Training host with resistance provided by servo motor and upper limb strength training device

Abstract

The utility model discloses a training host with resistance provided by a servo motor and an upper limb strength training device, and the training host comprises a mounting rack, a first pulley, a second pulley, a first connecting rod and a second connecting rod, the servo motor is fixed to the lower end of the mounting frame, and a rotating shaft of the servo motor is provided with a reset wheel and a belt wheel; the reset plate is vertically slidably arranged on the mounting frame, and a second pulley is arranged at the upper end of the reset plate; one end of the transmission belt is fixed at the bottom of the reset plate, and the other end is wound on the belt wheel; one end of the reset rope is wound on the reset wheel, and the other end of the reset rope is fixed at the top of the mounting frame after sequentially winding through the first pulley and the second pulley; the winding direction of the reset rope is opposite to that of the transmission belt; one end of the resistance rope is fixed to the top of the reset plate from top to bottom, and the other end extends outwards. According to the utility model, the servo motor is adopted to provide tensile resistance for the resistance rope, the purpose of stepless adjustment of the resistance is realized, and the resistance rope can be automatically reset during power failure, so that the problem of looseness of the resistance rope is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a training host and an upper limb strength training device with resistance provided by a servo motor. Background Art

[0002] The resistance source used in conventional muscle strength testing and training systems on the market is basically an iron block. When the operator wants to adjust different resistances, he usually manually pulls out the pin on the iron block and then inserts the pin into the corresponding iron block. However, the size of the iron block is limited by space. Usually a single iron block is 2.5KG, and the minimum resistance value is not small enough. The adjustable resistance level is 2.5KG. The minimum resistance is also 2.5KG and above, which is mainly suitable for the field of sports and fitness equipment; in the field of rehabilitation therapy in hospitals, many patients do not have such strong force when they first use it, so it is not suitable.

[0003] For example, as shown in the existing CN219071950U and CN219149162U, both mention the technical solution of using a motor as a resistance source to provide training resistance. Although it can achieve the required adjustment of a smaller resistance range, after the pull rope is pulled downward, the motor is required to provide reverse pulling force to achieve the purpose of resetting and repeated stretching exercises. In the event of a power outage, the stretched pull rope will not reset to a relaxed state. First, it is easy to cause it to fall off between the pulley, resulting in the need for maintenance. Second, during use, the pull handle will fall downward without stretching resistance when the power is off, injuring the user below. Utility Model Content

[0004] The utility model aims to overcome the existing technical defects and provide a training host with resistance provided by a servo motor. The servo motor is used to provide tensile resistance for the resistance rope, so as to achieve the purpose of stepless adjustment of resistance. The use of a reset plate and a reset rope can automatically reset the resistance rope when power is off, so as to avoid the problem of loose resistance rope.

[0005] In the first aspect, in order to solve the above technical problems, the utility model provides a training host with resistance provided by a servo motor, comprising:

[0006] A mounting frame, wherein a first pulley is rotatably provided on the top of the mounting frame;

[0007] A servo motor, wherein the servo motor is fixed to the lower end of the mounting frame, and a reset wheel and a pulley are arranged on the rotating shaft of the servo motor;

[0008] A reset plate is slidably mounted on the mounting frame, and a second pulley is rotatably mounted on the upper end of the reset plate;

[0009] A transmission belt, one end of which is fixed to the bottom of the reset plate, and the other end of which is wound and fixed on the pulley;

[0010] A reset rope, one end of which is wound and fixed on the reset wheel, and the other end of which is wound around the first pulley and the second pulley in sequence and then fixed on the top of the mounting frame; the winding direction of the reset rope on the reset wheel is opposite to the winding direction of the transmission belt on the pulley;

[0011] A resistance rope has one end fixed from top to bottom to the top of the reset plate for pulling the reset plate upward, and the other end extending outward.

