A rowing machine damping adjustment structure and a rowing machine

Abstract

The application discloses a rowing machine damping adjusting structure, wherein a water storage cavity, a reflux cavity and a control cavity are arranged in a concentric manner in the inside of an outer cover structure; the reflux cavity is communicated with the water storage cavity through a communication gap and a reflux through hole; an installation shaft is rotatably installed in the outer cover structure and arranged at the shaft center of the outer cover structure; driving paddles are uniformly fixed to the installation shaft and placed in the water storage cavity; damping adjusting pieces are arranged in an arc shape and uniformly installed at the communication gap; adjacent two groups of the damping adjusting pieces are nested and combined and kept sealed; a control assembly is installed in the control cavity and linked with each group of the damping adjusting pieces. The application also discloses a rowing machine applying the rowing machine damping adjusting structure. The application can simulate the real rowing effect, ensure that the actual damping matches the set damping when the rowing machine is used, improve the convenience and stability of the damping adjusting, and ensure that the damping adjusting structure has good universality.

Description

Technical Field

[0001] This invention relates to the field of fitness equipment technology, specifically to a rowing machine damping adjustment structure and a rowing machine. Background Technology

[0002] Rowing machines are common fitness equipment that are effective in strengthening the muscles of the legs, waist, upper limbs, chest, and back. Since different users have different usage requirements, it is necessary to install relevant adjustment structures to adjust the damping of the rowing machine in order to meet the damping adjustment needs of specific users.

[0003] Traditional rowing machines and their associated damping adjustment mechanisms mostly rely on electromagnetic damping adjustment components to adjust damping. While this simplifies the structure, it fails to simulate the actual rowing motion, resulting in a degraded user experience. Additionally, some adjustment mechanisms use friction or water flow resistance as rowing damping. In practical applications, this can lead to discrepancies between the adjusted damping and the actual damping, making it difficult to guarantee the stability and convenience of damping adjustment.

[0004] Moreover, traditional rowing machine damping adjustment structures are often applied to compatible rowing machines, resulting in poor compatibility and difficulty in stable installation on different rowing machines. Summary of the Invention

[0005] In view of the above-mentioned shortcomings in the existing technology, the purpose of this invention is to provide a rowing machine damping adjustment structure and a rowing machine, which can enable the rowing machine to simulate the real rowing effect, ensure that the actual damping matches the set damping when the rowing machine is used, improve the convenience and stability of damping adjustment, and ensure that the damping adjustment structure has good versatility.

[0006] The technical solution adopted by the present invention to achieve the above objectives is: a rowing machine damping adjustment structure, including an outer casing structure, a mounting shaft, a drive blade, a damping adjustment component, and a control assembly. The outer casing structure contains a water storage chamber, a return flow chamber, and a control chamber arranged concentrically. The return flow chamber is located around the water storage chamber, with its bottom connected to the water storage chamber via a connecting gap, and its top connected to the top of the water storage chamber via a return flow hole. The control chamber is located at the bottom of the water storage chamber and the return flow chamber, and is sealed and isolated from both. The cover structure has a mounting shaft rotatably installed at the center of the outer cover structure. The drive blades are uniformly fixed to the mounting shaft and arranged in the water storage cavity. The damping adjustment component is set as an arc-shaped structure and uniformly installed in the connecting gap. One end of the damping adjustment component is rotatably installed in the mounting gap. The two ends of the damping adjustment component are respectively provided with an inner notch and an outer notch. The inner notches and outer notches of two adjacent sets of damping adjustment components are nested and combined to maintain a seal. The control component is installed in the control cavity and is linked with each set of damping adjustment components.

[0007] In some of these implementations, to facilitate the stable installation of the mounting shaft, drive blades, damping adjustment components, and control components into the outer casing structure, and to facilitate the processing of the outer casing structure, the following technical solutions regarding the outer casing structure are provided.

[0008] The outer cover structure includes a mounting plate, an upper cover plate, and a lower cover plate. A sealing plate is fixedly connected to the top of the mounting plate, and a recessed groove is provided at the center of the sealing plate. The upper cover plate is fixedly connected to the top of the mounting plate, and a mounting gasket is fixedly connected to the lower side of the upper cover plate. An upper recessed groove is provided on the inner side of the mounting gasket. The upper and lower recessed grooves are vertically opposite to each other and form the water storage cavity. The outer side of the mounting gasket is set as the return cavity. The gap between the mounting gasket and the sealing plate forms the communication gap. Multiple sets of return flow holes are evenly opened on the top of the mounting gasket. The two ends of the return flow holes are respectively connected to the return cavity and the top of the upper recessed groove. The lower cover plate is fixedly connected to the bottom of the mounting plate, and the space between the lower cover plate and the sealing plate forms the control cavity.

