Pull rope resistance device with fixed rope outlet

Abstract

The utility model discloses a pull rope resistance device with a fixed rope outlet. The pull rope resistance device comprises a mounting frame, a limiting piece is arranged on the mounting frame, a sliding shaft is arranged between one end of the mounting frame and the limiting piece, a reel is sleeved outside the sliding shaft, a resistance source is arranged at the other end of the mounting frame, and the sliding shaft penetrates through the limiting piece to be connected with the output end of the resistance source. A sliding way is arranged in the reel in the length direction of the reel, the reel is connected with the sliding shaft through the sliding way, and a pull rope is arranged on the reel. According to the pull rope resistance device, the spiral groove is formed in the periphery of the winding wheel, the limiting piece and the sliding shaft are matched, synchronous movement of the winding wheel in the rope pulling process is effectively achieved, the winding space needed by a long pull rope is met, fixing of the rope outlet position is achieved, and compared with the prior art, the pull rope resistance device is simpler in structure, lower in cost and convenient to use. The size of the device is reduced, the smoothness, the stability and the durability of the device are improved, and the fitness equipment is smaller in size and lighter and has better applicability and practical significance.

Description

Technical Field

[0001] The utility model belongs to the technical field of fitness equipment, and in particular relates to a rope-pulling resistance device with a fixed rope outlet. Background Art

[0002] In order to meet people's pursuit of convenient, intelligent and multifunctional strength training equipment, the common strength training equipment on the market currently uses motors or springs as resistance sources. Such equipment is small in size, light in weight and can be digitally controlled. Such small and convenient equipment must meet the needs of users of different body shapes or different training movements for the length of the pull rope. Generally, a winding wheel is used to wind the pull rope around the winding wheel to ensure that the pull rope is long enough. On the other hand, the position of the rope outlet extending outward from the equipment must be relatively fixed to ensure safety during use.

[0003] In order to achieve a sufficiently long pull rope and a relatively fixed position of the rope outlet, one way is to perform single-row and multi-layer winding on the winding wheel. This method has many disadvantages. For example, when the pull rope is pulled, as the outer layer of the pull rope loosens from the winding wheel turn by turn, the winding radius of the remaining inner layers of the pull rope becomes smaller and smaller. When the torque output by the resistance source is constant, the user is required to use a greater pulling force to overcome the output torque of the resistance source. This inconsistency in pulling force will affect the training effect and user experience. In addition, during use, this single-row and multi-layer winding method of the pull rope will cause friction between adjacent layers of the pull rope, which will accelerate the wear of the pull rope and reduce the service life of the equipment.

[0004] In order to solve the problems caused by the sampling single-row multi-layer winding method, in some schemes, the output shaft of the resistance source is set to a spline shaft, a spline groove is provided at one end of the inner ring of the winding wheel, the spline shaft is connected to the spline groove, and a screw is provided at the other end of the winding wheel, and an internal threaded hole is provided on the mounting frame, and the screw is inserted into the internal threaded hole and threadedly connected to the mounting frame. The outer periphery of the winding wheel is provided with a spiral semi-arc groove with the same pitch and the same rotation direction as the screw, and the pull rope is wound in the groove. When the resistance source drives the spline shaft to rotate, it will rotate with the winding wheel, thereby driving the screw at the other end of the winding wheel to rotate, and the screw will be screwed into or out of the internal threaded hole of the mounting frame, so that the winding wheel moves axially relative to the mounting frame. Because the spiral semi-arc groove on the outer periphery of the winding wheel has the same pitch as the screw, the axial movement speed of the winding wheel relative to the mounting frame is adapted to the loosening or winding of the pull rope, and finally the rope outlet position of the pull rope is relatively fixed, while also avoiding the wear problem caused by the single-row multi-layer winding method. However, this solution also has its shortcomings. For example, because a screw is provided at one end of the winding wheel, a longer space for movement is required. The longer the pull rope is, the longer the winding wheel and screw are required, and the larger the space required, thereby increasing the size of the entire equipment. In addition, because the screw needs to be screwed in or out of the internal threaded hole, its end cannot be installed with a bearing to bear the radial force. One end of the screw is equivalent to being suspended in the air. Under a large pull rope force, the screw will warp or bend and deform, thereby affecting the fit between the screw and the internal threaded hole, resulting in thread eccentric wear, jamming, etc. Moreover, due to the use of components such as screws and splines, the friction force itself during the sliding process is relatively large, and the structure is relatively complex. Taking all the above factors into consideration, the long-term operation of the equipment will experience problems such as increased movement resistance, uneven rotation, increased movement noise, and poor operating experience. Utility Model Content

