Rowing machine

Abstract

The present invention relates to fitness equipment, and discloses a rowing machine. A water injection pipe (6) is vertically penetrated on a bracket (1) and is located between two inner covers (3). The end of the water injection pipe (6) close to a water tank (2) extends to both sides to form water distribution pipes (7). The two water distribution pipes (7) are respectively connected to the two inner covers (3) to respectively communicate with two water storage cavities (5). For the rowing machine of the present invention, when the water tank (2) needs to be filled with water, first place the bracket (1) in an upright state, and add water to the water injection pipe (6) by means of a water pump and a water addition pipe. The water flow sequentially passes through the water injection pipe (6) and the water distribution pipes (7) on both sides, and finally is evenly distributed into the water storage cavities (5) of the two water tanks (2). After the water tank (2) is filled with water, the sealing cover (8) can be re-covered to seal the opening of the water injection pipe (6). When the water tank (2) needs to be drained, first place the bracket (1) of the rowing machine horizontally, and then directly open the sealing cover (8), and the water can be directly drained through the opening of the water injection pipe (6), which is simpler and faster. After the drainage is completed, re-seal the opening of the water injection pipe (6) with the sealing cover (8).

Description

Technical Field

[0001] The present invention relates to fitness equipment, and particularly to a rowing machine. Background Art

[0002] A rowing machine is a machine used for training purposes to simulate the water rowing sport. Indoor rowing competitions have become a professional competition. An indoor rowing machine is also commonly referred to as a dynamometer, which can measure the energy consumed by a user during exercise. The rowing machine has a good effect on strengthening the muscles of the legs, waist, upper limbs, chest, and back. Each rowing motion causes the upper limbs, lower limbs, waist and abdomen, and back to complete a full contraction and extension, achieving an aerobic exercise effect for the whole body muscles. For example, the utility model patent with the publication number CN208611662U discloses a water resistance rowing fitness machine, including a bracket, a water tank fixed on the bracket, a linkage mechanism, and an angle adjustment mechanism. The water tank is internally provided with a first impeller and a second impeller. The first impeller includes a first plate portion and a plurality of first blades distributed around the first plate portion. The second impeller includes a second plate portion and a plurality of second blades distributed around the second plate portion.

[0003] For the above rowing machine, the two water tanks are respectively arranged on both sides of the bracket. Although it can reduce the lateral occupied space of the rowing machine and increase the balance and stability during the operation of the rowing machine. However, when changing the water, the user needs to change the water in the two water tanks respectively, and the process is relatively cumbersome, so there is still room for improvement. Summary of the Invention

[0004] Aiming at the disadvantages of the prior art, the present invention provides a rowing machine that can simultaneously drain or fill water in two water tanks, improving the convenience of changing the water in the water tanks.

[0005] To solve the above technical problems, the present invention is solved by the following technical solutions:

[0006] A rowing machine, comprising a horizontally placed bracket and water tanks located at one end of the bracket and disposed on both sides of the bracket. Each water tank includes an inner cover fixed to the side of the bracket and an outer cover hermetically covering the outside of the inner cover. The outer cover is recessed away from the inner cover to form a water storage cavity. A water injection pipe vertically penetrating through the bracket is located between the two inner covers. The end of the water injection pipe close to the water tank extends to both sides with water distribution pipes. The two water distribution pipes are respectively connected to the two inner covers to respectively communicate with the two water storage cavities. The port of the water injection pipe away from the water tank is located on the side of the bracket away from the water tank and is provided with a sealing cover. A water through pipe is arranged between the two inner covers and on the side away from the water injection pipe. The two ends of the water through pipe are respectively connected to the two inner covers to respectively communicate with the two water storage cavities; an overhead pipe extends from the end of the bracket close to the water tank in a direction away from the water tank. The end of the overhead pipe away from the bracket vertically extends to both sides with balance pipes. A support frame is arranged below the end of the bracket away from the water tank; a support rod is extended from the position of the bracket close to the water tank and is located between the two inner covers. A support bar extends from the rod body of the support rod on the side close to the balance pipe. A support block is arranged at the end of the support bar away from the support rod; when the bracket is in an upright state, the support block and the body of the balance pipe simultaneously support on the ground and the bracket is inclined towards the support block.

[0007] With the above scheme, when the bracket of the rowing machine is placed horizontally, the device can be used normally. When the water tank needs to be filled with water, first place the bracket in an upright state so that the support block and the body of the balance pipe simultaneously support on the ground, thereby making the entire rowing machine stable in the upright state. At this time, the opening of the water injection pipe originally located at the bottom of the bracket is switched to a horizontal state. The user can insert a water filling pipe into the opening of the water injection pipe and add water to the water injection pipe with the help of a water pump and the water filling pipe. The water flows through the water injection pipe and the water distribution pipes on both sides in sequence, and finally evenly diverges into the water storage cavities of the two water tanks. The water through pipe arranged between the two water tanks can not only ensure that the water volumes in the two water tanks increase synchronously, but also prevent the water injection from being blocked. After the water tank is filled with water, the sealing cover can be re-covered to seal the opening of the water injection pipe. When the water tank needs to be drained, first place the bracket of the rowing machine horizontally, and then directly open the sealing cover, and the water can be directly drained through the opening of the water injection pipe, which is more simple and fast. After the drainage is completed, re-seal the opening of the water injection pipe with the sealing cover. When the bracket of the rowing machine is in a horizontal state, the overhead pipe and the support frame above the balance pipe can create a gap between the bracket and the ground, which is convenient for the user to open and close the sealing cover, making it more user-friendly.

