A conveniently storable flush mounted rowing machine

Abstract

The application belongs to the technical field of fitness equipment, and provides an embedded rowing machine convenient to store, which comprises a shell, a magnetoresistance device main body is fixedly installed in the shell, a guide plate is rotatably installed in the shell, and a second fixing pin for fixing the guide plate is arranged on the shell, a supporting plate is rotatably installed at one end of the guide plate away from the rotating shaft, and a foot support assembly is arranged at one end of the guide plate close to the rotating shaft. The technical problem that users are difficult to keep correct stable body posture movement in the prior art, resulting in body movement injury, is solved. Compared with the prior art, the beneficial effects of the application are as follows: the lower back of the user can be supported, the stability of the user's body is improved, the probability of the user bending the body to gain power or the upper body rotating to gain power is reduced, the user is ensured to be in correct posture movement, the user's waist and lower back are prevented from continuously exerting force to keep the body stable, and the probability of injury of the waist and lower back during the movement process is reduced.

Description

Technical Field

[0001] This invention belongs to the field of fitness equipment technology, and in particular relates to an embedded rowing machine that is easy to store. Background Technology

[0002] Rowing machines provide good exercise for the legs, upper limbs, chest, and back. During rowing, the user's feet must be fixed and the body must be kept stable to avoid deformed movements. The rowing process includes the user's legs using force to make the torso overcome resistance and move away from the feet, the back using force to drive the arms to rotate and continue to overcome resistance, and the legs bending to pull the torso closer to the feet.

[0003] In existing rowing machines, the user uses their legs to push their torso away from the feet, pulling the bar with their arms. The resistance is transmitted to the user's body through the bar and arms. During this process, the user's arms are raised due to the resistance. Since only the hips and feet are fixed, the user's upper body needs to rely on their lower back and waist for stability. Because the resistance acts on the user's body from the shoulders, the point of application is a considerable distance from the waist, generating a significant torque. This necessitates strong muscles in the user's lower back and waist. Only by maintaining stability can the user achieve this. When the user lacks sufficient strength to keep their upper body stable, their upper body will bend and use the hips as a fulcrum to rotate during the exercise, causing the user's body to deform during the exercise. This can lead to sports injuries in the user's waist, lower back, or other areas where they are using the support, reducing the safety of using the rowing machine. At the same time, during the movement of the torso overcoming resistance and moving away from the feet, the arms are always in a state of tension. If the user's shoulders cannot remain taut at all times, the forward pulling force can cause the humerus to shift forward, affecting the user's postural health. Summary of the Invention

[0004] The purpose of this invention is to provide an easily stored embedded rowing device, which aims to solve the technical problem in the prior art where users have difficulty maintaining a correct and stable body posture, leading to sports injuries.

[0005] The present invention is implemented as follows: an embedded rowing device that is easy to store includes a housing, a magnetic reluctance device body is fixedly installed inside the housing, a guide plate is rotatably installed inside the housing and a second fixing pin is provided on the housing for fixing the guide plate, a support plate is rotatably installed at the end of the guide plate away from its rotation axis, and a foot support assembly is provided at the end of the guide plate close to its rotation axis.

[0006] A sliding plate is mounted on the guide plate via pulleys. A cushion is provided on the sliding plate. A cavity with one end open is provided on the sliding plate. A back plate is provided inside the cavity. A support component for supporting the back plate is provided on the sliding plate. A limit plate is slidably mounted on the sliding plate. The limit plate cooperates with a stop fixedly installed at the end of the sliding plate. A pull wire passing through the stop and connected to the main body of the magnetoresistive device is connected to the limit plate. A push-pull component is provided on the limit plate for the user to drive the limit plate to move.

[0007] A further technical solution: A guide frame is fixedly installed on the sliding plate, a limiting plate is slidably connected to the guide frame and the guide frame is fixedly connected to the stop block, an mounting plate is slidably installed on the guide frame, the seat cushion is rotatably installed on the mounting plate, and a first fixing pin that works with the guide frame is slidably installed on the mounting plate.

[0008] A further technical solution: Two sets of sliders are rotatably mounted on one end of the back plate. The two sets of sliders are distributed on both sides of the back plate and slidably mounted in the cavity. A limiting block for restricting the position of the sliders is fixedly installed at the opening position of the cavity.

