Skipping rope

Abstract

This invention relates to the field of jump rope counting. The provided jump rope includes a handle and a soft rope. The handle includes a housing, a rotating shaft, and a detection device. The rotating shaft is rotatably mounted inside the housing, and the soft rope is connected to the rotating shaft. The detection device includes a permanent magnet and a magnetic sensor. The magnetic sensor is fixed to the housing, and the permanent magnet is fixed to the rotating shaft. The magnetic poles of the permanent magnet can be sensed by the magnetic sensor when they rotate close to it. There are at least two magnetic poles, and each magnetic pole is non-uniformly distributed along the circumferential direction of the rotating shaft. The interval between the magnetic sensor sensing each magnetic pole is a first duration. The detection device determines the rotation direction of the rotating shaft and / or whether to count based on the trend matching between the size distribution of the sequentially distributed first durations and the size distribution of the central angles of the intervals of the sequentially distributed magnetic poles along the circumferential direction. The jump rope of this invention has a simple structure, is economical, counts accurately, and can identify the forward and reverse directions of the jump rope movement.

Description

Technical Field

[0001] This invention relates to the field of jump rope counting, and more specifically to a jump rope. Background Technology

[0002] Existing jump ropes often use Hall sensors to sense permanent magnets to achieve counting. In order to detect the direction of the jump rope, some existing technologies use two or more Hall sensors. For example, Chinese invention patent application CN112337036A discloses an electronic jump rope counting device. This scheme uses two Hall switches (switch-type Hall sensors) to sense a magnet to improve counting accuracy and can identify the positive and negative directions of the jump rope movement.

[0003] However, this solution, which uses two Hall switches, is relatively expensive.

[0004] In addition, Chinese invention patent application with publication number CN112090020A discloses a linear Hall sensor-type counting module and a corresponding counter and jump rope. This solution distinguishes between forward and reverse rotation by detecting whether the linear signal is from the N pole to the S pole or from the S pole to the N pole, which can improve the counting accuracy and determine the forward and reverse rotation. Moreover, this solution only uses one linear Hall sensor.

[0005] However, the cost of using linear Hall sensors is significantly higher than that of switching Hall sensors. In particular, linear Hall sensors require more external circuitry when in use, which further increases the cost of the solution and makes it less economical. Summary of the Invention

[0006] The purpose of this invention is to provide a jump rope that is simple in structure, economical, accurate in counting, and capable of identifying the forward and reverse directions of the jump rope movement.

[0007] To achieve the above objectives, the jump rope provided by the present invention includes a handle and a soft rope. The handle includes a housing, a rotating shaft, and a detection device. The rotating shaft is rotatably installed inside the housing, and the soft rope is connected to the rotating shaft. The detection device includes a permanent magnet and a magnetic sensor. The magnetic sensor is fixed to the housing, and the permanent magnet is fixed to the rotating shaft. The magnetic poles of the permanent magnet can be sensed by the magnetic sensor when they rotate to be close to it. The number of magnetic poles is at least two, and each magnetic pole is non-uniformly distributed along the circumferential direction of the rotating shaft. The interval between the magnetic sensor sensing each magnetic pole is a first duration. The detection device determines the rotation direction of the rotating shaft and / or whether to count based on the trend matching between the size distribution of each first duration and the size distribution of the central angle of the interval between each magnetic pole distributed along the circumferential direction.

[0008] As can be seen from the above, with each rotation of the shaft of the present invention, the magnetic sensor detects the induced magnetic poles more than twice. Furthermore, the detection device determines the rotation direction of the shaft and / or whether to count based on the trend matching between the distribution pattern of the magnitudes of the sequentially distributed first durations and the distribution pattern of the magnitudes of the central angles of the intervals of the sequentially distributed induced magnetic poles along the circumferential rotation. This is beneficial for improving counting accuracy and for recognizing the forward and reverse directions of the jump rope movement. In addition, the present invention can achieve the above functions with a single magnetic sensor. The jump rope structure is simple, and the magnetic sensor of the present invention has a wide range of options. The magnetic sensor of the present invention does not need to be a linear sensor, but can use a lower-cost switching sensor, which is beneficial for improving the economy of the jump rope.

[0009] The trend of the size distribution pattern of each first duration in the sequential distribution represents the proportional relationship of the size of each first duration in the sequential distribution. Similarly, the trend of the size distribution pattern of each central angle of the interval in the sequential distribution along the rotation circumference represents the proportional relationship of the size of each central angle of the interval in the sequential distribution.

