Lifting mechanism with stress locking function and exercise equipment

Abstract

The utility model discloses a lifting mechanism with a stress locking function and exercise equipment. The lifting mechanism with the stress locking function comprises a shell, two winding drums are rotationally arranged in the shell, ratchet wheels are fixedly arranged on the two sides of each winding drum respectively, a bearing belt is wound on the winding drums, and a locking unit for limiting rotation of the ratchet wheels when the tensile force borne by the bearing belt exceeds the set tensile force is arranged in the shell. According to the lifting mechanism with the stress locking function and the exercise equipment, the winding drum is driven by the power unit to rotate, the bearing belt wound on the winding drum is wound and unwound, the height of the exercise equipment can be adjusted, the use requirements of exercisers with different heights can be met, after the height of the exercise equipment is adjusted to be in place, the exercise equipment is pulled down with force, and the exercise equipment is locked. The locking unit locks the winding drum, the exercise equipment is locked at the corresponding height, safety is improved, and after exercise, the exercise equipment can be retracted to be close to a suspended ceiling and does not occupy home activity space.

Description

Technical Field

[0001] This utility model relates to the field of sports equipment technology, and more specifically, to a lifting mechanism and exercise equipment with a force-locking function. Background Technology

[0002] As living standards improve, people are increasingly engaging in physical exercise at home. The rings, as a gymnastics exercise, can simultaneously train the muscles of the arms, shoulders, and abdomen, and are gradually being promoted in daily life. The horizontal bar is similar to the rings and can also effectively enhance the strength of the arms, back, and core muscles.

[0003] Patent document CN204798696U discloses a household hanging ring with a protective device. The protective device consists of two sets, each composed of a connecting ring and a wristband. The connecting ring 5 is slidably fitted onto the hanging ring, and the wristband is connected to the connecting ring via a connecting rope. In addition, an electronic balancer is horizontally mounted on the connecting plate, and the surface of the electronic balancer is covered with a transparent plastic protective layer to ensure balanced installation. A buffer spring, 4cm-5cm in length, is installed on the hanging ring rope near the hanging ring to cushion the impact of excessive force. Two inclined reinforcing ribs are installed on the hanging ring rope near the connecting plate for added safety protection. This utility model has a simple structure, ensures the safety of children during training, and has broad market prospects and commercial value.

[0004] Existing home exercise equipment such as hanging rings and bars lacks a lifting mechanism, meaning the height of the equipment cannot be adjusted to suit the needs of exercisers of different heights. Furthermore, the equipment cannot be retracted into the ceiling after use, thus affecting the living space.

[0005] Therefore, it is necessary to propose a lifting mechanism and exercise equipment with force-locking function to solve the problems existing in the prior art. Utility Model Content

[0006] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0007] To solve the above problems, this utility model provides a lifting mechanism with a force-locking function, including a housing, two drums rotatably arranged inside the housing, ratchet wheels fixed on both sides of the drums respectively, a load-bearing belt wound on the drums, and a locking unit inside the housing that restricts the rotation of the ratchet wheels when the tension on the load-bearing belt exceeds a set tension.

[0008] Preferably, the locking unit includes locking plates, two locking plates are fixedly disposed at both ends of the connecting plate, the locking plates are disposed above the ratchet, one end of the locking plate has a connecting hole, the locking plate is rotatably disposed on the rotating shaft through the connecting hole, and the other end of the locking plate is rotatably disposed on the roller.

[0009] Preferably, the rotating shaft is fixedly mounted on the rear wall of the housing, and a torsion spring is sleeved on the rotating shaft. One end of the torsion spring contacts the lower end face of the connecting plate, and the other end of the torsion spring is located at the lower part of the stop rod and contacts the stop rod.

[0010] Preferably, a driven gear is fixedly mounted on the outer side of the ratchet, and the driven gear is connected to the power unit for transmission.

[0011] Preferably, the power unit includes a gear shaft fixedly mounted on the rear wall of the housing, a drive gear rotatably mounted on the gear shaft, and the drive gear meshing with the driven gear.

[0012] Preferably, a dual-axis motor is fixedly mounted on the bottom surface of the housing, and worm gears are fixedly mounted on the two power output shafts of the dual-axis motor, with a worm wheel rotatably mounted on the gear shaft. The worm wheel meshes with the worm gear, and the worm wheel is fixedly connected to the drive gear.