[0008] Preferably, an opening and closing detection unit for detecting whether the sealing cover is closed to output an opening and closing detection signal is arranged on the side of the bracket away from the water tank. A controller for receiving the opening and closing detection signal is coupled to the opening and closing detection unit. An alarm is coupled to the controller; a detection hole is opened on the side of the support block away from the support bar, and a proximity sensor for detecting whether there is an external object approaching the support block to output a corresponding proximity signal to the controller is installed in the detection hole;

[0009] When the bracket is in the upright state, if the proximity sensor detects that an external object approaches the detection hole, the controller controls the alarm to stop alarming;

[0010] If the proximity sensor detects that an external object moves away from the detection hole, the controller controls the opening / closing detection unit to detect the opening / closing state of the sealing cover; if the opening / closing detection unit detects that the sealing cover is in the open state, the controller controls the alarm to alarm; conversely, if the opening / closing detection unit detects that the sealing cover is in the closed state, the controller controls the alarm to stop alarming.

[0011] With the above solution, when the user places the rowing machine horizontally or vertically, the bracket needs to be lifted or lowered with the balance tube on the ground as the rotation axis. When the device is in the upright state, the support block on the support rod abuts against the ground. At this time, the proximity sensor in the detection hole can detect the approach of the foreign object (i.e., the ground) to the detection hole, and the alarm will not alarm regardless of the opening / closing state of the sealing cover. After the water tank is filled with water, the bracket needs to be switched back to the horizontal state. At this time, the bracket needs to be pushed backward with the body of the balance tube as the rotation axis. During this process, the support block on the support rod first leaves the ground so that the proximity sensor in the detection hole can detect the foreign object (i.e., the ground) moving away from the detection hole. At this time, the controller detects the opening / closing state of the sealing cover through the opening / closing detection unit. If the sealing cover is in the closed state, the alarm does not alarm, enabling the rowing machine to be smoothly switched to the horizontal state. Conversely, if the sealing cover is in the open state, to prevent the water in the water tank from flowing out through the water injection pipe, the alarm alarms to remind the user to cover the sealing cover in time, which is more user-friendly.

[0012] Preferably, pipe sleeves are provided at the ends of the two balance tubes that are away from each other. A cushion block is provided on the side of the pipe sleeve away from the bracket. A pressure detection device is provided on the plane of the cushion block away from the bracket; the pressure detection device includes a first elastic connecting plate fixed to the cushion block, a second elastic connecting plate spaced directly opposite to the side of the first elastic connecting plate away from the cushion block, a deformation interval formed between the first elastic connecting plate and the second elastic connecting plate, and an elastic connecting member integrally connected between the first elastic connecting plate and the second elastic connecting plate to divide the deformation interval into a first interval and a second interval; when the bracket is in the horizontal state, the first interval and the second interval are distributed vertically; when the bracket is in the upright state, the first interval and the second interval are distributed front and back; a hard gasket is attached to the plate surface of the second elastic connecting plate away from the first elastic connecting plate. A first pressure sensor and a second pressure sensor coupled to the controller are respectively provided in the first interval and the second interval, and both the first pressure sensor and the second pressure sensor are provided on the plate surface of the first elastic connecting plate;

[0013] When the proximity sensor detects that an external object moves away from the detection hole, the controller controls the first pressure sensor and the second pressure sensor to detect the pressure from the second elastic connecting plate; when and only when the first pressure sensor detects pressure, the controller controls the alarm to stop alarming;

[0014] When and only when the second pressure sensor detects pressure or neither the first pressure sensor nor the second pressure sensor detects pressure, the controller controls the opening and closing detection unit to detect the opening and closing state of the sealing cover; if the opening and closing detection unit detects that the sealing cover is in the open state, the controller controls the alarm to alarm; conversely, if the opening and closing detection unit detects that the sealing cover is in the closed state, the controller controls the alarm to stop alarming.

[0015] With the above solution, when the rowing machine is in the upright state, the body of the balance pipe and the support block on the support rod can support on the ground simultaneously. When the proximity sensor detects that an external object (i.e., the ground) moves away from the detection hole, the first pressure sensor and the second pressure sensor respectively arranged in the first interval and the second interval can judge the movement trend of the balance pipe and the bracket. When and only when the first pressure sensor detects the pressure from the second elastic connecting plate, it indicates that the center of gravity of the bracket still tends to the support rod, and at this time, there is no risk of the water in the water tank flowing out along the water injection pipe. Therefore, regardless of whether the sealing cover is closed or not, the controller always controls the alarm to stop alarming, avoiding false alarms of the alarm caused by slight adjustment of the upright angle of the rowing machine. Conversely, when and only when the second pressure sensor detects pressure or neither the first pressure sensor nor the second pressure sensor detects pressure, it indicates that the center of gravity of the bracket has escaped from the control range of the support rod, and at this time, there is a risk of the water in the water tank flowing out along the water injection pipe. Therefore, the controller first controls the opening and closing detection unit to detect the opening and closing state of the sealing cover. If the opening and closing detection unit detects that the sealing cover is in the open state, the controller controls the alarm to alarm to remind the user to close the sealing cover in time to avoid the water in the water tank from flowing out. Conversely, if the opening and closing detection unit detects that the sealing cover is in the closed state, the controller controls the alarm to stop alarming, further improving the warning accuracy of the alarm.

