Spiral winding device of force damping box

Abstract

The invention discloses a spiral winding device of a strength damping box, and belongs to the technical field of strength training instruments. Comprising a spline rod rotationally installed on a rack. A spline hole is formed in the axis of the lead screw winding wheel, and the lead screw winding wheel slidably sleeves the spline rod; the lead screw winding wheel is provided with a winding part and a lead screw part; the pull rope is wound on the winding part and is used for pulling the lead screw winding wheel to rotate forwards; the lead screw nut is fixed on the rack and is in threaded connection with the lead screw part; the electromagnetic clutch is fixed at one end of the spline rod and the other end is connected with the power device; the elastic end of the elastic assembly abuts against the lead screw winding wheel and is used for pushing the lead screw winding wheel to slide along the spline rod and rotate reversely. Power torque is transmitted through power-on pull-in of the electromagnetic clutch; when the electromagnetic clutch is powered off, the torque is released, so that the lead screw winding wheel can rotate freely; and under the condition of power failure, the elastic assembly provides thrust to ensure that the pull rope is always tensioned, automatically rebounds and cannot be separated from the device, so that the defect that the pull rope cannot be rebounded after being separated under the condition of power failure is overcome.

Description

Technical Field

[0001] This invention relates to the field of strength training equipment technology, specifically to a spiral winding device for a strength damping box. Background Technology

[0002] Many strength training machines use servo motors, cable winders, or springs as resistance sources to output torque. Most of these are bulky and space-consuming. The cable's back-and-forth rotation on the circular winding reel involves a large stroke, resulting in frictional loss and repeated oscillations at the cable exit position, leading to a short wear life. Most importantly, in the absence of power, the motor cannot provide reverse force, causing the cable to be pulled out freely, dangling outside the machine and unable to retract from the damping box, affecting the cable pulley system. Furthermore, when power is suddenly restored, the cable rebounds rapidly, frequently causing damage. Summary of the Invention

[0003] The purpose of this invention is to provide a spiral winding device for a force damping box, which, through a follow-up automatic reset structure and an electromagnetic power transmission structure, enables the steel cable to rebound in the event of a power outage, thereby improving user experience and product competitiveness.

[0004] This invention adopts the following technical solution: a helical winding device for a force damping box, comprising: The spline rod is rotatably mounted on the frame. A lead screw winding reel has a spline hole in its center; the lead screw winding reel is slidably mounted on the splined rod through the spline hole; the lead screw winding reel has a winding part and a lead screw part; A pull rope is wound around the winding section of the lead screw winding wheel; the pull rope is used to pull the lead screw winding wheel to rotate forward; A lead screw nut is fixed to the frame; the lead screw nut is threaded onto the lead screw portion of the lead screw winding reel; An electromagnetic clutch is fixed to one end of the splined rod; the end of the electromagnetic clutch away from the splined rod is used to connect to a power unit. An elastic component is fixed to the frame; the elastic end of the elastic component abuts against the lead screw winding wheel, which is used to push the lead screw winding wheel to slide along the spline bar and reverse.

[0005] Furthermore, a pusher plate perpendicular to the spline rod is fixed on the lead screw winding wheel, and an annular groove concentric with the spline rod is opened on one side of the pusher plate; The elastic end of the elastic component is equipped with a universal ball, which is rolled in an annular groove on the side of the push plate.

[0006] A limiting groove is provided on the side of the push plate away from the elastic component, and a limiting block is fixed on the spline rod that is axially opposite to the limiting groove.

[0007] The elastic component includes a sleeve fixed to the frame, a push rod slidably fitted in the sleeve, and a spring installed in the sleeve for pushing the push rod outward; the end of the push rod away from the sleeve is threadedly connected to the universal ball.

[0008] Multiple elastic components are provided, and the multiple elastic components are parallel to the spline rod and evenly distributed around the spline rod.

[0009] The winding part is cylindrical and is coaxially sleeved on one end of the lead screw part and integrally formed with the lead screw part; an avoidance groove is provided on the side of the winding part near the lead screw nut, and the lead screw nut and the avoidance groove are axially opposite to each other.

[0010] One end of the splined rod is rotatably connected to the frame via a bearing, and the other end of the splined rod is fixedly connected to the output of the electromagnetic clutch.