[0005] The utility model aims to provide a rope resistance device with a fixed rope outlet, so as to solve the problem that the thread is easily worn and stuck during the matching process between the screw rod and the internal thread hole in the rope resistance device in the prior art.

[0006] The technical solution adopted by the utility model is that a rope-pulling resistance device with a fixed rope outlet comprises a mounting frame, a limiting piece is arranged on the mounting frame, a sliding shaft is arranged between one end of the mounting frame and the limiting piece, a winding wheel is connected to the outer surface of the sliding shaft, a resistance source is arranged at the other end of the mounting frame, the sliding shaft passes through the limiting piece and is connected to the output end of the resistance source; a slideway is arranged inside the winding wheel along its length, the winding wheel is connected to the sliding shaft through the slideway, and a pull rope is arranged on the winding wheel.

[0007] The utility model is also characterized in that:

[0008] A spiral groove is arranged on the outer periphery of the winding wheel, one end of a pull rope is fixed on the winding wheel, and the other end of the pull rope is a free end. The pull rope is wound around the winding wheel along the spiral groove in circles.

[0009] The limiting member is a circular ring structure or an annular sleeve with an internal thread, and the limiting member is threadedly connected with the spiral groove.

[0010] A bearing is arranged at one end of the mounting frame away from the resistance source.

[0011] The sliding shaft is set on the central axis of the winding wheel. The longitudinal section of the sliding shaft is non-circular. The shape of the slideway matches the sliding shaft. The winding wheel is sleeved on the sliding shaft through the slideway. The end of the sliding shaft away from the resistance source is connected to the mounting frame through a bearing. The winding wheel can slide along the sliding shaft but cannot rotate.

[0012] A ball groove is arranged on the outer wall of the sliding shaft along its length, and balls are arranged in the ball groove. The longitudinal cross-sectional shape of the slideway matches the outer contour of the combination of the sliding shaft and the balls. The winding wheel is sleeved on the sliding shaft, and the end of the sliding shaft away from the resistance source is connected to the mounting frame through a bearing. The winding wheel can slide along the sliding shaft but cannot rotate.

[0013] The sliding shaft includes a first central sliding shaft and a first side sliding shaft, and the slideway includes a first central sliding shaft matching the first central sliding shaft and a first side sliding shaft matching the first side sliding shaft; the first central sliding shaft is arranged along the central axis of the winding wheel, the first side sliding shaft is arranged parallel to the first central sliding shaft, the first central sliding shaft is used in conjunction with the first central sliding shaft, the first side sliding shaft is used in conjunction with the first side sliding shaft, and the number of the first central sliding shaft is 1; the number of the first side sliding shaft is not less than 1, and the number of the first side sliding shafts corresponds to the number of the first side sliding shafts. The winding wheel is sleeved on the first central sliding shaft and the first side sliding shaft, and under the restriction of the first side sliding shaft, the winding wheel can slide along the first central sliding shaft and the first side sliding shaft but cannot rotate relative to the first central sliding shaft. A first transmission plate is also provided at one end of the winding wheel away from the limiter, and a first center hole matching the first center sliding shaft and a first side hole matching the first side sliding shaft are provided on the first transmission plate. One end of the first center sliding shaft and the first side sliding shaft are both connected to the output end of the resistance source, and the other ends of the first center sliding shaft and the first side sliding shaft respectively penetrate the first center hole and the first side hole, and the first center sliding shaft passes through the first center hole and is connected to the mounting frame through a bearing. When the output end of the resistance source drives the first center sliding shaft to rotate, the rotational torque can be transmitted to the first transmission plate through the first center sliding shaft.