[0009] A further technical solution: A rotating shaft for supporting the back plate is rotatably installed at the opening end of the cavity.

[0010] Further technical solution: The foot support assembly includes a rotating block, two sets of which are rotatably mounted on the guide plate, and a pedal is rotatably mounted on the side of the rotating block, with a strap on the pedal.

[0011] Further technical solution: The support assembly includes support rods, two sets of support rods are provided and rotatably mounted on a sliding plate, the sliding plate has a mounting groove for storing the support rods, the support rods are located at the open end of the cavity on the sliding plate and the two sets of support rods are distributed on both sides of the back plate, and the movable end of the support rod is connected to the back plate.

[0012] Further technical solution: The support assembly also includes connecting rods, two sets of which are slidably mounted on both sides of the back plate. The connecting rods pass through the support rods and the ends of the support rods are threaded with fixing screws.

[0013] Further technical solution: The push-pull assembly includes an extension plate, which is provided in two sets and distributed at both ends of the limiting plate. The extension plate is slidably installed in the limiting plate. A groove is opened on the surface of the extension plate away from the sliding plate, and a first vertical rod is rotatably installed in the groove. A second vertical rod is threadedly connected to the first vertical rod and arranged coaxially.

[0014] A further technical solution: The end of the extension plate away from the limiting plate is threaded with a positioning screw that passes through the first vertical rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. As the sliding plate moves away from the shell, the user exerts force with their legs, buttocks, and lower back, directly pushing the sliding plate through the back panel. The leg exertion ensures that the user's lower back is in close contact with the back panel. When the user's lower back is in close contact with the back panel, it provides support for the user's lower back, thereby improving the user's body stability and reducing the probability of the user bending over or rotating their upper body to use force, ensuring that the user is in the correct posture during exercise.

[0017] 2. The sliding plate moves directly by pulling the cable. As the sliding plate moves away from the shell, the cable is not pulled by the arm. Therefore, the resistance will not exert a forward pulling force on the user's lower back and waist through the arm. This further reduces the force exerted on the user and lower back during exercise, and avoids the user's waist and lower back from continuously exerting force to maintain body stability, thus reducing the probability of waist and lower back injury during exercise.

[0018] 3. When performing upper back exercises, the user actively uses their back to move the limiting plate through their arms. Only then will the user's shoulders be under stress. The user can remind themselves to actively exert force during the exercise, reducing the probability of shoulder relaxation. At the same time, as the body moves away from the feet, the resistance generated by the magnetic resistance device will not be actively applied to the user's arms for stretching. This avoids the resistance actively pulling on the user's shoulders through the arms, eliminating the need for the user to continuously exert force in the shoulders to maintain stability. It also prevents the humerus from shifting forward due to the user's relaxed shoulders being stretched, further reducing the probability of sports injuries during exercise and ensuring the user's physical health.

[0019] 4. After being stored, all components can be embedded in the housing. The guide plate covers the openings on the sides of the housing, greatly reducing the space occupied by the device after folding and storing. The stored device is located inside the housing, achieving regular storage without affecting the surrounding area, thus improving storage efficiency. The housing can then be used to place items normally, realizing integrated home use and exercise, and improving the practicality of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the sliding plate in this invention.

[0022] Figure 3 This is a schematic diagram of the push-pull assembly in this invention.

[0023] Figure 4 This is a cross-sectional view of the sliding plate in this invention.

[0024] Figure 5 for Figure 1A magnified view of region A1 in the middle.

[0025] Figure 6 for Figure 2 A magnified view of region A2 in the middle.

[0026] Figure 7 for Figure 2 A magnified view of region A3 in the middle.