[0016] Preferably, a first elastic pressing member and a second elastic pressing member are respectively arranged in the first interval and the second interval, and the first elastic pressing member and the second elastic pressing member are both arranged on the plate surface of the second elastic connecting plate and respectively correspond to the first pressure sensor and the second pressure sensor.

[0017] With the above solution, the first elastic pressing member and the second elastic pressing member can respectively make the first pressure sensor and the second pressure sensor more easily detect the pressure from the second elastic connecting plate, further improving the detection sensitivity of the pressure detection device.

[0018] Preferably, the first elastic pressing member and the second elastic pressing member are respectively internally provided with a first air storage cavity and a second air storage cavity.

[0019] With the above solution, the first elastic pressing member and the second elastic pressing member can press the first pressure sensor and the second pressure sensor in the form of an airbag, so that the triggering effect of the pressure sensor is better.

[0020] Preferably, an air duct is connected between the first elastic pressing member and the second elastic pressing member, and both ends of the air duct are respectively communicated with the first air storage cavity and the second air storage cavity.

[0021] With the above solution, when the first elastic pressing member presses and triggers the first pressure sensor, under the extrusion of the second elastic connecting plate, the gas in the first air storage cavity can be conducted to the second air storage cavity of the second elastic pressing member through the air duct, so that the pressure of the first elastic pressing member on the first pressure sensor is reduced, thereby avoiding the increase of the fatigue degree of the first pressure sensor due to long-term pressure and improving the service life of the first pressure sensor. At the same time, the gas filled into the second air storage cavity can make the second elastic pressing member bulge, so that the second elastic pressing member can trigger the second pressure sensor more accurately. On the contrary, when the second elastic pressing member presses and triggers the second pressure sensor, under the extrusion of the second elastic connecting plate, the gas in the second air storage cavity can be conducted to the first air storage cavity of the first elastic pressing member through the air duct, so that the pressure of the second elastic pressing member on the second pressure sensor is reduced, thereby avoiding the increase of the fatigue degree of the second pressure sensor due to long-term pressure and improving the service life of the second pressure sensor. At the same time, the gas filled into the first air storage cavity can make the first elastic pressing member bulge, so that the first elastic pressing member can trigger the first pressure sensor more accurately.

[0022] Preferably, a cross-shaped silica gel valve is arranged in the air duct.

[0023] With the above solution, when the inflation of the first air storage cavity or the second air storage cavity through the air duct is completed, the cross-shaped silica gel valve can automatically close to cut off the air duct and prevent gas from flowing back. When the first elastic pressing member or the second elastic pressing member is squeezed, the gas in the first air storage cavity or the second air storage cavity can break through the cross-shaped silica gel valve to conduct the air duct, so that the gas can be conducted smoothly.

[0024] Preferably, an elastic connecting plate is connected between the opposite edges of the first elastic connecting plate and the second elastic connecting plate, and the plate surface of the elastic connecting plate is bent outward.

[0025] With the above solution, the elastic connecting plate can increase the connection stability between the first elastic connecting plate and the second elastic connecting plate, and at the same time ensure that the first interval and the second interval can deform smoothly.

[0026] Preferably, an external thread is arranged on the outer side of the port of the water injection pipe for installing the sealing cover, and a threaded hole for threaded cooperation with the port of the water injection pipe is arranged on the sealing cover.

[0027] With the above - mentioned solution, the thread fit between the external thread and the threaded hole can not only achieve the quick disassembly and assembly of the sealing cover at the port of the water injection pipe, but also ensure the stability of the sealing cover after installation.

[0028] Preferably, a detection ring is provided on the outer side of the sealing cover. A plurality of magnetic parts are provided on the end face of the detection ring close to the bracket. The opening - closing detection unit is a Hall sensor arranged on the bracket; when the Hall sensor detects the magnetic field generated by the magnetic parts, the opening - closing detection unit determines that the sealing cover is in the closed state; on the contrary, when the Hall sensor does not detect the magnetic field generated by the magnetic parts, the opening - closing detection unit determines that the sealing cover is in the open state.

[0029] With the above - mentioned solution, the cooperation between the magnetic parts and the Hall sensor can effectively judge whether the sealing cover is closed on the port of the water injection pipe.

[0030] Due to the adoption of the above - mentioned technical solutions, the present invention has remarkable technical effects: when the bracket of the rowing machine is placed horizontally, the device can be used normally. When the water tank needs to be filled with water, first place the bracket in an upright state so that the support block and the pipe body of the balance pipe support on the ground at the same time, so that the whole rowing machine is stable in the upright state. At this time, the opening of the water injection pipe originally located at the bottom of the bracket switches to the horizontal state, and the user can insert the water filling pipe into the opening of the water injection pipe and fill the water injection pipe with the help of a water pump and the water filling pipe. The water flows through the water injection pipe and the water distribution pipes on both sides in sequence, and finally evenly divides and flows into the water storage cavities of the two water tanks. The water - connecting pipe arranged between the two water tanks can not only ensure that the water volumes in the two water tanks increase synchronously, but also prevent the water injection from being blocked. After the water tank is filled with water, the sealing cover can be covered again to seal the opening of the water injection pipe. When the water tank needs to be drained, first place the bracket of the rowing machine horizontally, and then directly open the sealing cover, and the water can be directly drained through the opening of the water injection pipe, which is simpler and faster. After draining, seal the opening of the water injection pipe with the sealing cover again. When the bracket of the rowing machine is in the horizontal state, the overhead pipe and the support frame above the balance pipe can create a gap between the bracket and the ground, which is convenient for the user to open and close the sealing cover, making it more user - friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of the rowing machine when placed horizontally in this embodiment;

