Multi-motor pulling force fitness machine

Abstract

The present application relates to the technical field of body-building equipment, and discloses a multi-motor pulling force body-building machine, which comprises a resistance source, a winding reel and a pulling rope, the rotating part of the resistance source is coaxially connected with the winding reel, one end of the pulling rope is connected with the winding reel, and the other end of the pulling rope is used for matching the pulling action of a user, the resistance source drives the winding reel to rotate through the rotating part to output torque so that the pulling rope is wound on the winding reel to generate counterweight pulling force; the multi-motor pulling force body-building machine further comprises a first supporting part and a linkage clutch mechanism, the first supporting part is used for limiting the resistance source on an external bearing object, the resistance source is provided in plurality, and the linkage clutch mechanism is used for separating or linkage combining the rotating parts or winding reels of adjacent two resistance sources. The multi-motor pulling force body-building machine can meet the requirement of increasing torque by arranging multiple resistance sources and linkage connecting the winding reels driven by adjacent two resistance sources to drive multiple resistance sources to rotate synchronously, and can reduce the manufacturing cost while ensuring applicability, energy saving and environmental protection.

Description

Technical Field

[0001] This invention relates to the field of fitness equipment technology, and in particular discloses a multi-motor pull fitness machine. Background Technology

[0002] Resistance band machines, a common type of fitness equipment, use a motor as a resistance source to pull resistance bands in opposite directions, thus helping users perform resistance training. Currently, most resistance band machines use an external motor as the resistance source. This type of motor needs to have the characteristics of high torque and low speed to ensure that it can provide sufficient resistance while maintaining stable operation. Achieving high torque and low speed requires rare-earth high-strength magnetic materials, which are expensive to produce and can easily have a negative impact on the environment. Therefore, current resistance band machines suffer from high production costs, over-reliance on rare-earth resources, and environmental pollution. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a multi-motor pull fitness machine to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention provides a multi-motor pull-up fitness machine, comprising a resistance source, a winding reel, and a pull rope. The rotating component of the resistance source is coaxially connected to the winding reel. One end of the pull rope is connected to the winding reel, and the other end of the pull rope is used to cooperate with the user's pulling action. The resistance source outputs torque through the rotating component to drive the winding reel to rotate so that the pull rope is wound on the winding reel. The machine also includes a first support member and a linkage clutch mechanism. The first support member is used to limit the resistance source to an external supporting object. Multiple resistance sources are provided, and the rotating components of two adjacent resistance sources are arranged close to each other. The linkage clutch mechanism is used to separate or link the rotating components or winding reels of two adjacent resistance sources.

[0005] Furthermore, the multi-motor resistance fitness machine is also equipped with a spline sleeve, and a spline shaft is provided on the winding disc or rotating part. The spline sleeve is movably arranged along the central axis of the spline shaft. The spline teeth of the spline sleeve and two adjacent spline shafts are interlocked so that the winding discs of two adjacent resistance sources rotate in linkage. The spline sleeve is only fitted on the winding disc of one resistance source so that the winding discs of two adjacent resistance sources rotate independently. The spline sleeve and the spline shaft are a linkage clutch mechanism.

[0006] Furthermore, the spline shaft and the winding disc are fixedly connected by detachable fasteners; the linkage clutch mechanism also includes a limiting member, which is used to limit the spline sleeve on the spline shaft to prevent the spline sleeve from moving relative to the central axis of the spline shaft.

[0007] Furthermore, the length of the spline groove of the spline sleeve is less than or equal to the length of the spline tooth of any spline shaft that meshes with it.

[0008] Furthermore, the resistance source is an external rotating motor, the rotor of the external rotating motor is used as the rotating component and is rotatably sleeved on the outside of the first support component, the winding spool is hollow inside and sleeved on the outside of the first support component, and the ends of the rotor and / or the winding spool are provided with a first bearing mounting part for installing an external bearing.