[0012] Furthermore, a fixing frame is provided at the lower end of the mounting frame, the servo motor is arranged in the fixing frame, a third pulley is rotatably provided at the bottom of the reset plate, and one end of the transmission belt is wound around the third pulley and fixed to the top of the fixing frame.

[0013] Furthermore, the mounting frame is provided with two vertically arranged sliding rods, and the two ends of the reset plate are respectively slidably arranged on the two sliding rods through linear bearings.

[0014] Furthermore, the upper end of the sliding rod is fixed to the upper end of the mounting frame, and the lower end is fixed to the top of the fixing frame.

[0015] Furthermore, the sliding rod is sleeved with a shock-absorbing sleeve located between the reset plate and the fixing frame.

[0016] Furthermore, a fourth pulley located on one side of the reset wheel is rotatably provided on the inner side of the fixing frame, and one end of the reset rope is successively wound around the fourth pulley, the first pulley and the second pulley from bottom to top and then fixed to the top of the mounting frame.

[0017] Furthermore, a mounting seat is provided in the middle of the top of the reset plate, the second pulley is rotatably disposed in the mounting seat, and one end of the resistance rope is fixed to the top of the mounting seat from top to bottom.

[0018] Furthermore, the upper end of the mounting frame is also provided with two fifth pulleys and a sixth pulley distributed on the left and right, and the other end of the resistance rope is sequentially wound around the fifth pulley and the sixth pulley and then extends toward the lower end of the mounting frame.

[0019] Furthermore, a reset spring is provided between the top of the mounting frame and the reset rope.

[0020] In the second aspect, the utility model also provides an upper limb strength training device, including an upper limb trainer, and also includes a training host with resistance provided by a servo motor as described in any one of the first aspects, the upper limb trainer includes a bracket and a pulling handle rotatably arranged on the bracket in a lever manner, and the end of the resistance rope away from the reset plate is connected to one end of the pulling handle.

[0021] The utility model has the following beneficial effects:

[0022] In the utility model, a servo motor is used to provide stretching resistance for the resistance rope. After the servo motor is powered on, the default rotation direction is to retract the transmission belt and the resistance rope. When the resistance rope retracts, the reset rope is stretched outward. When the operator stretches the resistance rope outward, the servo motor reverses. When the operator does not exert force, the servo motor rotates forward to retract the resistance rope. When the servo motor reverses, the reset plate moves upward, and when the servo motor rotates forward, the reset plate moves downward. In this way, the servo motor is used to achieve the purpose of infinitely adjustable resistance. Generally, the minimum resistance can be adjusted to 0.1KG, and the maximum resistance can be adjusted to 55KG. The resistance range The medical device meets the rehabilitation training needs of patients. Since the winding directions of the transmission belt and the reset rope are opposite, when the training host is powered off or turned off, the reset plate moves downward under the action of its own weight, driving the reset wheel and the servo motor to rotate together, and synchronously driving the pulley to retract the transmission belt, and the resistance rope is retracted into the training host, thereby ensuring that the transmission belt, resistance rope and reset rope are in a tensioned state when the training host is working or after the power is turned off, achieving the purpose of automatic reset, avoiding the problem of slackness of the resistance rope, and further avoiding the problem of the resistance rope falling off and external training equipment falling down and injuring people.

[0023] Secondly, the reset spring can form an elastic connection between the reset rope and the mounting frame, so that the reset rope is in an elastically tensioned state.

[0024] Additional aspects and advantages of the present invention will be partially given in the following description, which will become apparent from the following description or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 A schematic diagram of a training host in an embodiment;

[0027] Figure 2 This is an internal schematic diagram of a training host in an embodiment;

[0028] Figure 3 for Figure 2 A is an enlarged schematic diagram;

[0029] Figure 4 for Figure 2 A magnified schematic diagram of B;

[0030] Figure 5 Schematic diagram of the upper limb strength training device in Example 2. DETAILED DESCRIPTION

[0031] In order to more fully understand the technical content of the present invention, the present invention will be further introduced and explained in conjunction with the accompanying drawings and specific embodiments below; it should be noted that descriptions such as "first" and "second" in the text are used to distinguish different components, etc., and do not represent the order of precedence, nor do they limit the "first" and "second" to different types.