[0013] Preferably, the two worms have opposite directions of rotation.

[0014] Preferably, the power unit includes a drive motor fixedly mounted on the front wall of the housing, the power output shaft of the drive motor passing through the front wall of the housing and entering the housing, and a drive gear is fixedly mounted thereon, the drive gear meshing with a driven gear on one of the two drums;

[0015] An intermediate gear is rotatably mounted on the rear wall of the housing, and the intermediate gear is engaged with the driving gear and the driven gear on another drum.

[0016] This utility model also provides an exercise device, including a lifting mechanism with force-locking function and a hanging ring as described in the aforementioned technical solution, with the hanging ring fixedly installed at the end of the load-bearing belt.

[0017] This utility model also provides an exercise device, including a lifting mechanism and a suspension rod with a force-locking function as described in the aforementioned technical solution, wherein the ends of two load-bearing belts are fixedly connected to the suspension rod near both ends.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] The lifting mechanism and exercise equipment with force-locking function described in this utility model use a power unit to drive the drum to rotate, thereby adjusting the height of the exercise equipment by winding and unwinding the load-bearing belt wound on the drum. This allows it to meet the needs of exercisers of different heights. After the exercise equipment is adjusted to the correct height, pulling down the exercise equipment will lock the drum with the locking unit, thus locking the exercise equipment at the corresponding height and improving safety. After exercise, the exercise equipment can be retracted near the ceiling, without taking up living space.

[0020] The lifting mechanism and exercise equipment with force-locking function described in this utility model will be partly apparent from the following description, and partly understood by those skilled in the art through research and practice of this utility model. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a structural schematic diagram of the lifting mechanism with force-locking function disclosed in this utility model;

[0023] Figure 2 This is an exploded structural diagram of the lifting mechanism with force-locking function disclosed in this utility model.

[0024] Figure 3 This is a schematic diagram of the locking unit disclosed in this utility model;

[0025] Figure 4 This is a schematic diagram of the power unit disclosed in this utility model;

[0026] Figure 5 This is a structural schematic diagram of a lifting mechanism with a force-locking function for another power unit disclosed in this utility model;

[0027] Figure 6 This is a schematic diagram of the locking principle of the locking unit disclosed in this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the boom device disclosed in this utility model;

[0029] Figure 8 This is a structural schematic diagram of another lifting mechanism with a force-locking function disclosed in this utility model;

[0030] Figure 9 for Figure 7 Another perspective illustration;

[0031] Figure 10 This is a schematic diagram of the locking plate and ratchet engagement structure disclosed in this utility model;

[0032] Figure 11 This is a schematic diagram of the locking principle of the locking plate disclosed in this utility model;

[0033] Figure 12 This is a structural schematic diagram of another lifting mechanism with a force-locking function disclosed in this utility model;

[0034] Figure 13 for Figure 12 A schematic diagram of the decomposition process;

[0035] Figure 14 This is a schematic diagram of the connecting plate disclosed in this utility model;

[0036] Figure 15 This is a schematic diagram of the slider disclosed in this utility model;

[0037] Figure 16 This is a schematic diagram of the ratchet locking principle disclosed in this utility model;

[0038] Figure 17 This is a schematic diagram of another locking unit disclosed in this utility model;

[0039] Figure 18 for Figure 17 A schematic diagram of the decomposed structure;

[0040] Figure 19 for Figure 17 A cross-sectional view of the structure when unlocked;

[0041] Figure 20 for Figure 17 A cross-sectional view of the structure when locked;

[0042] Figure 21 This is a schematic diagram of the transmission plate disclosed in this utility model. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0044] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0045] like Figures 1-7As shown, a lifting mechanism with a force-locking function includes a housing 1, two drums 2 rotatably arranged inside the housing 1, ratchet 3 fixedly arranged on both sides of the drums 2, a load-bearing belt 4 wound on the drums 2, and a locking unit that restricts the rotation of the ratchet 3 when the tension on the load-bearing belt 4 exceeds a set tension is provided inside the housing 1.

[0046] Furthermore, the locking unit includes locking plates 5, with two locking plates 5 fixedly disposed at both ends of the connecting plate 6. The locking plates 5 are disposed above the ratchet 3. A connecting hole 7 is opened at one end of the locking plate 5, and the locking plate 5 is rotatably disposed on the rotating shaft 8 through the connecting hole 7. A roller 9 is rotatably disposed at the other end of the locking plate 5.