[0009] In some implementations, during application, it is necessary to inject clean water into the water storage chamber. Driven by the driving blades, the clean water flows back and forth between the water storage chamber and the return chamber to simulate the sound of water waves in a rowing machine. At the same time, it provides a damping effect when the rowing machine is in use. It is necessary to ensure the sealing effect at the connection between the mounting plate and the top cover plate. Therefore, the following technical solutions are provided.

[0010] The mounting cover plate has an upper nesting groove on the inner side of its top edge, and an upper nesting ring that fits into the upper nesting groove is fixed to the bottom edge of the upper cover plate. An upper sealing ring is nested between the upper nesting groove and the upper nesting ring. The mounting cover plate and the upper cover plate are fixedly connected by multiple sets of radially arranged first bolts.

[0011] In some of these implementations, during application, to ensure that the control components can be stably installed in the control cavity, and to ensure a stable connection between the lower cover and the mounting plate, the following technical solutions are provided.

[0012] The mounting cover plate has a lower nesting groove on the outer side of its bottom edge. The bottom edge of the lower cover plate is fixed with a lower nesting ring that fits into the lower nesting groove. A lower sealing ring is nested between the lower nesting groove and the lower nesting ring. The mounting cover plate and the lower cover plate are fixedly connected by multiple sets of vertically arranged second bolts.

[0013] In some implementations, when the rowing machine damping adjustment structure is used, the following technical solutions are provided to facilitate the injection of clean water into the water storage chamber or the return chamber, or to drain the clean water from the water storage chamber or the return chamber.

[0014] A water injection pipe is fixedly installed on the upper cover plate, and a water injection hopper is fixedly connected to the top of the water injection pipe. The bottom end of the water injection pipe is connected to the upper sinking trough. A vertically arranged drain pipe is connected to the bottom of the lower sinking trough. An installation through hole for insertion and combination with the drain pipe is opened on the lower cover plate. A drain valve arranged on the lower side of the lower cover plate is fixedly connected to the bottom of the drain pipe.

[0015] In some implementations, to facilitate synchronous control of the rotation angle of each damping adjustment component and ensure that the damping adjustment component can be stably installed in the outer casing structure, the following technical solutions are also provided.

[0016] One end of the damping adjustment component is fixedly connected to a connecting shaft, and the connecting shaft is rotatably mounted on the sealing plate. A synchronous pulley is fixedly connected to the bottom end of the connecting shaft, and the synchronous pulley is arranged in the control cavity. A synchronous belt is formed around the synchronous pulley matched on each damping adjustment component, and one set of synchronous pulleys is linked with the control component.

[0017] In some of these implementations, to ensure that the control component can effectively control the damping adjustment component and to ensure that the control component can be stably installed in the control cavity, the following technical solutions for the control component are provided.

[0018] The control assembly includes a mounting frame, a connecting component, a drive gear, a transmission gear, a rotating sleeve, and an adjusting knob. The mounting frame is fixedly mounted on the upper surface of the lower cover plate. The connecting component is rotatably mounted on the mounting frame and plugged into one of the damping adjustment components. The transmission gear is fixedly connected to the connecting component. The rotating sleeve is rotatably mounted on the mounting frame. The drive gear is fixedly connected to the rotating sleeve and meshes with the transmission gear. The adjusting knob is rotatably mounted on the outer wall of the mounting cover and maintains a power connection with the rotating sleeve.

[0019] In some implementations, to ensure that the connecting components in the control assembly can be plugged into and combined with the damping adjustment components to achieve effective power transmission, and to facilitate the disassembly and assembly of the control assembly and the damping adjustment components, the following technical solutions regarding the connecting components are provided.

[0020] A plug-in sleeve is fixedly connected to the damping adjustment component that is plugged into the connecting assembly, and a first spline groove is provided in the plug-in sleeve; the connecting assembly includes a sliding sleeve, a first spline shaft, and a first support spring. The sliding sleeve is rotatably mounted on the mounting frame, the first spline shaft is slidably mounted in the sliding sleeve and nested into the first spline groove, the first support spring is arranged in the sliding sleeve, and the two ends of the first support spring are fixedly connected to the bottom end of the first spline shaft and the bottom wall of the sliding sleeve, respectively. The transmission gear is fixedly connected to the sliding sleeve.

[0021] In some implementations, after the attitude adjustment of the damping adjustment component is completed by the control component, in order to ensure that the damping adjustment component is in a locked state and to avoid the attitude change of the damping adjustment component being affected by the water flow in the water storage chamber and the return chamber, while ensuring that the adjustment knob can stably transmit power to the rotating sleeve, the following technical solution is provided.