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the utility model.

[0033] Example 1

[0034] like Figures 1 to 4 As shown, the training host 100 provided with resistance by a servo motor shown in this embodiment comprises a mounting frame 1, a servo motor 2, a reset plate 3, a transmission belt 4, a reset rope 5 and a resistance rope 6; a first pulley 11 is rotatably provided on the top of the mounting frame 1, the servo motor 2 is fixed to the lower end of the mounting frame 1, and a reset wheel 21 and a pulley 22 distributed front and back are provided on the rotating shaft of the servo motor 2, that is, the reset wheel 21 and the pulley 22 rotate synchronously driven by the rotating shaft; the reset plate 3 is slidably arranged on the mounting frame 1 up and down, and a second pulley 31 is rotatably provided on the upper end of the reset plate 3; one end of the transmission belt 4 is fixed to the bottom of the reset plate 3, and the other end is wound and fixed on the pulley 22, that is, the winding and extension of the transmission belt are realized in the process of the reset plate moving up and down; one end of the reset rope 5 is wound and fixed On the reset wheel 21, the other end is successively wound around the first pulley 11 and the second pulley 31 at the upper end and then fixed to the inner top of the mounting frame 1, that is, one end of the reset rope 5 first extends from bottom to top and winds through the first pulley 11 and then changes direction, then extends from top to bottom and winds through the second pulley 31 and then changes direction again, and finally extends upward and is fixed to the inner top of the mounting frame 1; the winding direction of the reset rope 5 on the reset wheel 21 is opposite to the winding direction of the transmission belt 4 on the pulley 22, so that the two are always in a state of one stretching and one contracting; one end of the resistance rope 6 is fixed from top to bottom to the top of the reset plate 3 for pulling the reset plate 3 upward, and the other end extends outward for connecting with an external upper limb trainer to provide stretching resistance for the upper limb trainer.

[0035] When the above-mentioned training host is in use, the servo motor rotates in the default direction of causing the transmission belt and the resistance rope to retract after being energized. While the resistance rope retracts, the reset rope is stretched outward. The servo motor is set to have a basic force F, that is, the servo motor drives the resistance rope to retract by default when the machine is turned on. This basic force F must be greater than the weight of the reset plate. When the operator stretches the resistance rope outward, the servo motor reverses. When the operator does not exert force, the servo motor rotates forward to retract the resistance rope. When the servo motor reverses, the reset plate moves upward, and when the servo motor rotates forward, the reset plate moves downward, that is, the up and down movement of the reset plate is the retractable stroke of the transmission belt. When the reset plate falls to the bottom, it is the end point of the retraction of the resistance rope, and when the reset plate reaches the highest point, it is the end point of the resistance rope being pulled outward.

[0036] In addition, in the above structure, a servo motor is used to provide tensile resistance for the resistance rope, so that the servo motor is used to achieve the purpose of infinitely adjustable resistance. Generally, the minimum resistance can be adjusted to 0.1KG, and the maximum resistance can be adjusted to 55KG. This resistance range meets the rehabilitation exercise needs of patients using medical equipment; because the winding directions of the transmission belt and the reset rope are opposite, when the training host is powered off or turned off, the reset plate moves downward under the action of its own weight, driving the reset wheel and the servo motor to rotate together, and synchronously driving the pulley to recycle the transmission belt, and the resistance rope is retracted into the training host, thereby ensuring that the transmission belt, resistance rope, and reset rope are in a tensioned state when the training host is working or after the power is turned off, achieving the purpose of automatic reset, avoiding the problem of slackness of the resistance rope, and then avoiding the problem of the resistance rope falling off and external training equipment falling down and injuring people.