[0032] Figure 2 is the exploded Figure 1 ;

[0033] Figure 3 is the exploded Figure 2 ;

[0034] Figure 4 is Figure 3 an enlarged schematic diagram of part A shown;

[0035] Figure 5 is Figure 3 an enlarged schematic view of part B shown;

[0036] Figure 6 is the explosion of this embodiment Figure 3 ;

[0037] Figure 7 is a schematic structural view of the rowing machine in this embodiment when it is erected;

[0038] Figure 8 is Figure 2 an enlarged schematic view of part C shown;

[0039] Figure 9 is Figure 2 an enlarged schematic view of part D shown;

[0040] Figure 10 is the system architecture diagram of this embodiment;

[0041] Figure 11 is Figure 3 an enlarged schematic view of part E shown;

[0042] Figure 12 is Figure 3 an enlarged schematic view of part F shown;

[0043] Figure 13 is Figure 7 an enlarged schematic view of part G shown;

[0044] Figure 14 is the structural schematic of this embodiment Figure 1 ;

[0045] Figure 15 is a cross-sectional view of the pressure detection device in this embodiment;

[0046] Figure 16 is a partial cross-sectional view of the air duct in this embodiment.

[0047] The names of the parts referred to by each digital label in the above drawings are as follows: 1. Bracket; 2. Water tank; 3. Inner cover; 4. Outer cover; 5. Water storage cavity; 6. Water injection pipe; 7. Water distribution pipe; 8. Sealing cover; 9. Water connection pipe; 10. Overhead pipe; 11. Balance pipe; 12. Support frame; 13. Support rod; 14. Support bar; 15. Support block; 16. Opening and closing detection unit; 17. Controller; 18. Alarm; 19. Detection hole; 20. Proximity sensor; 21. Pipe sleeve; 22. Spacer; 23. Pressure detection device; 24. First elastic connection plate; 25. Second elastic connection plate; 26. Deformation interval; 27. First interval; 28. Second interval; 29. Elastic connection member; 30. Hard gasket; 31. First pressure sensor; 32. Second pressure sensor; 33. First elastic pressing member; 34. Second elastic pressing member; 35. First air storage cavity; 36. Second air storage cavity; 37. Air guide pipe; 38. Cross-shaped silicone valve; 39. Elastic connection plate; 40. External thread; 41. Thread hole; 42. Detection ring; 43. Magnetic member; 45. Screw assembly; 46. Blade; 47. Rewinding scroll spring box; 48. Driving pulley; 49. Driven pulley; 50. Transmission belt; 51. Magnetically controlled flywheel; 52. Webbing; 53. Handle; 54. Housing; 55. Avoidance hole; 56. Detection hole. Detailed implementation mode

[0048] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0049] As Figures 1 to 4 shown, a rowing machine disclosed in this embodiment includes a horizontally placed bracket 1 and water tanks 2 located at one end of the bracket 1 and disposed on both sides of the bracket 1. When the bracket 1 is in a horizontally placed state, the water tanks 2 are mounted above the bracket 1. The water tank 2 includes an inner cover 3 fixed to the side of the bracket 1 and an outer cover 4 hermetically covering the outside of the inner cover 3. The outer cover 4 is recessed away from the inner cover 3 to form a water storage cavity 5. A screw assembly 45 is provided above the bracket 1. The two ends of the screw assembly 45 are respectively rotatably passed through the inner covers 3 on both sides, and a blade 46 is connected to the part of the screw assembly 45 passing through the inner cover 3. The blade 46 cooperates with the liquid in the water storage cavity 5 to simulate the water damping of rowing motion. A rewinding scroll spring box 47, a driving pulley 48, a driven pulley 49, a transmission belt 50, and a magnetically controlled flywheel 51 are also provided above the bracket 1 and between the two water tanks 2. The screw assembly 45 is disposed on the driven pulley 49. The rewinding scroll spring box 47 is pulled by an external webbing 52, and a handle 53 is provided on the webbing 52 to simulate the hand movement of rowing motion. When the rewinding scroll spring box 47 performs a reciprocating motion, it can drive the transmission belt 50 to run, so as to drive the screw assembly 45 and the blade 46 to perform a rotational motion, and at the same time drive the magnetically controlled flywheel 51 to move. At this time, two methods can be used to adjust the damping of the rowing machine:

[0050] Method 1: Adjust the resistance value by adjusting the distance between the magnet and the flywheel inside the magnetic control flywheel 51 through a program.

[0051] Method 2: Control the water resistance by the water injection volume in the water tank 2.

[0052] The above double damping adjustment method not only has a reasonable structure, but also has a wider adjustable range, and can better meet the exercise needs of users.