[0009] Furthermore, the first support member is provided with locking mechanisms at both ends. The locking mechanism includes a movable seat located at the end of the first support member away from the resistance source and a fixed seat that slides with the movable seat. One end of the fixed seat is used to abut against the bearing surface of the external bearing object. The other end of the fixed seat is provided with an inclined first guide surface. The end of the movable seat near the fixed seat is provided with an inclined second guide surface. The first guide surface and the second guide surface abut against each other. The sum of the angle between the first guide surface and the horizontal plane and the angle between the second guide surface and the horizontal plane is °.

[0010] When the movable seat moves forward relative to the fixed seat, the second guide surface pushes the first guide surface to firmly abut and limit the end of the fixed seat away from the movable seat against the bearing surface of the external object; when the movable seat moves in the opposite direction relative to the fixed seat, the second guide surface moves away from the first guide surface so that the end of the fixed seat away from the movable seat separates from the bearing surface of the external object.

[0011] Furthermore, both ends of the first support member are provided with extension rods that can be extended and retracted, and the movable seat is located at the end of the extension rod away from the first support member.

[0012] Furthermore, a buffer pad is provided at the end of the fixed seat away from the first guide surface. The hardness of the buffer pad is less than that of the fixed seat and the external bearing object, and the surface roughness of the buffer pad is greater than or equal to the surface roughness of the bearing surface of the external object.

[0013] Furthermore, the multi-motor pull fitness machine also includes a suction cup assembly used in conjunction with the first support member. The suction cup assembly includes a support rod connected to both ends of the first support member and a vacuum suction cup disposed at the end of the support rod. The vacuum suction cup is used to adsorb the support surface of external objects to stably limit the position of the first support member.

[0014] Furthermore, the multi-motor resistance fitness machine also includes a reduction mechanism. The output end and input end of the reduction mechanism are respectively fixedly connected to the winding discs of two adjacent resistance sources, so that the rotation speeds of the winding discs of the two adjacent resistance sources are different. The reduction mechanism is a linkage clutch mechanism.

[0015] The beneficial effects of this invention are as follows: By setting up multiple external rotating motors and connecting the rotating parts or winding discs of adjacent external rotating motors through splines, this invention drives two or more motors to rotate synchronously, thereby increasing the required torque. Alternatively, by connecting the rotating parts or winding discs of adjacent external rotating motors through a reduction mechanism, when the tension rope driven by one motor is pulled, the tension rope driven by the other motor is slowed down during the pulling process, thus generating a greater load. This structure can significantly reduce the use of rare earth high-strength magnets in the external rotating motors, thereby reducing the manufacturing cost of the resistance training machine, saving energy and protecting the environment, and significantly expanding the applicability of the resistance training machine. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle;

[0018] Figure 3 This is a schematic diagram of the cross-section of the present invention;

[0019] Figure 4 This is a schematic diagram of the locking mechanism of the present invention;

[0020] Figure 5 This is a schematic diagram of the resistance source and suction cup assembly of the present invention;

[0021] Figure 6 This is a partial exploded structural diagram of the present invention.

[0022] The reference numerals in the figures include:

[0023] 1. Resistance source; 2. Winding reel; 21. First bearing mounting part; 3. Tension rope; 31. Handle; 4. First support member; 5. Splined shaft; 51. Connecting member; 6. Splined sleeve; 7. Locking mechanism; 71. Moving seat; 711. Second guide surface; 72. Fixed seat; 721. First guide surface; 722. Buffer pad; 723. Limiting baffle; 8. Extension rod; 81. Adjusting wheel; 9. Suction cup assembly; 90. Connecting frame; 91. Bearing rod; 92. Vacuum suction cup; 11. Rotor; 12. Protective housing. Detailed Implementation

[0024] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0025] Please see Figures 1 to 6As shown, a multi-motor pull fitness machine of the present invention includes a resistance source 1, a winding reel 2, and a pull rope 3. The rotating part of the resistance source 1 is coaxially connected to the winding reel 2. One end of the pull rope 3 is connected to the winding reel 2, and the other end of the pull rope 3 is used to cooperate with the user's pulling action. The resistance source 1 outputs torque through the rotating part to drive the winding reel 2 to rotate so that the pull rope 3 is wound on the winding reel 2. It also includes a first support member 4 and a linkage clutch mechanism. The first support member 4 is used to limit the resistance source 1 to an external supporting object. There are multiple resistance sources 1. The rotating parts of two adjacent resistance sources 1 are arranged close to each other. The linkage clutch mechanism is used to separate or link the rotating parts or winding reels 2 of two adjacent resistance sources 1.

