is easy to cause uneven stress on the abdominal muscles, thus affecting the exercise effect. Summary of the Invention

[0004] The utility model overcomes the deficiencies of the prior art and provides a square link lock and a fitness abdominal board.

[0005] To achieve the above object, the technical solution adopted by the utility model is: a square link lock, comprising: a connection lock, a positioning lock, and a connection component provided on the connection lock and the positioning lock;

[0006] The connection component includes: a sliding groove opened on one side of the connection lock, a connection groove opened on one side of the positioning lock, and a connection block provided inside the sliding groove; connecting pieces are fixed on both sides of the connection block, and a plurality of clamping blocks are hinged inside the connection groove;

[0007] The connecting piece is used for clamping and cooperating with the plurality of clamping blocks, an elastic support component for elastically supporting the clamping block is arranged on one side of the clamping block, and a limiting piece for limiting sliding when the connection block slides is arranged inside the sliding groove.

[0008] In a preferred embodiment of the utility model, the connecting piece includes: a plurality of teeth fixed on both sides of the connection block; the sides of the teeth and one end of the clamping block are both inclined, and the inclined directions are the same; the right-angle sides of the sides of the teeth are lapped with the right-angle sides of one end of the clamping block.

[0009] In a preferred embodiment of the utility model, a push groove is provided on the top of the connecting lock, a push block is fixed on the top of the connecting block, the top of the push block is located at the top of the connecting lock, and the side surface of the push block is slidably connected to the inner side of the push groove.

[0010] In a preferred embodiment of the utility model, the elastic support assembly includes: a fixed block fixed on the inner side of the connecting groove, a connecting rod arranged between the fixed block and the clamping block, and a reset spring fixed on the inner side of the fixed block; a hinge groove is provided on the inner side of the clamping block, a shifting groove is provided on the top of the positioning lock, a shifting block is fixed on the side of the connecting rod, a resistance block is overlapped on the side of the clamping block facing the outside of the connecting groove, and the side of the resistance block is fixed to the inner side of the connecting groove.

[0011] In a preferred embodiment of the utility model, one end of the connecting rod is located on the inner side of the fixed block and is fixed to one end of the return spring, and the other end of the connecting rod is hinged to the inner side of the hinge groove; the top of the shift block is located on the top of the positioning lock, and the side surface is slidably connected to the inner side of the shift groove.

[0012] In a preferred embodiment of the utility model, the limiting member includes: a plurality of limiting grooves opened on the inner side of the sliding groove, and a plurality of limiting blocks fixed on both sides of the connecting block; one end of the limiting block is located on the inner side of the limiting groove, and the side surface of the limiting block is slidably connected to the inner side of the limiting groove.

[0013] The utility model provides an abdominal strengthening plate, comprising a square linking lock as described in any one of the above items.

[0014] In a preferred embodiment of the utility model, the abdominal strengthening board comprises: a plurality of abdominal strengthening board bodies, a plurality of slide grooves provided on the tops of the plurality of abdominal strengthening board bodies, and a plurality of elbow supporting blocks arranged on the tops of the plurality of abdominal strengthening board bodies; a folding groove is provided on the top of the elbow supporting block, a handle is rotatably connected to the inner side of the folding groove, one side of the connecting lock and the positioning lock are fixed to one side of the plurality of elbow supporting blocks, and a plurality of conical blocks are fixed to one side of the elbow supporting block.

[0015] In a preferred embodiment of the utility model, one side of the adjacent abdominal strengthening plate body is hinged, the bottoms of several elbow support blocks are slidably connected to the inner sides of several slide grooves, and one side of several conical blocks are respectively fixed to the side surfaces of the connecting lock and the positioning lock.

[0016] In a preferred embodiment of the utility model, a plurality of grooves are formed on the tops of the plurality of belly-strengthening plate bodies.