[0027] In the attached diagram: 1. Housing; 2. Main body of the magnetoresistive device; 3. Guide plate; 4. Support plate; 5. Rotating block; 6. Pedal; 7. Strap; 8. Sliding plate; 9. Cavity; 10. Back plate; 11. Slider; 12. Limiting block; 13. Mounting groove; 14. Support rod; 15. Connecting rod; 16. Guide frame; 17. Mounting plate; 18. Cushion; 19. First fixing pin; 20. Stop block; 21. Limiting plate; 22. Pull cable; 23. Extension plate; 24. First vertical rod; 25. Second vertical rod; 26. Positioning screw; 27. Rotating shaft; 28. Second fixing pin; 29. ​​Foot support assembly; 30. Support assembly; 31. Push-pull assembly. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0030] like Figures 1-7 As shown, the present invention provides an embedded rowing device that is easy to store, including a housing 1, a magnetic reluctance device body 2 fixedly installed inside the housing 1, a guide plate 3 rotatably installed inside the housing 1, and a second fixing pin 28 for fixing the guide plate 3 is provided on the housing 1, a support plate 4 is rotatably installed at the end of the guide plate 3 away from its rotation axis, and a foot support assembly 29 is provided at the end of the guide plate 3 close to its rotation axis.

[0031] A sliding plate 8 is mounted on the guide plate 3 via pulleys. A seat cushion 18 is provided on the sliding plate 8. A cavity 9 with one end open is provided on the guide plate 3. A back plate 10 is provided inside the cavity 9. A support component 30 for supporting the back plate 10 is provided on the guide plate 3. A limit plate 21 is slidably mounted on the sliding plate 8. The limit plate 21 cooperates with a stop 20 fixedly installed at the end of the sliding plate 8. A pull wire 22 that passes through the stop 20 and is connected to the main body 2 of the magnetoresistive device is connected to the limit plate 21. A push-pull component 31 is provided on the limit plate 21 for the user to drive the limit plate 21 to move.

[0032] In practical application, the housing 1 is combined with the customized cabinet and installed in a suitable position. The second fixing pin 28 is pushed upward to release the fixation of the guide plate 3. Then the guide plate 3 is rotated to a horizontal state. The support plate 4 is rotated to make the support plate 4 contact the ground to support the end of the guide plate 3 and ensure the stability of the guide plate 3. Then the back plate 10 is pulled out from the cavity 9 and placed at an angle. The back plate 10 is supported by the support component 30. After the back plate 10 is adjusted, the seat cushion 18 is rotated to make it horizontal. Then the seat cushion 18 is pushed to the end where the back plate 10 is located and fixed. Then the push-pull component 31 and foot support component 29 are unfolded. At this time, the user sits on the seat cushion 18 and the lower back is in contact with the back plate 10. The user's feet are placed on the foot support component 29 and the feet are fixed to the foot support component 29. The user holds the push-pull component 31 with both hands.

[0033] During exercise, the user pushes off the foot support component 29 with their legs. At this time, the user's lower back is in close contact with the back plate 10, and the back plate 10 pushes the sliding plate 8 to move away from the foot support component 29 along the guide plate 3. Compared with traditional rowing equipment, the back plate 10 supports the user's lower back, ensuring the stability of the user's lower back and thus the stability of the user's body. The back plate 10 does not affect the user's upper back movement, ensuring the training effect of the user's upper back. As the sliding plate 8 moves away from the shell 1, the user pushes the sliding plate 8 with their legs, buttocks and lower back through the back plate 10. As the sliding plate 8 moves away from the shell 1, it does not exert a forward pulling force on the user's lower back and waist through the arms, avoiding the user's waist and lower back from continuously exerting force to maintain body stability, reducing the probability of waist and lower back injury during exercise.

[0034] When the sliding plate 8 moves away from the housing 1, the pull wire 22 is subjected to force under the action of the magnetoresistive device body 2. The pull wire 22 pulls the limiting plate 21 to abut against the stop 20. When the sliding plate 8 moves, it pulls the pull wire 22 outward through the stop 20 and the limiting plate 21. When the pull wire 22 is pulled outward, it resists the resistance generated by the magnetoresistive device body 2, thereby exercising the user's legs. When the user's legs are straightened, the sliding plate 8 reaches its maximum moving distance. At this time, the user pulls the limiting plate 21 away from the stop 20 through the push-pull component 31. The user uses the back to exert force and pulls the limiting plate 21 with the arms to overcome the magnetic resistance. The resistance applied by the main body 2 of the device allows for the exercise of the user's back and arms. When the position of the limiting plate 21 is pulled to its farthest distance, the user stops applying force to the limiting plate 21 and pushes the limiting plate 21 back to its original position. At this time, the pull line 22 retracts. During use, the user's back exerts force to move the limiting plate 21 through the arms. The resistance generated by the main body 2 of the magnetic resistance device will not be actively applied to the user's arms for stretching, thereby avoiding the user's shoulders from exerting continuous force, ensuring the stability of the user's shoulders, and preventing the humerus from shifting forward due to the relaxation of the shoulders and stretching, thus ensuring the user's physical health.