[0026] In this embodiment, an external motor is used as the resistance source 1. The rotor 11 of the external motor is fixedly connected to the winding reel 2 as a rotating component. One end of the tension rope 3 is fixedly connected to the winding reel 2, and the other end of the tension rope 3 is equipped with a detachable handle 31. When using the tension fitness machine for tension training, the user holds the handle 31 and pulls the tension rope 3. At this time, the external motor will output torque through the rotor 11 to drive the winding reel 2 to rotate, causing the tension rope 3 to wind onto the winding reel 2, thereby generating a counterweight tension. This tension resistance needs to be overcome by the user through muscle strength, thereby achieving the purpose of muscle training. After using a spline shaft 5 and a spline sleeve 6 to coaxially connect the two winding reels 2, the user can generate greater force when pulling the tension rope 3, improving the applicability of the fitness machine.

[0027] Specifically, the multi-motor resistance fitness machine is also equipped with a spline sleeve 6, and a spline shaft 5 is provided on the winding disc 2 or rotating part. The spline sleeve 6 is movably arranged along the central axis of the spline shaft 5. The spline teeth of the spline sleeve 6 and the two adjacent spline shafts 5 are engaged with each other so that the winding discs 2 of the two adjacent resistance sources 1 are linked and rotated together. The spline sleeve 6 is only fitted on the winding disc 2 of one resistance source 1 so that the winding discs 2 of the two adjacent resistance sources 1 are separated and rotated independently. The spline sleeve 6 and the spline shaft 5 are a linkage clutch mechanism.

[0028] Specifically, the splined shaft 5 and the winding reel 2 are fixedly connected by detachable fasteners; the linkage clutch mechanism also includes a limiting member, which is used to limit the splined sleeve 6 on the splined shaft 5 to prevent the splined sleeve 6 from moving relative to the central axis of the splined shaft 5. In this embodiment, the winding reel 2 is a hollow cylinder with an I-shaped longitudinal section. The winding reel 2 has multiple threaded holes on its periphery. The splined shaft 5 is hollow in the middle and its edges protrude outward to form a plate-shaped connecting member 51. The connecting member 51 has multiple through holes that connect to the threaded holes. The splined shaft 5 is threadedly connected to the winding reel 2 via the connecting member 51. In actual manufacturing, a pin hole connection can be selected.

[0029] Specifically, the length of the spline groove of the spline sleeve 6 is less than or equal to the length of the spline teeth of any spline shaft 5 that meshes with it. In actual use, the spline sleeve 6 is slidably mounted on any spline shaft 5. When using a single resistance source 1 for tensile training, this structure allows the spline sleeve 6 to be properly stored without protruding from the spline shaft 5, saving storage space.

[0030] Specifically, the resistance source 1 is an external rotating motor, and the rotor 11 of the external rotating motor is rotatably sleeved on the outside of the first support member 4. The winding reel 2 is hollow inside and sleeved on the outside of the first support member 4. The ends of the rotor 11 and / or the winding reel 2 are provided with a first bearing mounting part 21 for installing an external bearing. In this embodiment, the rotor 11 is annular, the first support member 4 is cylindrical, and the two ends of the rotor 11 are fixedly connected to a protective housing 12 by bolts. The protective housing 12 is rotatably connected to the first support member 4 via a threaded locking ring. The first bearing mounting part 21 of the rotor 11 is located inside the protective housing 12 and is integrally constructed with the protective housing 12. Connecting the first support member 4 and the protective housing 12 by the threaded locking ring has the characteristics of tight connection and convenient disassembly. In actual manufacturing, a flat key and a keyway can be selected to achieve the fixed connection between the two.