[0017] The utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0018] (1) The utility model provides a square link lock and an abdominal fitness plate. A connecting assembly is arranged on the connecting lock and the positioning lock. After one side of the connecting lock and the positioning lock is respectively fixed to one side of a plurality of elbow support blocks, the sliding groove, the connecting block, the limiting member, the connecting groove, the plurality of latch teeth and the plurality of latch blocks cooperate with each other. Since the side surface of the latch teeth and one end of the latch block are inclined and the inclination direction is consistent, and the right-angled side of the side surface of the latch teeth overlaps with the right-angled side of one end of the latch block, the connecting block can be effectively clamped to the inner side of the connecting groove. With the cooperation of the elastic support assembly, the overlapping posture of the latch block and the latch teeth can be elastically supported, and then the square link lock can be used to effectively connect the plurality of elbow support blocks. The operation is simple and convenient. When performing high-intensity or fast movements, there is no need to additionally control the strength and speed of the two arms, thereby improving the coordination of the movements and avoiding uneven force on the abdominal muscles caused by one of the elbow support blocks sliding too fast or too slow, thereby helping to improve the effect of exercise.

[0019] (2) In the utility model, by arranging a limit piece on the inner side of the sliding groove, when the connecting block is pushed to slide on the inner side of the sliding groove and move toward the inner side of the connecting groove, through the cooperation of a plurality of limit grooves and a plurality of limit blocks, a plurality of limit blocks on the side of the connecting block can move synchronously with the connecting block. At the same time, since the side surfaces of the plurality of limit blocks are slidably connected to the inner side of the limit groove, the sliding path of the connecting block can be limited, which helps to improve its stability and the reliability of the connection process.

[0020] (3) In the utility model, an elastic support component is provided on one side of the card block. When the connecting block drives the plurality of latch teeth on both sides to slide into the connecting groove and the inclined surface of the latch teeth contacts the inclined surface of the card block, the connecting rod, the hinge groove, the fixed block, the return spring and the resistance block can cooperate to make the card block flip toward the inner side of the connecting groove during the process of the latch teeth squeezing the card block, so that the card block can smoothly enter the right-angle side of the latch teeth and elastically support the overlapping posture of the card block and the latch teeth to maintain the stability of the connection. When the connecting block needs to slide out of the connecting groove, the connecting block drives the latch teeth at the end to fully penetrate into the inner side of the connecting groove. With the cooperation of the shifting block and the shifting groove, the card block can be pulled to flip toward the inner side of the connecting groove, so that the connecting block and the plurality of latch teeth can smoothly slide out from the inner side of the connecting groove, thereby canceling the connection state. The operation is simple and convenient, which helps to improve the practicality during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0022] Figure 1 It is a three-dimensional structural diagram of a preferred embodiment of the utility model;

[0023] Figure 2 It is a half-section structure of the connecting lock and the positioning lock of the preferred embodiment of the utility model and a partial enlarged view thereof;

[0024] Figure 3 It is a structural diagram of the connection between the connection lock, the positioning lock and the elbow support block of the preferred embodiment of the utility model;

[0025] In the figure: 1. connecting lock; 2. positioning lock; 3. sliding groove; 31. connecting groove; 32. connecting block; 33. latching tooth; 34. latching block; 4. pushing groove; 41. pushing block; 5. fixing block; 51. connecting rod; 52. reset spring; 53. hinge groove; 54. shifting groove; 55. shifting block; 56. resistance block; 6. limiting groove; 61. limiting block; 7. abdominal plate body; 71. sliding groove; 72. elbow support block; 73. folding groove; 74. grip; 75. conical block; 8. pulling groove. DETAILED DESCRIPTION

[0026] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0027] like Figure 1 and Figure 2 As shown, a square link lock comprises: a connecting lock 1 and a positioning lock 2, and a connecting component arranged on the connecting lock 1 and the positioning lock 2; the connecting component comprises: a sliding groove 3 provided on one side of the connecting lock 1, a connecting groove 31 provided on one side of the positioning lock 2, and a connecting block 32 arranged on the inner side of the sliding groove 3; connecting pieces are fixed on both sides of the connecting block 32, and a plurality of clamping blocks 34 are hinged on the inner side of the connecting groove 31; the connecting piece is used to be engaged with the plurality of clamping blocks 34, and an elastic supporting component for elastically supporting the clamping block 34 is provided on one side of the clamping block 34, and a limiting piece for sliding limit when the connecting block 32 slides is provided on the inner side of the sliding groove 3; the connecting piece comprises: a plurality of clamping teeth 33 fixed on both sides of the connecting block 32; the side surface of the clamping tooth 33 and one end of the clamping block 34 are both inclined, and the inclination direction is consistent; the right angle side of the side surface of the clamping tooth 33 overlaps the right angle side of one end of the clamping block 34.