[0022] The control assembly also includes a self-locking assembly, which comprises a second spline shaft, an adjustment button, a first end face gear, a second end face gear, a sliding rod, and a second support spring. The rotating sleeve has a second spline groove that is nested and inserted into the second spline shaft. The second spline shaft, the second spline groove, and the adjustment knob are slidably connected. The adjustment button is fixed to the outer end of the second spline shaft and arranged outside the adjustment knob. The first end face gear is fixed to the mounting frame, and the second spline shaft passes through the axis of the first end face gear. The second end face gear meshes with the first end face gear and is fixed to the inner end of the second spline shaft. The sliding rod is slidably mounted on the mounting frame and rotatably connected to the inner end of the second spline shaft. The second support spring is wound around the outer end of the sliding rod, and both ends of the second support spring abut against the sliding rod and the mounting frame, respectively.

[0023] A rowing machine, equipped with the aforementioned rowing machine damping adjustment structure.

[0024] The beneficial effects of this invention are as follows: After adding the damping adjustment structure provided in this application to the rowing machine, the resistance of water flow is used as the damping effect of the rowing machine, enabling it to simulate the real rowing effect. Furthermore, damping adjustment can be performed by operating the adjustment knob or button. After the attitude of the damping adjustment component is adjusted, it can be locked by a self-locking component, ensuring that the actual damping matches the set damping during use, thus improving the convenience and stability of damping adjustment. The damping adjustment structure provided in this application has good versatility and can be stably installed on different types of rowing machines. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0026] Figure 2 For the Figure 1 A schematic diagram of the exterior structure from another perspective;

[0027] Figure 3 This is a schematic diagram of the structure after the outer cover is cut apart;

[0028] Figure 4 For the Figure 3 A structural diagram from another perspective;

[0029] Figure 5 This is a cross-sectional view of the assembled outer casing structure;

[0030] Figure 6 For the Figure 5 Enlarged detail diagram of part A in the middle;

[0031] Figure 7 For the Figure 5 Enlarged detail diagram of section B;

[0032] Figure 8 This is a cross-sectional view of the disassembled outer casing structure;

[0033] Figure 9 A schematic diagram of the assembly of the mounting shaft and the driving slurry;

[0034] Figure 10 A schematic diagram of the structure after the damping adjustment components are assembled;

[0035] Figure 11 This is a schematic diagram of a single damping adjustment component;

[0036] Figure 12 A schematic diagram of the structure in which the control components are installed in the mounting plate;

[0037] Figure 13 A schematic diagram of the cross-section of the control component;

[0038] Figure 14 For the Figure 13 A structural diagram of section C;

[0039] Figure 15 For the Figure 13 A schematic diagram of the structure of part D.

[0040] In the diagram: 1. Outer casing structure; 111. Water storage chamber; 112. Return chamber; 113. Control chamber; 114. Connecting gap; 115. Return flow hole; 12. Mounting cover plate; 121. Sealing plate; 122. Lower sink; 13. Upper cover plate; 131. Mounting gasket; 132. Upper sink; 14. Lower cover plate; 151. Upper sealing ring; 152. First bolt; 153. Lower sealing ring; 154. Second bolt; 161. Water injection pipe; 162. Water injection hopper; 163. Sealing cover; 171. Drain pipe; 172. Drain valve; 18. Mounting base; 181. Empty slot; 2. 3. Mounting shaft, 4. Drive blade, 5. Damping adjustment component, 6. Inner notch, 7. Outer notch, 8. Connecting shaft, 9. Synchronous pulley, 10. Synchronous belt, 11. Insert sleeve, 12. Control assembly, 13. Mounting frame, 14. Sliding sleeve, 15. First splined shaft, 16. First support spring, 17. Drive gear, 18. Transmission gear, 19. Rotating sleeve, 10. Adjustment knob, 11. Second splined shaft, 12. Adjustment button, 13. First end face gear, 14. Second end face gear, 15. Sliding rod, 16. Second support spring. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figure 1-15 The following embodiments will be used to illustrate the structure, operation, and running principle of this application.

[0043] Example 1

[0044] A rowing device damping adjustment structure includes an outer casing 1, a mounting shaft 2, a drive blade 3, a damping adjustment component 4, and a control assembly 5. The outer casing 1 contains a water storage chamber, a return flow chamber 112, and a control chamber 113 arranged concentrically. The return flow chamber 112 is located around the water storage chamber, with its bottom connected to the water storage chamber via a connecting gap 114, and its top connected to the top of the water storage chamber via a return flow hole 115. The control chamber 113 is located at the bottom of the water storage chamber and the return flow chamber 112, and is sealed and isolated from both. A mounting shaft 2 is rotatably mounted on the center of the outer cover structure 1. The drive blades 3 are uniformly fixed to the mounting shaft 2 and arranged in the water storage cavity. The damping adjustment component 4 is set as an arc structure and is uniformly installed at the connecting gap 114. One end of the damping adjustment component 4 is rotatably installed in the mounting gap. The two ends of the damping adjustment component 4 are respectively provided with an inner layer notch 41 and an outer layer notch 42. The inner layer notches 41 and outer layer notches 42 of two adjacent sets of damping adjustment components 4 are nested and combined and kept sealed. The control component 5 is installed in the control cavity 113 and is linked with each set of damping adjustment components 4.