[0014] The sliding shaft includes a plurality of second side sliding shafts, the slideway includes a second side sliding track with the same number as the second side sliding shafts, the plurality of second side sliding shafts are arranged in parallel, and the second side sliding shafts are used in conjunction with the second side sliding tracks. A second transmission plate is also arranged on the end of the winding wheel away from the limiter, and a second side hole used in conjunction with the second side sliding shaft is arranged on the second transmission plate, one end of the second side sliding shaft is connected to the output end of the resistance source, and the other end of the second side sliding shaft is inserted into the second side hole; a center column is also arranged on the end of the second transmission plate connected to the mounting frame, and the center column is connected to the mounting frame through a bearing; the number of the second side sliding shafts, the second side holes and the second side sliding tracks corresponds one to one. The winding wheel is sleeved on the second side sliding shaft, and under the restriction of the second side sliding shaft, the winding wheel can slide along the axis direction thereof but cannot rotate.

[0015] The beneficial effects of the present invention are as follows: the rope-pulling resistance device with a fixed rope outlet of the present invention effectively utilizes the spiral groove arranged on the outer periphery of the winding wheel, and by providing a limit piece, and the limit piece is used in conjunction with the spiral groove arranged on the outer periphery of the winding wheel, when the winding wheel rotates, the limiting effect of the limit piece causes the winding wheel to slide axially on the sliding shaft, thereby realizing the synchronous axial movement of the winding wheel while rotating during the rope-pulling process, and finally realizing the fixing of the winding space and the rope outlet position required for the long rope; compared with the deficiencies of the prior art, the rope-pulling resistance device with a fixed rope outlet of the present invention further reduces the size of the device, and the structure is simpler, and the smoothness of the rope pull, the stability and durability of the winding wheel are also stronger, and the applicability is also stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the first solution of the rope-pulling resistance device with a fixed rope outlet of the utility model;

[0017] Figure 2 This is an exploded view of the overall structure of the first solution of the rope-pulling resistance device with a fixed rope outlet of the utility model;

[0018] Figure 3 This is a front view of the first embodiment of the winding wheel of the rope pulling resistance device with a fixed rope outlet of the utility model;

[0019] Figure 4 It is an axonometric view of the first solution of the winding wheel of the rope-pulling resistance device with a fixed rope outlet of the utility model;

[0020] Figure 5 It is an axonometric diagram of the central sliding shaft of the first solution of the rope pulling resistance device with a fixed rope outlet of the utility model;

[0021] Figure 6 It is an axonometric diagram of a limiting member of the first solution of the rope-pulling resistance device with a fixed rope outlet of the utility model;

[0022] Figure 7This is a schematic diagram of the overall structure of the second solution of the rope-pulling resistance device with a fixed rope outlet of the utility model;

[0023] Figure 8 This is an exploded view of the overall structure of the second solution of the rope-pulling resistance device with a fixed rope outlet of the utility model;

[0024] Fig. 9 It is an axonometric diagram of the central sliding shaft of the second scheme of the rope pulling resistance device with a fixed rope outlet of the utility model;

[0025] Fig.10 It is a front view of the second solution of the winding wheel of the rope pulling resistance device with a fixed rope outlet of the utility model;

[0026] Fig.11 This is a schematic diagram of the overall structure of the third solution of the rope-pulling resistance device with a fixed rope outlet of the utility model;

[0027] Fig.12 This is an exploded view of the overall structure of the third solution of the rope-pulling resistance device with a fixed rope outlet of the utility model;

[0028] Fig.13 It is an axonometric view of the third solution of the winding wheel of the rope pulling resistance device with a fixed rope outlet of the utility model;

[0029] Fig.14 It is a schematic diagram of the central sliding shaft and the first transmission plate of the third solution of the rope pulling resistance device with a fixed rope outlet of the utility model;

[0030] Fig.15 This is an exploded schematic diagram of the overall structure when a sliding sleeve is added to the third solution of the rope-pulling resistance device with a fixed rope outlet of the utility model;