[0028] When the locking cam 33 is in the locked state, the locking cam 33 is in the locked state, and the locking cam 33 is in the locked state.

[0029] In some embodiments, a push groove 4 is opened at the top of the connecting lock 1, a push block 41 is fixed to the top of the connecting block 32, the top of the push block 41 is located at the top of the connecting lock 1, and the side of the push block 41 is slidably connected to the inner side of the push groove 4.

[0030] It should be noted that the diameter of the push block 41 is the same as the width of the push slot 4; when it is necessary to drive the connecting block 32 to move, the push block 41 is manually driven to slide on the inner side of the push slot 4. Since the bottom end of the push block 41 is fixed to the top of the connecting block 32, the connecting block 32 can be driven to slide on the inner side of the sliding slot 3, providing power for the movement of the connecting block 32.

[0031] In some embodiments, the elastic support assembly includes: a fixed block 5 fixed on the inner side of the connecting groove 31, a connecting rod 51 arranged between the fixed block 5 and the clamping block 34, and a return spring 52 fixed on the inner side of the fixed block 5; a hinge groove 53 is opened on the inner side of the clamping block 34, a shifting groove 54 is opened on the top of the positioning lock 2, a shifting block 55 is fixed on the side of the connecting rod 51, and a resistance block 56 is overlapped on the side of the clamping block 34 facing the outside of the connecting groove 31, and the side of the resistance block 56 is fixed to the inner side of the connecting groove 31.

[0032] It should be noted that one end of the connecting rod 51 is located on the inner side of the fixed block 5 and is fixed to one end of the return spring 52, and the other end of the connecting rod 51 is hinged to the inner side of the hinge groove 53; the top of the shifting block 55 is located on the top of the positioning lock 2, and the side surface is slidably connected to the inner side of the shifting groove 54; when the connecting block 32 drives the plurality of latch teeth 33 on both sides to slide into the connecting groove 31, so that the inclined surface of the latch teeth 33 contacts the inclined surface of the latch block 34, when the latch block 34 continues to move, it can squeeze the latch block 34, so that the latch block 34 is flipped through the hinge point with the connecting groove 31. When flipping, the connecting rod 51 hinged to the hinge groove 53 on the inner side of the latch block 34 will move synchronously to the inner side of the connecting groove 31, so that one end of the connecting rod 51 squeezes the return spring 52 on the inner side of the fixed block 5, and when the latch block 34 moves along the hinge point After the right-angled side of the latch tooth 33 is entered, the return spring 52 will reset and push the connecting rod 51, and drive the latch block 34 to reset to the side of the abutment block 56, completing the elastic support for the overlapping posture of the latch block 34 and the latch tooth 33, and maintaining the stability of the connection. When the connecting block 32 needs to slide out of the connecting groove 31, the connecting block 32 drives the latch tooth 33 at the end to fully penetrate the inner side of the connecting groove 31, and manually moves the dial block 55 on the inner side of the dial groove 54, which can drive the connecting rod 51 at the bottom of the dial block 55 to move toward one side of the fixed block 5, so that it pulls the latch block 34 to flip toward the inner side of the connecting groove 31, and then the connecting block 32 and a plurality of latch teeth 33 can be smoothly slid out from the inner side of the connecting groove 31, thereby canceling the connection state. The operation is simple and convenient, which helps to improve the practicality during use.

[0033] In some embodiments, the limiting member includes: a plurality of limiting grooves 6 opened on the inner side of the sliding groove 3, and a plurality of limiting blocks 61 fixed on both sides of the connecting block 32; one end of the limiting block 61 is located on the inner side of the limiting groove 6, and the side surface of the limiting block 61 is slidably connected to the inner side of the limiting groove 6.

[0034] It should be noted that when the connecting block 32 is pushed to slide on the inner side of the sliding groove 3 and move toward the inner side of the connecting groove 31, several limit blocks 61 on the side of the connecting block 32 can follow the connecting block 32 to move synchronously. At the same time, since the side surfaces of several limit blocks 61 are slidingly connected to the inner side of the limit groove 6, the sliding path of the connecting block 32 can be limited, which helps to improve its stability and the reliability of the connection process.

[0035] The utility model provides an abdominal strengthening plate, comprising a square linking lock as described in any one of the above items.