[0047] Furthermore, the rotating shaft 8 is fixedly mounted on the rear wall of the housing 1, and a torsion spring 10 is sleeved on the rotating shaft 8. One end of the torsion spring 10 contacts the lower end face of the connecting plate 6, and the other end of the torsion spring 10 is located at the lower part of the stop rod 11 and contacts the stop rod 11.

[0048] Furthermore, a driven gear 12 is fixedly installed on the outer side of the ratchet 3, and the driven gear 12 is connected to the power unit for transmission.

[0049] Furthermore, the power unit includes a gear shaft 13 fixedly mounted on the rear wall of the housing 1, a drive gear 14 rotatably mounted on the gear shaft 13, and the drive gear 14 meshing with the driven gear 12.

[0050] Furthermore, a dual-axis motor 15 is fixedly installed on the bottom surface of the housing 1. Worms 16 are fixedly installed on the two power output shafts of the dual-axis motor 15 respectively. A worm wheel 17 is rotatably installed on the gear shaft 13. The worm wheel 17 is meshed with the worm 16 and is fixedly connected to the drive gear 14.

[0051] Furthermore, the two worm gears 16 rotate in opposite directions.

[0052] Furthermore, the power unit includes a drive motor 18 fixedly mounted on the front wall of the housing 1. The power output shaft of the drive motor 18 passes through the front wall of the housing 1 and enters the housing 1, where a drive gear 19 is fixedly mounted. The drive gear 19 meshes with a driven gear 12 on one of the two drums 2.

[0053] An intermediate gear 20 is rotatably mounted on the rear wall of the housing 1. The intermediate gear 20 is engaged with the driving gear 19 and the driven gear 12 on another drum 2.

[0054] An exercise device includes a lifting mechanism with a force-locking function and a hanging ring 100 as described in the aforementioned technical solution. The hanging ring 100 is fixedly installed at the end of the load-bearing belt 4.

[0055] An exercise device includes a lifting mechanism with a force-locking function and a hanging rod 102 as described in the aforementioned technical solution, with the ends of two load-bearing belts 4 respectively fixedly connected to the hanging rod 102 near both ends.

[0056] The working principle of the above technical solution:

[0057] To accommodate people of different heights, an adjustable lifting mechanism with a weighted belt is installed. The weighted belt is raised and lowered by a motor. Although the motor has a self-locking function, it may lose this function when the weighted belt is subjected to excessive tension, potentially causing injury to the exerciser. Therefore, a locking unit is installed on the lifting mechanism. When the weighted belt is subjected to tension exceeding the set limit, the locking unit restricts the rotation of the ratchet 3 and locks the position of the exercise equipment. When the exercise equipment is not subjected to tension or the tension is small and does not exceed the set limit, the ratchet 3 is not locked, and the power unit can drive the drum 2 to rotate to adjust the position of the exercise equipment.

[0058] The exercise equipment can be a hanging ring or a hanging rod. Taking the hanging ring 100 as an example, the lifting and locking of the exercise equipment is explained. The axes of the two drums 2 inside the housing 1 are arranged in parallel. The drum 2 includes a drum shaft and circular baffles set on the two end faces of the drum shaft. The function of the circular baffles is to block the load-bearing belt 4 wound on the drum shaft and prevent the load-bearing belt 4 from slipping off. The ratchet 3 is fixedly set on the outside of the circular baffles and is coaxial with the drum 2.

[0059] The locking unit includes locking plates 24, two locking plates 24 are fixedly mounted at both ends of the connecting plate 6, and the locking plates 24 are positioned above the ratchet 3. A connecting hole 7 is formed at one end of each locking plate 24, and the locking plates 24 are rotatably mounted on the rotating shaft 8 through the connecting hole 7. The roller 9 is rotatably mounted between the two locking plates 24. Figure 6 As shown, the free end of the load-bearing belt 4 wound on the drum 2 passes over the roller 9 and the fixed pulley 101 and hangs downward with a lifting ring 100. The position of the roller 9 is higher than the line connecting the drum 2 and the fixed pulley 101. The connection method between the lifting ring 100 and the load-bearing belt 4 is existing technology and will not be described in detail here.