[0035] After the sliding plate 8 has traveled away from the housing 1, the user bends their legs, causing the sliding plate 8 to move towards one side of the housing 1, thus completing the rowing motion by cyclically moving the sliding plate 8. When not in use, the foot support assembly 29 is folded so that the projection of the foot support assembly 29 onto the guide plate 3 is entirely within the range of the guide plate 3. The push-pull assembly 31 is folded and retracted, allowing it to enter the limiting plate 21. At the same time, the fixing of the seat cushion 18 and the fixing of the support assembly 30 onto the back panel 10 are released, and the back panel 10 is pushed into the cavity 9. Then, the seat cushion 18 is rotated 90 degrees. At this point, the projections of the seat cushion 18 and the limiting plate 21 onto the guide plate 3 are entirely within the range of the guide plate 3. Push the sliding plate 8 to one end close to the housing 1, then rotate the guide plate 3 to a vertical position and fix the guide plate 3 with the second fixing pin 28 to complete the storage. At this time, all components are located in the space enclosed by the housing 1 and the guide plate 3. The guide plate 3 blocks the opening side of the housing 1, so that all components can be embedded in the housing 1, which greatly reduces the space occupied by the device after folding and storage. Moreover, the stored device is located in the housing 1, realizing the regular storage of the device without affecting the area near the storage, improving the storage effect. Afterwards, the housing 1 can store household items while storing the guide plate 3, increasing the practicality of the device.

[0036] like Figures 1-4As shown, this invention provides an embedded rowing device that is easy to store. A guide frame 16 is fixedly installed on the sliding plate 8. The limiting plate 21 is slidably connected to the guide frame 16, and the guide frame 16 is fixedly connected to the stop block 20. An mounting plate 17 is slidably installed on the guide frame 16. The seat cushion 18 is rotatably installed on the mounting plate 17. A first fixing pin 19 that cooperates with the guide frame 16 is slidably installed on the mounting plate 17.

[0037] In practical application, the seat cushion 18 is rotated to a horizontal position, and then the mounting plate 17 is pushed to move to one end near the opening of the cavity 9. Then, the position of the seat cushion 18 is fixed by the first fixing pin 19 cooperating with the guide frame 16. When it is not in use and needs to be stored, the fixing of the first fixing pin 19 and the guide frame 16 is released, and then the seat cushion 18 is rotated to a vertical position again. At this time, the seat cushion 18 is located in the area covered by the sliding plate 8, so that the seat cushion 18 overlaps with the sliding plate 8, thereby reducing the space occupied by the seat cushion 18 when stored, making it convenient for storage. The stability of the guide frame 16 and the stop block 20 is increased by connecting the guide frame 16 and the stop block 20. The movement of the limiting plate 21 is guided by the guide frame 16.

[0038] like Figure 2 , Figure 4 and Figure 6 As shown, an embedded rowing device that is easy to store is provided by the present invention. Two sets of sliders 11 are rotatably installed at one end of the back plate 10. The two sets of sliders 11 are distributed on both sides of the back plate 10 and are slidably installed in the cavity 9. A limiting block 12 for limiting the position of the sliders 11 is fixedly installed at the opening position inside the cavity 9.

[0039] Specifically, a pivot 27 for supporting the back plate 10 is rotatably mounted at the open end of the cavity 9.

[0040] In practical application, the back plate 10 is slidably installed in the cavity 9 via the slider 11. When in use, the back plate 10 is pulled out from the cavity 9 to the outside until the slider 11 contacts the limiting block 12. Then, the back plate 10 is rotated to tilt it and abut against the sliding plate 8. At this time, the back plate 10 is supported by the support component 30.