[0045] The aforementioned damping adjustment structure is installed on the rowing machine. The outer cover structure 1 is fixedly connected to the rowing machine, while the mounting shaft 2 is poweredly connected to the pull belt on the rowing machine. When the rowing machine is used, the pull belt is pulled back and forth, which in turn drives the mounting shaft 2 to rotate. At this time, the drive blade 3 will rotate synchronously with the mounting shaft 2, thereby agitating the water in the water storage chamber. Under the action of centrifugal force, the water will flow along the connecting gap 114 to the outer return chamber 112. The water in the return chamber 112 will flow back into the top of the water storage chamber through the return flow hole 115, thereby creating a water flow effect and water flow sound to simulate the sound of water waves stirred up by the oars during rowing.

[0046] In the outer casing structure 1, each damping adjustment component 4 is installed at the connecting gap 114. By adjusting the posture of each damping adjustment component 4, the opening and closing state of the connecting gap 114 can be adjusted, thereby controlling the flow rate of clean water from the water storage chamber to the return chamber 112. When the clean water in the water storage chamber has difficulty effectively entering the return chamber 112, the amount of clean water interacting with the drive blade 3 in the water storage chamber increases, which will increase the power required to drive the mounting shaft 2 and the drive blade 3, thereby increasing the damping effect of the rowing device.

[0047] In the outer casing structure 1, the control chamber 113 is not connected to the water storage chamber and the return chamber 112. The control chamber 113 is equipped with a control component 5, which is linked with each damping adjustment component 4 to adjust the attitude of the damping adjustment component 4, thereby adjusting the opening and closing degree of the connecting gap 114, so as to achieve the effect of adjusting the damping of the rowing machine.

[0048] The control component 5 can control each damping adjustment component 4 to rotate synchronously at the same angle, thereby opening the damping adjustment components 4 that are sealed together, realizing the on / off adjustment of the communication gap 114, and ensuring that the clean water in the water storage chamber can enter the return chamber 112 evenly in all directions.

[0049] Example 2

[0050] To facilitate the stable installation of the mounting shaft 2, drive blade 3, damping adjustment component 4, and control component 5 into the outer cover structure 1, and to facilitate the processing of the outer cover structure 1, the following technical solution for the outer cover structure 1 is provided.

[0051] The outer cover structure 1 includes a mounting plate 12, an upper cover plate 13, and a lower cover plate 14. A sealing plate 121 is fixedly connected to the top of the mounting plate 12, and a sinking groove 122 is provided at the center of the sealing plate 121. The upper cover plate 13 is fixedly connected to the top of the mounting plate 12. A mounting gasket 131 is fixedly connected to the lower side of the upper cover plate 13, and an upper sinking groove 132 is provided on the inner side of the mounting gasket 131. The upper sinking groove 132 and the lower sinking groove 122 are vertically opposite to each other and form a water storage cavity. The outer side of the mounting gasket 131 is set as a return cavity 112. The gap between the mounting gasket 131 and the sealing plate 121 forms a communication gap 114. Multiple sets of return flow holes 115 are evenly opened on the top of the mounting gasket 131. The two ends of the return flow holes 115 are respectively connected to the return cavity 112 and the top of the upper sinking groove 132. The lower cover plate 14 is fixedly connected to the bottom of the mounting plate 12, and the space between the lower cover plate 14 and the sealing plate 121 forms a control cavity 113.

[0052] The outer cover structure 1 is divided into three parts: mounting plate 12, upper cover plate 13, and lower cover plate 14. When processing the outer cover structure 1, the above three parts can be processed separately, which facilitates the effective processing of the internal water storage chamber, return chamber 112, control chamber 113, connecting gap 114, and return flow hole 115.

[0053] Based on this, the mounting shaft 2 can be easily installed into the outer cover structure 1, while the flanged drive blade 3 is installed onto the mounting shaft 2 and uniformly installed in the water storage cavity.

[0054] Example 3

[0055] During application, clean water needs to be injected into the water storage chamber. Driven by the driving blade 3, the clean water flows back and forth between the water storage chamber and the return chamber 112 to simulate the sound of water waves in the rowing machine. At the same time, it provides a damping effect when the rowing machine is in use. It is necessary to ensure the sealing effect at the connection between the mounting plate 12 and the upper cover plate 13. Therefore, the following technical solution is provided.

[0056] The mounting cover plate 12 has an upper nesting groove on the inner side of its top edge. The bottom edge of the upper cover plate 13 is fixed with an upper nesting ring that fits into the upper nesting groove. An upper sealing ring 151 is nested between the upper nesting groove and the upper nesting ring. The mounting cover plate 12 and the upper cover plate 13 are fixedly connected by multiple sets of radially arranged first bolts 152.