[0060] The torsion spring 10 supports the lower end face of the connecting plate 6. When the lifting ring 100 is not pulled down by the user and the tension does not exceed the set tension, when the power unit drives the drum 2 to rotate, the torsion spring 10 provides upward support to the locking plate 5 through the connecting plate 6, so that the locking plate 24 and the ratchet 3 maintain a certain distance. At this time, the length of the load-bearing belt can be adjusted, thereby adjusting the distance between the lifting ring 100 and the ceiling. The lifting ring 100 can be lowered for exercisers to use, or the lifting ring 100 can be retracted and placed near the ceiling or stored in the ceiling after exercise. When the lifting ring 100 is not in use, it does not occupy the space under the ceiling.

[0061] The set tension is determined based on the elastic force of the torsion spring 10, the weight of the lifting ring, and the weight of the load-bearing belt. The set tension should be greater than the sum of the weights of the lifting ring and the vertical section of the load-bearing belt.

[0062] The load-bearing belt 4 can be made of composite fiber material.

[0063] The stop bar 11 is fixedly installed on the inner wall of the rear side of the housing 1. The stop bar 11 is spaced apart from the rotating shaft 8. The two locking units are symmetrically arranged above the two drums 2.

[0064] An exercise device includes a lifting mechanism with a force-locking function and a hanging ring 100 as described in the aforementioned technical solution. The hanging ring 100 is fixedly installed at the end of the load-bearing belt 4. When the exerciser wants to exercise, the power unit is first activated, which drives the drum 2 to rotate. The drum 2 releases the load-bearing belt 4, and the hanging ring 100 moves downward under its own weight. After reaching a suitable height, the power unit is turned off and the hanging ring 100 stops. At this time, the exerciser pulls the hanging ring 100 downward. Since the position of the roller 9 is higher than the line connecting the drum 2 and the fixed pulley 101, when the exerciser pulls down the hanging ring 100, the load-bearing belt 4 is pressed down by the roller 9 against the locking plate 5. The teeth at the lower part of the locking plate 5 engage with the teeth of the ratchet 3, restricting the rotation of the ratchet 3, thereby restricting the rotation of the drum 2 and preventing the load-bearing belt 4 from moving further. This stops the hanging ring 100 at a suitable height, making it convenient for the exerciser to exercise. Locking the hanging ring 100 also prevents the exerciser from falling and getting injured.

[0065] This utility model discloses two structures for power units, the first of which is as follows: Figure 3 As shown, a dual-axis motor 15 is installed on the bottom surface of the housing 1. The dual-axis motor is fixed to the bottom surface of the housing by bolts. Worms 16 are fixed on the two power output shafts of the dual-axis motor 15. The worms 16 are meshed with worm wheels 17. When the height of the lifting ring 100 is adjusted, the dual-axis motor 15 starts and drives the drive gear 14 to rotate through the worms 16 and worm wheels 17. This drives the drum 2 to rotate through the driven gear 12, thereby winding and unwinding the load-bearing belt 4. Since the load-bearing belt 4 on both drums 2 is wound from the top of the drum 2, and the rotation directions of the two screws 16 are opposite, the rotation directions of the two upper drums 2 are opposite, thereby achieving the simultaneous winding or unwinding of the load-bearing belt on both drums 2. The power output shaft of the dual-axis motor 15 is parallel to the length direction of the housing 1. The lifting mechanism with the dual-axis motor is called a one-line locking lifting mechanism.

[0066] The second type of power unit includes a drive motor 18 fixedly installed on the outer side of the front wall of the housing 1. The power output shaft of the drive motor 18 passes through the front wall of the housing 1 and enters the housing 1, where a drive gear 19 is fixedly installed. The drive gear 19 meshes with a driven gear 12 on one of the two drums 2. An intermediate gear 20 is rotatably installed on the rear wall of the housing 1. The intermediate gear 20 meshes with the drive gear 19 and the driven gear 12 on the other drum 2 respectively. The rotation of the drive motor 18 drives the two drums 2 to rotate through the drive gear 19 and the intermediate gear 20, thereby winding and unwinding the load-bearing belt. The direction of the power output shaft of the drive motor is perpendicular to the length direction of the housing 1. The lifting mechanism with the drive motor 18 installed on the outer side of the front wall of the housing 1 is called a T-shaped locking lifting mechanism.