[0053] As Figure 5 and Figure 6 shown, in order to improve the convenience of changing water in the water tank 2, a water injection pipe 6 vertically penetrating through the bracket 1 and located between the two inner covers 3 is provided. The end of the water injection pipe 6 close to the water tank 2 extends to both sides with water distribution pipes 7. The two water distribution pipes 7 are respectively connected to the two inner covers 3 to respectively communicate with the two water storage cavities 5. The port of the water injection pipe 6 far from the water tank 2 is located on the side of the bracket 1 far from the water tank 2 and is provided with a sealing cover 8. Specifically, an external thread 40 is provided on the outside of the port of the water injection pipe 6 for installing the sealing cover 8, and a threaded hole 41 for threaded cooperation with the port of the water injection pipe 6 is opened on the sealing cover 8. A sealing gasket (not shown) is installed at the bottom of the threaded hole 41. When the sealing cover 8 is screwed onto the end of the water injection pipe 6, the sealing gasket (not shown) can press the port of the water injection pipe 6 to improve the sealing performance. A water communication pipe 9 is provided between the two inner covers 3 and on the side far from the water injection pipe 6. The two ends of the water communication pipe 9 are respectively connected to the two inner covers 3 to respectively communicate with the two water storage cavities 5, so that the water levels in the two water tanks 2 can rise and fall synchronously, and at the same time prevent the water filling process from being blocked. The end of the bracket 1 close to the water tank 2 extends in a direction away from the water tank 2 with an overhead pipe 10. The end of the overhead pipe 10 far from the bracket 1 extends vertically to the left and right sides with balance pipes 11, and a support frame 12 is provided below the end of the bracket 1 far from the water tank 2. When the rowing machine is in a horizontal state, the balance pipes 11 and the support frame 12 on the overhead pipe 10 can keep a distance between the bracket 1 and the ground, which is convenient for users to disassemble and assemble the sealing cover 8. A support rod 13 located between the two inner covers 3 extends at a position of the bracket 1 close to the water tank 2. A support rod 14 extends on the side of the rod body of the support rod 13 close to the balance pipe 11, and a support block 15 is provided at the end of the support rod 14 far from the support rod 13. As Figure 7 shown, when the bracket 1 is in an upright state, the support block 15 and the pipe body of the balance pipe 11 simultaneously support on the ground and the bracket 1 is inclined towards the support block 15, so that the rowing machine can be kept in an upright state.

[0054] As Figure 8 shown, in order to increase the protection and aesthetics, a housing 54 for simultaneously wrapping the two water tanks 2 is installed on the bracket 1, and an avoidance hole 55 for the water injection pipe 6 to pass through is opened below the housing 54. The housing 54 is spliced by left and right parts, which belongs to the well-known common sense in the art and will not be elaborated here.

[0055] As Figure 9 、 Figure 10 and Figure 11 shown, in order to remind the user to cover the sealing cap 8 when the rowing machine is laid down, an opening / closing detection unit 16 for detecting whether the sealing cap 8 is closed to output an opening / closing detection signal is provided on one side of the bracket 1 away from the water tank 2. Specifically, a detection ring 42 is provided around the outer side of the sealing cap 8, and a plurality of magnetic members 43 are provided around the end face of the detection ring 42 close to the bracket 1. The magnetic members 43 are preferably magnets. The opening / closing detection unit 16 is a Hall sensor provided on the bracket 1, and a detection hole 56 for the Hall sensor to detect signals is opened below the housing 54. In this embodiment, when the sealing cap 8 covers the port of the water injection pipe 6, the Hall sensor can detect the magnetic field generated by the magnetic member 43, so that the opening / closing detection unit 16 determines that the sealing cap 8 is in the closed state. On the contrary, when the sealing cap 8 is separated from the water injection pipe 6, the Hall sensor cannot detect the magnetic field generated by the magnetic member 43, so that the opening / closing detection unit 16 determines that the sealing cap 8 is in the open state. A controller 17 for receiving the opening / closing detection signal is coupled to the opening / closing detection unit 16. The controller 17 is preferably a single-chip microcomputer. An alarm 18 is coupled to the controller 17. The alarm 18 is preferably a speaker. A detection hole 19 is opened on one side of the support block 15 away from the support rod 14, and a photoelectric proximity sensor 20 for detecting whether there is an external object approaching the support block 15 to output a corresponding proximity signal to the controller 17 is installed in the detection hole 19.

[0056] In this embodiment, when the bracket 1 is in the upright state, if the proximity sensor 20 detects that an external object approaches the detection hole 19, it means that the support block 15 on the support rod 14 abuts against the ground, that is, the rowing machine is stable in the upright state. At this time, the liquid in the water tank 2 has no risk of flowing out along the water injection pipe 6, so the controller 17 controls the alarm 18 to stop alarming.

[0057] If the proximity sensor 20 detects that an external object moves away from the detection hole 19, it means that the support block 15 on the support rod 14 has moved away from the ground, that is, the rowing machine has a tendency to fall backward. At this time, the liquid in the water tank 2 has a risk of flowing out through the water injection pipe 6, so the controller 17 controls the opening / closing detection unit 16 to detect the opening / closing state of the sealing cap 8. If the opening / closing detection unit 16 detects that the sealing cap 8 is in the open state, the controller 17 controls the alarm 18 to alarm to remind the user to cover the sealing cap 8. On the contrary, if the opening / closing detection unit 16 detects that the sealing cap 8 is in the closed state, the controller 17 controls the alarm 18 to stop alarming.