[0057] The nested combination of the upper nested groove and the upper nested ring ensures a stable combination between the upper cover plate 13 and the mounting cover plate 12. The upper sealing ring 151 seals the gap at the connection between the two, preventing leakage from the gap during the stirring of water by the driving blade 3. The first bolt 152 is arranged radially and fixes the mounting cover plate 12 and the upper cover plate 13, thereby achieving the effect of fixing the mounting cover plate 12 and the upper cover plate 13.

[0058] To facilitate the display of the water flow in the outer cover structure 1 and improve the overall aesthetics of the rowing machine, the upper cover plate 13 can be made transparent.

[0059] In order to ensure that the control component 5 can be stably installed in the control cavity 113 during application, and to ensure that the lower cover plate 14 is stably connected to the mounting cover plate 12, the following technical solution is provided.

[0060] The mounting cover plate 12 has a lower nesting groove on the outer side of its bottom edge. The bottom edge of the lower cover plate 14 is fixed with a lower nesting ring that fits into the lower nesting groove. A lower sealing ring 153 is nested between the lower nesting groove and the lower nesting ring. The mounting cover plate 12 and the lower cover plate 14 are fixedly connected by multiple sets of vertically arranged second bolts 154.

[0061] The nested combination of the lower nested groove and the lower nested ring ensures a stable combination between the lower cover plate 14 and the mounting cover plate 12, and the lower sealing ring 153 ensures the sealing at the connection between the two. To facilitate the stable installation of the outer cover structure 1 and the components installed therein on the rowing machine, and to provide adjustable damping when the rowing machine is in use after the matching combination is achieved, a mounting base 18 is fixed to the bottom of the lower cover plate 14. The mounting base 18 has a hollow groove 181 inside, and the bottom end of the mounting shaft 2 passes through the lower cover plate 14 and is arranged in the hollow groove 181, which can improve the stability of the mounting shaft 2 in the rotational installation in the outer cover structure 1.

[0062] Example 4

[0063] When using the rowing machine damping adjustment structure, in order to facilitate the injection of clean water into the water storage chamber and the return chamber 112, or to discharge the clean water from the water storage chamber and the return chamber 112, the following technical solutions are also provided.

[0064] A water injection pipe 161 is fixedly installed on the upper cover plate 13. A water injection hopper 162 is fixedly connected to the top of the water injection pipe 161. The bottom end of the water injection pipe 161 is connected to the upper sinking trough 132. A vertically arranged drain pipe 171 is connected to the bottom of the lower sinking trough 122. An installation through hole for insertion and combination with the drain pipe 171 is opened on the lower cover plate 14. A drain valve 172 arranged on the lower side of the lower cover plate 14 is fixedly connected to the bottom of the drain pipe 171.

[0065] When injecting clean water into the water storage chamber, the sealing cover 163 is opened, and the clean water is injected from the water injection hopper 162 and enters the water storage chamber along the water injection pipe 161. This allows for the rapid filling of clean water. The sealing cover 163 prevents some clean water from spilling out from the water injection hopper 162 when the driving blade 3 agitates the clean water.

[0066] When water is drained from the water storage chamber, the drain valve 172 is opened to quickly drain the water from the water storage chamber and the return chamber 112. The drain pipe 171 is arranged vertically so that it can be connected to the drain valve 172 after extending out of the lower cover plate 14.

[0067] Example 5

[0068] To facilitate synchronous control of the rotation angle of each damping adjustment component 4 and ensure that the damping adjustment component 4 can be stably installed in the outer cover structure 1, the following technical solution is also provided.

[0069] One end of the damping adjustment component 4 is fixedly connected to a connecting shaft 43, and the connecting shaft 43 is rotatably mounted on the sealing plate 121. The bottom end of the connecting shaft 43 is fixedly connected to a synchronous pulley 44, and the synchronous pulley 44 is arranged in the control cavity 113. The synchronous pulley 44 matched on each damping adjustment component 4 is surrounded by a synchronous belt 45, and one set of synchronous pulleys 44 is linked with the control component 5.

[0070] When the control component 5 drives the synchronous wheel 44 linked with it to rotate, the combination relationship between the synchronous wheel 44 and the synchronous belt 45 will drive each connecting shaft 43 and the damping adjustment component 4 to rotate synchronously, thereby opening each damping adjustment component 4 to equal gaps, ensuring that the clean water in the water storage chamber flows evenly to the return chamber 112 in all directions.

[0071] Example 6

[0072] To ensure that the control component 5 can be effectively controlled with the damping adjustment component 4, and to ensure that the control component 5 can be stably installed in the control cavity 113, the following technical solution for the control component 5 is provided.