[0067] The installation of the intermediate gear 20 is the same as that of the drive gear 14. The intermediate gear shaft can be fixedly installed on the rear wall of the housing 1, and the intermediate gear 20 is rotatably mounted on the intermediate gear shaft.

[0068] An exercise device includes a lifting mechanism with a force-locking function and a suspension rod 102 as described in the aforementioned technical solution. The ends of two load-bearing belts 4 are fixedly connected to the suspension rod 102 near both ends. The connection points of the two load-bearing belts 4 to the suspension rod 102 are symmetrically arranged with the midpoint of the suspension rod 102 as the center, and the suspension rod device can be used as a horizontal bar for exercise. The connection method of the load-bearing belts 4 is the same as that of the ring device, and will not be described again here.

[0069] The beneficial effects of the above technical solution are as follows:

[0070] The lifting mechanism and exercise equipment with force-locking function described in this utility model use a power unit to drive the drum to rotate, thereby adjusting the height of the exercise equipment by winding and unwinding the load-bearing belt wound on the drum. This allows it to meet the needs of exercisers of different heights. After the exercise equipment is adjusted to the correct height, pulling down the exercise equipment will lock the drum with the locking unit, thus locking the exercise equipment at the corresponding height and improving safety. After exercise, the exercise equipment can be retracted near the ceiling, without taking up living space.

[0071] In one embodiment, such as Figures 8-11As shown, the lifting mechanism with force-locking function includes a support member 21 and a drum 2 rotatably mounted on the lower surface of the support member 21. Two sets of bearing seats are arranged along the length direction of the support member on the lower surface of the support member 21. A dual-output shaft motor 22 is fixedly arranged between the two sets of bearing seats. The two drums 2 are rotatably mounted on the bearing seats through bearings. The drums 2 are connected to the power output shaft 23 for transmission. A ratchet 3 is fixedly arranged on one end face of one of the drums 2. A locking plate 24 is rotatably arranged on the lower side of the drum 2 where the ratchet 3 is located. Two connecting arms 25 are fixedly arranged on one side of the locking plate 24. The angle between the connecting arms 25 and the upper surface of the locking plate 24 is a set angle. A sleeve 26 is rotatably arranged between the two connecting arms 25. A locking tooth 27 is fixedly arranged on the upper surface of the locking plate 24. The length direction of the locking tooth 27 is parallel to the axis direction of the drum 2. The set angle between the connecting arms 25 and the locking plate 24 can be set as needed, and can be set to 120-150 degrees. The locking plate 24 can be made of metal material, such as... Figure 10 As shown, one end of the load-bearing belt 4 wound on the drum 2 is fixedly mounted on the drum 2. The movable end of the load-bearing belt 4 passes around the sleeve 26 and is fixedly connected to the lifting ring 100. When the length of the load-bearing belt 4 needs to be adjusted, the dual output shaft motor 22 can be turned on. The dual output shaft motor 22 drives the lifting ring to move up and down. At this time, due to the light weight of the lifting ring, due to the weight of the locking plate 24 itself, the pressure of the lifting ring 100 on the sleeve 26 cannot cause the sleeve 26 to drive the locking plate 24 to rotate closer to the ratchet 3. When someone pulls the lifting ring from below, the tension on the load-bearing belt 4 also increases. The load-bearing belt 4 squeezes the sleeve 26 to the left. The sleeve 26 drives the locking plate 24 to rotate clockwise. The locking plate 24 moves closer to the ratchet 3. The locking teeth 27 on the locking plate 24 lock the ratchet 3, thereby preventing the drum 2 from rotating and locking the position of the load-bearing belt 4. The person exercising can use the lifting ring for exercise. At this time, the set tension can be set according to the weight of the locking plate 24.

[0072] The axis of rotation of the locking plate 24 is parallel to the axis of the drum 2, and the length direction of the locking tooth 27 is parallel to the axis of the drum 2. After the locking plate 24 approaches the ratchet 3, the locking tooth 27 can better engage with the teeth of the ratchet 3.

[0073] The lifting ring 100 is connected to the drum 2 at both ends of the support member 21, and the support member 21 is fixed in the ceiling. The structure is simple and the cost is low.