[0031] Fig.16 This is a schematic diagram of the overall structure of the fourth solution of the rope-pulling resistance device with a fixed rope outlet of the utility model;

[0032] Fig.17 This is an exploded view of the overall structure of the fourth solution of the rope-pulling resistance device with a fixed rope outlet of the utility model;

[0033] Fig.18 It is an axonometric view of the fourth embodiment of the winding wheel of the rope pulling resistance device with a fixed rope outlet of the utility model;

[0034] Fig.19 It is a schematic diagram of the separation of the side sliding shaft and the second transmission plate of the fourth solution of the rope pulling resistance device with a fixed rope outlet of the utility model;

[0035] Fig. 20 It is a schematic diagram of the combination of the side sliding shaft and the second transmission plate of the fourth solution of the rope pulling resistance device with a fixed rope outlet of the utility model;

[0036] In the figure: 1. mounting frame, 2. winding wheel, 3. pull rope, 4. resistance source, 5. limiter, 6. sliding shaft, 7. slideway, 8. bearing, 9. first transmission plate, 10. second transmission plate, 11. sliding sleeve, 12. cover plate; 201. spiral groove; 501. annular baffle, 601. ball groove, 602. ball; 603. first central sliding shaft, 604. first side sliding shaft, 605. second side sliding shaft; 701. first central slideway, 702. first side slideway, 703. second side slideway; 901. first central hole, 902. first side hole; 1001. second side hole, 1002. central column. DETAILED DESCRIPTION

[0037] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0038] The utility model provides a rope-pulling resistance device with a fixed rope outlet, comprising a mounting frame 1, a limiting member 5 is arranged on the mounting frame 1, a sliding shaft 6 is arranged between one end of the mounting frame 1 and the limiting member 5, a winding wheel 2 is connected to the outer surface of the sliding shaft 6, and a resistance source 4 is arranged at the other end of the mounting frame 1, and the resistance source 4 can be a device that can provide rotational torque in the prior art such as a motor or an elastic mechanism; the sliding shaft 6 passes through the limiting member 5 and is connected to the output end of the resistance source 4, and the resistance source 4 and the sliding shaft 6 transmit rotational torque to each other; a slideway 7 is arranged inside the winding wheel 2 along its length, and the winding wheel 2 is slidably connected to the sliding shaft 6 through the slideway 7, and a pull rope 3 is arranged on the winding wheel 2. A spiral groove 201 is arranged on the outer periphery of the winding wheel 2, one end of the pull rope 3 is fixed on the winding wheel 2, and the other end of the pull rope 3 is a free end, and the pull rope 3 is wound around the winding wheel 2 along the spiral groove 201. The stopper 5 cooperates with the spiral groove 201 on the outer periphery of the winding wheel 2. When the winding wheel 2 rotates, the limiting effect of the stopper 5 causes the winding wheel 2 to slide on the sliding shaft 6. The end of the sliding shaft 6 away from the resistance source 4 is connected to the mounting frame 1 through the bearing 8. The stopper 5 is a circular ring structure or an annular sleeve with internal threads. The stopper 5 is connected to the winding 2 through threads.

[0039] In the specific implementation of the above scheme, the setting of the slideway and the slide shaft can be implemented in a variety of ways. The present application is described below through examples:

[0040] Example 1

[0041] The rope-pulling resistance device with a fixed rope outlet has an overall structure such as Figure 1 and Figure 2As shown, it includes a mounting frame 1, a limiting member 5 is arranged on the mounting frame 1, a sliding shaft 6 is arranged between one end of the mounting frame 1 and the limiting member 5, a winding wheel 2 is connected to the outer surface of the sliding shaft 6, a resistance source 4 is arranged at the other end of the mounting frame 1, and the sliding shaft 6 passes through the limiting member 5 and is connected to the output end of the resistance source 4; a slideway 7 is arranged inside the winding wheel 2 along its length, and the winding wheel 2 is connected to the sliding shaft 6 through the slideway 7, and a pull rope 3 is arranged on the winding wheel 2. Figure 3 and Figure 4 As shown, a spiral groove 201 is provided on the outer periphery of the winding wheel 2, one end of the pull rope 3 is fixed on the winding wheel 2, and the other end of the pull rope 3 is a free end, and the pull rope 3 is wound around the winding wheel 2 along the spiral groove 201. Figure 6 As shown, the stopper 5 is a circular ring structure, and the stopper 5 is threadedly connected with the spiral groove 201. A bearing 8 is arranged at one end of the mounting frame 1 away from the resistance source 4.