[0031] Specifically, the first support member 4 is provided with locking mechanisms 7 at both ends. The locking mechanism 7 includes a movable seat 71 located at the end of the first support member 4 away from the resistance source 1 and a fixed seat 72 that slides with the movable seat 71. One end of the fixed seat 72 is used to abut against the bearing surface of the external bearing object. The other end of the fixed seat 72 is provided with an inclined first guide surface 721. The movable seat 71 is provided with an inclined second guide surface 711 at the end near the fixed seat 72. The first guide surface 721 and the second guide surface 711 abut against each other. The sum of the angle between the first guide surface 721 and the horizontal plane and the angle between the second guide surface 711 and the horizontal plane is 180°.

[0032] When the movable seat 71 moves forward relative to the fixed seat 72, the second guide surface 711 pushes against the first guide surface 721 to firmly abut against and limit the end of the fixed seat 72 away from the movable seat 71 against the bearing surface of the external object; when the movable seat 71 moves in the opposite direction relative to the fixed seat 72, the second guide surface 711 moves away from the first guide surface 721 to separate the end of the fixed seat 72 away from the bearing surface of the external object. In this embodiment, the cross-sections of the movable seat 71 and the fixed seat 72 are approximately trapezoidal, and the trapezoidal movable seat and the trapezoidal fixed seat 72 form a cuboid after being clamped together. The end of the fixed seat 72 away from the movable seat 71 can be used to abut against a wall or door frame, increasing the applicable scenarios. The end of the fixed seat 72 away from the movable seat 71 is provided with multiple blind grooves (not shown in the figure). The array of multiple blind grooves is used to reduce the structural strength of the fixed seat 72, so that the movable seat 71 can push and cause it to deform slightly to abut against the bearing surface of the external object. The blind grooves can also be used for the installation and fixation of the buffer pad 722.

[0033] The fixed seat 72 is provided with two limiting baffles 723 at one end near the movable seat 71 for guiding the movement of the movable seat 71. When it is necessary to lock the first support member 4 to the wall or door frame, the movable seat 71 can be first brought into contact with the fixed seat 72 by the guidance of the limiting baffles 723. Then the movable seat 71 is slid. Since the two guide surfaces are inclined and parallel, this movement will cause the movable seat to generate a force perpendicular to the direction of the guide surfaces. Since the first support member 4 is fixedly connected to the movable seat 71, the first support member uses this force to push the movable seat 71 and the fixed seat 72 towards the wall or door frame. When the user performs tensile exercises, this force will be further strengthened, making the connection between the first support member 4 and the wall or door frame tighter.

[0034] Specifically, both ends of the first support member 4 are equipped with extendable extension rods 8, and the movable seat is located at the end of the extension rod 8 away from the first support member 4. In this embodiment, the extension rod 8 is a hollow cylinder, and an annular adjusting wheel 81 is provided at the end of the extension rod 8 near the first support member 4. The inner wall of the adjusting wheel 81 is provided with internal threads, and the end of the first support member 4 is provided with an external thread section that is screwed into the internal thread. In use, rotating the adjusting wheel 81 causes the extension rod 8 to reciprocate on the first support member 4 to achieve the telescopic connection between the two. This structure is simple and reliable and can further reduce the manufacturing cost of the fitness machine.

[0035] Specifically, a buffer pad 722 is provided at the end of the fixed base 72 away from the first guide surface 721. The hardness of the buffer pad 722 is less than that of the fixed base 72, and the surface roughness of the buffer pad 722 is greater than or equal to the surface roughness of the bearing surface of the external object. The buffer pad 722 is made of silicone material and is detachably connected to the fixed base 72 for easy disassembly and replacement. The silicone buffer pad 722 can buffer and protect when in contact with the bearing surface, while increasing friction and improving connection stability.