[0010] It should be noted that regarding the distribution of each induced magnetic pole in the circumferential direction, as long as the size of each interval central angle is not equal, the distribution of each induced magnetic pole in the circumferential direction is "non-uniform distribution". For example, when there are three interval central angles, two of the interval central angles are equal in size, but are not equal in size to the other interval central angle. In this case, the distribution of each induced magnetic pole in the circumferential direction is also "non-uniform distribution".

[0011] A preferred embodiment is that when the size distribution pattern of each first duration in a sequential distribution matches the trend of a first preset pattern, the detection device confirms that the rotating shaft is rotating in reverse and counts the number of cycles of the first duration as the number of reverse rotations of the rope skipping motion; when the size distribution pattern of each first duration in a sequential distribution matches the trend of a second preset pattern, the detection device confirms that the rotating shaft is rotating in the forward direction and counts the number of cycles of the first duration as the number of forward rotations of the rope skipping motion; the first preset pattern is the size distribution pattern of the central angle of the interval between each induction magnetic pole sequentially distributed along the forward rotation direction of the rotation, and the second preset pattern is the size distribution pattern of the central angle of the interval between each induction magnetic pole sequentially distributed along the reverse rotation direction of the rotation.

[0012] It should be noted that the above descriptions of "forward rotation" and "reverse rotation" only distinguish between the two rotation directions, and do not specifically define "forward rotation" and "reverse rotation".

[0013] A further scheme is that, in a predetermined number of sequentially distributed first durations, when the distribution pattern of the proportion of each first duration matches the third predetermined pattern, it indicates that the size distribution pattern of each first duration in the sequential distribution matches the trend of the first predetermined pattern; when the distribution pattern of the proportion of each first duration matches the fourth predetermined pattern, it indicates that the size distribution pattern of each first duration in the sequential distribution matches the trend of the second predetermined pattern; the predetermined number is the number of induced magnetic poles, the third predetermined pattern is the distribution pattern of the periodic proportion of the interval central angle of each induced magnetic pole along the forward direction of rotation, and the fourth predetermined pattern is the distribution pattern of the periodic proportion of the interval central angle of each induced magnetic pole along the reverse direction of rotation.

[0014] The periodicity of the interval central angle is the proportion of that interval central angle to the entire 360° circumference.

[0015] Of course, when the detection device confirms that the rotating shaft rotates one revolution in the forward direction, it counts one rope skipping motion in the forward direction, and when it confirms that the rotating shaft rotates one revolution in the reverse direction, it counts one rope skipping motion in the reverse direction. If the distribution pattern of the proportion of each first duration does not match the third preset pattern or the fourth preset pattern, then the detection device will not count, which is beneficial to improving the accuracy of rope skipping motion counting and realizing the identification of the forward and reverse directions of rope skipping motion.

[0016] The forward rotation direction and the reverse rotation direction of the circumferential direction are two opposite directions of the circumferential direction, such as the clockwise direction and the counterclockwise direction in the embodiments of the present invention.

[0017] Another preferred embodiment is that the magnetic sensor is a bipolar sensor, with at least two of the two sensing magnetic poles being a first magnetic pole and a second magnetic pole, respectively. The direction of the magnetic field sensed by the bipolar sensor for the first magnetic pole is opposite to the direction of the magnetic field sensed by the bipolar sensor for the second magnetic pole. The detection device determines the rotation direction of the rotating shaft and / or whether to count based on the polarity of each sensing magnetic pole sensed by the magnetic sensor and the trend matching between the distribution pattern of the magnitude of each first duration sequentially distributed and the distribution pattern of the magnitude of the central angle of the interval of each sensing magnetic pole sequentially distributed along the circumferential direction of rotation.

[0018] Different directions of the magnetic field sensed by a bipolar sensor indicate different polarities of the induced magnetic poles sensed by the bipolar magnetic sensor.

[0019] As can be seen from the above, a bipolar sensor is a magnetic sensor that can sense both the N pole and the S pole. In this way, the present invention can set the number of sensing magnetic poles to two, which is beneficial to reducing the number of sensing magnetic poles, reducing the number of permanent magnets, and further simplifying the structure of the jump rope.

[0020] A further proposed solution is to use a single permanent magnet, with its two magnetic poles distributed along the circumferential direction of rotation, and both magnetic poles being induced magnetic poles.

[0021] Another preferred embodiment is that the number of induced magnetic poles is at least three, and the distribution pattern of the central angle of the interval between each induced magnetic pole along the circumferential rotation direction is different from the distribution pattern along the reverse direction of the circumferential rotation direction.

[0022] The distribution pattern of the central angles of the intervals of each induced magnetic pole along the forward rotation direction is different from the distribution pattern along the reverse rotation direction: that is, any period in which the central angles of each interval are sequentially distributed along the forward rotation direction is different from any period in which they are sequentially distributed along the reverse rotation direction.