[0011] The input shaft of the electromagnetic clutch is connected to a servo motor, which is fixed on the frame.

[0012] A wire feeder is rotatably mounted on the frame. The feeder has a wire feed channel tangential to the winding section, through which the pull rope passes.

[0013] The cable outlet includes a rotating seat rotatably mounted on a frame, with the cable outlet channel opened at the center of the rotating seat axis; cable outlet pulleys rotatably mounted on the rotating seat are symmetrically arranged along the axis of the rotating seat; the pull rope is clamped in the grooves on the circumference of the two cable outlet pulleys.

[0014] The beneficial effects of this invention are as follows: The unique electromagnetic clutch is energized and engaged to transmit power torque; when the electromagnetic clutch is de-energized, the torque is released, allowing the lead screw winding wheel to rotate freely without being constrained by the resistance of traditional motors and mechanical gearboxes; in the event of a power failure, the elastic component provides thrust to ensure that the pull rope is always taut and automatically rebounds, preventing it from coming off the device. It is safe and reliable, and completely solves the problem of pull ropes coming off and not rebounding when the power is cut off. The wire exit position on the lead screw winding wheel remains unchanged; when the lead screw winding wheel rotates one revolution, the rope advances 5mm, and the wire always exits at the concentric end of the wire exit device, which is stable and reliable, avoiding the drawbacks of traditional rope pulling with large-scale swaying and wire friction. The cable exit can rotate 360° freely, allowing the cable to exit in any direction for exercise. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of a spiral winding device for a force damping box according to the present invention.

[0017] Figure 2 This is a front view (initial state) of the spiral winding device for a force damping box according to the present invention.

[0018] Figure 3 for Figure 2 View from AA.

[0019] Figure 4 for Figure 2 BB view.

[0020] Figure 5 for Figure 2 Top view.

[0021] Figure 6 for Figure 5 CC view.

[0022] Figure 7 This is a front view (contracted state) of the spiral winding device of a force damping box according to the present invention.

[0023] Figure 8 for Figure 7 Left view.

[0024] Figure 9 for Figure 8 DD view.

[0025] Figure 10 This is a diagram showing the usage state of the spiral winding device for a force damping box according to the present invention; Figure 11 for Figure 10 EE-oriented view.

[0026] Explanation of reference numerals in the attached figures: 1. Lead screw winding wheel; 11. Winding section; 111. Clearance groove; 12. Lead screw section; 13. Push plate; 131. Annular groove; 132. Limiting groove; 2. Lead screw nut; 3. Spline rod; 31. Limit block; 4. Electromagnetic clutch; 41. Electromagnetic clutch coil disc; 42. Electromagnetic clutch outer fixed disc; 5. Elastic components; 51. Push rod; 52. Sleeve; 53. Spring; 54. Universal ball joint; 6. Pull the rope; 7. Servo motor; 8. Frame; 81 bearing; 9. Cable outlet; 91. Rotating base; 92. Cable outlet pulley. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0029] Example 1: like Figures 1 to 4 As shown, this invention provides a helical winding device for a force damping box, including a frame 8 and a splined rod 3, an electromagnetic clutch 4, and a servo motor 7 mounted on the frame 8. The left end of the splined rod 3 is rotatably connected to the frame 8 via a bearing 81, and the right end of the splined rod 3 is fixedly connected to the output shaft of the electromagnetic clutch 4. Both the electromagnetic clutch 4 and the servo motor 7 are fixed on the frame 8, and the servo motor 7 is connected to the input shaft end of the electromagnetic clutch 4. When the electromagnetic clutch 4 is energized, the servo motor 7 can drive the splined rod 3 to rotate through the electromagnetic clutch 4, providing the torque required for combat training; when the electromagnetic clutch 4 is de-energized, it automatically disengages, thereby breaking the transmission between the servo motor 7 and the splined rod 3; at this time, the servo motor 7 and its internal gear reduction mechanism no longer affect the rotation of the splined rod 3, and the splined rod 3 can rotate freely.