[0041] When not in use, release the support component 30 from the back plate 10, and then rotate the back plate 10 to a horizontal position. At this time, the back plate 10 can be supported by the pivot 27. Then, push the back plate 10 into the cavity 9 to complete the storage of the back plate 10. The pivot 27 supports the back plate 10 to avoid friction between the back plate 10 and the inner wall of the cavity 9, avoid noise during the movement of the back plate 10, and improve the smoothness of the movement of the back plate 10.

[0042] like Figure 1 , Figure 5As shown, the present invention provides an embedded rowing device that is easy to store. The foot support assembly 29 includes a rotating block 5. Two sets of rotating blocks 5 are provided and rotatably mounted on the guide plate 3. A pedal 6 is rotatably mounted on the side of the rotating block 5, and a strap 7 is provided on the pedal 6.

[0043] In practical application, the rotating block 5 is rotated outward. When the rotation axis of the pedal 6 is perpendicular to the side of the guide plate 3, the rotating block 5 rotates to its limit position. The user places both feet on the pedals 6 on both sides and then fixes the feet to the pedals 6 by the straps 7. When the user moves the body closer to or away from the pedal 6 during rowing, the pedal 6 can rotate, thereby keeping the user's ankle at a comfortable angle. The angle can be changed according to the exercise posture to maintain comfortable foot pressure and reduce strain on joints and ligaments.

[0044] When not in use, rotate the rotating block 5 to move the pedal 6 above the guide plate 3. When storing the device, the guide plate 3 will cover the pedal 6, preventing the pedal 6 from being located outside the guide plate 3 and increasing the storage volume, thereby reducing the overall storage volume of the device.

[0045] like Figures 1-4 , Figure 7 As shown, the present invention provides an embedded rowing device that is easy to store. The support assembly 30 includes a support rod 14. Two sets of support rods 14 are provided and rotatably mounted on a sliding plate 8. The sliding plate 8 has a mounting groove 13 for storing the support rods 14. The support rods 14 are located at the opening end of the upper cavity 9 of the sliding plate 8, and the two sets of support rods 14 are distributed on both sides of the back plate 10. The movable end of the support rod 14 is connected to the back plate 10.

[0046] Specifically, the support assembly 30 also includes a connecting rod 15. Two sets of connecting rods 15 are provided and are slidably mounted on both sides of the back plate 10. The connecting rod 15 passes through the support rod 14 and the end of the support rod 14 is threaded with a fixing screw.

[0047] In practical application, after the back plate 10 is tilted and placed, the support rod 14 is removed from the mounting slot 13 and the end of the support rod 14 is rotated to the position of the connecting rod 15. Then, the connecting rod 15 is pulled outward so that it passes through the support rod 14. The position of the connecting rod 15 is fixed by fixing screws. At this time, the back plate 10 can be supported by the support rod 14 to ensure the stability of the back plate 10 in subsequent use.

[0048] like Figures 1-4As shown, the present invention provides an embedded rowing device that is easy to store. The push-pull assembly 31 includes an extension plate 23. Two sets of extension plates 23 are provided and distributed at both ends of the limiting plate 21. The extension plates 23 are slidably installed in the limiting plate 21. The surface of the extension plate 23 away from the sliding plate 8 has a groove and a first vertical rod 24 is rotatably installed in the groove. A second vertical rod 25 is threadedly connected to the first vertical rod 24 and arranged coaxially.

[0049] Specifically, the end of the extension plate 23 away from the limiting plate 21 is threaded with a positioning screw 26 that passes through the first vertical rod 24.

[0050] In practical application, the extension plate 23 is pulled outward and fixed by the fixing screws on the limiting plate 21. The first vertical rod 24 is rotated to a vertical position, and then the positioning screw 26 is used to restrict the first vertical rod 24 to keep it in a vertical position. Then, the second vertical rod 25 is rotated to move the second vertical rod 25 upward to increase the length of the first vertical rod 24. The user then holds the second vertical rod 25 and pulls the limiting plate 21 to move through the first vertical rod 24 and the extension plate 23.