[0023] Another preferred embodiment is that the rotating shaft and the magnetic sensor are spaced apart along the axial direction of the rotating shaft, and the permanent magnet is fixed at the end of the rotating shaft near the magnetic sensor along the axial direction of the rotating shaft.

[0024] As can be seen from the above, this eliminates the need to make the circuit board an irregular shape, which helps to simplify the structure of the circuit board and the structure of the jump rope.

[0025] A further option is to fix the permanent magnet to the end face of the shaft.

[0026] As can be seen from the above, this helps to reduce the difficulty of installing the permanent magnet and the rotating shaft.

[0027] A further option is that the detection device also includes a circuit board, on which a magnetic sensor is mounted. The circuit board and the rotating shaft are spaced apart along the axial direction, and the circuit board is a rectangular plate.

[0028] As can be seen from the above, this helps to improve the versatility of the circuit board and enhance the economy of the jump rope of this invention.

[0029] Another preferred option is that the magnetic sensor is a switch-type sensor, specifically a Hall sensor.

[0030] As can be seen from the above, the switching sensor is less expensive than the linear sensor, which helps to improve the economy of the jump rope of this invention. Attached Figure Description

[0031] Figure 1 This is a partial structural diagram of the first embodiment of the jump rope of the present invention.

[0032] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0033] Figure 3 This is a schematic diagram of the permanent magnet being installed on the end face of the rotating shaft in the first embodiment of the jump rope of the present invention.

[0034] Figure 4This is a schematic diagram of the output signal of the switch-type Hall sensor when the rotating shaft rotates counterclockwise in the first embodiment of the jump rope of the present invention.

[0035] Figure 5 This is a schematic diagram of the output signal of the switch-type Hall sensor when the rotating shaft rotates clockwise in the first embodiment of the jump rope of the present invention.

[0036] Figure 6 This is a schematic diagram of a bar magnet installed on the end face of a rotating shaft according to the second embodiment of the jump rope of the present invention.

[0037] Figure 7 This is a schematic diagram of the output signal of the switch-type Hall sensor when the rotating shaft rotates counterclockwise in the second embodiment of the jump rope of the present invention.

[0038] Figure 8 This is a schematic diagram of the output signal of the switch-type Hall sensor when the rotating shaft rotates clockwise in the second embodiment of the jump rope of the present invention.

[0039] Figure 9 This is a schematic diagram of a bar magnet installed on the end face of a rotating shaft in an optional embodiment of the second embodiment of the jump rope of the present invention. Detailed Implementation

[0040] First Embodiment

[0041] The jump rope in this embodiment includes a soft rope (not shown in the figure) and two handles. The soft rope is connected between the two handles. Please refer to [the figure]. Figure 1 and Figure 2 The handle includes a housing 1, a rotating shaft 2, and a bearing 3. The rotating shaft 2 is rotatably mounted inside the housing 1 via the bearing 3. One axial end of the rotating shaft 2 extends out of the housing 1, and the end of the rotating shaft 2 extending out of the housing 1 is connected to a soft rope. When using the jump rope of this embodiment for jump rope exercise, the rotating shaft 2 rotates synchronously with the soft rope under the drive of the soft rope.

[0042] Specifically, the housing 1 includes a first half-shell 11 and a second half-shell (not shown in the figure). During assembly and production, the rotating shaft 2, bearing 3, detection device 4 (described later), and battery are first installed on the first half-shell 11, and then the first half-shell 11 is fitted and installed with the second half-shell.

[0043] One of the handles also includes a detection device 4 and a battery (not shown in the figure). The detection device 4 and the battery are both located inside the housing 1 of the corresponding handle. The battery powers the detection device 4. The detection device 4 includes a circuit board 41, a switch-type Hall sensor 42 (an example of a magnetic sensor) and three permanent magnets 43. The battery and the circuit board 41 are fixedly connected to the housing 1. The rotating shaft 2 and the circuit board 41 are spaced apart along the axial direction of the rotating shaft 2. The switch-type Hall sensor 42 and the rotating shaft 2 are spaced apart along the axial direction of the rotating shaft 2. Along the axial direction of the rotating shaft 2, the circuit board 41 is located on the side of the rotating shaft 2 away from the soft rope. The three permanent magnets 43 are all fixed on the end face of the rotating shaft 2 near the end of the circuit board 41. The switch-type Hall sensor 42 is fixed on the end of the circuit board 41 near the end of the rotating shaft 2.