[0037] In one embodiment, if Figure 3 As shown, a fixing frame 12 is provided at the lower end of the mounting frame 1, the servo motor 2 is arranged in the fixing frame 12, a third pulley 32 is rotatably provided in the middle of the bottom of the reset plate 3, and one end of the transmission belt 4 is wound around the upper end of the third pulley 32 and then fixed to the top of the fixing frame 12.

[0038] In this embodiment, Figure 2 and Figure 3 As shown, in order to realize the up and down sliding of the reset plate, two sliding rods 13 are arranged at intervals and extend in the longitudinal direction on the mounting frame 1, and the two ends of the reset plate 3 are slidably arranged on the two sliding rods 13 through linear bearings 33 respectively; specifically, the upper end of the sliding rod 13 is fixed to the inner top of the mounting frame 1, and the lower end is fixed to the top of the fixing frame 12, so that the reset plate 3 can slide up and down between the top of the mounting frame 1 and the fixing frame 12.

[0039] In one embodiment, if Figure 3As shown, in order to prevent the reset plate from damaging the third pulley 32 and the fixing frame 12 below when falling down to reset, a shock-absorbing sleeve 14 is mounted on the sliding rod 13 and located between the reset plate 3 and the fixing frame 12 to achieve shock absorption of the reset plate 3; of course, the height of the shock-absorbing sleeve is greater than the vertical distance between the outermost side of the third pulley and the bottom of the reset plate; the shock-absorbing sleeve is preferably a silicone sleeve, and a spring can also be selected.

[0040] In one embodiment, if Figure 3 As shown, a fourth pulley 15 located on one side of the reset wheel 21 is also rotatably provided on the inner side of the fixing frame 12, and the reset rope is conveniently wound from bottom to top and extended smoothly through the fourth pulley. One end of the reset rope 5 is wound from bottom to top through the fourth pulley 15, the first pulley 11 and the second pulley 31 in sequence and then fixed to the top of the mounting frame 1.

[0041] As a preference, Figure 3 As shown, a mounting seat 34 is provided in the middle of the top of the reset plate 3, the second pulley 31 is rotatably disposed in the mounting seat 34, and one end of the resistance rope 6 is fixed to the top of the mounting seat 34 from top to bottom to maintain the balance of the tensile force.

[0042] In one embodiment, if Figure 4 As shown, the upper end of the mounting frame 1 is also provided with two fifth pulleys 16 and a sixth pulley 17 distributed on the left and right. The other end of the resistance rope 6 is sequentially wound around the fifth pulley 16 and the sixth pulley 17 and then extends toward the lower end of the mounting frame 1 or outside, that is, the two pulleys are used to change the extension direction of the resistance rope.

[0043] In one embodiment, if Figure 4 As shown, a reset spring 7 is provided between the top of the mounting frame 1 and the reset rope 5; since the pulley 22 and the reset wheel 21 rotate simultaneously and in opposite directions, the diameters of the pulley and the reset wheel are set to be different in actual use, and the wire diameters of the transmission belt 4 and the reset rope 5 are also different. The rotation process will cause the length ratio of the transmission belt 4 and the reset rope 5 wound on the wheels to change, and the reciprocating rotation will be tightened and relaxed. The reset spring can compensate for the change in winding length. The spring is lengthened when tightened and shortened when relaxed. Therefore, the reset spring can be used to form an elastic connection between the reset rope and the mounting frame, so that the reset rope is in an elastic tension state.

[0044] In another embodiment, if Figure 1 and Figure 2 As shown, the training host also includes a shell 8 covering the outside of the mounting frame 1, and one end of the resistance rope 6 extends out of the shell 8 after passing through the seventh pulley 18 arranged at the lower end of the mounting frame 1.

[0045] In other embodiments, the reset plate is preferably an iron plate.

[0046] In other embodiments, the transmission belt is preferably a webbing belt.

