Locking device of electric control tension supply device

Abstract

The utility model provides a locking device of an electric control tension supply device, which is characterized in that the electric control tension supply device is provided with a rotating shaft, at least one torsion generator is arranged on the rotating shaft, a clutch device is arranged between each torsion generator and the rotating shaft, a winding wheel is synchronously and rotatably connected to the rotating shaft, and a pull rope is wound on the peripheral side of the winding wheel. The outer end of the pull rope penetrates out of a through hole of a pull cover with a fixed position and is connected with a buckle, the device further comprises a locking motor, the locking motor can drive a sliding block to move, and the sliding block is provided with a limiting structure capable of limiting the buckle located at the initial position. Therefore, whether the buckle is in a locked state or not can be accurately judged, so that property loss or personnel injury during clutch operation is avoided.

Description

Technical Field

[0001] The utility model relates to an electric-controlled pulling force supply device, which is suitable for use beside a sickbed or in an ICU and is portable and easy to install. Background Art

[0002] The applicant in this case had previously applied for a utility model and a utility model patent (CN215995455U) named "Constant Torque Generator and Real-time Constant Force Puller". The constant force puller provided therein can allow the user or object to be subjected to the same force at different speeds to achieve better training effects or more stable output.

[0003] However, the tension adjustment of the above-mentioned constant force tensioner is manually operated, which is inconvenient to use. If electronic control is used, there will be increased risks because once the torque mechanism is in the winding state and the clutch operation is performed, the torque mechanism will idle, causing structural damage, and in serious cases, it will cause injuries to the user. Utility Model Content

[0004] The utility model provides a locking device for an electrically controlled tension supply device, the purpose of which is to accurately determine whether a torque mechanism is in an initial position (zero torque output position) to avoid product damage and personal injury.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A locking device for an electrically controlled tension supply device, the electrically controlled tension supply device having a rotating shaft, at least one torque generator arranged on the rotating shaft, a clutch device arranged between each torque generator and the rotating shaft, a winding wheel connected to the rotating shaft for synchronous rotation, a pull rope wound on the outer peripheral side of the winding wheel, the outer end of the pull rope passing through a through hole of a fixed pull cover and connected to a buckle, characterized in that:

[0007] It also includes a locking motor, which can drive a slider to move, and the slider has a limiting structure that can limit the ring buckle at the initial position.

[0008] The locking device of the electric-controlled pulling force supply device, wherein the limiting structure refers to: two pins are provided at one end of the slider facing the pull cover, and a necking portion is provided at the portion of the buckle extending into the through hole of the pull cover, and the two pins can clamp the necking portion of the buckle, so that the buckle is locked in the initial position.

[0009] The locking device of the electric-controlled pulling force supply device, wherein the buckle is made of a material capable of magnetic attraction, and a magnet is fixed on the pull cover.

[0010] The locking device of the electrically controlled tension supply device, wherein the locking motor is a numerically controlled motor, a servo motor with an encoder, or an electric steering gear.

[0011] The locking device of the electrically controlled tension supply device, wherein a locking gear is fixed on the output shaft of the locking motor, a locking rack fixed on the slider is meshingly connected with the locking gear, there is a fixed locking optical coupler, a locking shading plate is fixed on the slider, when the slider moves to the buckle and is limited in the initial position, the locking shading plate is located at the position triggering the locking optical coupler, and the locking optical coupler signal is connected to the locking motor.

[0012] The locking device of the electrically controlled tension supply device is further provided with a position switch on one side of the pull cover. When the buckle is engaged with the perforation of the pull cover, the inner end of the buckle can trigger the position switch, and the position switch signal is connected to the locking motor.

[0013] Therefore, the utility model can accurately determine whether the ring buckle is in a locked state, so as to avoid property loss or personal injury during clutch operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the exploded structure of the electronically controlled clutch device and the speed meter.

[0016] Figure 3 , Figure 4 They are schematic diagrams of the three-dimensional structures of the transmission disc and the torque output wheel.

[0017] Figure 5 It is a schematic diagram of the overall structure of the locking mechanism.

[0018] Figure 6 It is a schematic diagram of the exploded structure showing the matching relationship between the pull cover, the buckle and the slider.