[0074] In one embodiment, such as Figures 12-16 As shown, the lifting mechanism with a force-locking function includes a housing 1, a drum 2 rotatably disposed inside the housing 1, and an auxiliary drum 28 disposed parallel to the drum 2.

[0075] A first gear 29 is fixedly mounted on the auxiliary drum 28, and the first gear 29 meshes with a second gear 30 fixedly mounted on the drum 2.

[0076] The first gear 29 and the auxiliary drum 28 are fixedly mounted on the axle 31, and ratchet gears 32 are fixedly mounted on the outer sides of the first gear 29 and the auxiliary drum 28 on the axle 31, respectively.

[0077] Connecting plates 33 are fixedly arranged on the front and rear side walls of the housing 1. Grooves 34 are opened on the opposite sides of the two connecting plates 33. A retaining tooth 35 is fixedly arranged on the lower part of the inner wall of the groove 34. A ratchet 32 ​​is rotatably arranged in the groove 34.

[0078] A groove 36 is provided on the bottom surface of the groove 34, and a slider 37 is slidably arranged in the groove 36. A shaft hole 38 is provided on the slider 37, and a wheel axle 31 is rotatably arranged in the shaft hole 38. An elastic element 39 is provided in the groove 34. The lower end of the elastic element 39 is fixedly connected to the bottom surface of the groove 34, and the upper end of the elastic element 39 is fixedly connected to the bottom surface of the slider 37.

[0079] It also includes a motor 40, which is fixedly mounted on the outer wall of the housing 1. The power output shaft of the motor 40 passes through the side wall of the housing 1 and enters the housing 1, where a drive gear 41 is fixedly mounted. The drive gear 41 meshes with the second gear 30.

[0080] The load-bearing belt 4, wound on the drum 2, hangs downwards after passing over the auxiliary drum 28. The free end of the load-bearing belt 4 is fixedly equipped with a hanging clip 100. Due to the action of the elastic element 39, the slider 37 is pushed upwards. When adjusting the length of the load-bearing belt 4, the downward pulling force of the load-bearing belt 4 cannot compress the elastic element 39 to make the wheel axle 31 move downwards when the motor 40 is winding and releasing the load-bearing belt. When someone pulls the ring, the instantaneous pulling force on the load-bearing belt 4 increases. The load-bearing belt 4 squeezes the elastic element 39 downwards through the auxiliary drum 28 and the wheel axle 31. The auxiliary drum 28 moves downwards as a whole, and the ratchet 32 ​​moves downwards and gets caught on the locking tooth 35. The locking tooth 35 restricts the rotation of the ratchet 32, thereby restricting the rotation of the drum 2 through the auxiliary drum 28 and locking the load-bearing belt 4. The person exercising can exercise under the ring. At this time, the set tension is set according to the elastic force of the elastic element 39.

[0081] The thickness of slider 37 is greater than the depth of groove 36, and the portion of slider 37 that protrudes from groove 36 is used to fix elastic element 39.

[0082] The housing 1 includes a detachably connected top cover 42, which serves to prevent dust and protect the internal components of the housing 1.

[0083] The housing 1 and the support 21 can be installed on the roof inside the ceiling of the house and fixed with bolts. Installing them inside the ceiling makes the interior beautiful and tidy. The lifting mechanism using the auxiliary drum 28 requires two pairs to be used, each connected to two lifting rings 100. The two motors can be set to rotate synchronously.

[0084] The auxiliary drum 28 moves downward under the tension of the load-bearing belt, and the ratchet 3 engages with the locking tooth 35, which provides high locking stability and good safety.

[0085] In one embodiment, such as Figures 17-21 As shown, the locking unit includes a transmission plate 43 and a ratchet ring 44. The transmission plate 43 is rotatably disposed inside the ratchet ring 44. The transmission plate 43 is fixedly connected to the drum 2. At least two columns 45 and baffles 46 are arranged in a circumferential array on the side of the transmission plate 43 facing away from the drum 2. A pawl 47 is rotatably disposed on the column 45. One end of a spring 48 is fixedly connected to the side of the baffle 46 facing the pawl. The other end of the spring 48 is fixedly connected to the pawl.