[0030] Combined Figures 7 to 9As shown, the lead screw winding reel 1 includes an integrally formed winding portion 11 and a lead screw portion 12. A spline hole is formed at the center of the lead screw portion 12, and the lead screw portion 12 is slidably fitted onto the spline rod 3 through the spline hole; the lead screw portion 12 can slide along the spline rod 3 and can rotate under the drive of the spline rod 3. The winding portion 11 is cylindrical, coaxially sleeved on one end of the lead screw portion 12, and integrally formed with the lead screw portion 12; a clearance groove 111 is formed on the left side of the winding portion 11, and the lead screw nut 2 is axially opposite to the clearance groove 111. The lead screw nut 2 is fixed on the frame 8 and is threadedly connected to the lead screw portion 12. A push plate 13 is fixed to the right end of the winding portion 11, and an annular groove 131 concentric with the spline rod 3 is formed on the left side of the push plate 13. A limiting groove 132 is provided on the right side of the push plate 13, and a limiting block 31 is fixed on the spline rod 3 to be axially matched with the limiting groove 132.

[0031] When the spline rod 3 drives the entire lead screw winding wheel 1 to rotate, the lead screw part 12 and the lead screw nut 2 rotate relative to each other, thereby pushing the entire lead screw winding wheel 1 to move along the spline rod 3. The lead screw nuts 2 and limit blocks 31 on the left and right sides cooperate with the corresponding clearance grooves 111 and limit grooves 132 to limit the stroke of the entire lead screw winding wheel 1.

[0032] The pull rope 6 is wound around the winding section 11 of the screw winding wheel 1, and the free end of the pull rope 6 passes through the wire outlet 9. When the pull rope 6 is pulled, it drives the screw winding wheel 1 to rotate clockwise; as the screw winding wheel 1 rotates, it moves to the left under the action of the screw nut 2, so that the free end of the pull rope 6 is always opposite to the wire outlet 9. In this embodiment, when the pull rope 6 drives the screw winding wheel to rotate one revolution, the screw winding wheel spirals forward 5mm in the screw nut, thereby keeping the wire outlet position unchanged.

[0033] like Figure 1 , Figure 2 and Figures 7 to 9 As shown, the elastic component 5 is fixed on the frame 8. The right end of the elastic component 5 is an automatically extending elastic end. The elastic end is equipped with a universal ball 54, which is rolled in the annular groove 131 on the side of the push plate 13. The electromagnetic clutch 4 consists of two parts: an electromagnetic clutch coil disk 41 and an electromagnetic clutch outer fixed disk 42. When the electromagnetic clutch coil disk 41 is energized, it engages and connects the spline rod 3 to the servo motor 7. When the electromagnetic clutch coil disk 41 is de-energized, it disengages, thereby breaking the transmission between the spline rod 3 and the servo motor 7. When the electromagnetic clutch 4 is de-energized, the spline rod 3 and the lead screw winding wheel 1 can rotate freely. At this time, the elastic end of the elastic component 5 will push the push plate 13 to the right, causing the entire lead screw winding wheel 1 to move to the right. While the lead screw winding wheel 1 moves to the right, it will reverse under the action of the lead screw nut 2, rewinding the pull rope 6 onto the lead screw winding wheel 1, thus achieving automatic rebound of the pull rope 6 in the de-energized state.

[0034] Example 2: Based on the above embodiment one, combined with Figures 7 to 9 As shown, in this embodiment, two elastic components 5 are provided, which are parallel to the spline rod 3 and evenly distributed around the spline rod 3. The elastic component 5 includes a sleeve 52 fixed on the frame 8, and a push rod 51 is slidably fitted on the right end of the sleeve 52. A universal ball 54 is fixed to the right end of the push rod 51 by a threaded connection. A spring 93 is installed in the sleeve 52, and the spring 93 pushes the push rod 51 outward. The push rod 51 provides thrust within its stroke range, ensuring that in the event of a power outage, the push rod 51 can push the lead screw winding wheel to the right and rotate under the action of the lead screw nut 2, returning to the initial position and keeping the pull rope taut and preventing it from coming off.