[0019] Explanation of the reference numerals in the accompanying drawings: auxiliary constant torque generator 10; independent constant torque generator 30; winding wheel 40; pull cover 51; buckle 52; necking portion 521; position switch 53; electronically controlled clutch device 60; torque output wheel 61; latch 611; transmission plate 62; latch tooth 621; connecting hole 622; thin-walled structure 623; groove 624; clutch motor 64; slide groove 66; sliding member 67; shielding rod 671; clutch optical coupler 672; driving gear 68; clutch rack 69; locking motor 71; locking gear 72; locking rack 73; slider 74; latch pin 741; locking optical coupler 75; locking light shielding plate 76; speed meter 80; rotor blade 81; speed measuring optical coupler 82. DETAILED DESCRIPTION

[0020] like Figure 1 As shown, the utility model provides an electrically controlled tension supply device, which has a rotating shaft, on which a slot is provided, and an independent constant torque generator 30 arranged on the rotating shaft is combined with the slot of the rotating shaft, so that the rotating shaft forms a basic constant tension in the rotation direction (the independent constant torque generator 30 is not a necessary component and can also be not provided), and then a plurality of auxiliary constant torque generators 10 are arranged on the rotating shaft, and the plurality of auxiliary constant torque generators 10 can switch the power on-off relationship with the rotating shaft through an electrically controlled clutch device 60, so as to provide real-time constant tension of different levels for the user to choose; a winding wheel 40 is also synchronously rotatably connected to the rotating shaft, and a pull rope (not shown in the figure, and its outer end is connected to a ring buckle for easy handholding) is wound on the outer peripheral side of the winding wheel 40, and by pulling the pull rope, the winding wheel 40 can be rotated, thereby driving the rotating shaft to rotate synchronously.

[0021] The structures of the auxiliary constant torque generator 10, the rotating shaft (including the slot), the independent constant torque generator 30 and the winding wheel 40 described in the present utility model, as well as the overall working principle, are preferably consistent with the contents disclosed in the prior patent CN215995455U. For any omissions in this application, please refer to the prior patent. However, it should be emphasized that the auxiliary constant torque generator 10 and the independent constant torque generator 30 in the present utility model can be replaced by any known torque generator.

[0022] like Figure 2 , Figure 3 As shown, the electronically controlled clutch device 60 includes a torque output wheel 61 and a transmission plate 62. The torque output wheel 61 is rotatably inserted into the rotating shaft and is the power output end of the auxiliary constant torque generator 10. The transmission plate 62 is engaged with the slot of the rotating shaft through its internal latching teeth 621 to form a synchronous rotation connection, and the transmission plate 62 can slide on the rotating shaft; when the transmission plate 62 slides to a position engaged with the torque output wheel 61, the winding force (external tension) on the rotating shaft can be transmitted to the auxiliary constant torque generator 10 (i.e., increasing the resistance of the tension supply device), and when the transmission plate 62 slides to a position disengaged from the torque output wheel 61, the winding force (external tension) on the rotating shaft is no longer transmitted to the auxiliary constant torque generator 10 (equivalent to the resistance of the tension supply device), so that the tension supply device can provide real-time constant tension of different levels.

[0023] In order to allow the transmission disc 62 and the torque output wheel 61 to be smoothly engaged under any phase angle deviation, the transmission disc 62 in the present application is uniformly provided with 2N connecting holes 622 (N is a natural number greater than 4) along the circumferential direction, and each adjacent connecting hole 622 forms a thin-walled structure 623 at the connecting position, and the center of each thin-walled structure 623 is a strip-shaped gap parallel to the axial direction of the connecting hole 622 (preferably, the sum of the nominal diameters of the 2N connecting holes 622 is greater than the circumference of the circle surrounded by the 2N connecting holes 622), so that each adjacent connecting hole 622 is connected, and the outer end of each thin-walled structure 623 also has a trumpet-shaped groove 624 (the narrowest part of the groove 624 is connected to the strip-shaped gap); and the torque N latches 611 are evenly arranged along the circumference of the force output wheel 61, and the top end of each latch 611 is in a reduced diameter shape (for example, a cone or a round head shape); in this way, when the transmission disk 62 moves toward the torque output wheel 61, no matter how large the phase angle deviation between the transmission disk 62 and the torque output wheel 61 is, the latch 611 of the torque output wheel 61 can be smoothly inserted into the connecting hole 622 of the transmission disk 62, even if the insertion position of the latch 611 is opposite to the thin-walled structure 623, the transmission disk 62 will be slightly deflected due to the reduced diameter shape of the top end of the latch 611, the groove 624 of the thin-walled structure 623 and the strip-shaped gap, guiding the latch 611 to be smoothly inserted into the connecting hole 622 to form a stable docking.