[0058] As Figure 12As shown in the figure, in order to improve the detection accuracy of the above functions, pipe sleeves 21 are provided at the ends of the two balance pipes 11 that are far away from each other. A rigid cushion block 22 is provided on the side of the pipe sleeve 21 away from the bracket 1, and a pressure detection device 23 is provided on the plane of the cushion block 22 away from the bracket 1. Specifically, the pressure detection device 23 includes a first elastic connection plate 24 fixed to the cushion block 22, a second elastic connection plate 25 spaced opposite to the side of the first elastic connection plate 24 away from the cushion block 22, a deformation interval 26 formed between the first elastic connection plate 24 and the second elastic connection plate 25, and an elastic connection member 29 integrally connected between the first elastic connection plate 24 and the second elastic connection plate 25 to divide the deformation interval 26 into a first interval 27 and a second interval 28. In order to increase the connection stability between the first elastic connection plate 24 and the second elastic connection plate 25, an elastic connection plate 39 is connected between the opposite edges of the first elastic connection plate 24 and the second elastic connection plate 25, and the plate surface of the elastic connection plate 39 is bent outward. Among them, the first elastic connection plate 24, the second elastic connection plate 25, the elastic connection member 29 and the elastic connection plate 39 are all made of rubber, so they have better elasticity. When the bracket 1 is in a horizontal state, the first interval 27 and the second interval 28 are distributed up and down. Correspondingly, as Figure 13 shown, when the bracket 1 is in an upright state, the first interval 27 and the second interval 28 are distributed front and back. A rigid gasket 30 is fixedly attached to the plate surface of the second elastic connection plate 25 away from the first elastic connection plate 24 to improve the bending resistance of the second elastic connection plate 25. A first pressure sensor 31 and a second pressure sensor 32 coupled to the controller 17 are respectively provided in the first interval 27 and the second interval 28. The first pressure sensor 31 and the second pressure sensor 32 are both preferably pressure strain gauges, and are all provided on the plate surface of the first elastic connection plate 24.

[0059] As Figure 14 and Figure 15 shown, in order to make the first pressure sensor 31 and the second pressure sensor 32 easier to trigger, a first elastic pressing member 33 and a second elastic pressing member 34 are respectively provided in the first interval 27 and the second interval 28. The first elastic pressing member 33 and the second elastic pressing member 34 are both made of rubber and are integrally connected to the plate surface of the second elastic connection plate 25, and respectively correspond to the first pressure sensor 31 and the second pressure sensor 32. The first elastic pressing member 33 and the second elastic pressing member 34 respectively have a first air storage cavity 35 and a second air storage cavity 36 inside, so that the first elastic pressing member 33 and the second elastic pressing member 34 are in the form of air bags.

[0060] As Figure 14 and Figure 16As shown in the figure, in order to reduce the fatigue of the first pressure sensor 31 and the second pressure sensor 32, an air duct 37 is connected between the first elastic pressing member 33 and the second elastic pressing member 34. The two ends of the air duct 37 are respectively communicated with the first air storage cavity 35 and the second air storage cavity 36. The sum of the gas volumes in the first air storage cavity 35, the second air storage cavity 36 and the air duct 37 is slightly larger than the single volume of the first air storage cavity 35 or the second air storage cavity 36, so that after one of the elastic pressing members is pressed, the gas in the corresponding air storage cavity can be conducted through the air duct 37 to the air storage cavity of the other elastic pressing member, so that the other elastic pressing member can be fully inflated, facilitating the triggering of the corresponding pressure sensor. A cross-shaped silica gel valve 38 is arranged in the air duct 37 to cut off or conduct the air duct 37.

[0061] The specific usage process is as follows:

[0062] When the water tank 2 of the rowing machine needs to be filled with water, first use the balance pipe 11 lying horizontally on the ground as the support rotating shaft, and lift the bracket 1 upward until the support block 15 on the support rod 14 abuts against the ground. Under the support of the balance pipe 11 and the support block 15, the rowing machine can be stabilized in the vertical state. At the same time, the cushion block 22 on the balance pipe 11 and the pressure detection device 23 on the cushion block 22 can press against the ground. At this time, the proximity sensor 20 on the support block 15 can detect that an external object (i.e., the ground) approaches the detection hole 19, and no matter whether the sealing cover 8 is in the closed state or not, the alarm 18 will not give an alarm. In this state, the water injection pipe 6 originally located at the bottom of the bracket 1 is transferred to the horizontal state, which is convenient for the user to unscrew the sealing cover 8 and add water to the water injection pipe 6 by means of a water adding pipe (not shown) and a water pump (not shown). Among them, the outer diameter of the water adding pipe (not shown) should be smaller than the inner diameter of the water injection pipe 6, so that the water adding pipe (not shown) inserted into the water injection pipe 6 can generate a ventilation gap with the inner wall of the water injection pipe 6, thus facilitating the injection of water flow. During the water injection process, the water flow passes through the water injection pipe 6 and the water distribution pipes 7 on both sides in sequence, and finally is evenly distributed into the water storage cavities 5 of the two water tanks 2. After the water tank 2 is filled with water, the sealing cover 8 can be covered again to seal the opening of the water injection pipe 6 and prevent water leakage.

[0063] When the user is laying down the rowing machine, if the user only slightly adjusts the standing angle of the rowing machine and still keeps the rowing machine in the vertical state, the liquid in the water tank 2 will not leak out through the water injection pipe 6. At this time, the inclination of the bracket 1 still biases towards the support rod 14, and in the pressure detection device 23, since the force application point is on the front side of the deformation interval 26, only the first interval 27 is compressed. Correspondingly, only the first pressure sensor 31 is pressed by the first elastic pressing member 33 and triggered. At this time, no matter whether the sealing cover 8 is in the closed state or not, the controller 17 controls the alarm 18 to stop alarming to avoid false alarms.