[0044] Three permanent magnets 43 are distributed circumferentially along the rotation axis 2. The magnetization direction of the permanent magnets 43 is along the axial direction of the rotation axis 2. Along the axial direction of the rotation axis 2, the position of the switch-type Hall sensor 42 corresponds to the rotation path of the permanent magnets 43. The magnetic pole of the permanent magnet 43 near the switch-type Hall sensor 42 is the inductive magnetic pole. The inductive magnetic pole of the permanent magnet 43 can be sensed by the switch-type Hall sensor 42 when it rotates and approaches the switch-type Hall sensor 42. The polarities of the inductive magnetic poles of the three permanent magnets 43 are the same.

[0045] Please refer to Figure 3Along the circumference of the axis of rotation 2, the central angles of the intervals between the three permanent magnets 43, in a clockwise direction as shown in the diagram (an example of the forward rotation direction of the circumference), are 60°, 120°, and 180° (an example of one cycle of the first preset rule). The periodic proportion of the interval central angle is the proportion of that interval central angle to the entire circumference angle of 360° (one cycle), that is, the distribution pattern of the periodic proportion of the interval central angles of the three permanent magnets 43 in a clockwise direction as shown in the diagram is a cycle of 1 / 6, 1 / 3, 1 / 2 (an example of the third preset rule). One cycle of the distribution pattern of the periodic proportion of the interval central angles of the three permanent magnets 43 in a clockwise direction as shown in the diagram may be 1 / 6, 1 / 3, 1 / 2 or 1 / 3, 1 / 2, 1 / 6 or 1 / 2, 1 / 6, 1 / 3; similarly, the three permanent magnets 4 The periodic proportion of the central angles of the three permanent magnets 43 distributed in a counterclockwise direction (an example of the reverse direction of the rotational circumference) in a cycle of 1 / 2, 1 / 3, 1 / 6 (an example of the fourth preset rule). One of the periods of the periodic proportion of the central angles of the three permanent magnets 43 distributed in a counterclockwise direction in the figure may be 1 / 2, 1 / 3, 1 / 6 or 1 / 3, 1 / 6, 1 / 2 or 1 / 6, 1 / 2, 1 / 3. Any period of the periodic proportion of the central angles of the three permanent magnets 43 distributed in a clockwise direction is different from any period of the periodic proportion of the central angles of the three permanent magnets 43 distributed in a counterclockwise direction. The distribution pattern of the central angles of the three permanent magnets 43 distributed in a counterclockwise direction is different from the distribution pattern of the central angles of the three permanent magnets 43 distributed in a clockwise direction.

[0046] Due to the difference in the distribution patterns of the central angles of the three permanent magnets 43 along the clockwise and counterclockwise directions, the distribution patterns of the interval durations of each induced magnetic pole sensed by the switch-type Hall sensor 42 also exhibit similar differences when the rotating shaft 2 rotates clockwise and counterclockwise as shown in the diagram. Therefore, this embodiment can utilize the distribution patterns of the proportion of interval durations of each induced magnetic pole detected by the switch-type Hall sensor 42 and the distribution patterns of the period proportions of each central angle along the circumferential direction of rotation to determine the rotation direction of the rotating shaft 2, thereby determining the direction of the rope's movement and the forward and reverse directions of the jump rope motion; specifically, please refer to... Figure 4 and Figure 5 , Figure 4 and Figure 5 The presence of a pulse indicates that the switch-type Hall sensor 42 has sensed the magnetic pole, for example, when the switch-type Hall sensor 42... Figure 4 The induced magnetic poles are sensed at times t0, t0+t1, t0+3t1, t0+6t1...t0+12t1. For example, the switch-type Hall sensor 42... Figure 5The induced magnetic poles are sensed at times t0, t0+3t1, t0+5t1, t0+6t1...t0+12t1. The first time interval is defined as the time interval between the detection of each induced magnetic pole by the switch-type Hall sensor 42. Please refer to... Figure 4 , Figure 4 The diagram shows six sequentially distributed first durations. The percentage of each first duration is the proportion of that first duration to the sum of the corresponding three (a preset number of instances) first durations. The distribution pattern of the percentages of any three sequentially distributed first durations could be 1 / 6, 1 / 3, 1 / 2, or 1 / 3, 1 / 2, 1 / 6, or 1 / 2, 1 / 6, 1 / 3, that is... Figure 4 The distribution pattern of the proportion of each first duration shown matches the third preset pattern. In this embodiment, the detection device 4 outputs the switch-type Hall sensor 42. Figure 4 When the signal shown is received, confirm that the rotating shaft 2 is moving along... Figure 3 Rotate the rope counterclockwise twice as shown, ensuring it swings twice in a counterclockwise direction, and count the two jump rope movements in the reverse direction; also, please refer to... Figure 5 , Figure 5 The distribution pattern of the proportion of the first duration in any three sequential distributions shown could be 1 / 2, 1 / 3, 1 / 6 or 1 / 3, 1 / 6, 1 / 2 or 1 / 6, 1 / 2, 1 / 3, that is... Figure 5 The distribution pattern of the proportion of each first duration shown matches the fourth preset pattern. In this embodiment, the detection device 4 outputs the switch-type Hall sensor 42. Figure 5 When the signal shown is received, confirm that the rotating shaft 2 is along Figure 3 Rotate the rope two full turns clockwise as shown, confirming that the rope swings twice in a clockwise direction, and count the two jump rope movements in the forward direction.