[0036] Specifically, the multi-motor pull fitness machine also includes a suction cup assembly 9 used in conjunction with the first support member 4. The suction cup assembly 9 includes a support rod 91 connected to both ends of the first support member 4 and a vacuum suction cup 92 disposed at the end of the support rod 91. The vacuum suction cup 92 is used to adsorb the support surface of external objects and stably limit the first support member 4. The extension direction of the support rod 91 is perpendicular to the extension direction of the first support member 4. In use, the first support member 4 is parallel to the ground, and the vacuum suction cup 92 is adsorbed onto the smooth ground to achieve a fixed connection between the fitness machine and the ground, and then pull exercises can be performed.

[0037] Specifically, the suction cup assembly 9 further includes a connecting frame 90, which is U-shaped. The recessed portion of the connecting frame 90 is used to accommodate the resistance source 1 and the winding reel 2. Both ends of the first support member 4 are connected to the connecting frame 90 via detachable fasteners. The free end of the support rod 91 has a threaded section, and the vacuum suction cup 92 is threadedly connected to the bottom of the connecting frame 90 via the support rod 91. This structure achieves a stable connection between the resistance training machine and the ground through the cooperation of the vacuum suction cup 92 and the connecting frame 90. The structure is simple and easy to assemble and disassemble.

[0038] Specifically, the multi-motor pull fitness machine also includes a gear reduction mechanism. The output end and input end of the gear reduction mechanism are fixedly connected to the winding discs 2 of two adjacent resistance sources 1, so that the rotation speeds of the winding discs 2 of the two adjacent resistance sources 1 are different. The gear reduction mechanism is the linkage clutch mechanism.

[0039] In actual use, the drive is connected by a belt and multiple gears with different numbers of teeth. For example, a gear with fewer teeth is used as the driving gear and connected to the first winding reel 2, while a gear with more teeth is used as the driven gear and connected to the second winding reel 2. When the first winding reel 2 rotates under the drive of the external motor, the driven gear rotates at different speeds. When the tension rope 3 on the first winding reel 2 is pulled, the second winding reel 2 is decelerated, thus increasing the force. When the tension rope 3 on the second winding reel 2 is pulled, the first winding reel 2 becomes the driven gear, causing its speed to increase and the force to decrease.

[0040] With the addition of a speed reduction mechanism, users can independently adjust the resistance output of the two motors according to their own needs, enabling personalized fitness training. If one motor fails, the other can continue to operate, ensuring the user can continue exercising. Furthermore, the speed reduction mechanism increases torque by reducing rotational speed, thus reducing the load on the external motor and extending its lifespan.

[0041] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A multi-motor pull-up fitness machine, comprising a resistance source (1), a winding reel (2), and a pull rope (3), wherein the rotating part of the resistance source (1) is coaxially connected to the winding reel (2), one end of the pull rope (3) is connected to the winding reel (2), and the other end of the pull rope (3) is used to cooperate with the user's pulling action, and the resistance source (1) outputs torque through the rotating part to drive the winding reel (2) to rotate so that the pull rope (3) is wound on the winding reel (2); characterized in that: It also includes a first support member (4) and a linkage clutch mechanism. The first support member (4) is used to limit the resistance source (1) to the external bearing object. There are multiple resistance sources (1). The rotating parts of two adjacent resistance sources (1) are arranged close to each other. The linkage clutch mechanism is used to separate or link the rotating parts or winding discs (2) of two adjacent resistance sources (1). An external rotating motor is used as a resistance source (1). The rotor (11) of the external rotating motor is fixedly connected to the winding disc (2) as a rotating part. One end of the tension rope (3) is fixedly connected to the winding disc (2), and the other end of the tension rope (3) is provided with a detachable handle (31). The multi-motor tension fitness machine is also equipped with a spline sleeve (6), and a spline shaft (5) is provided on the winding disc (2) or rotating part. The spline sleeve (6) is movably arranged along the central axis of the spline shaft (5). The spline teeth of the spline sleeve (6) and the two adjacent spline shafts (5) are interlocked so that the winding discs (2) of the two adjacent resistance sources (1) rotate in linkage. The spline sleeve (6) is only fitted on the winding disc (2) of one resistance source (1) so that the winding discs (2) of the two adjacent resistance sources (1) rotate independently. The spline sleeve (6) and the spline shaft (5) are a linkage clutch mechanism.