[0064] When the rowing machine is tilted backward at a large angle, the proximity sensor 20 detects that the foreign object (i.e., the ground) is away from the detection hole 19, that is, the support block 15 on the support rod 14 is off the ground. As the rowing machine bracket 1 continues to tilt backward, the support force applied by the ground to the pressure detection device 23 is transferred from the front side to the rear side, so that the second interval 28 is compressed. At this time, the second elastic pressing member 34 on the second elastic connecting plate 25 presses and triggers the second pressure sensor 32. In this state, the controller 17 controls the opening and closing detection unit 16 to detect the opening and closing state of the sealing cover 8. If the opening and closing detection unit 16 detects that the sealing cover 8 is in the open state, the controller 17 controls the alarm 18 to sound an alarm to remind the user to cover the sealing cover 8 in time to avoid water leakage in the water injection pipe 6. At the same time, the alarm state of the alarm 18 can be self-locking, until the opening and closing detection unit 16 detects that the sealing cover 8 covers the water outlet of the water injection pipe 6, the controller 17 will unlock the alarm state to stop the alarm 18. On the contrary, if the opening and closing detection unit 16 detects that the sealing cover 8 is in the closed state, the controller 17 controls the alarm 18 to stop the alarm.

[0065] When the rowing machine is completely laid down, the first pressure sensor 31 and the second pressure sensor 32 in the pressure detection device 23 cannot detect pressure, and the controller 17 still controls the opening and closing detection unit 16 to detect the opening and closing state of the sealing cover 8. If the opening and closing detection unit 16 detects that the sealing cover 8 is in an open state, the controller 17 controls the alarm 18 to sound an alarm. On the contrary, if the opening and closing detection unit 16 detects that the sealing cover 8 is in a closed state, the controller 17 controls the alarm 18 to stop sounding an alarm. The above operation process can be implemented with the help of the built-in program of the controller 17, which is common knowledge in the field and will not be described in detail here.

[0066] In the above process, when the first elastic pressing member 33 presses and triggers the first pressure sensor 31, under the extrusion of the second elastic connecting plate 25, the gas in the first air storage cavity 35 can push open the cross-shaped silica gel valve 38 and be conducted through the air guide pipe 37 into the second air storage cavity 36 of the second elastic pressing member 34, so as to reduce the pressure of the first elastic pressing member 33 on the first pressure sensor 31, thereby avoiding the increase in fatigue degree of the first pressure sensor 31 caused by long-term compression, and improving the service life of the first pressure sensor 31. In this state, since the second elastic pressing member 34 is not pressed, when the inflation of the second air storage cavity 36 is completed, the cross-shaped silica gel valve 38 will automatically close to cut off the air guide pipe 37 and prevent gas from flowing back. At the same time, the gas filled into the second air storage cavity 36 can make the second elastic pressing member 34 bulge, so that the second elastic pressing member 34 is ready to trigger the second pressure sensor 32. On the contrary, when the second elastic pressing member 34 presses and triggers the second pressure sensor 32, under the extrusion of the second elastic connecting plate 25, the gas in the second air storage cavity 36 can push open the cross-shaped silica gel valve 38 and be conducted through the air guide pipe 37 into the first air storage cavity 35 of the first elastic pressing member 33, so as to reduce the pressure of the second elastic pressing member 34 on the second pressure sensor 32, thereby avoiding the increase in fatigue degree of the second pressure sensor 32 caused by long-term compression, and improving the service life of the second pressure sensor 32. In this state, since the first elastic pressing member 33 is not pressed, when the inflation of the first air storage cavity 35 is completed, the cross-shaped silica gel valve 38 will automatically close to cut off the air guide pipe 37 and prevent gas from flowing back. At the same time, the gas filled into the first air storage cavity 35 can make the first elastic pressing member 33 bulge, so that the first elastic pressing member 33 is ready to trigger the first pressure sensor 31.

[0067] When the water tank 2 needs to drain water, first place the rowing machine in a horizontal state, then directly open the sealing cover 8, and the water can be directly drained through the opening of the water injection pipe 6, which is more simple and fast. After the drainage is completed, just use the sealing cover 8 to seal the opening of the water injection pipe 6 again.

Claims

1. A rowing machine, comprising a horizontally placed bracket (1) and water tanks (2) located at one end of the bracket (1) and arranged on both sides of the bracket (1). The water tank (2) includes an inner cover (3) fixed to the side of the bracket (1) and an outer cover (4) hermetically covering the outside of the inner cover (3). The outer cover (4) is recessed away from the inner cover (3) to form a water storage cavity (5). It is characterized in that: A water injection pipe (6) vertically penetrating through the bracket (1) and located between the two inner covers (3) is provided on the bracket (1). The end of the water injection pipe (6) close to the water tank (2) extends with water distribution pipes (7) on both sides. The two water distribution pipes (7) are respectively connected to the two inner covers (3) to respectively communicate with the two water storage cavities (5). The port of the water injection pipe (6) far from the water tank (2) is located on the side of the bracket (1) far from the water tank (2) and is provided with a sealing cover (8). A water through pipe (9) is arranged between the two inner covers (3) and on the side far from the water injection pipe (6). The two ends of the water through pipe (9) are respectively connected to the two inner covers (3) to respectively communicate with the two water storage cavities (5); The end of the bracket (1) close to the water tank (2) extends with an overhead pipe (10) in the direction away from the water tank (2). The end of the overhead pipe (10) far from the bracket (1) vertically extends with balance pipes (11) on both sides. A support frame (12) is arranged below the end of the bracket (1) far from the water tank (2); A support rod (13) located between the two inner covers (3) extends at a position of the bracket (1) close to the water tank (2). A support bar (14) extends on the side of the rod body of the support rod (13) close to the balance pipe (11). A support block (15) is arranged at the end of the support bar (14) far from the support rod (13); When the bracket (1) is in an upright state, the support block (15) and the pipe body of the balance pipe (11) simultaneously support on the ground and the bracket (1) is inclined towards the support block (15). An opening and closing detection unit (16) for detecting whether the sealing cover (8) is closed to output an opening and closing detection signal is arranged on the side of the bracket (1) far from the water tank (2). A controller (17) for receiving the opening and closing detection signal is coupled to the opening and closing detection unit (16). An alarm (18) is coupled to the controller (17); A detection hole (19) is opened on the side of the support block (15) far from the support bar (14). A proximity sensor (20) for detecting whether there is an external object approaching the support block (15) to output a corresponding proximity signal to the controller (17) is installed in the detection hole (19). When the bracket (1) is in an upright state, if the proximity sensor (20) detects that an external object approaches the detection hole (19), the controller (17) controls the alarm (18) to stop alarming. If the proximity sensor (20) detects that an external object moves away from the detection hole (19), the controller (17) controls the opening and closing detection unit (16) to detect the opening and closing state of the sealing cover (8); If the opening and closing detection unit (16) detects that the sealing cover (8) is in an open state, the controller (17) controls the alarm (18) to alarm; On the contrary, if the opening and closing detection unit (16) detects that the sealing cover (8) is in a closed state, the controller (17) controls the alarm (18) to stop alarming.