[0086] Initial position, such as Figure 18 As shown, under the action of the spring tension, there is a certain gap between the pawl 47 and the ratchet ring 44, and the pawl 47 and the ratchet ring 44 will not get stuck. When the upper load-bearing belt of the drum 2 is subjected to a large tension, the instantaneous rotation speed of the drum 2 increases. Under the action of centrifugal force, the end of the pawl 47 away from the column 45 rotates outward against the tension of the spring 48, and the pawl 47 gets stuck on the teeth of the ratchet ring 44 (e.g., Figure 19 As shown), this prevents the drum 2 from rotating and locks the load-bearing belt 4. At this time, the set tension is based on the spring force.

[0087] The transmission plate 43 can be fixed on the driven gear 12, and the ratchet ring 44 can be fixed on the side wall of the housing 1 to cooperate with the transmission plate 43, replacing the locking plate 5 as the locking unit. Alternatively, the ratchet ring 44 can be fixed on the bearing seat of the support member 21, and the transmission plate 43 can be fixed on the drum 2, replacing the locking plate 24 on the support member 21 as the locking unit. The locking unit using the ratchet is responsive and has good locking performance.

[0088] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0089] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0090] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A lifting mechanism with a force-locking function, characterized in that, The utility model provides a load bearing belt winding and unwinding device, including shell (1), two reel (2) are rotationally arranged in shell (1), the both sides of reel (2) are fixedly arranged ratchet (3) respectively, and the load bearing belt (4) is wound on reel (2), and the lock unit that the tension that load bearing belt (4) receives exceeds the tension of setting is arranged in shell (1) and is limited ratchet (3) rotation.

2. The lifting mechanism having a force-locked function according to claim 1, characterized in that, The lock unit includes locking plate (5), two locking plate (5) are fixedly arranged on the both ends of connecting plate (6), locking plate (5) are arranged above ratchet (3), one end of locking plate (5) is provided with connecting hole (7), locking plate (5) are rotationally arranged on the pivot (8) through connecting hole (7), and the other end of locking plate (5) is rotationally arranged roller (9).

3. The lifting mechanism having a force-locked function according to claim 2, characterized in that, The pivot (8) is fixedly arranged on the rear wall of shell (1), the torsional spring (10) is sleeved on the pivot (8), one end of torsional spring (10) is in contact with the lower end surface of connecting plate (6), and the other end of torsional spring (10) is located in the lower part of stop lever (11) and is in contact with stop lever (11).

4. The lifting mechanism having a force-locked function according to claim 3, characterized in that, The outer side of ratchet (3) is fixedly arranged driven gear (12), and driven gear (12) is in transmission connection with power unit.

5. The lifting mechanism having a force-locked function according to claim 4, characterized in that, The power unit includes gear shaft (13) fixedly arranged on the rear wall of shell (1), driving gear (14) is rotationally arranged on gear shaft (13), and driving gear (14) is in meshing arrangement with driven gear (12).

6. The lifting mechanism having a force-locked function according to claim 5, wherein The bottom surface of shell (1) is fixedly arranged double-shaft motor (15), the two power output shafts of double-shaft motor (15) are fixedly arranged worm (16) respectively, worm wheel (17) is rotationally arranged on gear shaft (13), worm wheel (17) is in meshing arrangement with worm (16), and worm wheel (17) is fixedly connected with driving gear (14).

7. The lifting mechanism having a force-locked function according to claim 6, characterized by, The rotation directions of the two worm (16) are opposite.

8. The lifting mechanism having a force-locked function according to claim 4, characterized by, The power unit includes driving motor (18) fixedly arranged on the front wall of shell (1), the power output shaft of driving motor (18) penetrates the front wall of shell (1) and enters shell (1) and is fixedly arranged driving gear (19), and driving gear (19) is in meshing arrangement with driven gear (12) on one reel (2) of two reel (2); The rear wall of shell (1) is rotationally arranged intermediate gear (20), and intermediate gear (20) is in meshing arrangement with driving gear (19) and driven gear (12) on the other reel (2) respectively.

9. An exercise apparatus comprising the lifting mechanism with force-locked function according to any one of claims 1-8 and a suspension ring (100), characterized in that, The lifting ring (100) is fixedly arranged on the terminal of load bearing belt (4).

10. An exercise apparatus comprising the lifting mechanism with force-locked function according to any one of claims 1-8 and a boom (102), characterized in that, The terminals of the two load bearing belts (4) are fixedly connected with the positions close to the both ends of the suspender (102).

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