[0047] Since the rotation speed of the rotating shaft 2 is not necessarily uniform during rope skipping, the sequential distribution of the proportion of each first duration may still differ from the sequential distribution of the period proportion of each interval central angle during normal rope skipping. Therefore, this embodiment allows a deviation of less than 1 / 10 for the proportion of each first duration. Specifically, the distribution of the proportions of the three sequentially distributed first durations satisfies 1 / 6*(1±1 / 10), 1 / 3*(1±1 / 10), 1 / 2*(1±1 / 10) or 1 / 3*(1±1 / 10), 1 / 2*(1±1 / 10), 1 / 6*(1±1 / 10) or 1 / 2*(1±1 / 10), 1 / 6*(1±1 / 10) When the ratio is 1 / 3*(1±1 / 10), it is determined to match the third preset rule; similarly, when the distribution rule of the proportion of the first duration in the three sequential distributions satisfies 1 / 2*(1±1 / 10), 1 / 3*(1±1 / 10), 1 / 6*(1±1 / 10) or 1 / 3*(1±1 / 10), 1 / 6*(1±1 / 10), 1 / 2*(1±1 / 10) or 1 / 6*(1±1 / 10), 1 / 2*(1±1 / 10), 1 / 3*(1±1 / 10), it is confirmed to match the fourth preset rule; alternatively, in other embodiments of the present invention, the deviation of the proportion of the first duration can also be adjusted, for example, the allowable deviation of the proportion of the first duration can be adjusted to within 1 / 5.

[0048] Specifically, the detection device 4 also includes a processor, a display screen, and a communication unit. The display screen, the communication unit, and the Hall sensor are all electrically connected to the processor. The processor is used to calculate and process the signal output by the switch-type Hall sensor 42 to obtain the forward and reverse rotation and counting status of the jump rope movement. The display screen is used to display the calculation results of the processor. The communication unit is used to connect with an external smart device so that the forward and reverse rotation and counting status of the jump rope movement can be understood through the smart device. The configuration of the processor, display screen, and communication unit can refer to the existing technology and will not be described in detail here.

[0049] It should be noted that in this embodiment, clockwise and counterclockwise are only used to distinguish and describe two opposite directions of rotation, and do not define a certain direction of rotation as necessarily clockwise or counterclockwise.

[0050] Alternatively, in other embodiments of the present invention, the number of permanent magnets 43 may exceed three. As long as the distribution pattern of the central angle of the interval of each permanent magnet 43 in the clockwise direction is different from the distribution pattern of the central angle of the interval of each permanent magnet 43 in the counterclockwise direction, it can be ensured that the distribution pattern of the period ratio of the central angle of the interval of each permanent magnet 43 in the counterclockwise direction is different from the distribution pattern of the period ratio of the central angle of the interval of each permanent magnet 43 in the clockwise direction. This ensures that the distribution pattern of the size of each central angle distributed in the clockwise direction is different from the distribution pattern of the size of each central angle distributed in the counterclockwise direction. In this way, the detection device can determine whether the jump rope is being used for normal jump rope exercise based on the matching trend of the distribution pattern of the size of each interval duration in sequence and the distribution pattern of the size of each central angle in sequence along the rotation circumference, thereby determining whether to count, determining the rotation direction of the shaft, and determining the direction of the jump rope exercise.

[0051] For example, the distribution pattern of the size of the central angles of each interval distributed in a clockwise direction is the first preset pattern, and the distribution pattern of the size of the central angles of each interval distributed in a counterclockwise direction is the second preset pattern. When the distribution pattern of the size of each first duration distributed in sequence matches the trend of the first preset pattern, the detection device confirms that the rotating shaft is reversed and counts the number of cycles of the first duration during this period as the number of reverse rotations of the rope skipping motion. Similarly, when the distribution pattern of the size of each first duration distributed in sequence matches the trend of the second preset pattern, the detection device confirms that the rotating shaft is rotating forward and counts the number of cycles of the first duration during this period as the number of forward rotations of the rope skipping motion.