2. The rowing machine according to claim 1, characterized in that: Both ends of the two balance pipes (11) that are far away from each other are provided with pipe sleeves (21). A cushion block (22) is provided on the side of the pipe sleeve (21) away from the bracket (1). A pressure detection device (23) is provided on the plane of the cushion block (22) away from the bracket (1). The pressure detection device (23) includes a first elastic connecting plate (24) fixed to the cushion block (22), a second elastic connecting plate (25) spaced directly opposite to the side of the first elastic connecting plate (24) away from the cushion block (22), a deformation interval (26) formed between the first elastic connecting plate (24) and the second elastic connecting plate (25), and an elastic connecting member (29) integrally connected between the first elastic connecting plate (24) and the second elastic connecting plate (25) to divide the deformation interval (26) into a first interval (27) and a second interval (28). When the bracket (1) is in a horizontal state, the first interval (27) and the second interval (28) are distributed vertically. When the bracket (1) is in an upright state, the first interval (27) and the second interval (28) are distributed front and back. A hard gasket (30) is attached to the plate surface of the second elastic connecting plate (25) away from the first elastic connecting plate (24). A first pressure sensor (31) and a second pressure sensor (32) coupled to the controller (17) are respectively arranged in the first interval (27) and the second interval (28). Both the first pressure sensor (31) and the second pressure sensor (32) are arranged on the plate surface of the first elastic connecting plate (24). When the proximity sensor (20) detects that an external object is away from the detection hole (19), the controller (17) controls the first pressure sensor (31) and the second pressure sensor (32) to detect the pressure from the second elastic connecting plate (25). When and only when the first pressure sensor (31) detects pressure, the controller (17) controls the alarm (18) to stop alarming. When and only when the second pressure sensor (32) detects pressure or neither the first pressure sensor (31) nor the second pressure sensor (32) detects pressure, the controller (17) controls the opening and closing detection unit (16) to detect the opening and closing state of the sealing cover (8). If the opening and closing detection unit (16) detects that the sealing cover (8) is in an open state, the controller (17) controls the alarm (18) to alarm. On the contrary, if the opening and closing detection unit (16) detects that the sealing cover (8) is in a closed state, the controller (17) controls the alarm (18) to stop alarming.

3. The rowing machine according to claim 2, characterized in that: A first elastic pressing member (33) and a second elastic pressing member (34) are respectively arranged in the first interval (27) and the second interval (28). Both the first elastic pressing member (33) and the second elastic pressing member (34) are arranged on the plate surface of the second elastic connecting plate (25) and respectively correspond to the first pressure sensor (31) and the second pressure sensor (32).

4. The rowing machine according to claim 3, characterized in that: The first elastic pressing member (33) and the second elastic pressing member (34) are respectively internally provided with a first air storage cavity (35) and a second air storage cavity (36).

5. The rowing machine according to claim 4, characterized in that: A gas guide pipe (37) is connected between the first elastic pressing member (33) and the second elastic pressing member (34), and the two ends of the gas guide pipe (37) are respectively communicated with the first air storage cavity (35) and the second air storage cavity (36).

6. The rowing machine according to claim 5, characterized in that: A cross-shaped silica gel valve (38) is arranged in the gas guide pipe (37).

7. The rowing machine according to claim 2, characterized in that: An elastic connecting plate (39) is connected between the opposite edges of the first elastic connecting plate (24) and the second elastic connecting plate (25), and the plate surface of the elastic connecting plate (39) is bent outward.

8. The rowing machine according to any one of claims 1 to 7, characterized in that: The outer side of the port of the water injection pipe (6) for installing the sealing cover (8) is provided with an external thread (40), and a threaded hole (41) for threaded cooperation with the port of the water injection pipe (6) is provided on the sealing cover (8).

9. The rowing machine according to claim 8, characterized in that: A detection ring (42) is annularly arranged on the outer side of the sealing cover (8), a plurality of magnetic members (43) are annularly arranged on the end surface of the detection ring (42) close to the bracket (1), and the opening and closing detection unit (16) is a Hall sensor arranged on the bracket (1); when the Hall sensor detects the magnetic field generated by the magnetic member (43), the opening and closing detection unit (16) determines that the sealing cover (8) is in the closed state; conversely, when the Hall sensor does not detect the magnetic field generated by the magnetic member (43), the opening and closing detection unit (16) determines that the sealing cover (8) is in the open state.

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