[0073] The control component 5 includes a mounting frame 51, a connecting component, a drive gear 53, a transmission gear 54, a rotating sleeve 55, and an adjusting knob 56. The mounting frame 51 is fixedly mounted on the upper surface of the lower cover plate 14. The connecting component is rotatably mounted on the mounting frame 51 and is plugged into one of the damping adjustment components 4. The transmission gear 54 is fixedly connected to the connecting component. The rotating sleeve 55 is rotatably mounted on the mounting frame 51. The drive gear 53 is fixedly connected to the rotating sleeve 55 and maintains meshing with the transmission gear 54. The adjusting knob 56 is rotatably mounted on the outer wall of the mounting cover plate 12 and maintains a power connection with the rotating sleeve 55.

[0074] When the control adjustment knob 56 is rotated, it can drive the rotating sleeve 55 and the drive gear 53 mounted on it to rotate stably, thereby driving the transmission gear 54 and the connecting assembly to rotate stably. The connecting assembly drives the damping adjustment component 4 that is plugged into it to rotate stably. Through the combination of the synchronous pulley 44 and the synchronous belt 45, each damping adjustment component 4 is driven to rotate synchronously, thereby synchronously adjusting the attitude of each damping adjustment component 4.

[0075] The mounting frame 51 is designed to ensure that each component in the control assembly 5 is stably installed in the control cavity 113. To ensure that the adjustment knob 56 is installed in the appropriate position, the drive gear 53 and the transmission gear 54 are set as bevel gears.

[0076] To ensure that the connecting component in the control assembly 5 can be plugged into and combined with the damping adjustment component 4 to achieve effective power transmission, and to facilitate the disassembly and assembly of the control assembly 5 and the damping adjustment component 4, the following technical solution for the connecting component is provided.

[0077] A plug-in sleeve 46 is fixedly connected to the damping adjustment component 4, which is connected to the connecting component, and a first spline groove is provided in the plug-in sleeve 46; the connecting component includes a sliding sleeve 521, a first spline shaft 522, and a first support spring 523. The sliding sleeve 521 is rotatably mounted on the mounting frame 51. The first spline shaft 522 is slidably mounted in the sliding sleeve 521 and nested with the first spline groove. The first support spring 523 is arranged in the sliding sleeve 521, and both ends of the first support spring 523 are fixedly connected to the bottom end of the first spline shaft 522 and the bottom wall of the sliding sleeve 521, respectively. The transmission gear 54 is fixedly connected to the sliding sleeve 521.

[0078] In actual operation, the first spline shaft 522 in the connecting assembly needs to be nested and inserted into the first spline groove in the insert sleeve 46. Since the internal space of the control cavity 113 is limited, the first spline shaft 522 can be pressed down and slid to retract into the sliding sleeve 521. At this time, the first support spring 523 is in a compressed state. When the first spline shaft 522 is aligned with the first spline groove in the insert sleeve 46, the first spline shaft 522 is driven to slide upward under the action of the first support spring 523 so that the first spline shaft 522 is inserted into the first spline groove, thus completing the effective combination of the connecting assembly and the corresponding damping adjustment component 4.

[0079] To ensure that the first spline shaft 522 can be stably installed in the sliding sleeve 521, a sliding guide groove is provided inside the sliding sleeve 521, and a sliding guide block nested with the sliding guide groove is fixed to the bottom of the first spline shaft 522, which can ensure that the first spline shaft 522 slides stably along the axial direction of the sliding sleeve 521.

[0080] The insertion sleeve 46 is fixed to the bottom of the synchronous wheel 44 of the corresponding damping adjustment component 4, so that the first spline shaft 522 and the first spline groove are stably aligned.

[0081] After the attitude adjustment of the damping adjustment component 4 is completed by the control component 5, in order to ensure that the damping adjustment component 4 is in a locked state and to avoid the attitude change of the damping adjustment component 4 being affected by the water flow in the water storage chamber and the return chamber 112, and at the same time to ensure that the adjustment knob 56 can stably transmit power to the rotating sleeve 55, the following technical solution is provided.

[0082] The control assembly 5 also includes a self-locking assembly, which includes a second spline shaft 571, an adjustment button 572, a first end face gear 573, a second end face gear 574, a sliding rod 575, and a second support spring 576. A second spline groove is provided in the rotating sleeve 55 to nest and insert with the second spline shaft 571. The second spline shaft 571, the second spline groove, and the adjustment knob 56 maintain a sliding connection. The adjustment button 572 is fixed to the outer end of the second spline shaft 571 and arranged outside the adjustment knob 56. The face gear 573 is fixedly connected to the mounting frame 51, and the second spline shaft 571 passes through the axis of the first face gear 573. The second face gear 574 meshes with the first face gear 573 and is fixedly connected to the inner end of the second spline shaft 571. The sliding rod 575 is slidably mounted on the mounting frame 51 and rotatably connected to the inner end of the second spline shaft 571. The second support spring 576 is wound around the outer end of the sliding rod 575, and the two ends of the second support spring 576 abut against the sliding rod 575 and the mounting frame 51, respectively.