[0035] Example 3: Based on the above embodiment one, combined with Figures 2 to 6 As shown, the transmitter 9 includes a rotating base 91 rotatably mounted on the frame 8. A wire outlet channel is formed at the axis of the rotating base 91, tangent to the winding section 11. The pull rope 6 passes through the wire outlet channel. Two wire outlet pulleys 92 are rotatably mounted on the rotating base 91, symmetrically arranged along the axis of the rotating base 91. The pull rope 6 is held in the grooves on the circumference of the two wire outlet pulleys 92. Combination Figure 10 and Figure 11 As shown, the spiral winding device is installed in the damping box, and the rotating seat 91 is located at the bottom of the front side of the damping box and extends out of the damping box; in use, the rotating seat 91 can rotate 360° to ensure that the pull rope can exit in all directions.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A helical winding device for a force-damping tank, characterized in that, The utility model relates to a wire winding device, including: Spline rod (3) is rotatably installed on frame (8); Screw rod winding wheel (1) is axially provided with spline hole; Screw rod winding wheel (1) is slidably sleeved on spline rod (3) through spline hole; Screw rod winding wheel (1) has winding part (11) and screw rod part (12); Pull rope (6) is wound on winding part (11) of screw rod winding wheel (1); Pull rope (6) is used to pull screw rod winding wheel (1) and rotate forward; Screw rod nut (2) is fixed on frame (8); Screw rod nut (2) is threadedly connected on screw rod part (12) of screw rod winding wheel (1); Electromagnetic clutch (4) is fixed on one end of spline rod (3); The other end of electromagnetic clutch (4) is used for connecting power device away from spline rod (3); Elastic component (5) is fixed on frame (8); The elastic end of elastic component (5) is abutted on screw rod winding wheel (1) and is used to push screw rod winding wheel (1) and slide along spline rod (3) and reverse.

2. A helical winding device for a force-damping tank according to claim 1, characterized in that: The screw rod winding wheel (1) is fixed with a push disc (13) perpendicular to the spline rod (3), and the push disc (13) is provided with an annular groove (131) coaxial with the spline rod (3) on one side surface; The elastic end of the elastic component (5) is provided with a universal ball (54), which is rollingly installed in the annular groove (131) on the side surface of the push disc (13).

3. A helical winding device for a force-damping tank according to claim 2, characterized in that: The push disc (13) is provided with a limiting groove (132) on the side away from the elastic component (5), and the spline rod (3) is fixed with a limiting block (31) axially matched with the limiting groove (132).

4. A helical winding device for a force-damping tank according to claim 1, characterized in that: The elastic component (5) includes a sleeve (52) fixed on the frame (8), a push rod (51) slidably sleeved in the sleeve (52), and a spring (93) installed in the sleeve (52) and used to push the push rod (51) outward; The end of the push rod (51) away from the sleeve (52) is threadedly connected with the universal ball (54).

5. A helical winding device for a force-damping tank according to claim 1, characterized in that: The elastic component (5) is provided with a plurality of elastic components (5) parallel to the spline rod (3) and uniformly distributed around the spline rod (3).

6. A helical winding device for a force-damping tank according to claim 1, characterized in that: The winding part (11) is cylindrical, coaxially sleeved on one end of the screw rod part (12) and integrally formed with the screw rod part (12); The winding part (11) is provided with an avoiding groove (111) on the side close to the screw rod nut (2), and the screw rod nut (2) is axially matched with the avoiding groove (111).

7. A helical winding device for a force-damping tank according to claim 1, characterized in that: One end of the spline rod (3) is rotatably connected with the frame (8) through a bearing (81), and the other end of the spline rod (3) is fixedly connected with the output shaft of the electromagnetic clutch (4).

8. A helical winding device for a force damper tank according to claim 7, characterized in that: The input shaft of the electromagnetic clutch (4) is connected with a servo motor (7), and the servo motor (7) is fixed on the frame (8).

9. A helical winding device for a force-damping tank according to claim 1, characterized in that: The frame (8) is rotatably provided with a wire outlet (9), and the wire outlet (9) has a wire outlet channel tangent to the winding part (11), and the pull rope (6) passes through the wire outlet channel.

10. A helical winding device for a force damper tank according to claim 9, characterized in that: The wire outlet device (9) comprises a rotating seat (91) which is rotatably installed on the frame (8), and the rotating seat (91) is provided with the wire outlet channel in the axis; the wire outlet pulleys (92) which are symmetrically arranged along the axis of the rotating seat (91) are rotatably installed on the rotating seat (91); and the pull rope (6) is clamped in the wheel grooves on the circumferences of the two wire outlet pulleys (92).

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