[0052] The trend of the size distribution pattern of each first duration in the sequential distribution represents the proportional relationship between the sizes of each first duration in the sequential distribution. Similarly, the trend of the size distribution pattern of each interval central angle represents the proportional relationship between the sizes of each interval central angle in the sequential distribution along the circumferential direction. In this embodiment, the trend of the size distribution pattern of each first duration in the sequential distribution is represented by the proportion of each first duration in the sequential distribution to the sum of a preset number of first durations. Furthermore, the trend of the size distribution pattern of each interval central angle in the sequential distribution along the circumferential direction is represented by the proportion of each interval central angle to 360°. Alternatively, in other embodiments of the present invention, the trend of the size distribution pattern of each first duration in the sequential distribution can also be represented by the proportion of each first duration in the first first duration within the period.

[0053] Alternatively, in other embodiments of the present invention, the switch-type Hall sensor 42 can be replaced by other magnetic sensors, as long as the magnetic sensor can sense each induced magnetic pole. Of course, it is preferred that the magnetic sensor is a Hall sensor, and it is even more preferred that the magnetic sensor is a switch-type sensor. More preferably, the magnetic sensor is the switch-type Hall sensor 42 of this embodiment, which helps to reduce the cost of the magnetic sensor and improve the economy of rope skipping.

[0054] Compared to existing jump ropes, the jump rope of this embodiment has many advantages. In terms of function and performance, on the one hand, for each rotation of the rotating shaft 2 in this embodiment, the switch-type Hall sensor 42 senses the induction magnetic pole three times. The detection device 4 counts the jump rope movement once when the distribution pattern of the proportion of the three sequentially distributed intervals meets the preset requirements (third preset pattern / fourth preset pattern), which helps to improve the accuracy of counting the jump rope movement. On the other hand, since the distribution pattern of the central angle of the interval of each permanent magnet 43 in the clockwise direction is different from that in the counterclockwise direction... The distribution pattern of the intervals between the induction magnetic poles detected by the switch-type Hall sensor 42 when the shaft 2 rotates forward is different from that when the shaft 2 rotates in reverse. Therefore, the forward and reverse rotation of the shaft 2 can be determined by matching the trend of the distribution pattern of the intervals between the induction magnetic poles detected by the switch-type Hall sensor 42 with the distribution pattern of the central angles of the intervals distributed sequentially along the circumferential direction of rotation. This, in turn, determines the direction of the rope's movement and the forward and reverse directions of the jump rope motion.

[0055] Furthermore, in terms of structure and cost, this embodiment uses a switch-type Hall sensor 42 and three permanent magnets 43 to achieve accurate counting and identification of the direction of the soft rope's movement. Compared with CN112337036A, this embodiment uses fewer Hall sensors, resulting in lower cost and better economic efficiency. Compared with CN112090020A, the cost of using the switch-type Hall sensor 42 is significantly lower than that of using the linear Hall sensor. This embodiment is therefore lower in cost and more economical.

[0056] Furthermore, since the rotation paths of the switch-type Hall sensor 42 and the permanent magnet 43 are spaced apart along the axial direction of the rotating shaft 2, the circuit board 41 of this embodiment can be set as a rectangular plate instead of an irregularly shaped plate (some prior art sets the magnetic sensor and the permanent magnet radially spaced along the rotating shaft, which requires the circuit board to partially protrude and extend radially outward from the rotating shaft, thus requiring the circuit board to be an irregularly shaped plate). This improves the versatility of the circuit board 41, reduces its cost, and further enhances the economy of the jump rope in this embodiment. Moreover, compared to the solution of installing the permanent magnet 43 on the side wall of the rotating shaft 2, it is less difficult to install the permanent magnet 43 on the end face of the rotating shaft 2 in this embodiment.

[0057] Second Embodiment

[0058] Please refer to Figures 6 to 9 In this embodiment, the magnetic sensor is a bipolar switch type Hall sensor. Please refer to... Figure 6 In this embodiment, there is one permanent magnet, which is a bar magnet 43'. The bar magnet 43' is fixed on the end face 21' of the rotating shaft 2'. The two magnetic poles (an example of induction magnetic poles) of the bar magnet 43' are the first magnetic pole 431' and the second magnetic pole 432'. The first magnetic pole 431' is the N pole and the second magnetic pole 432' is the S pole. The first magnetic pole 431' and the second magnetic pole 432' are distributed along the circumferential direction of the rotating shaft 2'. Both the first magnetic pole 431' and the second magnetic pole 432' can be sensed by the bipolar switch type Hall sensor when they rotate to be close to it. The direction of the magnetic field sensed by the bipolar switch type Hall sensor for the first magnetic pole 431' is opposite to the direction of the magnetic field sensed by the bipolar switch type Hall sensor for the second magnetic pole 432'. Thus, the output signal of the bipolar switch type Hall sensor when it senses the first magnetic pole 431' is different from the output signal when it senses the second magnetic pole 432'.