[0042] like Figure 5 As shown, in this embodiment, the slide shaft 6 is arranged on the central axis of the winding wheel 2, the longitudinal section of the slide shaft 6 is non-circular, the shape of the slideway 7 matches the slide shaft 6, and the end of the slide shaft 6 away from the resistance source 4 is connected to the mounting frame 1 through the bearing 8. Relative to the slide shaft 6, the winding wheel 2 can slide along the slide shaft 6 but cannot rotate. In this embodiment, the resistance source 4 is set as a motor, and the limiter 5 is designed with an annular baffle 501. The annular baffle 501 keeps a certain distance from the outer peripheral contour of the winding wheel 2, and this distance is smaller than the diameter of the pull rope 3. The purpose is to use the annular baffle 501 to prevent the pull rope 3 from accidentally escaping from the corresponding spiral groove 201.

[0043] The principle of fixing the rope outlet in the present embodiment is that first, the resistance source 4 drives the sliding shaft 6 to rotate, and the sliding shaft 6 then drives the winding wheel 2 to rotate, and finally the rotational torque of the resistance source 4 is converted into a pulling force on the pull rope 3. When the pulling force of the pull rope 3 pulled by the external force is greater than the pulling force provided by the resistance source 4, the pull rope 3 will be pulled out from the winding wheel 2 circle by circle. At this time, the winding wheel 2 also rotates synchronously and screws in (or out) the limit member 5 circle by circle. Because the position of the limit member 5 is fixed, there will be a force driving the winding wheel 2 to move axially, and its movement speed is the same as the pull rope 3 being separated from the winding. The axial speed of the wheel 2 is the same, and finally the rope outlet position of the pull rope 3 is fixed when it leaves the winding wheel 2; when the tension of the pull rope 3 pulled by the external force is less than the tension provided by the resistance source 4, the pull rope 3 will be wound back on the winding wheel 2 circle by circle. At this time, the winding wheel 2 also rotates synchronously and screws out (or screws in) the limit member 5 circle by circle. Because the position of the limit member 5 is fixed, there will be a force driving the winding wheel 2 to move axially, and its movement speed is the same as the axial speed of the pull rope 3 wound back on the winding wheel 2, and finally the rope outlet position of the pull rope 3 is fixed when it is wound back on the winding wheel 2.

[0044] In this embodiment, the surfaces of the sliding shaft 6 and the slideway 7 are smoothed, have a low friction coefficient, and have sufficiently strong wear resistance. At the same time, in the actual implementation process, lubricants and / or sliding sleeves 11 can be added to ensure smooth and durable operation of the device; for the sliding shaft 6, one end is connected to the resistance source 4, and the other end is equipped with a bearing 8, and the bearing 8 is installed on the mounting frame 1, so that the sliding shaft 6 will not be suspended in the air, and the entire device will be more stable and durable.

[0045] Example 2

[0046] The rope-pulling resistance device with a fixed rope outlet has an overall structure such as Figure 7 and Figure 8 As shown, it includes a mounting frame 1, a limiting member 5 is arranged on the mounting frame 1, a sliding shaft 6 is arranged between one end of the mounting frame 1 and the limiting member 5, a winding wheel 2 is connected to the outer surface of the sliding shaft 6, a resistance source 4 is arranged at the other end of the mounting frame 1, and the sliding shaft 6 passes through the limiting member 5 and is connected to the output end of the resistance source 4; a slideway 7 is arranged inside the winding wheel 2 along its length, and the winding wheel 2 is connected to the sliding shaft 6 through the slideway 7, and a pull rope 3 is arranged on the winding wheel 2. A spiral groove 201 is arranged on the outer periphery of the winding wheel 2, one end of the pull rope 3 is fixed on the winding wheel 2, and the other end of the pull rope 3 is a free end, and the pull rope 3 is wound around the winding wheel 2 along the spiral groove 201. The limiting member 5 is a circular ring structure, and the limiting member 5 is threadedly connected to the spiral groove 201. A bearing 8 is arranged at the end of the mounting frame 1 away from the resistance source 4.