[0036] like Figure 3As shown, in some embodiments, the abdominal exercise board includes: a plurality of abdominal exercise board bodies 7, a plurality of sliding grooves 71 opened at the tops of the plurality of abdominal exercise board bodies 7, and a plurality of elbow support blocks 72 provided at the tops of the abdominal exercise board bodies 7; a folding groove 73 is opened at the top of the elbow support block 72, and a grip 74 is rotatably connected to the inner side of the folding groove 73. One side of the connection lock 1 and the positioning lock 2 is fixed to one side of the plurality of elbow support blocks 72, and a plurality of conical blocks 75 are fixed to one side of the elbow support block 72.

[0037] It should be noted that one side of adjacent abdominal exercise board bodies 7 is hinged, the bottoms of the plurality of elbow support blocks 72 are slidably connected to the inner sides of the plurality of sliding grooves 71, and one side of the plurality of conical blocks 75 is respectively fixed to the sides of the connection lock 1 and the positioning lock 2; after fixing one side of the connection lock 1 and the positioning lock 2 to one side of the plurality of elbow support blocks 72 respectively, the plurality of elbow support blocks 72 can be effectively connected through a square link lock. The operation is simple and convenient. When performing high-intensity or rapid movements, there is no need to additionally control the strength and speed of both arms, which improves the coordination of movements and avoids uneven force on the abdominal muscles caused by one of the elbow support blocks 72 sliding too fast or too slow, thus helping to improve the exercise effect. And since the grip 74 is rotatably connected to the inner side of the folding groove 73 at the top of the elbow support block 72, when the abdominal exercise board is not in use, the grip 74 can be folded and stored inside the folding groove 73. At the same time, since adjacent abdominal exercise board bodies 7 are hinged, the plurality of abdominal exercise board bodies 7 can be turned and folded, thereby greatly reducing the overall volume, significantly reducing the space occupied during storage, and improving portability, thus enhancing its flexibility and practicality.

[0038] In some embodiments, a plurality of pulling grooves 8 are opened at the tops of the plurality of abdominal exercise board bodies 7; through the setting of the pulling grooves 8, it is convenient for users to drive the abdominal exercise board bodies 7 to move by pulling the pulling grooves 8.

[0039] When the utility model is used, after one side of the connecting lock 1 and the positioning lock 2 are respectively fixed to one side of the plurality of elbow support blocks 72, the pushing block 41 is manually driven to slide on the inner side of the pushing groove 4. Since the bottom end of the pushing block 41 is fixed to the top of the connecting block 32, the connecting block 32 can be driven to slide on the inner side of the sliding groove 3 and penetrate into the inner side of the connecting groove 31. When the connecting block 32 is pushed to slide on the inner side of the sliding groove 3 and move toward the inner side of the connecting groove 31, the plurality of limiting blocks 61 on the side of the connecting block 32 can follow the connecting block 32 to move synchronously. At the same time, since the side surfaces of the plurality of limiting blocks 61 are slidably connected to the inner side of the limiting groove 6, the sliding path of the connecting block 32 can be limited. When the connecting block 32 drives the plurality of latch teeth 33 on both sides to slide into the connecting groove 31, the inclined surface of the latch teeth 33 contacts the inclined surface of the latch block 34. When the latch block 34 continues to move, it can squeeze the latch block 34, so that the latch block 34 passes through the latch block 34 When the hinge point of the connecting groove 31 is flipped, the connecting rod 51 hingedly connected to the hinge groove 53 on the inner side of the block 34 will move synchronously toward the inner side of the connecting groove 31, so that one end of the connecting rod 51 squeezes the return spring 52 on the inner side of the fixing block 5. After the block 34 smoothly enters the right-angled side of the latch tooth 33, the return spring 52 will reset and push the connecting rod 51, and drive the block 34 to reset to the side of the resistance block 56, completing the elastic support for the overlapping posture of the block 34 and the latch tooth 33, so that the connecting block 32 can penetrate into the inner side of the connecting groove 31 to complete the connection between the connecting lock 1 and the positioning lock 2. Then, when the user performs high-intensity or fast movements through the elbow support block 72 on the abdominal fitness board body 7, there is no need to additionally control the strength and speed of the two arms, thereby improving the coordination of the movements and avoiding one of the elbow support blocks 72 sliding too fast or too slow, resulting in uneven force on the abdominal muscles, thereby helping to improve the effect of exercise.