[0047] Example 2

[0048] like Figure 1-Figure 5 As shown, an upper limb strength training device shown in this embodiment includes an upper limb trainer and also includes a training host 100 with resistance provided by a servo motor as described in Example 1. The upper limb trainer includes a bracket 101 and a pulling handle 102 that is rotatable on the bracket 101 in a lever manner. The end of the resistance rope 6 away from the reset plate is connected to one end of the pulling handle 102 after passing through a pulley group, so that when the other end of the pulling handle 102 is pulled downward for exercise, the resistance rope 6 will be pulled upward to move the iron plate in the training host upward, and when the pulling handle is relaxed, the resistance rope is reset after rotating upward under the action of the servo motor or the reset plate; of course, the weight of the reset plate is generally greater than the weight of the end of the pulling handle away from the resistance rope, so that the weight of the reset plate can be used to reset the pulling handle upward when the power is off.

[0049] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A training host with resistance provided by a servo motor, characterized in that: include: A mounting frame, wherein a first pulley is rotatably provided on the top of the mounting frame; A servo motor, the servo motor is fixed to the lower end of the mounting frame, and a reset wheel and a pulley are arranged on the rotating shaft of the servo motor; A reset plate is slidably mounted on the mounting frame, and a second pulley is rotatably mounted on the upper end of the reset plate; A transmission belt, one end of which is fixed to the bottom of the reset plate, and the other end of which is wound and fixed on the pulley; A reset rope, one end of which is wound and fixed on the reset wheel, and the other end of which is wound around the first pulley and the second pulley in sequence and then fixed on the top of the mounting frame; the winding direction of the reset rope on the reset wheel is opposite to the winding direction of the transmission belt on the pulley; A resistance rope has one end fixed from top to bottom to the top of the reset plate for pulling the reset plate upward, and the other end extending outward.

2. The training host with resistance provided by a servo motor as claimed in claim 1, characterized in that: A fixing frame is arranged at the lower end of the mounting frame, the servo motor is arranged in the fixing frame, a third pulley is rotatably arranged at the bottom of the reset plate, and one end of the transmission belt is wound around the third pulley and then fixed to the top of the fixing frame.

3. The training host with resistance provided by a servo motor as claimed in claim 2, characterized in that: The mounting frame is provided with two vertically arranged sliding rods, and the two ends of the reset plate are respectively slidably arranged on the two sliding rods through linear bearings.

4. The training host with resistance provided by a servo motor as claimed in claim 3, characterized in that: The upper end of the sliding rod is fixed to the upper end of the mounting frame, and the lower end is fixed to the top of the fixing frame.

5. The training host with resistance provided by a servo motor as claimed in claim 4, characterized in that: The sliding rod is sleeved with a shock-absorbing sleeve located between the reset plate and the fixing frame.

6. The training host with resistance provided by a servo motor as claimed in any one of claims 2 to 5, characterized in that: The inner side of the fixing frame is also rotatably provided with a fourth pulley located on one side of the reset wheel. One end of the reset rope is successively wound around the fourth pulley, the first pulley and the second pulley from bottom to top and then fixed to the top of the mounting frame.

7. The training host with resistance provided by a servo motor as claimed in claim 6, characterized in that: A mounting seat is provided in the middle of the top of the reset plate, the second pulley is rotatably arranged in the mounting seat, and one end of the resistance rope is fixed to the top of the mounting seat from top to bottom.

8. The training host with resistance provided by a servo motor as claimed in claim 7, characterized in that: The upper end of the mounting frame is also provided with two fifth pulleys and a sixth pulley distributed on the left and right. The other end of the resistance rope is sequentially wound around the fifth pulley and the sixth pulley and then extends toward the lower end of the mounting frame.

9. The training host with resistance provided by a servo motor as claimed in claim 6, characterized in that: A reset spring is arranged between the top of the mounting frame and the reset rope.

10. An upper limb strength training device, comprising an upper limb training device, characterized in that: It also includes a training host with resistance provided by a servo motor as described in any one of claims 1-9, the upper limb trainer includes a bracket and a pulling handle that is rotatable on the bracket in a lever manner, and the end of the resistance rope away from the reset plate is connected to one end of the pulling handle.

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