[0047] In this embodiment, the resistance source 4 is configured as a motor. Fig. 9 and Fig.10 As shown, in this embodiment, a ball groove 601 is provided on the outer wall of the sliding shaft 6 along its length, and a ball 602 is provided in the ball groove 601. The longitudinal section shape of the slideway 7 matches the outer contour after the sliding shaft 6 and the ball 602 are combined, and the winding wheel 2 is sleeved on the sliding shaft 6 through the slideway 7. The winding wheel 2 can slide along the sliding shaft 6 but cannot rotate. Of course, the scheme of this embodiment can also be reversed, and the ball groove and the ball are provided on the slideway 7, and the longitudinal section shape of the sliding shaft 6 matches the outer contour after the slideway 7 and the ball are combined. The winding wheel 2 is sleeved on the sliding shaft 6 through the slideway 7, and the winding wheel 2 can slide but cannot rotate. Compared with the sliding matching method adopted in the sliding shaft and the slideway in the embodiment 1, the rolling matching method is adopted in this embodiment, and its friction resistance may be smaller, and the device can run more smoothly. In actual application, various factors such as processing difficulty and manufacturing cost can be comprehensively considered; with the existing technical level or processing measures, the sliding matching method can also meet the application requirements.

[0048] Example 3

[0049] The overall structure of the rope resistance device with a fixed rope outlet Fig.11 and Fig.12As shown, compared with Embodiment 1 and Embodiment 2, the resistance source 4 in this embodiment is a structure capable of providing rotational torque. Fig.13 As shown, in this embodiment, the slide shaft 6 includes a first central slide shaft 603 and three first side slide shafts 604, and the slideway 7 includes a first central slideway 701 matched with the first central slide shaft 603 and a first side slideway 703 matched with the first side slide shaft 604; the first central slide shaft 603 is arranged along the central axis of the winding wheel 2, the first side slideway 702 is arranged parallel to the first central slideway 701, the first central slide shaft 603 is used in conjunction with the first central slide shaft 701, and the first side slide shaft 604 is used in conjunction with the first central slide shaft 701. The first side slide 702 is used in conjunction with the first side slide 702. In the present embodiment, a first center slide shaft 603 and three first side slide shafts 604 are provided. Under the restriction of the first side slide shaft 604, the winding wheel 2 can slide but cannot rotate relative to the first center slide shaft 603. In this case, the first center slide shaft 603 and the first side slide shaft 604 can both adopt circular optical axes, and the first center slide 701 and the first side slide 702 can also adopt circular holes. The processing of the device is simpler, and it is also more stable and smooth.

[0050] like Fig.14 As shown, in this embodiment, a first transmission plate 9 is further included, on which a first center hole 901 matching the first center sliding shaft 603 and a first side hole 902 matching the first side sliding shaft 604 are formed. One end of the first center sliding shaft 603 and the first side sliding shaft 604 are connected to the output end of the resistance source 4, and the other ends of the first center sliding shaft 603 and the first side sliding shaft 604 are respectively inserted into the first center hole 901 and the first side hole 902. The first center sliding shaft 603 passes through the first center hole 901 and is connected to the mounting frame 1 via the bearing 8. In actual use, the first center slide shaft 603 and the first transmission plate 9 can be set to a non-rotating connection, for example, the first center hole 901 of the first transmission plate 9 is set to be non-circular, and the appropriate position near the end of the first center slide shaft 603 is also set to be non-circular and adapted to the first center hole 901, so that when the output end of the resistance source 4 drives the first center slide shaft 603 to rotate, the torque can be directly transmitted to the first transmission plate 9 through the first center slide shaft 603, and then the torque is transmitted to the first side slide shaft 604 through the first transmission plate 9, and finally transmitted to the winding wheel 2, the purpose is to apply torque to both ends of the winding wheel 2, so that the torque is more balanced. For the first center slide shaft 603, one end is connected to the resistance source 4, and the other end is installed with a bearing 8 after passing through the first transmission plate 9, and the bearing 8 is installed on the mounting frame 1, so that the first center slide shaft 603 does not exist in the situation of being suspended, and the whole device is more stable and durable.