[0040] The above is based on the ideal embodiment of the utility model as inspiration. Through the above description, it is obvious to those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0041] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A square link lock, characterized in that, include: A connecting lock (1) and a positioning lock (2), and a connecting component arranged on the connecting lock (1) and the positioning lock (2); The connection assembly comprises: a sliding groove (3) provided on one side of the connection lock (1), a connection groove (31) provided on one side of the positioning lock (2), and a connection block (32) arranged inside the sliding groove (3); connecting pieces are fixed on both sides of the connection block (32), and a plurality of clamping blocks (34) are hingedly connected inside the connection groove (31); The connecting piece is used for engaging with a plurality of the clamping blocks (34), one side of the clamping block (34) is provided with an elastic support component for elastically supporting the clamping block (34), and the inner side of the sliding groove (3) is provided with a limiting piece for sliding limit when the connecting block (32) slides.

2. The square link lock according to claim 1, characterized in that: The connecting member comprises: a plurality of latch teeth (33) fixed on both sides of the connecting block (32); the side surfaces of the latch teeth (33) and one end of the latch block (34) are both inclined, and the inclination directions are consistent; and the right-angled sides of the side surfaces of the latch teeth (33) overlap the right-angled sides of one end of the latch block (34).

3. A square link lock according to claim 1, characterized in that: A pushing groove (4) is provided on the top of the connecting lock (1), a pushing block (41) is fixed on the top of the connecting block (32), the top end of the pushing block (41) is located on the top of the connecting lock (1), and the side surface of the pushing block (41) is slidably connected to the inner side of the pushing groove (4).

4. A square link lock according to claim 1, characterized in that: The elastic support assembly comprises: a fixed block (5) fixed on the inner side of the connecting groove (31), a connecting rod (51) arranged between the fixed block (5) and the clamping block (34), and a return spring (52) fixed on the inner side of the fixed block (5); a hinge groove (53) is provided on the inner side of the clamping block (34), a shifting groove (54) is provided on the top of the positioning lock (2), a shifting block (55) is fixed on the side of the connecting rod (51), and a resistance block (56) is overlapped on the side of the clamping block (34) facing the outside of the connecting groove (31), and the side of the resistance block (56) is fixed to the inner side of the connecting groove (31).

5. A square link lock according to claim 4, characterized in that: One end of the connecting rod (51) is located on the inner side of the fixed block (5) and is fixed to one end of the return spring (52), and the other end of the connecting rod (51) is hinged to the inner side of the hinge groove (53); the top of the shifting block (55) is located on the top of the positioning lock (2), and the side surface is slidably connected to the inner side of the shifting groove (54).

6. The square link lock according to claim 1, characterized in that: The limiting member comprises: a plurality of limiting grooves (6) provided on the inner side of the sliding groove (3), and a plurality of limiting blocks (61) fixed on both sides of the connecting block (32); one end of the limiting block (61) is located on the inner side of the limiting groove (6), and the side surface of the limiting block (61) is slidably connected to the inner side of the limiting groove (6).

7. A abdominal muscle exerciser, characterized in that: Comprising a square interlocking lock as described in any one of claims 1-6.

8. A health abdominal board according to claim 7, characterized in that: The abdominal exercise board includes: a plurality of abdominal exercise board bodies (7), a plurality of sliding grooves (71) opened at the tops of the plurality of abdominal exercise board bodies (7), and a plurality of elbow support blocks (72) arranged at the tops of the abdominal exercise board bodies (7); a folding groove (73) is opened at the top of the elbow support block (72), and a grip (74) is rotatably connected to the inner side of the folding groove (73). One side of the connection lock (1) and the positioning lock (2) is fixed to one side of the plurality of elbow support blocks (72), and a plurality of conical blocks (75) are fixed to one side of the elbow support block (72).

9. A abdominal muscle trainer according to claim 8, wherein: One side of adjacent abdominal exercise board bodies (7) is hinged, the bottoms of the plurality of elbow support blocks (72) are slidably connected to the inner sides of the plurality of sliding grooves (71), and one sides of the plurality of conical blocks (75) are respectively fixed to the sides of the connection lock (1) and the positioning lock (2).

10. A kind of abdominal exercise board according to claim 8, characterized in that: A plurality of pulling grooves (8) are opened at the tops of the plurality of abdominal exercise board bodies (7).