[0051] When not in use, align the first vertical rod 24 with the second vertical rod 25, then release the positioning screw 26 from the first vertical rod 24. After that, lay the first vertical rod 24 down into the groove and push the extension plate 23 into the limiting plate 21 for fixation. At this point, storage is complete, ensuring that the limiting plate 21 after storage is completely within the area covered by the sliding plate 8, thus avoiding any impact on subsequent embedding and storage.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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. An easily retractable embedded rowing device, comprising a housing (1), characterized in that, The main body (2) of the magnetoresistive device is fixedly installed inside the housing (1). A guide plate (3) is rotatably installed inside the housing (1), and a second fixing pin (28) for fixing the guide plate (3) is provided on the housing (1). A support plate (4) is rotatably installed at the end of the guide plate (3) away from its rotation axis, and a foot support assembly (29) is provided at the end of the guide plate (3) close to its rotation axis. A sliding plate (8) is mounted on the guide plate (3) via pulleys. A seat cushion (18) is provided on the sliding plate (8). A cavity (9) with one end open is provided on the sliding plate (8). A back plate (10) is provided inside the cavity (9). A support assembly (30) for supporting the back plate (10) is provided on the sliding plate (8). A limit plate (21) is slidably mounted on the sliding plate (8). The limit plate (21) is used in conjunction with a stop block (20) fixedly installed at the end of the sliding plate (8). A pull wire (22) that passes through the stop block (20) and is connected to the main body (2) of the magnetoresistive device is connected to the limit plate (21). A push-pull assembly (31) is provided on the limit plate (21) for the user to move the limit plate (21).

2. The conveniently stored embedded rowing device according to claim 1, characterized in that, A guide frame (16) is fixedly installed on the sliding plate (8). The limiting plate (21) is slidably connected to the guide frame (16) and the guide frame (16) is fixedly connected to the stop block (20). An mounting plate (17) is slidably installed on the guide frame (16). The seat cushion (18) is rotatably installed on the mounting plate (17). A first fixing pin (19) that works with the guide frame (16) is slidably installed on the mounting plate (17).

3. The conveniently stored embedded rowing device according to claim 1, characterized in that, Two sets of sliders (11) are rotatably mounted on one end of the back plate (10). The two sets of sliders (11) are distributed on both sides of the back plate (10) and are slidably mounted in the cavity (9). A limiting block (12) for limiting the position of the sliders (11) is fixedly installed at the opening position inside the cavity (9).

4. The conveniently stored embedded rowing device according to claim 3, characterized in that, The cavity (9) has a rotating shaft (27) installed at the open end for supporting the back plate (10).

5. The conveniently stored embedded rowing device according to claim 1, characterized in that, The foot support assembly (29) includes a rotating block (5), which is provided in two sets and rotatably mounted on the guide plate (3). A pedal (6) is rotatably mounted on the side of the rotating block (5), and a strap (7) is provided on the pedal (6).

6. The conveniently stored embedded rowing device according to claim 1, characterized in that, The support assembly (30) includes a support rod (14). Two sets of support rods (14) are provided and rotatably mounted on a sliding plate (8). The sliding plate (8) has an installation groove (13) for storing the support rods (14). The support rods (14) are located at the opening end of the upper cavity (9) of the sliding plate (8), and the two sets of support rods (14) are distributed on both sides of the back plate (10). The movable end of the support rod (14) is connected to the back plate (10).

7. The conveniently stored embedded rowing device according to claim 6, characterized in that, The support assembly (30) also includes a connecting rod (15), which is provided in two sets and is slidably mounted on both sides of the back plate (10). The connecting rod (15) passes through the support rod (14) and the end of the support rod (14) is threaded with a fixing screw.

8. The conveniently stored embedded rowing device according to claim 1, characterized in that, The push-pull assembly (31) includes an extension plate (23). Two sets of extension plates (23) are provided and distributed at both ends of the limiting plate (21). The extension plate (23) is slidably installed in the limiting plate (21). A groove is provided on the surface of the extension plate (23) away from the sliding plate (8), and a first vertical rod (24) is rotatably installed in the groove. A second vertical rod (25) is threadedly connected to the first vertical rod (24) and arranged coaxially.

9. The conveniently stored embedded rowing device according to claim 8, characterized in that, The end of the extension plate (23) away from the limiting plate (21) is threaded with a positioning screw (26) that passes through the first vertical rod (24).

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