[0051] In the actual implementation process, lubricants and / or sliding sleeves 11 can also be added to ensure smooth operation and durability of the device; Fig.15As shown, a sliding sleeve 11 is arranged between the first central sliding shaft 603 and the first central slide 701, and between the first side sliding shaft 604 and the first side slide 702. The sliding sleeve 11 is made of oil-free self-lubricating engineering plastic or graphene copper sleeve. Of course, linear bearings can also be arranged to ensure smooth sliding. Rotating snap-on cover plates 12 are also arranged at both ends of the winding wheel 2. After the sliding sleeve 11 is installed on the slide of the winding wheel 2, the cover plate 12 is installed to prevent the sliding sleeve 11 from falling off during operation, which affects the smooth operation of the device.

[0052] Example 4

[0053] The rope-pulling resistance device with a fixed rope outlet has an overall structure such as Fig.16 and Fig.17 As shown, compared with Embodiment 1, Embodiment 2 and Embodiment 3, the position limiting member 5 in this embodiment is an annular sleeve, and the resistance source 4 is a motor. Fig.18 As shown, in this embodiment, the sliding shaft 6 includes three second side sliding shafts 605, and the slideway 7 includes second side sliding ways 703 whose number is the same as the second side sliding shafts 605. The three second side sliding shafts 605 are arranged in parallel, and the second side sliding shafts 605 are used in conjunction with the second side sliding ways 703. Under the restriction of the second side sliding shafts 605, the winding wheel 2 can slide along the axis direction thereof but cannot rotate.

[0054] like Fig.19 and Fig. 20 As shown, the present embodiment also includes a second transmission plate 10, on which a second side hole 1001 for use with a second side sliding shaft 605 is provided, one end of the second side sliding shaft 605 is connected to the output end of the resistance source 4, and the other end of the second side sliding shaft 605 passes through the second side hole 1001; a center column 1002 is also provided at one end of the second transmission plate 10 connected to the mounting frame 1, and the center column 1002 is connected to the mounting frame 1 through a bearing 8, so that the second side sliding shaft 605 does not exist in a suspended state, and the entire device is more stable and durable.

[0055] The utility model discloses a rope pulling resistance device with a fixed rope outlet, which cleverly utilizes the spiral groove arranged on the outer periphery of the winding wheel, and cooperates with the limit piece and the sliding shaft design, so as to effectively realize the synchronous movement of the winding wheel during the rope pulling process, which satisfies the winding space required for the long rope and also realizes the fixation of the rope outlet position. Compared with the prior art, the structure is simpler and the cost is lower, the size of the device is further reduced, and the smoothness, stability and durability are also stronger, which also makes the fitness equipment smaller and lighter, and has better applicability and practical significance.

Claims

1. The rope resistance device is fixed at the rope outlet. It is characterized in that The invention comprises a mounting frame (1), a limiting member (5) is arranged on the mounting frame (1), a sliding shaft (6) is arranged between one end of the mounting frame (1) and the limiting member (5), a winding wheel (2) is connected to the outer surface of the sliding shaft (6), a resistance source (4) is arranged at the other end of the mounting frame (1), and the sliding shaft (6) passes through the limiting member (5) and is connected to the output end of the resistance source (4); A slideway (7) is arranged inside the winding wheel (2) along its length, the winding wheel (2) is connected to the sliding shaft (6) via the slideway (7), and a pull rope (3) is arranged on the winding wheel (2).

2. The rope-pulling resistance device with a fixed rope outlet according to claim 1, It is characterized in that The outer periphery of the winding wheel (2) is provided with a spiral groove (201); one end of the pull rope (3) is fixed on the winding wheel (2); the other end of the pull rope (3) is a free end; the pull rope (3) is wound around the winding wheel (2) in turns along the spiral groove (201).