2. The multi-motor pull-up fitness machine according to claim 1, characterized in that: The spline shaft (5) and the winding disc (2) are fixedly connected by detachable fasteners; the linkage clutch mechanism also includes a limiting member, which is used to limit the spline sleeve (6) on the spline shaft (5) to prevent the spline sleeve (6) from moving relative to the central axis of the spline shaft (5).

3. The multi-motor pull-up fitness machine according to claim 1, characterized in that: The length of the spline groove of the spline sleeve (6) is less than or equal to the length of the spline tooth of any spline shaft (5) that meshes with it.

4. The multi-motor pull-up fitness machine according to claim 1, characterized in that: The resistance source (1) is an external rotating motor. The rotor (11) of the external rotating motor is used as the rotating component and is rotatably sleeved on the outside of the first support (4). The winding disc (2) is hollow inside and sleeved on the outside of the first support (4). The ends of the rotor (11) and / or the winding disc (2) are provided with a first bearing mounting part (21) for installing an external bearing.

5. A multi-motor pull-up fitness machine according to claim 1, characterized in that: The first support member (4) is provided with locking mechanisms (7) at both ends. The locking mechanism (7) includes a movable seat (71) located at the end of the first support member (4) away from the resistance source (1) and a fixed seat (72) that slides with the movable seat (71). One end of the fixed seat (72) is used to abut against the bearing surface of the external bearing object. The other end of the fixed seat (72) is provided with an inclined first guide surface (721). The movable seat (71) is provided with an inclined second guide surface (711) at the end near the fixed seat (72). The first guide surface (721) and the second guide surface (711) abut against each other. The sum of the angle between the first guide surface (721) and the horizontal plane and the angle between the second guide surface (711) and the horizontal plane is 180°. When the movable seat (71) moves forward relative to the fixed seat (72), the second guide surface (711) pushes the first guide surface (721) to firmly abut and limit the end of the fixed seat (72) away from the movable seat (71) against the bearing surface of the external object; when the movable seat (71) moves in the opposite direction relative to the fixed seat (72), the second guide surface (711) moves away from the first guide surface (721) so that the end of the fixed seat (72) away from the movable seat (71) separates from the bearing surface of the external object.

6. A multi-motor pull-up fitness machine according to claim 5, characterized in that: Both ends of the first support member (4) are provided with extension rods (8) that can be extended and retracted, and the movable seat (71) is located at the end of the extension rod (8) away from the first support member (4).

7. A multi-motor pull-up fitness machine according to claim 5, characterized in that: The fixed seat (72) is provided with a buffer pad (722) at one end away from the first guide surface (721). The hardness of the buffer pad (722) is less than that of the fixed seat (72) and the external bearing object. The surface roughness of the buffer pad (722) is greater than or equal to the surface roughness of the bearing surface of the external object.

8. A multi-motor pull-up fitness machine according to claim 1, characterized in that: The multi-motor pull fitness machine also includes a suction cup assembly (9) used in conjunction with the first support member (4). The suction cup assembly (9) includes a support rod (91) connected to both ends of the first support member (4) and a vacuum suction cup (92) disposed at the end of the support rod (91). The vacuum suction cup (92) is used to adsorb the bearing surface of external objects to stably limit the first support member (4).

9. A multi-motor pull-up fitness machine according to claim 1, characterized in that: The multi-motor pull fitness machine also includes a deceleration mechanism. The output end and input end of the deceleration mechanism are fixedly connected to the winding discs (2) of two adjacent resistance sources (1) respectively, so that the rotation speeds of the winding discs (2) of the two adjacent resistance sources (1) are different. The deceleration mechanism is a linkage clutch mechanism.

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