[0024] In order to achieve the purpose of electric control, the electric control clutch device 60 also includes a clutch motor 64, the clutch motor 64 is fixed in position, and there are a slide groove 66 and a sliding member 67 that cooperate with each other, and the sliding member 67 slides in the slide groove 66 along the axial direction parallel to the rotating shaft 2; a driving gear 68 is fixed on the output shaft of the clutch motor 64, one side of the sliding member 67 is fixedly connected to the transmission disc 62, and the other side is provided with a clutch rack 69, and the driving gear 68 is meshed with the clutch rack 69, so that the clutch motor 64 can drive the transmission disc 62 to make a linear displacement along the axial direction parallel to the rotating shaft 2, thereby connecting or disconnecting with the torque output wheel 61 in power;

[0025] In order to monitor the connection status between the transmission disk 62 and the torque output wheel 61, a shielding rod 671 is also fixedly connected to the sliding member 67, and a fixed clutch optical coupler 672 is provided next to the sliding member 67. When the latch 611 of the torque output wheel 61 is inserted into the connection hole 622 of the transmission disk 62, the shielding rod 671 also moves to the position of triggering the clutch optical coupler 672, and the clutch optical coupler 672 transmits a signal to the clutch motor 64, and the clutch motor 64 stops running to avoid damage. The clutch optical coupler 672 can also transmit a signal to the control system (not shown) so that the control system can understand the clutch status of each auxiliary constant torque generator 10.

[0026] The clutch motor 64 may also directly use a numerically controlled motor, a servo motor with an encoder or an electric servo, and the signal may be connected to the control system. Then, the shielding rod 671 and the clutch optical coupler 672 may no longer be arranged, and the operating position of the clutch motor 64 may be known at any time, thereby accurately judging the clutch status of each auxiliary constant torque generator 10.

[0027] For the safety of the use of the tension supply device, the clutch operation can only be performed when the pull rope is retracted to the initial position (at this time all auxiliary constant torque generators 10 do not output torque). For this purpose, the present application also has a locking mechanism.

[0028] like Figure 5 , Figure 6 As shown, a pull cover 51 is fixed on the housing of the electric-controlled tension supply device, and a through hole is provided on the pull cover 51 for a pull rope (not shown) to pass through. A buckle 52 is connected to the end of the pull rope and matches the shape of the through hole of the pull cover 51, and can be snapped on the through hole of the pull cover 51. In a preferred embodiment, the buckle 52 is made of a material capable of magnetic attraction, and a magnet is fixed on the pull cover 51, so that when the buckle 52 is snapped on the through hole of the pull cover 51 (i.e., the initial position), a stable combination structure is formed.

[0029] A locking motor 71 is provided next to the sliding cover 51, and a locking gear 72 is fixed on the output shaft of the locking motor 71. A slider 74 with a locking rack 73 is meshed and connected with the locking gear 72. Under the drive of the locking motor 71, the slider 74 can be radially extended and retracted toward the through hole of the sliding cover 51; two bayonet pins 741 are provided at the end of the slider 74 facing the sliding cover 51, and the part of the buckle 52 extending into the through hole of the sliding cover 51 is provided with a necking portion 521, and the two bayonet pins 741 can pass through the pin holes on the side of the sliding cover 51 and clamp the necking portion 521 of the buckle 52, so that the buckle 52 is locked in the initial position.

[0030] There is a fixed locking optical coupler 75 on one side of the slider 74, and a locking light shielding sheet 76 is provided on the slider 74. When the slider 74 moves to the position where the ring buckle 52 is locked by the two bayonet pins 741, the locking light shielding sheet 76 on the slider 74 triggers the locking optical coupler 75, and the locking optical coupler 75 sends a signal to the locking motor 71 to stop the locking motor 71 to avoid damage. The locking optical coupler 75 can also transmit a signal to the control system so that the control system can understand the locking condition of the unlocking mechanism.