3. The rope-pulling resistance device with a fixed rope outlet according to claim 2, It is characterized in that The limiting member (5) is a circular ring structure or an annular sleeve with an internal thread, and the limiting member (5) is threadedly connected to the spiral groove (201).

4. The rope-pulling resistance device with a fixed rope outlet according to claim 3, It is characterized in that A bearing (8) is provided at one end of the mounting frame (1) away from the resistance source (4).

5. The rope-pulling resistance device with a fixed rope outlet according to claim 4, It is characterized in that The slide shaft (6) is arranged on the central axis of the winding wheel (2), the longitudinal section of the slide shaft (6) is non-circular, the shape of the slideway (7) matches the slide shaft (6), and the end of the slide shaft (6) away from the resistance source (4) is connected to the mounting frame (1) through a bearing (8).

6. The rope-pulling resistance device with a fixed rope outlet according to claim 4, It is characterized in that A ball groove (601) is provided on the outer wall of the sliding shaft (6) along its length, and a ball (602) is provided in the ball groove (601). The longitudinal cross-sectional shape of the slideway (7) matches the outer contour of the sliding shaft (6) and the ball (602) after being combined. The end of the sliding shaft (6) away from the resistance source (4) is connected to the mounting frame (1) through a bearing (8).

7. The rope-pulling resistance device with a fixed rope outlet according to claim 4, It is characterized in that The slide shaft (6) comprises a first central slide shaft (603) and a first side slide shaft (604); the slideway (7) comprises a first central slideway (701) matched with the first central slide shaft (603) and a first side slideway (702) matched with the first side slide shaft (604); the first central slideway (701) is arranged along the central axis of the winding wheel (2); the first side slideway (702) is arranged parallel to the first central slideway (701); the first central slide shaft (603) is used in conjunction with the first central slide shaft (701); the first side slide shaft (604) is used in conjunction with the first side slide shaft (702); the number of the first central slide shaft (603) is one; the number of the first side slide shafts (604) is not less than one, and the number of the first side slide shafts (604) and the number of the first side slide shafts (702) correspond one to one.

8. The rope-pulling resistance device with a fixed rope outlet according to claim 7, It is characterized in that A first transmission plate (9) is also provided at one end of the winding wheel (2) away from the limiting member (5); a first center hole (901) matching the first center sliding shaft (603) and a first side hole (902) matching the first side sliding shaft (604) are provided on the first transmission plate (9); one end of the first center sliding shaft (603) and the first side sliding shaft (604) are both connected to the output end of the resistance source (4); the other ends of the first center sliding shaft (603) and the first side sliding shaft (604) are respectively inserted into the first center hole (901) and the first side hole (902); the first center sliding shaft (603) passes through the first center hole (901) and is connected to the mounting frame (1) via a bearing (8).

9. The rope-pulling resistance device with a fixed rope outlet according to claim 4, It is characterized in that The sliding shaft (6) includes a plurality of second side sliding shafts (605), and the slideway (7) includes a second side sliding shaft (703) whose number is the same as that of the second side sliding shafts (605). The plurality of second side sliding shafts (605) are arranged in parallel, and the second side sliding shafts (605) are used in conjunction with the second side sliding shafts (703).

10. The rope-pulling resistance device with a fixed rope outlet according to claim 9, It is characterized in that A second transmission plate (10) is further provided at one end of the winding wheel (2) away from the limiting member (5); a second side hole (1001) for use with a second side sliding shaft (605) is provided on the second transmission plate (10); one end of the second side sliding shaft (605) is connected to the output end of the resistance source (4), and the other end of the second side sliding shaft (605) passes through the second side hole (1001); A center column (1002) is also provided at one end of the second transmission plate (10) connected to the mounting frame (1), and the center column (1002) is connected to the mounting frame (1) via a bearing (8); The number of the second side sliding shafts (605) is not less than 2, and the number of the second side sliding shafts (605), the second side holes (1001) and the second side sliding tracks (703) corresponds one to one.

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