[0059] Specifically, please refer to Figure 7 and Figure 8 The bipolar switch type Hall sensor in this embodiment has a latching function. When it senses the first magnetic pole 431', its output signal changes from a low level to a high level and remains there. For example... Figure 7 At times t0', t0'+4t1', and t0'+8t1', and when the second magnetic pole 432' is sensed, the output signal changes from high level to low level and remains there, for example... Figure 7 The times shown are t0'+t1', t0'+5t1', and t0'+9t1'. Alternatively, in other embodiments of the present invention, the bipolar switch type Hall sensor may not have a latching function. In this scheme, the bipolar switch type Hall sensor outputs pulse signals from different pins when it senses the first magnetic pole 431' and the second magnetic pole 432'.

[0060] The first magnetic pole 431' and the second magnetic pole 432' are non-uniformly distributed along the rotational circumference of the axis 2'. For details, please refer to... Figure 6 In this embodiment, the two central angles between the first magnetic pole 431' and the second magnetic pole 432' are 90° and 270°, respectively. Alternatively, in other embodiments of the present invention, the central angles between the first magnetic pole 431' and the second magnetic pole 432' can also be adjusted, for example, the two central angles can be 60° and 300°, or for example, 120° and 240°.

[0061] Please refer to Figure 6 Starting from the first magnetic pole 431' and looking clockwise, the size distribution pattern of the two sequentially distributed interval central angles is 90° followed by 270°, and the period ratio distribution pattern of the two sequentially distributed interval central angles is 1 / 4 followed by 3 / 4 (an example of the third preset pattern); starting from the first magnetic pole 431' and looking clockwise, the size distribution pattern of the two sequentially distributed interval central angles is 270° followed by 90°, and the period ratio distribution pattern of the two sequentially distributed interval central angles is 3 / 4 followed by 1 / 4 (an example of the fourth preset pattern).

[0062] Please refer to Figure 7 and Figure 8 In this embodiment, the detection device determines the rotation direction of the rotating shaft 2' and / or whether to count based on the polarity of each sensing magnetic pole sensed by the bipolar switch type Hall sensor (the bipolar switch type Hall sensor senses the first magnetic pole 431' when the output signal changes from low level to high level, and the bipolar switch type Hall sensor senses the second magnetic pole 432' when the output signal changes from high level to low level), and the trend matching of the size distribution pattern of the two sequentially distributed interval durations with the size distribution pattern of the two sequentially distributed interval central angles along the rotation circumference.

[0063] Specifically, please refer to Figure 7 The detection device starts by detecting the first magnetic pole 431' (when the output signal changes from low to high level) using a bipolar switch-type Hall sensor. If the distribution pattern of the interval durations of the two sequential distributions matches the pattern of 1 / 4 followed by 3 / 4 (a third preset pattern), then it confirms that the rotating shaft 2' rotates one full circle counterclockwise, which counts as one jump rope movement in the reverse direction. Similarly, please refer to... Figure 8 The detection device starts from the first magnetic pole 431' (when the output signal changes from low level to high level) sensed by the bipolar switch type Hall sensor. If the distribution pattern of the interval duration of the two sequential distributions matches the pattern of 3 / 4 followed by 1 / 4 (fourth preset pattern), then it confirms that the rotating shaft 2' rotates one revolution in the clockwise direction, which counts as one jump rope movement in the forward direction.

[0064] Similar to the first embodiment, since the rotation speed of the rotating shaft 2' is not necessarily uniform during the rope skipping exercise, this embodiment allows the distribution pattern of the proportion of each interval duration in the sequential distribution to deviate by a certain proportion compared with the third preset pattern / fourth preset pattern, for example, a deviation within 1 / 10, or a deviation within 1 / 5. The distribution pattern of the proportion of the interval duration in the two sequential distributions is also considered to match the preset pattern within the allowable deviation range.

[0065] Alternatively, in other embodiments of the present invention, the detection device may also use a bipolar switch type Hall sensor to sense the distribution pattern of the proportion of two intervals in the comparison sequence starting from the second magnetic pole 432'. Of course, the third and fourth preset rules for comparison in this scheme are opposite to those in this embodiment.