[0083] When adjusting the attitude of the damping adjustment component 4 by rotating the adjustment knob 56, first keep the adjustment button 572 pressed. At this time, the second end face gear 574 is driven by the spline shaft to move inward, causing the first end face gear 573 to separate from the second end face gear and release the locking state. At this time, the second support spring 576 is in a compressed state.

[0084] Based on the above description, the adjustment knob 56 can be rotated freely, which simultaneously drives the second spline shaft 571, the rotating sleeve 55, and the drive gear 53 to rotate synchronously, thereby driving the damping adjustment component 4 to rotate to adjust its posture.

[0085] After the attitude adjustment of the damping adjustment component 4 is completed, the pressing state of the adjustment button 572 is canceled. The second support spring 576 drives the second end face gear 574, the second spline shaft 571, and the sliding rod 575 to reset. The first end face gear 573 and the second end face gear 574 re-mesh and lock to restrict the free rotation of the second spline shaft 571, thereby locking the rotating sleeve 55, the drive gear 53, the transmission gear 54, and the damping adjustment component 4, ensuring that the damping adjustment component 4 changes its own attitude due to the flow of clean water when the rowing machine is in use.

[0086] The sliding rod 575 ensures that the second spline shaft 571 slides stably in the horizontal direction, and also ensures that the second support spring 576 is stably installed, thereby providing the effect of resetting the second end face gear 574 and engaging and locking it with the first end face gear 573.

[0087] Example 7

[0088] A rowing machine, equipped with a rowing machine damping adjustment structure as provided in Examples 1-7.

[0089] To ensure effective linkage between the rowing machine's damping adjustment structure and the operating components on the rowing machine, a power transmission component is often fitted at the top of the mounting shaft 2. This component can be a gear, sprocket, or timing pulley, thereby achieving power connection with the operating components.

[0090] After installing the damping adjustment structure provided in this application on the rowing machine, the resistance of water flow is used as the damping effect of the rowing machine, enabling it to simulate the real rowing effect. Simultaneously, damping adjustment can be performed by operating the adjustment knob 56 and adjustment button 572. After the attitude adjustment component 4 is completed, it can be locked by a self-locking assembly, ensuring that the actual damping matches the set damping during rowing machine use, thus improving the convenience and stability of damping adjustment. The damping adjustment structure provided in this application has good versatility and can be stably installed on different types of rowing machines.

[0091] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0092] 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. A rowing machine damping adjustment structure, characterized by: The utility model provides a water conservancy damper, including cover structure (1), installation shaft (2), drive paddle (3), damping adjustment spare (4), control assembly (5), the inside of cover structure (1) is provided with the water storage cavity that keeps concentric arrangement, reflux cavity (112), control cavity (113), the reflux cavity (112) is arranged in the water storage cavity periphery, and the bottom of reflux cavity (112) is connected with the water storage cavity through the communication gap (114), and the top of reflux cavity (112) is communicated with the water storage cavity top through reflux through -hole (115), control cavity (113) is arranged in the water storage cavity, the bottom of reflux cavity (112) and keeps sealed with the water storage cavity, the water storage cavity of reflux cavity (112), the installation shaft (2) of rotating installation is set up in the cover structure (1) axle center of cover structure (1), drive paddle (3) is evenly fixed to installation shaft (2) and is arranged in the water storage cavity, damping adjustment spare (4) is set to arc structure and is evenly installed at the communication gap (114), and one end of damping adjustment spare (4) is rotatably installed to installation gap, and the both ends of damping adjustment spare (4) are provided with inner layer notch (41), outer layer notch (42) respectively, and the inner layer notch (41) of adjacent two groups of damping adjustment spare (4), outer layer notch (42) are nested combination and keep sealed, control assembly (5) is installed in control cavity (113) and is linked with each group of damping adjustment spare (4).

2. The rowing machine damping adjustment structure according to claim 1, characterized in that: The cover structure (1) includes installation cover disc (12), upper cover disc (13), lower cover plate (14), the top of installation cover disc (12) is fixedly connected with sealing plate (121), the center of sealing plate (121) is provided with sunken groove (122), upper cover disc (13) is fixedly connected to the top of installation cover disc (12), and installation grommet (131) is fixedly connected to the lower side of upper cover disc (13), and the inner side of installation grommet (131) is provided with upper sunken groove (132), and upper sunken groove (132) is vertically opposite with sunken groove (122) and constitutes the water storage cavity, the outer side of installation grommet (131) is provided with the reflux cavity (112), and the space between installation grommet (131) and sealing plate (121) constitutes the communication gap (114), and the top of installation grommet (131) is evenly provided with a plurality of reflux through -holes (115), and the both ends of reflux through -hole (115) are communicated with the top of reflux cavity (112) and upper sunken groove (132) respectively, the lower cover plate (14) is fixedly connected to the bottom of installation cover disc (12), and the space between lower cover plate (14) and sealing plate (121) constitutes the control cavity (113).