[0031] A position switch 53 is also provided on one side of the pull cover 51. When the ring buckle 52 is engaged with the perforation of the pull cover 51 (i.e., the initial position), the inner end of the ring buckle 52 can trigger the position switch 53. After the position switch 53 is triggered, the position switch 53 transmits a signal to the locking motor 71, and the locking motor 71 works to lock the ring buckle 52 in the initial position. Then the locking optical coupler 75 is triggered and transmits a signal to the control system, and the control system then connects the electric control clutch device 60 with a signal to drive the electric control clutch device 60 to perform a clutch action; when the clutch action is completed, the control system sends a signal to the locking motor 71, and the locking motor 71 drives the slider 74 to move, so that the two latches 741 no longer block the ring buckle 52. At this time, the ring buckle 52 can be pulled for exercise.

[0032] The locking motor 71 may also directly use a numerically controlled motor, a servo motor with an encoder or an electric servo, and the signal may be connected to the control system. Then, the locking optocoupler 75 and the locking shading plate 76 may no longer be arranged, and the operating position of the locking motor 71 may be known at any time, thereby accurately judging the locking condition of the locking mechanism.

[0033] During the exercise, in order to facilitate information collection, a speed meter 80 is provided at the end of the rotating shaft. Figure 2 As shown, the speed measuring device 80 includes a rotating blade 81 and two speed measuring optical couplers 82. The rotating blade 81 is fixed on the rotating shaft in a synchronously rotating manner and is provided with a plurality of blades. The two speed measuring optical couplers 82 are arranged adjacent to each other and are fixed in position, and both can detect the rotation of the plurality of blades. The two speed measuring optical couplers 82 are both connected to the control system signal.

[0034] In this way, the rotation direction of the shaft can be known by the triggering time sequence of the two speed measuring optical couplers 82 , and the rotation angular velocity of the shaft can be calculated by the triggering frequency of the two speed measuring optical couplers 82 and the number of blades.

[0035] Of course, a tachometer can also be directly connected to the rotating shaft. The tachometer can be a centrifugal tachometer (mechanical structure), a magnetic tachometer (a combination of magnetic force and mechanical force), an electric tachometer, a magnetoelectric tachometer or a flash tachometer. The specific structures will not be described one by one. The tachometer is then connected to the control system to measure the rotation speed of the rotating shaft in real time.

[0036] In short, the electric-controlled tension supply device provided by the utility model can realize electric operation and automatically provide appropriate resistance for various fitness exercises. It has the advantages of being light, space-saving, easy to store, low cost, adjustable, and real-time constant force. Moreover, signals such as exercise duration, force used, movement amplitude, etc. can be collected in real time, which plays a good role in supervision, reminder and even social interaction.

[0037] The above description is only illustrative and not restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the claims, but all will fall within the scope of protection of the present invention.

Claims

1. A locking device for an electrically controlled tension supply device, the electrically controlled tension supply device having a rotating shaft, at least one torque generator arranged on the rotating shaft, a clutch device arranged between each torque generator and the rotating shaft, a winding wheel connected to the rotating shaft for synchronous rotation, a pull rope wound on the outer peripheral side of the winding wheel, the outer end of the pull rope passing through a through hole of a fixed pull cover and connected to a buckle, characterized in that: It also includes a locking motor, which can drive a slider to move, and the slider has a limiting structure that can limit the ring buckle at the initial position.

2. The locking device of the electric-controlled tension supply device according to claim 1, characterized in that: The limiting structure means that two latches are provided at one end of the slider facing the sliding cover, and a necking portion is provided at the portion of the buckle extending into the through hole of the sliding cover, and the two latches can clamp the necking portion of the buckle, so that the buckle is locked in the initial position.

3. The locking device of the electric-controlled tension supply device according to claim 2, characterized in that: The ring buckle is made of a material capable of magnetic attraction, and a magnet is fixed on the pull cover.

4. The locking device of the electric-controlled tension supply device according to claim 1, characterized in that: The locking motor is a digitally controlled motor, a servo motor with an encoder, or an electric steering gear.

5. The locking device of the electric-controlled tension supply device according to claim 1, characterized in that: A locking gear is fixed on the output shaft of the locking motor, a locking rack fixed on the slider is meshed with the locking gear, there is a fixed locking optical coupler, a locking shading plate is fixed on the slider, when the slider moves to the buckle and is limited in the initial position, the locking shading plate is located at the position triggering the locking optical coupler, and the locking optical coupler signal is connected to the locking motor.

6. The locking device of the electric-controlled tension supply device according to claim 1, characterized in that: A position switch is also provided on one side of the pull cover. When the buckle is engaged with the through hole of the pull cover, the inner end of the buckle can trigger the position switch, and the position switch signal is connected to the locking motor.

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