[0066] Alternatively, please refer to Figure 9 In other embodiments of the present invention, there are two permanent magnets 43'', both of which are fixed on the end face 21'' of the rotating shaft 2''. The magnetization direction of the two permanent magnets 43'' is along the axial direction of the rotating shaft 2''. The two permanent magnets 43'' are non-uniformly distributed along the circumferential direction of the rotating shaft 2''. For example, in this embodiment, one central angle between the two permanent magnets 43'' is 90° and the other central angle is 270°. The two permanent magnets 43'' are respectively the first magnet 431'' and the second magnet 432''. Along the axial direction of the rotating shaft 2', the rotation path of the N pole of the first magnet 431'' is towards the bipolar switch type Hall sensor, and the rotation path of the S pole of the second magnet 432'' is towards the bipolar switch type Hall sensor. Of course, it is preferable to adopt the scheme of setting only one strip magnet 43' in this embodiment, which is beneficial to reducing the number of permanent magnets and improving the economy of the jump rope.

[0067] The other parts of this embodiment are the same as those in the first embodiment.

[0068] Finally, it should be emphasized that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A jump rope, comprising a handle and a soft rope, the handle comprising a housing, a pivot, and a detection device, the pivot being rotatably mounted within the housing, and the soft rope being connected to the pivot; Its features are: The detection device includes a permanent magnet and a magnetic sensor. The magnetic sensor is fixed to the housing, and the permanent magnet is fixed to the rotating shaft. The magnetic poles of the permanent magnet can be sensed by the magnetic sensor when they rotate to be close to the magnetic sensor. The magnetic poles are non-uniformly distributed along the circumferential direction of the rotating shaft. The number of the induction magnetic poles is at least three. Along the circumferential rotation, the distribution pattern of the central angle of the interval between the induction magnetic poles along the forward rotation direction is different from the distribution pattern along the reverse rotation direction. The magnetic sensor senses the interval between each of the inductive magnetic poles as a first duration. The detection device determines the rotation direction of the rotating shaft and / or whether to count based on the trend matching between the size distribution of each of the first durations in sequence and the size distribution of the central angle of the interval between each of the inductive magnetic poles in sequence along the rotation circumference.

2. The jump rope according to claim 1, characterized in that: When the distribution pattern of the first durations in sequence matches the trend of the first preset pattern, the detection device confirms that the rotating shaft is reversed and counts the number of cycles of the first duration as the number of reverses of the rope skipping movement; When the distribution pattern of the first durations in sequence matches the trend of the second preset pattern, the detection device confirms that the rotating shaft is rotating in the forward direction and counts the number of cycles of the first duration as the number of forward rotations of the rope skipping exercise. The first preset rule is the distribution pattern of the size of the central angle of the interval between the induced magnetic poles arranged sequentially along the forward rotation direction of the circumference, and the second preset rule is the distribution pattern of the size of the central angle of the interval between the induced magnetic poles arranged sequentially along the reverse rotation direction of the circumference.

3. The jump rope according to claim 2, characterized in that: When the distribution pattern of the proportion of each first duration in a predetermined number of sequentially distributed first durations matches the third predetermined pattern, it indicates that the size distribution pattern of each first duration in the sequential distribution matches the trend of the first predetermined pattern; when the distribution pattern of the proportion of each first duration matches the fourth predetermined pattern, it indicates that the size distribution pattern of each first duration in the sequential distribution matches the trend of the second predetermined pattern. The preset quantity is the number of the induction magnetic poles, the third preset rule is the distribution rule of the period ratio of the interval central angle of each induction magnetic pole along the forward rotation direction of the rotation, and the fourth preset rule is the distribution rule of the period ratio of the interval central angle of each induction magnetic pole along the reverse rotation direction of the rotation.

4. The jump rope according to any one of claims 1 to 3, characterized in that: The rotating shaft and the magnetic sensor are spaced apart along the axial direction of the rotating shaft, and the permanent magnet is fixed at the end of the rotating shaft near the magnetic sensor along the axial direction of the rotating shaft.

5. The jump rope according to claim 4, characterized in that: The permanent magnet is fixed to the end face of the rotating shaft.

6. The jump rope according to claim 4, characterized in that: The detection device also includes a circuit board, on which the magnetic sensor is mounted. The circuit board and the rotating shaft are spaced apart along the axial direction, and the circuit board is a rectangular plate.

7. The jump rope according to any one of claims 1 to 3, characterized in that: The magnetic sensor is a switch-type sensor, and the magnetic sensor is a Hall sensor.

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