3. The rowing machine damping adjustment structure according to claim 2, characterized in that: The inner side of the top edge of installation cover disc (12) is provided with upper nested groove, the bottom edge of upper cover disc (13) is fixedly connected with the upper nested ring that is nested with upper nested groove, and upper sealing rubber ring (151) is nested between upper nested groove and upper nested ring, and the installation cover disc (12) and upper cover disc (13) are fixedly connected through a plurality of radially arranged first bolts (152).

4. The rowing machine damping adjustment structure according to claim 2, characterized in that: The bottom edge of the mounting cover disc (12) is provided with a lower nesting groove, and the bottom edge of the lower cover plate (14) is fixedly connected with a lower nesting ring matched with the lower nesting groove. A lower sealing rubber ring (153) is nested between the lower nesting groove and the lower nesting ring. The mounting cover disc (12) and the lower cover plate (14) are fixedly connected by a plurality of vertically arranged second bolts (154).

5. The rowing machine damping adjustment structure according to claim 2, characterized in that: The upper cover disc (13) is fixedly provided with a water injection pipe (161), and the top of the water injection pipe (161) is fixedly connected with a water injection bucket (162). The bottom end of the water injection pipe (161) is in communication with the upper sink (132). The bottom of the lower sink (122) is communicated with a vertically arranged drain pipe (171). The lower cover plate (14) is provided with a mounting through hole matched with the drain pipe (171). The bottom of the drain pipe (171) is fixedly connected with a drain valve (172) arranged on the lower side of the lower cover plate (14).

6. The rowing machine damping adjustment structure according to claim 2, characterized in that: One end of the damping adjusting part (4) is fixedly connected with a connecting shaft (43), and the connecting shaft (43) is rotatably installed on the sealing plate (121). The bottom end of the connecting shaft (43) is fixedly connected with a synchronous wheel (44), and the synchronous wheel (44) is arranged in the control cavity (113). The periphery of the synchronous wheel (44) is provided with a synchronous belt (45). One group of synchronous wheels (44) is connected with the control assembly (5).

7. The rowing machine damping adjustment structure according to claim 2, characterized in that: The control assembly (5) comprises a mounting frame (51), a connecting assembly, a drive gear (53), a transmission gear (54), a rotating sleeve (55), and an adjusting knob (56). The mounting frame (51) is fixedly installed on the upper surface of the lower cover plate (14). The connecting assembly is rotatably installed on the mounting frame (51) and is matched with one group of damping adjusting parts (4). The transmission gear (54) is fixedly connected with the connecting assembly. The rotating sleeve (55) is rotatably installed on the mounting frame (51). The drive gear (53) is fixedly connected with the rotating sleeve (55) and is in engagement with the transmission gear (54). The adjusting knob (56) is rotatably installed on the outer wall of the mounting cover disc (12) and is in power connection with the rotating sleeve (55).

8. The rowing machine damping adjustment structure according to claim 7, characterized in that: The damping adjusting part (4) matched with the connecting assembly is fixedly connected with a matched sleeve (46), and the matched sleeve (46) is provided with a first spline groove. The connecting assembly comprises a sliding sleeve (521), a first spline shaft (522), and a first supporting spring (523). The sliding sleeve (521) is rotatably installed on the mounting frame (51). The first spline shaft (522) is slidably installed in the sliding sleeve (521) and is nested with the first spline groove. The first supporting spring (523) is arranged in the sliding sleeve (521) and is fixedly connected with the bottom end of the first spline shaft (522) and the bottom wall of the sliding sleeve (521). The transmission gear (54) is fixedly connected with the sliding sleeve (521).

9. The rowing machine damping adjustment structure according to claim 7, characterized in that: The operation assembly (5) further comprises a self-locking assembly, and the self-locking assembly comprises a second spline shaft (571), an adjusting button (572), a first face gear (573), a second face gear (574), a sliding rod (575) and a second supporting spring (576), a second spline groove is formed in the rotating sleeve (55) and is nested and connected with the second spline shaft (571), the second spline shaft (571) is slidingly connected with the second spline groove and the adjusting knob (56), the adjusting button (572) is fixedly connected to the outer side of the second spline shaft (571) and is arranged outside the adjusting knob (56), the first face gear (573) is fixedly connected to the mounting frame (51), and the second spline shaft (571) is arranged through the axis of the first face gear (573), the second face gear (574) is engaged with the first face gear (573) and is fixedly connected to the inner side of the second spline shaft (571), the sliding rod (575) is slidingly mounted on the mounting frame (51) and is rotationally connected to the inner side of the second spline shaft (571), and the second supporting spring (576) is wound around the outer side of the sliding rod (575), and the two ends of the second supporting spring (576) are respectively abutted against the sliding rod (575) and the mounting frame (51).

10. A rowing machine characterised in that: A rowing machine damping adjusting structure according to any one of claims 1-9 is installed in a matched manner.

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